Lid body, combination of container and lid body, and container with lid body

Abstract

To provide a lid body to enable easy and hygienic opening / closing of a drinking spout of the lid body.SOLUTION: The lid body is formed to be able to open and close a mouth portion of a container, and includes a top surface portion formed to cover the mouth portion when the lid body is closed. The top surface portion includes a small lid piece and an opening portion formed when the small lid piece is pulled up. A joint portion joined to one end of a tab member is formed on the tip side of the small lid piece, the tab member having a knob portion formed at the other end.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a lid, a combination of a container and a lid, and a container with a lid. [Background technology]

[0002] Conventionally, it has been common to serve food and drink in a container with the lid closed. In recent years, for example, convenience stores have been widely serving beverages such as coffee in the new form described above. When the food and drink (hereinafter also referred to as the "contents") stored in the container is a beverage such as coffee, the purchaser takes the container with the lid on and tilts the container to drink the contents. For this reason, it is common to form an opening, also called a drinking spout, on the lid so that the contents flow out of the container when the container is tilted. However, simply forming an opening for the drinking spout is not necessarily hygienic, since there is a risk of dust and the like entering the container through the drinking spout. For this reason, it is common to configure the lid so that the drinking spout is not open before use, and the drinking spout is only opened when the user drinks the contents.

[0003] Examples of such lids include those disclosed in Patent Document 1 and Patent Document 2 shown below. The lid disclosed in Patent Document 1 has a side wall and a canopy, and a tab is formed on the canopy. This lid is configured so that when a user picks up the tab and pulls it up, a bell-shaped or gourd-shaped hole opens and a drinking spout is formed. In addition, the beverage cup lid disclosed in Patent Document 2 has an opening (drinking spout) formed on the top surface (canopy), and is provided with a small lid that opens and closes this opening. In addition, the small lid is provided with a protrusion, and is configured so that the small lid is kept open by fitting the protrusion of the small lid into the recess of the top surface. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2016 / 069755 [Patent Document 2] JP 2008-062952 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the lids disclosed in the above Patent Documents 1 and 2 have a problem that the operation of opening and forming the drinking spout by directly pinching the tab or the small lid, and the operation of inserting the tab into the tab hole or fitting the convex part of the small lid into the concave part of the top surface cannot be smoothly performed, making it very difficult to open and form the drinking spout. Although this problem may be solved by devising the structure and shape of the lid itself, in this case, there is another problem that the structure and shape of the lid itself must be made complex. In addition, since the tab and the convex part that becomes the knob are formed directly on the canopy part of the above-mentioned lid, the user must directly touch the lid when opening and forming the drinking spout, which is also a problem in terms of hygiene. In addition, with such conventional lids, when closing the drinking spout again after opening and forming the drinking spout, it is necessary to touch and operate the tab or the small lid with the fingers. Therefore, after closing the drinking spout, the surface touched by the fingers is located on the side that comes into contact with the beverage, which is also a problem in terms of hygiene.

[0006] The present invention has been made in consideration of such problems, and aims to provide a lid body, a combination of a container and a lid body, and a container with a lid body that allows the drinking spout of the lid body to be opened and closed simply and hygienically. [Means for solving the problem]

[0007] The present invention relates to the following (1) to (16). (1) A lid formed to be able to open and close the mouth of a container, a top surface portion formed to cover the mouth portion when the container is closed in a state where the container is attached; The top surface portion includes a small lid piece and an opening portion that is formed when the small lid piece is lifted up. A tab member is attached to the small lid piece, The small lid piece has a joint portion that is joined to one end of the tab member, The tab member has a knob portion formed at the other end of the tab member. Lid body, (2) A lid having a joining area to be joined to the periphery of the mouth of a container, The container has a shape that covers the mouth when joined thereto, The container has a small lid piece, a tab member joined to the small lid piece, and an opening formed when the small lid piece is lifted up, The small lid piece is provided inside the joining area, One end of the tab member and the small lid piece are joined together, When the joint portion between the one end portion and the portion near the tip is defined as a joint portion, The tab member has a knob portion formed at the other end of the tab member. Lid body, (3) The tab member has a holding piece formed between the joint portion and the knob portion, and is formed so that the holding piece protrudes from the tab member when the knob portion is pinched to open the small cover piece, The top surface portion is formed with an insertion portion into which the protruding holding piece is inserted, The cover body according to (1) above, which is configured so that the holding piece can be inserted into the insertion portion to maintain the small cover piece in an open state; (4) The tab member has a holding piece formed between the joint portion and the knob portion, and is formed so that the holding piece protrudes from the tab member when the knob portion is pinched to open the small cover piece, An insertion portion into which the protruding holding piece is inserted is formed, The cover body according to (2) above, which is configured so that the holding piece can be inserted into the insertion portion to maintain the small cover piece in an open state; (5) The cover according to (3) or (4) above, wherein the knob portion is formed so as to rise when the holding piece is inserted into the insertion portion. (6) The cover according to any one of (3) to (5), wherein the holding piece is formed so as to protrude from the knob side toward the joint side. (7) The lid according to any one of (3) to (6) above, wherein the insertion portion has a main portion into which the holding piece is inserted and an auxiliary portion intersecting the main portion. (8) The cover according to any one of (3) to (7) above, wherein the tab member has a pattern imitating a human facial expression on the knob portion. (9) The cover according to (8) above, wherein the pattern changes three-dimensionally before and after the holding piece is protruded. (10) having an exposed surface when joined to the container; The lid body according to the above-mentioned (2), wherein at least a part of the outer periphery of the small lid piece extends along the inner edge of the joining area and is formed outside the intersection position of the exposed surface and the extension of the inner periphery of the container in a state where the small lid piece is joined to the container. (11) The small cover piece has a facing surface facing an outer peripheral end surface of the small cover piece when the small cover piece is in a closed state, The lid body according to any one of (1) to (10) above, in which at least a part of the outer peripheral end surface rubs against the facing surface when the small lid piece is opened from the closed state. (12) The cover according to any one of (1) to (11) above, wherein a window is formed in the top surface portion. (13) The cover according to any one of (1) to (12), wherein the top surface portion has a raised portion at least in part. (14) A lid according to any one of (1) to (13) above, which is made of a paper-based material. (15) A combination of a container having a mouth and a lid according to any one of (1) to (14) above. (16) A container having a mouth and a lid according to any one of (1) to (14) above, A container with a lid, the mouth of which is covered with a lid; The gist of the paper is as follows. Effect of the Invention

[0008] According to the present invention, the small lid piece joined to the tab member can be easily opened by pinching the tab member's tab and pulling it up. Furthermore, in the case where a holding piece is formed on the tab member and an inserting portion is formed on the top surface, the small lid piece can be kept open, i.e., the opening is opened, by pinching the tab member's tab and pulling up the small lid piece while inserting the holding piece formed on the tab member into the inserting portion formed on the top surface. Therefore, according to the lid body of the present invention, the user can perform the operation of opening the opening without directly touching the small lid piece. Furthermore, according to the present invention, in the case where a holding piece is formed on the tab member and an inserting portion is formed on the top surface, the user can smoothly perform the operation of keeping the small lid piece open, and the small lid piece can be easily opened and closed. Furthermore, according to the lid body of the present invention, it is possible to drink the contents while maintaining a very hygienic state. In addition, even when closing the opening again, the small lid piece can be closed to the closed state by operating the tab member, so that it is possible to reduce the contact of the user's fingers with the deposits that tend to adhere to the small lid piece due to steam, etc., and to reduce the occurrence of situations that cause the user to feel uncomfortable. In addition, since the small lid piece can be opened and closed by operating only the tab member in this way, the user does not feel cumbersome when operating it, and it is possible to use it comfortably. [Brief description of the drawings]

[0009] [Figure 1] 1(a) and 1(b) are external perspective views showing an embodiment (first embodiment) of a lid according to the present invention. [Diagram 2] FIG. 2 is a perspective view of the exterior of the cover, illustrating the operation of opening the small cover piece. [Diagram 3] 3(a) and 3(b) are external perspective views showing the lid when the opening is open. [Figure 4] FIG. 4 is a plan view showing the cover with the small cover piece in a closed state. [Diagram 5] FIG. 5 is a plan view showing the cover with the small cover piece in an open state. [Figure 6] Fig. 6(a) is a vertical cross-sectional view taken along line AA in Fig. 1(a), and Fig. 6(b) is a partially enlarged view of Fig. 6(a). [Figure 7] 7(a) and 7(b) are explanatory views for explaining the configuration and function of the tab member. [Figure 8] 8(a), 8(b) and 8(c) are explanatory diagrams for explaining the operation of opening the small cover piece. [Figure 9] FIG. 9 is an explanatory diagram for explaining a state in which the lid is attached to the container. [Figure 10] FIG. 10 is an explanatory diagram for explaining the function and effect when the lid body is attached to the container. [Figure 11] FIG. 11 is an explanatory diagram showing a state in which the lids are stacked. [Figure 12] 12(a) to 12(g) are explanatory diagrams for explaining other embodiments of the small cover pieces. [Figure 13] 13(a) and 13(b) are an external perspective view and a vertical sectional view showing a first modified example of a lid according to the present embodiment. [Figure 14] 14(a) to 14(e) are explanatory diagrams showing the configuration of other aspects of the lid body. [Figure 15] 15(a) to 15(d) are explanatory diagrams showing the configuration of other aspects of the lid body. [Figure 16] 16(a) to 16(e) are explanatory diagrams showing the configuration of other aspects of the lid body. [Figure 17] 17(a) to 17(e) are explanatory diagrams showing the configuration of other aspects of the lid body. [Figure 18]18(a) to 18(d) are explanatory diagrams showing the configuration of other aspects of the lid body. [Figure 19] 19(a) to 19(e) are explanatory diagrams showing the configuration of other modes of the lid body. [Figure 20] 20(a) and 20(b) are explanatory diagrams showing the configuration of another embodiment of the lid body. [Figure 21] FIG. 21 is a perspective view showing the configuration of another embodiment of the lid body. [Figure 22] FIG. 22 is an external perspective view for explaining another embodiment of the insertion portion in the cover. [Figure 23] Fig. 23(a) is an external perspective view for explaining another embodiment of the insertion portion of the lid, and Fig. 23(b) is an external perspective view showing the configuration of another embodiment of the lid. [Figure 24] Fig. 24(a) is a plan view showing the configuration of a lid having a tab member of another embodiment, and Fig. 24(b) is an external perspective view of the lid shown in Fig. 24(a). [Diagram 25] Fig. 25(a) is a plan view showing the configuration of a lid having a tab member of another embodiment, and Fig. 25(b) is an external perspective view of the lid shown in Fig. 25(a). [Figure 26] Fig. 26(a) is a plan view showing the configuration of a lid having a tab member of another embodiment, and Fig. 26(b) is an external perspective view of the lid shown in Fig. 26(a). [Figure 27] FIG. 27 is an external perspective view showing the configuration of a lid body having a tab member according to another embodiment. [Figure 28] Fig. 28(a) is a plan view for explaining one example of a cover according to the second embodiment of the present invention, and Fig. 28(b) is a vertical cross-sectional view taken along line BB in Fig. 28(a). [Figure 29] FIG. 29 is a plan view illustrating an example of a cover according to the second embodiment of the present invention. [Diagram 30] Fig. 30(a) is a plan view for explaining one example of a cover according to the second embodiment of the present invention, and Fig. 30(b) is a vertical cross-sectional view taken along line CC in Fig. 30(a). [Diagram 31]FIG. 31 is a plan view illustrating an example of a cover according to the second modification of the second embodiment of the present invention. [Diagram 32] FIG. 32 is a cross-sectional view of a main part for explaining one example of a cover according to the second embodiment of the present invention. [Diagram 33] Fig. 33(a) is a plan view for explaining one example of a cover according to Modification 1 of the second embodiment of the present invention, and Fig. 33(b) is a vertical cross-sectional view taken along line DD in Fig. 33(a). [Diagram 34] 34(a) and 34(b) are plan views for explaining one example of a cover according to the third modification of the second embodiment of the present invention. [Diagram 35] FIG. 35 is a cross-sectional view of a main part for explaining one example of a cover according to the second embodiment of the present invention. [Diagram 36] FIG. 36 is a cross-sectional view of a main part for explaining one example of the lid according to the second embodiment of the present invention. [Figure 37] Fig. 37(a) is a plan view for explaining one example of a cover according to Modification 4 of the second embodiment of the present invention, and Fig. 37(b) is a vertical cross-sectional view taken along line EE of Fig. 37(a). [Figure 38] FIG. 38 is a cross-sectional view showing one embodiment of a container with a lid. [Figure 39] FIG. 39 is a plan view illustrating one example of the cover according to the second embodiment of the present invention. [Diagram 40] Fig. 40(a) is a cross-sectional view for explaining one example of the lid according to the second embodiment of the present invention, and Fig. 40(b) is a partially enlarged view in which the range indicated by X in Fig. 40(a) is enlarged. [Diagram 41] Fig. 41(a) is a plan view for explaining one example of a cover according to Modification 5 of the second embodiment of the present invention, and Fig. 41(b) is a vertical cross-sectional view taken along line FF in Fig. 41(a). [Diagram 42] FIG. 42 is a cross-sectional view showing one embodiment of a container with a lid. [Diagram 43] FIG. 43 is a cross-sectional view showing one embodiment of a container with a lid. [Diagram 44]FIG. 44 is a cross-sectional view showing one embodiment of a container with a lid. [Diagram 45] 45(a) and 45(b) are plan views for explaining one example of a cover according to the second modification of the second embodiment of the present invention. [Figure 46] Fig. 46(a) is a plan view for explaining an example of a lid according to the sixth modification of the second embodiment of the present invention, and Fig. 46(b) is a cross-sectional view for explaining an example of a lid according to the sixth modification of the second embodiment of the present invention. [Figure 47] FIG. 47 is a plan view for explaining one embodiment of a lid according to the present invention. [Figure 48] FIG. 48 is a plan view for explaining one embodiment of a lid according to the present invention. [Figure 49] 49(a) and 49(b) are plan views for explaining one embodiment of the lid of the present invention. [Figure 50] 50(a) and 50(b) are explanatory views for explaining one example of the cover according to the second embodiment of the present invention. [Figure 51] FIG. 51 is a plan view illustrating an example of a cover according to the seventh modification of the second embodiment of the present invention. [Figure 52] FIG. 52 is an explanatory diagram for explaining one example of a cover according to the eighth modified example of the second embodiment of the present invention. [Figure 53] FIG. 53(a) is a plan view showing the configuration of a lid body having a tab member of another embodiment, and FIG. 53(b) is a diagram explaining an example of use of the lid body having the tab member shown in FIG. 53(a). [Figure 54] FIG. 54 is a plan view showing the configuration of a lid having a tab member according to another embodiment. [Figure 55] FIG. 55(a) is a plan view for explaining an example of use of the lid shown in FIG. 54, and FIG. 55(b) is a vertical sectional view taken along line HH in FIG. 55(a). [Figure 56] FIG. 56 is a plan view illustrating an example of a cover according to a modified example of the second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The lid body according to the present invention will be described in detail below with reference to the drawings. The lid body according to the present invention will be described as an example of a lid body used for a container (cup) for holding various beverages such as a coffee cup, but it is not limited to a lid body for a container for holding beverages, and can also be applied as a lid body for a container for holding food other than beverages. The lid body according to the present invention can also be applied to various objects other than food and beverages, such as parts such as bolts and nuts, and containers that can hold objects other than the above-mentioned parts. Furthermore, the lid body according to the present invention will be described below using an example of a lid body that has a circular shape when viewed in a plane, but the lid body is not limited to a lid body that has a circular shape when viewed in a plane, and can also be applied to lid bodies of various shapes other than a circle, such as an elliptical shape, a rectangular shape, a polygonal shape such as a triangular shape, a chamfered rectangular shape, a chamfered polygonal shape, etc.

[0011] In the following description, a lid that can be fitted to a container will be described as a first embodiment, and a lid that does not fit to a container will be described as a second embodiment. In this specification, configurations that have substantially similar features even in different embodiments will be indicated by the same reference numerals, and detailed descriptions of those configurations will be omitted.

[0012] (First embodiment) As shown in Figures 1 to 6, the cover 1 according to the first embodiment includes a top portion 2 and a side wall 3. The side wall 3 is formed into a cylindrical or annular shape by joining both ends of a paper-based material. The side wall 3 has an upper wall 5 and a lower wall 6. The side wall 3 is tapered from the upper end 3b side toward the lower end 3c side. Here, the term "tapered" means that the shape of the outer wall 3a of the side wall 3 is tapered from the upper end 3b side to the lower end 3c side. This "tapered" includes a shape in which the outer wall 3a of the side wall 3 gradually decreases in size from the upper end 3b side to the lower end 3c side, as well as a shape in which the outer wall 3a of the side wall 3 has a bulge or protrusion that increases in size, or a shape in which the outer wall 3a of the side wall 3 is tapered overall even if such a bulge or protrusion is formed. When the outer wall 3a of the side wall 3 gradually decreases in size from the upper end 3b side to the lower end 3c side, the outer wall 3a of the side wall 3 may have a shape in which the size gradually decreases linearly from the upper end 3b side to the lower end 3c side, or a shape in which a step 3d (see FIG. 6, etc.) is formed between the upper end 3b side and the lower end 3c side. In addition, even if a portion of the side wall 3 is a straight cylindrical or annular shape that is not tapered, a shape in which the outer wall 3a of the side wall 3 is tapered as a whole is also included in this "tapered shape." In other words, the "tapered shape" here is a concept that includes a form in which a portion of the outer wall 3a is formed in a shape other than a tapered shape as long as the shape of the outer wall 3a of the side wall 3 is tapered as a whole.

[0013] The canopy portion 2 has a top surface portion 2a and a rising portion 4. The top surface portion 2a is a portion that is formed in the center portion of the canopy portion 2 and is formed to have a size and shape that allows it to contact at least a part of the edge portion 103 formed on the periphery of the mouth portion 102 of the container 101 and cover the mouth portion 102 when the mouth portion 102 is closed as shown in FIG. 9. The top surface portion 2a has a main body 2a1 having an opening 12 and a small lid piece 13. The small lid piece 13 is formed so as to be openable and closable. When attached to the container 103, the top surface portion 2a is located above the mouth portion 102, and the main body 2a1 and the small lid piece 13 cover the mouth portion 102. The rising portion 4 is a portion that is formed on the periphery of the top surface portion 2a and is formed to rise upward from the periphery of the top surface portion 2a. The top surface portion 2a and the rising portion 4 may be formed separately, but are preferably formed integrally from the viewpoints of manufacturing efficiency and airtightness of the lid body 1. When the top surface portion 2a and the rising portion 4 are formed integrally in the canopy portion 2, any conventionally known method can be adopted, but from the viewpoint of ease of forming the canopy portion 2, it is preferable to form the top surface portion 2a and the rising portion 4 by bending. In other words, the rising portion 4 is preferably formed by bending the periphery of the top surface portion 2a.

[0014] The canopy 2 and the side wall 3 are integrated by joining the outer surface 4b of the rising portion 4 of the canopy 2 to the inner surface 5a of the upper wall 5 of the side wall 3. As shown in FIG. 9, an engagement portion 7 is formed on the inner surface 6a of the lower wall 6 of the side wall 3, which is formed to have a shape that can engage with an edge portion 103 (a curled portion formed in a curled shape in FIG. 9) provided on a mouth portion 102 formed on a container 101. The engagement portion 7 can be formed in any shape as long as it can engage with the edge portion 103 of the container 101. For example, it may be formed into a linear tapered shape as shown in FIG. 1, or the engagement portion 7 may be formed by bulging the lower wall 6 to match the shape of the edge portion 103. In addition, the engagement portion 7 may be formed by forming a protrusion that protrudes inward on the inner surface 6a of the lower wall 6, or the protrusion described above may be formed as part of the engagement portion 7. In this way, when forming the engagement portion 7 by forming a protrusion that protrudes inward on the inner surface 6a side, the protrusion may be formed continuously on the inner surface 6a, or the protrusion may be formed intermittently by alternately forming a portion with a protrusion and a portion without a protrusion. In addition, when the protrusion is formed intermittently, the size and length of the protrusion of each protrusion may be the same or different.

[0015] The engagement portion 7 may be formed by pressing the inner circumferential surface of the lower wall 6 of the side wall 3. In particular, when the engagement portion 7 is formed in an annular groove shape, pressing the inner circumferential surface of the lower wall 6 can reduce a step at the joint of the engagement portion 7 formed in the lower wall 6 of the side wall 3 formed by joining both ends of a rectangular or fan-shaped paper-based material, making it difficult for a gap to form between the lid 1 and the container 101, improving the airtightness of the lid 1 when closed.

[0016] In the lid 1 according to this embodiment, the side wall 3 is formed into a cylindrical or annular shape by joining both ends of a sector-shaped blank material (not shown) in which the length of the arc on the upper end 3b side is longer than the length of the arc on the lower end 3c side. Therefore, the side wall 3 is formed so that the side surface is generally tapered (inclined generally in the direction of the arrow a in FIG. 6) from the upper end 3b side toward the lower end 3c side (toward the mouth 102 of the container 101), and the inner dimension of the lower end side of the engagement portion 7 is smaller than the inner dimension of the upper end side of the engagement portion 7.

[0017] The lid body 1 according to the present embodiment has excellent stacking properties when a plurality of lid bodies 1 are stacked as shown in FIG. 11 because the side wall 3 is formed in an inclined shape tapering from the upper end 3b side to the lower end 3c side. That is, the lid body 1 according to the present embodiment can be stored and transported in a small space by stacking a plurality of lid bodies 1 vertically, and the cost of storage and transport can be reduced. The side wall 3 is not limited to the case where the side surface of the outer wall 3a is formed in an inclined shape as a whole, and only a part of the side wall 3, for example, the upper end 3b side or the lower end 3c side of the side wall 3, may be formed in an inclined shape. In addition, the upper end 3b side and the lower end 3c side of the side wall 3 may be formed to have different inclination angles. Furthermore, the lid body 1 according to the present embodiment may be configured in a non-inclined cylindrical or annular shape by forming the side wall 3 in a surrounding shape with a rectangular paper-based material, that is, in a ring-shaped or cylindrical shape that surrounds the periphery of the top surface portion 2a of the canopy portion 2. Furthermore, by forming the side wall 3 from an inverted fan-shaped blank material formed from a paper-based material, it is possible to form the side wall 3 in the opposite inclination to that shown in FIG. 11, etc., but it is preferable that the side wall 3 is non-inclined or inclined in a tapered shape that follows the inclination angle of the side wall 104 of the container 101 as shown in FIG. 11, etc. Among them, the side wall 3 is formed so that the side surface of the outer wall 3a is inclined to be annular or tubular so as to be tapered from the upper end 3b side to the lower end 3c side, thereby improving the stackability of the lid body 1 when a plurality of lid bodies 1 are stacked. Furthermore, by forming the side wall 3 as described above, it is possible to improve the closing and sealing properties of the container 101 when the lid body 1 is fitted to the container 101 and the mouth part 102 of the container 101 is closed. From the viewpoint of further improving the stackability of the lid body 1, it is preferable to form a step 3d on the outer surface of the side wall 3. By forming the step 3d on the outer surface of the side wall 3, it is possible to significantly reduce the occurrence of the lower wall 6 of the lid body being stacked on top intruding into the space surrounded by the upper wall 5 of the lid body 1 located below it during stacking, and of the intrusion of the lower wall 6 being restricted by the inner surface of the upper wall 5. Therefore, when stacking multiple lid bodies 1, more lid bodies 1 can be stacked in a smaller space.This makes it possible to increase the number of lid bodies 1 that can be stacked when storing the lid body 1 in an object with a fixed height, such as a container or a packaging box, and therefore reduces logistics costs, such as when transporting the lid body 1.

[0018] The joining of both ends of the blank material made of a paper-based material that forms the side wall 3 of the lid 1, and the joining of the rising portion 4 and the side wall 3 of the canopy portion 2 can be carried out by a conventionally known joining method. Examples of the joining method include a normal adhesive, a hot melt adhesive, a two-part adhesive, heat sealing, ultrasonic joining, high frequency joining, etc., but from the viewpoint of manufacturing efficiency, it is preferable to form the joining surfaces of the rising portion 4 of the canopy portion 2 and the side wall 3 from a material that has heat sealing properties and join them by heat sealing.

[0019] Fig. 9 shows a state in which the lid body 1 has been placed on the container 101 to seal the mouth 102 of the container 101, and Fig. 10 shows a state in which the lid body 1 is in the middle of being placed on the container 101. The lid body 1 according to this embodiment is formed so that the engagement portion 7 engages with the edge 103 of the container 101. The lid body 1 according to this embodiment is formed so that the lower end portion 8 of the lower wall 6 does not come into contact with the side wall 104 of the container 101 when the engagement portion 7 is engaged with the edge 103 of the container 101. The lid body 1 can not only close the container 101 with high airtightness, but also can be easily removed from the container 101 because the lower wall 6 has elasticity. Furthermore, the lid body 1 is structured so that the lower end portion 8 of the lower wall 6 does not come into contact with the side wall 104 of the container 101 when the lid body 1 is attached to the container 101, and therefore, when removing the lid body 1 from the container 101, the engagement between the edge portion 103 of the mouth portion 102 of the container 101 and the engagement portion 7 of the lid body 1 is released by hooking the lower end portion 8 of the lower wall 6 with fingers or the like and pulling up the lower wall 6. Then, by further pulling up the lid body 1, the lid body 1 can be more easily removed from the container 101.

[0020] The lid 1 has an engaging portion 7 formed on the lower wall 6 of the side wall 3, which is formed from a paper-based material in a surrounding shape, i.e., a ring or a cylinder, for engaging with the mouth 102 of the container 101. The lower wall 6 of the side wall 3 on which the engaging portion 7 is provided has superior elasticity compared to a case in which the lower wall 6 of the side wall 3 is folded back and joined to the canopy 2. Therefore, even if the diameter of the engaging portion 7 of the lid 1 is designed to be smaller than the outer diameter of the edge 103 of the container 101, the lid 1 can be securely engaged with the container 101. Furthermore, by designing the diameter of engagement portion 7 to be smaller than the outer diameter of edge portion 103 of container 101 in this manner, even if the pressure within space 105 formed within container 101 increases due to the contents being filled with a liquid product such as coffee, especially a hot liquid product, there is no risk of lid body 1 coming off easily, and container 1 can be closed while maintaining a high level of airtightness. Combined with the fact that side wall 3 is formed so as to taper overall from the upper end to the lower end, the lid can be closed with a high level of airtightness.

[0021] In addition, the lid 1 according to the first embodiment can reliably close the mouth 102 of the container 101 and maintain high airtightness even if there is an error in the dimensions of the mouth 102 of the container 101, because the lower wall 6 of the side wall 3 has elasticity. In addition, the side wall 3 is tapered from the upper end 3b side to the lower end 3c side, and the rising portion 4 is joined to the inner surface 5a of the upper wall 5 of the side wall 3 to integrally join the canopy portion 2 and the side wall 3, so that the joining strength between the outer surface of the rising portion 4 of the canopy portion 2 and the inner surface of the upper wall 5 of the side wall 3 is increased. In particular, the lid 1 shown in FIG. 1 etc. forms a folded portion 9 in which the upper wall 5 of the side wall 3 is folded back toward the inner surface 4a of the rising portion 4, and the inner surface 4a of the rising portion 4 and the opposing surface 9a of the folded portion 9 facing the inner surface 4a are joined. Therefore, the joining strength between the canopy portion 2 and the side wall 3 is further increased. Therefore, even when a load force is applied to the lid body 1, the lid body 1 is less likely to twist, and there is no risk of the engagement between the engagement portion 7 and the edge portion 103 of the container 101 coming loose. Even if the internal pressure of the sealed container 101 increases when a hot beverage or the like is placed inside the container, there is very little risk of the lid body 1 coming loose from the container 101.

[0022] In general, the larger the canopy portion 2 of the lid 1, the more easily the canopy portion 2 is twisted by the load on the lid 1. However, as in the lid 1 according to the first embodiment, the side wall 3 is formed with an inclination so as to taper from the upper end 3b side to the lower end 3c side, and the rising portion 4 formed to rise in an expanding inclined manner is joined to the inner surface of the upper wall of the side wall 3, and further, the rising portion 4 is joined to the folded portion 9. This reduces the risk that the lid 1 will come off the container 101 due to the load applied to the lid 1, even if the lid 1 is large. The lid 1 can maintain a secure closed state by forming the size between the lower joint point 10 of the joint portion between the rising portion 4 of the canopy portion 2 and the upper wall 5 of the side wall 3 (the diameter of the lower joint point 10 in the case of a circular canopy portion 2) larger than the size between the lower end 8 of the engagement portion 7 (the inner diameter of the lower end of the engagement portion 7 in the case of a circular canopy portion 2). In the lid body 1 according to this embodiment, the joint between the upper wall 5 of the side wall 3 and the rising portion 4 of the canopy portion 2 is formed as a protruding wall 121 on the upper side of the canopy portion 2. When the content of the container 101 is a beverage such as coffee, this protruding wall can be used as a mouthpiece that the user places his / her mouth on when drinking the beverage, and can also be used as an overflow prevention wall that prevents the beverage from overflowing.

[0023] The container 101 is not limited to a container with an inclined side wall 104 such as a coffee cup or a cup noodle container, but may be a cylindrical container such as a nut can. The lid 1 can be used for various containers such as paper containers, plastic containers, foamed plastic containers, metal pipes, etc., and can be used not only for containers that hold liquids, but also as a lid for storage containers for dry foods, etc., and non-food containers, etc. The lid 1 can be used as a lid for containers such as coffee cups, cup noodles, nut cans, soup, yogurt, ice cream, various prepared foods, and bento boxes, but can also be used as a lid for any container, not limited to containers for food and drink.

[0024] In the lid 1 of this embodiment, the side wall 3 is formed in a tapered inclination from the upper end 3b side to the lower end 3c side, and the inclination angle α (see FIG. 9) of the side wall 3 of the lid 1 and the inclination angle β (see FIG. 9) of the side wall 104 of the container 101 may be the same or different. When they are different, the inclination angle α of the side wall 3 may be larger or smaller than the inclination angle β of the side wall 104 of the container 101. However, when the inclination angle α is smaller than the inclination angle β (when the inclination is large), the fitting force of the lid 1 to the container 101 is higher, and the airtightness is improved. The size of the inclination angle α of the side wall 3 of the lid 1 relative to the inclination angle β of the side wall 104 of the container 101 can be arbitrarily changed according to the difference in the size of the container 101 (the size of the lid 1) etc. in order to improve the airtightness of the lid 1. In addition, in the case of non-circular containers such as polygonal containers, changes in the sealing ability due to differences in the part of the container can be prevented by changing the inclination angle α of the side wall 3 of the lid body 1 in accordance with differences in the shape of the part of the container into which the lid body 1 fits.

[0025] In the above embodiment, the cover body 1 is formed so that the upper wall 5 of the side wall 3 and the rising portion 4 of the canopy portion 2 are the same height, but the upper wall 5 of the side wall 3 and the rising portion 4 of the canopy portion 2 are not limited to being formed so as to be of the same height, and either the upper wall 5 of the side wall 3 or the rising portion 4 of the canopy portion 2 may be formed shorter than the other.

[0026] Examples of the paper-based material constituting the side wall 3 of the lid 1 include so-called paper obtained by spreading a slurry of a fiber raw material onto a screen, drying or pressing it to dry it, and making it into a sheet, so-called airlaid sheets obtained by stacking spread fiber raw materials such as ground pulp obtained by grinding a raw material sheet made of pulp-based fibers or the like in a grinder, using an air flow to fix the fibers of the stack with a binder, so-called papers produced by agglutinating plant fibers and other fibers, as well as chemical fiber paper, synthetic paper, waterproof paper, coated paper, substitute paper, parchment, wool paper, glass fiber paper, stone paper, ceramic paper, etc., and a laminate of multiple sheets of these. The paper-based material may be one made only of pulp, or one containing non-pulp-based natural fibers, synthetic fibers, recycled fibers, etc., but it is preferable that the paper contains 50% by mass or more of pulp, more preferably 70% by mass or more, and even more preferably 80% by mass or more, and particularly preferably 100% by mass of pulp. The paper-based material can be a composite material with synthetic or natural resin films, nonwoven fabrics, wood-based materials such as wood foil, and even aluminum foil, but when used as a composite material, the composite material as a whole preferably contains 50% or more by mass of pulp, and more preferably contains 80% or more by mass of pulp. The higher the pulp content, the easier the paper-based material will be to biodegrade, which is preferable.

[0027] Examples of pulp include wood pulp, non-wood pulp, waste paper pulp, synthetic pulp, etc. More specifically, mechanical pulp (MP) such as groundwood pulp (GP), stone ground pulp (SGP), refiner ground pulp (RGP), pressurized groundwood pulp (PGW), thermomechanical pulp (TMP), chemi-thermomechanical pulp (CTMP), bleached chemi-thermomechanical pulp (BCTMP), etc.; kraft pulp (KP) such as chemical mechanical pulp (CGP), semi-chemical pulp (SCP), bleached hardwood kraft pulp (LBKP), bleached softwood kraft pulp (NBKP), etc.; Examples of pulps include chemical pulps (CP) such as soda pulp (AP), sulfite pulp (SP), and dissolving pulp (DP); synthetic pulps made from nylon, rayon, polyester, polyvinyl alcohol (PVA), and the like; waste pulp (TP); rag pulp made from cotton, flax, hemp, jute, Manila hemp, ramie, and the like; culm pulps such as straw pulp, esparto pulp, bagasse pulp, bamboo pulp, and kenaf pulp; and auxiliary pulps such as bast pulp. The pulp may be coniferous pulp such as red pine, todomatsu, Yezo pine, Douglas fir, hemlock, spruce, etc.; hardwood pulp such as beech, oak, birch, eucalyptus, poplar, alder, etc.; wood pulp such as a mixture of coniferous pulp and hardwood pulp; non-wood pulp such as kenaf, bagasse pulp, bamboo pulp, cereal pulp, straw pulp, abaca pulp, cotton pulp, etc.; waste paper pulp, etc. Since coniferous pulp has a longer fiber length than hardwood pulp, paper materials using pulp with a long fiber length such as coniferous pulp have a higher degree of entanglement between the fibers, and crushed pulp obtained by crushing a raw material sheet using coniferous pulp, etc. also has a longer fiber length than crushed pulp obtained by crushing a raw material sheet made of hardwood pulp, so that the strength of the paper-based material is improved by the entanglement between the fibers. It is preferable to use a biodegradable pulp among the above-mentioned pulps.

[0028] The paper-based material is preferably water-resistant, and may be a material that has been previously imparted water resistance, such as waterproof paper, or may have a coating layer provided on at least the surface of the paper-based material that faces the container. The coating layer may be provided by adhering a film or applying a coating agent.

[0029] Examples of resins that form the coating layer include polystyrene, polyethylene, polypropylene, polyethylene terephthalate, polyurethane, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, cyanoacrylate, epoxy resin, polyacrylic acid resin, polymethacrylic acid resin, nylon, polycarbonate; polycaprolactone, polyhydroxyalkanoate, polyhydroxybutyrate, polylactic acid, starch-based resins such as esterified starch, cellulose acetate, polyethylene succinate, polyvinyl alcohol, polyglycolic acid, chitosan / cellulose / starch, poly(hydroxybutyrate / hydroxyhexanoate), poly(caprolactone / butylene succinate), polybutylene succinate, poly(butylene succinate / adipate), poly Naturally degradable resins and mixtures of naturally degradable resins such as poly(butylene succinate / carbonate), poly(ethylene terephthalate / succinate), poly(butylene adipate / terephthalate), and poly(tetramethylene adipate / terephthalate); naturally degradable biomass resins and mixtures of naturally degradable biomass resins; fluororesins, silicone resins, ultraviolet curing resins, copolymers of monomers constituting the above resins such as ethylene-vinyl acetate copolymers, ethylene-vinyl alcohol copolymers, ethylene-propylene copolymers, ethylene-propylene-butadiene copolymers, acrylic-styrene copolymers, styrene-butadiene copolymers, and acrylonitrile-butadiene-styrene copolymers, natural resins, paraffin, gelatin, cellophane, and polymethylpentene can be used. The coating layer is preferably formed of naturally degradable resins such as polylactic acid, polycaprolactone, polyhydroxyalkanoates, and starch-based resins, naturally degradable biomass resins, and natural resins, or the like.

[0030] Examples of the naturally degradable resin include natural resins, naturally degradable plastics, biomass plastics, etc. Examples of the naturally degradable plastics and biomass plastics include naturally degradable resins and mixtures of naturally degradable resins such as polycaprolactone, polyhydroxyalkanoate, polyhydroxybutyrate, polylactic acid, starch-based resins such as esterified starch, cellulose acetate, polyethylene succinate, polyvinyl alcohol, polyglycolic acid, chitosan / cellulose / starch, poly(hydroxybutyrate / hydroxyhexanoate), poly(caprolactone / butylene succinate), polybutylene succinate, poly(butylene succinate / adipate), poly(butylene succinate / carbonate), poly(ethylene terephthalate / succinate), poly(butylene adipate / terephthalate), and poly(tetramethylene adipate / terephthalate).

[0031] The naturally degradable resin may also contain additives listed in the positive list of the Japan Bioplastics Association, such as lubricants such as stearic acid amide, fatty acid esters, fatty acid metal salts, fatty acids, oils and fats, and glycerin fatty acid esters; stabilizers such as triphenyl phosphate, phthalic anhydride, tris-dibutyl phosphate, and acetic anhydride; inorganic materials such as titanium dioxide, kaolin, mica, bentonite, diatomaceous earth, magnesium oxide, aluminum silica sand, calcium carbonate, calcium hydroxide, and shell powder; surfactants such as higher fatty acid amides, nonionic surfactants, and glycerin fatty acid esters; foaming agents such as citric acid, sodium bicarbonate, and butane; and other materials such as antistatic agents and hot melt adhesives.

[0032] Furthermore, "naturally degradable" refers to a property that can be decomposed in the air, soil, or water by microorganisms, ultraviolet rays, changes in weather, etc., thereby reducing the environmental load. Furthermore, the lid is not limited by the contents of the container to which the lid is attached, and can be applied to lids that close containers that can hold any type of contents.

[0033] The canopy portion 2 of the lid body 1 can be made of a paper-based material similar to the side wall 3, but can also be made of a film or sheet material in addition to the paper-based material. When the canopy portion 2 is made of a film or sheet material, it has higher flexibility than when the canopy portion 2 is made of a paper-based material, making it easier to fit the lid body 1 into the container 101. Furthermore, when made of a transparent film or sheet material, the contents inside the container 101 can be easily visually confirmed when attached to the container 101. Examples of the film or sheet material that can be used include polyvinyl chloride, polyvinylidene chloride, polyurethane, polyethylene terephthalate (PET), olefin resins such as polyethylene and polypropylene, polyvinyl alcohol, acrylic resins such as polyacrylic acid, polymethacrylic acid, acrylonitrile-butadiene-styrene copolymers, polyethylene terephthalate, cellophane, nylon, ethylene-vinyl alcohol copolymers, polymethylpentene, polyvinyl acetate, polylactic acid, polycaprolactone, polyhydroxyalkanoates, starch-based resins, and composites thereof, but biodegradable materials such as polyvinyl acetate, polylactic acid, polycaprolactone, polyhydroxyalkanoates, and starch-based resins are preferred. Also usable are laminates in which an aluminum layer is formed on paper or the like by deposition, or in which an aluminum layer is further provided on the surface of paper or the like and a laminate or coat layer of polyethylene, polypropylene, or the like is further provided on one or both sides of the aluminum layer. When the canopy portion 2 is made of a film or sheet material, such as PET, which is difficult to heat seal, if the surface to be joined to the side wall 3 is coated with, for example, polyethylene or polypropylene (OPP, CPP, etc.), joining by heat sealing can be easily performed.

[0034] When the canopy 2 of the lid 1 is made of a paper-based material or a film or sheet material, and the side of the canopy 2 that contacts the mouth of the container 101 is made of a material having heat sealability, the canopy 2 may be joined to the edge 103 of the container 101 by heat sealing, and the lid 1 may be removed from the container 101 while removing the seal at the time of use. In this way, it is possible to block the contents of the container 101 from the outside air until they are used. When the canopy 2 is made of a film or sheet material, it is preferable to use a material that is breathable and moisture-resistant, as this increases the ability to block outside air.

[0035] When closing a container 101 with the lid body 1 of the first embodiment, first, as shown in Fig. 10, the engagement portion 7 on one end side of the lid body 1 is fitted into the edge portion 103 of the container 101, and then the engagement portions 7 are sequentially fitted into the edge portion 103 in the opposite direction of the lid body 1, so that the lid body 1 is fitted into the container 101 and the lid can be closed as shown in Fig. 9. Since the lid body 1 of the first embodiment has flexibility as a whole and the lower wall 6 of the side wall 3 has elasticity in the thickness direction, even if the inner dimension of the lower end of the lower wall 6 is smaller than the outer dimension of the mouth of the container 101, the lid body 1 can be fitted into the container 101, and the container mouth (edge ​​portion 103) and the inner surface of the lower wall and the lower surface of the lid body 1 are in close contact with each other, so that the container 101 can be reliably closed with high sealing performance. The lid 1 of the first embodiment is not limited to containers having curled portions, and can be fitted into the mouth of any container to maintain high airtightness.

[0036] Next, the configuration of the opening forming portion 11 in the canopy portion 2 will be described. As shown in FIG. 1 and the like, the opening forming portion 11 has an opening 12 and a small lid piece 13. As shown in FIG. 1, the opening 12 is preferably formed inside the main body 2a1 in the top surface portion 2a. Also, the small lid piece 13 is preferably formed so as to be able to open and close the opening 12 of the main body 2a1. In this case, the small lid piece 13 and the opening 12 are formed so that the small lid piece 13 closes the opening 12 as shown in FIG. 1 and FIG. 4, and the small lid piece 13 opens and the opening 12 is open as shown in FIG. 3 and FIG. 5. The opening 12 constituting the opening forming portion 11 is formed so as to communicate the inside and outside of the canopy portion 2 and to penetrate between the front surface 2b and the back surface 2c of the canopy portion 2. For example, when the lid body 1 is attached to the container 101, this opening 12 is for opening and forming an entrance and exit for the contents (e.g., beverages, food, etc.) in the space portion 105 of the container 101. As shown in FIG. 1 and other figures, the opening forming portion 11 is provided in the canopy portion 2 at a position shifted from the center of the canopy portion 2 to a predetermined position in the direction toward the outside. The small lid piece 13 formed in the canopy portion 2 is formed so that one end 13a located at a position away from the center of the canopy portion 2 toward the outside at a predetermined distance is a free end, and the other end 13b located closer to the center than the one end 13a is a fixed end. In addition, in the small lid piece 13, the one end 13a is also referred to as a base end located closer to the center of the top surface portion 2a, and the other end 13b is also referred to as a tip end located on the edge side of the top surface portion 2a. The one end 13a that is the free end is also referred to as a tip, and the position between this tip and the other end 13b (hinge portion 14) that is closer to the one end 13a, which is the tip, than the other end 13b is referred to as a "position closer to the tip" or "closer to the tip".

[0037] A hinge portion 14 is formed at the other end portion 13b, and the small lid piece 13 is formed so as to be able to open and close via this hinge portion 14. In other words, the opening forming portion 11 is configured to rotate about the hinge portion 14 at the other end portion 13b of the small lid piece 13 as a fulcrum, and one end portion 13a opens and closes with respect to the canopy portion 2. Furthermore, the opening forming portion 11 is configured so that the opening 12 is formed when the small lid piece 13 is opened. Note that, when the small lid piece 13 opens and closes, it is preferable that a folding line 15 is formed in the hinge portion 14 (see FIG. 12(g)). This folding line 15 may be formed on the front surface 2b side and / or the back surface 2c side of the canopy portion 2. In this way, by forming the folding line 15 at the hinge portion 14, the small lid piece 13 can be easily opened and closed with reference to the folding line 15, and the other end 13b of the small lid piece 13 is folded at the location where the folding line 15 is formed, so that when the small lid piece 13 is folded at the hinge portion 14, i.e., when the small lid piece 13 is opened, it can be easily folded and folded neatly. In other words, by forming the folding line 15, it is possible to prevent the small lid piece 13 from being folded with a place other than the place where the folding line 15 is formed as a fulcrum. The folding line 15 can be pressed linearly, for example, by press molding. That is, the folding line 15 can be formed by performing a linear press at a predetermined place where the folding line 15 is to be formed by a press molding machine or the like. In this way, the small lid piece 13 is folded only at the specific place where the folding line 15 is formed, so that the variation in the position where the small lid piece 13 is folded can be greatly reduced. The folding lines 15 can be formed by any conventionally known method.

[0038] The opening forming portion 11 is configured so that when the small lid piece 13 is opened with the lid body 1 attached to the container 101, the space 105 of the container 101 can be seen through the opening 12. The location where the opening 12 is formed is preferably such that one end 12a of the opening 12 (the end on the same side as one end of the small lid piece 13) is located outside the inner wall 106 of the container 101 when the lid body 1 is attached to the container 101.

[0039] The opening forming part 11 has a folding line 15 formed at the location where the hinge part 14 is formed, and a cut line 16 is formed at the location other than the location where the hinge part 14 is formed, with a point joint 17 formed between the cut lines 16. This point joint 17 is for joining the small lid piece 13 to the top surface part 2a and maintaining the opening 12 in a closed state. By forming the opening forming part 11 in this manner, the small lid piece 13 can be maintained in a closed state due to the presence of the point joint 17 before use, and when pulled by a tab member 21 described later or pulled up by the tab member 21, the point joint 17 is cut and the joint at the point joint 17 is released.

[0040] In addition, the opening forming portion 11 may be formed as a half cut in which a cuttable line is formed along the overall shape of the small lid piece 13 (in other words, along the overall shape of the opening 12) in addition to being formed by the cut line 16 and the point joint 17 as described above. When formed as a half cut portion, there is no cut line 16 or point joint 17 as described above, and a cut is formed along the overall shape of the small lid piece 13 (or the opening 12). The depth of the cut in the half cut portion is thinner than the overall thickness of the canopy portion 2, and is formed so as not to penetrate between the front surface 2b and the back surface 2c of the canopy portion 2 like the cut line 16. When using these cut lines 16 and point joints 17 and half cut portions, in addition to forming half cut portions in place of the cut lines 16 and point joints 17 in these lids 1, the cut lines 16, point joints 17, and half cut portions may each be used.

[0041] As shown in FIG. 1 and other figures, the small lid piece 13 has a stress relief portion 18 formed at the other end 13b where the hinge portion 14 is formed, for reducing stress caused by a force applied when the small lid piece 13 is lifted up. In the example shown in FIG. 1 and other figures, the stress relief portion 18 is formed so as to be curved in a direction opposite to the direction in which the small lid piece 13 is formed at the location where the hinge portion 14 is formed, in a direction in which the distance between the cut lines 16 increases. The stress relief portion 18 is formed so that the end portion on the other end side of the cut line 16 is at a position shifted from the radial position where the hinge portion 14 is formed, that is, at a position toward the radial outside from the radial position. By setting the position of the end portion on the other end side of the cut line 16 in the stress relief portion 18 to the above-mentioned position, the cut line 16 is formed at a position adjacent to the hinge portion 14, thereby reducing the magnitude of the stress applied to that position. In order to reduce the magnitude of the stress generated at this position, the other end of the cut line 16 should be formed at a different location from the location where the hinge portion 14 is formed, rather than at the same location as the other end of the cut line 16. By forming the stress relief portion 18 in this way, the stress applied to the other end of the cut line 16 when the small cover piece 13 is opened can be reduced, and the problem of the canopy portion 2 being torn or broken when the small cover piece 13 is opened can also be eliminated.

[0042] As shown in Fig. 6, the cut line 16 may be formed by cutting perpendicularly from the front surface 2b to the back surface 2c of the canopy portion 2, or may be formed by cutting at a predetermined angle from the front surface 2b to the back surface 2c of the canopy portion 2. When the cut is formed perpendicularly from the front surface 2b to the back surface 2c of the canopy portion 2 as shown in Fig. 6, it is possible to make it relatively easy to open the small lid piece 13 along the cut line 16. When the cut line 16 is cut at a predetermined angle, the cut surface formed on the canopy portion 2 side and the cut surface formed on the small lid piece 13 side are in contact with each other. Therefore, when attempting to pull up the small lid piece 13 or when the container 101 is closed with the lid body 1, even if the small lid piece 13 is pressed from the back surface 2c side of the lid part 2 toward the front surface 2b side due to a change in the steam pressure in the space part 105, the cut surface on the small lid piece 13 side and the cut surface on the lid part 2 side come into contact with each other, making it difficult to open the small lid piece 13. Therefore, by forming the lid piece in this manner, it is possible to more effectively prevent the small lid piece 13 from opening unexpectedly. In addition, when the lid part 2 side and the small lid piece 13 side form inclined cut surfaces, it is preferable that the cut surface on the lid part 2 side is an inclined surface formed such that the end of the cut surface on the front surface side is closer to the center than the end of the cut surface on the back surface 2c side. In addition, it is preferable that the cut surface on the small lid piece 13 side is formed so that the end of the cut surface on the back surface 2c side is closer to the radial outward end of the cut on the front surface 2b side.

[0043] The opening forming portion 11 can be formed by, for example, a punching method using a Thomson die or a conventionally known method corresponding thereto. In addition, in order to form the opening forming portion 11 by the above-mentioned method, the thickness of the punching blade used in punching is preferably 1.0 mm or less. More specifically, it is more preferable that it is 0.7 mm or less, and further preferably 0.4 mm or less. When the thickness of the punching blade is 0.4 mm or less, even though the cut line 16 is formed, a gap from the cut line 16 is unlikely to be formed due to the characteristics of the paper material after cutting. Therefore, it is possible to greatly reduce leakage from the cut line 16. In this embodiment, the shape of the opening 12 is formed to correspond to the shape of the small lid piece 13, but the shape of the opening 12 is not limited to such a shape and may be formed to be different from the shape of the small lid piece 13. In this case, for example, when a gap is formed between the opening 12 and the small lid piece 13, it is desirable to prevent dust and the like from entering the inside of the container 101 through this gap. Therefore, from the viewpoint of ease of molding the lid body 1 and eliminating the risk of inclusion of foreign matter such as dust, it is preferable to form the shape of the opening 12 to be the same shape as the small lid piece 13.

[0044] In the case of the lid 1 of a container for holding a beverage as in this embodiment, the opening 12 is formed so as to function as a drinking spout that allows the beverage in the container 101 to flow out of the container 101 when a user drinks the beverage in the container 101. The opening 12 may also function as an insertion port through which an object such as a straw can be inserted into the space 105 of the container 101.

[0045] As shown in FIG. 1 and other figures, a tab member 21 is attached to the small lid piece 13. The tab member 21 has a joint 22 formed at one end 21a thereof, which is joined to the small lid piece 13 at a position near the tip of the small lid piece 13. That is, the joint 22 joined to the one end 21a of the tab member 21 is joined to the tip of the small lid piece 13. The joint 22 is intended to be joined to the small lid piece 13 by various methods such as ultrasonic bonding, heat sealing, and bonding with an adhesive. As a method of joining at the joint 22, it is preferable to use ultrasonic bonding from the viewpoints of ease of joining and strength of joining among the above-mentioned methods. The part of the one end 21a side where the tab member 21 is attached to the small lid piece 13 is attached to a position shifted from the center of the small lid piece 13, further to a position on the small lid piece 13 away from the center of the canopy part 2, and further to a position furthest from the center of the canopy part 2. That is, the tab member 21 is attached to the small cover piece 13 at a position close to the one end 13a, i.e., at a position toward the tip of the small cover piece 13. In other words, the tab member 21 is formed in the small cover piece 13 so as to be joined to one end side of the canopy portion 2. In particular, it is preferable that the joint portion 22 where the small cover piece 13 and the tab member 21 are joined is formed on the one end portion 13a side of the small cover piece 13 away from the hinge portion 14.

[0046] In this way, if the tab member 21 is joined to the small cover piece 13 at a position closer to the tip than the hinge portion 14, the distance to the point of force relative to the hinge portion 14 (fulcrum) can be increased. As a result, when the tab member 21 is lifted, for example, a force is applied to the small cover piece 13 via the tab member 21, releasing the joints at the point joints 17 and the half-cut portion, making it easier to open and close the small cover piece 13.

[0047] The tab member 21 has one end 21a attached to the small cover piece 13 and the other end 21b facing the one end 21a. The tab member 21 has a tab main body and a holding portion 23, and is preferably formed so that the holding portion 23 can protrude from the tab main body. In this case, the holding portion 23 is preferably formed in a position between the one end 21a and the other end 21b of the tab member 21, and is preferably formed in a claw shape by making a cut line 23a in the tab member 21 (more specifically, the tab main body). The holding portion 23 is formed in a position between the one end 21a and the other end 21b, but is preferably formed in a position close to the other end 21b of the tab member 21, in other words, at a position where a knob portion 24 described later is formed or at a position close to the knob portion 24. When the holding portion 23 is in the state shown in Figs. 1 and 4, the tab member 21 (tab main body) has a cut line 23a formed therein, but when the holding portion 23 is held by the insertion portion 26 formed in the canopy portion 2, that is, when the holding portion 23 formed in a claw shape in this embodiment is inserted as the insertion portion 26 into the cut line formed in the top surface portion 2a, the holding portion 23 is formed in a claw shape protruding from the tab member 21 (tab main body) toward the surface 2b of the canopy portion 2. In this embodiment, as shown in Fig. 1, the shape of the holding portion 23 is formed so that the tip 23b is triangular and the tip is rounded but pointed overall, but the shape of the holding portion 23 is not limited to a triangular shape. For example, the shape of the holding portion 23 can be any conventionally known shape, such as a polygonal shape such as a semicircular shape or a rectangular shape, or an elliptical shape. That is, the retaining portion 23 may have any shape as long as it can be inserted into the insertion portion 26 and can maintain the small cover piece 13 in an open state, in other words the opening 12 in an open state, when inserted into the insertion portion 26. The retaining portion 23 formed in such a shape is sometimes referred to as a retaining piece. Since the retaining piece is substantially the same concept as the retaining portion, hereinafter, the retaining portion and the retaining piece will be described using the same reference numerals.

[0048] As described above, the holding piece 23 is formed so as to protrude from the tab body of the tab member 21 when the small cover piece 13 is opened by pinching the tab portion 24 described later, as shown in FIG. 2 and FIG. 3. The holding piece 23 is preferably formed so as to protrude from the side of the tab member 21 where the tab portion 24 is formed, toward the side where the joint portion 22 is formed. By forming the holding piece 23 in this manner, it is possible to make it difficult for the holding piece 23 to come off the insertion portion 26 when inserted into the insertion portion 26, and it is possible to more reliably maintain the state in which the small cover piece 13 is opened, i.e., the state in which the opening 12 is opened. In addition, in order to make it easier to protrude the holding piece 23, a folding line 23c may be formed in the tab member 21. By forming such a folding line 23c, it is possible to make it easier to insert the holding piece 23 into the insertion portion 26, and it is possible to more reliably obtain the above-mentioned effect. Furthermore, the insertion portion 26 is formed so that the contents in the container 101 do not leak or spill before the holding portion 23 is inserted, and is formed to penetrate through the insertion portion 26 when the holding portion 23 is inserted.

[0049] As shown in FIG. 1 and FIG. 3, the tab member 21 has a knob 24 formed at a position on the other end 21b side. The knob 24 is formed to be wider than the joint 22 at the one end 21a, and is formed so that the user can easily grip the tab member 21 when opening the small lid piece 13 using the tab member 21, and can easily pull the small lid piece 13 when pulling it up to open it, and can easily push the opened small lid piece 13 when closing it. In this embodiment, the knob 24 is formed in a curved shape overall, but the shape of the knob 24 is not limited to a curved shape, and any shape that is easy for the user to grip and easy to operate the tab member 21 may be adopted. In addition, the knob 24 has a display 24a formed thereon. This display 24a may be formed in any way, and for example, in this embodiment, the word "OPEN" is written on it. By forming this display 24a, in this embodiment, it is possible to inform the user of what function the tab member 21 has. The characters displayed on the display unit 24a are not limited to the above example, and other characters may be displayed. The size of the display unit 24a and the font and color of the displayed characters may be arbitrarily adopted.

[0050] The gripping portion 24 is provided with a pattern 24b that imitates a person's facial expression. In this embodiment, as shown in FIG. 1(a), the pattern 24b is composed of a pattern drawn along the cut line 23a along which the holding portion 23 is formed, and a pattern drawn in a position adjacent to the base end of the cut line 23a. In this way, if the pattern drawn along the cut line 23a is the mouth of the person and the pattern drawn in a position adjacent to the base end of the cut line 23a is the eyes of the person, a design pattern is formed as if the person is smiling. Note that the cut line 23a is omitted in FIG. 1(b) in order to clearly show this pattern. Also, as shown in FIG. 3, when the holding portion 23 is inserted into the insertion portion 26 and the small lid piece 13 is opened, the pattern drawn along the cut line 23a remains as it is, but the pattern drawn in the vicinity of the base end of the cut line 23a is formed as the knob portion 24 rises, giving a different impression from the design pattern described above. That is, the pattern 24b is formed so that it has a different expression before and after the holding piece 23 is protruded. In this case, the pattern 24b changes three-dimensionally before and after the holding piece 23 is protruded, and the expression shown by the pattern before the holding piece 23 is protruded is different from the expression shown by the pattern after the holding piece 23 is protruded. By forming such a pattern 24b, it is possible to soften the user's feelings and make him feel warm. Generally, such a lid 1 is used without any printing, or is often used with the brand name or manufacturer of the contents printed on it, but by providing such a pattern 24b, even a lid 1 that tends to be impersonal can stimulate the user's sense of playfulness, soften the mood, evoke a warm feeling, and provide a high healing effect. Note that the above-mentioned embodiment of the pattern 24b is merely one example, and any pattern other than the above may be arbitrarily adopted and used as appropriate, and the pattern 24b may not be formed on the knob portion 24.In addition, in the above explanation, an imitation of a person's facial expression was given as an example of pattern 24b, but the pattern 24b used is not limited to an imitation of a person's facial expression, and for example, a store or brand logo or product name may be used as pattern 24a, or the knob portion 24 may simply be colored a specified color.

[0051] Moreover, it is preferable that the knob portion 24 is formed so as to stand up when the holding piece 23 is inserted into the insertion portion 26. By forming the knob portion 24 in this manner, not only can the visual effect of the above-mentioned pattern 24b be obtained, but also the complexity of the insertion action can be significantly reduced and the insertion can be made easier when inserting the holding piece 23 into the insertion portion 26. In addition, it is also easier for the user to grip the tab member 21 when pulling out the inserted holding piece 23 from the insertion portion 26, and operability can be improved.

[0052] If necessary, the other end 21b may be adhered to the top surface portion 2a using the adhesive or the like as described above, thereby preventing the tab member 21 from being damaged before use.

[0053] The material for forming the tab member 21 can be the same as the material for forming the canopy portion 2 and the side wall 3, for example, the above-mentioned paper-based material or other materials as appropriate. In addition, the material for forming the tab member 21 can be, for example, a piece of wood, a film-like material, a metal material, or the like. However, when using these materials, it is necessary that the holding portion 23 can be formed and that the holding portion 23 can be maintained in a state held in the insertion portion 26. In other words, the tab member 21 can be formed so that the user can pull up the small lid piece 13 by pinching and operating the knob portion 24, and further, the holding portion 23 is held in the insertion portion 26, and further, the opening 12 can be maintained in an open state while the holding portion 23 is held in a state inserted in the insertion portion 26. Any material may be appropriately selected and used as long as it is formed so that the user can pull up the small lid piece 13 by pinching and operating the knob portion 24, and the opening 12 can be maintained in an open state while the holding portion 23 is inserted in the insertion portion 26.

[0054] Next, the effect of the opening forming portion 11 in the lid body 1 according to the first embodiment will be described. First, as shown in FIG. 8(a), a user pinches the knob portion 24 of the tab member 21 in the lid body 1 and lifts the other end portion 21b of the tab member 21. At this time, as described above, if the other end portion 21b is joined to the canopy portion 2, the user releases the joining of the tab member 21 by peeling the tab member 21 from the surface 2b of the canopy portion 2 when pinching the other end portion 21b of the tab member 21, and pinches and lifts the tab member 21 by pinching the knob portion 24 at the other end portion 21b of the tab member 21. Next, as shown in FIG. 8(b), when a user pinches the knob portion 24 and pulls the tab member 21 in the B direction, the small lid piece 13 joined by the joint portion 22 at one end portion 21a of the tab member 21 is lifted in the C direction in the figure with the hinge portion 14 as a reference. At this time, the joint 22 is formed in a part of the small lid piece 13, more specifically, the joint 22 is formed near the tip of the small lid piece 13, and a non-jointed portion is formed between the small lid piece 13 and the tab member 21 at a location other than the joint 22. In this way, since the tab member 21 is joined at a position close to the one end 13a of the small lid piece 13, when the hinge portion 14 is considered as a fulcrum and the joint 22 is considered as a force point, the force in the direction B applied by the user through the joint 22 tends to rotate the small lid piece 13 in the direction C and lift it up. If the folding line 15 is formed at the location where the hinge portion 14 is formed at this time, the small lid piece 13 is more likely to be lifted in the direction C. Then, when the user further pulls the tab member 21 in the direction B, the small lid piece 13 continues to rotate in the direction C around the other end 13b, and the opening 12 is opened and formed. At this time, the user may pinch knob 24 and fold the other end 21b of tab member 21 so that holding portion 23 protrudes toward surface 2b of canopy 2, or may leave the other end 21b unfolded until it reaches the vicinity of insertion portion 26, and then insert holding portion 23 into insertion portion 26 and fold the other end 21b of tab member 21 to form holding portion 23 just before holding portion 23. Next, as shown in FIG. 8(c), the user inserts holding portion 23 into insertion portion 26.By inserting the tab member 21 into the holding portion 23 and the insertion portion 26 in this way, the position of the tab member 21 and the position where the small lid piece 13 opens are physically fixed. That is, for example, if an adhesive seal is used to keep the small lid piece 13 open, the back side of the small lid piece 13 often peels off immediately even if it is sealed, especially if the contents are a beverage or hot. Therefore, even if an adhesive seal is used to stop the small lid piece 13, the adhesive strength gradually weakens over time, and one of the seals peels off, causing the small lid piece 13 to return to its original position where it closes the opening 12. If such a movement of the small lid piece 13 occurs when, for example, the user brings the surface 2b of the canopy portion 2 close to the face to drink a beverage, the small lid piece 13 may touch the user's nose or face, causing discomfort to the user. However, in the lid body 1 according to the first embodiment, the tab member 21 is physically fixed by holding the holding portion 23 with the insertion portion 26, so that the movement of the small lid piece 13 to return to its original position over time can be reliably suppressed, and the opening 12 can be kept open. Therefore, even when a user tries to put the contents in the space 105 of the container 101 into his / her mouth, the small lid piece 13 does not touch the face, and the container can be used comfortably.

[0055] Furthermore, with the lid body 1 according to the first embodiment, the user operates the holding portion 23 to pull up the small lid piece 13, and can therefore open the opening 12 and operate the small lid piece 13 to close the opening 12 without touching the back side of the small lid piece 13. Therefore, for example, the user's fingers will not come into contact with the contents adhering to the back side of the small lid piece 13, making it hygienic and allowing comfortable operation when opening the opening 12.

[0056] Furthermore, according to the lid body 1 of the first embodiment, by operating the holding piece 23 in a state in which it is held by being inserted into the insertion portion 26, the small lid piece 13 can be operated in a direction in which the small lid piece 13 closes the opening 12. Therefore, by operating the holding piece 23, the small lid piece 13 can be easily opened and closed multiple times, and even if the contents in the container 101, such as a beverage, are not consumed within a short period of time, the small lid piece 13 can be easily closed and the small lid piece 13 can be kept closed. Furthermore, according to the lid body 1 of the first embodiment, since it is formed using a paper-based material, it is also possible to provide a lid body 1 that is environmentally friendly.

[0057] When the small lid piece 13 is opened in this manner, the opening angle θ of the small lid piece 13 shown in Fig. 8(c) is preferably greater than 90°, more preferably 100° or more, and even more preferably 120° or more. Also, it is more preferably 140° or more, and most preferably 178° or more or 180°. By opening the small lid piece 13 to such an angle, it is possible to prevent the small lid piece 13 from hitting the user's nose when the user tries to drink the contents, and it is possible to greatly reduce the discomfort felt by the user.

[0058] 12(a) to 12(f) show examples of the opening forming part 11. The embodiment of FIG. 12(d) is an example of the opening forming part 11 formed in the lid body 1 described above, but is also described here. The opening forming part 11 is specifically the same in shape as the small lid piece 13, and when the small lid piece 13 is opened, the opening 12 also has the same shape. Here, the shape of the opening forming part 11 is described, but the small lid piece 13 and the opening 12 are also described as including them. First, the opening forming part 11 is not limited to the shape described above, and may be any shape selected as shown in the modified example described later. For example, the opening forming part 11 shown in FIG. 12(a) has a point-like joint 17 formed at one end side, which is the one end 13a side of the opening forming part 11, and at one each on the left and right sides on the way from the one end side to the other end side, which is the other end 13b side. Also, on the other end side, which is the other end 13b side, the cut line 16 forming the opening forming part 11 is formed so as to draw an arc from the other end side to the one end side. Also, in this modification, a stress relief part 18 is formed on the other end 13b side of the cut line 16. This stress relief part 18 is formed in an arc shape, and the other end 13b side end of the cut line 16 is located above the other end 13b side end of the opening forming part 11. Also, this stress relief part 18 is formed so as to be located outside compared to the opening forming part 11. By forming the stress relief part 18 in this way, it is possible to prevent damage to the canopy part 2 due to the force applied to the small cover piece 13, etc., when the small cover piece 13 is moved to open the opening 12, etc.

[0059] The opening forming part 11 shown in FIG. 12(b) has the same shape as that shown in FIG. 12(a). In addition to the incision line 16, the opening forming part 11 shown in FIG. 12(b) has a folding line 15 formed on the base end side, and FIG. 12(c) has a folding line 31 formed on the tip end side of the small lid piece 13 in addition to the incision line 16. The folding line 15 and the folding line 31 thus formed are formed to specify the position where the end of the other end 13b side of the small lid piece 13 as the opening forming part 11 is folded when the small lid piece 13 as the opening forming part 11 is in a lying state (i.e., a state in which the opening 12 is closed) to an upright state (i.e., a state in which the opening 12 is opened). In this way, by forming the folding line 15 on the base end side of the opening forming part 11, the way in which the small lid piece 13 as the opening forming part 11 is raised when it is raised and the variation when it is raised can be effectively suppressed. Furthermore, by forming the folding line 31 at the end portion on one end 13a side of the opening forming portion 11, it is possible to specify the location where the canopy portion 2 in which the opening forming portion 11 is formed is folded. Therefore, it is possible to reduce the influence on the end portion on one end 13a side of the opening forming portion 11 when the opening forming portion 11 moves from a lying down state to an upright state.

[0060] 12(a) in that the width dimension at one end 13a side is larger than the width dimension at the other end 13b side. By forming the opening-forming part 11 in this way, not only can the above-mentioned effect be obtained, but also, for example, when solids such as ice are present in the contents of the container 101, it is possible to reliably prevent the solids such as ice from splashing into the mouth of the user when the user uses the container.

[0061] The opening forming part 11 shown in Fig. 12(e) has a width dimension opposite to that in Fig. 12(d). That is, this opening forming part 11 is different in that the width dimension on the other end 13b side is larger than the width dimension on the one end 13a side. By forming the opening forming part 11 in this way, not only can the above-mentioned effect be obtained, but also, for example, when solids such as ice are present in the contents of the container 101, the opening forming part 11 of this example can reliably prevent such solids from flying into the mouth of the user when the user uses the container. The opening-forming portion 11 shown in Fig. 12(f) is formed so that the stress relief portions 18 face inward. Even if the stress relief portions 18 face inward in this way, the ends of the cut lines 16 are located at positions different from the hinge portions 14, so that damage to the canopy portion 2 can be prevented in the same way as described above.

[0062] It is more preferable that the point joint 17 is formed at least at the tip of the one end side end, which is the end on the one end 13a side. Generally, the opening forming part 11 is applied with force by the user via the tab member 21. If the point joint 17 is not formed at the above-mentioned location, the opening forming part 11 will be lifted at the point where the user applies force, and the risk of the contents of the container 101 leaking out of the opening 12 can be greatly reduced. In the embodiment shown in Figures 8(a) to 8(c), the small lid piece 13 as the opening forming part 11 may be formed by forming a cut line 16 or by forming a half-cut part. The small lid piece 13 as the opening forming part 11 may also be formed in other embodiments.

[0063] 13, 22, and 23 show modified examples of the lid body 1 according to the first embodiment. In the modified examples shown in these figures, the configuration of the insertion portion 26 is different from that described above. First, the insertion portion 26 in the lid body 1 shown in FIG. 13 is composed of a main portion 26a and an auxiliary portion 26b. The main portion 26a is a portion into which the holding piece 23 is inserted, and the auxiliary portion 26b is formed so as to intersect with the main portion 26a. By forming the insertion portion 26 in this manner, as shown in FIG. 13(b), the main portion 26a can be easily moved in the up and down direction along with the movement of the holding piece 23 when the holding piece 23 is inserted into the insertion portion 26. Therefore, the holding piece 23 can be easily inserted into the insertion portion 26. It is preferable that the auxiliary portion 26b is formed so as to intersect with the main portion 26a at a portion away from the portion where the tab member 21 is provided with respect to the main portion 26a.

[0064] Also, the lid 1 shown in FIG. 22 is common to the modified example described above in that the insertion portion 26 is formed by the main portion 26a and the auxiliary portion 26b. In addition, the insertion portion 26 of the lid 1 according to this modified example is formed by the main portion 26a and the auxiliary portion 26b being continuously formed, and the end portion on one end side of the auxiliary portion 26b is the continuous portion 26c that is continuous with the main portion 26a. Also, the end portion on the other end side of the auxiliary portion 26b, which is located opposite to the end portion on the one end side that is the continuous portion 26c, is formed as the insertion auxiliary portion 26d. This insertion auxiliary portion 26d is formed in order to make it easier to deform the portion of the insertion portion 26 surrounded by the main portion 26a and the auxiliary portion 26b (hereinafter also referred to as the "insertion portion forming region 26e") in association with the action of inserting the holding piece 23 when the holding piece 23 is inserted into the insertion portion 26. It is preferable that the insertion auxiliary portion 26d is formed in a direction different from the direction in which the auxiliary portion 26b is directed from the end portion on one end side to the end portion on the other end side. For example, as shown in FIG. 22, it is preferable that the shape of the insertion auxiliary portion 26d is formed such that the end portion on the other end side of the auxiliary portion 26b is curved inward toward the insertion portion forming region 26e. By forming the insertion auxiliary portion 26d in this way, the part formed as the insertion portion forming region 26e in the insertion portion 26 can be more easily deformed with the insertion operation of the holding piece 23, and the insertion operation of the holding piece 23 can be performed more smoothly. Then, the holding piece 23 in the state where it is inserted into the insertion portion 26 can be maintained in a state where the back side of the holding piece 23, in other words, the surface side facing the top surface portion 2a in the state before the tab member 21 is used, is in contact with the insertion portion 26. Therefore, it is easier to physically maintain the state where the holding piece 23 is inserted into the insertion portion 26, and it is also possible to reduce the inconvenience of the holding piece 23 coming off the insertion portion 26 due to an unexpected impact or the like. On the other hand, when a user tries to pinch the knob portion 24 and pull the holding piece 23 out of the insertion portion 26, it is possible to pull it out smoothly, thereby greatly improving the operability when the user inserts the holding piece 23 into the insertion portion 26 or pulls the holding piece 23 out of the insertion portion 26.

[0065] The insertion auxiliary portion 26d may be in a form as shown in Fig. 23(a). Fig. 23(a) shows yet another modified example of the insertion portion 26 in the cover 1. In this example, the insertion auxiliary portion 26d in the insertion portion 26 is formed so as to draw a curve in a direction away from the insertion portion forming region 26e, in other words, toward the region opposite the insertion portion forming region 26e. The insertion auxiliary portion 26d may be formed in this manner.

[0066] FIG. 23(b) shows another modified example of the lid body 1. In the lid body 1 according to this modified example, a guide display part 27 is formed between the insertion part 26 and the edge part 2d of the top surface part 2a. The guide display part 27 is for informing the user of the position of the insertion part 26, thereby guiding the position to insert the holding piece 23. The guide display part 27 can be formed arbitrarily using a conventionally known method. For example, the guide display part 27 may be formed by embossing the top surface part 2a to form unevenness on the surface 2c of the top surface part 2a, or may be formed by printing on the surface 2c of the top surface part 2a. The guide display part 27 may also be formed by other methods. By forming the guide display part 27, for example, when a user pinches the knob part 24 of the tab member 21 to pull up the small cover piece 13 and open the opening 12, the user is informed of and guided to the position of the insertion part 26 into which the holding piece 23 is inserted, thereby making it possible to further improve the operability of the tab member 21 by the user. When forming the insertion portion 26 by a cut line as in this example, the user may be confused because he does not know the position of the cut line. In such a case, by forming the guide display portion 27 in this example, the position of the insertion portion 26 can be notified to the user, and the above-mentioned operability can be improved. Note that, in FIG. 23(b), a shape in which the position of the insertion portion 26 is indicated by an arrow is used as an example of the guide display portion 27, but the guide display portion 27 only needs to be able to guide the user to the position of the insertion portion 26, and the shape and configuration of the guide display portion 27 are not limited to this embodiment, and various embodiments may be arbitrarily adopted.

[0067] Next, other modified examples of the tab member 21 will be described with reference to Figs. 24 to 27. The tab member 21 shown in these examples has an identification display part 28 formed as a display part. The identification display part 28 is for making it easier to identify the type of contents (e.g., beverage) contained in the container 101 when the lid body 1 is used by closing the container 101. The identification display part 28 is formed so as to extend or protrude from the tab main body of the tab member 21 in the width direction, in other words, in a direction intersecting with the direction in which the tab member 21 is moved when the user operates the tab member 21, more specifically, in a direction perpendicular to the direction in which the tab member 21 is moved. In the example shown in Fig. 24, a total of four identification display parts 28 are formed, two on each end in the width direction, and each of them is marked with a mark indicating the type of contents, such as "Orange", "Cola", "Latte", and "Tea". As shown in the figure, the areas where the identification display parts 28 are formed are colored in a predetermined manner. In this case, the identification display part 28 may be colored in accordance with the color of the contents, for example, the identification display part 28 for "Orange" representing orange juice may be orange, the identification display part 28 for "Cola" may be brown, the identification display part 28 for "Latte" may be light brown, and the identification display part 28 for "Tea" may be light red or green, making it easier to identify at a glance. In this case, when the identification display part 28 is colored in a predetermined manner, the characters written in the identification display part 28 may be difficult to read in black depending on the color applied. In such a case, the characters written in the identification display part 28 may be written in white or in another color that is easy to read. In addition, by changing the colors of the identification display parts 28 in this way, the tab member 21 can easily give a vivid overall impression to a person who sees the lid body 1. Therefore, in combination with the effect of the pattern 24b imitating a human facial expression as in the tab member 21 in this example, it is possible to easily give a good visual impression to a person who picks up the lid body 1.

[0068] As shown in FIG. 24(b), the identification display part 28 is configured to be bent relative to the tub body. In this case, it can be made easier to fold by forming a notch or the like at the folding location as a folding assist part. When the identification display part 28 is folded in this manner, the user can tell at a glance what the contents of the container closed by the lid body 1 are by the identification display part 28. For example, as shown in FIG. 24(b), when the identification display part 28 of "Orange" among the identification display parts 28 of the tab member 21 is folded, the user can tell at a glance that the container 101 contains orange juice, and it is possible to easily prevent mistakes in taking the container. In addition, the identification display part 28 allows the person who provides the beverage to inform the contents of the container 101 by simply folding the identification display part 28 corresponding to the contents, so that mistakes in taking the container by the provider can be prevented, and the contents can be easily confirmed when providing the product to the customer, so that the beverage can be provided smoothly.

[0069] In the above description, the identification display parts 28 are colored differently, but all the identification display parts 28 may be colored the same color, or the identification display parts 28 may not be colored. The types of contents marked in the identification display parts 28 are not limited to those described above, and other types of contents may be used as appropriate. In the example shown in FIG. 24, four identification display parts 28 are formed, but the number of identification display parts 28 is not limited to four, and may be more or less than four. In FIG. 24(b), only the "Orange" identification display part 28 is folded, but it goes without saying that the other identification display parts 28 besides "Orange" can also be folded.

[0070] FIG. 25 shows another example of the identification display part 28 in the tab member 21. The identification display part 28 shown in FIG. 25 is formed so that the position of the folding auxiliary part 29 is located more inwardly of the tab main body than that shown in FIG. 24. By forming it in this way, even when the identification display part 28 is formed, not only can the same effect as described above be obtained, but the size of the tab member 21 can be reduced. In addition, in another example of the identification display part 28 shown in FIG. 26, the identification display part 28 is formed by making a cut in the tab main body. That is, this is an example in which the outer edge of the identification display part 28 is formed to be the outer edge of the tab main body. In this way, the identification display part 28 can be formed without changing the size or shape of the tab member 21 described above.

[0071] In addition, in the identification display section 28 described using these Figs. 24 to 26, as shown in Fig. 27, the indication of the contents may be provided on the back side of the identification display section 28. In this way, by providing the indication of the contents not only on the front side 28a of the identification display section 28 but also on the back side 28b, it is possible to easily identify the contents by looking at either the indication on the front side 28a or the back side 28b even when the identification display section 28 corresponding to the corresponding contents is folded as described above. Therefore, it becomes possible for a person who provides a beverage or a user who receives the beverage to more easily identify the contents. Note that the indication on the back side 28b of the identification display section 28 may be the same as or different from the indication on the front side 28a. For example, in the case of the identification display section 28 with the above-described notation "Orange", the front surface 28a may be colored orange and have "Orange" written in white letters, and the back surface 28b may have "Orange" written in black letters against the background color of uncolored paper, or the notation "Orange" on the back surface 28b may be written in the orange color used to color the front surface 28a. In this way, not only can it be easily identified which surface 28a or the back surface 28b of the identification display section 28 is displayed on, but also the type of contents can be easily identified. In addition, since the same color is used to color or write characters on both the front surface 28a and the back surface 28b of the identification display section 28, the user can check at a glance which type of contents is in which container. In this way, when the identification display part 28 is formed on the tab member 21, the contents of the container 101 can be identified by folding the identification display part 28 as explained above, preventing the mistaken picking up of a product and allowing the customer to eat or drink after knowing what the contents are, which also provides a sense of security. In the above explanation, it was explained that this identification display part 28 is configured so that the contents can be identified by folding it in a direction intersecting with the tab body, but it is preferable that the angle between the state before folding and the state after folding of the identification display part 28 is close to 180°.It is also preferable to configure the container 101 so that it can maintain the folded state when folded in this manner. By forming the container 101 in this manner, the identification display part 28 makes it easier to identify the contents of the container 101, and the user can eat and drink with a sense of security.

[0072] In addition, the identification display part 28 in the tab member 21 is not limited to the configuration described above. For example, as shown in FIG. 53, when displaying the type of contents such as "LATTE", a display part 300 with such display may be formed on the tab main body, and a predetermined portion of the outer periphery of the display part 300 may be formed as a bent part 301 that can be bent. When the identification display part 28 is formed by the display part 300 and the bent part 301 in this way, when the contents of the container 101 are, for example, latte, the bent part 301 corresponding to the part where the display part 300 displays "LATTE" is bent toward the tab main body. At this time, when the bent part 301 is bent to approximately 180°, a display window 302 is formed so that the display part 300 can be seen even if the bent part 301 is bent, as shown in FIG. 53(b). By forming the identification display part 28 in this way, it is possible to visually confirm that the contents displayed in the display window 302 are the contents of the container 101. In this way, by forming the identification display part 28, it is possible to easily confirm what the contents are for the user or provider, and it is possible to give a sense of security. Note that the method of identifying the contents by the identification display part 28 is not limited to the above. For example, the contents of the container 101 may be made known by breaking the folded part 301 described above, or the form may be other than the above as long as it is easy for the user or provider to confirm the identity of the contents.

[0073] Figures 14 to 21 show other examples of the canopy portion 2 and side wall 3 of the lid body according to the first embodiment. Note that what is shown here is merely an example, and it goes without saying that canopy portions 2 and side walls 3 of other configurations may be used. Note that for the sake of convenience, illustration of tab member 21 is omitted in Figures 14 to 17.

[0074] The cover 1 shown in FIG. 14 is in a form in which the rising portion 4 of the canopy portion 2 and the upper end of the side wall 3 are flush with each other. In this case, as shown in FIG. 14(a), not only the rising portion 4 and the upper end of the side wall 3 may be flush with each other, but also, as shown in FIG. 14(b), the rising portion 4 may be folded inward to make the height position of the bent portion that is the upper end of the rising portion 4 flush with the upper end of the side wall 3. Also, as shown in FIG. 14(c), the height position of the bent portion of the rising portion 4 may be made flush with the upper end of the side wall 3, while the folded portion of the rising portion 4 does not reach the canopy portion 2. Furthermore, as shown in FIG. 14(d) and (e), the upper end position of the folded portion of the side wall 3 folded outward may be made flush with the upper end position of the rising portion 4.

[0075] FIG. 15 shows an example in which a curled portion 41 is formed as a protruding portion at the upper end of the lid 1. The shape of the curled portion 41 may be formed in a curled shape as shown in FIG. 15, or may be formed in a flange shape by crushing a curled portion. The protruding portion here is a concept including a portion that protrudes outward from the side wall 3. FIG. 15(a) shows an example in which the rising portion 4 and the side wall 3 are formed flush with each other, and the curled portion 41 is formed on the side wall 3. FIG. 15(b) shows an example in which the curled portion 41 is formed on the side wall 3 as in FIG. 15(a), but the rising portion 4 is formed lower than the side wall 3. FIG. 15(c) shows an example in which the curled portion 41 is formed on the side wall 3, and the rising portion 4 protrudes higher than the upper end position of the side wall 3. FIG. 15(d) shows an example in which the upper end portion of the rising portion 4 is located above the upper end of the side wall 3 and further protrudes outward from the side wall 3 to form the curled portion 41. In this manner, the curled portion 41 can also be formed.

[0076] Furthermore, forming curled portion 41 not only increases the strength of side wall 3 and canopy 2, but also improves the heat insulating effect. For example, when drinking a hot beverage, the curled portion 41 can make it difficult for the lips to feel an unpleasant heat and improve the feel in the mouth.

[0077] Fig. 16 shows an embodiment in which the rising portion 4 protrudes upward from the side wall 3. For example, in Fig. 16(a), the rising portion 4 protrudes upward from the side wall 3, and in Figs. 16(b) and 16(c), the rising portion 4 is folded back inward, and the folded end protrudes above the upper end of the side wall 3. In Figs. 16(d) and 16(e), the side wall 3 is folded back outward, and the upper end of the rising portion 4 protrudes above the folded end.

[0078] Fig. 17 shows an embodiment in which the upper end of the rising portion 4 is formed at a position lower than the upper end of the side wall 3, which is the opposite of Fig. 16. In Fig. 17(a), the position of the upper end of the side wall 3 is higher than the upper end of the rising portion 4, while Figs. 17(b) and 17(c) show an example in which the rising portion 4 is folded back inward, and the upper end position of the side wall 3 is located higher than the upper end position of the folded back portion. Also, Figs. 17(d) and 17(e) show an example in which the side wall 3 is folded back outward, and the height position of the folded back portion is higher than the upper end position of the rising portion 4.

[0079] 18(a) and 18(b) show an example in which a sloping portion 51 is formed on the canopy portion 2. When the sloping portion 51 is formed on the canopy portion 2 in this way, for example, when the canopy portion 2 is returned to a horizontal state from a tilted state of the container 101 or the lid body 1 attached to the container 101 after drinking a beverage, the beverage remaining on the inner surface of the rising portion 4 is likely to return to the opening 12 along the sloping portion 51. By forming the sloping portion 51 in this way, the beverage is less likely to remain on the surface 2b of the canopy portion 2. When the sloping portion 51 is formed on the canopy portion 2 in this way, the position of the opening 12 may be formed at a position that avoids the sloping portion 51 as shown in FIG. 18(a), or may be formed so that the opening 12 is formed in a part of the sloping portion 51 as shown in FIG. 18(b). The shape of the side wall 3 may also be formed in a straight line as shown in FIG. 18(a), or may be formed so that the lower wall 6 bulges out as shown in FIG. 18(b). 18(c) shows an example of the lid body 1 described above, in which a guide portion 52 is formed at the lower end portion of the lower wall 6. This guide portion 52 is intended to make it easier to attach the lid body 1 to the container 101 when attaching it to the container 101. By forming this guide portion 52, it becomes possible to attach the lid body 1 to the container 101 more smoothly.

[0080] Fig. 19 shows the cover 1 described so far, with another example of the shape of the engagement portion 7 formed on the lower wall 6. Fig. 19(a) shows the form of the cover 1 described so far, in which the engagement portion 7 does not bulge outward, but is formed so as to have a linear tapered shape. Figs. 19(b) to (e) show the shape of the engagement portion 7, similar to that described in Fig. 19(a), which is formed so as to have a linear tapered shape, and in addition, no rising portion 4 is formed, and a falling portion 61 is formed by falling down the peripheral portion of the canopy portion 2. Cover 1 of such a shape may be used.

[0081] FIG. 20 shows an example of a lid 1 in which the periphery of the top surface 2a of the canopy 2 has a falling portion 61, a side wall 3 is formed to surround the periphery of the falling portion 61, and the falling portion 61 and the side wall 3 are joined together. The lid 1 in FIG. 20(a) has an engagement portion 7 formed in a straight line to have a tapered shape, while the lid 1 in FIG. 20(b) has an engagement portion 7 that bulges outward. The configuration of the engagement portion 7 is not limited to this embodiment, and the configurations described above may be used as appropriate. The lid 1 in the embodiment shown in FIG. 20(a) is shown in FIG. 21.

[0082] Second embodiment Next, the lid body 1 according to the second embodiment will be described. The lid body 1 according to the second embodiment is used by being joined along the edge 103 of the mouth 102 of the container 101. The lid body 1 is formed in a shape that covers the mouth 102 when joined to the mouth 102 of the container 101. As shown in Figs. 28(a), 28(b), 29, 30(a), 30(b), etc., the lid body 1 has a joining region R that is joined to the edge 103 of the mouth 102 of the container 101 and a portion corresponding to the joining region R (hereinafter, the portion corresponding to the joining region R is referred to as the "joint region corresponding portion Rd"). In addition, the lid body 1 is provided with a small lid piece 13 in a region (hereinafter, sometimes simply referred to as the region inside the joining region R, or the inner region Rn) of the exposed surface 70 of the lid body 1 in a plan view of the lid body 1 (the line of sight is the vertical direction). Other configurations may be formed in the same manner as in the first embodiment. Therefore, in the lid body 1, an opening 12 is formed when the small lid piece 13 is pulled up. Also, in the lid body 1, a tab member 21 is joined to the small lid piece 13. The small lid piece 13, opening 12, and tab member 21 of the lid body 1 according to the second embodiment are formed in the same manner as the small lid piece 13, opening 12, and tab member 21 provided in the canopy portion 2 of the first embodiment. In the lid body 1 as well, the small lid piece 13 and the opening 12 form an opening forming portion 11. Figures 28(a), 28(b), and 29 are diagrams showing one example of the lid body 1 according to the second embodiment.

[0083] (joint area) The joining region R is a region formed in a ring shape along the mouth 102 of the container 101 in a shape corresponding to the mouth 102. The width W (width along the inner and outer direction) of the joining region R is usually the same as or narrower than the width of the edge 103 of the mouth 102. However, this does not prohibit the width W of the joining region R from being wider than the width of the edge 103 of the mouth 102. The joining region R may be formed inside the outer peripheral edge 71 of the lid 1, or may be formed up to the outer peripheral edge 71 of the lid 1 as shown in FIG. 39. FIG. 39 is a plan view showing another example of the lid 1 according to the second embodiment. The position relative to the joining region R is determined as the position relative to the part of the lid 1 that forms the joining region R unless otherwise specified. For example, the inside (outside) of the joining region R indicates the inside (outside) of the part of the lid 1 that forms the joining region R unless otherwise specified.

[0084] (Small lid piece) The lid 1 is provided with a small lid piece 13. In the lid 1 according to the second embodiment, the small lid piece 13 is connected to a peripheral portion 72 including a joint region R. The peripheral portion 72 is formed of a portion that forms the exposed surface 70 of the lid 1 in a plan view of the lid 1, excluding the small lid piece 13. As shown in FIG. 30(a) and FIG. 30(b), in the lid 1, the small lid piece 13 is lifted in conjunction with the movement of the tab member 21 that is joined to the small lid piece 13 at the joint portion 22, as in the first embodiment. The small lid piece 13 has a hinge portion 14 that connects the peripheral portion 72 and the small lid piece 13, and as the small lid piece 13 is lifted around the connecting portion as a support shaft, the opening 12 is exposed. The small lid piece 13 is provided inside the joint region R in a plan view of the lid 1. 30(a) and 30(b) are diagrams for explaining a state in which the opening 12 is exposed as a result of the small cover piece 13 being lifted in the cover body 1 according to the second embodiment. In the following, a connecting portion (hinge portion 14) of the outer peripheral edge 73 of the small cover piece 13 that serves as a support axis when the small cover piece 13 is lifted is referred to as a hinge connecting portion 74.

[0085] The shape and structure of the small lid piece 13 are not particularly limited. The shape and structure of the small lid piece 13 may be the same as the various shapes and structures shown in the example of the first embodiment, as shown in Figures 28(a) and 28(b). In addition, as shown in Figure 29 and the like, the shape of the small lid piece 13 preferably has a contour shape in which at least a part of the outer periphery 73 of the small lid piece 13 extends along the inner end of the joining region R. In the example of Figure 29, the shape of the front end edge 75 of the outer periphery 73 of the small lid piece 13 is a shape that follows the inner end of the joining region R. In addition, at this time, the shape of the front end edge 75 tends to follow the inner end of the edge 103 of the mouth portion 102. Such a shape of the small lid piece 13 may be applied to the small lid piece 13 of the lid body 1 according to the first embodiment. In the following description of the lid body 1 according to the second embodiment, unless otherwise specified, the description will be continued using the case where the small lid piece 13 shown in Figure 29 is used as an example. In the example of the small cover piece 13 shown in FIG. 29, the outer periphery 73 is made up of a front edge portion 75, a hinge connection portion 74, and a side edge portion 76 connecting the front edge portion 75 and the hinge connection portion 74.

[0086] In the example shown in FIG. 30, the front edge 75 of the outer periphery 73 of the small lid piece 13 is preferably formed between positions PM1 and PM2 as shown in FIG. 32 in a plan view of the lid body 1. FIG. 32 is a diagram for explaining the position of the front edge 75. Position PM1 is an intersection position where an extended surface M1 of the inner periphery of the side wall 104 of the container 101 intersects with the exposed surface 70 of the lid body 1 when the lid body 1 is joined to the container 101. Position PM2 indicates an intersection position where a surface M2 extending from the position of the inner end of the joining region R along the thickness direction of the lid body 1 intersects with the exposed surface 70 of the lid body 1. However, this does not prohibit the front edge 75 of the small lid piece 13 from being out of the range between positions PM1 and PM2. For example, it is not prohibited that the front edge 75 is formed slightly toward the center of the lid body 1 from position PM2.

[0087] The outer peripheral edge 73 of the small lid piece 13 may form a cut portion that is cut from the peripheral portion 72, or may form a fragile portion that is partially joined, in a portion excluding the hinge connection portion 74. The cut portion can be formed by providing a cut line 16 along the boundary between the small lid piece 13 and the peripheral portion 72, as shown in the example of FIG. 29. The fragile portion can be formed by providing a structure (perforated structure) in which short cut lines 16 and point-like joints 17 are alternately arranged at the boundary between the small lid piece 13 and the peripheral portion 72, as shown in the example of FIG. 28, or by forming a half-cut structure. The half-cut structure can be a structure cut to a predetermined depth in the thickness direction of the lid body 1, as described later using, for example, FIG. 40(a) and FIG. 40(b).

[0088] In the lid body 1 according to the second embodiment, the small lid piece 13 can cover the opening 12 even after the opening 12 is exposed by raising the small lid piece 13. When the small lid piece 13 is raised, the opening 12 is exposed. This state is called an open lid state. A state in which the opening 12 is covered by the small lid piece 13 is called a closed lid state.

[0089] In the lid body 1, as shown in FIG. 35, in the closed state, the end face of the peripheral portion 72 can face the end face 73a (outer peripheral end face) of the outer peripheral edge 73 of the small lid piece 13. At this time, the part of the end face of the peripheral portion 72 facing the end face 73a of the outer peripheral edge 73 of the small lid piece 13 becomes the facing surface 77. In the lid body 1 according to the second embodiment, it is preferable that the end face 73a of the outer peripheral edge 73 and the facing surface 77 come into contact with each other to form a contact portion 78. When the lid body 1 is made of a paper-based material, such a lid body 1 can be formed, for example, by forming a cut line 16 at the boundary between the small lid piece 13 and the peripheral portion 72. When the cut line 16 is formed, the paper-based material forming the lid body 1 is cut while being compressed at the boundary between the small lid piece 13 and the peripheral portion 72. In addition, at this time, the paper-based material is likely to be in a stretched state near the boundary between the small lid piece 13 and the peripheral portion 72. Therefore, in a state where the end face 73a of the outer periphery 73 of the small lid piece 13 and the facing face 77 face each other (i.e., in the closed state), the end face 73a and the facing face 77 come into contact with each other at the cut line 16 to form a contact portion 78, and the contact portion 78 is likely to generate a force F where the small lid piece 13 and the peripheral portion 72 press against each other. When the small lid piece 13 is opened from such a closed state, at least a part of the end face 73a of the outer periphery 73 and the facing face 77 rub against each other. Therefore, in the closed state, the small lid piece 13 can tightly cover the opening 12 in the lid body 1, and the risk of liquid leaking from the inside of the container 101 through between the small lid piece 13 and the peripheral portion 72 can be reduced. However, in the lid body 1, the small lid piece 13 and the peripheral portion 72 are separated by the cut line 16, so that ventilation can be ensured, and steam can pass between the small lid piece 13 and the peripheral portion 72.

[0090] In addition, when the lid body 1 is formed of a paper-based material, it is preferable that a compressed portion 79 of the paper-based material constituting the lid body 1 is formed at the position of the end face 73a of the small lid piece 13 and in the vicinity of the facing surface 77, as shown in the example of FIG. 35. In the example of FIG. 35, the compressed portion 79 in the vicinity of the end face 73a of the small lid piece 13 is configured so that the compression ratio gradually increases and the thickness decreases toward the end face 73a. Also, the compressed portion 79 in the vicinity of the facing surface 77 is configured so that the compression ratio gradually increases and the thickness decreases toward the facing surface 77. In this case, even if the end face 73a and the facing surface 77 come into contact with each other with a relatively strong force, the contact portion 78 is unlikely to warp or bend, and the structure of the contact portion 78 can be firmly maintained.

[0091] Furthermore, in the lid body 1, from the viewpoint of forming a state in which the small lid piece 13 tightly covers the opening 12 in the closed state, the small lid piece 13 and the peripheral portion 72 may be formed as shown in FIG. 36. In FIG. 36, the shape of the outer periphery 73 of the small lid piece 13 is partially formed with a wavy structure, and the shape of the periphery of the opening 12 (the portion forming the facing surface 77 in the peripheral portion 72) is formed to match the shape of the outer periphery 73 of the small lid piece 13. When the small lid piece 13 and the peripheral portion 72 are formed in such a shape, at least a part of the contact portion 78 has a wavy structure, i.e., the area of ​​the contact portion 78 is increased, making it easier to maintain the state in which the small lid piece 13 tightly covers the opening 12.

[0092] (Tab member) The tab member 21 may be configured similarly to the tab member provided in the lid body 1 according to the first embodiment, as shown in Figures 28, 29, 30, etc. One end 21a of the tab member 21 is joined to a portion near the tip of the small lid piece 13 (a position close to one end 13a).

[0093] In the example of Figures 30(a) and 30(b), the tab member 21 has a holding piece 23 formed between the joint portion 22 and the knob portion 24, and is formed so that the holding piece 23 protrudes from the tab member 21 when the knob portion 24 is pinched to open the small cover piece 13. An insertion portion 26 into which the protruding holding piece 23 is inserted is formed in the peripheral portion 72. Furthermore, the holding piece 23 is inserted into the insertion portion 26 so that the small cover piece can be maintained in an open state. The insertion portion 26 may have a main portion 26a and an auxiliary portion 26b, as in the first embodiment.

[0094] 28 and 29, the tab member 21 is provided such that, in the closed state, at least a portion of the tab member 21 overlaps directly above the small cover piece 13. When formed in this manner, even in the closed state, by moving the tab member 21 to eliminate the rising of the small cover piece 13 while keeping the tab member 21 horizontally so that the tab member 21 is roughly parallel to the cover body 1, it becomes easier to stop the movement of the small cover piece 13 in a state in which a contact portion 78 between the end surface 73a of the small cover piece 13 and the facing surface 77 is formed.

[0095] In the example of Fig. 28 etc., the tab member 21 is arranged so that the knob 24 is located closer to the center of the lid 1 than the joint 22, but the arrangement of the tab member 21 is not limited thereto. The tab member 21 may be arranged so that the distance from the center of the lid 1 to the joint 22 and the distance from the center of the lid 1 to the knob 24 are the same, or the tab member 21 may be arranged so that the joint 22 is located closer to the center of the lid 1 than the knob 24, as shown in Fig. 47. From the viewpoint of fitting the tab member 21 within the exposed surface 70 of the lid 1 in a plan view of the lid 1, it is preferable that the tab member 21 is arranged so that the knob 24 is located closer to the center of the lid 1 than the joint 22, as shown in the example of Fig. 28 etc.

[0096] According to the second embodiment, like the lid 1 according to the first embodiment, it is possible to obtain a lid that allows the opening corresponding to the drinking spout to be opened simply and hygienically.

[0097] A modification of the lid 1 according to the second embodiment will be described.

[0098] (Variation 1) In the lid 1 according to the second embodiment, as shown in Figures 33(a) and 33(b), a groove 80 may be formed in the exposed surface 70 in a region corresponding to the inside of the bonding region R in a plan view of the lid 1 (simply referred to as the inside of the bonding region R) (Modification 1). Figures 33(a) and 33(b) are diagrams showing one example of the lid 1 according to Modification 1 of the second embodiment.

[0099] (groove) In the first modification, the groove 80 is preferably formed inside the joining region R so as to extend along the inner edge RA of the joining region R. The depth of the groove 80 is not particularly limited, but it is preferable that the groove 80 is configured so as to gradually become deeper from a position farther from the small lid piece 13 toward the small lid piece 13. Moreover, the groove 80 is preferably also formed in the small lid piece 13, as shown in the example of FIG. 33(a).

[0100] In the example of FIG. 33(a), the groove 80 is formed in a C-shape along the inner edge RA of the bonding region R, but may be formed in a ring shape.

[0101] Even when the groove 80 is formed, the outer peripheral edge 73 of the small cover piece 13, except for the hinge connection portion 74 (front edge portion 75, side edge portion 76), may form the cut line 16 as shown in FIG. 33(b), or may be a half-cut portion 81 as an example of a fragile portion as shown in FIG. 40(a) and FIG. 40(b). FIG. 40(a) and FIG. 40(b) are diagrams showing an embodiment of the cover body 1 when the groove 80 is formed. FIG. 40(b) is a partial enlarged view of the dashed line region X in FIG. 40(a). The half-cut portion 81 shown in this example is a portion formed by cutting the member forming the cover body 1 to a predetermined depth from the exposed surface 70 side of the cover body 1. That is, the half-cut portion 81 is a portion cut to an extent that does not penetrate the member forming the cover body 1, and has the half-cut structure described above. However, this does not limit the configuration of the half-cut portion 81. In the example shown in Figures 40(a) and 40(b), that is, when the outer peripheral edge 73 of the small cover piece 13 excluding the hinge connection portion 74 is a half-cut portion 81 serving as a weak portion, even if the groove 80 is made deeper and is formed across the boundary between the small cover piece 13 and the peripheral portion 72, a gap is less likely to occur at the intersection of the groove 80 and the boundary between the small cover piece 13 and the peripheral portion 72.

[0102] 33(a), there is one groove 80, but there may be multiple concentric grooves 80. When multiple grooves 80 are formed, one type of lid 1 can be used to cover the mouths 102 of multiple types of containers 101 having different diameters of the mouths 102.

[0103] According to the lid body 1 according to the first modified example of the second embodiment, when the lid body 1 is joined to the mouth 102 of the container 101 containing liquid, even if the liquid leaks from inside the container 101 onto the exposed surface 70 of the lid body 1, it is possible to make the liquid flow down into the groove 80 before spilling outside the lid body 1. Furthermore, if the groove 80 is formed so as to become deeper toward the small lid piece 13, the liquid that has flowed into the groove 80 can be made to flow down toward the position of the small lid piece 13. Then, by lifting up the small lid piece 13 to expose the opening 12, the liquid can be made to drip from the opening 12 into the container.

[0104] (protrusion) In the lid 1, it is preferable that the protrusion 82 is formed at a position corresponding to the formation position of the groove 80 and at a position on the opposite side to the formation surface (exposed surface 70) of the groove 80. In this case, as shown in FIG. 43, it is preferable that the protrusion 82 is formed at a position that contacts the inner surface side of the edge 103 of the mouth 102 of the container 101. In addition, it is preferable that the height of the protrusion 82 is ensured to a level that does not easily cause misalignment of the exposed surface 70 of the lid 1 in the planar direction with respect to the edge 103 of the mouth 102 of the container 101. Such a protrusion 82 can be realized by embossing the lid 1. By embossing, the groove 80 is formed on the exposed surface 70 side of the lid 1, and the protrusion 82 having a height corresponding to the depth of the groove 80 is formed at a position on the opposite side corresponding to the formation position of the groove 80. By forming groove 80 along the inside of edge 103 of mouth 102 of container 101, protrusion 82 can be formed along the inner end of edge 103 of mouth 102 of container 101 and in contact with the inner surface side of edge 103 of mouth 102 of container 101, as shown in Fig. 43. Fig. 43 is a cross-sectional view showing an example in which lid 1 is placed on container 101.

[0105] By forming such a protrusion 82, when the lid body 1 is placed so as to cover the mouth portion 102 of the container 101, it becomes easy to align the position of the lid body 1 with respect to the container 101.

[0106] (Variation 2) In the lid body 1 according to the second embodiment, as shown in FIG. 31, a knob 83 (tab) or a label 84 may be formed from the outer peripheral edge 73 of the lid body 1 toward the outside (Modification 1). The knob 83 is preferably formed at a position far from the opening start end (one end 13a) of the small lid piece 13. The shape and size of the knob 83 are preferably formed to a shape and size that allows a user to pinch it with the fingertips of the hand. By forming the knob 83 in this way, it is possible to reduce the risk of the hand touching the opening 12 when grasping the lid body 1, and to suppress contamination of the opening 12 due to the hand touching the opening 12. In the example of FIG. 31, the knob 83 is formed on the peripheral part 72 in a plan view of the lid body 1, and is formed in a part including the position of the outer peripheral edge 73 farthest from the one end 13a. The knob 83 may be provided with any marking 200 such as letters (e.g., letters such as "L" shown in FIG. 48) indicating the size of the lid body 1 or the container 101. The markings provided on the knob 83 are not limited to printing, and may be displayed as letters that can be seen by forming unevenness by embossing, or letters that can be seen by cutting out a shape corresponding to a letter (e.g., L) in the knob 83. Also, instead of or in addition to the above-mentioned marks, the knob 83 may be partially or entirely embossed or cut out. By processing the knob 83 in this way, it is possible to make it easier for the user to pick up the lid body 1 when picking up the lid body 1 by holding the knob 83. In the above example, an example in which the size of the lid body 1 or the container 101 is displayed by letters or the like is described, but the manner in which the size of the lid body 1 or the container 101 is displayed is not limited to the above example. For example, the shape and color of the knob 83 may be changed according to the size of the lid body 1 or the container 101, and the size of the lid body 1 or the container 101 may be identified by visually checking the shape and color. For example, when identifying by changing the shape of the knob 83, in addition to the shape of the knob 83 described above, the shape of the knob 83 may be changed, for example, as shown in FIG. 49(a) or FIG. 49(b), or may be made into a shape other than these so that it can be identified. Also, the size of the lid body 1 or the container 101 may be identified by a method other than these. Furthermore, the above is an example of identifying the size of the lid body 1 or the container 101, but the object to be identified is not limited to the size of the lid body 1 or the container 101, and other objects may be listed as the object to be identified.

[0107] The shape and size of the label 84 are not limited, but it is preferable that the label 84 has a shape and size that can be recognized by a user. In the example of Fig. 31, a plurality of labels 84 are formed near the tab 83 on the outer circumferential edge 73 of the lid 1. The labels 84 may be used, for example, as follows. That is, each of the plurality of labels 84 has an individual product name written thereon, and the label 84 on which the product name corresponding to the content of the container 101 is written is folded. In this way, even after the container 101 is attached to the lid 1, the content of the product contained inside the container 101 can be identified by recognizing the folded label 84.

[0108] In the examples of Figs. 54 and 55, a plurality of labels 84 are formed on the outer peripheral edge 73 of the lid 1. These labels 84 are configured so that they can be folded along the outer peripheral edge 73 of the lid 1. It is preferable that a folding portion 400 is formed at the boundary between the outer peripheral edge 73 and the label 84 to make the label 84 easy to fold. This folding portion 400 may have any configuration as long as it can make the label 84 easy to fold. For example, a perforation line may be formed at the boundary between the outer peripheral edge 73 and the label 84, a cut less than the thickness of the material constituting the lid 1 may be formed, a fold line may be formed, or a combination of these may be formed. In addition, as long as it can make the label 84 easy to fold, a configuration other than the above may be used. In the lid 1, individual product names such as "COLA", "LATTE", "TEA", and "OTHER" may be written at the locations corresponding to the locations where the labels 84 are formed. These individual product names are not limited to those described above, and may be written in other ways. In addition, it is preferable that at least a part of each of the individual product names is displayed inside the outer periphery 73, and it is preferable that all of the individual product names are displayed inside the outer periphery 73. By displaying them in this way, the product name can be more clearly seen. FIG. 55(a) is a plan view showing an example of use of the lid body 1 in this example. This example is an example of use when the content is cola. In this case, the label 84 corresponding to the part of the label 84 where "COLA" corresponding to cola is displayed is folded. FIG. 55(b) shows the state in which this label 84 is folded. The folding direction of the label 84 is not limited to the upward direction as shown in FIG. 55(b), but may be downward. In this way, when the label 84 corresponding to the content is folded, the other labels 84 are not folded, so that it is clearly visible that the contents are the ones indicated by the parts where the label 84 is folded, and store employees and purchasers can easily know what the contents are, and can eat and drink with peace of mind. In this example, the label 84 is folded, but the label 84 may be removed by tearing it off.In this case, it is also preferable to form the above-mentioned perforation line or the like at the location corresponding to the above-mentioned folded portion 400 in order to make it easier to tear off the label 84. In this way, even if the label 84 is torn off, it becomes easier to clarify what the corresponding contents are. Note that other configurations than folding or tearing the label 84 may be used as long as the configuration allows the contents to be clearly identified. Furthermore, the label 84 may be colored with a predetermined color or may be embossed, or any other conventionally known method may be selected and used as appropriate.

[0109] In the example of FIG. 31, the label 84 is formed on the peripheral portion 72 of the lid body 1, but may be formed on the tab member 21. For example, as shown in FIG. 45(a), a plurality of labels 84 may be formed around the tab member 21. In addition, when the tab 83 is formed, the label 84 may be formed on the tab 83 together with the insertion portion 26 or instead of the insertion portion 26, as shown in FIG. 45(b). The insertion portion 90 may be formed in the same structure as the insertion portion 26. In FIG. 45(b), the insertion portion 90 is formed in place of the insertion portion 26. The insertion portion 90 has the same function as the insertion portion 26. However, in this case, it is preferable that the size of the tab member 21 or the small lid piece 13 (the opening 12) is such that the holding piece 23 of the tab member 21 is inserted into the insertion portion 90 when the small lid piece 13 is lifted. Also, the tab member 21 may be locked by hooking the holding piece 23 at the position of the outer circumferential edge 73 of the lid 1. In this case, the insertion portion 26 of the lid 1 may be omitted.

[0110] As shown in FIG. 45(b), when the insertion portion 90 is formed in the tab 83, especially when the outline of the small lid piece 13 is formed by a half-cut line, there is no part in the area surrounded by the joining area R that communicates between the front and back surfaces of the top surface portion 2. Therefore, after the lid body 1 is sealed to the container 101 and before the user opens the small lid piece 13, the inside of the container 101 can be completely sealed, and it is possible to prevent foreign matter from entering from the outside, or the contents from leaking out of the container 101 when the user carries the container 1010 and shakes the container 101. In addition, when the insertion portion 90 is formed in the tab 83 in this way, the size of the small lid piece 13 and therefore the size of the opening 12 can be increased. In this way, if the opening 12 and the small lid piece 13 can be increased in size, it is possible to make it easier for the user to drink the contents, and it is also possible to greatly improve the ease of putting the contents, such as a beverage, into the inside of the container 101 through the opening 12.

[0111] In FIG. 45(b), the insertion portion 90 formed on the knob 83 is formed, and the retaining piece 23 is inserted to lock the tab member 21. However, as shown in FIG. 50(a), the retaining piece 23 may be hooked on the outer periphery 73 of the lid body 1 to lock the tab member 21. Also, as shown in FIG. 50(b), when the small lid piece 13 is reclosed, the retaining piece 23 may be hooked on the outer periphery 73 on the side adjacent to the small lid piece 13 so that the reclosed state of the small lid piece 13 can be maintained. When the reclosed small lid piece 13 is to be opened again, the hook between the outer periphery 73 and the small lid piece 13 may be released. Also, as shown in FIG. 56, instead of the insertion portion, a retaining receiving portion 401 formed to extend from the outer periphery 73 may be formed. When the holding receiver 401 is formed in this manner, the small lid piece 13 is held in an open state by, for example, hooking the holding portion 23 on the holding receiver 401, and when reclosing the small lid piece 13, the holding portion 23 is removed from the holding receiver 401, and the small lid piece 13 is reclosed. In this case, the holding receiver 401 only needs to be able to hold the holding portion 23, and the shape and size of the holding receiver 401 are not limited and may be selected arbitrarily. In this example, the holding piece 23 formed on the tab member 21 is hooked onto the outer periphery 73 to maintain the small lid piece 13 in an open state and in a reclosed state, but the configuration for maintaining the small lid piece 13 in an open state and in a reclosed state is not limited to the above, and other configurations may be selected and used as desired. For example, a seal member may be used instead of the tab member 21 to maintain the small lid piece 13 in an open state and in a reclosed state by adhesive action, or other members may be used to maintain the small lid piece 13 in the above-mentioned state.

[0112] (Variation 3) In the lid body 1 according to the second embodiment, as shown in Figures 34(a) and 34(b), the small lid piece 13 may be formed with a large dimension so that the entire tab member 21 overlaps with the small lid piece 13 in the closed state (Variation 3). However, even in Variation 3 of the second embodiment, the small lid piece 13 is formed inside the joining region R and has a smaller dimension than the lid body 1. Figures 34(a) and 34(b) are diagrams showing one example of the lid body 1 according to Variation 3 of the second embodiment.

[0113] In the lid body 1 according to the second embodiment, in the open state, the small lid piece may be cut at the hinge connection part of the outer periphery. In this case, as shown in FIG. 34(a), it is preferable that the hinge connection part 74 of the outer periphery 73 of the small lid piece 13 has the same configuration as the weak part. In FIG. 34(a), the weak part has a repeating structure (perforation structure) of the cut line 16 and the point-like joint part 17. In the example of FIG. 34(a), the part of the outer periphery 73 of the small lid piece 13 excluding the hinge connection part 74 is the cut line 16.

[0114] In the lid 1 according to the second embodiment, the hinge connection portion 74 may be omitted as shown in Fig. 34(b). In the example of Fig. 34(b), the outer peripheral edge 73 of the small lid piece 13 is a weakened portion. The weakened portion has a repeating structure (perforated structure) of the cut lines 16 and the point-like joints 17, similar to Fig. 34(a).

[0115] In such a third modification of the second embodiment, when the small lid piece 13 is lifted by the tab member 21 in the closed state, the small lid piece 13 is separated from the peripheral portion 72. Also, in the third modification of the second embodiment, the holding piece 23 and the insertion portion 26 may be omitted as shown in Fig. 34. However, in the present invention, from the viewpoint of obtaining the effect of holding the small lid piece 13 to the peripheral portion 72, it is preferable that the holding piece 23 and the insertion portion 26 are present.

[0116] (Variation 4) In the lid 1 according to the second embodiment, instead of forming a groove 80 on the inside of the joining region R, a recessed portion 85 may be formed by generally recessing the area inside the joining region R with respect to the portion corresponding to the joining region R, as shown in Figures 37(a) and 37(b) (Modification 4). Figures 37(a) and 37(b) are diagrams showing one example of the lid 1 according to Modification 4 of the second embodiment.

[0117] In the lid 1, it is preferable that the raised portion 86 is located on the opposite side to the surface (exposed surface 70) where the recessed portion 85 is formed. In this case, it is preferable that the outer peripheral end 86a of the raised portion 86 is formed so as to contact the inner surface side of the edge portion 103 of the mouth portion 102 of the container 101. In addition, it is preferable that the height of the raised portion 86 is ensured to be high enough to prevent misalignment with the mouth portion 102 of the container 101. Such a raised portion 86 can be realized by embossing the lid 1. By embossing, the recessed portion 85 is formed on the exposed surface 70 side of the lid 1, and the raised portion 86 having a height corresponding to the depth of the recessed portion 85 is formed at the opposite side position corresponding to the position where the recessed portion 85 is formed. By forming recess 85 so that its contour shape conforms to mouth 102 of container 101, protrusion 86 can be formed to contact the inner surface side of edge 103 of mouth 102 of container 101, as shown in Fig. 44. Fig. 44 is a cross-sectional view showing an example in which lid 1 is placed on container 101.

[0118] By forming such a raised portion 86, when the lid 1 is placed so as to cover the mouth 102 of the container 101, it becomes easy to align the lid with respect to the container 101.

[0119] (Variation 5) In the lid 1 according to the second embodiment, as shown in FIG. 41(a) and FIG. 41(b), an upper protuberance 87 may be formed on the inside of the joining region R (Modification 5). FIG. 41(a) and FIG. 41(b) are diagrams showing an example of the lid 1 according to Modification 5. The upper protuberance 87 is preferably formed in a region that avoids the small lid piece 13. In this case, even if liquid is contained in the container 101 and leaks onto the exposed surface 70 of the lid 1, the liquid tends to flow toward the small lid piece 13 formed downstream of the upper protuberance 87, so that the leaked liquid can be easily returned to the container 101 by opening the small lid piece 13 to expose the opening 12. In addition, the upper protuberance 87 may be formed with a slit 88 penetrating the lid 1. The slit 88 is formed to a size that allows a rod-like object such as a straw to be inserted from the outside. By forming the slit 88, the liquid in the container can be sucked out with a straw or the like. In the example of FIG. 41(a), the slit 88 is formed as a structural part in which a cross-shaped cut is made in the member that constitutes the lid 1, but the structure of the slit 88 is not limited to this.

[0120] (Variation 6) In the example of FIG. 44, the recess 86 is formed by recessing the entire area inside the joining area R, but in the lid 1 according to the second embodiment, as shown in FIG. 46(a) and FIG. 46(b), a partial recess 89 may be formed by partially recessing the area inside the joining area R (Modification 6). FIG. 46(a) is a plan view for explaining an example of the lid 1 according to Modification 6 of the second embodiment. FIG. 46(b) is a cross-sectional view showing a schematic state of the longitudinal section taken along line GG in FIG. 46(a). The partial recess 89 is formed outside the opening 12 and in the inner area Rn. In this example, the partial recess 89 has a recessed shape so as to form an inclined surface that slopes downward toward the opening 12. In this example, a partial protrusion 91 is formed in a shape corresponding to the part where the partial recess 89 is formed on the side opposite to the exposed surface of the lid 1. The formation of the partial raised portion 91 makes it easier to position the lid 1 on the mouth 102 of the container 101. As shown in Figure 46, when partial recess 89 is formed outside opening 12 so as to avoid the position of opening 12, when a pressing process or the like is performed to form partial recess 89, pressing force is unlikely to be applied to portion 160 near mouth 12, so there is no risk of point joint 17 on the periphery of opening forming portion 11 being cut and opening 12 being opened.

[0121] (Variation 7) As shown in FIG. 51, the lid 1 may have a window 201 formed on the inside of the joining region R. By forming the window 201, when the lid 1 is joined to the container 101 and sealed, the contents of the container 101 can be visually confirmed, and the contents can be easily confirmed, providing a sense of security. The film material used for the window 201 may be made of synthetic resin, biodegradable resin, or the like. Examples of synthetic and natural resins include olefin resins such as polyethylene (PE) and polypropylene (PP), styrene resins such as polystyrene (PS), acrylic resins such as polyacrylate and polymethacrylate, vinyl resins such as polyvinyl chloride (PVC) and polyvinyl acetate, polyamide resins, polyimide resins, polyester resins such as polyethylene terephthalate (PET), fluorine resins, polycarbonate resins (PC), polyether resins such as polyether ether ketone (PEEK) and polyether sulfone (PES), and the like. Examples of biodegradable resins include microbially produced biodegradable resins such as polyhydroxyalkanoates (PHAs) and PHA-based copolymers; natural product-based biodegradable resins such as cellulose derivatives such as cellulose acetate and starch-based resins whose main raw material is starch such as corn starch; lactic acid-based resins such as polylactic acid (PLA), polylactic acid / polycaprolactone copolymers, and polylactic acid / polyether copolymers; succinate-based resins such as polybutylene succinate (PBS), polybutylene succinate adipate (PBSA), and polyethylene terephthalate succinate (PETS); chemically synthesized biodegradable resins such as polycaprolactone and polyvinyl alcohol (PVA); and others such as polyglycolic acid (PGA), polybutylene adipate / terephthalate, and biodegradable polyolefins (product surface: Biorecover, product name: Cra Drop, etc.). Among these, biodegradable resins that cause less environmental pollution are preferred. Furthermore, when the product to be stored in the container is a liquid, a material that has excellent water resistance, oil resistance, etc. is preferred.

[0122] (Variation 8) As shown in Fig. 52, the lid 1 may be raised on the inside of the joining region R. By forming a raised raised portion 202 in this manner, the space in which the contents are accommodated in the container 101 can be increased, and for example, when the contents is liquid such as coffee, even when a creamy substance is placed on top of the liquid, it is possible to greatly reduce contact with the back surface of the lid 1. The height of the raised portion 202 may be determined arbitrarily.

[0123] Each aspect of the second embodiment of the lid of the present invention may be applied to each aspect of the first embodiment. For example, the configurations of the window and raised portion described in modified examples 7 and 8 of the second embodiment may be applied to the lid of the first embodiment, and configurations other than the window and raised portion may also be appropriately applied to the lid of the first embodiment.

[0124] (Examples) The lid 1 according to the second embodiment can be used for a container 150 with a lid, as shown in Fig. 38. Fig. 38 is a cross-sectional view showing an example in which the lid 1 according to the second embodiment is joined to the edge 103 of the mouth 102 of a container 101 having a mouth 102. The method of joining the lid 1 and the container 101 is not particularly limited, and any joining method such as crimping or heat sealing can be used as appropriate. do.

[0125] The container 101 has a main body having a cylindrical side wall 104 and a bottom surface 107 whose diameter increases toward the top, forming a space 105 inside, and a mouth 102 that opens at the upper end of the main body (the upper end of the side wall 104). Although not shown, the mouth 102 of the container 101 is formed in a circular shape. However, the container 101 shown here is an example, and does not limit the configuration of the container 101. For example, the mouth of the container may be formed in a rectangular shape. The container may be any type as long as the mouth can be covered with a lid. In addition, the object stored inside the container is not particularly limited, and examples include liquid objects, solid objects, and combinations thereof.

[0126] In the container shown in Fig. 38, a curled portion 108 is formed by outwardly winding a member forming the body of the container at edge 103 of mouth 102, but container 101 is not limited to this. An end face of side wall 104 may be exposed at edge 103 of mouth 102, or, as shown in Fig. 42, a flange 110 extending toward the outside of mouth 102 of container 101 may be formed at edge 103 of mouth 102. In the example of Fig. 41, container 101 and lid 1 are joined at flange 110.

[0127] The lid according to the second embodiment may be combined with a container having a mouth.

[0128] What has been described in the explanation of the second embodiment may be applied to the lid of the first embodiment as long as the effect of the invention is not lost. The application example may also be applied to the lid of the first embodiment. What has been described in the explanation of the first embodiment may also be applied to the lid of the second embodiment as long as the effect of the invention is not lost.

[0129] As described above, the lid 1 according to the present invention can be applied to many of these lids. It can also be applied to lids 1 in other embodiments than those described above. The lid according to the present invention has been described in detail above, but the above are merely examples of the lid according to the present invention and are not limited to these. Therefore, the lid may be appropriately modified within the scope of the present invention. In addition, the configuration of the lid described above may be applied by using the configuration of each example of the lid independently, or by combining the configurations of each example of the lid.

[0130] The present invention described above encompasses the following technical ideas. (1) A lid formed to be able to open and close the mouth of a container, A top surface portion is provided so as to cover the mouth portion when the lid is closed, The top surface portion has a small lid piece and an opening portion that is formed when the small lid piece is lifted up, The small lid piece has a joint portion that is joined to one end of the tab member, The joint is formed in a part of the small lid piece, the tab member has a knob portion formed at the other end thereof and a holding piece formed between the joint portion and the knob portion, The top surface portion is formed with an insertion portion into which the holding piece is inserted, The retaining piece is formed so as to protrude from the tab member when inserted into the insertion portion, and is formed so that the small lid piece can be maintained in an open state when inserted into the insertion portion. (2) the top surface portion has an edge portion, The small lid piece has a cut end portion located toward the center of the top surface portion and a tip portion located toward the edge portion, The lid according to (1) above, wherein the joint portion is formed closer to the tip portion. (3) The lid body according to (1) or (2) above, in which a non-jointed portion is formed between the small lid piece and the tab member. (4) A lid body according to any one of (1) to (3) above, in which the position where the non-jointed portion is formed is located closer to the center of the top surface portion than the position where the jointed portion is formed. (5) The lid according to any one of (1) to (4) above, wherein the tab member has a bent portion formed at the end portion on the other end side of the joint portion. (6) The tab member has a main body portion between the joint portion and the knob portion, The lid according to any one of (1) to (5) above, wherein the holding piece is formed on the main body portion and is formed so as to protrude from the main body portion. (7) A lid body according to any one of (1) to (6) above, wherein the knob portion is formed so as to rise up from the main body portion when the holding piece protrudes from the main body portion. (8) A lid body according to any one of (1) to (7) above, wherein the holding piece is formed so as to protrude from the knob side toward the joint side. (9) A lid body according to any one of (1) to (8) above, wherein the insertion portion has a main portion into which the holding piece is inserted and an auxiliary portion that intersects with the main portion. (10) The main portion and the auxiliary portion are formed continuously, The lid body according to (9) above, wherein the auxiliary portion is formed so that the direction of the end portion opposite to the continuous portion that is continuous with the main portion is different. (11) A lid according to any one of (1) to (10) above, wherein the tab member has a pattern imitating a human facial expression on the gripping portion. (12) The lid body according to the above (11), wherein the pattern has a different appearance before and after the retaining piece is protruded. (13) The lid according to any one of (1) to (12) above, wherein the tab member has an indication portion for providing a predetermined indication. (14) The lid body according to (13) above, wherein the display portion has a marking indicating the type of contents contained in the container. (15) The lid according to any one of (13) to (14) above, wherein the display unit is formed on the main body and is formed so as to be foldable relative to the main body. (16) The display unit has a front surface and a back surface, The cover according to any one of (13) to (15) above, wherein the markings are provided on the front and back surfaces. (17) The lid according to any one of (13) to (16) above, wherein the display portion has a folding auxiliary portion formed at a folding location relative to the main body portion. (A1) A lid formed so as to be able to open and close the mouth of a container, a top surface portion formed to cover the mouth portion when the container is closed in a state where the container is attached; The top surface portion includes a small lid piece and an opening portion that is formed when the small lid piece is lifted up. A tab member is attached to the small lid piece, The small lid piece has a joint portion that is joined to one end of the tab member, The tab member has a knob portion formed at the other end of the tab member. Lid body. (A2) A lid having a joining area to be joined to the periphery of the mouth of a container, The container has a shape that covers the mouth when joined thereto, The container has a small lid piece, a tab member joined to the small lid piece, and an opening formed when the small lid piece is lifted up, The small lid piece is provided inside the joining area, One end of the tab member and the small lid piece are joined together, When the joint portion between the one end portion and the portion near the tip is defined as a joint portion, The tab member has a knob portion formed at the other end of the tab member. Lid body. (A3) The tab member has a holding piece formed between the joint portion and the knob portion, and is formed so that the holding piece protrudes from the tab member when the knob portion is pinched to open the small cover piece, The top surface portion is formed with an insertion portion into which the protruding holding piece is inserted, The lid body described in (A1) above, which is configured so that the holding piece can be inserted into the insertion portion to maintain the small lid piece in an open state. (A4) The tab member has a holding piece formed between the joint portion and the knob portion, and is formed so that the holding piece protrudes from the tab member when the knob portion is pinched to open the small cover piece, An insertion portion into which the protruding holding piece is inserted is formed, The lid body according to (A2) above, which is configured so that the holding piece can be inserted into the insertion portion to maintain the small lid piece in an open state. (A5) The lid according to (A3) or (A4) above, wherein the knob portion is formed so as to stand up when the holding piece is inserted into the insertion portion. (A6) The lid according to any one of (A3) to (A5) above, wherein the holding piece is formed so as to protrude from the knob side toward the joint side. (A7) The lid according to any one of (A3) to (A6) above, wherein the insertion portion has a main portion into which the holding piece is inserted and an auxiliary portion that intersects with the main portion. (A8) The lid according to any one of (A3) to (A7) above, wherein the tab member has a pattern imitating a human facial expression provided on the gripping portion. (A9) The lid according to (A8) above, wherein the pattern changes three-dimensionally before and after the holding piece is protruded. (A10) having an exposed surface when joined to the container; The lid body described in (A2) above, wherein at least a portion of the outer peripheral edge of the small lid piece extends along the inner edge of the joining area and is formed outside the intersection position between the exposed surface and the extended surface of the inner peripheral surface of the container when joined to the container. (A11) The small cover piece has a facing surface facing the outer peripheral end surface of the small cover piece when the small cover piece is in a closed state, The lid body according to any one of (A1) to (A10) above, wherein when the small lid piece is opened from the closed state, at least a part of the outer circumferential end surface rubs against the opposing surface. (A12) The lid according to any one of (A1) to (A11) above, wherein a window is formed in the top surface portion. (A13) The lid according to any one of (A1) to (A12) above, wherein the top surface portion has a raised portion at least in part. (A14) A lid according to any one of (A1) to (A13) above, which is made of a paper-based material. (A15) A combination of a container and a lid, comprising a container having a mouth and the lid described in any one of (A1) to (A14) above. (A16) A container having a mouth and a lid according to any one of (A1) to (A14) above, A container with a lid, the mouth of which is covered with a lid. [Explanation of symbols]

[0131] 1: Lid 2: Canopy 2a:Top section 2b: Surface 2c: Back 3: Side wall 3a: Exterior wall 3b:Top edge 3c: Bottom edge 3d: step 4: Rising section 4a: Inner surface 5: Upper wall 5a: Inner surface 6: Lower wall 7: Engagement part 8: Bottom end 9: Folded part 9a: Opposite surface 10: Bottom junction 11:Aperture forming part 12: Opening 12a: One end side end 13: Small lid piece 13a: One end 13b: Other end 14: Hinge part 15: Folding line 16: Cut line 17: Point joint 18: Stress relief section 21: Tab member 21a: One end 21b: Other end 22: Joint 23: Holding piece (holding part) 23a: Cut line 23b:Tip 23c: Fold line 24: Knob 24a: Display section 24b: Design 26: Insertion section 26a: Main part 26b: Auxiliary part 31: Folding line 41: Curl section 51: Inclined part 52: Induction part 61: Falling part 70:Exposed surface 71: Outer edge 72: Periphery 73: Outer edge 73a: End face 74: Hinge connection part 75: Front edge 76: Side edge 77: Facing surface 78: Contact part 79: Compression section 80: Groove 81: Half cut section 82: Protrusion 83: Picking 84: Label 85: Recess 86: Protuberance 86a: Outer edge 87: Upper ridge 88: Slit 101: Container 102: Mouth 103: Edge 104: Side wall 105: Spatial part 106: Inner wall 107: Bottom part 108: Curl section 110: flange 121:Protruding wall 150: Container with lid 160: Area near the opening F :Force M1: Extension surface M2: Surface R: Junction area RA: Common Marriage Rn: Inner area X: Dashed area a :Arrow θ: angle

Claims

1. A lid having a joining area to be joined to the periphery of the mouth of a container, The container has a shape that covers the mouth when joined to the container, The container comprises a small lid piece, a tab member joined to the small lid piece, and an opening formed when the small lid piece is pulled up, The small lid piece is provided inside the joining area, The small lid piece has a joining portion joined to one end of the tab member, The tab member has a knob portion formed at the other end thereof, the tab member has a holding piece formed between the joint portion and the knob portion, and is formed so that the holding piece protrudes from the tab member when the knob portion is pinched to open the small lid piece, An insertion portion into which the protruding holding piece is inserted is formed, The holding piece is configured to be inserted into the insertion portion to maintain the small lid piece in an open state, A window portion is formed inside the bonding area. Lid body.

2. The lid according to claim 1 , wherein the knob portion is formed so as to stand up when the holding piece is inserted into the insertion portion.

3. The lid according to claim 1 or 2, wherein the holding piece is formed so as to protrude from the knob side toward the joint side.

4. The lid according to claim 1 , wherein the insertion portion has a main portion into which the holding piece is inserted and an auxiliary portion that intersects with the main portion.

5. The lid according to any one of claims 1 to 4, wherein the tab member has a pattern imitating a human face on the grip portion.

6. The lid according to claim 5, wherein the pattern changes three-dimensionally before and after the holding piece is protruded.

7. having an exposed surface in a state of being joined to the container; The lid body described in claim 1, wherein at least a portion of the outer peripheral edge of the small lid piece extends along the inner edge of the joining area and is formed outside the intersection position between the exposed surface and the extended surface of the inner peripheral surface of the container when joined to the container.

8. The small lid piece has a facing surface that faces the outer end surface of the small lid piece when the small lid piece is in a closed state, The lid body according to claim 1 , wherein when the small lid piece is opened from the closed state, at least a part of the outer peripheral end surface rubs against the facing surface.

9. The lid according to claim 1 , which is made of a paper-based material.

10. A container having a mouth and a lid according to any one of claims 1 to 9. A combination of a container and a lid.

11. A container having a mouth and the lid according to any one of claims 1 to 9, The mouth of the container is covered with a lid. Container with lid.

Images