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

Abstract

To provide a lid capable of suppressing blowing out of content from the lid when the lid is attached to a container, a container with the lid, and a combination of the lid and the container.SOLUTION: A lid main body has an insertion portion configured to be able to form an insertion hole, and the insertion portion has a hole cover portion that covers the insertion hole and a weakened portion that forms at least a part of an outer periphery of the hole cover portion, and the weakened portion includes a plurality of cut portions that penetrate the main body in a thickness direction of the main body, and non-penetrating portions that avoid penetrating the main body.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] 2. Description of the Related Art It is common for food, beverages and the like (hereinafter also referred to as "contents") to be placed in a container having an opening and then provided in the form of a covered container with a lid attached.

[0003] From the viewpoint of reducing the environmental load, it is required to use a lid made of a paper-based material for the lid attached to the container. As a method for attaching a lid to a container, a method (sealing method) is known in which the lid is joined to the edge forming the outer periphery of the opening at the upper end of the container by a method such as heat pressing. When the content contained in the lid is a liquid such as a soft drink or a carbonated drink, Patent Document 1 discloses a method for ingesting the content by forming an insertion part for forming an insertion hole in the lid and inserting a straw or the like into the insertion part to suck out the content. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2012-153382 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the technology described in Patent Document 1, when a user carries a container with a lid, the vibration of the container with a lid may cause the contents to leak from the insertion part, and in particular, when the contents are gas-generating contents such as carbonated drinks, the contents may spray out from the insertion part. In addition, when the lid is made of a material that may have hygroscopic or water-absorbent properties such as paper-based materials, gaps are likely to be formed in the insertion part, increasing the risk of the contents spraying out from the insertion part. Therefore, there is room for improvement in terms of suppressing the spraying out of the contents from the lid.

[0006] The present invention has been made in consideration of such problems, and aims to provide a lid, a container with a lid, and a combination of a lid and a container that can prevent contents from spilling out of the lid when the container is in the lid state. [Means for solving the problem]

[0007] The present invention relates to the following (1) to (13).

[0008] (1) A lid having a body formed so as to be able to contact a container having an opening and an edge portion forming an outer periphery of the opening, the body having an insertion portion configured so as to be able to form an insertion hole, the insertion portion having a hole cover portion covering the insertion hole and a weakened portion forming at least a part of the outer periphery of the hole cover portion, the weakened portion having a plurality of cut portions penetrating the body in the thickness direction of the body and a non-penetrating portion that avoids penetrating the body, the insertion hole being formed by applying stress from the outside to the insertion portion along the thickness direction of the body, when the insertion hole is formed, the non-penetrating portion is broken, and the broken non-penetrating portion forms a fracture surface on a part of the outer periphery of the hole cover portion, the hole cover portion is displaced together with the fracture surface, and at least a part of the fracture surface is located at the tip of the hole cover portion. (2) A lid having a main body formed so as to be able to contact a container having an opening and an edge portion forming an outer periphery of the opening, the main body having an insertion portion configured to be able to form an insertion hole, the insertion portion having a hole cover portion covering the insertion hole and a weakened portion forming at least a part of the outer periphery of the hole cover portion, the hole cover portion having corners forming a convex outline portion in a plan view of the main body, the weakened portion having a plurality of cut portions penetrating the main body in the thickness direction of the main body and a non-penetrating portion that avoids penetrating the main body, the insertion hole being formed by applying stress from the outside to the insertion portion along the thickness direction of the main body, and when the insertion hole is formed, the non-penetrating portion is broken, and the broken non-penetrating portion forms a fracture surface on a part of the outer periphery of the hole cover portion, the hole cover portion is displaced together with the fracture surface, and at least a part of the fracture surface is located at the corner of the hole cover portion. (3) A lid body as described in (1) above, in which a plurality of fracture surfaces are formed when the non-penetrating portion is fractured, and at least a portion of at least one of the fracture surfaces is located at the tip portion of the hole lid portion. (4) A lid body as described in (1) or (2) above, wherein the weakened portion has a plurality of the non-penetrating portions, and at least one of the non-penetrating portions is broken by applying external stress to the insertion portion along the thickness direction of the main body. (5) A lid body as described in (1) or (2) above, wherein the insertion portion has a plurality of the hole cover portions, and when the insertion hole is formed, the fracture surface is formed on a portion of the outer peripheral edge of each of the hole cover portions. (6) The lid body according to (1) or (2) above, wherein the non-penetrating portion has a half-cut structure in which the main body is cut to a predetermined depth in the thickness direction of the main body. (7) The lid according to (1) or (2) above, wherein the weakened portion has a structure in which at least three of the cut portions are formed around the non-penetrating portion. (8) The lid according to (1) or (2) above, further comprising a protruding portion, and the insertion portion is formed within the protruding portion. (9) The lid body according to (1) or (2) above, wherein the main body is formed from a paper-based material. (10) A lid body as described in (1) or (2) above, having a joint area corresponding portion corresponding to the area to be joined to the container along the edge of the container, and a lid area corresponding portion consisting of a portion inward from the joint area corresponding portion, and the insertion portion is formed in the lid area corresponding portion. (11) A lid body as described in (1) or (2) above, wherein a side wall is provided around the outer periphery of the main body, and the side wall is configured to be capable of engaging with the container along the edge of the container. (12) A lid body as described in (1) or (2) above, wherein the cut portion has a peripheral portion and an end portion, and when two different cut portions are designated as a first cut portion and a second cut portion, the arrangement of at least one pair of the first cut portion and the second cut portion is such that the non-penetrating portion is formed between the end portion of the first cut portion and the peripheral portion of the second cut portion. (13) A container with a lid, comprising the lid described in (1) or (2) above, and a container having an opening and an edge portion that forms the outer periphery of the opening, and the lid is joined to the container. (14) A combination of a lid and a container, comprising the lid described in (1) or (2) above and the container having the opening and the edge portion that forms the outer periphery of the opening. Effect of the Invention

[0009] According to the present invention, it is possible to provide a lid, a container with a lid, and a combination of a lid and a container that are capable of preventing the contents from spilling out of the lid when the container is in the lidded state. [Brief description of the drawings]

[0010] [Figure 1]Fig. 1A is a plan view showing an example of a cover according to the first embodiment. Fig. 1B is a cross-sectional view showing a cross-section along line AA in Fig. 1A. Fig. 1C is a cross-sectional view showing a cross-section of a portion corresponding to the cross-section along line AA in Fig. 1A for another example of the cover according to the first embodiment. [Diagram 2] Fig. 2A is a plan view showing a state in which an insertion hole is formed in an example of the lid according to the first embodiment, and Fig. 2B is a cross-sectional view showing a state of the vertical cross section taken along line BB in Fig. 2A. [Diagram 3] Fig. 3A is a plan view showing one embodiment of a container with a lid, and Fig. 3B is a cross-sectional view showing a schematic vertical cross section taken along line CC in Fig. 3A. [Figure 4] 4A to 4H are diagrams showing an example of the layout of weakened portions in an example of a cover according to the first modified example of the first embodiment. [Diagram 5] Fig. 5A is a plan view showing another example of the cover according to the modified example 2 of the first embodiment, and Fig. 5B is a cross-sectional view showing a schematic vertical cross section taken along line DD in Fig. 5A. [Figure 6] Fig. 6A is a plan view showing an example of a cover according to the second embodiment, and Fig. 6B is a cross-sectional view showing a schematic vertical cross section taken along line EE in Fig. 6A. [Figure 7] Fig. 7A is a plan view showing a state in which an insertion hole is formed in an example of a cover according to the second embodiment, and Fig. 7B is a cross-sectional view showing a state of a vertical cross section taken along line FF in Fig. 7A. [Figure 8] 8A to 8E are diagrams showing an example of the layout of weakened portions in an example of a cover according to the first modified example of the second embodiment. [Figure 9] Fig. 9A is a perspective view showing an example of a cover according to a first example of the third embodiment, and Fig. 9B is a cross-sectional view showing a schematic state of a vertical cross section taken along line GG in Fig. 9A. [Figure 10] Fig. 10A is a perspective view showing an example of a cover according to a second example of the third embodiment, and Fig. 10B is a cross-sectional view showing a schematic vertical cross section taken along line HH in Fig. 10A. [Figure 11] Fig. 11A is a plan view showing one embodiment of a container with a lid, and Fig. 12B is a cross-sectional view showing a schematic vertical cross section taken along line II in Fig. 11A. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] 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 a container that can hold various items other than food and beverages, such as parts such as bolts and nuts, and items other than those mentioned above. 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 shape of the lid body is not limited to a circular shape when viewed in a plane, and can be applied to 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.

[0012] Hereinafter, a first embodiment, a second embodiment, a third embodiment, and an application example related to the present invention will be described in order with reference to the drawings. In this specification and the drawings, components having substantially the same functional configurations are denoted by the same reference numerals, and duplicated explanations will be omitted.

[0013] The following description is a preferred specific example of the present invention, and the contents of the present invention are not limited to these embodiments. In the following description, directions such as front-back, left-right, up-down, and horizontal directions are shown for convenience of explanation, but the contents of the present invention are not limited to these directions. In the examples of Figs. 1 to 11, the Z-axis direction is the up-down direction (upper side is +Z direction, lower side is -Z direction), the X-axis direction is the front-back direction (rear side is +X direction, front side is -X direction), the directions along the X-axis and Y-axis that are perpendicular to each other and defined on a plane with the Z-axis direction as the normal line are the X-axis and Y-axis directions, and further, the XY plane that is the plane attached by the X-axis and Y-axis is the horizontal plane, and the description will be based on these. The relative magnitude ratios of sizes and the like shown in each of Figs. 1 to 11 are described for convenience, and do not limit the actual magnitude ratios unless otherwise specified.

[0014] [1 First embodiment] [1-1 Configuration] The cover 1 according to the first embodiment has a main body 2 .

[0015] (Main body) The main body 2 is formed so as to be in contact with the container 101 having an opening 102 and an edge 103 which forms the outer periphery of the opening 102, as described later with reference to Figs. 3A and 3B. Figs. 3A and 3B are perspective and cross-sectional views showing an example of a container with a lid 150 in which the lid 1 shown in Figs. 1A and 1B is attached to the container 101. In the example of Fig. 3A, the container 101 has an opening 102 at the top end in the vertical direction. The lid 1 in the first embodiment can be used as the container with a lid 150 by joining the main body 2 along the edge 103. Fig. 3B is a cross-sectional view showing a schematic vertical cross section of line CC in Fig. 3A. It is to be noted that the container 101 is preferably one having flexibility at the edge 103 of the opening 102. However, these do not prohibit the container 101 from being a container with little or no flexibility, such as a metal container.

[0016] The lid 1 according to the first embodiment has a joining region R in the main body 2. In the lid 1, the region that is joined to the edge portion 103 in a plan view of the lid 1 is called the joining region R. In Fig. 1A, the region corresponding to the joining region R in the main body 2 is the region on the opposing surface 73 side among the hatched portions. Fig. 1A is a plan view that typically shows one example of the lid 1 according to the first embodiment.

[0017] In the example of FIG. 1A, the joining region R corresponds to a region that is formed in a generally annular shape along the opening 102 of the container 101 in accordance with the opening 102.

[0018] 1A and 1B, the main body 2 of the lid body 1 according to the first embodiment has a joint region corresponding portion 5A and a lid region corresponding portion 5B. Fig. 1B is a cross-sectional view showing a schematic vertical cross section taken along line AA in Fig. 1A.

[0019] (Part corresponding to the bonding area) The joint area corresponding portion 5A is a portion of the lid 1 corresponding to the area to be joined to the container 101 along the edge 103 of the container 101. That is, the joint area corresponding portion 5A is a portion of the lid 1 corresponding to the joint area R (an area facing the edge 103 of the container 101 and joined to the container 101). In the lid-equipped container 150, the joint area corresponding portion 5A is a portion of the lid 1 that forms the joint portion 151 between the lid 1 and the container 101. Specifically, in a plan view of the lid 1 (in the example of FIG. 1A, the Z-axis direction (vertical direction) is the line of sight), the portion that forms the joint area R is defined as the joint area corresponding portion 5A. The joint area corresponding portion 5A is usually formed in a ring shape as shown in FIG. 1A. In particular, when the edge 103 of the container 101 is formed in a roughly circular shape as shown in FIG. 1A, the joint area R becomes a ring shape, and the joint area corresponding portion 5A also becomes a roughly circular shape in a plan view of the lid 1. The outer edge of the joining region corresponding portion 5A is determined according to the position of the outer edge of the joining region R. The outer edge of the joining region corresponding portion 5A may be located on the outer periphery of the lid body 1, or may be located inside the outer periphery of the lid body 1 as shown in the example of Fig. 1A. When the joining region R between the lid body 1 and the container 101 is not formed continuously, the portion sandwiched between adjacent joining regions R and facing the edge portion 103 is also included in the joining region corresponding portion 5A described later.

[0020] (Corresponding part of the lid area) The lid region corresponding portion 5B is a portion of the lid 1 that is inward from the joint region corresponding portion 5A. In other words, the lid region corresponding portion 5B is a portion inward from the inner edge of the joint region corresponding portion 5A, and the outer peripheral edge of the lid region corresponding portion 5B is common to the inner edge of the joint region corresponding portion 5A. The lid region corresponding portion 5B is a portion that covers the opening 102 in the lid-equipped container 150. As shown in the example of FIG. 1A, the portion of the lid 1 that is outward from the outer peripheral edge of the lid region corresponding portion 5B is referred to as the outer region corresponding portion 5C.

[0021] (insertion part) The main body 2 has an insertion part 6 configured to be able to form an insertion hole. The insertion hole HL is a hole into which a member can be inserted from the outside, and a specific example of a member inserted from the outside is a straw or the like. The insertion hole HL is formed by applying stress from the outside to the insertion part 6 along the thickness direction of the main body 2, as shown in Figs. 2A and 2B. In this case, the hole cover part 7 is pushed open, and the hole-like opening formed by the pushing open becomes the insertion hole HL. Fig. 2A is a diagram showing a state in which the insertion hole HL is formed by applying stress from the outside to the insertion part 6 in the downward direction (-Z direction) in the cover body 1 according to the first embodiment. Fig. 2B is a cross-sectional view showing a schematic cross-sectional state of the line BB in Fig. 2A.

[0022] The position of the insertion portion 6 is not particularly limited, but in the example of FIG. 1A, it is formed in the lid region corresponding portion 5B. Also, in this example, it is formed near the center CT of the lid region corresponding portion 5B. The arrangement of the cutout portion 10, which will be described later and which forms the insertion portion 6, is not limited to the example of FIG. 1A. The position of the cutout portion 10 may be determined so that the insertion portion 6 shown in FIG. 1A is in an appropriately rotated state.

[0023] The insertion portion 6 has a hole cover portion 7 and a weakened portion 8 .

[0024] (hole cover) The hole cover portion 7 is composed of a portion that covers the insertion hole HL. The hole cover portion 7 is a portion surrounded by a portion (hinge corresponding portion 9) that becomes a hinge portion when the insertion hole HL is formed (when the insertion hole HL is pushed open) and a weakened portion 8 described later. In the example of FIG. 1A, four hole cover portions 7 are formed around the non-penetrating portion 11 that forms the weakened portion 8. In this example, the two hole cover portions 7 are divided by the cut portion 10 as a boundary. Note that when the insertion hole HL is formed, it includes not only a case where the hole cover portion 7 rotates at a certain angle around a specific position as an axis, but also a case where the hole cover portion 7 is gradually curved and displaced toward the tip portion 7A of the hole cover portion 7 with the hinge corresponding portion 9 as the base end (base end of the hole cover portion 7).

[0025] (Weakening part) The weakened portion 8 is a portion that forms at least a part of the outer peripheral edge 70 of the hole cover portion 7, and is a portion that can form the outline of the hole cover portion 7 together with the hinge corresponding portion 9. The weakened portion 8 has a cut portion 10 and a non-penetrating portion 11. When a force is applied to the weakened portion 8 to lift or push down the weakened portion 8 to form a divided portion in the main body 2, the weakened portion 8 guides the position where the division occurs (division position). For example, in the example of FIG. 1A, when a force is applied to push down the portion corresponding to the insertion portion 6 from the exposed surface 72 side to the opposing surface 73 side, the non-penetrating portion 11 is broken to generate a fracture surface 12 as shown in FIG. 2A and FIG. 2B, and division occurs along the cross section that forms the fracture surface 12 and the cut portion 10, and the hole cover portion 7 is pushed down, forming the insertion hole HL (the insertion hole HL is opened).

[0026] (Notch) The cut portion 10 penetrates the main body 2 in the thickness direction (Z-axis direction) of the main body 2. A plurality of cut portions 10 are formed in the main body 2. In the example of FIG. 1A, each cut portion 10 is formed to have a linear cut line, but this is just one example. Note that in FIG. 1A, for convenience of explanation, the cut portion 10 is shown with a relatively large width. The same applies to FIGS. 2 to 11.

[0027] In the cover 1 according to the first embodiment, the cut portion 10 may be formed in a curved shape, for example, as shown in FIG. 4C, FIG. 4D, etc. The cut portion 10 is arranged radially around the non-penetrating portion 11 described later, but this is also one example and is not limited to such an arrangement. However, from the viewpoint of facilitating the formation of a configuration in which at least a part of the fractured surface is located at the tip of the hole cover portion 7 as described later, it is preferable that the cut portion 10 is arranged radially around the non-penetrating portion 11. The cut portion 10 has a structure (a penetrating structure) cut in the vertical direction (thickness direction, Z-axis direction) from one surface (exposed surface 72) of the main body 2 to the other surface (opposing surface 73). The cut portion 10 has a peripheral surface portion 20 and an end portion 21. The peripheral surface portion 20 extends in the longitudinal direction of the cut portion 10, and the end portion 21 is formed at the cut end (the end of the peripheral surface portion 20). The cut portion 10 can function as a gas vent portion. Here, the gas vent portion refers to a portion that allows gas to pass from one surface side of the main body 2 to the other surface side (from the opposing surface 73 side to the exposed surface 72 side).

[0028] In addition, in the weakened portion 8, a structure in which at least two cut portions 10 are formed around the non-penetrating portion 11 is formed, and preferably a structure in which three or more cut portions 10 are formed as shown in FIG. 4A is formed. If at least three cut portions 10 are formed around the non-penetrating portion 11, a state in which the hole cover portion 7 is formed so as to surround the periphery of the position corresponding to the non-penetrating portion 11 with the fracture surface 12 formed by the destruction of the non-penetrating portion 11 positioned at the tip portion 7A of the hole cover portion 7 can be formed, and when a straw or the like is inserted into the insertion hole HL, it becomes easy to support the straw or the like evenly with the hole cover portion 7. In this respect, as shown in FIG. 1A, four cut portions 10 may be formed around the non-penetrating portion 11, or five or more cut portions 10 (six cut portions 10 are formed in the example of FIG. 4B) may be formed around the non-penetrating portion 11 as shown in FIG. 4B.

[0029] (Non-penetrating part) The non-penetrating portion 11 is a portion of the weakened portion 8 that avoids penetrating the main body 2. The non-penetrating portion 11 can be determined as a portion that is planned to form a portion (fracture surface) of the outer peripheral edge 70 of the hole cover portion 7 excluding the hinge corresponding portion 9 and the peripheral surface portion 20. In the example of FIG. 1A, the arrangement of the non-penetrating portion 11 is determined so that the cut portions 10 are radially arranged around the non-penetrating portion 11. In addition, in the example of FIG. 1A, the non-penetrating portion 11 is formed as a portion (continuous portion) that avoids forming a cut in the main body 2. However, it is not prohibited that the non-penetrating portion 11 is a portion that is cut halfway into the main body 2 (a portion that forms a half-cut structure in which the cut is made to a predetermined depth so as not to penetrate the main body 2), and for example, the non-penetrating portion 11 may be a portion having a half-cut structure (half-cut portion 16) as shown in FIG. 1C. FIG. 1C is a cross-sectional view showing an embodiment in which the non-penetrating portion 11 has a half-cut structure. The half-cut portion 16 is not limited to a portion cut into the thickness direction of the main body 2 up to half the thickness of the main body 2. The half-cut portion 16 includes a structure cut into the thickness direction of the main body 2 up to half the thickness or more while avoiding penetrating the main body 2, and a structure cut into the thickness direction of the main body 2 up to less than half the thickness of the main body 2.

[0030] 1A, there is one non-penetrating portion 11, but there may be more than one non-penetrating portion 11. For example, in the example of FIG. 4D, the cut portions 10 are formed in curved linear shapes, and three non-penetrating portions 11 are provided between the ends 21 of two different cut portions 10.

[0031] (Fracture surface) When an insertion hole HL is formed by the stress applied to the insertion portion 6, the non-penetrating portion 11 is broken, and the hole cover portion 7 is forced open as a result, and the broken non-penetrating portion 11 forms a fracture surface 12 on part of the outer periphery 70 of the hole cover portion 7. The fracture surface 12 in this specification is a surface formed when a member forming the main body 2 is torn apart by the stress applied to the insertion portion 6.

[0032] (Interrelationship between hole cover, non-penetrating part, cut part and fracture surface) When the insertion hole HL is formed in the lid 1, the hole cover portion 7 is pushed by the action of an external force applied to the insertion portion 6 (the tip portion 7A of the hole cover portion 7 is pushed out in the direction in which the external force acts), and when the tip portion 7A of the hole cover portion 7 is pushed out, the hole cover portion 7 is displaced together with the fracture surface 12. In the lid 1 according to the first embodiment, at this time, at least a part of the fracture surface 12 is located at the tip portion 7A of the hole cover portion 7. The fracture surface 12 is formed in a shape according to the fracture state of the non-penetrating portion 11. In the example of FIG. 1A, a state is formed in which the fracture surface 12 is formed at the tip portion 7A of the hole cover portion 7. For example, when the non-penetrating portion 11 is cut crosswise to form the fracture surface 12, the tip portion 7A of each hole cover portion 7 is formed in an angular (pointed) shape, and the end face of the portion of the outer periphery 70 of the hole cover portion 7 corresponding to the tip portion 7A is formed by the fracture surface 12.

[0033] In the cover 1 according to the first embodiment, when the non-penetrating portion 11 is broken to form a plurality of fracture surfaces 12, at least a portion of at least one of the fracture surfaces 12 is located at the tip 7A of the hole-covering portion 7. For example, when the non-penetrating portion 11 is broken to form two fracture surfaces 12, it is sufficient that at least one of the fracture surfaces 12 is formed so that a portion thereof is located at the tip 7A of the hole-covering portion 7.

[0034] 1A, when the insertion portion 6 has a plurality of hole-covering portions 7 and an insertion hole HL is formed, it is sufficient that a fracture surface 12 is formed on a tip portion 7A of at least one of the hole-covering portions 7. However, for each hole-covering portion 7, a fracture surface 12 is formed on a part of an outer circumferential edge 70 of the hole-covering portion 7.

[0035] (Body material) From the viewpoint of reducing the environmental load, the main body 2 is preferably made of a paper-based material. Examples of paper-based materials include so-called paper obtained by spreading a slurry of a fiber raw material onto a screen, drying or pressing and drying, and making a sheet, so-called airlaid sheets obtained by stacking spread fiber raw materials such as ground pulp obtained by crushing a raw material sheet made of pulp-based fibers or the like in a crusher using an air flow and fixing 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, and the like, and laminates of multiple sheets of these. The paper-based material may be made of pulp alone or may contain non-pulp-based natural fibers, synthetic fibers, recycled fibers, etc., but preferably contains 50% or more by mass of pulp, more preferably contains 70% or more by mass, and even more preferably contains 80% or more by mass, and is particularly preferably made of 100% by mass of pulp. The paper-based material may be a composite material with a synthetic or natural resin film or nonwoven fabric, wood-based materials such as wood foil, or even aluminum foil, but when it is made into a composite material, it is preferable that the composite material as a whole contains 50% or more by mass of pulp, and is particularly preferable that it contains 80% or more by mass of pulp. The higher the pulp content, the easier the paper-based material is to biodegrade, which is preferable.

[0036] It is preferable that the main body 2 is entirely made of the above-mentioned paper-based material, but this does not prohibit it from being partially or entirely made of a material other than the paper-based material. For example, the main body 2 may be made of a laminate of a paper-based material and a resin film material.

[0037] [1-2 Actions and Effects] In a conventional container with a lid attached to a container, when a user carries the container with the lid, the vibration of the container with the lid during the movement causes the contents to leak from the insertion part. In particular, when the contents generate gas, such as a carbonated drink, there is a risk that the contents will be sprayed out together with the gas when the gas is released from the insertion part. Therefore, there is room for improvement in terms of preventing the contents from spraying out of the lid in the container with the lid.

[0038] According to the cover 1 of the first embodiment, the insertion portion 6 has a hole cover portion 7 and a weakened portion 8, and the weakened portion 8 has a cut portion 10 and a non-penetrating portion 11. The non-penetrating portion 11 is formed so that a fracture surface 12 resulting from the destruction of the non-penetrating portion 11 is located at the tip portion 7A of the hole cover portion 7 when the insertion hole HL is formed.

[0039] However, when the insertion part has a hole lid part and a cut part, when the contents are ejected from the lid, there is a high possibility that the contents will also leak from the part of the cut part from which gas is likely to leak. The part of the cut part on the tip side of the hole lid part is likely to be displaced due to the influence of external stress, so the gap of the cut part is likely to widen and become the part from which gas is likely to leak.

[0040] In this regard, according to the lid body 1 of the first embodiment, before the insertion hole HL is opened and formed (when looking at the state of the lid body 1 at the stage before the insertion hole HL is formed as an open state of the insertion hole HL), a portion from which gas is likely to leak, such as the portion on the tip portion 7A side of the hole cover portion 7, forms a non-penetrating portion 11, so that the blowing out of the contents from the lid body 1 can be prevented in the state of the lidded container 150.

[0041] Furthermore, when the lid is made of a paper-based material, the end face of the paper-based material that forms the main body is easily exposed at the insertion part, and moisture may penetrate from that end face into the fibers that make up the paper-based material, significantly reducing the stiffness of the lid and decreasing the strength of the insertion part. In particular, if moisture penetrates near the tip of the hole-lid that forms the insertion part, sagging occurs near the tip of the hole-lid (the stiffness of the paper-based material is particularly weakened near the tip of the hole-lid), and the gap near the tip of the hole-lid may expand, making it more difficult for the contents to blow out from the lid.

[0042] In this respect, according to the lid body 1 of the first embodiment, when the insertion hole HL is formed, the non-penetrating portion 11 that is broken forms a fracture surface 12 on a part of the outer peripheral edge 70 of the hole cover portion 7. At this time, at least a part of the fracture surface 12 is located at the tip portion 7A of the hole cover portion 7. Since the non-penetrating portion 11 is formed so as to form such a state, the non-penetrating portion 11 is formed in a part that is near the tip portion 7A of the hole cover portion 7 before the insertion hole HL is opened and formed. Therefore, according to the lid body 1 of the first embodiment, even when the lid body 1 is formed of a paper-based material, the stiffness of the paper-based material is not easily weakened near the tip portion 7A of the hole cover portion 7, and the possibility of the contents blowing out from the lid body 1 near the tip portion 7A of the hole cover portion 7 can be suppressed.

[0043] Next, a modification of the first embodiment will be described.

[0044] [1-3 Modifications] (Variation 1) In the case where the insertion portion 6 is formed in the main body 2 in the lid body 1 according to the first embodiment, the layout of the weakened portion 8 forming the insertion portion 6 is not limited to the example shown in Fig. 1A, and may be a layout as shown in Fig. 4A to 4G (Modification 1). Fig. 4A to Fig. 4G are diagrams for explaining one example of the lid body 1 according to Modification 1 of the first embodiment.

[0045] (Layout of weakened parts) The layout of the weakened portion 8 may be determined depending on various conditions such as the function and design of the weakened portion 8. In the example of the weakened portion 8 shown in the examples of Figures 4A and 4B, the non-penetrating portion 11 is formed in one place, and a total of three cut portions 10 are formed in Figure 4A, and a total of six cut portions 10 are formed in Figure 4B. In the examples of Figures 4A and 4B, the cut portions 10 are formed so as to extend radially in different directions from the non-penetrating portion 11.

[0046] 4C and 4D, the weakened portion 8 is formed in a C-shape (a shape resembling the letter C) with a plurality of cut portions 10 and non-penetrating portions 11. As shown in the example of FIG. 4C, the non-penetrating portion 11 may be formed in one place, or as shown in FIG. 4D, the non-penetrating portion 11 may be formed in a plurality of places.

[0047] In the examples shown in Fig. 4E and Fig. 4F, the weakened portion 8 is formed into an N-shape (a shape imitating the letter N) and a W-shape (a shape imitating the letter W) with a plurality of cut portions 10 and non-penetrating portions 11, respectively. In these examples, the non-penetrating portions 11 are formed at or near the position where the extending directions of the two cut portions 10, which have different longitudinal directions from each other, intersect. In both the examples of Fig. 4E and Fig. 4F, the non-penetrating portions 11 are formed in a plurality of places.

[0048] In the example shown in Fig. 4G, the weakened portion 8 is formed into a sideways U-shape (a shape resembling the letter U laid on its side) in which the portion corresponding to the tip portion 7A is formed linearly with the multiple cut portions 10 and the non-penetrating portion 11. In the example of Fig. 4G, the portion corresponding to the tip portion 7A is formed as a whole of the non-penetrating portion 11, and the non-penetrating portion 11 is a half-cut portion 16.

[0049] (Variation 2) In the cover 1 according to the first embodiment, when the weakened portion 8 has a plurality of non-penetrating portions 11, all of the non-penetrating portions 11 may be broken by external stress being applied to the insertion portion 6 along the thickness direction of the main body 2 when the insertion hole HL is formed, but at least one of the non-penetrating portions 11 may be broken. For example, in the weakened portion 8 as shown in FIG. 4D, three non-penetrating portions 11 are provided, but if the non-penetrating portion 11 located on the tip portion 7A side of the hole cover portion 7 is broken when the insertion hole HL is formed, one or both of the two non-penetrating portions 11 located closer to the hinge corresponding portion 9 of the hole cover portion 7 than the non-penetrating portion 11 may not be broken. Even in this case, a part of the hole cover portion 7 (the part on the tip portion 7A side of the hole cover portion 7) is pushed in, and the insertion hole HL can be opened and formed to a certain size.

[0050] (Variation 3) In the lid 1 according to the first embodiment, as shown in Fig. 4H, when the two different cut portions 10 are the first cut portion 10A and the second cut portion 10B, at least one pair of the first cut portion 10A and the second cut portion 10B may be arranged such that a non-penetrating portion 11 is formed between the end portion 21 of the first cut portion 10A and the peripheral portion 20 of the second cut portion 10B (Modification 3). Fig. 4H is a diagram for explaining one example of the lid 1 according to Modification 3 of the first embodiment.

[0051] (Functions and Effects of Modification 3) When the insertion hole HL is formed in the lid 1, the stress applied to the insertion portion 6 causes the non-penetrating portion 11 to tear in a direction starting from the end portion 21 of the cut portion 10 and moving away from the end portion 21, forming a fracture surface 12. At this time, in the lid 1, the fracture surface 12 is often formed along the longitudinal direction of the cut portion 10, but when the main body 2 is made of a paper-based material, the fracture direction of the non-penetrating portion 11 may be an unintended direction depending on the orientation of the fibers contained in the paper-based material forming the main body 2, and this may cause the hole cover portion 7 to have an unintended shape. In this regard, according to variant example 3 of the first embodiment, a non-penetrating portion 11 is formed between end 21 of first cut portion 10A and peripheral portion 20 of second cut portion 10B. Therefore, when non-penetrating portion 11 is torn starting from end 21 of first cut portion 10A in a direction away from end 21, even if the fracture direction of non-penetrating portion 11 deviates slightly from the intended direction, fracture surface 12 formed by the fracture of non-penetrating portion 11 merges with peripheral portion 20 of second cut portion 10B, thereby preventing the hole cover portion 7 from becoming shaped in an unintended manner.

[0052] (Variation 4) In the lid 1 according to the first embodiment, a raised portion 17 may be formed on the main body 2 as shown in Figs. 5A and 5B (Modification 4). Figs. 5A and 5B are a plan view and a cross-sectional view, respectively, for explaining one example of the lid 1 according to Modification 4 of the first embodiment. The raised portion 17 is a raised portion on the exposed surface 72 side. Note that in Figs. 5A and 5B, a portion of the opposing surface 73 corresponding to the raised portion 17 is a recessed portion. In this case, it is preferable that an insertion portion is formed within the formation region of the raised portion 17 in a plan view of the main body 2 (when the thickness direction of the main body 2 is the line of sight).

[0053] [2 Second embodiment] [2-1 Configuration] As shown in Figs. 6A and 6B, the lid 1 according to the second embodiment has a main body 2, and an insertion portion 6 is formed in the main body 2. Fig. 6A is a plan view showing an example of the lid 1 according to the second embodiment. Fig. 6B is a cross-sectional view showing a state of the longitudinal section of line EE in Fig. 6A. In the lid 1 according to the second embodiment, the definitions and configurations of the joint area corresponding portion 5A, the lid area corresponding portion 5B, and the outer area corresponding portion 5C of the main body 2, and the material of the main body 2 are the same as those in the first embodiment, so the description will be omitted. In addition, the insertion portion 6 has a hole cover portion 7 and a weakened portion 8. The insertion portion 6 is formed in the same manner as in the first embodiment, except that the hole cover portion 7 has a corner portion 13 and that at least a part of the fracture surface 12 has a position corresponding to the corner portion 13. In the second embodiment, the description of the same configuration as in the first embodiment will be omitted.

[0054] (hole cover) In the lid body 1 according to the second embodiment, the hole lid portion 7 of the insertion portion 6 has a corner 13 in a plan view of the hole lid portion 7. When the insertion portion 6 has a plurality of hole lid portions 7, the corners 13 may be formed for all of the hole lid portions 7, or the corners 13 may be formed for some of the hole lid portions 7. In the example of Fig. 6A, two hole lid portions 7 are formed, but this is just one example.

[0055] (Corner) The corner 13 is an angular portion formed in the hole lid portion 7 and corresponds to the convex contour portion of the hole lid portion 7. In the example of FIG. 6A, the hole lid portion 7 is formed in a rectangular shape with the weakened portion 8 and the portion corresponding to the hinge corresponding portion 9 as the four sides, and the portion corresponding to the corner position of the rectangle formed by the weakened portion 8 is the corner 13. It is sufficient that the corner 13 is formed in a roughly angular shape. Therefore, the range of the corner 13 includes a portion formed in a pointed shape, and also includes the corner 13 even if the portion corresponding to the corner position of the rectangle formed by the weakened portion 8 is formed in a slightly rounded shape, and also includes the corner 13 even if the portion corresponding to the corner position of the rectangle formed by the weakened portion 8 is formed in a slightly flat surface shape.

[0056] (Weakening part) The weakened portion 8 has the cut portions 10 and the non-penetrating portions 11, similarly to the first embodiment. The layout of the weakened portion 8 shown in the example of FIG. 6A is different from the layout shown in FIG. 1A as an example of the first embodiment, and is formed in an H-shape, and is composed of a combination of three cut portions 10 and two non-penetrating portions 11. However, the layout of the weakened portion 8 in the lid body 1 according to the second embodiment is not limited to the example of FIG. 6A.

[0057] (Fracture surface) In the cover 1 according to the second embodiment, as in the first embodiment, an insertion hole HL is formed by applying external stress to the insertion portion 6 along the thickness direction (Z-axis direction) of the main body 2 as shown in Figures 7A and 7B. When the stress is applied, the non-penetrating portion 11 is broken, and the tip portion 7A side of the hole cover portion 7 is pushed out in the direction of the externally applied stress. The broken non-penetrating portion 11 forms a fracture surface 12 on a part of the outer circumferential edge 70 of the hole cover portion 7.

[0058] Furthermore, in the cover 1 according to the second embodiment, at least a part of the fractured surface 12 is located at a corner 13 of the hole-covering portion 7. In the example of Fig. 7A, the hole-covering portion 7 is displaced together with the fractured surface 12 as the tip 7A side of the hole-covering portion 7 is pushed out.

[0059] In the example of the lid body 1 according to the second embodiment, two parallel cuts 10 and a cut 10 having a longitudinal direction perpendicular to the longitudinal direction of the two cuts 10 are formed at a position between the two cuts 10. When the cut formed at the position between the two parallel cuts 10 is defined as a first cut and the two cuts 10 are defined as second cuts, a non-penetrating portion 11 is formed between the end of the first cut and the peripheral surface of the second cut. However, this is only an example, and does not prohibit the non-penetrating portion 11 from being formed between the end of one cut and the peripheral surface of another cut. However, as described later, when the main body 2 of the lid body 1 has a paper-based material, it is preferable that the non-penetrating portion 11 is formed between the end of one cut and the peripheral surface of the other cut (the end of the first cut and the peripheral surface of the second cut).

[0060] Modifications 1 to 4 described in the first embodiment may be applied to the second embodiment.

[0061] [2-2 Actions and Effects] In the lid body usable for the container with the lid body, as described in the first embodiment, when the insertion part has a hole lid part and a cut part, when the gas in the container is blown out from the lid body, there is a high possibility that the contents will also leak from the part of the cut part where the gas is likely to leak out. If a corner is formed in the hole lid part of the cut part, the corner part of the hole lid part is likely to be displaced due to the influence of external stress, so that the gap of the cut part is likely to widen near the corner, and it is likely to become a part where the gas is likely to leak out. According to the lid body 1 of the second embodiment, the part where the gas is likely to leak out, such as the corner part of the hole lid part, forms a non-penetrating part, so that the blowing out of the contents from the lid body can be suppressed in the state of the container with the lid body.

[0062] According to the lid body 1 of the second embodiment, a non-penetrating portion 11 is formed in the portion that becomes the corner 13 of the hole lid portion 7, so that even when the lid body 1 is formed from a paper-based material, the stiffness is less likely to weaken near the corner 13 of the hole lid portion 7, which also makes it possible to prevent the contents from spraying out of the lid body 1 near the corner 13 of the hole lid portion 7.

[0063] [2-3 Modifications] (Variation 1) In the case where the insertion portion 6 is formed in the main body 2 in the lid body 1 according to the second embodiment, the layout of the weakened portion 8 forming the insertion portion 6 is not limited to the example shown in Fig. 6A, and may be a layout as shown in Fig. 8A to 8E (Modification 1). Fig. 8A to Fig. 8E are diagrams for explaining one example of the lid body 1 according to Modification 1 of the second embodiment.

[0064] (Layout of weakened parts) The layout of the weakened portion 8 may be determined depending on various conditions such as the function and design of the weakened portion 8. In the example of the weakened portion 8 shown in the examples of Fig. 8A to Fig. 8E, the non-penetrating portion 11 is formed in two places, and a total of three cut portions 10 are formed. In the example shown in Fig. 8A to Fig. 8E, the weakened portion 8 is formed in a sideways U-shape (a shape imitating the letter U turned sideways) in which the part corresponding to the tip portion 7A is formed linearly by the multiple cut portions 10 and the non-penetrating portion 11. However, in Fig. 8D, the shape is somewhat close to a horseshoe shape.

[0065] In the cover 1 according to the first modification of the first embodiment shown in Figures 8A to 8D, when two different cut portions 10 are respectively the first cut portion 10A and the second cut portion 10B, at least one pair of the first cut portion 10A and the second cut portion 10B is arranged such that a non-penetrating portion 11 is formed between the end portion 21 of the first cut portion 10A and the peripheral portion 20 of the second cut portion 10B. In this case, the same actions and effects as those shown in the action and effects of the third modification of the first embodiment can be obtained.

[0066] In addition, in the cover body 1 according to variant example 1 of the second embodiment, as shown in FIG. 8E, the non-penetrating portion 11 may be formed so as to avoid being formed between the peripheral portion 20 of one cut portion 10 and another end portion 21.

[0067] [3 Third embodiment] [3-1 Example 1] As shown in Figures 9A and 9B, the cover 1 according to the third embodiment has a main body 50 and a side wall 31. This example is referred to as a first example of the third embodiment. Figures 9A and 9B are diagrams showing an example of the first example of the cover 1 according to the third embodiment.

[0068] (Main body) 9A and 9B, the main body 50 has a top surface portion 32 and an outer peripheral portion 33. In the example of Fig. 9A and 9B, the main body 50 may be made of the same material as the main body 2 described in the first and second embodiments, and therefore the description thereof will be omitted.

[0069] (Top part) The top surface portion 32 corresponds to a portion that covers the opening 102 when the lid body 1 is attached to the container 101, and is configured to include an insertion portion 6 similar to the lid area corresponding portion 5B of the main body 2 in the first and second embodiments, and therefore may be configured similarly to the lid area corresponding portion 5B of the main body 2 in the first and second embodiments. For this reason, in the description of the third embodiment, the description of the insertion portion 6 is omitted. Note that in the example of Figures 9A and 9B, an example in which the insertion portion 6 is configured similarly to the insertion portion 6 shown in Figure 1A is described as an example. This also applies to Figures 10A, 10B, 11A, and 11B.

[0070] (Outer periphery) The outer peripheral portion 33 is configured as a portion extending away from the outer peripheral edge 32A of the top surface portion 32, which is the base end 33A. In the example of Fig. 9B, the outer peripheral portion 33 is a portion (rising portion 34) that rises from the outer peripheral edge 32A of the top surface portion 32 in a direction (upward) from the opposing surface 73 toward the exposed surface 72 side or diagonally upward. The rising portion 34 is formed so as to be slightly tapered (tapering shape) from its upper end (tip 33B) toward its lower end (base end 33A).

[0071] (side wall) The side wall 31 is disposed in the lid 1 so as to surround the outer periphery of the top surface portion 32. In the example of Figs. 9A and 9B, the side wall 31 is provided so as to surround the outer surface 35 of the outer periphery portion 33. At least a part of the side wall 31 faces the outer surface 35. In the case of Figs. 9A and 9B, the part of the side wall 31 facing the outer surface 35 of the outer periphery portion 33 (the outer surface of the rising portion 34) is the upper side wall 37, and the part below the upper side wall 37 is the lower side wall 38. The lower side wall 38 extends below the top surface portion 32, and at least a part of this extending part serves as a part for engaging the lid 1 with the container 101 when the lid 1 is attached to the container 101.

[0072] It is preferable that the side wall 31 is provided with a folded portion 39 that has an upper end 37A of the upper side wall 37 as a base end, covers the upper end (tip 33B) of the outer periphery 33, and extends to the inner surface 36 of the outer periphery 33. In the example of FIGS. 9A and 9B, the folded portion 39 is provided so as to surround the inner surface 36 of the outer periphery 33.

[0073] The side wall 31 is formed to be slightly tapered (tapered) from its upper end (tip) (upper end 37A of the upper side wall) to its lower end (base end) (lower end 38A of the lower side wall) in the same manner as the rising portion 34. Since the lower side wall 38 is formed to be tapered downward, the lid body 1 can be firmly locked to the container 101 when the lid body 1 is attached to the container 101.

[0074] (locking structure forming part) The locking structure forming portion 40 is a portion that forms a structure for locking the lid 1 to the container 101 when the lid 1 is attached to the container 101. In the example of Figs. 9A and 9B, the locking structure forming portion 40 has a lower side wall 38. The locking structure forming portion 40 may further have a portion (upper portion 41) that extends from the outer periphery 32A of the top surface portion 32 to a portion slightly inside the outer periphery 32A. The upper portion 41 can be specified as a portion that can come into contact with the edge portion 103 of the container 101 when the lid 1 is attached to the container 101.

[0075] [3-2 Example 2] The cover 1 according to the third embodiment may have a main body and a side wall as shown in Fig. 10A and Fig. 10B. This example is called the second example of the third embodiment. Fig. 10A and Fig. 10B are diagrams showing an example of the first example of the cover 1 according to the third embodiment.

[0076] (Top part) The main body 50 has a top surface portion 32 and an outer peripheral portion 33. The top surface portion 32 is similar to that in the first example of the second embodiment, and therefore a description thereof will be omitted.

[0077] (Outer periphery) As in the first example of the second embodiment, the outer peripheral portion 33 is configured as a portion extending away from the outer peripheral edge 32A of the top surface portion 32 as the base end 33A. However, in the example of Fig. 10A and Fig. 10B, the outer peripheral portion 33 is a portion (hanging portion 42) that hangs down from the outer peripheral edge 32A of the top surface portion 32 in a direction (downward) from the exposed surface 72 toward the opposing surface 73 side or diagonally downward. The hanging portion 42 is formed to be slightly tapered (tapered) from its upper end (base end) (base end 33A of the outer peripheral portion 33) toward its lower end (tip end) (tip end 33B of the outer peripheral portion 33).

[0078] (side wall) The side wall 31 in the second example of the third embodiment is disposed so as to surround the outer periphery of the top surface portion 32. In the side wall 31 shown in the example of Figs. 10A and 10B, the portion of the side wall 31 facing the outer surface 35 of the outer periphery portion 33 (the outer surface of the hanging portion 42) is a lower side wall 38, and the portion above the lower side wall 38 is an upper side wall 37. The upper side wall 37 extends upward beyond the top surface portion 32.

[0079] It is preferable that the side wall 31 is provided with a folded portion 39 that has a base end at the lower end 38A of the lower side wall 38, covers the lower end of the outer periphery portion 33, and extends to the inner surface 36 of the outer periphery portion 33. In the example of Figs. 9A and 9B, the folded portion 39 is provided so as to surround the inner surface 36 of the outer periphery portion 33. In addition, the tip of the folded portion 39 may be in a state of non-contact with the opposing surface 73 of the top surface portion 32, or may be in a state of contact with the opposing surface 73 of the top surface portion 32.

[0080] Similar to the hanging portion 42, the side wall 31 is formed to be slightly tapered from its upper end (upper end 37A of the upper side wall 37) to its lower end (tip) (lower end 38A of the lower side wall 38). In addition, when the folded portion 39 is formed as in the example of Fig. 10B, it is preferable that the folded portion 39 is also formed to be tapered downward.

[0081] 10B, a curled portion (side wall curled portion 45) may be formed by winding the member forming the side wall 31 outward, or a portion (bent portion) may be formed by bending in the outward direction. At the upper end 37A of the upper side wall 37, the end face of the member forming the side wall 31 may be exposed.

[0082] (locking structure forming part) In the second example, the locking structure forming part 40 has a laminated structure of the lower side wall 38 and the outer periphery 33 (the hanging part 42 in FIG. 10). In the example of FIG. 10A, the locking structure forming part 40 further has a folded part 39, and has a laminated structure of the folded part 39, the outer periphery 33, and the lower side wall 38. Note that the locking structure forming part 40 may further have a part (upper part 41) from the outer periphery 32A of the top surface part 32 to a part slightly inside the outer periphery 32A, as shown in the first example. According to the locking structure forming part 40 shown in the example of FIG. 10A, the laminated structure of the folded part 39, the outer periphery 33 (the hanging part 42 in FIG. 10), and the lower side wall 38 is tapered downward, so that when the lid body 1 is attached to the container 101, the lid body 1 can be firmly locked to the container 101.

[0083] Modifications 1 to 4 described in the first embodiment may be applied to the first and second examples of the third embodiment.

[0084] [4 Application Examples] (Application example 1) The lid 1 described above can be used for a container with a lid 150 as shown in Fig. 3A and Fig. 3B. Fig. 3A is a perspective view showing an example in which the lid 1 according to the first embodiment is attached to an edge portion 103 forming the outer periphery of an opening 102 of a container 101 having an opening 102 formed at the upper end. In this example, the lid 1 is joined to the edge portion 103. Fig. 3B is a cross-sectional view that typically shows the state of the vertical cross section taken along line CC in Fig. 3A. The container with a lid 150 will be described further with reference to Figs. 3A and 3B.

[0085] (Container with lid) The container with lid 150 has a joint 151 where the container 101 and the lid 1 are joined, and the area of ​​the lid 1 where the joint 151 is formed is the joint area R. The method of joining the lid 1 and the container 101 is not particularly limited, and any suitable joining method such as a crimping method or a heat fusion method (heat seal) can be used. In the following, an example will be described in which the lid 1 according to the first embodiment is used for the container with lid 150.

[0086] The container 101 has a container body 110 having a cylindrical side wall 104 and a bottom 107 whose diameter increases toward the top (tapering toward the bottom), forming a space 105 inside, and an opening 102 that opens at the upper end of the container body 110 (the upper end of the side wall 104). Although not shown, the opening 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 opening 102 of the container 101 may be formed in a rectangular shape. The container 101 may be any one as long as the opening 102 can be covered with the lid 1. In addition, the object stored inside the container 101 (space 105) is not particularly limited, and examples include liquid objects, solid objects, and combinations thereof.

[0087] 3A and the like, the edge 103 of the opening 102 has a flange portion. The flange portion may be a curled portion 108 formed by outwardly winding a member forming the container body 110, or may be formed as a portion (a flange portion) extending outwardly on a plane.

[0088] The lid 1 may also be combined with a container 101 having an opening 102 .

[0089] (Application example 2) The lid 1 may be used for a container 150 with a lid as shown in Fig. 11A and Fig. 11B. Fig. 11A is a diagram showing an example in which the lid 1 according to the first example of the third embodiment is attached to an edge portion 103 forming the outer periphery of an opening 102 of a container 101 having an opening 102 formed at an upper end. In this example, an example in which the lid 1 is engaged with the edge portion 103 is shown. Fig. 11B is a cross-sectional view showing a schematic state of the vertical cross section taken along line II in Fig. 11A.

[0090] The lid 1 according to the third embodiment may be combined with a container 101 having an opening 102.

[0091] 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.

[0092] Based on the above description of this specification, the present invention may adopt the configurations shown in the following [E1] to [E14]. [E1] A body formed so as to be able to contact a container having an opening and an edge portion forming an outer periphery of the opening, The main body has an insertion portion configured to be able to form an insertion hole, The insertion portion has a hole cover portion that covers the insertion hole and a weakened portion that forms at least a part of an outer periphery of the hole cover portion, The weakened portion includes a plurality of cut portions penetrating the main body in a thickness direction of the main body and a non-penetrating portion that avoids penetrating the main body, the insertion hole is formed by applying stress to the insertion portion from the outside along a thickness direction of the main body, When the insertion hole is formed, the non-penetrating portion is broken, the broken non-penetrating portion forms a fracture surface on a part of the outer peripheral edge of the hole cover portion, the hole cover portion is displaced together with the fracture surface, and at least a part of the fracture surface is located at the tip of the hole cover portion. Lid body. [E2] A body formed so as to be in contact with a container having an opening and an edge portion forming an outer periphery of the opening, The main body has an insertion portion configured to be able to form an insertion hole, The insertion portion has a hole cover portion that covers the insertion hole and a weakened portion that forms at least a part of an outer periphery of the hole cover portion, The hole cover portion has a corner portion that forms a convex outline portion in a plan view of the main body, The weakened portion includes a plurality of cut portions penetrating the main body in a thickness direction of the main body and a non-penetrating portion that avoids penetrating the main body, the insertion hole is formed by applying stress to the insertion portion from the outside along a thickness direction of the main body, When the insertion hole is formed, the non-penetrating portion is broken, the broken non-penetrating portion forms a fracture surface on a part of the outer peripheral edge of the hole cover portion, the hole cover portion is displaced together with the fracture surface, and at least a part of the fracture surface is located at the corner portion of the hole cover portion. Lid body. [E3] When the non-penetrating portion is broken, a plurality of the fracture surfaces are formed, and at least a part of at least one of the fracture surfaces is located at the tip portion of the hole cover portion. The lid body described in [E1] above. [E4] The weakened portion has a plurality of the non-penetrating portions, At least one of the non-penetrating portions is broken by applying an external stress to the insertion portion along a thickness direction of the main body. A lid body described in any one of [E1] to [E3] above. [E5] The insertion portion has a plurality of the hole cover portions, When the insertion hole is formed, The fracture surface is formed on a part of the outer circumferential edge of each of the hole cover portions. A lid body described in any one of [E1] to [E4] above. [E6] The non-penetrating portion has a half-cut structure in which the main body is cut to a predetermined depth in the thickness direction of the main body, A lid body described in any one of [E1] to [E5] above. [E7] The weakened portion has a structure in which at least three of the cut portions are formed around the non-penetrating portion. A lid body described in any one of [E1] to [E6] above. [E8] A protuberance is formed. The insert portion is formed within the region where the raised portion is formed. A lid body described in any one of [E1] to [E7] above. [E9] The main body is formed of a paper-based material, A lid body described in any one of [E1] to [E8] above. [E10] A joint area corresponding to an area to be joined to the container along the edge of the container, and a lid area corresponding to a portion on the inside from the joint area corresponding to the lid area, The insertion portion is formed in the lid region corresponding portion. A lid body described in any one of [E1] to [E9] above. [E11] A side wall is provided around the outer periphery of the main body, The sidewall is configured to be able to engage with the container along the edge of the container. A lid body described in any one of [E1] to [E9] above. [E12] The cut portion has a peripheral surface portion and an end portion, When the two different cut portions are respectively a first cut portion and a second cut portion, at least one pair of the first cut portion and the second cut portion is arranged such that the non-penetrating portion is formed between the end portion of the first cut portion and the peripheral portion of the second cut portion. A lid body according to any one of the above [E1] to [E11]. [E13] A lid body according to any one of [E1] to [E12] above; the container having the opening and the edge forming a periphery of the opening; The lid is joined to the container. Container with lid. [E14] A lid body according to any one of [E1] to [E12] above; the container having the opening and the edge forming a periphery of the opening; A combination of a lid and a container. [Explanation of symbols]

[0093] 1: Lid 2: Main unit 5A: Joint area 5B: Lid area corresponding part 5C: Outer region corresponding part 6: Insertion section 7: Hole cover 7A:Tip 8: Weakened part 9: Hinge corresponding part 10: Notch 10A: First notch 10B: Second notch 11: Non-penetrating section 12: Fractured surface 13: Corner 16: Half cut section 17: Protuberance 20: Peripheral part 21: End 31: Side wall 32:Top section 32A: Outer edge 33: Outer periphery 33A: Proximal end 33B:Tip 34: Rising part 35:Outer surface 36: Inner surface 37: Upper side wall 37A: Upper end 38: Lower side wall 38A: Bottom end 39: Folded section 40: Locking structure forming part 41: Upper part 42:Drooping part 45: Side wall curl section 50: Main unit 70: Outer edge 72: Exposed surface 73: Opposite surface 101: Container 102: Opening 103: Edge 104: Side wall 105: Spatial part 107: Bottom 108: Curl section 110: Container body 150: Container with lid 151: Joint CT: center HL: Insertion hole R: Junction area

Claims

1. a body formed to be capable of contacting a container having an opening and an edge portion that defines an outer periphery of the opening; The main body has an insertion portion configured to be able to form an insertion hole, The insertion portion has a hole cover portion that covers the insertion hole and a weakened portion that forms at least a part of an outer periphery of the hole cover portion, The weakened portion includes a plurality of cut portions penetrating the main body in a thickness direction of the main body and a non-penetrating portion that avoids penetrating the main body, the insertion hole is formed by applying stress to the insertion portion from the outside along a thickness direction of the main body, When the insertion hole is formed, the non-penetrating portion is broken, the broken non-penetrating portion forms a fracture surface on a part of the outer peripheral edge of the hole cover portion, the hole cover portion is displaced together with the fracture surface, and at least a part of the fracture surface is located at the tip of the hole cover portion. Lid body.

2. a body formed to be capable of contacting a container having an opening and an edge portion that defines an outer periphery of the opening; The main body has an insertion portion configured to be able to form an insertion hole, The insertion portion has a hole cover portion that covers the insertion hole and a weakened portion that forms at least a part of an outer periphery of the hole cover portion, The hole cover portion has a corner portion that forms a convex outline portion in a plan view of the main body, The weakened portion includes a plurality of cut portions penetrating the main body in a thickness direction of the main body and a non-penetrating portion that avoids penetrating the main body, the insertion hole is formed by applying stress to the insertion portion from the outside along a thickness direction of the main body, When the insertion hole is formed, the non-penetrating portion is broken, the broken non-penetrating portion forms a fracture surface on a part of the outer peripheral edge of the hole cover portion, the hole cover portion is displaced together with the fracture surface, and at least a part of the fracture surface is located at the corner portion of the hole cover portion. Lid body.

3. When the non-penetrating portion is broken, a plurality of the fracture surfaces are formed, and at least a portion of at least one of the fracture surfaces is located at the tip portion of the hole cover portion. The lid according to claim 1 .

4. The weakened portion has a plurality of the non-penetrating portions, At least one of the non-penetrating portions is broken by applying an external stress to the insertion portion along a thickness direction of the main body. The lid according to claim 1 or 2.

5. The insertion portion has a plurality of the hole cover portions, When the insertion hole is formed, The fracture surface is formed on a part of the outer circumferential edge of each of the hole cover portions. The lid according to claim 1 or 2.

6. The non-penetrating portion has a half-cut structure in which the main body is cut to a predetermined depth in the thickness direction of the main body. The lid according to claim 1 or 2.

7. The weakened portion has a structure in which at least three of the cut portions are formed around the non-penetrating portion. The lid according to claim 1 or 2.

8. A protuberance is formed, The insert portion is formed within the region where the raised portion is formed. The lid according to claim 1 or 2.

9. The main body is formed of a paper-based material. The lid according to claim 1 or 2.

10. a joint area corresponding to an area to be joined to the container along the edge of the container; A lid region corresponding portion configured from the joint region corresponding portion on the inner side, The insertion portion is formed in the lid region corresponding portion. The lid according to claim 1 or 2.

11. A side wall is provided around the periphery of the body, The sidewall is configured to be able to engage with the container along the edge of the container. The lid according to claim 1 or 2.

12. The cut portion has a peripheral surface portion and an end portion, When the two different cut portions are respectively referred to as a first cut portion and a second cut portion, at least one pair of the first cut portion and the second cut portion is arranged such that the non-penetrating portion is formed between the end portion of the first cut portion and the peripheral surface portion of the second cut portion. The lid according to claim 1 or 2.

13. A lid body according to claim 1 or 2, the container having the opening and the edge forming a periphery of the opening; The lid is joined to the container. Container with lid.

14. A lid body according to claim 1 or 2, the container having the opening and the edge forming a periphery of the opening; A combination of a lid and a container.

Images