Cover material and container using the same

Abstract

To provide a lid material that can reduce environmental loads.SOLUTION: A lid material, which is formed by folding back a blank paper made of paper and is fitted to a cylindrical container main body with a bottom, comprises: a top plate part that covers an opening formed at an upper end of the container main body; a tabular fixed part that is connected to a portion of an end part of the top plate part to be fixed to an outer surface of the container main body; and a tabular engagement part connected to an end part different from the portion fixed with the fixed part at the end part of the top plate part. A slit extending along a portion adjacent to the top plate part of the engagement part is formed at the portion adjacent thereto.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a lid material and a container having the lid material fitted to a container body.

Background Art

[0002] Conventional containers such as yogurt are disclosed in Patent Document 1. This container includes a container body, an inner lid, and an outer lid. The container body is formed in a bottomed cylindrical shape with a flange provided around the mouth portion by a sheet of paper having polyethylene disposed on the inner surface side thereof. The inner lid is formed of a resin such as polyethylene or polyethylene terephthalate and is thermally adhered to the flange. The outer lid is formed of a resin molded product and is fitted to the flange of the container body.

[0003] By removing the outer lid and peeling the inner lid from the flange, the contents can be taken out. Also, the outer lid can be closed to store the container with the contents remaining.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the case of the above conventional container, since the outer lid is formed of a resin molded product, there is a problem that the environmental load increases.

[0006] An object of the present invention is to provide a container capable of reducing the environmental load.

Means for Solving the Problems

[0007] In order to achieve the above object, the lid material according to the present invention is formed by bending a paper blank plate and is fitted into a bottomed cylindrical container body. The lid material has a top plate portion that covers an opening formed at the upper end of the container body, a plate-shaped fixing portion that is connected to a part of an end portion of the top plate portion and is fixed to the outer surface of the container body, and a plate-shaped engaging portion that is connected to an end portion of the top plate portion different from the fixing portion. A slit extending along the adjacent portion is formed in an adjacent portion of the engaging portion with the top plate portion.

[0008] According to this configuration, a lid for resealing can be made of a paper lid material. Therefore, by omitting the outer lid which is a resin molded product, the environmental load can be reduced.

[0009] Further, in the present invention, in the lid material having the above configuration, at least one of the engaging portions is connected to an end portion on the opposite side with the fixing portion and the top plate portion interposed therebetween.

[0010] Further, in the present invention, in the lid material having the above configuration, in plan view, the top plate portion is rectangular, the fixing portion is connected to one side of the top plate portion, and the top plate portion has three engaging portions each connected to the remaining sides of the top plate portion.

[0011] Further, the present invention is a container having the lid material having the above configuration, and includes a bottomed cylindrical container body into which the lid material is fitted, and a resin sheet sealed to a flange portion that extends outward from an opening at the upper part of the container body. The fixing portion is bent at a connection portion with the top plate portion and fixed to the outer surface of the container body, and the engaging portion is bent at a connection portion with the top plate portion and locks the slit to the lower surface of the flange portion so that the lid material is held by the container body.

Effects of the Invention

[0012] According to the present invention, a container capable of reducing the environmental load can be provided.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Embodiments for Carrying Out the Invention

[0014] A container 100 provided with a lid material 20 according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view seen from the upper rear of an example of a container 100 having a lid material 20 according to the present invention. FIG. 2 is a perspective view seen from the lower front of the container 100. FIG. 3 is an exploded perspective view of the container 100. In this specification, the gravitational direction will be described as downward, and the opposite direction as upward. Also, the side where the fixing portion 22 described later is fixed to the container body 10 will be described as the rear, and the opposite side as the front.

[0015] <Container 100> As shown in FIGS. 1 to 3, the container 100 has a container body 10 and a lid member 20. Inside the container 100, contents (not shown) are accommodated. Here, foods such as gels (e.g., yogurt, jelly, jam, etc.) are assumed as the contents, but it is not limited thereto. For example, powdery foods such as salt, sugar, and spices, or solid foods such as processed meat may be used as the contents. Further, lubricants such as grease, hair styling products, fragrances, wet wipes, etc., which are non-food contents, may be accommodated.

[0016] <Container body 10> The container body 10 has a bottomed cylindrical shape capable of accommodating the contents in the internal accommodation space 10S. In the container 100 of the present embodiment, as the container body 10, for example, a configuration having a paper base material and a coating layer having water resistance, gas barrier properties, etc. inside can be cited. Examples of the coating layer having water resistance include resin layers made of polyethylene (PE), polyethylene terephthalate (PET), etc. Further, examples of the coating layer having gas barrier properties include an aluminum layer.

[0017] Note that the container body 10 may be formed of a thermoplastic resin such as polypropylene (PP) or polystyrene (PS). Further, the container body 10 is not limited to these resins, and resins that are easy to mold can be widely adopted. Further, when the container 100 is used for accommodating food, at least the inner surface of the container body 10 is made of a material that is non-toxic or substantially non-toxic to the human body.

[0018] As shown in FIGS. 1 to 3, the container body 10 has a bottom portion 11, a side wall portion 12, and a flange portion 13. The side wall portion 12 is a cylindrical shape extending vertically. The side wall portion 12 is formed by bending a single plate-shaped member into a ring shape and bonding both ends. The container body 10 has a bottomed cylindrical shape, and the lower part of the side wall portion 12 is blocked by the bottom portion 11. The bottom portion 11 is fixed at a position shifted upward from the lower end portion of the side wall portion 12 (see FIG. 2). By configuring in this way, the rigidity of the bottom portion 11 can be increased. Note that when the container body 10 is an integrally molded resin body, the bottom portion 11 may be connected to the lower end portion of the side wall portion 12.

[0019] And an opening 14 for taking in and out the contents accommodated inside the accommodation space 10S (see FIG. 3 etc.) is formed at the upper end of the side wall portion 12. The opening 14 faces the bottom portion 11 vertically. As shown in FIG. 3, the opening 14 is larger than the bottom portion 11, but is not limited thereto. The flange portion 13 extends outward from the upper end of the side wall portion 12. That is, the flange portion 13 is disposed outside the opening 14.

[0020] The container body 10 is rectangular in plan view. In the container body 10, the outer shape of the bottom portion 11, the outer shape and the inner shape (the outer shape of the opening 14) of the side wall portion 12, and the outer shape of the flange portion 13 are all substantially rectangular having a curved corner portion and two straight portions adjacent thereto in plan view, and are substantially similar shapes to each other. Each of the above-described shapes is substantially rectangular. However, it is not limited thereto, and may be substantially elliptical, circular, substantially regular polygonal, or the like.

[0021] <Cover member 20> The cover member 20 will be described with reference to the drawings. FIG. 4 is a view showing a blank plate 200 obtained by developing the cover member 20. FIG. 5 is a perspective view seen from below of the cover member 20 formed by bending the blank plate 200. In FIG. 4, the flange portion 13 of the container body 10 is shown by a broken line. Hereinafter, based on the state shown in FIG. 4, the horizontal direction will be taken as the longitudinal direction and the vertical direction will be taken as the short side direction for description. Also, in FIG. 4, the fold lines L1 to L4 are indicated by a one-dot chain line, and the cutting lines Ct1 and Ct2 are indicated by a two-dot chain line.

[0022] As shown in FIGS. 1 to 3 etc., the cover member 20 is disposed on the upper portion of the container body 10. The cover member 20 is formed by forming the cutting lines Ct1 and Ct2 in a part of the blank plate 200 and bending it along the fold lines L1 to L4. As the fold line, for example, a shape that protrudes from one surface of the blank plate 200 and is recessed from the other surface can be cited, but it is not limited thereto.

[0023] As the blank board 200, for example, high-quality paper, kraft paper, imitation paper, coated paper, etc. are used. The basis weight of the blank board 200 is, for example, 100 g / m 2 ~500 g / m 2 can be cited. The blank board 200 is more rigid than the resin sheet 30 described later. Therefore, the container 100 can be arranged on the upper part of the lid member 20. That is, the containers 100 can be arranged in a stacked manner.

[0024] As shown in FIGS. 4 and 5, the lid member 20 has a top plate portion 21, a fixing portion 22, a first engaging portion 23, and a second engaging portion 24. The top plate portion 21 has a rectangular shape with curved corners in plan view. The top plate portion 21 has a pair of long side portions 21a, 21b and a pair of short side portions 21c, 21d. Note that the shape of the top plate portion 21 is a shape that overlaps with the flange portion 13 of the container body 10.

[0025] As shown in FIG. 4, the folding line L1 of the blank board 200 is arranged to overlap with the long side portion 21a of the top plate portion 21. The fixing portion 22 is connected to the top plate portion 21 via the folding line L1. The folding line L2 is arranged at both longitudinal ends of the long side portion 21b of the top plate portion 21. Also, a cutting line Ct1 is formed at the central portion in the longitudinal direction of the long side portion 21b. As shown in FIG. 4, the folding line L2 is connected to both longitudinal ends of the cutting line Ct1. The second engaging portion 24 is connected to the long side portion 21b of the top plate portion 21 via the folding line L2.

[0026] The folding line L3 is arranged at both lateral ends of each of the pair of short side portions 21c, 21d of the top plate portion 21. Also, a cutting line Ct2 is formed at the central portion in the lateral direction of the short side portions 21c, 21d. As shown in FIG. 4, the folding line L3 is connected to both lateral ends of the cutting line Ct2. The first engaging portion 23 is connected to each of the pair of short side portions 21c, 21d of the top plate portion 21 via the folding line L3. That is, the lid member 20 has two first engaging portions 23. The first engaging portions 23 are arranged side by side in the longitudinal direction of the lid member 20. Note that the first engaging portion 23 and the second engaging portion 24 are engaging portions.

[0027] The fixing part 22 has an adhesion part 221 and a movable part 222. The fixing part 22 has a folding line L4 extending in the longitudinal direction in the middle part in the short side direction. In the fixing part 22, the adhesion part 221 and the movable part 222 are connected in series via the folding line L4. The side of the movable part 222 opposite to the part connected to the adhesion part 221 is connected in series with the long side part 21a of the top plate part 21 via the folding line L1. The fixing part 22 can be bent along the folding line L4.

[0028] Fold the blank plate 200 along the folding line L1. Thereby, the fixing part 22 is vertically provided from the long side part 21a of the top plate part 21. At this time, the fixing part 22 is bent so as to be substantially perpendicular to the top plate part 21.

[0029] Similarly, fold the blank plate 200 along the folding line L3. Thereby, each first engaging part 23 is vertically provided from the short side parts 21c, 21d of the top plate part 21. As shown in FIG. 4, the cutting line Ct2 protrudes outward in the longitudinal direction from the folding line L3. Therefore, when the first engaging part 23 is bent along the folding line L3, a protruding part 211 protruding outward from the folding line L3 is formed on the top plate part 21. And a slit 231 extending along the adjacent part is formed in the part adjacent to the boundary between the first engaging part 23 and the top plate part 21 (see FIG. 5).

[0030] Furthermore, fold the blank plate 200 along the folding line L2. Thereby, the second engaging part 24 is vertically provided from the long side part 21b of the top plate part 21. As shown in FIG. 4, the cutting line Ct1 protrudes outward in the short side direction from the folding line L2. Therefore, when the second engaging part 24 is bent along the folding line L2, a protruding part 212 protruding outward from the folding line L2 is formed on the top plate part 21. And a slit 241 extending along the adjacent part is formed in the part adjacent to the boundary between the second engaging part 24 and the top plate part 21 (see FIG. 5).

[0031] The lid member 20 is formed by bending a flat blank plate 200 in this way. In the lid member 20, a printing layer (not shown) may be provided on the upper surface of the top plate portion 21, the outer surfaces of the fixing portion 22, the first engaging portion 23, and the second engaging portion 24. Information about the contents stored inside the storage space 10S of the container body 10, product images, etc. are formed by the printing layer. Note that when printing is not required, the printing layer may be omitted.

[0032] <Resin sheet 30> As shown in FIGS. 2, 3, etc., the container 100 has a resin sheet 30 that covers the upper end portion of the container body 10 and is sealed to the flange portion 13 to seal the storage space 10S of the container body 10. As the resin sheet 30, for example, a resin film or a laminate thereof having functions necessary for sealing such as sealability, water resistance, and gas barrier properties, such as a PE resin and a PE resin film, a PET resin film, or a laminate thereof, can be widely adopted. The sealing of the resin sheet 30 to the flange portion 13 is performed, for example, by heat sealing, but a sealing method other than heat sealing may be adopted.

[0033] In the container 100, with the contents stored in the storage space 10S of the container body 10, the resin sheet 30 is heat-sealed and sealed.

[0034] FIG. 6 is a side view of the container 100 to which the lid member 20 is attached. As shown in FIG. 6, the lid member 20 is provided on the container body 10 in a state where the resin sheet 30 is sealed to the flange portion 13. More specifically, the top plate portion 21 is disposed above the resin sheet 30 sealed to the flange portion 13 of the container body 10.

[0035] Then, the inner surface of the adhesive portion 221 of the fixing portion 22 vertically provided from the long side portion 21a is adhered to the outer surface of the side wall portion 12 of the container body 10. Thereby, the lid member 20 is attached to the container body 10. Note that, as the adhesion of the adhesive portion 221 to the side wall portion 12, for example, adhesion with an adhesive can be mentioned, but it is not limited thereto. For example, a fixing method capable of firmly fixing the lid member 20 to the side wall portion 12, such as fixing by hot melt, can be widely adopted.

[0036] In the fixing portion 22, the movable portion 222 is not adhered. And by having the movable portion 222, when the adhesive portion 221 is fixed to the side wall portion 12, adjustment can be performed by the movable portion 222, and the top plate portion 21 can be accurately arranged on the upper surface of the flange portion 13. Also, by having the movable portion 222, the opening angle of the lid member 20 can be increased.

[0037] And by bending each first engaging portion 23 so as to vertically project from the short side portions 21c, 21d of the top plate portion 21, the short side portions of the flange portion 13 are fitted into the slits 231 of each first engaging portion 23 together with the resin sheet 30. Also, by bending the second engaging portion 24 so as to vertically project from the long side portion 21b of the top plate portion 21, the long side portions of the flange portion 13 are fitted into the slits 241 of the second engaging portion 24 together with the resin sheet 30. By doing so, the lid member 20 is attached to the upper portion of the container 100. That is, the lid member 20 is held by the container body 10.

[0038] Note that the lid member 20 of the present embodiment has a second engaging portion 24 continuously provided on the long side portion 21b of the top plate portion 21 and first engaging portions 23 continuously provided on both short side portions 21c, 21d. That is, the lid member 20 has three engaging portions. However, it is not limited thereto, and it may have a second engaging portion 24 continuously provided on the long side portion 21b on the opposite side of the fixing portion 22 across the top plate portion 21. Also, the second engaging portion 24 may be omitted and it may have a pair of first engaging portions 23.

[0039] Next, the operations of opening and resealing the container 100 will be described with reference to the drawings. FIG. 7 is a side view of the container 100 with the first engaging portion 23 and the second engaging portion 24 lifted. FIG. 8 is a perspective view of the container 100 with the first engaging portion 23 and the second engaging portion 24 lifted, as viewed from below. FIG. 9 is a side view of the container 100 showing a state where the lid member 20 is opened and the resin sheet 30 is unsealed. FIG. 10 is a side view of the container 100 with the resin sheet 30 removed in a state where the lid member 20 is opened. FIG. 11 is a side view of the container 100 with the lid member 20 closed so that the top plate portion 21 contacts the flange portion 13. FIG. 12 is a side view of the container 100 with the lid member 20 resealing the container body 10.

[0040] In the following description, once the resin sheet 30 is peeled off from the flange portion 13 and the lid member 20 is used to close the opening 14 of the container body 10 again to seal it, this is referred to as resealing. When resealing with the lid member 20, the lid member 20 is locked so as not to be accidentally opened.

[0041] As shown in FIG. 6, in the container 100, the resin sheet 30 is sealed to the upper surface of the flange portion 13. The opening 14 of the container body 10 is sealed by the resin sheet 30.

[0042] Thereby, the resin sheet 30 has water resistance, gas barrier properties, etc., so that the intrusion of foreign matters such as external moisture, dust, and dirt into the accommodation space 10S is suppressed, and the sanitary state at the time of sealing is maintained. Also, the outflow of gases such as air and water vapor in the accommodation space 10S to the outside is suppressed. Thereby, the drying of the contents is suppressed, and it is possible to suppress the leakage of odor to the outside or the transfer of odor to the contents.

[0043] When opening the container 100, first, the lid member 20 is opened. To do this, both first engaging portions 23 of the lid member 20 are lifted in the horizontal direction (see FIGS. 7, 8, etc.). Thereby, the slit 231 of the first engaging portion 23 is separated from the short side portion of the flange portion 13 and the resin sheet 30. In other words, the short side portion of the flange portion 13 and the resin sheet 30 are disengaged from the slit 231.

[0044] Similarly, lift the second engaging portion 24 of the lid member 20 in the horizontal direction (see FIGS. 7, 8, etc.). As a result, the slit 241 of the second engaging portion 24 moves away from the long side portion of the flange portion 13 and the resin sheet 30. In other words, the long side portion of the flange portion 13 and the resin sheet 30 are disengaged from the slit 241.

[0045] Thereby, the lid member 20 opens with only the adhesive portion 221 of the fixing portion 22 fixed to the side wall portion 12 of the container body 10 (see FIG. 9). More specifically, by moving the top plate portion 21 of the lid member 20 in the upward direction in a state where the first engaging portion 23 and the second engaging portion 24 are lifted, the top plate portion 21 opens about the rear side. At this time, the adhesive portion 221 is fixed to the side wall portion 12, and the movable portion 222 rotates about the connection portion (broken line L4 shown in FIG. 4) with the adhesive portion 221. Further, the top plate portion 21 rotates about the connection portion (broken line L1 shown in FIG. 4) with the movable portion 222.

[0046] Since the fixing portion 22 has the movable portion 222, the lid member 20 is easily opened and the opening angle can be increased. That is, when the lid member 20 is opened, it becomes easier to access the opening 14.

[0047] Then, as shown in FIG. 9, with the lid member 20 open, peel the resin sheet 30 from the flange portion 13. In the container 100 of the present embodiment, one of the corner portions of the resin sheet 30 may have a curved grip portion (not shown) with a smaller radius than the other corner portions. By grasping the grip portion and lifting it upward, the resin sheet 30 is peeled from the flange portion 13 of the container body 10. Thereby, the container body 10 is opened (see FIG. 10).

[0048] When the container body 10 is opened, the contents accommodated inside the accommodation space 10S of the container body 10 can be taken out from the opening 14. The resin sheet 30 is completely removed from the flange portion 13 of the container body 10. The resin sheet 30 becomes unnecessary after being peeled from the flange portion 13.

[0049] Depending on the contents, the remaining removed may be stored in the storage space 10S. In such a case, the container body 10 is resealed with the lid member 20 to close the opening 14.

[0050] Next, the resealing of the container body 10 with the lid member 20 will be described. As shown in FIG. 11, with the first engaging portion 23 and the second engaging portion 24 lifted, the lid member 20 is rotated so that the top plate portion 21 contacts the upper surface of the flange portion 13.

[0051] Then, with the lower surface of the top plate portion 21 in contact with the flange portion 13, the first engaging portion 23 and the second engaging portion 24 are bent downward. As a result, the short side of the flange portion 13 fits inside the slit 231 of the first engaging portion 23. Also, the long side of the flange portion 13 fits into the slit 241 of the second engaging portion 24. In other words, the inner surface of the slit 231 of the first engaging portion 23 is locked to the lower surface of the short side of the flange portion 13, and the inner surface of the slit 241 of the second engaging portion 24 is locked to the lower surface of the long side of the flange portion 13.

[0052] That is, the adhesive portion 221 of the fixing portion 22 is fixed to one side of the side wall portion 12 of the container body 10 having a rectangular shape in plan view by adhesion. Then, the second engaging portion 24 is locked to the flange portion 13 formed on the remaining long side, and the first engaging portion 23 is locked to each of the flange portions 13 formed on each short side. In this way, the lid member 20 can close the opening 14 of the container body 10 that has been once opened. That is, the lid member 20 can reseal the container body 10.

[0053] And, by the first engaging portion 23 and the second engaging portion 24 being locked to the flange portion 13 respectively, the lid member 20 at the time of resealing is locked to the container body 10. As a result, even if an external force such as vibration or impact acts on the container 100, it is difficult for the lid member 20 to open.

[0054] In this way, by resealing the container body 10 with the lid member 20, it is possible to suppress foreign matters such as water (liquid), dust, and dirt from entering the storage space 10S of the container body 10. As a result, even after opening, it is possible to store the contents while suppressing the mixing of foreign matters.

[0055] Also, after the container body 10 is resealed by the lid material 20, the lid material 20 can open the container body 10 by the above-described procedure (see FIGS. 6 to 9). That is, the container 100 can be opened and resealed multiple times by using the lid material 20.

[0056] In addition, since the lid material 20 is resealable, the amount of resin waste can be reduced and the environmental load can be reduced for a configuration having a resin outer lid separately.

[0057] Note that the present invention is not limited to the above-described configuration, and various modifications are possible. A configuration obtained by appropriately combining technical means disclosed in different configurations is also included in the technical scope of the present invention.

Industrial Applicability

[0058] According to the present invention, it can be used as a container that houses food or the like as a content and is provided with a lid that can be opened and closed multiple times.

Explanation of Reference Numerals

[0059] 100 Container 10 Container body 10S Accommodation space 11 Bottom 12 Side wall portion 13 Flange portion 14 Opening 200 Blank plate 20 Lid material 21 Top plate portion 21a Long side portion 21b Long side portion 21c Short side portion 21d Short side portion 211 Protrusion 22 Fixed portion 221 Adhesive portion 222 Movable portion 23 First engaging portion 231 Slit 24 Second engaging portion 241 Slit 30 resin sheet Cutting line Ct1 Cutting line Ct2 Folding line L1 Folding line L2 Folding line L3 Folding line L4

Claims

【Claim 1】 A bottomed cylindrical container body, A lid member formed by bending a paper blank plate, fixed to the container body, and capable of resealing a rectangular opening at the upper end of the container body, The container body is, A side wall portion, A flange portion having a rectangular shape in plan view that extends outward from the opening and has a curved corner portion and a straight portion adjacent thereto, The lid member is, A top plate portion having a rectangular shape in plan view that can be disposed on the upper surface of the flange portion of the container body and covers the opening, A plate-shaped fixing portion connected to one long side portion of the top plate portion and fixed to the outer surface of the side wall portion of the container body, A plate-shaped engaging portion connected to the other long side portion and both short side portions of the top plate portion, The fixing portion is, An adhesive portion adhered to the outer surface of the side wall portion, A movable portion disposed between the side wall portion and the top plate portion and continuously provided with each of the side wall portion and the top plate portion via a fold line, When the engaging portion is bent from the top plate portion, a protruding portion protruding outward from the top plate portion is formed, and in the adjacent portion of the engaging portion to the top plate portion, it extends along the other long side portion and the short side portion of the top plate portion, and a slit is formed in the middle portion of the other long side portion and both short side portions of the top plate portion, When the top plate portion is disposed so as to cover the opening and the adhesive portion is adhered to the outer surface of the side wall portion, the movable portion is disposed outside the flange portion in a non-adhesive state with the container body, When the lid member reseals the opening, the engaging portion is bent at the connection portion with the top plate portion to lock the slit to the lower surface of the flange portion, so that the middle portions of the long side portions and the short side portions of the flange portion are respectively disposed in the slits provided in the corresponding engaging portions.

Images