Lid material and container using same

Abstract

To provide a cover material capable of reducing an environment load.SOLUTION: A cover material fitted with a bottomed cylindrical container body has a first resin sheet, and a base sheet portion that is partially fixed to the first resin sheet and made from paper. The base sheet portion has an annular outer frame portion fixed to the first resin sheet, and an inner plate portion that is arranged inside the annular outer frame portion and separably held by at least one of the first resin sheet and the outer frame portion. The annular outer frame portion is equipped with a plurality of projecting portions projecting inward from an inner peripheral portion. The projecting portions can be separated from the first resin sheet.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a lid and a container in which the lid is fitted onto a container body. [Background technology]

[0002] A conventional container for yogurt etc. is disclosed in Patent Document 1. This container comprises a container body, an inner lid and an outer lid. The container body is made of paper with polyethylene on the inner side of the paper, and is formed into a cylindrical shape with a bottom and a flange around the mouth. The inner lid is made of laminated paper with polyethylene on the inner side of the paper, and is thermally bonded to the flange. The outer lid is made of a resin molded product, and fits onto the flange of the container body.

[0003] The contents can be removed by removing the outer lid and peeling the inner lid off the flange, and the container with the remaining contents can be stored by closing the outer lid. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Jitsuzen No. 140384, 1982 (pages 3-10, Figure 9) Summary of the Invention [Problem to be solved by the invention]

[0005] However, the above-mentioned conventional containers have an outer lid made of a resin molded product, which poses a problem of a large environmental load.

[0006] An object of the present invention is to provide a lid material that can reduce the environmental impact and a container using the same. [Means for solving the problem]

[0007] In order to achieve the above object, the lid material according to the present invention is fitted onto a bottomed cylindrical container body. The lid material has a first resin sheet and a paper mount part, a part of which is fixed to the first resin sheet. The mount part has an annular outer frame part fixed to the first resin sheet, and an inner plate part disposed inside the annular outer frame part and separably held by at least one of the first resin sheet and the outer frame part. The annular outer frame part has a plurality of protrusions protruding inward from an inner periphery, and the protrusions are separable from the first resin sheet.

[0008] In addition, in the covering material of the present invention having the above-mentioned configuration, a break line is arranged between the outer frame portion and the inner plate portion, which penetrates the backing portion and has a connection portion that does not penetrate in part, connecting the outer frame portion and the inner plate portion, and the inner plate portion can be separated from the outer frame portion by breaking the break line.

[0009] Further, in the lid material of the present invention having the above-mentioned structure, the inner plate portion is held by a release agent layer disposed between the inner plate portion and the first resin sheet.

[0010] Moreover, in the lid member having the above-mentioned structure according to the present invention, the protruding portion is not bonded to the first resin sheet.

[0011] Moreover, in the lid material of the present invention having the above-mentioned structure, the convex portion is held by a release agent layer disposed between the lid material and the first resin sheet.

[0012] Further, in the lid member of the present invention having the above-mentioned structure, the plurality of protruding portions include a pair of protruding portions disposed opposite each other.

[0013] The present invention also provides a container having a lid having the above-described configuration, the lid having a bottomed cylindrical container body to which the lid is fitted, and a second resin sheet sealed to a flange portion extending outward from an opening at the top of the container body. The surface of the inner plate portion opposite to the resin film is held or fixed to the second resin sheet, and a portion of each of the protrusions overlaps vertically with the flange portion at the same time. Effect of the Invention

[0014] According to the present invention, it is possible to provide a lid material that can reduce the environmental load and a container using the same. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a plan view of an example of a container having a lid material according to the present invention. [Diagram 2] 2 is a cross-sectional view taken along line II-II of the container shown in FIG. 1. [Diagram 3] FIG. [Figure 4] 4 is an enlarged cross-sectional view of the lid and flange of the container. FIG. [Diagram 5] FIG. 2 is an enlarged cross-sectional view of the container with the lid removed. [Figure 6] FIG. 4 is an enlarged cross-sectional view of the container when the second resin sheet is opened. [Figure 7] FIG. 11 is an enlarged cross-sectional view of the lid when resealing. [Figure 8] FIG. 2 is an enlarged cross-sectional view of the resealed container. [Figure 9] FIG. 4 is an enlarged cross-sectional view showing a container of a first modified example. [Figure 10] FIG. 11 is an enlarged cross-sectional view showing a container of a second modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] A container 100 having a lid material 20 according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of an example of a container 100 having a lid material 20 according to the present invention. FIG. 2 is a cross-sectional view of the container 100 shown in FIG. 1 taken along line II-II. FIG. 3 is an exploded perspective view of the container 100. In FIGS. 1 and 3, the adhesive layer 418 between the first resin sheet 30 and the adhesive parts 415, 416 of the outer frame part 41 of the mount part 40 is shown by cross-hatching. In addition, in FIGS. 1 and 3, the holding part 44 that holds the inner plate part 42 to the second resin sheet 50 is shown by dot hatching. In this specification, the direction of gravity is described as downward, and the opposite direction is described as upward.

[0017] <Container 100> As shown in Fig. 1, the container 100 has a container body 10 and a lid member 20. A content S (see Fig. 2, etc.) is contained inside the container 100. Here, the content S is assumed to be food (e.g., gel-like such as yogurt, jelly, jam, etc.), but is not limited to this. For example, the content S may be powdered food such as salt, sugar, spices, or solid food such as processed meat. Furthermore, the content S may contain non-food contents S, such as lubricants such as grease, hair styling products, fragrances, wet wipes, etc.

[0018] <Container body 10> The container body 10 has a bottomed cylindrical shape capable of accommodating the contents S in the internal storage space 10S. In the container 100 of this embodiment, the container body 10 may have, for example, a paper base material and an internal coating layer having water resistance, gas barrier properties, etc. Examples of the water-resistant coating layer include a resin layer made of polyethylene (PE), polyethylene terephthalate (PET), etc. Examples of the gas-barrier coating layer include an aluminum layer.

[0019] The container body 10 may be formed of a thermoplastic resin such as polypropylene (PP) or polystyrene (PS). The container body 10 is not limited to these resins, and a wide variety of resins that are easy to mold can be used. When the container 100 is used to store 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.

[0020] As shown in Figs. 1 and 2, the container body 10 has a bottom 11, a side wall 12, and a flange 13. The side wall 12 is tubular and extends vertically. The lower portion of the side wall 12 is closed by the bottom 11. That is, the container body 10 is tubular with a bottom. An opening 14 is formed at the upper end of the side wall 12 for inserting and removing the contents S contained inside the storage space 10S. The opening 14 faces the bottom 11 vertically. As shown in Fig. 2, the opening 14 is larger than the bottom 11, but is not limited to this.

[0021] The side wall 12 is formed by bending a single plate-like member into a ring shape and gluing both ends together. The side wall 12 extends vertically, and the bottom 11 is fixed at a position shifted upward from the lower end (see FIG. 2). This configuration can increase the rigidity of the bottom 11. If the container body 10 is an integrally molded resin body, the bottom 11 may be connected to the lower end of the side wall 12. The flange 13 extends outward from the upper end of the side wall 12. In other words, the flange 13 is disposed outside the opening 14.

[0022] In the container body 10, the outer shape of the bottom 11, the outer and inner shapes of the side wall 12 (the outer shape of the opening 14), and the outer shape of the flange 13 are all substantially rectangular (here, a substantially rectangular shape is assumed, but a substantially elliptical shape may also be used) having curved corners and two adjacent straight line portions in a plan view, and are substantially similar to each other. However, they are not limited to this and may be circular or substantially regular polygonal.

[0023] <Lid material 20> The lid material 20 will be described with reference to the drawings. Fig. 4 is an enlarged cross-sectional view of the lid material 20 and the flange portion 13 of the container 100. The lid material 20 is placed on the upper part of the container body 10 and is fitted over the container body 10. As shown in Figs. 3 and 4, the lid material 20 has a first resin sheet 30 and a backing portion 40.

[0024] For example, fine paper, craft paper, imitation paper, coated paper, etc. are used as the mount part 40. The basis weight of the mount part 40 is, for example, 100 g / m 2 ~500g / m 2 The mount portion 40 has greater rigidity than the first resin sheet 30, and the provision of the mount portion 40 makes it possible to arrange the containers 100 in a stacked manner.

[0025] The mount portion 40 has an outer frame portion 41 and an inner plate portion 42. A printed layer (not shown) may be provided on the upper surfaces of the outer frame portion 41 and the inner plate portion 42. The printed layer forms information about the contents S contained within the storage space 10S of the container body 10, a product image, and the like. Note that if printing is not required, the printed layer may be omitted.

[0026] The outer frame portion 41 has a generally rectangular ring shape with curved corners in a plan view. That is, the outer frame portion 41 has a pair of long sides 411 and a pair of short sides 412 that face each other.

[0027] The mount portion 40 is disposed on the outer side of the flange portion 13 in a plan view. As shown in Fig. 1 and Fig. 3, the outer frame portion 41 has a pair of protrusions 413 protruding inward from inner circumferential surfaces of a pair of long side portions 411 of the inner circumferential portion 410, and a pair of protrusions 414 protruding inward from inner circumferential surfaces of a pair of short side portions 412.

[0028] The convex portions 413 and 414 have a curved shape that bulges inward in a plan view. As shown in Fig. 1 and Fig. 3, the curved shape of the convex portions 413 and 414 is a circular arc. However, the curved shape is not limited to this, and may be, for example, an elliptical arc shape, a trapezoidal shape, a triangular shape, or the like.

[0029] Both ends of the curved portions of the convex portions 413 and 414 are disposed outside the inner periphery of the outer frame portion 41. That is, the convex portions 413 and 414 are formed from the middle portion in the width direction of the outer frame portion 41 in a plan view. By configuring in this manner, when the outer frame portion 41 is curved, the ends of the convex portions 413 and 414 can be moved outward compared to when they protrude only from the inner periphery. Note that, when the outer frame portion 41 is curved, if the convex portions 413 and 414 can be sufficiently widened, both ends of the convex portions 413 and 414 may be formed continuously with the inner periphery 410.

[0030] Small arc portions having a radius smaller than the radius of the curved portions are connected to both ends of the curved portions of the protrusions 413 and 414. With this configuration, the length of the connection portions of the protrusions 413 and 414 with the outer frame portion 41 can be shortened, making it possible to make the outer frame portion 41 easier to deform.

[0031] The first resin sheet 30 may be, for example, a polyethylene (PE) resin film, a polyethylene terephthalate (PET) resin film, or a laminate thereof. In a plan view, the outer shape of the first resin sheet 30 is the same as the outer frame shape of the outer frame portion 41. The first resin sheet 30 overlaps the outer frame portion 41 vertically. An adhesive portion 415 is disposed outside the convex portions 413 of a pair of long side portions 411 on the upper surface of the outer frame portion 41. Similarly, an adhesive portion 416 is disposed outside the convex portions 414 of a pair of short side portions 412 on the upper surface of the outer frame portion 41.

[0032] The adhesive portions 415 and 416 are adhered to the first resin sheet 30 via an adhesive layer 418 (see FIG. 4, etc.). By adhering the adhesive portions 415 and 416 to the first resin sheet 30, the outer frame portion 41 is fixed to the lower surface of the first resin sheet 30.

[0033] In the outer frame portion 41, the portions other than the adhesive portion 415 and the adhesive portion 416 are not adhered, and become an unadhesive region 417. The convex portion 413 and the convex portion 414 are formed in the unadhesive region 417. That is, the convex portion 413 and the convex portion 414 are not adhered to the first resin sheet 30. For example, when the adhesive portion 415 of the outer frame portion 41 is bent upward, the first resin sheet 30 is bent together with the adhesive portion 415. On the other hand, the convex portion 413 formed in the unadhesive region 417 is separated from the first resin sheet 30 and moved so as to be flush with the adhesive portion 415. When the adhesive portion 416 is bent, the convex portion 414 also moves in the same manner.

[0034] 1 and 3, in the lid material 20, the adhesive portion 415 and the adhesive portion 416 are discontinuous. With this configuration, the long side portion 411 and the short side portion 412 of the outer frame portion 41 to which the first resin sheet 30 is adhered can be bent independently. When the long side portion 411 and the short side portion 412 of the outer frame portion 41 can be bent by an amount required for resealing, which will be described later, the adhesive portion 415 and the adhesive portion 416 may be connected.

[0035] The outer peripheral shape of the inner plate portion 42 is substantially the same as the inner peripheral shape of the outer frame portion 41. Therefore, the inner plate portion 42 can be housed inside the outer frame portion 41.

[0036] A break line 43 penetrating in the thickness direction is disposed between the outer frame portion 41 and the inner plate portion 42 of the mount portion 40. By forming the break line 43 in the mount portion 40, the outer frame portion 41 and the inner plate portion 42 are formed.

[0037] The break line 43 has a connection portion 431. The connection portion 431 is a portion where the outer frame portion 41 and the inner plate portion 42 are connected. In other words, the connection portion 431 is a discontinuous portion of the break line 43, and is a so-called blade stop portion. Note that the connection portion 431 is shown as a solid dot in FIG. 1, but in reality, it is a portion where the outer frame portion 41 and the inner plate portion 42 are connected, and is not limited to a dot shape. The outer frame portion 41 and the inner plate portion 42 are connected by the connection portion 431. Then, by cutting the connection portion 431 in the mount portion 40, the inner plate portion 42 is separated from the outer frame portion 41 along the break line 43.

[0038] The connecting parts 431 are of a size that allows them to be easily cut without using a tool such as a blade when separating the inner plate part 42 from the outer frame part 41 at the break line 43. In the lid member 20, the connecting parts 431 are provided at each corner of the inner plate part 42. However, this is not limited thereto, and the number is not limited to four as long as the outer frame part 41 and the inner plate part 42 can be connected to each other. In order to stably support the inner plate part 42 with the outer frame part 41, it is preferable that at least two connecting parts 431 are provided, and the connecting parts 431 are preferably provided at positions that are unlikely to interfere with the protrusions 413, 414.

[0039] In the lid material 20, the outer frame portion 41 is fixed to the first resin sheet 30 by an adhesive layer 418. The inner plate portion 42 is disposed inside the outer frame portion 41, and is connected to and held by the outer frame portion 41 via a connecting portion 431.

[0040] In the lid material 20 of this embodiment, the inner plate portion 42 is not bonded to the first resin sheet 30. Therefore, in the lid material 20, by breaking the connection portion 431, the inner plate portion 42 is separated from the outer frame portion 41 and the first resin sheet 30.

[0041] In this embodiment, the inner plate portion 42 of the backing portion 40 is approximately overlapped with the break line 43 in a plan view. Therefore, the inner plate portion 42 can close the inner opening of the outer frame portion 41. However, this is not limited to this. The inner plate portion 42 has a size and shape that fits inside the opening of the outer frame portion 41, and a configuration that can be connected to the outer frame portion 41 at the connection portion 431 can be widely adopted. In addition, by making the inner plate portion 42 approximately the same size as the inner opening of the outer frame portion 41, the rigidity of the lid material 20 can be increased, and the container 100 sealed with the lid material 20 can be placed in a stacked manner. In other words, it is preferable that the inner plate portion 42 is approximately the same size as the inner opening of the outer frame portion 41. The lid material 20 has the configuration shown above.

[0042] As shown in Figures 2 and 3, the container 100 has a second resin sheet 50 that covers the upper end of the container body 10 and is sealed to the flange portion 13 to seal the storage space 10S of the container body 10. The second resin sheet 50 is, for example, a laminate having a PE resin or PE resin film as a sealant layer and a PET resin film or ONY film as a base layer, and a wide variety of resins and resin films or laminates thereof having functions necessary for sealing, such as sealing properties, water resistance, and gas barrier properties, can be used. The second resin sheet 50 is sealed to the flange portion 13 by, for example, heat sealing, but a sealing method other than heat sealing may also be used.

[0043] 2, in the container 100, the second resin sheet 50 is heat-sealed and sealed while the contents S are stored in the storage space 10S of the container body 10. Then, the lower surface of the inner plate portion 42 of the backing portion 40 of the lid material 20 is held on the upper surface of the second resin sheet 50 via the holding portion 44. In this way, the lid material 20 is held by the second resin sheet 50.

[0044] The holding portion 44 may be, for example, but is not limited to, a hot melt. A wide variety of holding methods can be used, which can lift the lid material 20 and separate only the outer frame portion 41 from the second resin sheet 50. The strength of the holding portion 44 to hold the inner plate portion 42 may be such that when the outer frame portion 41 of the lid material 20 is separated from the second resin sheet 50, the inner plate portion 42 does not peel off from the second resin sheet 50.

[0045] The operations of opening and resealing the container 100 will now be described with reference to the drawings. Fig. 5 is an enlarged cross-sectional view of the container 100 with the lid member 20 removed. Fig. 6 is an enlarged cross-sectional view of the container 100 when the second resin sheet 50 is being opened. Fig. 7 is an enlarged cross-sectional view of the lid member 20 when resealing is performed. Fig. 8 is an enlarged cross-sectional view of the resealed container 100.

[0046] 4 to 8 show a cross section of the short side portion 412 of the backing portion 40 of the lid material 20, but the long side portion 411 also has a similar configuration. In the following description, the act of attaching the lid material 20 so as to close again the opening 14 of the container body 10 that has been opened once by peeling the second resin sheet 50 from the flange portion 13 is referred to as resealing.

[0047] 4, in the container 100, the second resin sheet 50 is sealed to the upper surface of the flange portion 13 of the container body 10, thereby sealing the opening 14 of the container body 10. By sealing the second resin sheet 50 to the flange portion 13 in this manner, the storage space 10S of the container body 10 is hermetically sealed.

[0048] This prevents moisture, dust, dirt, and other foreign matter from entering the storage space 10S, making it possible to maintain a sanitary state when sealed. It also prevents air, water vapor, and other gases from leaking out of the storage space 10S. This prevents the contents S from drying out, and also prevents odors from leaking out or transferring to the contents S.

[0049] In the container 100, the inner plate portion 42 is held to the second resin sheet 50 by a retaining portion 44 (see Figure 1, etc.) arranged on the upper surface of the second resin sheet 50 sealed to the flange portion 13, thereby holding the lid material 20 to the container body 10.

[0050] 5, the outer frame portion 41 to which the first resin sheet is adhered is separated from the lid material 20, and removed from on the second resin sheet 50. At this time, the holding portion 44 and the inner plate portion 42 remain on the second resin sheet 50.

[0051] Then, as shown in Fig. 6, the second resin sheet 50 is separated from the container body 10. In the container 100 of this embodiment, a curved portion having a smaller radius than the other corners is formed as a gripping portion 51 at one of the corners of the second resin sheet 50 (see Figs. 1 and 3). By pinching the gripping portion 51 and lifting it upward, the second resin sheet 50 is separated (peeled) from the flange portion 13 of the container body 10, and the container body 10 is opened.

[0052] By opening the container body 10, the contents S stored inside the storage space 10S of the container body 10 can be taken out from the opening 14. The second resin sheet 50 is completely removed from the flange portion 13 of the container body 10. If the second resin sheet 50 can be easily peeled off, the gripping portion 51 may be omitted. After the second resin sheet 50 is peeled off from the flange portion 13, the inner plate portion 42 and the second resin sheet 50 are no longer necessary.

[0053] Depending on the contents S, the remaining contents may be stored in the storage space 10S. In such a case, the container body 10 is resealed with the outer frame portion 41 of the lid member 20 to close the opening 14.

[0054] The resealing of the container body 10 with the lid 20 will be described below with reference to the drawings. In the lid 20, the convex portions 413 and 414 overlap the flange portion 13 vertically. Therefore, the long side portion 411 and the short side portion 412 of the lid 20 are bent so that the outer side faces up. The inner edge of the outer frame portion 41 is an unbonded region 417, and when the outer frame portion 41 is bent, the adhesive portions 415 and 416 maintain a state in which the first resin sheet 30 is bonded, and the unbonded region 417 separates from the first resin sheet 30.

[0055] As a result, the convex portions 413 and 414 of the lid member 20 move downward away from the first resin sheet 30, and the inner ends of the convex portions 413 and 414 are positioned outside the flange portion 13 (see FIG. 7). The lid member 20 with the outwardly bent in this manner is placed over the top of the container body 10. In this manner, the convex portions 413 and 414 can be moved downward from the outside of the flange portion 13.

[0056] In a bent state, the outer frame portion 41 is brought close to the upper portion of the container body 10, whereby the first resin sheet 30 comes into contact with the upper surface of the flange portion 13. By returning the bent outer frame portion 41 to its original state while maintaining the state in which the first resin sheet 30 is in contact with the flange portion 13, the inner ends of the convex portions 413 and 414 of the outer frame portion 41 wrap around below the flange portion 13 (see FIG. 8). In this manner, the container body 10 that has been opened can be resealed with the lid member 20.

[0057] During resealing, the pair of protrusions 413 engage with the long sides of the flange portion 13, and the pair of protrusions 414 engage with the short sides of the flange portion 13. This makes it difficult for the lid material 20 to slip off. However, this is not limited to this. It is sufficient to have at least a pair of protrusions 413 or a pair of protrusions 414 arranged opposite each other. In this way, it is possible to prevent the lid material 20 from detaching from the container body 10 during resealing due to vibration or the like.

[0058] When resealing, the first resin sheet 30 contacts the upper surface of the flange portion 13, and the convex portions 413 and 414 of the outer frame portion 41 contact the lower surface of the flange portion 13. At this time, the unbonded regions 417 of the outer frame portion 41 and the first resin sheet 30 are separated. Therefore, in the lid material 20, a restoring force is generated in the outer frame portion 41 that tries to return to the original state in which the unbonded regions 417 and the first resin sheet 30 are in contact. This restoring force presses the first resin sheet 30 against the upper surface of the flange portion 13. This allows the lid material 20 to reseal the upper portion of the container body 10 reliably.

[0059] Furthermore, in the container 100 resealed with the lid 20, the first resin sheet 30 is in contact with the flange portion 13. Because the opening 14 is closed by the lid 20, it is possible to prevent foreign matter such as water (liquid), dust, and dirt from entering the storage space 10S of the container body 10. This makes it possible to store the contents S while preventing foreign matter from entering even after opening.

[0060] Furthermore, after the container body 10 has been resealed with the lid material 20, the lid material 20 can be opened again by bending the long side portions 411 and short side portions 412 of the outer frame portion 41 and moving the inner ends of the convex portions 413 and 414 to the outside of the flange portion 13 (see FIG. 7). In other words, the use of the lid material 20 makes it possible to open and reseal the container body 10 multiple times.

[0061] In addition, when opening the container 100 of this embodiment, the lid material 20 is separated from the second resin sheet 50, and then the second resin sheet 50 is peeled off and the inner plate portion 42 is separated from the lid material 20, but this is not limited thereto. For example, when the lid material 20 is separated from the container body 10, the inner plate portion 42 may be pulled by the holding portion 44 and separated from the first resin sheet 30. In this case, after the lid material 20 is separated from the container body 10, the inner plate portion 42 may be separated from the second resin sheet 50, and then the second resin sheet 50 may be peeled off from the flange portion 13, or the second resin sheet 50 with the inner plate portion 42 held therein may be peeled off from the flange portion 13 as it is. When the inner plate portion 42 is left on the second resin sheet 50, the connecting portion 431 may be omitted.

[0062] Furthermore, because the lid material 20 is resealable, the amount of resin to be disposed of can be reduced compared to a configuration having a separate outer lid made of resin, thereby reducing the environmental burden.

[0063] <First Modification> Fig. 9 is an enlarged cross-sectional view showing a container 100A of a first modified example. The container 100A shown in Fig. 9 differs from the container 100 shown in Fig. 4 and the like in that the lid member 20A has a release agent layer 451 between the unbonded region 417 and the inner plate portion 42 and the first resin sheet 30. Other than this, the container 100A has substantially the same structure as the container 100. Therefore, the same parts of the container 100A as those of the container 100 are denoted by the same reference numerals, and detailed description of the same parts will be omitted.

[0064] 9, in the cover material 20A, the unbonded region 417 and the inner plate portion 42 are held to the first resin sheet 30 by a release agent layer 451 made of a release agent. In this manner, the inner plate portion 42 is held to the outer frame portion 41 and the first resin sheet 30 and is therefore unlikely to fall off.

[0065] In addition, since both the unbonded region 417 and the inner plate portion 42 are held by the release agent layer 451 on the first resin sheet 30, gaps are unlikely to form between the unbonded region 417 and the printed layer on the upper surface of the inner plate portion 42 and the first resin sheet 30. This makes it easier for a user to view the printing (text information, images, etc.) formed on the upper surface of the lid member 20 of the container 100.

[0066] <Second Modification> Fig. 10 is an enlarged cross-sectional view showing a container 100B of a second modified example. The container 100B shown in Fig. 10 differs from the container 100 shown in Fig. 4 and the like in that the inner plate portion 42 of the lid member 20B is fixed to the second resin sheet 50 via a fixing portion 452. In other respects, the container 100B has substantially the same structure as the container 100. Therefore, the same reference numerals are used to designate the same parts of the container 100B as those of the container 100, and detailed descriptions of the same parts will be omitted.

[0067] 10, in the lid material 20B, the inner plate portion 42 and the second resin sheet 50 are fixed by fixing portions 452. In this manner, the lid material 20B is less likely to come off the second resin sheet 50. Note that, for example, an adhesive can be used as the fixing portion 452, but the present invention is not limited thereto, and any fixing method that can firmly fix the lid material 20B to the second resin sheet 50 can be widely used.

[0068] The present invention is not limited to the above-described configuration, and various modifications are possible. Configurations obtained by appropriately combining the technical means disclosed in different configurations are also included in the technical scope of the present invention. [Industrial Applicability]

[0069] INDUSTRIAL APPLICABILITY According to the present invention, a container can be used to store food or the like as contents and has a lid that can be opened and closed multiple times. [Explanation of symbols]

[0070] 100 containers S Contents 10 Container body 10S Storage Space 11 Bottom 12 Side wall 13 Flange 14 Aperture 20 Lid material 30 First resin sheet 40 Mounting section 41 Outer frame 410 Inner circumference 411 Long side 412 Short side 413 Convex 414 Convex 415 Adhesive part 416 Adhesive part 417 Unbonded area 418 Adhesive layer 42 Inner plate part 43 Break Line 431 Connection 44 Holding part 50 Second resin sheet 51 Gripping part 100A container 20A Lid material 451 Release agent layer 100B container 20B Lid material 452 Fixed part

Claims

1. A lid material configured to be peelably sealed to a bottomed cylindrical container body and to be fitted onto the container body when the container body is resealed after peeling, A first resin sheet; A paper mount portion, a portion of which is fixed to the first resin sheet, The mount portion is an annular outer frame portion fixed to the first resin sheet; an inner plate portion disposed inside the annular outer frame portion and separably held by at least one of the first resin sheet and the outer frame portion; The annular outer frame portion has a plurality of protrusions protruding inward from an inner periphery thereof, The protrusion is a lid member that is separable from the first resin sheet.

2. A break line is disposed between the outer frame portion and the inner plate portion, the break line penetrating the mount portion and having a connection portion that does not penetrate the mount portion and connects the outer frame portion and the inner plate portion, The lid according to claim 1 , wherein the inner plate portion is separable from the outer frame portion by breaking the break line.

3. The lid according to claim 1 or 2, wherein the inner plate portion is held by a release agent layer disposed between the inner plate portion and the first resin sheet.

4. The lid according to claim 1 , wherein the protrusions are not bonded to the first resin sheet.

5. The covering material according to claim 1 , wherein the protrusions are held by a release agent layer disposed between the protrusions and the first resin sheet.

6. The lid member according to claim 1 , wherein the plurality of protrusions include a pair of protrusions arranged opposite each other.

7. A lid material according to any one of claims 1 to 6, The container body has a bottomed cylindrical shape; a second resin sheet that is sealed to a flange portion that extends outward from the upper opening of the container body; a surface of the inner plate portion opposite to the first resin sheet is held by the second resin sheet, A container characterized in that, when the container body is resealed with the lid, a portion of each of the multiple protrusions simultaneously overlaps with the flange portion vertically.

8. A lid material according to any one of claims 1 to 6, The container body has a bottomed cylindrical shape; a second resin sheet that is sealed to a flange portion that extends outward from the upper opening of the container body; a surface of the inner plate portion opposite to the first resin sheet is fixed to the second resin sheet, A container characterized in that, when the container body is resealed with the lid, a portion of each of the multiple protrusions simultaneously overlaps with the flange portion vertically.

Images