Container and package

Abstract

To provide a container and a package capable of sufficiently maintaining the quality of a packaged article even after opening.SOLUTION: A container has a storage part and includes a paper container on which a first opening is formed, and a lid label adhered to the paper container so as to cover the first opening. When the lid label is peeled off from the paper container, the first opening part separates from the paper container together with the lid label, forming a first opening in the paper container. The package includes the container and a packed article packaged in the container.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to containers and packages. [Background technology]

[0002] Various materials are being considered as resealable containers for holding packaged items. Patent Document 1 proposes a paper container having waterproof paper, an adhesive layer, a base layer, and a metal film in this order, which constitutes a container for packaging an impregnated body impregnated with a liquid. Patent Document 2 proposes a resealable plastic container for holding sliced food. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-147692 [Patent Document 2] Japanese Patent Application Publication No. 5-193639 Summary of the Invention [Problem to be solved by the invention]

[0004] Containers made of paper, such as those in Patent Document 1, can make more effective use of resources than plastic containers, such as those in Patent Document 2. Using an adhesive lid label is effective for sealing the opening of a paper container. However, direct contact between the adhesive on the lid label and the packaged item can cause quality degradation depending on the type of packaged item. One aspect of the present disclosure provides a container and package that can adequately maintain the quality of the packaged item even after opening. [Means for solving the problem]

[0005] One aspect of the present disclosure provides a container comprising: a paper container having a storage section and a first intended opening section formed therein; and a lid label adhered to the paper container so as to cover the first intended opening section; when the lid label is peeled off from the paper container, the first intended opening section separates from the paper container together with the lid label, thereby forming a first opening in the paper container.

[0006] In the above-mentioned container, a lid label covers a first intended opening portion provided on the paper carton. When the lid label is peeled off from the paper carton, the first intended opening portion separates from the paper carton together with the lid label, forming a first opening in the paper carton. Therefore, when the lid label is peeled off to open the container, the inner surface of the lid label is covered by the part of the paper carton that formed the first intended opening portion. This prevents direct contact between the inner surface of the lid label and the packaged item in the storage compartment, making it possible to adequately maintain the quality of the packaged item.

[0007] One aspect of the present disclosure provides a package including the container and an item packaged in the container. The package includes the container, and therefore, the quality of the item can be sufficiently maintained. [Effects of the Invention]

[0008] One aspect of the present disclosure can provide a container and a package that can sufficiently maintain the quality of the packaged contents even after opening. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view of a container (packaging body) according to one embodiment. [Figure 2] 2 is a cross-sectional view of the container (packaging body) of FIG. 1 taken along line II-II. [Figure 3] 2 is a cross-sectional view showing the state when the lid label is peeled off from the container (package) of FIG. 1. FIG. [Figure 4] FIG. 2 is a cross-sectional view showing the state after the inner bag of the container (package) of FIG. 1 has been opened and part of the packaged item has been removed. [Figure 5] FIG. 2 is a diagram showing the plan view of the paper container and the cross section of the lid label. [Figure 6] FIG. 1 is a plan view of a paper template for obtaining a paper container. [Figure 7] This is a diagram of the top surface of the paper container as seen from the inside (storage section side). [Figure 8] FIG. 1A is a cross-sectional view showing an example of a laminate that constitutes a paper container, and FIG. 1B is a cross-sectional view showing another example of a laminate that constitutes a paper container. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, several embodiments will be described, with reference to the drawings as needed. However, the following embodiments are merely examples for explaining the present invention, and are not intended to limit the present invention to the following content. In the description, the same elements or elements having the same functions will be designated by the same reference numerals, and redundant explanations will be omitted where appropriate. Furthermore, unless otherwise specified, positional relationships such as up, down, left, and right will be based on the positional relationships shown in the drawings. Furthermore, the dimensional ratios of each element are not limited to those shown in the drawings.

[0011] The container 100 in FIG. 1 comprises a paper container 10 having a storage section and a first intended opening section 10C formed therein, and a lid label 30 adhered to the paper container 10 so as to cover the first intended opening section 10C provided on the top surface of the paper container 10. The paper container 10 has a box-like outer shape and may be made of, for example, waterproof paper. This allows the package containing the packaged item (contents) stored in the storage section of the container 100 to maintain sufficient durability even if condensation occurs after freezing or refrigeration. The paper container 10 only needs to contain paper (cellulose) as the main component, and may also contain components other than paper. For example, it may be a paper base material with a protective layer of resin or the like provided thereon.

[0012] The container 100 (packaging body 200) has a rectangular prism-like outer shape, but is not limited to this. For example, it may be a rectangular prism other than a rectangular prism, or may be cylindrical. The shapes and sizes of the first intended opening portion 10C and the lid label 30 are also not particularly limited. The lid label 30 is preferably adhered to the paper container 10 so as to cover the entire first intended opening portion 10C. This ensures sufficient airtightness when the container 100 is resealed.

[0013] A window 10W is provided on the side of the paper carton 10, through which the inner bag 40 inside the storage section can be seen. The window 10W may be a through-hole that passes through the paper carton 10, or the through-hole may be closed with a transparent or translucent resin film. If the inner bag 40 is made of a transparent or translucent material, it is possible to check from the outside of the paper carton 10 whether or not the packaged item stored in the storage section is present, the remaining amount, color, and whether or not there has been any change in quality. The location of the window 10W is not limited to the side of the paper carton 10, but may also be on the top surface (top surface) or bottom surface. Furthermore, there are no particular limitations on the size and number of the windows 10W.

[0014] The lid label 30 has a tab 35 at one end to make it easier to grip the lid label 30 when opening the container 100 (packaging 200). The lid label 30 has a curved portion 36 on the opposite side from the tab 35 to make it easier to maintain the connection between the lid label 30 and the paper carton 10 after opening the container 100 (packaging 200). The curved portion 36 is configured such that the outer edge of the lid label 30 is curved so that it is recessed on both sides of the other end. When opening the container 100 (packaging 200), lift the tab 35 and pull the lid label 30 diagonally upward to the left, and the lid label 30 gradually peels off from the paper carton 10. When peeled up to the curved portion 36, the resistance to peeling the lid label 30 increases as it moves from the most recessed portion to the expanded portion. At this point, the user senses the increased resistance to peeling and stops peeling the lid label 30. This makes it possible to prevent the lid label 30 and the paper container 10 from becoming separate even after the container 100 (package 200) is opened.

[0015] The cross-sectional view of Figure 2 shows a cross section parallel to the peeling direction of the lid label 30 and passing through the first intended opening portion 10C. A packaged item 44 packaged in a bag body 41 is contained within the storage section formed by the paper container 10. This makes it possible to package a variety of packaged items 44 with improved sealing performance. The type of packaged item 44 is not particularly limited. The packaged item 44 is not limited to solid items, and various examples include paste-like or gel-like items, and impregnated bodies in which a solid is impregnated with a liquid. More specific examples include foods such as miso paste and seasonings, and hygiene products such as gauze and wet tissues.

[0016] The lid label 30 comprises a laminate having a label layer 31 and an adhesive layer 32 on the side of the label layer 31 facing the paper container 10. That is, the surface of the lid label 30 facing the paper container 10 is made up of the adhesive layer 32. The adhesive layer 32 may be made from a resin component having adhesive properties. Examples of such resin components include urethane resin, epoxy resin, acrylic resin, polyvinyl resin, rubber resin, and silicone resin.

[0017] The label layer 31 may have a laminated structure including, for example, a resin film and an ink layer. Examples of the resin film include polyester films such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyolefin films such as polyethylene and polypropylene, polystyrene films, polyamide films such as 66-nylon, polycarbonate films, and engineering plastic films such as polyacrylonitrile films and polyimide films.

[0018] The label layer 31 may have, in this order from the adhesive layer 32 side, a milky white PET film, an ink layer, and a resin film. This allows the label layer 31 to have a clear display function. The label layer 31 may have, in this order from the adhesive layer 32 side, a metal film and a resin film. Such a lid label 30 has excellent decorativeness and light-blocking properties, and can therefore adequately protect the packaged item 44.

[0019] The metal film may contain aluminum, tin, indium, nickel, copper, silver, gold, platinum, brass, chromium, or zinc, or an alloy of these metals. One of these may be contained alone, or two or more may be contained in combination. The metal film can be produced, for example, by vacuum deposition, sputtering, or ion plating. By including such a metal film, the lid label 30 can be made to have excellent decorativeness.

[0020] The adhesive layer 32 has a first portion 32A that adheres to the first intended opening portion 10C and a second portion 32B that adheres to the surface of the rim portion 12 of the paper container 10 surrounding the first intended opening portion 10C. The first portion 32A is located in the center of the lid label 30, and the second portion 32B is located so as to surround the first portion 32A. The second portion 32B preferably has a weaker adhesive strength than the first portion 32A. This allows the first portion 32A and the first intended opening portion 10C to be firmly adhered, while the second portion 32B can be easily peeled off from the rim portion 12. Therefore, when the lid label 30 is peeled off from the paper container 10, the first intended opening portion 10C separates from the paper container 10 together with the lid label 30, as shown in FIG. 3, allowing the first opening 18 to be smoothly formed in the paper container 10. The first portion 32A and the second portion 32B may be provided with adhesive layers having different adhesive strengths due to differences in the components contained therein, or an adhesive layer may be provided to cover the entire one side of the label layer 31, and then the surface of the adhesive layer in the portion that will become the second portion 32B may be covered with a mask layer (adhesive-killing layer) that reduces the adhesive strength. The mask layer may be formed by applying varnish or the like to the surface of the adhesive layer.

[0021] An inner bag 40 for packaging an item 44 to be packaged is held within the storage section of the folding carton 10. The inner bag 40 has a bag body 41 formed with a through hole 41H that serves as a second opening, and a flap label 41A attached to the bag body 41 so as to cover the through hole 41H. In the inner bag 40, the through hole 41H in the bag body 41 that is covered with the flap label 41A serves as the second intended opening 40C. The through hole 41H in the bag body 41 is sealed by the flap label 41A, and the item 44 to be packaged is sealed within the inner bag 40.

[0022] The flap label 41A is composed of a laminate having a base layer and an adhesive layer, and is adhered by the adhesive layer to the peripheral edge of the bag body 41 that forms the through-hole 41H. The base layer included in the flap label 41A may be a flexible packaging material. The bag body 41 may also be composed of a flexible packaging material. Examples of flexible packaging materials in this specification include resin films such as polyethylene, polypropylene, polyester, and polyvinyl chloride; metal foils or metal-deposited films such as aluminum; paper; and composite materials thereof.

[0023] The bag body 41 may be composed of a laminate having a base layer, a sealant layer, and an adhesive layer. The base layer may be the above-mentioned resin film or a resin film on which a metal vapor deposition film is formed. The innermost layer may be a sealant layer. The laminate may have a barrier layer and / or an ink layer. Examples of barrier layers include a nylon resin layer and a resin film on which an aluminum vapor deposition film or the like is formed. Specific examples of laminates include LLDPE film / PET film, LLDPE film / nylon film / PET film, LLDPE film / co-extruded nylon film, and LLDPE film / nylon film / transparent vapor deposition PET film. The flap label 41A may have a similar laminate structure.

[0024] It is not essential that inner bag 40 has flap label 41A, and for example, inner bag 40 may be provided with a planned opening line consisting of a half-cut line, and the second opening may be formed by tearing or cutting this planned opening line. In this case, the part where the planned opening line is formed becomes second planned opening portion 40C.

[0025] As shown in Figure 4, when the flap label 41A is removed from the inner bag 40, the second opening 42 is formed. After the second opening 42 is formed, the flap label 41A removed from the inner bag may be discarded. A user can remove the packaged item 44 from the container 100 through the first opening 18 and the second opening 42. If the packaged item 44 is a food product, the packaged item 44 may be removed little by little using, for example, a spoon.

[0026] The inner bag 40 is adhered by an adhesive layer 52 to the inner surface of the rim portion 12 surrounding the first opening 18 (the rim portion 12 surrounding the first intended opening portion 10C before opening) around the periphery of the through hole 41H in the bag body 41. Because the top of the inner bag 40 (bag body 41) is suspended from the inner surface of the rim portion 12 of the paper carton 10, the packaged items 44 can be smoothly removed even after the amount of packaged items 44 stored therein has decreased. The adhesive layer 52 that adheres the rim portion 12 to the inner bag 40 is not particularly limited as long as it can adhere the inner bag 40 to the top surface of the paper carton 10. Examples of adhesives that can be used for the adhesive layer 52 include hot melt adhesives, acrylic adhesives, polyvinyl alcohol adhesives, urethane adhesives, polyester adhesives, polyether adhesives, epoxy adhesives, polyethyleneimine adhesives, and polybutadiene adhesives.

[0027] FIG. 5 shows a plan view of the folding carton 10 with the first opening 18 and the second opening 42 formed therein, and a cross-sectional view of the lid label 30 adhered to the folding carton 10, in order to explain the positional relationship of each component. The packaged item 44 is exposed through the second opening 42. The first opening 18 is slightly larger than the second opening 42 and is formed to surround the peripheral edge 48 of the second opening 42. This sufficiently prevents the packaged item 44 from adhering to the rim portion 12. The flap label 41A is also slightly larger than the second opening 42, thereby sufficiently covering the through-hole 41H that forms the second opening 42. The flap label 41A is preferably attached to the bag body 41 so as to be surrounded by the first opening 18. In other words, the flap label 41A is preferably smaller than the first opening 18. This allows the flap label 41A to be easily removed.

[0028] While the user is removing the packaged items 44 from the container 100, the paper slip PF that formed the first opening 10C remains adhered to the first portion 32A of the adhesive layer 32 of the lid label 30, as shown in FIG. 4 . After removing a predetermined amount of packaged items 44 from the container 100 through the first opening 18 and the second opening 42, the user lowers the lid label 30 toward the paper carton 10 so as to cover the first opening 18. At this time, the paper slip PF adhered to the lid label 30 provides greater rigidity than if the paper slip PF were not adhered. This facilitates smooth alignment when closing the first opening 18 with the lid label 30. The paper slip PF fits into the first opening 18, and the second portion 32B of the adhesive layer 32 of the lid label 30 adheres to the surface of the rim portion 12, thereby resealing the container 100. In this manner, the container 100 can be resealed. After resealing, even without the flap label 41A, the paper piece PF can sufficiently prevent direct contact between the packaged item 44 and the adhesive layer 32 of the lid label 30. Therefore, the container 100 (package 200) can sufficiently maintain the quality of the packaged item 44 even after opening.

[0029] The second portion 32B of the lid label 30 may be configured to be able to repeatedly adhere to and peel off from the rim portion 12. By making the adhesive strength of the second portion 32B weaker than that of the first portion 32A, damage to the rim portion 12 can be sufficiently prevented.

[0030] In FIG. 5, the position of the boundary 32C between the first portion 32A and the second portion 32B in the adhesive layer 32 coincides with the edge of the first opening 18, but this is not limited to this. In a modified example, the boundary 32C and part of the second portion 32B may be covered with a piece of paper PF. Furthermore, the second portion 32B does not have to surround the entire periphery of the first portion 32A. For example, the curved portion 36 and the portion to the left of the curved portion 36 shown in FIG. 1 may be the first portion 32A, making it difficult to peel the lid label 30 from the paper container 10. This makes it easier to maintain the connection between the paper container 10 and the lid label 30 after the container 100 is opened.

[0031] The surface of the rim portion 12 may be covered with a resin layer. The resin layer may be a resin film adhered to the surface of the paper container 10 with an adhesive, or may be a coating layer (varnish layer) formed by applying varnish or the like. The resin film may be a polyolefin film or a polyester film. Such a resin film may be provided on the surface of the rim portion 12 using an adhesive. The resin layer can prevent damage to the rim portion 12 when the lid label 30 is peeled off from the paper container 10. Furthermore, damage to the rim portion 12 can be prevented even if the container is repeatedly opened and closed by adhering and peeling the lid label 30. In this way, providing a resin layer on the surface of the rim portion 12 can improve the durability of the container 100.

[0032] FIG. 6 shows a paper template 10E for obtaining the folding carton 10. The folding carton 10 may be formed from a single sheet of paper template 10E. This allows for smooth packaging of the packaged items. The lines K1, K2, K3, and K4 are mountain-folded along the top surface 61, where the first intended opening 10C is formed, to obtain four side surfaces S1, S2, S3, and S4. At this time, the flaps F1, F2, F3, and F4 on the sides of the sides S2 and S4 are mountain-folded along the lines K6, K7, K8, and K9 and adhered to the inner surfaces of the sides S1, S3, S1, and S3, respectively. Each line may be a groove (recess), or a through-hole may be formed in the form of a perforation.

[0033] The paper is folded along line K5, which is the lower end of side S4, to form bottom 62 parallel to top 61. Flaps F5, F6, and F7 at the lower ends of sides S1, S2, and S3 are folded along line K10, K11, and K12, respectively, to adhere flaps F5, F6, and F7 to the inner surface of bottom 62. In this manner, a paper container 10 having a rectangular prism-like outer shape can be obtained. In paper template 10E as shown in Figure 6, a resin layer may be provided on rim portion 12 surrounding first intended opening portion 10C.

[0034] FIG. 7 is a view of the top surface 61 of the folding carton 10 as viewed from the inside (the container side). The adhesive layers 52 that bond the inner bag 40 to the top surface 61 (the inner surface of the rim portion 12) are provided in pairs along the direction in which the lid label 30 is peeled off. Each of the pair of adhesive layers 52 is provided between the first intended opening portion 10C (rim portion 12) and the outer edge of the top surface 61 of the folding carton 10, and extends in the direction in which the lid label 30 is peeled off. The adhesive layers 52 may be provided at any position closer to the outer edge of the top surface 61 than the rim portion 12, and their shape and number are not particularly limited. For example, in a modified example, the adhesive layer 52 may be provided so as to surround the entire periphery of the first intended opening portion 10C. This allows the inner bag 40 to be more firmly fixed to the top surface 61 of the folding carton 10. On the other hand, by providing an adhesive layer 52 only on a portion of the periphery of the first intended opening portion 10C as shown in Figure 7, the first intended opening portion 10C can be made sufficiently large, thereby making it easier to remove the packaged item 44.

[0035] On the top surface 61 of the paper carton 10, the first intended opening portion 10C is surrounded by a slit SL and three connecting portions C1, C2, and C3. When the container 100 (package 200) is sealed as shown in Figures 1 and 2, the first intended opening portion 10C is connected to the rim portion 12 around the first intended opening portion 10C by the connecting portions C1, C2, and C3. When the lid label 30 is peeled off from the top surface 61 of the paper carton 10 as shown in Figure 3, the connecting portion C1 closest to the tab portion 35 of the lid label 30 breaks, and the piece of paper PF that formed the first intended opening portion 10C is lifted up together with the lid label 30. Thereafter, as the lid label 30 continues to be peeled off, the connecting portions C2 and C3 also break, forming the first opening 18.

[0036] In the example of FIG. 7 , the number of connections (connection C1) that break immediately after peeling of the lid label 30 begins is smaller than the number of connections (connections C2, C3) that break immediately before peeling of the lid label 30 is completed. This allows the first opening 18 to be more reliably formed by lifting the first opening portion 10C (paper piece PF) together with the lid label 30 when opening the container 100. The number, position, size, and shape of the connections for securing the first opening portion 10C may be adjusted depending on the material of the paper container 10 and the adhesive strength of the adhesive layer 32 of the lid label 30. For example, in the example of FIG. 7 , no connection is provided in the slit SL portion along the longitudinal direction of the adhesive layer 52, but one or more connection portions may be provided in this portion. The slit SL and connection portions C1, C2, and C3 can be formed by making intermittent cuts in a paper template such as that shown in FIG. 6 .

[0037] The width of the connecting portions C1, C2, and C3 (width of the joint portion) may be 0.1 to 3 mm, 0.3 to 2.5 mm, or 0.5 to 2 mm. The number of connecting portions is not limited to three, and may be two, or four or more.

[0038] As shown in FIG. 8(A), the paper container 10 may be composed of a laminate 72 having a paper substrate 11 and a resin layer 16. A container 100 including a paper container 10 composed of such a laminate 72 may be used for packaging food that requires refrigeration or freezing. The surface 72A of the laminate 72 facing the paper substrate 11 may be the inner surface of the paper container 10, and the surface 72B facing the resin layer 16 may be the outer surface of the paper container 10. The paper substrate 11 may be water-resistant paper. This allows excellent durability to be maintained even when used in an environment where dew may adhere. Such a container 100 is particularly useful for packaging food that requires refrigeration or freezing.

[0039] The paper substrate 11 may have, from the surface 72A side, a paper layer 11a containing paper materials such as resin and pulp, and a pigment-containing layer 11b containing a pigment, in this order. Examples of pigments contained in the pigment-containing layer 11b include white pigments such as kaolin, clay, engineered kaolin, delaminated clay, heavy calcium carbonate, and light calcium carbonate. However, the types of pigments are not limited to these, and other pigments include various pigments such as purple pigments and blue pigments. The pigment-containing layer may contain a single pigment selected from the above, or may contain a combination of two or more pigments. The pigment-containing layer 11b may contain particulate pigments, as well as binders, fillers, fluorescent dyes, etc. that bind the pigments together. The pigment-containing layer 11b may also be a layer known as a clay layer.

[0040] The basis weight of the paper substrate 11 is, for example, 100 to 800 g / m 2 and 200 to 600 g / m 2 This makes it possible to achieve both sufficient rigidity and good assembly ease. The thickness of the paper substrate 11 may be 100 to 800 μm, or may be 200 to 600 μm.

[0041] The paper layer 11a of the paper base material 11 forming one surface 72A of the laminate 72 contains a resin, and therefore can suppress absorption of moisture from the surface 72A. For example, when the package 200 is taken out into the air after refrigerated or frozen storage, dew may form inside the container 100. In such cases, the laminate 72 can suppress moisture absorption, thereby maintaining a good appearance of the paper container 10 and improving its durability. In a modified example, the laminate 72 may have a resin coating layer made of, for example, an acrylic resin, to cover the surface of the paper layer 11a. The resin contained in the paper layer 11a and the resin constituting the resin coating layer may be the same type or different types. An example of the resin contained in the resin coating layer is a (meth)acrylic resin.

[0042] The structure of the waterproof paper is not limited to the above, and various types of waterproof paper that contain a resin component to improve water resistance can be used. Waterproof paper may be produced by a known method, or a commercially available product may be used. Examples of commercially available products include "N Mitsubishi Waterproof" manufactured by Mitsubishi Paper Mills, Ltd., and "Ecovalley V" and "Ecovalley K" manufactured by Nippon Paper Industries Co., Ltd.

[0043] It is preferable that the pigment-containing layer 11b of the paper base material 11 in the laminate 72 is in direct contact with the adhesive layer 14. By providing the paper base material 11 with the pigment-containing layer 11b, the cosmetic properties and design of the container 100 can be improved.

[0044] Examples of adhesives that can be used for adhesive layer 14 include hot melt adhesives, acrylic adhesives, polyvinyl alcohol adhesives, urethane adhesives, polyester adhesives, polyether adhesives, epoxy adhesives, polyethyleneimine adhesives, and polybutadiene adhesives.

[0045] The adhesive layer 14 formed from the cured product of such an adhesive composition has excellent adhesion to the pigment-containing layer 11b and is also highly water-resistant. The pigment-containing layer 11b is prone to absorbing moisture, and the inclusion of particulate pigments makes the surface smooth, which can easily impair adhesion to other layers. However, the adhesive layer 14 formed using an acrylic emulsion adheres sufficiently to the pigment-containing layer 11b. This prevents moisture from penetrating the interface between the pigment-containing layer 11b and the adhesive layer 14. Therefore, the excellent durability of the paper container 10 can be fully maintained even when it comes into contact with moisture.

[0046] The mass per unit area of the adhesive layer 14 is 2 to 10 g / m 2 It is preferable that the density is 4 to 10 g / m 2 This makes it possible to sufficiently increase the peel adhesive strength between the adhesive layer 14 and the paper substrate 11.

[0047] The resin layer 16 may be a resin film. Examples of resin films include polyester films such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN); polyolefin films such as polyethylene and polypropylene; polystyrene films; polyamide films such as 66-nylon; polycarbonate films; and engineering plastic films such as polyacrylonitrile films and polyimide films. The thickness of the resin layer 16 is not particularly limited and may be, for example, 3 to 50 μm or 6 to 30 μm.

[0048] As shown in Figure 8(B), the paper container 10 may be composed of a laminate 73 having a paper base material 11 and a resin layer 16A. The surface 73A of the laminate 73 facing the paper base material 11 may be the inner surface of the paper container 10, and the surface 73B facing the resin layer 16A may be the outer surface of the paper container 10. The paper base material 11 may be waterproof paper similar to the laminate 72 in Figure 8(A). The resin layer 16A may be a coating formed, for example, by applying and drying a varnish containing a resin and a solvent.

[0049] An ink layer may be provided on the surfaces 72B, 73B of the laminates 72, 73. The ink layer may be provided between the paper substrate 11 and the adhesive layer 14, or between the paper substrate 11 and the resin layer 16A. By providing an ink layer, paper containers 10 with various designs can be produced. The laminates constituting the paper containers 10 are not limited to those described above and may have a metal film containing, for example, aluminum, tin, indium, nickel, copper, silver, gold, platinum, brass, chromium, or zinc, or an alloy of these metals. The metal film can be produced by, for example, vacuum deposition, sputtering, or ion plating. This allows for the low-cost production of paper containers 10 with excellent decorativeness due to their metallic luster. The thickness of the laminates 72, 73 may be 300 to 800 μm, 350 to 600 μm, or 380 to 480 μm.

[0050] After use, the container 100 can be easily separated into the lid label 30, the paper container 10, and the inner bag 40. This allows for easy separation and collection according to material, improving recyclability. The container 100 has high durability and excellent hygiene. By using the container 100 instead of containers that have traditionally been made of plastic, resources can be used more effectively. The container 100 is useful, for example, as a container for packaging food. The storage section of the container 100 is made of the paper container 10, which allows for rigidity. This allows for sufficient suppression of deformation due to impacts during transportation, etc.

[0051] Although several embodiments have been described above, the present invention is not limited to the above embodiments. For example, the lid label 30 has a tab portion 35 and a curved portion 36, but it may not have these, or may have a different shape. The paper container 10 is not limited to one made of waterproof paper, and may have other paperboard. Examples of paperboard include coated cardboard, cardboard, kraft cardboard, uncoated cardboard, and art paper. The lid label 30 and the paper container 10 are not limited to those that are repeatedly bonded and peeled. For example, once the container 100 (package 200) is opened, the packaged item 44 may be completely consumed. The present disclosure includes the following embodiments [1] to [9].

[0052] [1] A paper container having a storage section and a first opening planned section; a lid label adhered to the paper container so as to cover the first intended opening portion, A container in which, when the lid label is peeled off from the paper container, the first intended opening portion separates from the paper container together with the lid label, forming a first opening in the paper container. [2] A bag body made of a soft packaging material is provided in the storage section, A second opening portion is formed in the bag body, The container according to [1], configured so that the second intended opening portion is exposed at the first opening. [3] The container described in [2], wherein the bag body is adhered to at least a portion of the inner surface of the rim portion of the paper container surrounding the first intended opening portion. [4] When the bag body is opened at the second opening planned portion to form the second opening, The container according to [2] or [3], wherein the second opening is smaller than the first opening, and the peripheral edge of the second opening is surrounded by the first opening. [5] The surface of the lid label facing the paper container is made of an adhesive layer having adhesive properties, the adhesive layer has a first portion that adheres to the first intended opening portion and a second portion that adheres to a rim portion that surrounds the first intended opening portion, The container according to any one of [1] to [4], wherein the second portion has a weaker adhesive strength than the first portion. [6] A container described in any one of [1] to [5], wherein even after the first opening is formed, a portion of the lid label remains adhered to the paper container, and the lid label and the paper container are connected. [7] A container according to any one of [1] to [6], wherein the surface of the rim portion surrounding the first intended opening portion of the paper container facing the lid label is made of a resin layer. [8] The container according to any one of [1] to [7], wherein the paper container is composed of a laminate having a paper base material and a resin layer, and is used for packaging food that requires refrigeration or freezing. [9] A container according to any one of [1] to [8] above, A package comprising an item packaged in the container. [Example]

[0053] The present disclosure will be described in more detail below with reference to examples and comparative examples, but the present disclosure is not limited to the following examples.

[0054] [Packaging Creation 1] Example 1 Commercially available waterproof paper ("N Mitsubishi Waterproof" manufactured by Mitsubishi Paper Mills, basis weight: 350 g / m 2) was prepared. This waterproof paper had a two-layer structure, with a paper layer containing paper materials such as resin and pulp, and a pigment-containing layer containing a pigment (clay). This waterproof paper was used to create the template shown in Figure 6. After the miso was placed in an inner bag of flexible packaging material, the template was assembled to accommodate this inner bag, forming a paper container 10 having the outer shape shown in Figure 1. A lid label (OPP film with an adhesive layer formed on it) was attached to cover the first intended opening portion 10C of this paper container 10, thereby obtaining a package 200 as shown in Figure 1.

[0055] Example 2 A package 200 was obtained in the same manner as in Example 1, except that commercially available coated cardboard (recycled paper content: 80% or more) was used as the paper template material.

[0056] Example 3 A package 200 was obtained in the same manner as in Example 1, except that commercially available card paper ("SQ Card" manufactured by Oji Paper Co., Ltd., recycled paper content: 60 to 80%) was used as the paper pattern material.

[0057] [Packaging Evaluation 1] The packages 200 produced in Examples 1 to 3 were stored in a refrigerator (for 1 day or 4 days) or in a freezer (for 1 day or 4 days), and then placed at room temperature to examine the effects of condensation. The presence or absence of discoloration due to condensation was evaluated according to the following criteria. The evaluation results are shown in Table 1. A: No condensation or discoloration of the paper container due to condensation B: Paper container discolored due to condensation

[0058] [Table 1]

[0059] Example 1, which used water-resistant paper, received an A rating in all evaluations, confirming that it is suitable for refrigerated and frozen storage. These results confirm that it is suitable to use paper containers with water-resistant paper for applications requiring refrigerated and frozen storage.

[0060] [Packaging Creation 2] Example 4 A package 200 was produced using the same procedure as in Example 1. The first intended opening portion 10C of the paper container 10 of this package 200 had three connecting portions as shown in Figure 7. The positions of the three connecting portions were the same as in Figure 7, with one connecting portion on the side where peeling of the lid label begins (the tab portion 35 side) and two connecting portions on the side where peeling of the lid label finishes (the curved portion 36 side). The width of each of the three connecting portions was 0.5 mm.

[0061] Example 5 A packaging body 200 was produced using the same procedure as in Example 1. The first intended opening portion 10C in the paper container 10 of this packaging body 200 had one connecting portion in each of a pair of slits SL along the longitudinal direction of the adhesive layer 52, in addition to the three connecting portions shown in Figure 7. That is, the first intended opening portion 10C in the packaging body 200 of Example 5 had five connecting portions. The width of each of the five connecting portions was 1.5 mm.

[0062] Example 6 A packaging body 200 was produced using the same procedure as in Example 1. The first intended opening portion 10C in the paper container 10 of this packaging body 200 had, in addition to the three connecting portions shown in Figure 7, two connecting portions in each of a pair of slits SL along the longitudinal direction of the adhesive layer 52. That is, the first intended opening portion 10C in the packaging body 200 of Example 6 had seven connecting portions. The width of each of the seven connecting portions was 1.5 mm.

[0063] (Comparative Example 1) A package was produced using the same procedure as in Example 1. The first intended opening portion of the paper container of this package had eight connecting portions. Two connecting portions were arranged on each of the four sides forming the outer edge of the first intended opening portion. That is, in Example 6, one connecting portion was arranged on the side where peeling of the lid label begins (the tab portion 35 side), whereas in Comparative Example 1, two connecting portions were also arranged on the side where peeling of the lid label begins. The width of each of the eight connecting portions was 1.0 mm.

[0064] [Packaging Evaluation 2] The lid labels 30 of the packages 200 produced in Examples 4 to 6 and Comparative Example 1 were peeled off while gripping and lifting the tab portion 35. At this time, it was evaluated whether the first intended opening portion 10C separated from the paper container 10 together with the lid label 30, forming a first opening (evaluation of openability). As a result, in Examples 4, 5, and 6, when the lid label 30 was peeled off from the paper container 10, the first intended opening portion 10C separated from the paper container 10 together with the lid label 30, forming a first opening in the paper container 10. In contrast, in Comparative Example 1, the first intended opening portion 10C did not separate from the paper container 10, and a first opening was not formed.

[0065] When the surface of the rim portion 12 was visually observed after the lid label 30 was peeled off, no damage was found on the rim portion in Example 4. In contrast, in Examples 5 and 6 and Comparative Example 1, part of the surface of the rim portion was also peeled off when the lid label was peeled off. [Industrial Applicability]

[0066] According to the present disclosure, it is possible to provide a container and a package that can sufficiently maintain the quality of the packaged contents even after opening. [Explanation of symbols]

[0067] 10...paper container, 10C...first opening planned portion, 10E...paper pattern, 10W...window, 11...paper base material, 11a...paper layer, 11b...pigment-containing layer, 12...rim portion, 14...adhesive layer, 16...resin layer, 16A...resin layer, 18...first opening, 30...lid label, 31...label layer, 32...adhesive layer, 32A...first portion, 32B...second portion, 32C...boundary, 35...tab portion, 36...curved portion, 40...inner bag, 40C...second opening planned portion, 41...bag body, 41A...flap label, 41H...penetration Hole, 42...Second opening, 44...Packaged object, 48...Periphery, 52...Adhesive layer, 61...Top surface, 62...Bottom surface, 72,73...Laminated body, 72A,72B,72A,73A...Surface, 100...Container, 200...Packaging body, C1, C2, C3...Connection Section, F1,F2,F3,F4,F5,F6,F7...flap, K1,K2,K3,K4,K5,K6,K7,K8,K9,K10,K11,K12...ruled line, PF...piece of paper, S1,S2,S3,S4...side, SL...slit.

Claims

1. a paper container having a storage section and a first intended opening section; a lid label adhered to the paper container so as to cover the first intended opening portion, A container in which, when the lid label is peeled off from the paper container, the first intended opening portion separates from the paper container together with the lid label, forming a first opening in the paper container.

2. A bag body made of a soft packaging material is provided in the storage section, a second intended opening portion is formed in the bag body, The container according to claim 1 , wherein the second intended opening portion is exposed at the first opening.

3. The container according to claim 2, wherein the bag body is adhered to at least a part of the inner surface of a rim portion of the paper container surrounding the first intended opening portion.

4. When the bag body is opened at the second intended opening portion to form a second opening, The container according to claim 2 or 3, wherein the second opening is smaller than the first opening, and the periphery of the second opening is surrounded by the first opening.

5. The surface of the lid label facing the paper container is made of an adhesive layer having adhesive properties, the adhesive layer has a first portion that adheres to the first intended opening portion and a second portion that adheres to a rim portion that surrounds the first intended opening portion, The container according to any one of claims 1 to 3, wherein the second portion has a weaker adhesive strength than the first portion.

6. A container according to any one of claims 1 to 3, wherein even after the first opening is formed, a portion of the lid label is adhered to the paper container, so that the lid label and the paper container are connected.

7. The container according to any one of claims 1 to 3, wherein the surface of a rim portion surrounding the first intended opening portion of the paper container facing the lid label is made of a resin layer.

8. The container according to any one of claims 1 to 3, wherein the paper container is composed of a laminate having a paper base material and a resin layer, and is for packaging food that requires refrigeration or freezing.

9. A container according to any one of claims 1 to 3; A package comprising an item packaged in the container.

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