Skin pack mount, skin pack package including same, and method of using same

Abstract

To provide mounting paper for a skin pack that can improve recyclability.SOLUTION: Mounting paper 10 for a skin pack is so configured that at least a paper base material layer 101 and a barrier layer 105 having a gas barrier property are sequentially laminated, and content 30 placed on the barrier layer 105 is covered by a skin pack film 20. The paper base material layer 101 and the barrier layer 105 are peelably laminated via a release layer 103.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a backing for a skin pack and a skin pack package including the same. The present invention also relates to a method of using the skin pack package. [Background technology]

[0002] A skin pack package for packaging contents such as food is disclosed in Patent Document 1. This package includes a mount and a skin pack film. The contents are placed on the mount and covered with the skin pack film. The skin pack film is heat-bonded to the mount in an area where it overlaps, and a vacuum is applied between the mount and the skin pack.

[0003] Furthermore, when packaging contents such as food, a barrier layer having gas barrier properties is laminated on the upper surface of the backing paper, and the contents are placed on the barrier layer. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-75391 A Summary of the Invention [Problem to be solved by the invention]

[0005] In recent years, due to growing environmental concerns, packaging materials are now separated by type when they are discarded after use. However, the above-mentioned backing paper is discarded with the barrier layer still laminated after the contents are removed, which has the problem of poor recyclability.

[0006] The present invention aims to provide a skin pack mount and a skin pack package that can improve recyclability, and also aims to provide a method of using the skin pack package that is highly recyclable. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the skin pack mount of the present invention is a skin pack mount in which at least a paper base layer and a barrier layer having gas barrier properties are laminated in sequence, and the contents placed on the barrier layer are covered with a skin pack film, and is characterized in that the paper base layer and the barrier layer are laminated in a peelable manner via a release layer.

[0008] According to this configuration, after the skin pack film is peeled off from the backing paper to remove the contents, the paper base layer and the barrier layer can be easily peeled off by the release layer.

[0009] The present invention is also characterized in that in the skin pack mount having the above-mentioned configuration, the adhesive strength between the paper base layer and the barrier layer at one end is lower than the adhesive strength between the paper base layer and the barrier layer at the other end.

[0010] Further, the present invention is characterized in that the skin pack mount having the above-mentioned configuration is formed into a rectangular shape when viewed from above, and the one end portion is disposed at a corner.

[0011] The present invention is also characterized in that, in the skin pack backing paper having the above-mentioned configuration, the release layer is formed from a release agent printed on the paper base material, and the area occupied per unit area of ​​the release agent at the one end is larger than the area occupied per unit area of ​​the release agent at the other end.

[0012] The present invention is also characterized in that the skin pack mount having the above-mentioned structure is formed into a tray shape by providing a recess in the area on which the contents are placed.

[0013] The present invention also provides a skin pack packaging body comprising a skin pack mount having the above-described configuration and a skin pack film having an easy-peel layer, characterized in that the contents are covered with the skin pack film which is heat-bonded to the skin pack mount and has the easy-peel layer disposed thereon.

[0014] The present invention also provides a skin pack packaging body comprising a skin pack backing paper of the above-mentioned configuration and a skin pack film having an easy-peel layer, in which the easy-peel layer is arranged on the skin pack backing paper and heat-bonded to the skin pack film to cover the contents, wherein the barrier layer is heat-bonded to the skin pack film on one end and is not bonded to the skin pack film on the other end.

[0015] The present invention also provides a method for using the skin pack packaging body having the above-mentioned configuration, characterized in that it includes an opening step of peeling off the skin pack film and the barrier layer to open the body, and a separation step of peeling off and separating the barrier layer and the paper base layer. Effect of the Invention

[0016] According to the present invention, the barrier layer can be easily peeled off from the paper base layer, and the skin pack mount can be easily disassembled, thereby improving the recyclability of the skin pack mount. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a perspective view showing a skin pack packaging body according to a first embodiment of the present invention; [Diagram 2] FIG. 1 is a vertical cross-sectional view showing a skin pack packaging body according to a first embodiment of the present invention. [Diagram 3] FIG. 1 is a cross-sectional view showing a layer structure of a skin pack packaging body according to a first embodiment of the present invention. [Figure 4] FIG. 1 is an enlarged plan view showing a peel layer of a skin pack packaging body according to a first embodiment of the present invention. [Diagram 5] FIG. 11 is a longitudinal sectional view showing a skin pack packaging body according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] [First embodiment] A first embodiment of the present invention will be described below with reference to the drawings. Figures 1 and 2 show a perspective view and a longitudinal sectional view of a skin pack packaging body 1. The skin pack packaging body 1 includes a mount 10 (skin pack mount) that is rectangular when viewed from above, and a skin pack film 20. The skin pack packaging body 1 packages foodstuffs such as meat, fresh fish, and prepared foods as contents 30.

[0019] The skin pack packaging 1 is formed by placing the contents 30 on the backing 10 and then overlapping the skin pack film 20 so as to cover the contents 30. Next, while vacuum suction is applied between the backing 10 and the skin pack film 20, the skin pack film 20 is heated and softened to conform to the shape of the contents 30 and adhere to the contents 30. Next, the backing 10 and the skin pack film 20 are heat sealed around the contents 30 in the annular heat-sealing region 41. This causes the contents 30 to be sealed between the skin pack film 20 and the backing 10.

[0020] In the skin pack packaging 1, the skin pack film 20 is in close contact with the surface shape of the contents 30, so air is unlikely to get in between the skin pack film 20 and the backing paper 10. Therefore, the skin pack packaging 1 has excellent storage stability.

[0021] The skin pack film 20 is not attached to the mount 10 at three corners 21a, 21b, and 21c. This allows a user to easily peel the skin pack film 20 off from the mount 10 by pinching any one of the corners 21a, 21b, and 21c of the skin pack film 20.

[0022] Fig. 3 is a cross-sectional view showing the layer structure of the mount 10 and the skin pack film 20, and Fig. 4 is a plan view showing an enlarged portion of the release layer 103. The mount 10 has, from the bottom side, a paper base layer 101, a release layer 103, an extruded resin layer 104, an interlayer adhesive layer 106b, a barrier layer 105, and a heat seal layer 106a.

[0023] The paper base layer 101 has a basis weight of, for example, 200 to 400 g / m 2The paper base layer 101 is made of a paperboard having a basis weight of 200 g / m 2 If the thickness of the paper base layer 101 is smaller than 400 g / m, the thickness of the paper base layer 101 is too thin and the rigidity is insufficient. 2 If it is larger than 100g / m, the cost will be high. Therefore, the basis weight of the paper base layer 101 is set to 200 to 400g / m 2 The range is preferably:

[0024] Printed layers 102a, 102b are formed on the upper and lower surfaces of the paper base layer 101 by printing patterns or the like with ink. The printed layers 102a, 102b are formed by double-sided printing on the paper base layer 101 by gravure printing or the like. By printing the opening and dismantling procedures for the skin pack packaging body 1 on the printed layers 102a, 102b, convenience is improved.

[0025] The release layer 103 is formed by printing a release agent such as a release varnish on the upper surface of the paper base layer 101. As the release varnish, a resin-based varnish (e.g., urethane-based, acrylic-based, soluble cellulose-based, polyamide-based, etc.) to which silicone, low molecular weight polyethylene wax, phosphate ester, etc. have been added can be used.

[0026] The release layer 103 is formed by dot-patterned release regions 103a formed by halftone printing of a release agent on the upper surface of the paper base layer 101 (see FIG. 4). The extruded resin of the extruded resin layer 104 penetrates between the release regions 103a to form adhesive regions 103b. The paper base layer 101 and the extruded resin layer 104 are bonded to each other in the adhesive regions 103b.

[0027] The peeling layer 103 can reduce the adhesive strength between the paper base layer 101 and the barrier layer 105 by forming the peeling region 103a per unit area to be large. The mount 10 is formed so that the area occupied by the peeling region 103a per unit area on the corner 21d (see FIG. 1) is larger than the area occupied by the peeling region 103a per unit area in other areas. This makes the adhesive strength between the paper base layer 101 and the barrier layer 105 on the corner 21d lower than in other areas.

[0028] The interlayer adhesive layer 106b, the barrier layer 105, and the heat seal layer 106a are formed of a laminated film. The extruded resin layer 104 bonds the interlayer adhesive layer 106b of the laminated film to the peeling layer 103 on the paper base layer 101. The extruded resin layer 104 is formed of an extruded resin such as polyethylene. The extruded resin layer 104 bonds the paper base layer 101 to the interlayer adhesive layer 106b via the adhesive region 103b. The thickness of the extruded resin layer 104 is preferably 15 μm.

[0029] The barrier layer 105 has gas barrier properties and improves the sealing performance. An olefin resin or a polyamide resin is used for the barrier layer 105, and an ethylene-vinyl alcohol copolymer (EVOH) having high gas barrier properties is preferably used. Note that a resin other than the olefin resin or the polyamide resin may be used.

[0030] The heat seal layer 106a and the interlayer adhesive layer 106b are disposed on the upper and lower surfaces of the barrier layer 105, respectively. The heat seal layer 106a and the interlayer adhesive layer 106b have thermoplastic properties and are formed of, for example, a polyethylene film having a thickness of 15 μm. The heat seal layer 106a is thermally bonded to the skin pack film 20. The interlayer adhesive layer 106b is bonded to the extruded resin layer 104. The interlayer adhesive layer 106b and the extruded resin layer 104 are made of the same resin, such as polyethylene, to improve the interlayer adhesive strength. The heat seal layer 106a and the interlayer adhesive layer 106b may be made of a thermoplastic resin other than a polyethylene film.

[0031] The mount 10 can be easily formed by bonding a paper base layer 101 to a laminated film having a heat seal layer 106a and an interlayer adhesive layer 106b laminated on both sides of a barrier layer 105 using an extruded resin such as polyethylene.

[0032] Next, the skin pack film 20 has, from the top side, an outer layer 201, a heat shrinkable layer 202, an adhesive layer 203, an intermediate layer 204, an adhesive layer 205, a heat shrinkable layer 206, and an easy peel layer 207 (see Figure 3).

[0033] The outer layer 201 is disposed on the outermost layer of the skin pack film 20, and has excellent flexibility and shape retention for the packaged contents 30. The outer layer 201 is formed of, for example, a polyethylene film having a thickness of 15 μm. The outer layer 201 may be made of a resin other than a polyethylene film.

[0034] The heat shrinkable layers 202, 206 are thermally shrunk by heat such as hot air. As a result, the skin pack film 20 shrinks along the outer shape of the contents 30 to cover the contents 30. A specific example of the resin film constituting the heat shrinkable layers 202, 206 is an ionomer resin having a thickness of 12 μm.

[0035] The intermediate layer 204 has gas barrier properties and improves the sealing performance. An olefin resin or a polyamide resin is used for the intermediate layer 204, and an ethylene-vinyl alcohol copolymer (EVOH) having high gas barrier properties is preferably used. Note that a resin other than the olefin resin or the polyamide resin may be used.

[0036] The adhesive layer 203 bonds the intermediate layer 204 to the heat shrinkable layer 202. The adhesive layer 205 bonds the intermediate layer 204 to the heat shrinkable layer 206. The adhesive layers 203 and 205 have thermoplastic properties and are formed of, for example, methyl methacrylate having a thickness of 5 μm.

[0037] The easy peel layer 207 is made of a resin that can be thermally bonded to the heat seal layer 106a of the backing 10, and has easy peel properties. The skin pack film 20 is thermally bonded to the backing 10 with the easy peel layer 207 disposed thereon. This allows the skin pack film 20 to be easily peeled off from the backing 10, improving the ease of opening the package.

[0038] The easy peel layer 207 may be a cohesive peeling type resin or an interface peeling type resin. As the cohesive peeling type resin, a blend resin of polyethylene (PE) and polypropylene (PP) can be suitably used. The easy peel layer 207 is preferably formed to a thickness of 10 μm.

[0039] 1 and 2, a user can easily pick up and peel off the barrier layer 105 from the paper base layer 101 at the corner 21d where the adhesive strength between the paper base layer 101 and the barrier layer 105 is low. This allows the barrier layer 105 to be easily peeled off from the paper base layer 101 starting from the corner 21d after peeling the skin pack film 20 from the mount 10.

[0040] In addition, the skin pack film 20 is thermally bonded to the barrier layer 105 at the corner 21d. Therefore, when peeling off the skin pack film 20 from the mount 10, the user can be guided to pick up any of the corners 21a, 21b, and 21c. This makes it possible to prevent the user from accidentally picking up the corner 21d and peeling off the paper base layer 101 when opening the package.

[0041] The present invention is not limited to the case where the mount 10 is rectangular when viewed from above. When the mount 10 is not rectangular when viewed from above, the same effect can be obtained by making the adhesive strength between the paper base layer 101 and the barrier layer 105 at one end of the mount 10 lower than the adhesive strength between the paper base layer 101 and the barrier layer 105 at the other end.

[0042] The skin pack packaging body 1 is used by carrying out an opening step and a separation step in that order. In the opening step, the skin pack film 20 is peeled off from the mount 10 by pinching any of the corners 21a, 21b, 21c. This opens the packaged contents 30. In the separation step, the corner 21d of the mount 10 is pinched and the barrier layer 105 is peeled off from the paper base layer 101. At this time, the barrier layer 105 can be easily peeled off from the paper base layer 101 via the release layer 103, and the mount 10 can be easily disassembled. This improves the recyclability of the mount 10.

[0043] According to this embodiment, the method of using the skin pack packaging 1 includes an opening step of peeling off the skin pack film 20 and the barrier layer 105 to open the skin pack packaging 1, and a separation step of peeling off and separating the barrier layer 105 and the paper base layer 101. The paper base layer 101 and the barrier layer 105 are laminated in a peelable manner via the release layer 103. As a result, in the separation step, the barrier layer 105 can be easily peeled off from the paper base layer 101 via the release layer 103, and the mount 10 can be easily disassembled. This improves the recyclability of the mount 10.

[0044] In addition, the adhesive strength between the paper base layer 101 and the barrier layer 105 at corner 21d, which is one end of the mount 10 that is rectangular when viewed from above, is lower than the adhesive strength between the paper base layer 101 and the barrier layer 105 at corners 21a, 21b, and 21c, which are the other end. This allows the user to easily pick up and flip the barrier layer 105 from the paper base layer 101 at corner 21d. Therefore, after peeling the skin pack film 20 from the mount 10, the barrier layer 105 can be easily peeled off from the paper base layer 101 starting from corner 21d.

[0045] Moreover, the barrier layer 105 is thermally bonded to the skin pack film 20 on the corner 21d, and is not bonded to the skin pack film 20 on the corners 21a, 21b, and 21c. This guides the user to pick up any of the corners 21a, 21b, and 21c when peeling the skin pack film 20 from the backing 10. This prevents the user from accidentally picking up the corner 21d and peeling off the paper base layer 101 when opening the package.

[0046] Furthermore, since the area occupied per unit area by the release agent at corner 21d is larger than the area occupied per unit area by the release agent at corners 21a, 21b, and 21c, the adhesive strength at corner 21d can be easily reduced.

[0047] [Second embodiment] Fig. 5 is a vertical cross-sectional view showing a skin pack packaging body 1 according to the second embodiment. For ease of explanation, the same reference numerals are used for the same explanations as those in the first embodiment shown in Figs. 1 to 4 described above. The mount 10 of this embodiment has a different shape from that of the first embodiment. The other parts are the same as those of the first embodiment.

[0048] The flat mount 10 is embossed to form a tray shape, with a recess in the central area where the contents 30 are placed. This allows the mount 10 to be used as a plate after peeling off the skin pack film 20 to open it, improving convenience.

[0049] Although the embodiment of the present invention has been described above, the scope of the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, the layer structure of the skin pack film 20 is not limited to the above embodiment. [Industrial Applicability]

[0050] The present invention can be utilized in skin pack packaging. [Explanation of symbols]

[0051] 1 Skin pack packaging 10 Mount 20 Skin Pack Film 21a, 21b, 21c, 21d corner 30 Contents 41 Thermal bonding area 101 Paper base layer 102a, 102b printing layer 103 Peeling layer 103a Peeling area 103b Adhesive area 104 Extrusion resin layer 105 Barrier Layer 106a Heat seal layer 106b Interlayer adhesive layer 201 Protective layer 202 Heat shrink layer 202, 206 Heat shrink layer 203, 205 Adhesive layer 204 Barrier Layer 207 Easy Peel Layer

Claims

1. A skin pack mount in which at least a paper base layer and a barrier layer having gas barrier properties are laminated in this order, and a content placed on the barrier layer is covered with a skin pack film, the paper base layer and the barrier layer are laminated to be peelable via a release layer, an adhesive strength between the paper base layer and the barrier layer at one end portion is lower than an adhesive strength between the paper base layer and the barrier layer at the other end portion; A skin pack mount characterized in that the release layer is formed by a dot pattern release area formed by halftone printing of a release agent printed on the paper base layer, and the area occupied per unit area of ​​the release area at one end is larger than the area occupied per unit area of ​​the release area at the other end.

2. 2. The skin pack mount according to claim 1, which is formed in a rectangular shape when viewed from above, and the one end is disposed at a corner.

3. 3. The mount for skin packs according to claim 1 or 2, characterized in that the mount is formed in a tray shape by providing a recess in an area on which the contents are placed.

4. A skin pack packaging body comprising a skin pack mount according to any one of claims 1 to 3 and a skin pack film having an easy-peel layer, characterized in that the contents are covered with the skin pack film which is heat-bonded to the skin pack mount with the easy-peel layer.

5. A skin pack package comprising the skin pack mount according to claim 1 or 2 and a skin pack film having an easy-peel layer, the easy-peel layer being disposed on the skin pack mount and thermally bonded to the skin pack film, the skin pack package covering the contents, A skin pack packaging body, characterized in that the barrier layer is thermally bonded to the skin pack film on the one end and is not bonded to the skin pack film on the other end.

6. A method for using the skin pack packaging body according to claim 4 or 5, an opening step of peeling off the skin pack film and the barrier layer; and a separation step of peeling off and separating the barrier layer and the paper base layer.

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