JP2012106797A - Blister package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blister package, in which pinching of respective end edges of a lid member and a container member is facilitated so that opening the blister package is facilitated, by inhibiting adherence between the lid member and the container member at their peeling start parts.SOLUTION: In the blister package 1 including the lid member and the container member formed with a content containing portion 3 which are peelably hermetically-sealed at a peripheral flat part 2 as a thermal adherence part 4, at least one corner of the peripheral edge part serves as the peeling start part 5 where the thermal adherence part 4 is not formed, and an area corresponding to the peeling start parts 5 of either or both of the lid member and the container member is an irregularity formed part 6.

Description

  The present invention provides a blister that is easy to be opened and opened by peeling the adhesive part of the lid material and the container material so that the edges of the lid material and the container material are not in close contact with each other at the peeling start portion. It relates to a package.

  Conventionally, in a blister package that contains contents such as sliced ham, sliced bacon, etc., which is made of a lid and a flexible container, and the lid and the container are sealed so as to be peelable at the peripheral heat-bonding portion, the container After forming the content storage part by vacuum forming and storing the content inside, the cover is covered and the peripheral part is thermally bonded and sealed, and the corner part that becomes the peeling start part is heated. The non-thermal bonding portion is formed without forming the bonding portion. However, since the container material is heated when the content storage part is formed on the container material by vacuum forming, the lid material and the container material are in close contact with each other at the peeling start portion which is a non-thermally bonded part by the heat. Therefore, it is difficult to grip the edges of the lid material and the container material at the peeling start portion, and there is a drawback that it is difficult to peel off and open the thermal bonding portion.

  In order to remedy the above drawbacks, a release agent is partially formed on the facing surface of either the lid material or the container material in the peeling start portion where the edge of the lid material and the container material is grasped with a finger to start peeling. When the peripheral edge of the blister package is heat-sealed and sealed, the non-thermally bonded part that becomes the peeling start part can keep the lid material and the container material in a separated state without being in close contact with each other. Blister packs of construction are known. However, even in the blister package of this configuration, it is difficult to separate the lid material and the container material without being in close contact with each other at the peeling start portion, and the openability problem is still not solved. In addition, there is a drawback that the process of partially printing the release agent on the surface of the lid material or container material at the peeling start portion becomes extremely complicated.

  The object of the present invention is to separate the edge of the lid material and the container material at the separation start portion as a state where the lid material and the container material are separated from each other without being in close contact with each other at the separation start portion which is a non-thermal bonding portion between the lid material and the container material. It is to provide a blister package that is easy to grasp.

  In a blister package in which a lid material and a container material in which a content storage portion is formed are sealed so as to be peelable at a peripheral heat-bonding portion, a peeling start portion where at least one corner portion of the peripheral edge is not formed with a heat-bonding portion And forming a heat bonding portion along the periphery of the contents storage portion by adopting a configuration in which the region corresponding to the peeling start portion of either one or both of the lid material and the container material is an unevenness forming portion. When sealing the lid material and the container material, it is possible to prevent the lid material and the container material from coming into close contact with each other at the separation start portion where the thermal bonding portion is not formed. The edge can be easily grasped, and the heat-bonding portion can be peeled off and easily opened.

  In the above blister package, since the unevenness forming part is intermittently formed at the position of the peeling start part, only the part corresponding to the peeling start part becomes the unevenness forming part, so the appearance of the blister package Does not deteriorate the design.

  In the above blister package, it is easy to adjust the position of the concavo-convex forming part to the peeling start part by adopting a configuration in which the concavo-convex forming part is formed in a continuous belt shape along one side including the peeling start part. Therefore, it becomes possible to simplify the process of providing the concavo-convex forming part, and the blister package can be easily manufactured.

  In the above blister package, the concavo-convex forming portion is composed of a plurality of dot-like projections protruding toward the inner surface side of the lid material formed by embossing, so that the separation start portion has a gap between the lid material and the container material. Since a gap is formed by the dot-like projections, it is possible to prevent the lid material and the container material from coming into close contact with each other. In addition, the depressions and projections can be easily formed on the lid by pressurization using a male mold and a female mold.

  In a blister package in which a lid material and a container material in which a content storage portion is formed are sealed so as to be peelable at a peripheral heat-bonding portion, a peeling start portion where at least one corner portion of the peripheral edge is not formed with a heat-bonding portion And forming a heat bonding portion along the periphery of the contents storage portion by adopting a configuration in which the region corresponding to the peeling start portion of either one or both of the lid material and the container material is an unevenness forming portion. When sealing the lid material and the container material, it is possible to prevent the lid material and the container material from coming into close contact with each other at the separation start portion where the thermal bonding portion is not formed. The edge can be easily grasped, and the heat-bonding portion can be peeled off and easily opened.

  In the above blister package, since the unevenness forming part is intermittently formed at the position of the peeling start part, only the part corresponding to the peeling start part becomes the unevenness forming part, so the appearance of the blister package Does not deteriorate the design.

  In the above blister package, it is easy to adjust the position of the concavo-convex forming part to the peeling start part by adopting a configuration in which the concavo-convex forming part is formed in a continuous belt shape along one side including the peeling start part. Therefore, it becomes possible to simplify the process of providing the concavo-convex forming part, and the blister package can be easily manufactured.

  In the above blister package, the concavo-convex forming portion is composed of a plurality of dot-like projections protruding toward the inner surface side of the lid material formed by embossing, so that the separation start portion has a gap between the lid material and the container material. Since a gap is formed by the dot-like projections, it is possible to reliably prevent the lid material and the container material from coming into close contact with each other. In addition, the depressions and projections can be easily formed on the lid by pressurization using a male mold and a female mold.

The top view which shows 1st Embodiment. II expanded sectional view in FIG. The top view which shows the cover material film used for 1st Embodiment. The top view which shows 2nd Embodiment. The top view which shows the cover material film used for 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing the first embodiment, FIG. 2 is an enlarged cross-sectional view taken along the line II in FIG. 1, FIG. 3 is a plan view showing a lid material film used in the first embodiment, and FIG. FIG. 5 is a plan view showing a lid material film used in the second embodiment, 1, 1 ′ is a blister package, 2 is a flat part, 3 is a content storage part, and 4 is heat bonded. , 5 is a peeling start part, 6 and 7 are concavo-convex forming parts, 8 is concavo-convex, 9 is a content, 10 is a finished cut line, 11 is a cover material, 11 ′ and 11 ″ are cover material films, and 12 is a container material Respectively.

  The blister package 1 of the first embodiment of the present invention is as shown in FIGS. 1 and 2 and is manufactured using the lid material film 11 ′ shown in FIG. 3. As shown in FIG. 1, the outer shape is a flat lid member 11, and a container material 12 in which the content storage portion 3 is formed by thermoforming at the center portion and the periphery is the flat portion 2, and the thermal bonding portion at the periphery. 4 is a rectangular blister package that is adhered and sealed in a peelable manner, with one corner being a peeling start portion 5 where the thermal bonding portion 4 is not formed, and the peeling start portion 5 of the lid member 11 The corresponding regions are intermittently provided as the unevenness forming part 6, and the lid material 11 and the container material 12 are separated from each other at the peeling start part 5 by the unevenness 8 formed by the dot-like projections of the unevenness forming part 6. It is the structure made into the state. In 1st Embodiment, the unevenness | corrugation 8 which consists of several dotted | punctate protrusion which protrudes in the inner surface side of the cover material 11 is provided by embossing the cover material 11 in the uneven | corrugated formation part 6 using a male type and a female type | mold. It is formed in a triangular shape in register with the pattern printed on the material 11.

  As shown in FIG. 2, the cross-sectional shape taken along the line II in FIG. 1 of the first embodiment is that the flat lid member 11 and the container material 12 in which the content storage unit 3 for storing the content is formed are the container material. In the state where the content 9 is stored in the content storage unit 12 of 12, the peeling start portion 5 is sealed at the periphery by the heat bonding portion 4, and the corner portion is the non-bonding portion of the lid material 11 and the container material 12. The portion corresponding to the peeling start portion 5 of the lid member 11 is a concavo-convex forming portion 6 in which the concavo-convex portion 8 formed of a plurality of dot-like projections protruding toward the inner surface side of the lid member 11 is formed. Therefore, since it is possible to maintain the state in which the lid member 11 and the container material 12 are separated from each other without being in close contact with each other by the plurality of dot-like projections at the peeling start portion 5, the lid material is removed at the peeling start portion 5 when opening. 11 and the end of the container 12 can be easily grasped and opened easily. Moreover, it becomes difficult to slip due to the unevenness 8 formed by the dot-like projections formed on the lid member 11, and the edge of the lid member 11 is easily grasped.

  The lid material film 11 'used for producing the blister package 1 of the first embodiment is as shown in FIG. The lid film 11 ′ has three rows in the width direction defined by the finished cut line 10, and the triangular uneven portion 6 is formed at a predetermined position of one corner with respect to the finished cut line 10. It is provided intermittently. The concavo-convex forming portion 6 is formed at a predetermined position in register with the pattern printed on the lid material film 11 ′.

  The blister package 1 ′ of the second embodiment of the present invention is as shown in FIG. 4 and is produced using the lid material film 11 ″ shown in FIG. Although it is the same as 1st Embodiment, the uneven | corrugated formation part 7 of the lid | cover material 11 in the peeling start part 5 is not provided intermittently corresponding to the peeling start part 5, but includes one peeling start part 5 The second embodiment is different from the first embodiment in that it is provided in a band shape having a predetermined width along the side, and in the second embodiment, the unevenness forming portion 7 is continuously provided in a band shape, so that the lid When manufacturing the material 11, it is not necessary to register the pattern printed on the lid material film 11 ″ and the unevenness forming portion 7 in the flow direction of the lid material film 11 ″, so that the manufacturing process can be simplified.

  The lid material film 11 ″ used for producing the blister package 1 ′ of the second embodiment is as shown in FIG. 5. The lid material film 11 ″ is defined by the width direction defined by the finished cut line 10, respectively. The outer end edge of the continuous strip-shaped unevenness forming portion 7 having a predetermined width is set to 0. 0 from the side parallel to the flow direction of the lid material film 11 "of the quadrangular finished cut line 10. It is provided so as to be at an inner position of about 5 mm, so that the concave / convex forming portion 7 does not come on the cut line 10, so that the lid material can be prevented from being cut from the cut line portion. The portion 7 is formed continuously at a predetermined position in the width direction with respect to the pattern printed on the lid material film 11 ″, and like the lid material film 11 ′, the flow direction of the lid material film 11 ″ Match the pattern and register There is no need to provide the deficient formation of irregularities forming portion 7 is facilitated.

  In 1st, 2nd embodiment, although the structure which formed the unevenness | corrugation 8 which consists of dotted | punctate protrusion only in the area | region corresponding to the peeling start part 5 of the cover material of blister package 1,1 'was demonstrated, The structure which formed the unevenness | corrugation 8 which is formed only in the area | region corresponding to the peeling start part 5 of a container material, or the structure which formed the unevenness | corrugation 8 which consists of dotted | punctate protrusion in the area | region corresponding to the peeling start part 5 of both a cover material and a container material It can also be. When the irregularities 8 made of dot-like projections are intermittently formed corresponding to the peeling start portion 5 as in the first embodiment, a configuration in which the irregularities 8 are formed only on the lid material is preferable. Further, when the unevenness 8 is formed only on the container material, or when the unevenness 8 is formed on both the lid material and the container material, the unevenness 8 is made to correspond to the peeling start part 5 as in the second embodiment. It is preferable to form continuously.

  The shape of the unevenness formed by embossing in the first and second embodiments is not particularly limited as long as it is possible to prevent the cover material 11 and the container material 12 from coming into close contact with each other. It is preferable to use a point-like protrusion or a line-like protrusion protruding toward the inner surface. The unevenness 8 is formed by embossing using a male mold and a female mold. When the unevenness 8 is a dot-like projection, the diameter is 50 to 2000 μm, the height is 15 to 2000 μm, and the interval is 500 to 2000 μm. Is preferred.

  As in the first embodiment, in order to intermittently form the unevenness forming portion 6 on the lid material film 11 ′, after producing the lid material film 11 ′ in the lamination step, the lid material film 11 ′ in a separate step. In the process of forming the irregularity forming part 6 having a predetermined shape intermittently in register with the pattern printed on the container, or filling and packaging the contents while intermittently transferring the lid material and the container material Then, before the lid material is thermally bonded to the container material, it can be performed by a method in which the irregularity forming portion is formed in a predetermined shape by registering the pattern printed on the lid material. Further, as in the second embodiment, in order to form the concavo-convex forming portion 7 that is continuous with the lid member 11, a lid material film 11 ″ is produced in a lamination step, and is slit into a predetermined width to form a roll-like lid material. Before forming the blister package by filling the contents in a continuous belt shape with a predetermined width in the slit process to be the film 11 ″, and before thermally bonding the lid material to the container material, It can be performed by a method of forming the lid material film 11 ″ at a predetermined position in the width direction. In the case of the second embodiment, the pattern printed on the lid material film 11 ″ in the flow direction of the lid material film 11 ″. Since the problem of registration is eliminated, it is easy to form the unevenness forming portion 7 on the lid material film 11 ″.

  As the lid member 11, a laminate including an outer surface layer having excellent dimensional stability, an intermediate layer having excellent gas barrier properties, and an easily peelable inner surface layer is used. As the outer surface layer, a stretched film such as biaxially stretched polyethylene terephthalate (PET) having excellent heat resistance and dimensional stability is used. A pattern is printed on the inner surface of the outer surface layer, but in the case of a blister package, since the pitch accuracy of the pattern is required, biaxially stretched polyethylene terephthalate is generally used. As the intermediate layer, ethylene-vinyl alcohol copolymer (EVOH), biaxially stretched polyethylene terephthalate (VMPET) having a metal oxide vapor deposition layer, vinylidene chloride coated cellophane (KM), or the like is used. As the inner surface layer, an easily peelable film that can form an easily peelable heat-bonding portion when thermally bonded to a polyolefin resin is used. Moreover, when the inner surface layer of a container material has easy peelability, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ethylene-vinyl acetate copolymer (EVA), ionomer, etc. can be used.

  Examples of the structure of the lid 11 include PET / printing / dry lamination (DL) EVA / EVOH / EVA (co-extruded film), vinylidene chloride coated biaxially oriented polypropylene (KOP) / printing / DL / PET / EVA, Stretched polypropylene (CPP) / DL / VMPET / printing / LLDPE, biaxially stretched polypropylene / DL / VMPET / printing / EVA, CPP / DL / KM / printing / EVA, OPP / DL / KM / printing / EVA and the like.

  As the container material 12, a laminate composed of an outer surface layer, an intermediate layer having excellent gas barrier properties, and a heat-adhesive resin layer is used. Since the container material 12 requires excellent thermoformability and flexibility, unstretched nylon (CN), amorphous polyester (A-PET), unstretched polypropylene (CPP), or the like is used as the outer surface layer. The In general, an ethylene-vinyl alcohol copolymer (EVOH) is used as the intermediate layer having excellent gas barrier properties. As the thermal adhesive resin layer, low density polyester (PE), linear low density polyethylene (LLDPE), ethylene-vinyl acetate copolymer (EVA), or the like is used. As a configuration of the container material 12, a coextruded film made of unstretched nylon (CN), an ethylene-vinyl alcohol copolymer (EVOH), and an ethylene-vinyl acetate copolymer (EVA) is generally used. The thickness of the coextruded film made of CN / EVOH / EVA is 80 to 160 μm. The coextruded film is a film excellent in thermoformability and gas barrier properties. A container material having a structure in which unstretched polypropylene (CPP) or amorphous polyester (A-PET) is laminated on the CN surface of the coextruded film is also used.

1, 1 'Blister package 2 Flat part 3 Contents storage part 4 Thermal bonding part 5 Peeling start part 6, 7 Concavity and convexity formation part 8 Concavity and convexity 9 Contents 10 Finish cut line 11 Lid material 11', 11 "Lid material film 12 Container material

The present invention according to claim 1 is characterized in that foods such as sliced ham and slice bacon, which are hermetically sealed so as to be peeled off by a thermal bonding part at the periphery of the lid material and the flexible container material in which the contents storage part is formed, are contained in the contents. In the blister package for storing as at least one corner of the peripheral edge is a peeling start portion where the thermal bonding portion is not formed, and an area corresponding to the peeling start portion of only the container material is embossed and it is characterized in that having the configuration which is concave and convex formed portion.

Further, the present invention according to claim 2 provides food such as sliced ham and sliced bacon, which is sealed so that the lid and the flexible container material in which the contents storage part is formed can be peeled off at the peripheral heat-bonding part. In a blister package for storing as contents, at least one corner of the periphery is a peeling start portion where the thermal bonding portion is not formed, and an area corresponding to the peeling start portion of only the container material is embossed The container material is composed of a laminate including an outer surface layer, an intermediate layer having excellent gas barrier properties, and a heat-adhesive resin layer. The layer is any one of unstretched nylon, amorphous polyester, and unstretched polypropylene, and the intermediate layer is an ethylene-vinyl alcohol copolymer .

By adopting the configuration according to any one of claims 1 and 2, when the heat bonding portion is formed along the periphery of the content storage portion and the lid member and the container material are sealed, the heat bonding portion is not formed. Since it is possible to prevent the lid material and the container material from coming into close contact with each other at the peeling start portion, the edge of the lid material and the container material can be easily grasped at the peeling start portion, and the thermal bonding portion is peeled off and easily opened Can

Further, the unevenness can be easily formed by pressurization using a male mold and a female mold .

Claims (4)

In the blister package in which the lid material and the container material in which the contents storage portion is formed are sealed so as to be peelable at the peripheral heat bonding portion, at least one corner portion of the peripheral edge is not peeled off. A blister package having a configuration in which a region corresponding to the peeling start portion of either one or both of the lid member and the container member is an unevenness forming portion. The blister package according to claim 1, wherein the unevenness forming portion is formed intermittently at the position of the peeling start portion. The blister package according to claim 1, wherein the unevenness forming part is formed in a continuous band shape along one side including the peeling start part. The blister package according to any one of claims 1 to 3, wherein the unevenness forming portion is composed of a plurality of dot-like protrusions protruding toward the inner surface of the lid member formed by embossing.

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