JP4184649B2 - Blister package - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a blister package in which an adhesive portion between a lid material and a container material is peeled off and opened 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 and can be easily grasped and opened by a finger. About the body.
[0002]
[Prior art]
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 contents storage part by vacuum forming the contents, and storing the contents in the inside, when covering the cover with a lid material and sealing the peripheral part by heat bonding, It is set as the heat bonding part. However, blister packs consisting of a lid and a flexible container are deep-drawing vacuum packaging machines that heat-mold the container, fill the contents, supply the lid, thermal bonding between the lid and the container, and vacuum Process, cutting through individual packaging body, and start of peeling because the lid material and the container material that become unbonded parts in the cutting process into individual packaging body are in close contact with each other at the cut surface The lid material and the container material are difficult to separate at the part, and it is difficult to grasp the edge, and it is difficult to peel off the heat-bonding part and open it.
[0003]
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. A blister package having a structure in which the lid material and the container material are less likely to adhere to each other at the non-thermally bonded portion that becomes the peeling start portion when the periphery of the blister package is thermally bonded and sealed is known. ing. However, even in the blister package of this configuration, the lid material and the container material are in close contact with each other at the cut surface which becomes the peeling start portion in the cutting process to the individual packaging body, and the lid material at the peeling start portion. It is difficult to make the container material separated from the container material without being in close contact with each other, and the problem of openability 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.
[0004]
[Problems to be solved by the invention]
The object of the present invention is to make it easy to grasp and open the edge of the lid material and the container material so that the lid material and the container material are not in close contact with each other at the peeling start portion, and to detect the position of the peeling start portion by touch. It is providing the blister package which was made to do.
[0005]
[Means for Solving the Problems]
A container material in which a plurality of point-like protrusions are formed by embossing, and a portion other than the point-like protrusions is formed flat and only a content storage portion is formed , and the other portions are formed flat. In the blister package that is detachably bonded at the peripheral thermal bonding portion, the lid material comprises an outer surface layer made of biaxially stretched polyethylene terephthalate, an intermediate layer having gas barrier properties, and an inner surface layer. is at least the peripheral edge peeling start portion one corner portion is formed as the non-heat-bonded portion of the timber, said plurality of point-like protrusions are formed in a region corresponding to the peeling start portion of the lid, the point-like projections By forming a blister package comprising a point-like protrusion protruding on the inner surface side having a diameter of 1.0-2.0 mm and a height of 0.1-0.8 mm and a point-like protrusion protruding on the outer surface side, Peeling and opening made non-thermally bonded With the lid and the container material can be prevented from adhesion in part, because the position of the separation start portion can be easily perceived by touch, it is easy to open blister packaging.
[0007]
Further, the point-like projections that protrude from the inner surface side are formed as a non-thermal bonding portion by forming the point-like projections into point-like projections that protrude toward the inner surface side and point-like projections that protrude toward the outer surface side. In this case, a gap corresponding to the height of the dot-like projection is formed between the lid material and the container material to prevent the lid material and the container material from coming into close contact with each other, and the lid material and the container material can be easily grasped with a finger. On the other hand, the point-like projections protruding to the outer surface side can more easily sense the position of the peeling start portion by touch.
[0008]
Furthermore, the point projections have a diameter of 1.0 to 2.0 mm and a height of 0.1 to 0.8 mm, so that the height of the dot projections between the lid material and the container material at the peeling start portion. It is possible to reliably form a gap corresponding to the above, and it becomes even easier to detect the position of the peeling start portion by touch.
[0009]
In the above blister package, a cylindrical point having excellent shape retention is obtained by forming the pointed protrusion by embossing using a mold having a cylindrical protrusion and a cylindrical hole. The protrusions can be formed reliably.
[0010]
In the above blister package, the lid material is formed by embossing the lid material at a stage before the lid material is bonded to the container material in the blister packaging machine. The manufacturing process can be simplified by omitting the embossing process, and it is difficult to roll up the part where the pointed protrusions are formed when the pointed protrusions are formed in the cover manufacturing process. The problem of becoming can be solved.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a plan view showing the embodiment, FIG. 2 is a sectional view taken along line II in FIG. 1, FIG. 3 is an enlarged sectional view taken along II-II in FIG. 1, FIG. 4 is a plan view showing the second embodiment, and FIG. 4 is a cross-sectional view taken along the line III-III, FIG. 6 is a cross-sectional view showing a mold for forming the dot-like projections on the lid material of the first embodiment, and FIG. 7 is a diagram showing the dot-like projections on the lid material of the second embodiment. FIG. 8 is a plan view showing a lid material film on which dot-like projections used in the first embodiment are formed, 2 is a content storage portion, and 3 is a heat Bonding part, 4 is a peeling start part, 5, 5 'is a dot-like protrusion, 6 is a content, 7, 7', 8, 8 'is a mold, a is a cylindrical protrusion, b is a cylindrical hole, 9 is A finish cut line, 11 is a lid material, 11 'is a lid material film, and 12 is a container material.
[0012]
The first embodiment of the present invention is as shown in FIGS. As shown in FIG. 1, the planar shape is such that a flat lid member 11 and a container material 12 in which the contents storage portion 2 is formed by thermoforming at the center portion and the periphery is a flat portion are a thermal bonding portion at the periphery. 3 is a rectangular blister package that is adhered and sealed in such a way as to be peeled off, and one corner is defined as a peeling start portion 4 in which the thermal bonding portion 3 is not formed. A plurality of dot-like projections 5 projecting to the inner surface side are formed in the corresponding region, and the lid member 11 and the container material 12 are not in close contact with each other at the peeling start portion 4 where the dot-like projections 5 are formed. The lid member 11 and the container member 12 are hardly adhered to each other at the cut surface of the start portion 4.
[0013]
As shown in FIG. 2, the cross-sectional shape of the embodiment is a cover material in a state where the content storage portion 2 is formed at the center and the content 6 is stored in the content storage portion 2 of the container material 12 having a flat peripheral edge. 11 is covered and sealed in a thermally adhesive portion 3 at the periphery, and the cross-sectional shape of the portion where the dotted protrusion 5 is formed in the peeling start portion 4 of the lid 11 is shown in FIG. As shown in FIG. 4, the lid member 11 formed with a plurality of dot-like projections 5 projecting to the inner surface side and the container material 12 overlap each other, and the height of the dot-like projection 5 is between the lid material 11 and the container material 12. A gap corresponding to is formed, and the lid member 11 and the container member 12 are completely separated. Since a plurality of dot-like projections 5 projecting to the inner surface side are formed on the lid material 11, the lid material 11 and the container 11 are heated by heat when the lid material is thermally bonded to the container material 12 in the peeling start portion 4 that is not thermally bonded. The device 12 can be prevented from coming into close contact with each other, and the lid material 11 and the container material 12 can hardly be brought into close contact with each other at the cut surface of the peeling start portion 4. It becomes easy to grasp the end portion of the paper and becomes easy to open. In addition, the point-like protrusions 5 formed on the lid member 11 make it difficult to slip, and the edge of the lid member 11 is easily grasped.
[0014]
The second embodiment of the present invention is as shown in FIGS. As shown in FIG. 4, the planar shape is formed by forming a plurality of dot-like protrusions 5 protruding to the inner surface side and a dot-like protrusion 5 ′ protruding to one outer surface side on the lid member 11 in the peeling start portion 4. Compared to the first embodiment, the shape of the dot-like protrusions formed on the lid member 11 in the peeling start portion 4 is different. As shown in FIG. 5, the cross-sectional shape of the portion where the point-like protrusion 5 and the point-like protrusion 5 ′ are formed in the peeling start portion 4 of the lid member 11 protrudes toward the inner surface side and protrudes toward the outer surface side. The lid member 11 on which the point-like projections 5 ′ are formed and the container material 12 overlap each other, and a gap corresponding to the height of the dot-like projections 5 is formed between the lid material 11 and the container material 12. 11 and the container material 12 are completely separated from each other, and the lid material 11 and the container material 12 are made difficult to adhere to each other. It can sense where the position is. In addition, the number and arrangement of the dot-like projections 5 protruding to the inner surface side and the dot-like projections 5 'protruding to the outer surface side formed on the lid member 11 in the peeling start portion 4 are arbitrary.
[0015]
In the first and second embodiments, the dot-like projections 5 and 5 ′ formed on the lid member 11 have a diameter of 1.0 to 2.0 mm and a height of 0.1 to 0.8 mm. The point-like protrusions 5 and 5 ′ are formed at intervals of 1.0 to 5.0 mm. If the diameter of the point-like protrusions 5 and 5 ′ is larger than 2.0 mm, the formed point-like protrusions 5 and 5 ′ are liable to be crushed. Therefore, the height of the point-like protrusions 5 between the lid material 11 and the container material 12 is increased. It is difficult to reliably form a gap corresponding to the above, and when the diameter of the point-like protrusions 5 and 5 'is smaller than 1.0 mm, it becomes difficult to form a high cylindrical point-like protrusion having a sharp shape. . By setting the height of the dot-like projections 5 and 5 'to 0.1 to 0.8 mm, a gap can be formed between the lid member 11 and the container member 12, and the lid member 11 and the container member 12 are in close contact with each other. In the peeling start part 4, the lid member 11 and the container material 12 are easily grasped and opened easily. Moreover, it becomes easy to sense the position of the peeling start part 4 by a tactile sense.
[0016]
In order to form the dot-like protrusions 5 of the lid 11 of the first embodiment, as shown in FIG. 6, a mold 7 having a cylindrical protrusion a having a round tip and a mold 8 having a cylindrical hole b are used. In use, by placing the lid 11 between the mold 7 and the mold 8 and pressurizing and embossing, the cylindrical dot-like projection 5 having a round tip can be formed on the lid 11. Further, in order to form the dot-like protrusion 5 and the dot-like protrusion 5 ′ on the lid member 11 of the second embodiment, as shown in FIG. 7, a gold provided with a cylindrical protrusion a and a cylindrical hole b with rounded tips. By using a mold 7 ', a mold 8' provided with a cylindrical hole b and a cylindrical projection a, and placing a lid 11 between the mold 7 'and the mold 8', pressurizing and embossing The lid member 11 can be formed with the cylindrical point-like protrusions 5 and the point-like protrusions 5 ′ having round tips. The embossing using the molds 7, 7 'and the molds 8, 8' is preferably performed at room temperature, so that the workability of the embossing can be improved. The dot-like protrusions 5 and 5 'formed by embossing using a mold having a cylindrical protrusion a and a cylindrical hole b having a round tip have a sharp cylindrical shape and excellent shape retention. It will be a thing.
[0017]
In the blister packaging machine, the dot-like projections 5 and 5 'of the lid member 11 in the first and second embodiments are provided with a cylindrical projection a and a cylindrical hole b with rounded tips as shown in FIGS. It is formed by embossing the lid 11 using a mold. A plan view of the lid material film 11 ′ that is the lid material 11 of the first embodiment in which the dot-like projections 5 are formed in the blister packaging machine is, for example, as shown in FIG. A plurality of dot-like projections 5 are formed in a predetermined region in three rows in the width direction, in register with the pattern printed on the lid film 11 ′ at one corner corresponding to the finished cut line 9. It is formed. The cover material film 11 ′ having a plurality of dot-like projections 5 formed in the predetermined area is superimposed on the upper surface of the container material 12 in which the content storage portion is formed by vacuum forming and filled with the content. The blister package of the first embodiment can be produced by forming a heat-bonding portion on the periphery of the storage portion and sealing it, and then cutting the finished cut line.
[0018]
In the blister packaging machine, by adopting a manufacturing method that embosses the lid material film to form point-like projections, it is not necessary to provide an embossing step separately when manufacturing the lid material film, and the step of forming point-like projections Since it can be omitted, the blister package manufacturing process can be simplified, the cost can be reduced, and when the dot projection is formed in the lid film manufacturing process, the dot projection is high because the dot projection is high. It is possible to solve the problem that the formed portion is raised and cannot be wound up well.
[0019]
As the cover material 11 of the blister package, a laminate comprising an outer surface layer with excellent dimensional stability, an intermediate layer with 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.
[0020]
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.
[0021]
As the container material 12 of the blister package, a laminate comprising an outer surface layer, an intermediate layer excellent in 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), etc. are 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 constitution of the container material 12, a coextruded film made of unstretched nylon (CN), ethylene-vinyl alcohol copolymer (EVOH) and 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.
[0022]
【The invention's effect】
In the peeling start part of the blister package, the diameter is 1.0 to 2.0 mm and the height is 0.1 by embossing using a mold having a cylindrical projection and a mold having a cylindrical hole as a lid. A structure in which a plurality of point-like protrusions protruding to the inner surface side of ~ 0.8 mm are formed, or a point-like protrusion protruding to the inner surface side and a point protrusion protruding to the outer surface side are formed, whereby the peeling start portion Since a gap corresponding to the height of the dot-like projection is formed between 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, and at the cut surface of the peeling start portion, Since it becomes difficult for the container material to adhere, the edge of the lid material and the container material can be easily grasped at the peeling start portion, and the blister package can be easily opened by peeling the thermal bonding portion. Further, the position of the peeling start portion can be easily sensed by tactile sensation with the dot-like projections protruding outward.
[0023]
In addition, the embossing process is omitted in the production of the lid material by forming the dot-like projections by embossing the lid material at the stage before the lid material is bonded to the container material in the blister packaging machine. The manufacturing process can be simplified, and the problem that it becomes difficult to roll up the portion of the lid material where the dot-like protrusions are formed in the lid material production process and roll up into a roll shape.
[Brief description of the drawings]
FIG. 1 is a plan view showing a first embodiment.
2 is a cross-sectional view taken along the line II in FIG.
3 is an enlarged sectional view taken along line II-II in FIG.
FIG. 4 is a plan view showing a second embodiment.
FIG. 5 is a cross-sectional view taken along line III-III in FIG.
FIG. 6 is a cross-sectional view showing a mold for forming dot-like projections on the lid member of the first embodiment.
FIG. 7 is a cross-sectional view showing a mold for forming dot-like protrusions on the lid member of the second embodiment.
FIG. 8 is a plan view showing a lid material film on which dot-like projections used in the first embodiment are formed.
[Explanation of symbols]
2 Contents storage part 3 Thermal bonding part 4 Peeling start part 5, 5 'Dot protrusion 6 Contents 7, 7', 8, 8 'Mold a Cylindrical protrusion b Cylindrical hole 9 Finish cut line
11 Lid
11 'Lid film
12 Container material

Claims (3)

A container material in which a plurality of point-like protrusions are formed by embossing, and a portion other than the point-like protrusions is formed flat and only a content storage portion is formed , and the other portions are formed flat. In the blister package that is detachably bonded at the peripheral thermal bonding portion, the lid material comprises an outer surface layer made of biaxially stretched polyethylene terephthalate, an intermediate layer having gas barrier properties, and an inner surface layer. is at least the peripheral edge peeling start portion one corner portion is formed as the non-heat-bonded portion of the timber, said plurality of point-like protrusions are formed in a region corresponding to the peeling start portion of the lid, the point-like projections A blister package comprising a dot-like projection protruding to the inner surface side having a diameter of 1.0 to 2.0 mm and a height of 0.1 to 0.8 mm and a dot-like projection protruding to the outer surface side .   The blister package according to claim 1, wherein the dot-like projections are formed by embossing using a mold having a cylindrical projection and a cylindrical hole.   3. The point-like projections are formed by embossing the lid material at a stage before the lid material is bonded to the container material in a blister packaging machine. Blister packaging.

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