JP2002179139A - Packaging body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging body which can be handled easily as a press- through package, which does not hurt the inside of a body even when the same is swallowed by mistake, the storage part of which is superior in molding characteristics, and which is superior in barrier, especially moisture barrier characteristics. SOLUTION: This packaging body comprises a bottom material forming at least one storage part for storing an item and a cover material covering the storage part of the bottom material. The cover material is broken to take out the stored item. The bottom material comprises a laminate sheet made of an annular polyolefin layer and a polyolefin layer, and the cover material is made of a sheet member mainly using paper.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a package for packaging items such as medicines such as tablets and capsules, and foods.

[0002]

2. Description of the Related Art Conventionally, a package for wrapping a container such as a tablet or a capsule comprises, for example, a bottom member made of a polyvinyl chloride sheet having a thickness of 250 to 300 μm and having a storage portion for storing the container. A press-through package (PTP), which consists of an aluminum foil lid material that seals the storage part, pushes the storage part of the bottom material into the lid material side, breaks part of the lid material, and takes out the stored items is the mainstream Met. This PTP has the advantage that the stored items can be stored compactly, it is easy to handle, and the stored items can be relatively easily taken out just by pushing in from the bottom material side. However, the polyvinyl chloride sheet that constitutes the bottom material has rigidity. However, since the corners are sharp, there is a problem that the throat and the esophagus are damaged when the whole package is accidentally swallowed.

On the other hand, the above problem can be solved by using a soft material that is less likely to be damaged even if swallowed by mistake as a constituent material of the package, but it is also necessary to provide a certain degree of rigidity in terms of ease of handling. There is a need to. From such a viewpoint, a configuration in which a bottom material made of a soft plastic sheet is combined with a lid material mainly made of paper is considered, but in this case, the plastic sheet constituting the bottom material has flexibility. However, it is necessary to use a sheet that is considerably thinner than the existing sheet for bottom material. However, when a thin sheet made of a flexible plastic sheet such as polyvinyl chloride or polypropylene, which has been conventionally used as a bottom material for PTP, is used, the moisture-proof property is reduced. When applied to a package for storing articles, satisfactory moisture-proof properties cannot be obtained. On the other hand, there is a proposal to use a monolayer sheet of a cyclic polyolefin having a high moisture-proof property as a bottom material for PTP (Japanese Patent Application Laid-Open No. 7-178884). It was unsuitable as a constituent material of a bottom material for a car.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and while maintaining the ease of handling of PTP, there is little risk of harm to the body if swallowed by mistake, and the stored items are stored. It is an object of the present invention to provide a package which is excellent in moldability and flexibility of a storage portion and has excellent barrier properties, particularly excellent water vapor barrier properties.

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and the invention according to claim 1 is characterized in that a bottom member having at least one storage portion for storing a storage object is provided. And a lid material which is attached to the storage portion of the bottom material so as to cover the storage portion. Is composed of a laminated sheet of a cyclic polyolefin layer and a polyolefin layer, and the lid member is composed of a sheet member mainly composed of paper.

[0006] The invention described in claim 2 is the invention according to claim 1.
Wherein the laminated sheet comprises an intermediate layer made of cyclic polyolefin and outer layers made of polyethylene on both sides of the intermediate layer.

Further, according to a third aspect of the present invention, in the package according to the first or second aspect, the cyclic polyolefin layer constituting the laminated sheet is made of a cyclic polyolefin having a glass transition point of 100 ° C. or less. It is characterized by the following.

Further, according to a fourth aspect of the present invention, in the package according to the first or second aspect, the cyclic polyolefin layer constituting the laminated sheet is made of a cyclic polyolefin having a glass transition point of 80 ° C. or less. It is characterized by the following.

Further, according to a fifth aspect of the present invention, in the package according to any one of the first to fourth aspects, the cyclic polyolefin layer constituting the laminated sheet is an open polymer of a nobornene monomer. Or a hydrogenated product thereof.

[0010] Further, the invention according to claim 6 is the package according to any one of claims 1 to 5, wherein a total of a laminated sheet of a cyclic polyolefin layer and a polyethylene layer constituting a bottom material. Thickness is 100μm or more and 250μm
It is characterized by the following.

[0011] Further, the invention according to claim 7 is the package according to any one of claims 1 to 5, wherein the laminated sheet of the cyclic polyolefin layer and the polyethylene layer constituting the bottom material is a total of the laminated sheet. The thickness is 150μm or more and 200μm
It is characterized by the following.

Further, according to the invention described in claim 8, in the package according to any one of claims 1 to 7, the thickness of the cyclic polyolefin layer constituting the laminated sheet is in the range of 30 μm to 200 μm. Is characterized in that:

[0013] Furthermore, the package according to claim 9 is:
The package according to any one of claims 1 to 8, wherein the lid member is made of a sheet member in which an aluminum foil is bonded to a paper substrate, and the paper substrate corresponds to a storage portion of the bottom material. Is characterized in that a cut of a half cut is formed at the position.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory view showing a schematic sectional configuration of a package 1 according to one embodiment of the present invention. This package 1
As shown in the figure, basically, a bottom member 2 formed with at least one storage portion 4 in which a storage item 5 is stored,
And a lid member 3 bonded so as to cover the storage section 5.

The bottom material comprises a laminated sheet of a cyclic polyolefin layer and a polyethylene layer. The bottom material 2 constituting the illustrated package 1 is an intermediate layer 6 made of a cyclic polyolefin.
Is a laminated sheet having a three-layer structure in which outer layers 7 and 8 made of polyolefin are laminated on both side surfaces of the laminated sheet. By forming the intermediate layer 6 from a cyclic polyolefin having excellent water vapor barrier properties and having the three-layer structure as described above, the sheet formability by co-extrusion is improved and the formability of the storage section is also improved.

In order to impart desired flexibility to the bottom member 2, the total thickness is desirably 100 μm or more and 250 μm or less, and more desirably 150 μm or more and 200 μm or less. In addition, cyclic polyolefin,
From the viewpoint of moldability, those having a glass transition point of 100 ° C. or lower are desirable, and those having a glass transition point of 80 ° C. or lower are more preferable. Particularly, among them, a ring-opened polymer of a nobornene-based monomer or a hydrogenated product thereof can provide more excellent moldability. Further, the thickness of the cyclic polyolefin layer in the laminated sheet is desirably in the range of 30 μm to 60 μm in order to have a certain or more water vapor barrier property.

The storage section 4 is formed on these sheets by a vacuum forming method, and the shape, size, depth, number, arrangement, etc. may be designed according to the shape and usability of the storage object 5. Also, the vacuum forming method may be a general forming method,
It can be molded with the current PTP molding equipment.

On the other hand, the member used for the lid member 3 has a property of being softened by wetting in the body when humans or livestock accidentally swallows it, and when the article is stored or when the package is handled and not wet. Deformation and bending can be prevented, and appropriate rigidity for facilitating taking out of stored items is required, and is made of a sheet member mainly made of paper.

More specifically, a laminate obtained by laminating a barrier layer 11 composed of an aluminum foil, an aluminum vapor-deposited layer, or a vapor-deposited layer of an inorganic oxide such as silicon oxide or aluminum oxide on a paper base material 10 serving as a main component is appropriately used. Applied.

When the lid member having such a structure enters the body by mistake, the paper substrate softens due to the wetting of the paper substrate in the body, and the rigidity of the entire member is lost. Along with this, the entire package 1 is also flexible, and the possibility of damaging the inside of the body is reduced.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the package of the present invention will be described in detail with reference to embodiments.

<Example 1> A three-layer co-extrusion sheet molding apparatus was used to form a laminated sheet having a total thickness of 150 µm in which the intermediate layer 6 was a 40 µm cyclic polyolefin layer and the outer layers 7 and 8 on both sides were low-density polyethylene layers each having a thickness of 55 µm. The sheet was used to form a cylindrical storage portion 4 having a radius of 6 mm by vacuum forming using the sheet to obtain a bottom material 2. The number of storage sections 4 was set to 10 per sheet. On the other hand, a barrier layer 11 made of an aluminum foil having a thickness of 9 μm is attached to a paper base material 10 made of cup base paper having a basis weight of 230 g / m ² , and a heat seal lacquer layer 13 is coated on the barrier layer 11 side. The cover material 3 was used. Next, the storage item 5 was put in the storage portion 4 of the bottom member 2, and a lid member was bonded to the opening side of the bottom member 2 by heat sealing. Heat sealing condition is 140 ℃
2 seconds.

<Example 2> As a laminated sheet constituting a bottom material, an intermediate layer was a 60-μm cyclic polyolefin layer, outer layers on both sides were low-density polyethylene layers of 45 μm each, and a total thickness of 150 μm was used. Is Example 1
Under the same conditions as above, a package was obtained.

<Example 3> As a laminated sheet constituting a bottom material, an intermediate layer having a cyclic polyolefin layer of 20 μm, outer layers on both sides being polyethylene layers of 65 μm each, and a total thickness of 150 μm was used. Under the same conditions as in Example 1, a package was obtained.

Example 4 A three-layer co-extrusion sheet molding apparatus was used. The total thickness of the intermediate layer was a circular polyolefin layer of 60 μm and a polyethylene layer of 70 μm on both sides.
m, and a cylindrical tablet storage portion having a radius of 6 mm was formed using this sheet by vacuum forming to obtain a bottom material. The number of storage sections was 10 per sheet. The cyclic polyolefin used was a resin composed of a ring-opened polymer of a nobornene monomer and had a glass transition point of 70 ° C. On the other hand, a heat seal lacquer was coated on a base paper obtained by laminating an aluminum foil having a thickness of 9 μm on a base paper having a basis weight of 150 g / m ² , and this was used as a cover material. Next, the tablets were placed in the storage portion of the bottom material, and a lid material was stuck to the opening side of the bottom material by heat sealing to obtain a package containing tablets. The heat sealing conditions were 140 ° C. × 2 seconds.

Example 5 A package containing tablets under the same conditions as in Example 4 except that a nobornene-based cyclic polyolefin resin having a glass transition point of 96 ° C. was used as the cyclic polyolefin constituting the intermediate layer of the laminated sheet. I got

Example 6 A layer made of a nobornene-based cyclic polyolefin having a glass transition point of 70 ° C. has a thickness of 60 μm.
And a layer made of polyethylene on each side of the intermediate layer having a thickness of 45 μm and a total thickness of 150 μm.
A tablet-containing package was obtained under the same conditions as in Example 4 except that the laminated sheet of m was used.

Example 7 A layer made of a nobornene-based cyclic polyolefin having a glass transition point of 70 ° C. has a thickness of 60 μm.
And a layer made of polyethylene on both sides of the intermediate layer having a thickness of 95 μm, and a total thickness of 250 μm.
A tablet-containing package was obtained under the same conditions as in Example 4 except that the laminated sheet of m was used.

Example 8 A layer made of a nobornene-based cyclic polyolefin having a glass transition point of 70 ° C. has a thickness of 30 μm.
And a layer made of polyethylene on each side of the intermediate layer having a thickness of 85 μm, and a total thickness of 200 μm.
A tablet-containing package was obtained under the same conditions as in Example 4 except that the laminated sheet of m was used.

Comparative Example 1 A package was obtained under the same conditions as in Example 1 except that a polypropylene sheet having a thickness of 150 μm was used as a sheet constituting the bottom material.

Comparative Example 2 A package was obtained under the same conditions as in Example 1 except that a monolayer sheet of a cyclic polyolefin having a thickness of 150 μm was used as a sheet constituting the bottom material.

<Comparative Example 3> As a sheet constituting the bottom material, a single-layer sheet of polyvinyl chloride having a thickness of 250 μm was used.
An aluminum foil having a thickness of 20 μm was used as a sheet constituting the lid member, and the other conditions were the same as in Example 1 to obtain a package.

Comparative Example 4 A tablet-containing package according to a comparative example was obtained under the same conditions as in Example 4 except that a polypropylene sheet having a thickness of 200 μm was used as the bottom material.

Comparative Example 5 A tablet-containing package according to a comparative example was obtained under the same conditions as in Example 4 except that the intermediate layer of the laminated sheet was provided with a cyclic polyolefin having a glass transition point of 105 ° C.

Comparative Example 6 A tablet-containing package according to a comparative example was obtained under the same conditions as in Example 4 except that the interlayer of the laminated sheet was provided with a cyclic polyolefin having a glass transition point of 136 ° C.

Comparative Example 7 A layer made of a nobornene-based cyclic polyolefin having a glass transition point of 70 ° C. having a thickness of 60 μm
And a layer made of polyethylene on both sides of the intermediate layer, each having a thickness of 120 μm, and having a total thickness of 300 μm.
A tablet-containing package according to a comparative example was obtained under the same conditions as in Example 4 except that a laminated sheet of μm was used.

Comparative Example 8 A layer made of a nobornene-based cyclic polyolefin having a glass transition point of 70 ° C. has a thickness of 20 μm.
And a layer made of polyethylene on each side of the intermediate layer having a thickness of 90 μm, and a total thickness of 200 μm.
A tablet-containing package according to a comparative example was obtained under the same conditions as in Example 4 except that the laminated sheet of m was used.

<Comparative Example 9> A tablet-containing package according to a comparative example was obtained under the same conditions as in Example X except that a single-layered sheet of a cyclic polyolefin having a thickness of 200 was used as the bottom material.

Comparative Example 10 A tablet containing a comparative example was prepared under the same conditions as in Example X except that a 250-thick polyvinyl chloride sheet was used as the bottom material and a 20-thick aluminum foil was used as the lid material. A package was obtained.

Next, various evaluation results of the packages according to the examples and the comparative examples will be shown. Table 1 shows the results of the evaluation of the damage of the corners of the obtained package.

[0042]

[Table 1]

The evaluation method was based on visual observation of a state in which a 100-μm-thick polyethylene film was stretched with tension, and the film surface was pulled sideways while applying a force by applying a corner of the package to the film surface. As a result, the polyethylene film was torn in the package of Comparative Example 3, whereas the polyethylene film was not damaged in the packages of Examples 1 and 2.

Subsequently, the measurement results of the water vapor barrier properties are shown in Table 2.

[0045]

[Table 2]

Finally, the results of evaluation of the moldability of the storage section are shown in Table 3.
Shown in

[0047]

[Table 3]

As can be seen from the table, the packaging materials of Examples 1 and 2 have a bottom material of a laminated sheet of a cyclic polyolefin and polyethylene, which is smaller than that of a single-layer sheet of a cyclic polyolefin <Comparative Example 2>. Good moldability was shown.

[0049]

As described above, the present invention uses a laminate of cyclic polyolefin and polyolefin as the bottom material, and uses a sheet member mainly made of paper as the lid material. It is a package which has less moldability, is excellent in moldability of the storage portion, and is excellent in gas barrier properties, especially in water vapor barrier properties.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a cross-sectional configuration of an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Package body 2 Bottom material 3 Lid material 4 Storage part 5 Storage thing 6 Middle layer 7 Outer layer 8 Outer layer 10 Paper base material 11 Barrier layer 12 Notch

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E067 AA22 AB82 AC01 BA15C BA33B BB01C BB25B EA06 EB27 FA01 FB04 FC01 4F100 AB10E AB33E AK02A AK04B AK04C BA04 BA05 BA07 BA10B BA10C BA10D DG10D EH20 EH66 GB

Claims (9)

[Claims] 1. A bottom member having at least one storage portion for storing stored items, and a lid member attached to cover the storage portion of the bottom material so as to cover the storage portion. A package of a type in which the lid is pushed into the side to break a part of the lid material to take out the stored items, wherein the bottom material is a laminated sheet of a cyclic polyolefin layer and a polyethylene layer, and the lid material is a sheet mainly composed of paper. A package comprising a member. 2. The package according to claim 1, wherein the laminated sheet comprises an intermediate layer made of a cyclic polyolefin and outer layers made of polyethylene on both sides of the intermediate layer. 3. The package according to claim 1, wherein the cyclic polyolefin layer constituting the laminated sheet comprises a cyclic polyolefin having a glass transition point of 100 ° C. or lower. 4. The package according to claim 1, wherein the cyclic polyolefin layer constituting the laminated sheet comprises a cyclic polyolefin having a glass transition point of 80 ° C. or lower. 5. The method according to claim 1, wherein the cyclic polyolefin layer constituting the laminated sheet comprises a ring-opened polymer of a nobornene-based monomer or a hydrogenated product thereof.
The package according to any one of the preceding claims. 6. The laminated sheet of a cyclic polyolefin layer and a polyethylene layer constituting a bottom material has a total thickness of 100 μm or more and 25 μm or more.
The package according to any one of claims 1 to 5, wherein the thickness is 0 µm or less. 7. The laminated sheet of a cyclic polyolefin layer and a polyethylene layer constituting a bottom material has a total thickness of 150 μm or more and 20 μm or more.
The package according to any one of claims 1 to 5, wherein the thickness is 0 µm or less. 8. The package according to claim 1, wherein the thickness of the cyclic polyolefin layer constituting the laminated sheet is in a range of 30 μm to 60 μm. 9. The cover material is made of a sheet member in which an aluminum foil is bonded to a paper base material, and a half-cut notch is formed at a position of the paper base material corresponding to a storage portion of the bottom material. The package according to any one of claims 1 to 8, wherein: