JP2021138413A - Molded body and package - Google Patents

Abstract

To provide a molded body with a protruding molded part excellent at push-through properties and a package having the molded body.SOLUTION: A molded body of a resin film includes a protruding molded part that protrudes in the thickness direction of the resin film, the protruding molded part has a recess with an area S mm2 of an opening, and when the maximum load of the protruding molded part is PN, T1 represented by the following equation (1): T1=P/S is in the range of 1.2 N/mm2 or less.SELECTED DRAWING: Figure 1

Description

The present invention relates to molded articles and packages.

Foods, pharmaceuticals, etc. are generally packaged in a packaging body such as a packaging bag or a packaging container at the time of sale. Such a package is required to have various performances for protection of the contents and the like. Therefore, in some packages, a composite (multilayer) multilayer film molded product is used.
Further, in the packaging field of pharmaceuticals and foods, PTP (press-through package) is widely used for packaging solid preparations (medicines such as capsules and tablets, granular foods and the like).
As the PTP manufacturing apparatus, the manufacturing apparatus 200 as shown in FIG. 6 is generally used.
The manufacturing apparatus 200 includes a molding portion 210 for molding a film to obtain a molded body, an accommodating portion 220 for accommodating the molded body, and an adhesive portion 230 for adhering a cover film to the molded body.

As a method for producing PTP, for example, it can be produced using the production apparatus 200.
Specifically, the film is thermoformed by the molding portion 210 to produce a molded body having the protruding molded portion, and the molded body is formed into a roll having a plurality of recesses corresponding to the protruding molded portion such as the accommodating portion 220. A method of producing PTP by accommodating and adhering a cover film by an adhesive portion 230 can be mentioned.

The multilayer film used for the packaging body and the molded product thereof are required to have impact resistance and gas barrier properties in order to impart functions such as protection of the contents to the packaging body. For example, Patent Document 1 discloses a method of orienting crystals in a multilayer film by stretching a multilayer film made of a polymer material as a means for improving impact resistance and gas barrier properties. Then, a multilayer film (multilayer film molded product) having an improved suitable oxygen barrier property and a multilayer package using the same are disclosed.

Japanese Unexamined Patent Publication No. 2007-283569

However, in the multilayer film molded body disclosed in Patent Document 1, since the crystals in the multilayer film molded body are oriented, there is a problem that the impact resistance and the gas barrier property are excellent, but the push-through property is inferior. ..

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a molded body provided with a protruding molded body having excellent push-through property and a package body provided with the protruding molded body.

In order to solve the above problems, the present invention adopts the following configuration.
[1]. A molded body of a resin film, comprising a protruding molded portion that protrudes in the thickness direction of the resin film, the protruding molded portion ^{has a recess having an opening area of S mm 2} , and the maximum load of the protruding molded portion. When is PN, the following equation (1):
T1 = P / S ... (1)
A molded product in which T1 represented by is in ^{the range of 1.2 N / mm 2 or less.}
[2]. When the outer circumference of the opening of the protruding molded portion is L mm, the following formula (2):
T2 = P / L ... (2)
The molded article according to [1], wherein T2 represented by is in the range of less than 3.3 N / mm.
[3]. It is a molded body of a resin film and includes a protruding molded portion that protrudes in the thickness direction of the resin film. When PN is used, the following equation (2):
T2 = P / L ... (2)
A molded product in which T2 represented by is in the range of less than 3.3 N / mm.
[4]. The molded product comprises a base material layer, and the base material layer is selected from the group consisting of a cycloolefin polymer, a cycloolefin copolymer, polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride, and polychlorotrifluoroethylene 1. The molded product according to any one of [1] to [3], which comprises a seed or two or more kinds.
[5]. The molded product according to any one of [1] to [4], wherein the molded product has two or more layers and the number of layers is in the range of 2 to 5000.
[6]. The molded product according to any one of [1] to [5], wherein the molded product is for packaging a drug.
[7]. A package containing the molded product according to any one of [1] to [6].
[8]. The package according to [7], wherein the package is for packaging a drug.
[9]. The package according to [8], wherein the package is a press-through package.

According to the present invention, it is possible to provide a molded body provided with a protruding molded portion having excellent push-through property, and a package body provided with the molded body.

It is a perspective view which shows typically one Embodiment of the molded article which concerns on this invention. FIG. 5 is a cross-sectional perspective view of the molded product shown in FIG. 1 along the line I-I. It is an enlarged cross-sectional view of the projecting molded portion in one embodiment of the molded body according to the present invention, and shows a form in which the thickness of the side wall portion of the protruding molded portion is uniform. It is a perspective view which shows typically one Embodiment of the package which concerns on this invention. It is sectional drawing of the package shown in FIG. 4 in line II-II. It is a figure for demonstrating the method of manufacturing PTP.

Hereinafter, a molded body according to an embodiment to which the present invention is applied and a package body provided with the molded body will be described in detail. In addition, in the drawings used in the following description, in order to make the features easy to understand, the featured parts may be enlarged for convenience, and the dimensional ratio of each component may not be the same as the actual one. No.

As used herein, the term "push-through property" means the ease with which a protruding molded portion of a molded product can be pushed in.

<< Mold >>
An embodiment of a molded product according to the present invention will be described in detail with reference to FIGS. 1 and 2.

FIG. 1 is a perspective view schematically showing an embodiment of a molded product according to the present invention, and FIG. 2 is a cross-sectional perspective view of the molded product shown in FIG. 1 taken along the line I-I. As shown in FIGS. 1 and 2, the molded body 1 according to the embodiment of the present invention is a molded body of a resin film, and includes a protruding molded portion 2 protruding in the thickness direction of the resin film, and protrudes. When the molding portion 2 has ^{a recess having an area of Smm 2} of the opening 3 and the maximum load of the protruding molding portion 2 is PN, the following equation (1):
T1 = P / S ... (1)
T1 represented by is in the range of ^{1.2 N / mm 2 or less.} T1 is preferably at 1.1 N / mm ² or less, more preferably 1.0 N / mm ² or less, and more preferably 0.8N / mm ² or less.
When T1 is within the above range, the push-through property of the projecting molded portion 2 can be improved.

In addition, in this specification, "maximum load" means the maximum strength when the protruding molded part of a molded body is crushed.

The molded body 1 according to another embodiment of the present invention is a molded body of a resin film, which includes a protruding molded portion 2 protruding in the thickness direction of the resin film, and the protruding molded portion 2 is an opening portion 3. When a recess with an outer circumference of L mm is provided and the maximum load of the projecting molded portion 2 is PN, the following equation (2):
T2 = P / L ... (2)
T2 represented by is in the range of less than 3.3 N / mm. T2 is preferably 2.7 N / mm or less, more preferably 2.5 N / mm or less, and even more preferably 1.9 N / mm ^{2 or less.}
When T2 is within the above range, the push-through property of the projecting molded portion 2 can be improved.

For example, when T1 is in ^{the range of 1.2 N / mm 2} or less and T2 is in the range of less than 3.3 N / mm, the push-through property of the projecting molded portion 2 can be further improved.

The lower limit of T1 is not particularly limited. From the viewpoint of ensuring the rigidity of the molded product, T1 is ^{preferably 0.1 N / mm 2} or more.

The lower limit of T2 is not particularly limited. From the viewpoint of ensuring the rigidity of the molded product, T2 is preferably 0.4 N / mm or more.

The depth of the protrusion molded portion 2 may be any value, but is preferably 2.5 to 9 mm, more preferably 3 to 8 mm, and 3.5 to 7.5 mm. Is even more preferable.
When the depth of the overhanging molded portion 2 is not constant, the depth of the overhanging molded portion 2 is assumed to be the depth at the deepest position.

As will be described later, the maximum load of the projecting molded portion 2 can improve the push-through property as it becomes smaller, but specifically, it is preferably 5 to 200 N, and preferably 7.5 to 150 N. More preferably, it is more preferably 10 to 100 N.

As will be described later, the larger the diameter of the opening 3, the better the push-through property. Specifically, the diameter is preferably 5 to 15 mm, more preferably 6 to 14 mm, and 7 It is more preferably ~ 13 mm.

Area of the opening 3, as described later, it is possible to improve the push-through properties as large, specifically, is preferably 19～177Mm ^2, more preferably 28～154Mm ² , 38 to 133 mm ² , more preferably.

As will be described later, the longer the outer circumference of the opening 3 is, the more the push-through property can be improved. Specifically, the outer circumference is preferably 15 to 48 mm, more preferably 18 to 44 mm, and 21 It is more preferably ~ 41 mm.

The maximum load of the projecting molded portion 2 can be measured, for example, by the method described in the examples of the present specification. In this case, it is preferable to use a pressing plate having a diameter equal to or larger than the diameter of the opening of the protruding molded portion.

Next, a specific example of the method of reducing the maximum load of the projecting molded portion in the present embodiment will be described in detail with reference to FIG. 3, but the molded product according to the present invention is not limited to the following examples. No.

As shown in FIG. 3, the molded body 1 projects toward the plate portion 24 and one surface (sometimes referred to as “first surface” in the present specification) 1a side of the plate portion 24 in the thickness direction of the plate portion 24, and the other. It is provided with a protruding molded portion 2 that opens on the surface (sometimes referred to as a “second surface” in the present specification) 1b side. In this specification, one surface 1a in the thickness direction of the plate portion 24 and one surface 1a in the thickness direction of the molded body 1 are the same. Further, the other surface 1b in the thickness direction of the plate portion 24 and the other surface 1b in the thickness direction of the molded body 1 are the same.
Here, the plate portion 24 is a portion of the molded body 1 other than the projecting molded portion 2.
FIG. 1 shows a molded body 1 including 10 projecting molded portions 2, but the number of projecting molded portions 2 is not limited to this.

The protrusion molded portion 2 will be described in detail with reference to FIG.

As shown in FIG. 3, the projecting molded portion 2 includes a top wall portion 21, a side wall portion 22, and a corner portion 23.
The side wall portion 22 is formed in a tapered cylindrical shape protruding from the plate portion 24 toward one surface 1a. The top wall portion 21 is formed in a disk shape in the direction along the plate portion 24 on the tip side of the side wall portion 22 opposite to the plate portion 24.
The corner portion 23 is a bent portion of a boundary portion between the top wall portion 21 and the side wall portion 22.

In the projecting molded portion 2 shown in FIG. 3, the central portion (hereinafter, also referred to as the top wall central portion 21a) located near the extension of the axis of the side wall portion 22 has the maximum protruding height from the plate portion 24 in the molded body 1. It is curved like a dome.
The top wall central portion 21a is a central portion of the top wall portion 21 in the plane direction.
The side wall central portion 22a is a portion of the side wall portion 22 having an intermediate height protruding from the plate portion 24.
The lower part of the neck 22b is the end of the side wall portion 22 on the plate portion 24 side.

In the molded body 1 of the present embodiment, the thickness of the top wall central portion 21a is thicker or the same as the thickness of the side wall central portion 22a or the neck lower portion 22b, and the thickness of the top wall central portion 21a is , It is preferable that the thickness is larger than the thickness of the central portion 22a of the side wall or the lower portion 22b of the neck. As a result, the maximum load of the projecting molded portion 2 can be reduced, and the push-through property can be further improved.
The thickness can be measured with, for example, a digital indicator (Digimatic Indicator ID-C112 manufactured by Mitutoyo Co., Ltd.).

The thickness of the top wall portion 21 includes a form in which the thickness of the top wall portion 21 gradually decreases from the top wall portion 21a to the corner portion 23, a form in which the thickness gradually increases, a form in which the thickness is uniform, and the like.
The thickness of the side wall portion 22 includes a form in which the thickness gradually decreases from the end on the corner portion side to the lower part of the neck 22b, a form in which the thickness gradually increases, a form in which the thickness is uniform, and the like.

In the molded product 1 of the present embodiment, the thickness of the side wall portion 22 is preferably 10% to 100%, more preferably 15% to 95%, and 20% to 90% of the thickness of the plate portion 24. Is more preferable.
If it is within the above preferable range, the barrier property can be guaranteed.

The molded body 1 of FIG. 3 shows a protruding molded portion 2 having a dome-shaped top wall portion 21, but the outer shape of the protruding molded portion 2 is not limited to this, and has a circular flat plate-shaped top wall portion 21. It may be a truncated cone-shaped protruding molded portion 2 or the like. Further, the outer shape of the protruding molded portion 2 may be a polygonal shape such as a triangle, a quadrangle, a pentagon, or a hexagon when the molded body 1 is viewed from the side of the protruding molded portion 2 in a plan view, or may be long. It may have a circular shape or the like.

The opening of the protruding molded portion 2 may have a shape other than a circular shape according to the outer shape of the protruding molded portion 2. That is, the opening of the projecting molded portion 2 may have a polygonal shape such as a triangle, a quadrangle, a pentagon, or a hexagon, or an oval shape or the like.
As described above, when the opening of the protruding molded portion 2 has a shape other than a circular shape, the area and the outer circumference of the opening are both cases where the opening of the protruding molded portion 2 is circular as described above. It is preferable that the area and the outer circumference of the opening are the same. When the opening of the protrusion molding portion 2 has a shape other than a circle, the maximum value of the length of the line segment connecting any two points of the opening is the opening of the protrusion molding portion 2 as described above. May be the same as the diameter of the opening when is circular.

The thickness of the plate portion 24 (total thickness of the molded product 1) is preferably 20 to 750 μm, more preferably 50 to 600 μm, and even more preferably 100 to 500 μm.
When the thickness of the plate portion 24 is within the above-mentioned preferable range, the maximum load of the projecting molded portion 2 can be reduced and the push-through property can be further improved.

The number of layers of the plate portion 24 (the number of layers of the molded body 1) is 1 or 2 or more, and may be 2 to 100, but is preferably 2 to 5000, and more preferably 500 to 2500. preferable.
When the number of layers of the plate portion 24 (the number of layers of the molded body 1) is within the above-mentioned preferable range, the thickness of each layer becomes thin, and the push-through property can be further improved.
The number of layers of the plate portion 24 (the number of layers of the molded body 1) is, for example, one of 50 to 5000, 250 to 4500, 300 to 4000, 450 to 3500, 600 to 3000, 750 to 2500, and 750 to 2000. There may be.
By laminating in this way, the barrier property of the molded product can be ensured.

<Base material layer>
The molded body 1 may include a base material layer. Since the molded body 1 includes the base material layer, the moldability of the molded body 1 can be improved.
The fact that the molded body 1 includes the base material layer means that the resin film includes the base material layer, and the resin film includes both the base material layer and other layers. May be good.
For example, the molded product 1 may include both the barrier layer and the base material layer.

In the molded body 1, the base material layer is one or more selected from the group consisting of cycloolefin polymer, cycloolefin copolymer, polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride, and polychlorotrifluoroethylene. It may be included. Among the above resins, cycloolefin copolymers, polypropylene, polyvinyl chloride and the like are preferable from the viewpoint of improving the moldability of the molded product 1.

The content of the resin in the base material layer is preferably in the range of 20 to 100% by mass, more preferably in the range of 50 to 100% by mass, and preferably in the range of 60 to 100% by mass. More preferred.

When the content of the resin in the base material layer is within the above range, the moldability of the molded product 1 can be further improved.

The base material layer may contain a resin other than the above, an additive, or the like. These may be used individually by 1 type, or may be used in combination of 2 or more type.

Examples of the additive include antioxidants, antistatic agents, crystal nucleating agents, inorganic particles, organic particles, thickeners, thickeners, heat stabilizers, lubricants, infrared absorbers, ultraviolet absorbers and the like. Can be mentioned.

<Barrier layer>
The molded body 1 may include a barrier layer. Since the molded body 1 is provided with the barrier layer, the barrier property of the molded body 1 can be improved.
The fact that the molded body 1 includes a barrier layer means that the resin film includes a barrier layer, and the resin film may include both a barrier layer and other layers.

The barrier layer may contain one or more selected from the group consisting of cycloolefin polymers, cycloolefin copolymers, polypropylene, polyvinyl chloride, polyvinylidene chloride, and polychlorotrifluoroethylene. Among them, from the viewpoint of improving the barrier property of the molded product 1, cycloolefin polymer, cycloolefin copolymer, polypropylene, polyvinylidene chloride, polychlorotrifluoroethylene and the like are preferable.

The content of the resin in the barrier layer is preferably in the range of 20 to 100% by mass, more preferably in the range of 50 to 100% by mass, and further preferably in the range of 60 to 100% by mass. preferable.

When the content of the resin in the barrier layer is within the above range, the barrier property of the molded product 1 can be further improved.

The barrier layer may contain a resin other than the above, an additive, or the like. These may be used individually by 1 type, or may be used in combination of 2 or more type.

Examples of the additive include antioxidants, antistatic agents, crystal nucleating agents, inorganic particles, organic particles, thickeners, thickeners, heat stabilizers, lubricants, infrared absorbers, ultraviolet absorbers and the like. Can be mentioned.

The moisture permeability of the molded product 1 is ^{preferably 3.0 g / m 2} · day or less, ^{more preferably 2.0 g / m 2} · day or less, and 1.0 g / m ² · day or less. Is even more preferable.

By setting the moisture permeability of the molded body 1 within the above range, the barrier property can be further improved.

The moisture permeation can be obtained, for example, by measuring the amount of water vapor permeation of the molded product of the present embodiment by a known method.

<Other layers>
The molded product 1 may include another layer that does not fall under any of the barrier layer and the base material layer, as long as the effects of the present invention are not impaired. The other layer is not particularly limited and may be arbitrarily selected depending on the intended purpose.
The fact that the molded body 1 includes the other layer means the same as in the case of the barrier layer and the base material layer described above.

For example, in the molded product 1 including the barrier layer, the base material layer, and the other layer, the other layer may be provided on the surface of the barrier layer opposite to the base material layer. , It may be provided between the barrier layer and the base material layer, or may be provided on the surface of the base material layer opposite to the barrier layer.

The molded product 1 is suitable for use in various applications that require good push-through properties, and is suitable as, for example, a packaging bag or a packaging container for packaging foods, pharmaceuticals, etc., but for packaging chemicals. More preferably.

<< Manufacturing method of molded product >>
The molded product of this embodiment can be manufactured by molding a resin film described later.
The molding method is not particularly limited, and examples thereof include compression molding (plug molding, plug-assisted pneumatic molding, etc.), blow molding, and the like.

The molding temperature at the time of producing the molded product is preferably 90 ° C. to 150 ° C., more preferably 100 ° C. to 145 ° C.

(Manufacturing method of resin film)
Next, an example of the above-mentioned method for producing a resin film will be described.
The method for producing the resin film described above is not particularly limited, but is a coextrusion T-die method such as a feed block method or a multi-manifold method for melt-extruding a resin or the like as a raw material by several extruders, or air cooling. Examples thereof include a formula or water-cooled coextrusion inflation method and a laminating method. Among them, the method of forming a film by the coextrusion T-die method is particularly preferable because it is excellent in controlling the thickness of each layer.

Subsequent steps include a dry laminating method, an extrusion laminating method, a hot melt laminating method, a wet laminating method, a thermal (heat) laminating method, etc., in which a single layer sheet or film forming each layer is bonded together using an appropriate adhesive. And those methods are used in combination. Further, it may be laminated by a coating method.

<< Packaging >>
The package of the present embodiment includes the molded body 1 of the above-described embodiment.
Since the package of the present embodiment includes the molded body 1 of the present embodiment described above, the push-through property of the protruding molded portion is excellent.

FIG. 4 is a perspective view schematically showing an embodiment of the package according to the present invention, and FIG. 5 is a cross-sectional perspective view of the package shown in FIG. 4 taken along line II-II.
In the drawings after FIG. 4, the same components as those shown in the already explained figures are designated by the same reference numerals as in the case of the already explained figures, and detailed description thereof will be omitted.

The package 10 shown in FIGS. 4 and 5 includes a molded body 1 and a cover film 101. Then, the molded body 1 is formed with a protruding molded portion 2 that constitutes the solid agent accommodating portion 10a of the package body 10.
The package 10 is a PTP (packaging container) as a blister pack, and the solid agent 102 can be hermetically stored in the solid agent accommodating portion 10a.

The other surface 1b of the molded body 1 is adhered to one surface 101a of the cover film 101. However, the molded body 1 projects toward one surface 1a in a part of the region, and the second surface 1b of the projecting molded portion 2 is adhered to the first surface 101a of the cover film 101. Instead, the solid agent accommodating portion 10a is formed by the second surface 1b of the molded body 1 and the first surface 101a of the cover film 101.

A slit 10b is formed in the molded body 1 and the cover film 101. The slit 10b has an arbitrary configuration and does not necessarily have to be formed, but by forming the slit 10b, the package 10 is formed for each specific number of the solid agent 102 contained in the solid agent accommodating portion 10a. Since it can be easily divided, the convenience of the package 10 is improved.

Here, the projecting molded portion 2 having the dome-shaped top wall portion 21 is shown as the packaging body 10, but the outer shape of the projecting molded portion 2 is not limited to this, and the shape of the solid agent 102 to be stored is not limited to this. It can be selected arbitrarily according to. For example, it may be a truncated cone-shaped protruding molded portion 2 or the like having a circular flat plate-shaped top wall portion 21. Further, the outer shape of the protruding molded portion 2 may be a polygonal shape such as a triangle, a quadrangle, a pentagon, or a hexagon when the molded body 1 is viewed from the side of the protruding molded portion 2 in a plan view, or may be long. It may have a circular shape or the like.
Examples of the solid agent 102 include chemicals such as capsules and tablets, granular foods, and the like.

Further, here, the package 10 includes 10 projecting molded portions 2, but the number of projecting molded portions 2 is not limited to this.

Examples of the material of the cover film 101 include aluminum and the like.

The package of the present embodiment is suitable for use in various applications requiring good push-through properties, and is suitable as, for example, a packaging bag or a packaging container for packaging foods, pharmaceuticals, etc. More preferably for packaging. The package may be a press-through package.

<< Manufacturing method of packaging >>
The package of the present embodiment can be manufactured by using the above-mentioned molded body and laminating the molded bodies with each other or by adhering the molded bodies to another film or the like so as to form a target solid agent accommodating portion.

For example, the package 10 shown in FIGS. 4 and 5 can be manufactured using a known PTP packaging machine.
More specifically, first, a projecting molded portion 2 is formed on a resin film by vacuum forming or the like by plug molding, air assist plug molding, pressure air molding, plug assist pressure air molding, or the like to produce a molded body 1.
Next, the protruding molded portion 2 of the molded body 1 is filled with the solid agent 102, which is an object to be preserved, and then the cover film 101 is overlapped with the molded body 1 to bond the molded body 1 and the cover film 101.
Next, if necessary, the slit 10b is formed in the molded body 1 and the cover film 101 by using a sewing machine blade, a half-cut blade, or the like.
From the above, the package body 10 is obtained.

Since the package 10 of the present embodiment includes the molded body 1 described above, the push-through property of the protruding molded portion is excellent.

The molded body 1 shown in FIG. 1 is a molded body of a single-layer film, but the molded body of the present embodiment may be a molded body of a multilayer film.

Even when the molded body of the present embodiment is a molded body of a multilayer film, the thickness of the central portion of the top wall of the molded body of the multilayer film is the central portion of the side wall or the lower part of the neck, similarly to the molded body of the single-layer film described above. It is preferable that the thickness of the central part of the top wall is thicker than the thickness of the central part of the side wall or the lower part of the neck. As a result, the molded product of the present embodiment has excellent push-through property.
The thickness can be measured with, for example, a digital indicator (Digimatic Indicator ID-C112 manufactured by Mitutoyo Co., Ltd.).

The packaging body 10 shown in FIGS. 4 and 5 is a packaging body including the above-mentioned molded body, but the packaging body of the present embodiment may be a packaging body including the above-mentioned multilayer film molded body.

Hereinafter, the present invention will be described in more detail with reference to specific examples. However, the present invention is not limited to the examples shown below.

<Manufacturing of multilayer film>
[Example 1]
Cyclic olefin resin ("ZEONEX5000" manufactured by Nippon Zeon, sometimes referred to as COP) is used as the first resin, and styrene elastomer ("SIBSTAR (registered trademark)" manufactured by Kaneka Co., Ltd., styrene-isobutylene-" is used as the second resin. (Styrene block copolymer, sometimes referred to as SIBS) were prepared respectively. Then, using an extruder (manufactured by Sun NT Co., Ltd., "SNT40-28 model number"), the first resin and the second resin are each in a molten state at 250 ° C., and a feed block is used. It has a structure in which a cyclic olefin-based resin layer that finally becomes an unstretched first film layer and a styrene-based elastomer layer that finally becomes an unstretched second film layer are alternately and repeatedly laminated. The two outermost layers are both cyclic olefin resin layers, and a five-layer molten laminate composed of the cyclic olefin resin layer of three layers and the styrene elastomer layer of two layers (the first lamination described above). Film) was produced.
Next, using a multiplier, the obtained 5-layer molten laminate was cut into two pieces, and these two molten laminates after cutting were further laminated to form a 9-layer molten laminate (the above-mentioned first). 2 laminated films) were produced.
Next, the obtained 9-layer molten laminate is stretched and expanded in a direction parallel to the surface thereof, and after this expansion is performed in the same manner as in the case of the 5-layer molten laminate (first laminated film). The 9-layer molten laminate was cut and laminated to prepare a 17-layer molten laminate (the above-mentioned third laminated film).
After that, by repeating the expansion, cutting and laminating of the molten laminate by the same procedure, the unstretched first film layer and the unstretched second film layer are alternately and repeatedly laminated. A 2049 barrier layer composed of 1025 layers of the first film layer and 1024 layers of the second film layer was prepared.

Next, polypropylene (“E122V” made of prime polymer) was melted, and the melted resin was melt-extruded into another feed block by several extruders different from the above to form a film (outer layer) containing polypropylene.

Next, the outer layer obtained above was laminated on both sides of the barrier layer of 2049 layer to prepare a molten laminate of 2051 layer. Further, the multilayer film of Example 1 was produced by co-extruding this fused deposition body using a die.

The thickness of the obtained multilayer film was 300 μm, of which the outer layer of one layer was 30 μm and the barrier layer was 240 μm. That is, the number of layers of the first film layer was 1025, and the average thickness of the first film layer per layer was 0.14 μm. The number of layers of the second film layer was 1024, and the average thickness of the second film layer per layer was 0.10 μm.

[Examples 2 and 3]
As the first resin, high-density polyethylene (“3300F” manufactured by Prime Polymer Co., Ltd., sometimes referred to as HDPE) is used instead of the cyclic olefin resin (“ZEONEX5000” manufactured by Nippon Zeon), and styrene as the second resin. Instead of based elastomer ("SIBSTAR (registered trademark)" manufactured by Kaneka Co., Ltd., styrene-isobutylene-styrene block copolymer, sometimes referred to as SIBS), polypropylene ("E122V" manufactured by Prime Polymer Co., Ltd., sometimes referred to as PP) may be referred to. The multilayer films of Examples 2 and 3 were prepared in the same manner as in Example 1 except that (there is).

The thickness of the obtained multilayer film was 300 μm, of which the outer layer of one layer was 30 μm and the barrier layer was 240 μm. That is, the number of layers of the first film layer was 1025, and the average thickness of the first film layer per layer was 0.14 μm. The number of layers of the second film layer was 1024, and the average thickness of the second film layer per layer was 0.10 μm.

[Example 4]
As the first resin, high-density polyethylene ("3300F" manufactured by Prime Polymer Co., Ltd., sometimes referred to as HDPE) is used, and as the second resin, polypropylene ("E122V" manufactured by Prime Polymer Co., Ltd., sometimes referred to as PP) is used. We prepared each. Then, using an extruder (manufactured by SNT Co., Ltd., "SNT40-28 model number"), the first resin and the second resin are each in a molten state at 250 ° C., and a feed block is used. The outermost layer has a structure in which a high-density polyethylene layer that finally becomes an unstretched first film layer and a polypropylene layer that finally becomes an unstretched second film layer are alternately and repeatedly laminated. Both of the two layers were high-density polyethylene layers, and a three-layer barrier layer composed of the two high-density polyethylene layers and the polypropylene layer was prepared.

Next, polypropylene (“E122V” manufactured by Prime Polymer Co., Ltd.) is melted, and the melted resin is melt-extruded into another feed block by several extruders different from the above to form a film (outer layer) containing polypropylene. bottom.

Next, the outer layers obtained above were laminated on both sides of the three barrier layers to prepare a five-layer molten laminate. Further, the multilayer film of Example 4 was produced by co-extruding this fused deposition body using a die.
The thickness of the obtained multilayer film was 300 μm, of which the outer layer of one layer was 30 μm and the barrier layer was 240 μm. That is, the number of layers of the first film layer was 2, and the average thickness of the first film layer per layer was 72 μm. The number of layers of the second film layer was 1, and the average thickness of the second film layer per layer was 96 μm.

[Example 5]
Polychlorotrifluoroethylene (manufactured by Honeywell, product number: Aclar UltraRx 2000) was prepared as the resin film used for the barrier layer, and polyvinyl chloride (manufactured by Sumitomo Bakelite Co., Ltd., product number:) was prepared as the resin film used for the base material layer. VSS-F120) was prepared, and the barrier layer and the base material layer were dry-laminated in this order to prepare the multilayer film of Example 5.
The thickness of the obtained two-layer structure multilayer film was 251 μm, of which the thickness of the polyvinyl chloride layer was 200 μm and the thickness of the polychlorotrifluoroethylene layer was 51 μm.

<Manufacturing of single layer film>
[Examples 6 and 7]
By extrusion molding polypropylene (“E122V” manufactured by Prime Polymer Co., Ltd., sometimes referred to as PP), single-layer films of Examples 6 and 7 made of unstretched polypropylene having a single-layer structure were produced.
The thickness of the obtained monolayer film was 300 μm.

[Comparative Example 1]
Polychlorotrifluoroethylene (manufactured by Honeywell, product number: Aclar UltraRx 2000) was prepared as the resin film used for the barrier layer, and polyvinyl chloride (manufactured by Sumitomo Bakelite Co., Ltd., product number:) was prepared as the resin film used for the base material layer. VSS-F120) was prepared, and the barrier layer and the base material layer were dry-laminated in this order to prepare a multilayer film of Comparative Example 1.
The thickness of the obtained two-layer structure multilayer film was 301 μm, of which the thickness of the polyvinyl chloride layer was 250 μm and the thickness of the polychlorotrifluoroethylene layer was 51 μm.

<Evaluation of multilayer film and single-layer film>
The following items were evaluated for the multilayer film and the single layer film obtained above by the following method. The results are shown in Table 1.

<Manufacturing of molded products>
[Examples 1 to 7, Comparative Example 1]
A molded product was produced using the resin film obtained above.
Specifically, using a blister packaging machine (“FBP-300E” manufactured by CKD), five protruding molded parts having circular openings protruding in the thickness direction are formed in the MD direction by five in the TD direction. A molded body having two pieces each (10 pieces in total) was produced. The molded bodies of Examples 1 to 7 and Comparative Example 1 were manufactured so that the diameter of the opening of the overhanging molded portion and the depth of the overhanging molded portion had values as shown in Table 1.

<Maximum load>
An extrusion jig provided with a pressing plate having a diameter of 10 mm and a shaft portion is attached to a compression tester (leometer CR-3000EX-L), and under compression conditions of 50 mm / min, each of Examples 1 to 5 and Comparative Example 1 is used. The protruding molded portion of the molded body was pushed vertically with the extrusion jig, and the compressive load until the protruding molded portion was completely crushed was measured, and the maximum value was taken as the maximum load. The maximum load of each of the five projecting molded parts was measured, and the average value is shown in Table 1.

<Push-through property>
The push-through property of the projecting part was evaluated by a sensory test according to the following criteria.
⊚: The convex portion of the molded body can be easily crushed.
〇: The convex part of the molded body can be crushed by devising the pressing method.
X: The convex portion of the molded body cannot be crushed unless a strong force is applied.

As shown in Table 1, the molded products of Examples 1 to 7 were all excellent in push-through property of the protruding molded portion as compared with the molded products of Comparative Example 1.

From the above, it can be confirmed that the molded product of the present embodiment includes a protruding molded portion having excellent push-through property.

The present invention can be used for packaging used for storage of foods, pharmaceuticals and the like.

1 ... Molded body 2 ... Protruding molded part 3 ... Opening 21 ... Top wall part 21a ... Top wall center part 22 ... Side wall part 22a ... Side wall center part 22b ...・ Lower neck 23 ・ ・ ・ Corner part 24 ・ ・ ・ Plate part 10 ・ ・ ・ Package 10a ・ ・ ・ Solid agent storage part 10b ・ ・ ・ Slit 101 ・ ・ ・ Cover film 101a ・ ・ ・ First surface of cover film 1a ・ ・ ・ One surface in the thickness direction of the plate part 1b ・ ・ ・ The other surface in the thickness direction of the plate part 102 ・ ・ ・ Solid agent 200 ・ ・ ・ Manufacturing equipment 210 ・ ・ ・ Molding part 220 ・ ・ ・ Accommodating part 230 ・ ・ ・ Adhesive part

Claims (9)

It is a molded body of resin film
When the protruding molded portion is provided in the thickness direction of the resin film, the protruding molded portion ^{has a recess having an opening area of S mm 2} , and the maximum load of the protruding molded portion is PN, the following equation ( 1):
T1 = P / S ... (1)
A molded product in which T1 represented by is in ^{the range of 1.2 N / mm 2 or less.} When the outer circumference of the opening of the protruding molded portion is L mm, the following formula (2):
T2 = P / L ... (2)
The molded article according to claim 1, wherein T2 represented by is in the range of less than 3.3 N / mm. It is a molded body of resin film
When the protruding molded portion is provided in the thickness direction of the resin film, the protruding molded portion has a recess having an outer circumference L mm of the opening, and the maximum load of the protruding molded portion is PN, the following equation (2) ):
T2 = P / L ... (2)
A molded product in which T2 represented by is in the range of less than 3.3 N / mm. The molded product comprises a base material layer, and the base material layer is selected from the group consisting of a cycloolefin polymer, a cycloolefin copolymer, polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride, and polychlorotrifluoroethylene 1. The molded product according to any one of claims 1 to 3, which comprises a seed or two or more kinds. The molded product according to any one of claims 1 to 4, wherein the molded product has two or more layers and the number of layers is in the range of 2 to 5000. The molded product according to any one of claims 1 to 5, wherein the molded product is for packaging a drug. A package containing the molded product according to any one of claims 1 to 6. The package according to claim 7, wherein the package is for packaging a drug. The package according to claim 8, wherein the package is a press-through package.

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