JP2022163202A - strip package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a strip package capable of easily breaking through the lid material and taking out the containment, in the same manner as PTP packing, without deformation or collapsing of the containment at that time requiring no strong force when removing the containment.

SOLUTION: A strip package 10 has a configuration in which: packaging materials 11,12 are arranged on both sides of a containment 16; a plurality of containment chambers 15 that are surrounded by a sealing portion 14, in which the packaging materials 11,12 are sealed on the surroundings of the containment 16, are formed; and each of the containment 16 is individually packaged one by one in each of the containment chambers 15. The packaging material 12 on one side of the containment 10 is made of metal foil, and the packaging material 11 on the opposite side is made of a laminated film 11 having the total thickness of less than 150 μm, including at least a substrate layer and a sealant layer to be sealed in the sealing portion 14. The laminated film 11 has a molded portion 13 formed into a shape capable of containing the containment 16 in the containment chamber 15. A depth d of the molded portion 13 is 1 to 6 mm, and a width w of the molded portion 13 is 10 to 30 mm.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2023,JPO&INPIT

Description

The present invention relates to a strip package, more specifically, a strip package mainly for packaging tablets such as pharmaceuticals, which is easy to open when taking out the contents and prevents the contents from being deformed or crushed. It relates to a strip package that does.

2. Description of the Related Art Conventionally, packaging forms called strip packaging or PTP (Press Through Package) have been mainly adopted for individual packaging of tablets, capsules, etc. such as pharmaceuticals. PTP uses a relatively thick plastic sheet for the material on the side that forms the pocket for storing tablets, etc., and uses a thin laminated material mainly made of aluminum foil for the lid material that seals the pocket opening. there is For this reason, the PTP package has rigidity and is excellent in protecting contents such as tablets. You can break through the material and take out the contents.

On the other hand, in strip packaging, the packaging material is generally a laminated film that is thinner than PTP packaging, and has lower rigidity and is easily deformed than PTP packaging. For this reason, as a method of opening the strip package when taking out the contents, for example, a notch, a group of fine scratches, or a jagged cut edge is provided at the outer end of the surrounding heat-sealed part, and the stack is laminated from there. A method of opening by tearing the film was adopted. In this case, the opening itself is relatively easy, but the opening tends to be large, and the tearing position is difficult to stabilize, so there is a problem that contents such as tablets may pop out, become dirty, or be lost.

As a solution to this problem, strip packaging has been proposed in which the contents can be easily taken out by pushing out the contents from the outside of the packaging film with a fingertip instead of tearing the film to take out the contents. (See Patent Documents 1 and 2).

Registered Utility Model No. 3035529 Japanese Patent Application Laid-Open No. 2008-201437

The film for strip packaging described in Patent Document 1 has a large number of holes on the entire surface of the film except for the sealant layer, so it is easy to break through the film when taking out the contents such as tablets. There was a problem that the decrease in moisture resistance as a large amount.
In addition, since the strip package described in Patent Document 2 is provided with a half-cut line at a position overlapping the contents, it is necessary to align the contents with the position of the half-cut line and push out the contents. For this reason, depending on the method of pushing out, it is difficult to take out the contents, and there is a possibility that the contents may be crushed, chipped, or deformed.

The present invention has been made to solve the above-mentioned problems, and its object is to easily break through the lid material in a strip package for packaging tablets such as pharmaceuticals, as in PTP packaging. To provide a strip packaging body from which a contained object can be taken out without causing deformation or crushing of the contained object at that time, and requiring no strong force when taking out the object.

The above problems can be solved by the present invention described below.
That is, in a first invention, packaging materials are arranged on both sides of a contained object, and a plurality of containing chambers surrounded by a sealing portion formed by sealing the packaging material around the containing object are formed, and each containing chamber has a A strip packaging body in which the contents are individually wrapped one by one, wherein the packaging material on one side of the contents is made of metal foil, and the packaging material on the opposite side of the packaging material on the one side is at least a base. It is composed of a laminated film including a material layer and a sealant layer sealed at the sealing portion, and the laminated film has a molded portion formed into a shape that can accommodate the contents in the storage chamber. to provide a strip package.

In the second invention, the shaping portion has a convex shape.
In the third invention, the molded portion is formed by pressure forming, vacuum forming, or deep drawing forming.
In the fourth invention, the metal foil constituting the packaging material on one side has a heat sealing agent on the side to be sealed with the laminated film.
In the fifth invention, the width W of the molded portion is in the range of W×0.01≦d≦W×0.50 with respect to the depth d of the molded portion.

According to the present invention, the contents can be easily taken out by breaking through the metal foil in the same manner as PTP packaging. A strip package can be provided which is not required.

1 is a cross-sectional view showing an example of a strip package of the present invention; FIG. It is a cross-sectional view showing an example of a laminated film. It is a sectional view showing an example of metal foil.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings.
FIG. 1 is a cross-sectional view showing one embodiment of the strip package of the present invention. FIG. 2 is a cross-sectional view showing an example of a laminated film that serves as one packaging material. FIG. 3 is a cross-sectional view showing an example of a metal foil that serves as the other packaging material. It should be noted that the present invention is not limited to the contents of these drawings as long as the gist thereof is not exceeded.

As shown in FIG. 1, the strip package 10 of the present embodiment is a package in which an object 16 is sandwiched between packaging materials 11 and 12 on both sides, and the periphery of each individual object 16 is sealed with a seal portion 14. is. A plurality of storage chambers 15 for storing objects 16 are arranged at predetermined intervals. Although not particularly shown, in a plan view of the strip package 10, a plurality of storage chambers 15 may be arranged vertically and horizontally.

The contained object 16 is, for example, a solid object such as a tablet or a capsule. The seal portion 14 defines a storage chamber 15 in which each object 16 is stored. Each storage chamber 15 stores one storage object 16 . Even if the cap can be removed from the body like a hard capsule, the number of objects to be contained 16 is one as long as the unity is maintained in the containing chamber 15 .

The planar shape of the storage chamber 15 is not particularly limited, and examples thereof include circular, elliptical, quadrangular, hexagonal, and polygonal shapes. The planar shape of the containing chamber 15 may be matched to the contour shape of the contained object 16 so as to be substantially similar.

The laminated film 11 includes at least a base layer 11c and a sealant layer 11a sealed at the sealing portion 14. As shown in FIG. The laminated film 11 may be composed of two layers, the substrate layer 11c and the sealant layer 11a. An intermediate layer such as a metal foil 11b may be laminated between the sealant layer 11a and the base material layer 11c to form three or more layers.

As the base material layer 11c, a biaxially oriented polyester film such as a biaxially oriented polyethylene terephthalate (PET) film, a biaxially oriented polyethylene naphthalate (PEN) film, a biaxially oriented polypropylene (PP) film, a biaxially oriented nylon (Ny ) film can be used as the base film. In addition, base materials such as moisture-proof cellophane, paper, and synthetic paper can be used for the base material layer 11c.

The sealant layer 11 a serves as a sealing surface when forming the sealing portion 14 of the package, and contacts the contents 16 in the storage chamber 15 . For example, after applying an anchor coat layer to the mating surface of the base layer 11c side, a method of extrusion laminating a sealant resin, a method of sand laminating a sealant resin film, or a method of sand laminating a sealant resin film, or an adhesive on the mating surface of the base layer 11c side It can be formed by a dry lamination method or the like in which a sealant resin film is laminated after coating a layer.

Examples of the sealant resin used in the sealant layer 11a include low-density polyethylene (LDPE) obtained by a high-pressure method, linear low-density polyethylene (LLDPE), and ethylene-α polymerized using a single-site catalyst. · Polyethylene (PE) resins such as olefin copolymers, ethylene-methacrylic acid copolymers, ethylene-acrylic acid copolymers, and ionomers can be mentioned. A polypropylene (PP)-based resin can also be used as the sealant resin. The thickness of the sealant layer 11a is preferably in the range of 5-50 μm, more preferably in the range of 20-40 μm.

Examples of the metal foil 11b laminated on the laminated film 11 include aluminum foil and aluminum alloy foil. A resin layer such as polyethylene or acid-modified polyethylene may be provided between the metal foil 11b and the base layer 11c.

Since the laminated film 11 constituting the strip package 10 has a structure in which the base material layer 11c on the outside and the sealant layer 11a of the sealant layer on the inside are laminated in order, various mechanical strengths and printing properties required by the base material layer 11c are obtained. aptitude is given. When light shielding properties, water vapor, and oxygen barrier properties are required due to the properties of the object 16, excellent gas barrier properties, moisture resistance, and light shielding properties are imparted by arranging a metal foil 11b such as an aluminum foil in the intermediate layer. and the preservability of the contained object 16 is enhanced. Also, the sealant layer 11a provides excellent heat-sealing properties.

Of the packaging materials 11 and 12 arranged on both sides of the container 16, the packaging material 12 on one side is made of metal foil. Specifically, as shown in FIG. 3, one side of the metal foil 12a may have a heat sealing agent 12b. In this case, the adhesive force of the seal portion 14 can be increased by heat-sealing the sealant layer 11a with the heat-sealing agent 12b facing the sealant layer 11a. If the sealant resin forming the sealant layer 11a is a resin such as an acid-modified resin that has high adhesiveness to the metal foil 12a, the heat sealing agent 12b may be omitted.

Since the packaging material 12 on one side is made of the metal foil 12a, the contents 16 can be easily taken out by breaking through the metal foil 12a as in PTP packaging. In addition, it is possible to provide a strip package that does not cause deformation or crushing of the contents 16 when taken out, and does not require a strong force when taken out. Although the thickness of the metal foil 12a is not particularly limited, it may be 20 to 40 μm, for example.

Examples of the metal foil 12a laminated on the packaging material 12 on one side include aluminum foil and aluminum alloy foil. Since the metal foil 12a is easy to break through, there is no need to provide holes, half-cut lines, etc. as described in Patent Documents 1 and 2. When the heat-sealing agent 12b is provided on the metal foil 12a, the thickness of the heat-sealing agent layer is preferably thin enough not to impair the ability to penetrate the metal foil 12a. The thickness of the heat sealing agent 12b may be, for example, 10 μm or less, about 1 to 2 μm.

The heat sealing agent 12b may be provided in a pattern only at the position corresponding to the sealing portion 14, or may be applied to the entire surface of the metal foil 12a including the position corresponding to the storage chamber 15. FIG. As the heat sealing agent 12b, an adhesive resin such as polyethylene or acid-modified polyethylene can be used. A coating liquid in which an adhesive resin is dispersed in a solvent or the like may be used to apply the heat sealing agent 12b.

The laminated film 11 has a molding portion 13 molded into a shape that can accommodate the object 16 in the storage chamber 15 . As a result, the packaging material 12 on one side is composed of the metal foil 12a that can be easily broken through, and even if the contained object 16 comes into contact with the packaging material 12 on one side due to vibration or the like during storage or transportation, the metal foil 12a will not be torn. becomes difficult. From this point of view, the depth d of the molded portion 13 is preferably equal to or greater than the thickness t of the stored object 16, where d is the depth of the molded portion 13 and t is the thickness of the stored object 16. The depth d of the molded portion 13 is, for example, 3 to 6 mm.

The total thickness of the laminated film 11 on which the molded portion 13 is formed is made thinner than the sheet on which the pocket is molded in conventional PTP packaging. Specifically, the total thickness of the laminated film 11 is less than 150 μm, for example, about 80 μm, about 100 μm, about 120 μm, and the like. Since the laminated film 11 is thin, its rigidity is lower than that of sheets used in PTP packaging, and the object 16 can be easily pushed out. Moreover, even when the strip package 10 is cut into one or a small number of storage chambers 15, the cut ends of the laminated film 11 are soft and can be prevented from being damaged even if they come into contact with the human body.

A width W of the molded portion 13 is larger than a diameter D of the container 16 . Here, the width W and diameter D are the maximum dimensions along the surface of the packaging material 12 on one side. If the planar shape is circular, it corresponds to the diameter of the circle. When the plane shape is a rectangle (quadrilateral), it is generally the length of the diagonal line. For example, when the diameter D of the contained object 16 is 5 to 8 mm, the width W of the molded portion 13 is about 15 to 25 mm.

When the width W of the molding portion 13 is sufficiently large with respect to the diameter D of the object 16, heat affects the object 16 when the sealing portion 14 is heat-sealed after the object 16 is stored in the storage chamber 15. It is preferable because it becomes difficult to For example, the width W may be twice or more the diameter D. Since the objects 16 are individually wrapped for each storage chamber 15, vibration and collision of the objects 16 in the storage chamber 15 are suppressed.

With respect to the depth d of the molded portion 13, the width W of the molded portion 13 is preferably in the range of W×0.01≦d≦W×0.50, and W×0.03≦d≦W× A range of 0.45 is more preferable, and a range of W×0.05≦d≦W×0.40 is even more preferable. For example, when the depth d of the molded portion 13 is about 1 to 6 mm, more preferably about 3 to 6 mm, the width W of the molded portion 13 is preferably about 10 to 30 mm, more preferably about 15 to 25 mm. If the width W of the molded portion 13 is large, it is difficult to reduce the size even if the strip package 10 is cut into the storage chambers 15 at the sealing portion 14, so loss or accidental ingestion can be suppressed.

Formed portion 13 can be formed by pressure forming, vacuum forming or deep drawing. The laminated film 11 can maintain its shape even when the object 16 is not accommodated in the forming portion 13 due to plastic deformation of the sealant layer 11a, the metal foil 11b, the base material layer 11c, and the like. The shape of the molded portion 13 is preferably convex such that the vertical distance from the packaging material 12 on one side increases as it moves away from the sealing portion 14 . A specific shape of the molding portion 13 is preferably a hemispherical shape or a shape that is part of a spherical surface.

In the case of pressure molding, a mold is provided on one side of the laminated film 11, and the opposite side of the mold is pressed to bring the laminated film 11 into close contact with the surface of the mold, thereby forming the molded portion 13. In the case of vacuum forming, a mold is provided on one side of the laminated film 11, and the inner side of the mold is depressurized to bring the laminated film 11 into close contact with the surface of the mold, thereby forming the molded portion 13. In the case of deep drawing, a convex mold is provided on one side of the laminated film 11 and a concave mold is provided on the opposite side. The laminated film 11 can be deformed by .

In either molding method, the laminated film 11 is heated before and during molding of the molded portion 13 so that the laminated film 11 is easily deformed, and after molding, the laminated film 11 is heated so that the shape of the molded portion 13 is stabilized. is preferably cooled. The molded portion 13 is deformed so as not to be elastically restored, unlike the case where the laminated film 11 is deformed only by elastic deformation in a normal strip package. Therefore, even if the contents 16 are accommodated, the pressing force does not act on the packaging material 12 on one side through the contents 16 .

In the laminated film 11, the angle θ at which the molded portion 13 is bent from the sealed portion 14 is preferably 5° or more, for example, about 5 to 10°, as the angle between the perpendicular to the sealed portion 14 and the tangent to the molded portion 13. mentioned. Thereby, even if the laminated film 11 is thin, it is possible to suppress breakage at the bent portion. If the bending angle θ is too large, the distortion generated in the laminated film 11 during molding of the molded portion 13 is small, and the moldability tends to deteriorate.

Although the present invention has been described above based on preferred embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10... Strip package, 11... Laminated film (packaging material), 11a... Sealant layer, 11b... Metal foil, 11c... Base layer, 12... Packaging material on one side, 12a... Metal foil, 12b... Heat sealing agent, 13 ... Molding part, 14... Sealing part, 15... Storage chamber, 16... Contents.

Claims (4)

A packaging material is arranged on both sides of an object to be stored, and a plurality of storage chambers surrounded by a sealing portion formed by sealing the packaging material is formed around the storage object, and the storage object is individually placed in each of the storage chambers. A wrapped strip package comprising:
The packaging material on one side of the content is made of metal foil,
The packaging material on the opposite side facing the packaging material on one side is composed of a laminated film containing at least a base layer and a sealant layer sealed at the sealing portion, and the total thickness of the laminated film is less than 150 μm, In addition, the laminated film has a molding portion molded into a shape capable of accommodating the content in the storage chamber, the depth d of the molding portion being 1 to 6 mm, and the width W of the molding portion being 10 to 30 mm. A strip package characterized by: 2. The strip package according to claim 1, wherein the shape of said forming portion is convex. 3. The strip package according to claim 1, wherein said forming part is formed by pressure forming, vacuum forming or deep drawing forming. 4. Any one of claims 1 to 3, wherein the width W of the molded portion is in the range of W×0.01≦d≦W×0.50 with respect to the depth d of the molded portion. A strip package according to the above paragraph.

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