JP2748507B2 - PTP packaging container - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PTP packaging container suitably used for PTP packaging of pharmaceuticals such as tablets and capsules.

2. Description of the Related Art Problems to be Solved by the Conventional Technology and the Invention
Polyvinyl chloride (PVC), high-density polyethylene (HDPE), polypropylene (PP), etc. are used as the material for forming the container body of the PTP packaging container, especially those using PVC. . However, these packaging materials are not always satisfactory in terms of safety and non-adsorption of flavor components, and a packaging container for PTP made of a packaging material further improved in these respects is desired.

The present inventor has studied such a packaging container for PTP, and found that it is effective to use polyacrylonitrile (PAN) having excellent gas barrier properties. However, since PAN is a very expensive material, There was a problem that cost disadvantages occurred.

The present invention has been made in view of the above circumstances, and by using PAN, it is possible to effectively prevent the adsorption and permeation of a flavoring component, and to package a product containing a flavoring component such as a pharmaceutical product in PTP. An object of the present invention is to provide a packaging container for PTP which can be used effectively and which does not cause a large cost increase even if PAN is used.

Means for Solving the Problems In order to achieve the above object, the present invention provides a composite in which the innermost layer in contact with the contents is a polyacrylonitrile layer having a thickness of 10 to 30 μm, and a polyvinyl chloride layer is laminated on the innermost layer. The upper end opening of the concave portion of the PTP container body in which the concave portion is formed by the packaging material is covered with a PTP lid material, and the PTP lid material is thermally bonded to the upper end open end portion of the PTP container main body. A packaging container for PTP is provided.

According to the present invention, a PTP container main body is formed by a composite packaging material in which the innermost layer in contact with the contents is formed of polyacrylonitrile (PAN) and the polyvinyl chloride (PVC) layer is laminated on the PAN layer. The innermost PAN layer prevents adsorption and permeation of flavoring components, protects the fragrance of the contents, and is effectively used for PTP packaging of tablets and other pharmaceuticals. Even if PAN is used, the thickness of the PAN layer is 10 to 30 μm.
m.

Further, the thermal adhesiveness of PAN is usually reduced when the PAN is thin, but in the present invention, the PVC layer laminated on the PAN layer effectively acts as a buffer layer at the time of thermal bonding, and the PAN layer has a thickness of 10 to 30 μm.
Since it shows good thermal adhesion even as a thin layer of m
The top opening of the PTP container body is covered with a PTP lid material and can be thermally bonded to the top opening end.
The opening at the upper end of the concave portion of the P container body can be covered and sealed.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings.

Embodiment FIG. 1 is a view showing a PTP packaging container according to an embodiment of the present invention.
Fig. 2 shows a PTP packaging container A according to one embodiment of the present invention, wherein 2 is a polyacrylonitrile (PAN) content item. The PAN layer 2 has an innermost layer in which a polyvinyl chloride (PVC) layer 3 is laminated on one surface of the PAN layer 2 directly or via an adhesive.

Here, the thickness of the PAN layer 2 is 10 to 30 μm.
The thickness of the VC layer 3 can be set to 100 to 500 μm.

When the packaging container A for PTP is formed using the composite packaging material 1, as shown in FIG. 2, the composite packaging material 1 is heated, and the concave portion 4 is formed by depressurizing or pressing.
The PTP container main body B is used to accommodate contents 5 such as tablets in the concave portion 4 of the PTP container main body B, and the upper end opening of the concave portion 4 is covered and sealed with the PTP lid 6.

In this case, the PTP cover 6 is a film in which a metal foil such as an aluminum foil is coated with a polyester-based film (such as PES manufactured by Toagosei Co., Ltd.) or a synthetic resin film coated with a vinyl chloride-based or vinyl acetate-based paint. According to the PTP lid 6, the polyester film layer or the synthetic resin film layer covers the concave portion 4 of the PTP container body B so that the polyester film layer or the synthetic resin film layer is located inside the container. In addition to being capable of being thermally bonded (heat-sealed) to the PAN layer at the upper end of the opening, the lid 6 can be provided with easy-openability.

According to the PTP packaging container, the inner layer of the PTP container body that comes into contact with the contents (tablets) is formed of polyacrylonitrile, which is excellent in safety and gas barrier properties, so that the flavoring component of the contents is adsorbed. Penetration can be effectively prevented and the contents can be stored safely without deteriorating the quality of the contents, and even if the polyacrylonitrile (PAN) layer is formed as a thin layer as 10 to 30 μm, the above effects are surely exhibited. Therefore, cost reduction is achieved. Further, due to the buffering action of the PVC layer, the PTP can be formed as a thin layer of 10 to 30 μm as described above.
Good thermal adhesiveness with the lid material is obtained.

The packaging container for PTP of the present invention is not limited to the above embodiment. For example, the PTP packaging container may be provided between the innermost polyacrylonitrile layer and the polyvinyl chloride layer of the PTP container body.
The formation of a layer or an intermediate layer of two or more layers (an olefin resin is preferable from the viewpoint of buffering properties) and the formation of an appropriate surface layer on the polyvinyl chloride layer may be used. Various changes can be made within the scope of the invention.

Effect of the Invention In the PTP packaging container of the present invention, the innermost layer in contact with the contents of the PTP container main body is formed of polyacrylonitrile having excellent gas barrier properties and safety. Even if PTPs are packaged with such medicines, the flavor components of the contents will not be adsorbed or permeated, and the quality of the contents will not be impaired. In addition, since the polyvinyl chloride layer is laminated on the innermost polyacrylonitrile layer, it has excellent strength.Moreover, since this polyvinyl chloride layer effectively acts as a buffer layer at the time of heat bonding, the polyacrylonitrile layer has a thickness of 10 to 10 μm. Even if formed in a thin layer of 30 μm, it has good thermal adhesiveness, heat seals the PTP lid material to the upper end opening end of the recess of the PTP container body, and covers and seals the upper end opening of the recess. Therefore, cost reduction can be achieved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a composite packaging material used in an embodiment of the PTP packaging container of the present invention, and FIG. It is sectional drawing which shows the state which performed. A: PTP packaging container, B: PTP container main body 1: Composite packaging material, 2: Polyacrylonitrile layer 3: Polyvinyl chloride layer, 4: Depression 5: Contents, 6, PTP Lid material

Claims (1)

(57) [Claims] 1. A PTP container body in which the innermost layer in contact with the contents is a polyacrylonitrile layer having a thickness of 10 to 30 μm, and a concave portion is formed by a composite packaging material in which a polyvinyl chloride layer is laminated on the innermost layer. A packaging container for a PTP, wherein an upper end opening of the recess is covered with a PTP lid material, and the PTP lid material is thermally bonded to an upper end opening end of the PTP container body.