JP2001002080A - Plaster packaging bag - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To hardly adsorb a medicinal component of a plaster, to improve moisture-proof property and sealing property, and to make it possible to store an encapsulated plaster for a long time. SOLUTION: It is formed by a packaging material in which a moisture-proof base film 4 and a heat-sealing type biaxially stretched polyester film 5 are adhered by dry laminating means or extrusion laminating means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plaster packaging bag in which a plaster sheet mainly composed of, for example, methyl salicylate is enclosed.

[0002]

2. Description of the Related Art A packaging bag for a plaster is required to have heat resistance and moisture proofness, not to transfer a medicinal ingredient to the innermost film, and to be easy to open and handle at the time of use. Conventionally, a packaging material in which a polyester film having a thickness of 12 μm and an acrylonitrile film having a thickness of 20 μm are adhered by a dry laminating means has been mainly used.

[0003] The above packaging material has heat resistance as a whole, but lacks moisture resistance. This has the property that the polyester film that constitutes the packaging material lacks moisture resistance even if it has heat resistance, and the acrylonitrile film has the property that it does not adsorb medicinal components but lacks moisture resistance and heat resistance. Because it is.

[0004]

The conventional plaster packaging bag has heat resistance as a whole, but the polyester film as the base film on the outer surface and the acrylonitrile film as the innermost layer have moisture-proof properties. Due to chipping, moisture enters into the internal space, softening (deteriorating) the plaster encapsulated inside, and the acrylic nitrile film on the inner surface lacks heat resistance, which tends to cause poor sealing during bag making. There is.

[0005] Therefore, a packaging bag for a plaster was prepared using a packaging material in which a polyester film was replaced with a biaxially oriented polypropylene film having a high moisture-proof property. In this case, the moisture-proof property could be improved. However, heat resistance is further deteriorated, and seal failure is not improved.

In order to improve the sealing property of the packaging material,
A plaster packaging bag was prepared using a packaging material in which the acrylic nitrile film constituting the packaging material was replaced with a material obtained by bonding a polyethylene film to an acrylic nitrile film via an anchoring agent. Can be improved, but the medicinal component of the plaster in which the polyethylene film adhered to the acrylonitrile film is enclosed, such as methyl salicylate, is adsorbed, and there is a problem in that the plaster is stored for a long time.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and uses a packaging material in which a moisture-proof base film and a heat-sealing type biaxially stretched polyester film are adhered to each other to reduce the absorption of the medicinal component of the plaster. It is an object of the present invention to provide a packaging bag for plaster, which prevents the plaster from being prevented, improves the moisture-proof property and the sealing property, and enables the plaster to be stored for a long period of time.

[0008]

The packaging bag for a plaster of the present invention is formed of a packaging material in which a moisture-proof base film and a heat-sealing type biaxially oriented polyester film are bonded by dry lamination or extrusion lamination. It does not adsorb the medicinal components of the plaster, and has excellent moisture-proof and sealing properties, and enables the sealed plaster to be stored for a long period of time.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a plaster packaging bag of the present invention, and a plaster sheet 2 mainly composed of methyl salicylate is enclosed in the plaster packaging bag 1.

The packaging material 3 of the plaster packaging bag 1 is a laminate of an outer layer 4 and an inner layer 5, and is heat-sealed so as to form a three-side seal bag or a pillow bag.

[0011] As shown in FIG.
Is a biaxially oriented polypropylene film having a thickness of 25 microns, an inner layer 5 is a biaxially oriented polyester film of a heat seal type having a thickness of 15 microns, and a biaxially oriented polypropylene film 4 and a biaxially oriented polyester film of a heat seal type 5 is a dry laminating adhesive 6
It is adhered by. The heat-sealable biaxially stretched polyester film 5 is composed of a heat seal layer having a thickness of 3 microns and a biaxially stretched polyester layer having a thickness of 12 microns. Biaxially oriented polypropylene film 4
And a heat-sealing type biaxially stretched polyester film 5 can also be bonded by a polyethylene extrusion laminating means.

That is, the packaging material 3 is a heat-sealing type 2 having a property that the inner layer 5 does not adsorb methyl salicylate, which is a medicinal component of the plaster, and has excellent sealing properties.
It is an axially stretched polyester film. Therefore,
The plaster packaging bag 1 made of the packaging material 3 has excellent sealing properties and moisture-proof properties, and hardly permeates or adsorbs methyl salicylate, which is a medicinal component of the plaster, into the layer.

In the above embodiment, the outer layer 4 as the base film has a moisture-proof property, but a biaxially stretched polypropylene film is used. However, this may be replaced with a polyester film having a metal deposition surface. It is. Instead of this metal deposition, for example, aluminum oxide deposition or silicon oxide deposition may be used.

To prepare the packaging bag 1 for plaster, a laminate film obtained by bonding a biaxially oriented polypropylene film 4 and a heat-sealing type biaxially oriented polyester film 5 with a dry laminating adhesive 6 is cut into a predetermined size. The heat-sealing type biaxially stretched polyester film 5 is placed inside with the shape packaging material 3 in the middle position in the longitudinal direction.
This is performed by folding the sheet and forming the heat-sealed portions 7 on both side edges by ordinary heat-sealing means.

The plaster sheet 2 is inserted from the open end into the plaster packaging bag 1 having the upper opening thus formed, and then the open end of the plaster packaging bag 1 is sealed with a normal heat sealing means. To form the heat seal portion 8 to form the plaster sheet 2
Is molded inside.

A package in which the plaster sheet 2 is enclosed is
In the results of the experiment after about 90 days at a temperature of 80 ° C. and a humidity of 100%, there was almost no change in methyl salicylate, which is an active ingredient of the plaster sheet 2, and the plaster sheet 2 did not soften (degrade).

[0017]

As described above, according to the present invention, the medicinal effect of the plaster is obtained by forming a moisture-proof base film and a heat-sealing type biaxially stretched polyester film with a packaging material bonded by dry laminating means. It is difficult to adsorb the components, is excellent in moistureproofness and sealability, and enables the sealed plaster to be stored for a long period of time.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a plaster of a plaster packaging bag according to the present invention is sealed.

FIG. 2 is a sectional view showing an example of a packaging material of the plaster packaging bag according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 packaging bag for plaster 2 plaster 3 packaging material 4 outer layer 5 inner layer 6 dry laminating adhesive

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B32B 31/30 B32B 31/30

Claims (5)

[Claims] 1. A plaster packaging bag in which a plaster sheet mainly composed of methyl salicylate is enclosed, wherein the packaging bag is a dry laminate of a moisture-proof base film and a heat-sealing type biaxially oriented polyester film. A packaging bag for plaster, which is formed by a packaging material bonded by means or extrusion laminating means. 2. The packaging bag for plaster according to claim 1, wherein the moisture-proof base film is a biaxially stretched polypropylene film. 3. The packaging bag for plaster according to claim 1, wherein the moisture-proof base film is a polyester film having a metal deposition surface. 4. The plaster packaging bag according to claim 3, wherein the metal-deposited surface is an aluminum oxide-deposited surface. 5. The packaging bag for plaster according to claim 3, wherein the metal-deposited surface is a silicon oxide-deposited surface.