JPH07315433A - Blister package - Google Patents

Abstract

PURPOSE:To prevent a blister package from inducing an environmental pollution if it is thrown away in the ground or incinerated by a method wherein to a substrate made of a transparent thermoplastic synthetic resin or the like having a biodegradability, a case made of a similar material and provided with a containing part inside is bonded. CONSTITUTION:To a substrate 1 made of a transparent thermoplastic synthetic resin having a biodegradability or synthetic paper or carton coated with the thermoplastic synthetic resin, a case 2 made of a transparent thermoplastic synthetic resin having a biodegradability and provided with a containing part 4 bent for containing, for example, a tooth brush 3 inside is bonded with the containing part 4 facing the substrate 1. As the transparent thermoplastic synthetic resin having a biodegradability, a polymer or copolymer composed of at least one selected from among glycol, lactic acid, and caprolactone is used. In addition, the transparent thermoplastic synthetic resin having a biodegradability contains 5-25wt.% plasticizer. As the plasticizer, citrate and/or lactate is used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blister package made of a transparent biodegradable thermoplastic resin which is decomposed by discarding it in the soil after disposal without discarding it by incineration.

[0002]

2. Description of the Related Art Heretofore, a blister package made of a thermoplastic resin such as a vinyl chloride resin or a polyethylene terephthalate resin has been used for a toothbrush or the like.

[0003]

By the way, these blister packages are discarded after the contents are taken out, and are incinerated or disposed in the soil. In such disposal, there is a problem that when incinerated, pollution problems such as generation of dioxin and increase of carbon dioxide occur, and even when dumped in the soil, it is not permanently decomposed and remains. These environmental impact problems are major problems around cities, and an early solution is desired.

[0004]

Since environmental problems have been highlighted in this way, the present invention has been carried out by studying how to replace the blister package with something that can be disposed of without adversely affecting the environment. That is, a transparent thermoplastic synthetic resin having biodegradability, a substrate 1 formed of synthetic paper or cardboard coated with these thermoplastic synthetic resins,
An exterior body 2 formed of a transparent thermoplastic synthetic resin having biodegradability and provided with a housing portion bent therein is provided.
These problems could be solved by forming the blister package by adhering the accommodating portion side toward the substrate 1 and adhering them.

Since the entire blister package of the present invention is made of biodegradable resin or paper, the blister package is decomposed in a short time even if it is thrown into the soil without incineration, and Not only does it not cause the environmental problems mentioned in the subject, but it also has the effect that these components decompose in the soil and act as organic fertilizers, and it is even possible to use them as fertilizers.

The biodegradable transparent thermoplastic synthetic resin is not particularly limited, and various types such as cellulose type, amino acid type, lactone type, organic acid type, etc. can be used. From the viewpoint of properties, an organic acid-based biodegradable thermoplastic resin is preferable, and a biodegradable thermoplastic resin composed of glycolic acid or lactic acid polymer is particularly preferable. These resins can be used as homopolymers, but they can be made into copolymers by adding other components, or their physical properties can be changed by incorporating a plasticizer. Further, by adding a plasticizer to these biodegradable thermoplastic resins to impart flexibility, the moldability is improved and they are easy to use. The amount of the plasticizer blended is usually 5 to 20% by weight, preferably 10 to 15% by weight. If the content is less than 5% by weight, cracking, uneven thickness, etc. will occur due to lack of flexibility during molding, and if it exceeds 20% by weight, problems will occur in the retention formation. As these plasticizers, biodegradable substances are preferable, and citric acid esters, lactic acid esters and the like are used.
Preferred as these esters are methyl ester, ethyl ester and propyl ester.

As a method for producing a blister package using such a biodegradable thermoplastic resin, a usual method for producing a blister package can be applied as it is. That is,
A sheet made of a biodegradable thermoplastic resin is vacuum-formed while heating to form an exterior body 2, and then a housing portion 4 of the exterior body 2 is loaded with a component such as a toothbrush or the like, and further,
A transparent thermoplastic synthetic resin having biodegradability or a substrate 1 formed of synthetic paper or cardboard coated with these thermoplastic synthetic resins is adhered to the outer package with heat or an adhesive to form a blister package. Finalize. It is preferable to use various printed products for the outer packaging and mount of these blister packages. It is preferable that the steps from the vacuum forming to the adhesion of the mount are performed in a series of in-line steps.

[0008]

[Effect] Since these blister packs are transparent at the time of display at the store, the toothbrush or the like, which is the content, can be recognized from the outer surface of the blister pack, and thus the display effect is high and useful. Also, this blister package
In order to use the contained toothbrush or the like, the outer packaging body 2 and the substrate 1 are peeled from the peeling portion 14, and the stored contents are taken out and then discarded, but the blister package is biodegradable. Therefore, even if it is dumped into the soil as it is,
As it is decomposed in the soil, it does not cause environmental problems such as pollution due to waste. Also, when it is incinerated instead of dumped in the soil, it does not damage the incinerator like a chlorine-containing resin such as vinyl chloride or emit an atmosphere containing chlorine that causes pollution. Does not cause a problem.

[Brief description of drawings]

FIG. 1 is a plan view showing a state in which a toothbrush is accommodated in a blister package according to the present invention.

FIG. 2 is a side view showing a state in which a toothbrush is accommodated in the blister package according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Exterior body 3 Tooth brush 4 Storage part 5 Printing surface 6 Flocking part 7 Neck part 8 Handle part 9 Hanging hole 10 Flocking 11 Adhesive part 12 Locking part 13 Posture holding part 14 Peeling part

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C09D 167/04 PKX

Claims (4)

[Claims] 1. A transparent thermoplastic synthetic resin having biodegradability, a substrate formed of synthetic paper or cardboard coated with these thermoplastic synthetic resins, from a transparent thermoplastic synthetic resin having biodegradability. A blister package in which an exterior body that is formed and has a housing portion bent and provided inside is adhered with the housing portion side facing the substrate. 2. The blister package according to claim 1, wherein the transparent thermoplastic synthetic resin having biodegradability is a polymer or copolymer composed of one or more selected from glycolic acid, lactic acid and caprolactone. 3. The blister package according to claim 1, wherein the biodegradable transparent thermoplastic synthetic resin contains 5 to 25% by weight of a plasticizer. 4. The blister package according to claim 4, wherein the plasticizer is a citric acid ester and / or a lactic acid ester.