JPH04109185U - Transparent antistatic cello case - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the present invention is to provide a cellophane case that can completely prevent electrostatic discharge and charging without impairing transparency. [Structure] A transparent antistatic cellophane case having a transparent conductive layer having a surface resistivity of 10 ₉ Ω/□ or less in which SnO ₂ is dispersed on at least one or both sides of a base sheet.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a cello case for storing documents, etc., and used for carrying, organizing, etc.

0002

[Conventional technology]

Cellular cases are convenient for storing, carrying, and organizing documents, etc., but they tend to get charged with electricity. There was a problem. If the inside of the cello case is charged with electricity when you put it in or take it out, the stored items may get stuck together. This makes it difficult to store, and if the outside of the cello case is charged, dirt and fine dust may collect. This may damage the appearance of the cello case, and may even damage devices such as computers that are sensitive to static electricity. When placed near sensitive equipment, it could cause malfunctions and machine damage. Conventionally, such electrostatic To completely prevent air discharge and charging, add or coat carbon black, etc. The law was in place, but the drawback was that the contents could not be confirmed from the outside.

0003

[Problem that the idea aims to solve]

This invention is a cellophane film that can completely prevent electrostatic discharge and charging without compromising transparency. to provide a resource.

0004

[Means to solve the problem]

The present invention is characterized in that the base sheet has a transparent conductive layer on at least one side. It is a transparent antistatic cellophane case, and preferably the transparent conductive layer is SnO in the binder resin.₂ It is a coating layer in which the transparent conductive layer has a surface resistivity of 10₉Ω／ □This is a transparent antistatic cellophane case characterized by the following.

[0005] The base material of the cellophane case used in this invention is strong, elastic, easy to fuse, and A transparent material is preferable, and an example is a vinyl chloride sheet. conductive layer One way to provide this is to coat the surface with a so-called antistatic agent such as a surfactant or siloxane. Methods of kneading into molds or base materials, methods of vapor depositing metals and metal oxides, etc. However, although the former has good transparency, it is greatly affected by the temperature and humidity of the environment and lowers the SR value. The latter is easy to lower the SR value, but is expensive and slightly transparent. is inferior. Dispersion of carbon black may also be considered, but this is not suitable from the viewpoint of transparency. Therefore, the method of providing a conductive layer is to combine a conductive agent with a binder resin (for example, a base resin). Dispersed in the same resin or acrylic resin, vinyl chloride/vinyl acetate resin) The best method is to coat the surface with a solution (solvent: toluene, methyl ethyl ketone, etc.) it is conceivable that.

Examples of the conductive agent include inorganic fillers such as ZnO, TiO ₂ , SnO ₂ , and InO ₂ , but SnO 2 is most suitable in terms of transparency and cost. In addition to vinyl chloride resin, polyethylene, polypropylene, polystyrene, etc. can be used as the base resin, but the resin is not limited to these.

[0007] By the method described above, the conductive layer 2 is provided on one or both sides of the base sheet 1. Create a cello case sheet (Figure 1), then seal the three sides of the sheet. The transparent antistatic cellophane case is completed (Figure 2). The sealing method is based on resin. Any method may be used as long as it has high adhesion and does not damage the appearance of the cello case.

[0008]

[Effect of the idea]

This invention is transparent and can be stored without charging inside the cello case when it is put in or taken out. Items can be stored smoothly, and the outside of the cello case does not get charged, so it is easy to store dust and small items. It does not attract dust, etc., and is therefore not suitable for use near precision equipment such as computers that are susceptible to static electricity. does not cause malfunction or mechanical damage, and prevents damage caused by static electricity inside and outside the cello case. Cellphone that is completely isolated and can be used safely even near precision equipment such as computers. It is

[Brief explanation of drawings]

FIG. 1 is a sectional view of a sheet for a cellophane case of the present invention.

FIG. 2 is a perspective view of the cellophane case of the present invention.

Claims (3)

[Scope of utility model registration request] 1. A transparent antistatic cellophane case characterized by having a transparent conductive layer on at least one side of a base sheet. [Claim 2] The transparent conductive layer contains SnO ₂ as a binder resin.
2. The transparent antistatic cellophane case according to claim 1, wherein the transparent antistatic cellophane case is a coating layer in which is dispersed. [Claim 3] The surface specific resistance value of the transparent conductive layer is 10 ⁹ Ω.
3. The transparent antistatic cellophane case according to claim 1 or 2, wherein the transparent antistatic cellophane case has a value of /□ or less.