JPS5838153A - Antistatic sheet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an antistatic device for preventing the generation of static electricity.

Conventionally, in tape boxes for computer tapes, tape cases for cassette tapes, paper feed mechanisms of electronic copying machines, etc., static electricity is generated due to contact friction between a traveling body such as a running magnetic tape or paper and the parts that come into contact with it. The present invention solves the above-mentioned problems.The present invention solves the above problems. , Anti-static 7- applied to areas that come in contact with running objects to prevent static electricity from being generated there.
The purpose is to provide

The antistatic sheet of the present invention is characterized in that a plurality of micro glass spheres are dispersed on the surface of a synthetic resin bonding layer, and a portion of the spherical surface of the glass spheres is exposed.

The bonding layer is not particularly limited, but synthetic resins that are not easily charged, such as acrylic resins, urethane resins, and epoxy resins, can be used.

The thickness varies depending on the location where the antistatic sheet is used, but a thin layer is preferable.

Micro glass spheres come into contact with a traveling object such as a traveling magnetic tape or paper, and have a diameter of 40 to 90μ.
can be used.

The locations where the above charged sheet is applied include N, ttf
The present invention can be applied to any location that comes into contact with a traveling body, including, but not limited to, the inside of a tape box for a convenience store tape, the inside of a tape case for a cassette tape, and the paper feed mechanism of an electronic copying machine.

Embodiments of the present invention will be described below based on the drawings. In FIG. 1 showing the first embodiment of the antistatic sheet according to the fjijk of the present invention, 1 is a bonding layer made of acrylic resin, and the surface thereof is A plurality of micro glass spheres 2 having a sphere diameter of 70 to 80 microns are dispersed and buried so that a part of their spherical surface is exposed.

A reinforcing layer 3 for reinforcing the bonding layer 1 is attached to the back surface of the bonding layer 1. This reinforcing layer 5 is made of, for example, a polyethylene film, a polyvinyl chloride sheet, a polyester film, or the like.

FIG. 2 shows a second embodiment of the antistatic sheet of the present invention. This antistatic notebook is made by attaching a release paper to the reinforcing layer 3 of the one shown in FIG. 5, the other configuration is the same as that shown in FIG. 1, 1 is a bonding layer, and 2 is a glass bulb. This antistatic sheet has the advantage that once the release paper 5 is peeled off, the adhesive layer 4 can be applied to the desired location without using a separate adhesive.

Next, a method of using the charged and pressed sheet of the present invention will be described. As shown in FIGS. 5 and 4, the surface on which a plurality of glass bulbs 2 are provided is directed toward the direction where the magnetic tape 6 as a running body touches the VC@ when it runs. , when using the antistatic sheet shown in Figure 1.
The reinforcing layer 50 is pasted with adhesive, and when the antistatic sheet shown in FIG. The magnetic tape 6 is brought into point contact with the spherical surface of the glass bulb 20 exposed on the antistatic sheet.

Due to this point contact, the contact area between the antistatic notebook and the running magnetic tape 6 becomes small, and the contact friction is small because the contact is smooth, and static electricity generation induced by friction is definitely prevented. Prevented.

As explained above, the antistatic device of the present invention has a simple structure in which a plurality of micro glass spheres of the synthetic resin bonding layer are dispersed, so it is easy to manufacture.
If applied to areas where a running body such as a running magnetic tape or a'fk comes into contact, it will bring the glass bulb into point contact with the running body, reducing contact friction and reliably preventing the generation of static electricity, while also preventing the running body from slipping. It has the remarkable effect of improving the

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing the first embodiment of the antistatic sort according to the present invention; Fig. 2 is a cross-sectional view showing the II2 embodiment of the antistatic sort according to the present invention; A diagram showing the state of use of the sheet, a cross-sectional view taken along line IV-F/ of Figure 4 and Figure 1.0 1... Bonding layer, 2... Glass bulb, 5... Reinforcing layer,
6...Magnetic tape procedure amendment letter, October 1980 38 2. Name of the invention Teiden Fatty Sheet 3. Relationship with the case of the person making the amendment 5. Date of the amendment order "1 shot" 7. 4 Positive content (1) Part 11, theory 4, line 12 from the bottom r ・--
- One is prevented. ”, change the line and insert the following sentence. [Test Example The dynamic friction coefficient between blood provided with a glass bulb of an antistatic sheet having the following structure and the surface of a polyester film as a magnetic tape oiIi material was determined in accordance with the specifications of the Japanese Industrial Standards. *W prevention sheet frame, bonding layer l has 86 μQ, glass bulb 2t-bonding layer IC) 1-this Qboo-IQ, 0
009jM is dispersed and a portion corresponding to the diameter of the curved ball is installed. - The determined dynamic** coefficient value was α238. This value is based on the performance of each plastic film against mild steel (mainly used for tape boxes, etc.).
1gk value (according to ＾-Gisaku [Plastic Film], published by Nichiboku Kuri!+r Threshold Company): α341 for polyethylene film. In polybupylene film (L4G,
It is clearly smaller than α50 for ilk-quality polyvinyl chloride film and α3BK for polycarbonate film, so it can be seen that the antistatic sheet of the present invention &Ij4 also improves the lubricity of the traveling body. ”

Claims (1)

[Claims] (1) An antistatic sheet characterized in that a plurality of micro glass spheres are dispersed on the surface of a bonding layer made of synthetic W*, and a part of the spherical surface of the glass spheres is exposed.