JPS6220429Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pressure-sensitive adhesive tape mainly used for fixing wire harnesses in automobiles.

Traditionally, this type of tape does not adapt to changes in thermal stress;
According to this method, wrinkles are generated, the holding force is reduced, and the material is likely to peel off.This tendency is particularly noticeable when used on uneven parts, and thus it is not suitable for use, for example, in fixing a wire harness.

The purpose of the present invention is to obtain a tape that does not have such inconveniences.
In a pressure-sensitive adhesive tape, a film 4 made of polypropylene, polyethylene or other synthetic resin is applied to the back side of a tape body 3 made of a cloth made of polypropylene, polyethylene or other synthetic resin, which is sequentially applied with the adhesive. A large number of escape holes 5 having an adhesive layer of the same quality as the adhesive of layer 1 on the inner peripheral surface are provided.

The cloth constituting the tape body 3 is formed by using synthetic resin film strips 3a as warp and weft yarns to form, for example, a plain weave, and the film 4 is applied to the surface by packing treatment, that is, by heat pressing. The back surface is first subjected to corona treatment by infrared irradiation, and then the adhesive layer 1 described above is applied, and then the release paper 2 is applied. As a means for forming the escape holes 5, for example, a rolling roller as shown in FIG. By dipping the needle 7 into an adhesive layer of the same quality as 1 and rolling the film 4 under pressure while the adhesive is attached to the needle 7, the adhesive layer 1 is adhered to the inner peripheral surface of the relief hole 5. An adhesive layer of the same quality as the adhesive was formed. In addition, relief hole 5
The diameter is, for example, about 50 microns, and the arrangement is generally one at each pitch center of the cloth.

In this way, according to the present invention, a large number of escape holes 5 are provided in the film 4 on the back side of the tape body 3, and the holes 5 act as escapes for heat and thermal stress. It does not cause wrinkles due to stress changes, and is extremely suitable as a means for fixing wire harnesses in automobiles, for example. Furthermore, the inner peripheral surface of the relief hole 5 is coated with an adhesive layer of the same quality as the adhesive layer 1. Since it forms
This is integrated with the adhesive layer 1, and has the effect that the film 4 is firmly adhered to the tape body 3 and will not peel off.

[Brief explanation of the drawing]

FIG. 1 is a partially cut-away perspective view of an example of the present tape, FIG. 2 is a sectional view thereof, and FIG. 3 is a perspective view of a rolling roller. 1...Adhesive layer, 2...Release paper, 3...Tape body, 4...Film, 5...Escape hole.

Claims (1)

[Scope of utility model registration request] Acrylic or other pressure sensitive adhesive layer 1 on the front side
A film 4 made of polypropylene, polyethylene or other synthetic resin is attached to the back of the tape main body 3, which is made of a cloth made of polypropylene, polyethylene or other synthetic resin, on which a peelable release paper 2 is sequentially applied.
A pressure-sensitive adhesive tape comprising a plurality of escape holes 5 having an adhesive layer of the same quality as the adhesive layer 1 on the inner circumferential surface of the film 4.