JPS5917878Y2 - adhesive tape - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an adhesive tape that is printed with pictures, patterns, characters, etc., and is made of electrically conductive material.

Conventionally, this type of adhesive tape has a transparent surface layer made of vinyl chloride film, which is then rolled up into a roll.

Therefore, when the tape is rewound during use, the releasability between the vinyl chloride film on the front side and the adhesive layer on the back side is poor, making it impossible to unwind it smoothly, and the adhesive remains on the vinyl chloride film on the front side... There were defects such as...

Therefore, the present invention aims to eliminate such defects of conventional products and provide an adhesive tape that has excellent printing properties for patterns, characters, etc.

The gist of the present invention, which is a distant relative of the above objectives, is to sequentially overlay an intermediate layer made of polyethylene film and a surface layer made of transparent Botethylene film on a support layer with an adhesive layer on the back side. , and the bonding surface of one of the intermediate layer and the transparent surface layer is subjected to surface oxidation treatment by corona discharge, which is a known means, and a drawing pattern is formed by a drawing roll, and the pattern is formed on the bonding surface... . . . etc. are printed in advance, and the surface of the surface layer is further subjected to a release treatment.

An embodiment of the present invention will be described below based on the drawings. In the figure, a is an adhesive layer, b is a support layer, C is an intermediate layer made of a polyethylene film, d is a printing layer, and e is a transparent polyethylene film. The adhesive layer a is a pressure-sensitive adhesive commonly used for adhesive tapes, and the adhesive layer a is cut into a tape shape to form a support layer made of cloth such as woven fabric or paper. An intermediate layer C is applied to the surface of this support layer, and a surface layer e is bonded to the surface of this intermediate layer C.

Note that this surface layer e is subjected to a surface oxidation treatment using corona discharge in advance on one side, that is, the joint surface, and a textured surface f is formed using a squeeze roll, and a desired character pattern or the like d is suitably formed on this textured surface f. Print it out.

Further, on the other side of the surface layer e, a silicone-based or wax-based release agent known as a non-adhesive release agent is applied and dried in a conventional manner, so that the adhesive is applied to the surface of the surface layer e. Release treatment is applied to prevent blending.

The above tape is wound into a roll around a paper core (not shown) to form an electrical conductor.

In this invention, the surface layer that is bonded to the adhesive layer is made of polyethylene, so it has better releasability compared to conventional vinyl chloride film, and the bonding surface of this surface layer to the adhesive layer is Because the release process has been applied, even when the tape is rewound during use, the adhesive layer does not adhere to the surface layer and can be peeled off smoothly.

Moreover, since the printing is done through the intermediate layer of polyethylene film in this invention, it prevents the adhesive from seeping onto the printed surface, and the characters and patterns are distorted by the adhesive.
・There are no such worries.

Furthermore, one bonding surface between the intermediate layer and the transparent surface layer is oxidized to form a textured surface, and printing is performed on this textured surface.
Can print accurately on polyethylene film with poor printability,
An adhesive tape with high commercial value can be provided.

Thus achieving the intended purpose.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a cutaway perspective view, and FIG. 2 is a longitudinal sectional view. In the figure, a indicates an adhesive layer, b indicates a support layer, C indicates an intermediate layer, d indicates printing, e indicates a surface layer, and f indicates a textured surface.

Claims (1)

[Scope of utility model registration request] An intermediate layer made of a polyethylene film and a surface layer made of a transparent polyethylene film are sequentially laminated on a support layer having an adhesive layer on the back side, and one bonding surface between the intermediate layer and the surface layer is oxidized to give a texture. An adhesive tape formed by forming a shaped surface, printing a pattern, etc. on the bonding surface, and further subjecting the surface of the surface layer to a release treatment.