JPS6132977Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a novel pressure sensitive adhesive tape.

Conventionally, pressure-sensitive adhesive tapes have been made by stretching thermoplastic resin films and forming them into fibers or narrow films, which are then arranged in separate layers in both the vertical and horizontal directions and then integrated to form a tape base material. death,
There are products on the market that are provided with an adhesive layer on one side of this base material and a paper or synthetic resin film layer on the other side, and are roll rolled for practical use. However, this configuration has the disadvantage that when a highly adhesive adhesive is used, the tape base material often breaks when the adhesive tape is peeled off during use. The reason for this is that when the adhesive tape is wound into a roll, the adhesive layer provided on one side of the tape base material and the paper or synthetic resin film layer provided on the other side become temporarily adhesive. This is because if the adhesive force at this temporarily bonded portion is greater than the adhesive force between the longitudinal layer and the lateral layer constituting the tape base material, both the longitudinal and lateral layers will separate into two pieces when the roll is unwound.

The present invention has been made to solve the above-mentioned conventional drawbacks, and it is possible to peel it off very easily even when the roll is rewound and used.
Another object of the present invention is to provide a pressure-sensitive adhesive tape that can be easily torn and cut without using a cutting tool such as a tape cutter, and that also has a weight similar to that of cloth tape and gives an image of a high-class product. shall be.

That is, the pressure-sensitive adhesive tape of the present invention is made by arranging thin films of thermoplastic resin in separate layers in both the vertical and horizontal directions, and melt-extruding them onto the longitudinal layer side of a vertical and horizontal laminate that is integrated by lamination adhesive. A tape base material is formed by adhering paper through a thermoplastic resin, and an adhesive layer is further provided on the paper side.
A thermoplastic resin layer is provided on the horizontal layer side of the vertical and horizontal laminate, and this resin layer is subjected to a mold release treatment. Note that instead of the thermoplastic resin layer, a thermoplastic resin film may be laminated on the horizontal layer side of the vertical and horizontal laminate via a melt-extruded thermoplastic resin.

Next, one embodiment of the present invention will be described with reference to the accompanying drawings.

Example Using a thin stretched polyethylene film, the longitudinal layer 1a (1000 denier x 2 pieces/inch) and the lateral layer 1b (300 denier x 6 pieces/inch) were arranged as separate layers, and then They were integrated with adhesive to form a vertical and horizontal laminate 1. This vertical and horizontal laminate 1
unsalted kraft paper 3 (basis weight 73
g/m ² , Kurupak treatment) was laminated to constitute tape base material A. Then, an adhesive layer 4 was provided on the kraft paper 3 side. Further, on the horizontal layer side 1b of the vertical and horizontal laminate 1, a film-like adhesive layer 5 of melt-extruded polyethylene resin was applied. Next, this polyethylene resin layer 5 was coated with silicone resin and subjected to mold release treatment 6.

For practical use, the pressure-sensitive adhesive tape produced in this manner was rolled into a product.

According to the configuration of the above embodiment, the silicone resin coating layer 6 and the adhesive layer 4 are easily peeled off due to the length of the releasability, which is a characteristic of silicone resin.
Even if a highly adhesive adhesive is used, the roll is rewound and the tape is laminated horizontally and vertically.
No damage to the tape base material A, such as layer peeling or cracking of the kraft paper 3, will occur.

In addition, since the kraft paper 3 is laminated and bonded onto the vertical layer 1a of the vertical and horizontal laminate 1 via the melt-extruded polyethylene resin 2, the narrow film forming the vertical layer 1a is subject to considerable thermal deterioration. mechanical strength decreases as a result. As a result, tearing of the tape base material (A) in a direction substantially perpendicular to the longitudinal layer 1a becomes extremely easy, and cutting tools such as a tape cutter are not required when using the tape.

Furthermore, when rolled, the vertical and horizontal laminate 1 forming the uneven surface of the tape base material A is located on the back side, so a woven fabric image appears on the tape, which not only increases the strength but also makes it look like a cloth tape. It gives a sense of weight and gives the impression that it is a luxury product.

As detailed above, according to the present invention, not only can a wide variety of adhesives be used regardless of their adhesive strength, but also the destruction of the tape base material can be prevented even when the tape is used by unwinding the roll. It is said that it does not cause any damage, can be easily torn and cut without the use of cutting tools such as tape cutters, and has the same weight and appearance as cloth tape, giving the impression of a high-quality product. It is possible to provide a pressure-sensitive adhesive tape that exhibits excellent effects not seen in other countries.

[Brief explanation of the drawing]

The drawing is a sectional view showing an embodiment of the present invention. A... Tape base material, 1... Vertical and horizontal laminate, 1a longitudinal layer, 1b... horizontal layer, 2, 5... thermoplastic resin layer, 3... paper, 4... adhesive layer, 6... ...Release layer.

Claims (1)

[Scope of utility model registration request] Thin films of thermoplastic resin are arranged in separate layers in both the vertical and horizontal directions, and paper is bonded to the vertical layer side of the vertical and horizontal laminate through the melt-extruded thermoplastic resin. A pressure-sensitive adhesive tape, in which an adhesive layer is provided on the paper side, a thermoplastic resin layer is provided on the horizontal layer side of the vertical and horizontal laminate, and this resin layer is subjected to a release treatment.