JP2000309762A - Side-edge-uncoated pressure-sensitive adhesive tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a pressure-sensitive adhesive tape which can be peeled and bonded repeatedly by leaving a continuous area which is not coated with a pressure-sensitive adhesive and has a certain width on a side edge part of the side coated with a pressure-sensitive adhesive. SOLUTION: After the front side (nonsticky side) of a substrate 3 is printed if necessary, a polyethylene resin is laminated to the side to form a polyethylene resin layer 2 with a thickness of about 20 μm. Then, a release agent solution (e.g. a silicone release agent) is applied and dried to form a release agent layer 1. After a water-soluble emulsion pressure-sensitive adhesive is applied to the release agent layer 1 and dried, the front side is brought into contact with the back side under pressure to transfer the pressure-sensitive adhesive to the back side to form a pressure-sensitive adhesive layer 4. When the pressure- sensitive adhesive is applied, a coating roll wound with a tape having a certain width is used to form a part 5 uncoated with the pressure-sensitive adhesive, giving the objective pressure-sensitive adhesive tape, The substrate is selected from among paper, synthetic paper, polypropylene films, polyester films, etc., from the viewpoint of printability and easiness of cutting.

Description

DETAILED DESCRIPTION OF THE INVENTION

When using this product, the adhesive is easily peeled off the adherend by using the uncoated part of the adhesive on the tape adhesive coated surface.
It is an adhesive tape that can be re-applied. Further, by printing a bar code or the like on the surface of the adhesive tape, a function can be provided which can be substituted for a bar code label with a release paper. In the case of labels with release paper, it is inevitable that the label part will be lost due to the punching process of the label, and it will be necessary to discard the used release paper, which will increase the cost and generate waste. This product is an adhesive tape that can solve these problems. There are various ways to use this product after it is attached to an adherend. In addition to its function as a barcode, for example, if it is affixed to a shrink film enclosing the instant cup ramen container, if you pull the uncoated part of this product and pull it, the shrink film will break easily. The container can be easily removed without any hassle. Then, the product is peeled off from the shrink film, lightly temporarily fixed on the outer wall surface of the container, the container lid is opened, hot water is poured, and the lid and the container body are fixed with the product. The base material of this product can be appropriately selected from paper, synthetic paper, PP and PET films, etc., in consideration of printability, easy cutability, and the like. After performing necessary printing on the front side (non-adhesive side) of the base material, a release agent is applied and dried on the same side to provide a release agent layer. In the case where the release agent soaks during coating depending on the base material and processing cannot be performed, the workability is improved by providing a polyethylene laminate layer or PVA coating in advance. Next, the pressure-sensitive adhesive is applied to the release agent layer-coated surface and dried, and the surface is superimposed on the back surface while applying pressure, whereby the pressure-sensitive adhesive is transferred to the back surface and the pressure-sensitive adhesive layer is obtained. When applying this adhesive layer,
By applying taping or the like to the coating roll at a constant width, an uncoated portion is formed. Hereinafter, examples will be described.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One side of the surface of high quality paper (Oji Paper: OET45 U.S.P .: 45 g / m ² ) is laminated with polyethylene resin (LK-50, manufactured by Mitsubishi Chemical Corporation) in a laminating film thickness of 20 μm by the usual hot melt extrusion lamination method. Then, a polyethylene resin layer is provided. 2. 1 part of silicone release agent (Toray Dow: SD-7220) is applied to the polyethylene resin layer surface of high quality paper with toluene 10
0 parts to prepare a coating solution, which was solid content 0.5 g / m
^Then , coating and drying are performed to form a release agent layer. 3. A water-soluble emulsion adhesive (ATR-180, manufactured by Seiden Chemical Co., Ltd.) was applied to the surface of the release agent layer of high quality paper at a solid content of 15 g /
m ² and composed so coated and dried by superimposing the back while pressurizing the surface, the adhesive is transferred to the back surface adhesive layer. At the time of applying the pressure-sensitive adhesive layer, a non-applied portion is formed by applying taping or the like to the application roll at a constant width.

[Effect of the Invention] This product uses an adhesive tape that allows the adhesive to be easily re-peeled and re-applied to the adherend by using the uncoated part of the adhesive on the tape adhesive coated surface when used. is there. or,
By printing a barcode or the like on the surface of the adhesive tape, a function that can be substituted for a barcode label with a release paper is provided. For labels with release paper, the loss of the label part is inevitable due to the punching of the label, and it is necessary to discard the used release paper, which increases the cost,
This product is an adhesive tape that can solve these problems although waste is inevitably generated.

[Brief description of the drawings]

FIG. 1 is a sectional view of an uncoated pressure-sensitive adhesive tape at a side end.

FIG. 2 is a plan view of a design or the like in which a side end portion uncoated adhesive tape is printed.

[Explanation of symbols]

 Reference Signs List 1 release agent layer 2 polyethylene resin layer 3 base material: high quality paper 4 adhesive layer 5 adhesive-uncoated part

Claims (3)

[Claims] 1. A pressure-sensitive adhesive tape in which a pressure-sensitive adhesive-free portion is continuously provided in a predetermined width range of the pressure-sensitive adhesive-coated surface side end of the pressure-sensitive adhesive tape. 2. The pressure-sensitive adhesive tape according to claim 1, wherein the pressure-sensitive adhesive has a performance capable of re-peeling and re-sticking. 3. The pressure-sensitive adhesive tape according to claim 1, wherein the surface of the pressure-sensitive adhesive tape is continuously and intermittently subjected to barcode printing, characters, and designs.