JPH0578625A - Printed tacky tape and its production - Google Patents

Abstract

PURPOSE:To eliminate substrate selectivity for printing inks and make a printed tacky tape conform to diversified small-quantity production. CONSTITUTION:A printed tacky tape is obtained by forming a tacky agent layer 2 composed of a transparent tacky agent on one surface of a support 1 composed of a transparent thermoplastic resin film and printing the above- mentioned tacky agent layer 2. The printing is readily carried out and the tacky tape of good quality can be produced at a low cost. The tacky tape is responsive even to diversified small-quantity production of different printings without deteriorating the production efficiency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing adhesive tape and a method for manufacturing the same.

[0002]

2. Description of the Related Art It is known to provide a printing layer between a transparent synthetic resin layer and an adhesive layer in an adhesive tape on which characters, such as a product name and a company name, and a graphic are printed (see, for example, Japanese Patent Laid-Open No. 2000-242242). Akira
60-26076, JP-A-62-101439).

[0003]

However, when a polyolefin resin is used as the synthetic resin for forming the synthetic resin layer, the surface activity of the polyolefin resin is low, so that the surface of the polyolefin resin can be printed or a pressure-sensitive adhesive can be used. It is necessary to perform corona discharge treatment in advance before applying. Also, when changing the printing, it is necessary to interrupt the undercoating and pressure-sensitive adhesive coating in the post-process. In the case of high-mix low-volume production, the primer is applied after printing, and then the pressure-sensitive adhesive is further applied. Therefore, there is a problem that the manufacturing time is long and the delivery time is delayed.

It is an object of the present invention to solve the above-mentioned conventional problems, to eliminate the substrate selectivity for printing ink, and to provide a printing adhesive tape suitable for high-mix low-volume production.

[0005]

According to the invention of claim 1, an adhesive layer made of a transparent adhesive is formed on one surface of a support made of a transparent thermoplastic resin film, and printing is performed on the adhesive layer. What is given is the summary. The gist of the invention of claim 2 is that the above-mentioned printing is performed by heating and melting a printing ink in which a pigment is mixed in a hot-melt type resin.

According to a third aspect of the present invention, a transparent pressure-sensitive adhesive is applied to one surface of a support made of a transparent thermoplastic resin film to form a pressure-sensitive adhesive layer, and the pressure-sensitive adhesive layer is formed into a hot-melt type resin. The gist of the invention is to heat-melt and print a printing ink mixed with a pigment.

The transparent thermoplastic resin film used in the present invention is a stretched polypropylene film,
Examples include stretched polyvinyl chloride film, polyethylene terephthalate film, polyethylene film, and the like, which may be colored to such an extent that transparency is not lost. The thickness is preferably 30 to 70 μm. The transparent adhesive used in the present invention may be either a synthetic rubber type or an acrylic type adhesive, and the thickness of the adhesive layer is 15
It is preferably about 30 μm. The adhesive tape of the present invention is
When the printing area is large, the adhesive strength is reduced, and therefore, it is more suitable for printing characters such as product names, company names, etc., lines of frames, etc., than surface patterns, etc. The printing method used in the present invention may be any of flexographic printing, letterpress printing, and screen printing, but it is preferable to employ flexographic printing which is easy to plate-making, has a short delivery time, and is inexpensive. As the printing ink used in the present invention, a hot-melt type resin in which a pigment is mixed is used by heating and melting,
The printing layer is highly elastic and has good adhesiveness with the adhesive layer,
The printing layer deforms following the deformation of the adhesive layer during winding, etc.
It is preferable because cracking and peeling from the pressure-sensitive adhesive layer are unlikely to occur.
Examples of hot-melt resins include ethylene-vinyl acetate copolymer (EVA), styrene-isoprene-styrene block copolymer (SIS), styrene-ethylene-
A melting point of 80 to 200 obtained by blending an elastic material such as butylene-styrene block copolymer (SEBS) with a tackifying resin such as an aliphatic petroleum resin, a rosin resin and a terpene resin.
Compositions at ° C are preferably used. As the pigment, it is preferable to use a masterbatch in which a mineral pigment is mixed with a tackifying resin in advance. A silicone-based, emulsion-based or solvent-based release agent is preferably applied to the surface of the support of the present invention opposite to the pressure-sensitive adhesive layer.

[0008]

According to the inventions of claims 1 and 2, an adhesive layer made of a transparent adhesive is formed on one surface of a support made of a transparent thermoplastic resin film, and the adhesive layer is printed. Therefore, printing is possible regardless of the support. or,
The undercoating agent for printing is not necessary, the fixability of the printing ink is good, and printing is performed after the adhesive tape is manufactured, so that the manufacturing process is simplified. Further, in the invention of claim 2, as the printing ink, a mixture of a hot-melt resin and a pigment is used by heating and melting, so that the printing layer can follow the deformation of the pressure-sensitive adhesive layer and the adhesion of the printing layer. Good adhesion to the agent layer,
Even when the pressure-sensitive adhesive tape is rewound or peeled from the non-adhered body, it does not peel from the pressure-sensitive adhesive layer.

According to the third aspect of the present invention, the pressure-sensitive adhesive layer is formed on one surface of the support and printing is performed on the pressure-sensitive adhesive layer. Therefore, regardless of the support, various types of printing pressure-sensitive adhesive tapes can be efficiently used in small amounts. Can be produced.

[0010]

EXAMPLES Examples of the present invention will be specifically described below.
The invention is not limited to the examples. FIG. 1 is a partial sectional view showing an embodiment of the inventions of claims 1 and 2.
A transparent acrylic adhesive (“SKDyne 1717” manufactured by Soken Chemical Co., Ltd.) is coated and dried on one surface of the support 1 made of a transparent stretched polypropylene film having a thickness of 50 μm so as to have a thickness of 20 μm. A pressure-sensitive adhesive layer 2 is formed on the pressure-sensitive adhesive layer 2, and styrene-isoprene-
Printing is performed by using a printing ink in which a pigment is mixed with a composition in which a terpene-based resin is blended as a tackifying resin in a styrene block copolymer to form a printing layer 3. On the surface of the support 1 on the side opposite to the pressure-sensitive adhesive layer, a silicone-based release agent is applied to form a release agent layer 4.

FIG. 2 is an explanatory view showing a printing process of the invention of claim 3. A transparent acrylic adhesive (“SKDyne 1717” manufactured by Soken Chemical Co., Ltd.) is provided on one surface of the support 1 made of a transparent stretched polypropylene film having a thickness of 50 μm and a thickness of 20 μm.
Was coated using a roll coater and dried to provide the pressure-sensitive adhesive layer 2 to obtain a pressure-sensitive adhesive tape.

In the pressure-sensitive adhesive layer 2 of the obtained pressure-sensitive adhesive tape, 40 parts by weight of ethylene-vinyl acetate copolymer, 30 parts by weight of styrene-isoprene-styrene block copolymer, tackifying resin ("Arcon P100" manufactured by Arakawa Chemical Industry Co., Ltd.) 6 parts by weight, 30 parts by weight of naphthenic oil as a softening agent, 5 parts by weight of white pigment ("TPH-1618" manufactured by Toyo Ink Mfg. Co., Ltd.) and tackifying resin ("Arcon P100" manufactured by Arakawa Chemical Industry Co., Ltd.) 5
10 parts by weight of a white-based masterbatch prepared by mixing with 100 parts by weight is heated and mixed at 150 ° C., printing ink 5 is put into a heating vat 6, and transferred through a scraping roll 7 and a flexographic plate printing roll 8. Then, characters such as product names were printed by flexographic printing to form the printing layer 3.

[0013]

EFFECTS OF THE INVENTION Since the printing adhesive tape of claims 1 and 2 is constructed as described above, no primer is required for printing, and printing is easy regardless of the material of the support, and the quality is high. Good quality can be manufactured at low cost. In addition, since printing is performed after manufacturing the adhesive tape, it is possible to cope with small-lot production of a wide variety of products with different printing without lowering manufacturing efficiency. Further, in the printed pressure-sensitive adhesive tape according to the second aspect, the adhesiveness of the printing layer to the pressure-sensitive adhesive layer is good, and even when the pressure-sensitive adhesive tape is rewound or peeled from the non-adhered body, it does not peel from the pressure-sensitive adhesive layer. According to the third aspect of the present invention, various kinds of printing adhesive tapes can be efficiently produced in small quantities.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing an example of a printing adhesive tape of the present invention.

FIG. 2 is an explanatory diagram showing a printing process of the printing adhesive tape of the present invention.

[Explanation of symbols]

 1 Support 2 Adhesive Layer 3 Printing Layer 5 Printing Ink

Claims (3)

[Claims] 1. A printing adhesive comprising a transparent thermoplastic resin film on one surface of which a transparent pressure-sensitive adhesive layer is formed, and the pressure-sensitive adhesive layer is printed. tape. 2. A printing pressure-sensitive adhesive tape, wherein the printing according to claim 1 is carried out by heating and melting a printing ink in which a pigment is mixed in a hot-melt type resin. 3. A transparent pressure-sensitive adhesive is applied to one surface of a support made of a transparent thermoplastic resin film to form a pressure-sensitive adhesive layer, and the hot-melt resin is mixed with a pigment in the pressure-sensitive adhesive layer. A method for producing a printing pressure-sensitive adhesive tape, which comprises heating and melting a printing ink for printing.