JPS60217285A - Adhesive tape or sheet for simplified copying - Google Patents

Abstract

PURPOSE:To obtain the titled tape or sheet capable of clearly and easily copying the content of newspaper, etc., by laminating a transparent film with a slightly adhesive transparent composition containing minute spheres of an acrylic adhesive having a specific diameter and a specific liquid compound such as stearic acid. CONSTITUTION:(A) Minute spheres of an acrylic adhesive having particle diameter of 10-100mu (preferably 15-40mu) (e.g. obtained by the suspension polymerization of butyl acrylate, etc.) is mixed with (B) a liquid compound selected from stearic acid, lanolin, liquid surfactant (e.g. sorbitan monostearate ester, etc.) and silicone oil. The obtained slightly adhesive composition is applied to a surface of a transparent film (preferably cellulose acetate film), and dried to obtain the objective tape, etc. The amounts of stearic acid, lanolin, liquid surfactant and silicone oil are preferably 0.1-5pts.(wt.), 0.1-20pts., 0.1-20pts. and 0.1- 3pts. per 100pts. of the component A, respectively. EFFECT:Since there is no peeling of the paper, the copying can be repeated.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a method for copying articles printed in newspapers, magazines, etc., especially articles printed with newspaper ink (JIS K 5703'), and copying them into scrapbooks, notebooks, etc. This invention relates to an adhesive tape and sheet for simple copying that can be easily copied.

[Prior art]

Conventionally, to record and preserve newspaper articles, etc., it was necessary to copy them using a copy machine, cut them out with scissors, and paste them into scrapbooks, notebooks, etc., but copying them was expensive, and cutting them out with scissors was done only on the back side. The disadvantage was that the cutout could not be used and the remaining parts could not be used.

In order to eliminate the above-mentioned drawbacks, JP-A-58-3897 discloses a transparent pressure-sensitive adhesive composition containing a liquid plasticizer on a transparent film (adhesion force to Bakelite board: 30 to 4000 t).
A method for transferring ink 1 from a printed matter is described, which is characterized in that a transfer body coated with 725 Km) is bonded to the ink and then peeled off.

However, in the above method, adhesives such as acrylic adhesives, polyvinyl ether adhesives, and rubber adhesives are used as pressure-sensitive adhesive compositions, so in order to obtain clear copies, the pressure-sensitive adhesive composition layer is It is necessary to press the paper thickly and strongly, which has the disadvantage that a paper tearing phenomenon occurs when the paper is peeled off, making the copied newspaper unusable.

[Purpose of the invention]

The purpose of the present invention is to copy articles printed in newspapers, magazines, etc., especially articles printed with newspaper ink (JIS K 5703)-r, without causing paper tearing, and to easily copy articles into scrapbooks, notebooks, etc. An object of the present invention is to provide an adhesive tape or sheet for simple copying that can be used for copying.

[Structure of the invention]

The gist of the present invention is to provide a transparent slightly adhesive composition comprising acrylic pressure-sensitive adhesive microspheres with a particle size of 10 to 100 μm and a liquid compound selected from the group consisting of stearic acid, lanolin, liquid surfactant, and silicone oil. An adhesive tape for simple copying, which is laminated on one side of a transparent film, also exists in a mechanism sheet.

The microspheres used in the present invention are made of acrylic adhesive, and as the particle size becomes smaller, re-peelability decreases and the larger L unevenness becomes larger.
Fil is preferably 5 to 40μ. As the acrylic adhesive, any known adhesive mainly composed of acrylates such as butyl acrylate and 2-ethylhexyl acrylate can be used.

Any known method may be used to produce the microspheres, such as suspension polymerization when polymerizing acrylate, or adding solution polymerized acrylic adhesive solution to water, alcohol, etc. and stirring. Examples include methods of dispersing.

The liquid compound used in the present invention is selected from the group consisting of stearic acid, lanolin, liquid surfactants, and silicone oils. , fatty acid salts such as sodium stearate and lacrin fil calicum, anion activators such as sodium peroxybenzenesulfonate, sodium lauric sulfate, and triethanolamine monofatty acid ester salts, polyoxyethylene alkyl ether, polyoxy Examples include nonionic surfactants such as ethylene l1li fatty acid ester and sorbitan fatty acid ester. If the amount of the liquid compound added is small, it becomes difficult to copy, and if it is added, the adhesive composition becomes sticky, making it difficult to copy vJ# as an adhesive! , so the above @
To 100 parts by weight of the spheres, it is preferable to add 1 to 5 parts by weight of stearic acid, liquid lanolin, 20 parts by weight of surfactant (L1 to 20 parts by weight, and 3 parts by weight of silicone oil).

Although the transparent slightly adhesive composition of the present invention contains the above-mentioned microspheres and a liquid compound, conventionally known acrylic, rubber, silicone, etc. binders may be used as the binder; Adhesives are preferably used.

The adhesive strength of the Afi soup mentioned above is not particularly limited, but if a Bakelite board is used as the adherend,
10-200 when measured according to Z 1522
Preferably, it is f/25 silk cloth.

The transparent film used in the invention may be substantially transparent, and examples thereof include polypropylene film, polyvinyl chloride film, cellulose acetate 75-ilm, polyester film, polystyrene film, cellophane film, parchment paper, etc. Cellulose acetate film is preferably used.

The method for producing the adhesive tape or sheet for simple copying of the present invention is not limited to special requirements, and any method may be adopted. All you have to do is to mix the agents, apply it on one side of the transparent film and dry it.

〔Effect of the invention〕

The adhesive tape for simple copying of the present invention has the structure described above, and can be easily used by pasting it on a copying object such as a newspaper or magazine, peeling it off, and pasting it on a scrapbook, notebook, etc. You can copy the parts.

In particular, newspaper ink is a so-called composite ink, which is made by dissolving and dispersing carbon black, a fixing agent such as rosin, ester rubber, Giltonite, mineral oil such as petroleum resin, and mineral oil such as diesel oil, spindry oil, or machine oil. The adhesive tape of the present invention also works well because it uses varnish as a vehicle and has a low viscosity of 6-3 to 15 voids, and the newspaper is a porous newspaper with large fiber gaps printed with the above newspaper ink. With tape, newspaper articles can be reproduced particularly clearly without the phenomenon of paper tearing.

〔Example〕

Next, the present invention will be explained in detail.

Example In a Ie flask equipped with a stirrer, a thermometer and a condenser, 3215f of water, sodium alkyl allyl boriether sal 7onate (Triton X manufactured by Rohm & Haas)
-200) 5.8? and sodium hydroxide L7? of butyl acrylate 55f1 and heated while stirring.
2 ethylhexyl acrylate 42? , acrylic acid 3?
and penzoyl-oxide α299 67-72
The mixture was added within a temperature range of 0.degree. C. for suspension polymerization, and after the polymerization was completed, it was cooled, salted out, and dried to obtain a polymer. The diameter of the obtained microspheres was 30μ on average. The obtained polymer was mixed in a butanol/toluene (6/4) mixed solvent to obtain a microsphere dispersion with a solid content of 8%, and an acrylic adhesive (97 parts by weight of butyl acrylate and 3 parts by weight of acrylic acid) was added to the dispersion. (parts by weight of polymer) was added so that the solid content ratio was 674, and a small amount of zinc acetate was added to crosslink it, and then 100 parts by weight of a spheres were added.
Ester of sorbicun monostearate (based on parts by weight)
A slightly sticky composition was obtained by adding and mixing 10 parts by weight of Nonion 5P-60 (manufactured by NOF Corporation) and 1 part by weight of silicone oil. The obtained composition was applied to a transparent diacetate film having a thickness of 45 μm and a matte back surface and dried to obtain the adhesive tape of the present invention having a slightly adhesive composition layer laminated with a thickness of 20 μm. Ta. Adhesive strength of the obtained adhesive tape: 100f
It was 725M wide. Furthermore, wk#'s body was crushed and flattened. Furthermore, when the obtained adhesive tape was attached to newspaper and peeled off, it was easily peeled off without smearing, and a clear image was transferred to the adhesive tape. Also, when copying was repeated at the same spot on the newspaper, clear images were obtained up to 12 times.

patent applicant Sekisui Chemical Co., Ltd. Representative: Mototoshi Fujinuma 9-

Claims (1)

[Claims] 1. A transparent slightly adhesive composition containing acrylic adhesive microspheres with a particle size of 10 to 100 μm and a liquid compound selected from the group consisting of stearic acid, lanolin, liquid surfactant, and silicone oil is used to form a transparent film. An adhesive tape sheet for simple copying that is laminated on one side.