Adhesive paper for copying

Details Adhesive paper for copying Adhesive paper for copying

1988-06-28

1990-08-07

Lesmes, George F.

Stock material or miscellaneous articles

Layer or component removable to expose adhesive

Halogen containing compound

428 84, 428192, 428211, 428345, 428514, B32B 306, B32B 308, B32B 706, B32B 712

Patent

active

049467280

ABSTRACT:
In an adhesive paper for copying prepared by laminating an overlying sheet with a release sheet so that an adhesive layer coated on the bottom surface of said overlying sheet is in contact with the releasing surface of said release sheet, the improvement comprising a radiation-induced polymer layer having a glass transition temperature ranging from 50.degree. to 200.degree. C., applied to at least one edge face of said adhesive paper for copying, said radiation-induced polymer layer being formed by applying a solvent free radiation polymerizable composition to said edge face followed by irradiation curing. The presence of the radiation-induced polymer layer prevents an adhesive from squeezing out. The polymer layer, because of its specific glass transition temperature, will not break and fall off. Thus a copying machine will not be contaminated with squeezed adhesive or broken and fallen polymer layer during copying. Further, the solvent-free and radiation polymerizable nature of the polymer layer-forming composition ensures the sheets not to curl.

REFERENCES:
patent: 4624893 (1986-11-01), Shibano et al.
patent: 4713274 (1987-12-01), Minor
Japanese Laid Open Publication (Abstract) 159,874/84.
Japanese Laid Open Publication (Abstract) 10,353/75.

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