Preparation of synthetic resin-impregnated paper

Details Preparation of synthetic resin-impregnated paper Preparation of synthetic resin-impregnated paper

C - Chemistry, Metallurgy

09

J

9/51, 117/113.1

C09J 7/04 (2006.01)

Patent

CA 1053517

ABSTRACT OF THE DISCLOSURE The specification describes a process for the preparation of synthetic resin-impregnated self-adhesive or hest-sealable paper which comprises impregnating an absorbent paper with a self-cross-linkable synthetic resin having a particle size of less than 2 µm and coating at least one surface of the paper with a thermoplastic synthetic resin having a particle size of at least 20 µm, the synthetic resin being applied to the paper in aqueous medium and treatment of the paper with the said thermoplastic synthetic resin being effected simultaneously with, or subsequent to, treatment of the paper with the self-cross-linkable synthetic resin; and subsequently subjecting the treated paper to an elevated temperature to effect drying of the paper and cross-linking of the self- cross-llnkable synthetic resin. In order to improve the properties of the resulting paper, the above-mentioned absorbent paper may also be treated with a thermoplastic synthetic resin having a particle size of less that 2 µm. The paper produced in accordance with the above process may be bonded to a substrate by the application of heat and/or pressure.

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