Thermoplastic coating compositions and process using same for th

Details Thermoplastic coating compositions and process using same for th Thermoplastic coating compositions and process using same for th

1989-10-06

1993-04-13

Marquis, Melvyn I.

Coating processes

Nonuniform coating

Mask or stencil utilized

427256, 427287, 427288, 4273743, 4273744, 4273981, 525221, 525227, B05D 132, B05D 500

Patent

active

052021629

ABSTRACT:
This invention provides for a coating composition comprising: (A) at least one polymeric material selected from (i) at least one homopolymer of ethylene having a melt index of at least about 220 grams per ten minutes as determined by ASTM D1238, condition 190/2.16, (ii) at least one copolymer of ethylene and a second ethylenically unsaturated monomer having a melt index of at least about 20 grams per ten minutes as determined by ASTM D1238, condition 190/2.16, or (iii) a mixture of (i) and (ii); and (B) at least one thermoplastic polymeric material different than (A) having a melting point in the range of about 80.degree. C. to about 130.degree. C. and being miscible with (A). The invention further provides for a process for applying the foregoing coating composition to a substrate such as glass, ceramic, metal, fiberboard, textile or plastic substrate (e.g., glass jars or bottles) preferably using hot melt screen printing; the process employs a low-temperature cure that requires only a relatively brief cure time (e g., less than about one second). The coating composition can be reheated to obtain higher gloss and/or enhance the adhesion of the coating to the substrate.

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patent: 4789699 (1988-12-01), Kieffer et al.
patent: 4803117 (1989-02-01), Daponte
patent: 4871810 (1989-10-01), Saltman

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