Continuous solid state web coating process and webs produced the

Details Continuous solid state web coating process and webs produced the Continuous solid state web coating process and webs produced the

1997-07-22

2000-06-20

Lam, Cathy F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including grain, strips, or filamentary elements in...

428 74, 428137, 604359, 604366, 604367, 604370, 604372, 604373, 604378, 442 59, B32B 512, A61F 1315

Patent

active

060775882

ABSTRACT:
One or more particulate active agents are fused to the surface of a substrate web by mixing the particulate agents with a particulate binder having a particle size not exceeding an average diameter of approximately 40 microns and coating the composite mixture onto the surface of the substrate. Thereafter, the coated substrate is heated to a temperature equal to or greater than the Vicat softening temperature of the binder and compressed within the nip of a pair of pressure rolls to achieve fusion. If desired, a top layer may be placed upon the coated composite prior to the compression step. Also disclosed are various products manufactured by the process.

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Microthene .RTM.F Microfine Polyolefin Powders, U.S.I. Chemicals booklet, copyright 1980.

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