Polyurethane roller coating process for carpet backing

Details Polyurethane roller coating process for carpet backing Polyurethane roller coating process for carpet backing

2004-10-08

2009-12-29

Juska, Cheryl (Department: 1794)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C156S077000, C156S078000, C156S331700, C156S324000, C427S355000, C427S372200, C427S373000, C427S377000, C427S378000, C427S389900

Reexamination Certificate

active

07638008

ABSTRACT:
A method for preparing carpet by using polyurethane to anneal secondary backing to a greige, comprising fibers attached to a primary backing. The polyurethane monomers are mixed just prior to application to the greige primary backing allowing the relatively low viscosity polyurethane to penetrate the fibers of the primary backing to aid in fiber lock. The polyurethane is puddle between two rollers that coat a layer of polyurethane onto the greige. The polyurethane coated greige is then contacted with the secondary backing before complete polymerization to insure sufficient tack to hold the backings together resulting in a durable carpet requiring a relatively low weight of polyurethane monomers.

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