Patent Number: 8,506,749

Title: Method of improving adhesive coverage to maximize waterproofness while maintaining breathability of adhesively laminated webs, and laminates produced thereby

Abstract: A method of forming a composite fabric includes bonding an adhesive layer to a web such that the adhesive layer conforms to surfaces of the web without sealing all web pores, and bonding a barrier layer to the adhesive layer, wherein the composite fabric MVT is at least 25% of the barrier layer MVT; and/or the composite fabric air permeability is at least 20% of the barrier layer air permeability. A composite fabric includes a web, a barrier layer and an adhesive layer therebetween, wherein: (a) the adhesive layer is conformingly bonded to structural members of the web without sealing all pores; (b) the adhesive layer is bonded to the barrier layer; (c) the composite fabric hydrostatic resistance is greater than 200 mbar; and (d) the composite fabric moisture transmission rate is greater than 600 g/m.sup.2/24 h and greater than 3000 g/m.sup.2/24 by ASTM E96, procedures B and BW, respectively.

Inventors: Colasanto; Thomas C. (Tolland, CT), Deasey; Susan M. (Oxford, MA)

Assignee: Dartex Coatings, Inc.

International Classification: B32B 33/00 (20060101); B29C 65/00 (20060101); B44C 1/17 (20060101); B32B 37/00 (20060101); B32B 7/14 (20060101); D04H 13/00 (20060101)

Expiration Date: 2021-08-13 0:00:00