ELASTOMERIC WATEPROOF LAMINATE AND METHOD FOR MAKING SUCH ARTICLE

摘要

A composite layered article comprises (a) a layer of a hydrophobic material having an advancing water contact angle of at least 90 degrees, and (b) a layer of an elastomeric and hydrophilic material having a major portion of one surface in interlocking relationship with the hydrophobic layer. Both layers have a moisture vapour transmission rate of at least 1000 gns/m2/day. The composite is mechanically stretched in one direction at least 5% beyond the yield point of the hydrophobic layer, and then relaxed to form a stretchable composite.