Patent ID: 6764756
Filing Date: 2004-07-20
Classification: B32B,Y10T

Abstract:
A multilayer composite structure, comprising:a. a first foam layer comprising polyethylene homopolymer or copolymer: b. a second foam layer comprising polypropylene homopolymer or copolymer, and c. a coating disposed between and bonding said first and second foam layers together at a bond strength of at least about 4 lbf/inch, said coating having a thickness ranging from about 1 to about 6 mils and comprising at least one member selected from the group consisting of ethylene/propylene rubber, homogeneous ethylene/alpha-olefin copolymer, and ethylene/acrylic acid copolymer, wherein said polyethylene foam layer has a thickness ranging from about {fraction (1/16)} to about 1 inch and said polypropylene foam has a thickness ranging from about 1 to about 4 inches, and said composite structure is in the form of a flotation article.