Patent ID: 6896761

Claim:
A method of manufacture of a composite product comprising at least one layer of reinforcing woven material and at least one layer of PTFE foil or ePTFE foil comprising the steps of: laminating said at least one layer of foil together with said at least one layer of woven material by heat and pressure, to form a laminated foil and woven material having a partial length and a preceding partial length, wherein said laminating is carried out at approximately 380° C. to 400° C. under a pressure of 0.1 to 20 N/mm 2 ; and cooling said laminated foil and woven material in a fully or partly fixed state, wherein said laminated foil and woven material is cooled under pressure, from about 300 to 420° C. to about 50° C. in about 0.1 to 240 seconds, wherein said laminating and cooling is conducted continuously whereby cooling of said partial length of said laminated foil and woven material is carried out simultaneously with the heating of said preceding partial length of said laminated foil and woven material.