Method for the production of a polymer substrate with a...

Details Method for the production of a polymer substrate with a... Method for the production of a polymer substrate with a...

D - Textiles, Paper

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D04H 11/00 (2006.01) B29C 55/00 (2006.01) B29C 59/02 (2006.01) D04H 11/08 (2006.01)

Patent

CA 1087818

A METHOD FOR THE PRODUCTION OF A POLYMER SUBSTRATE WITH A FIBROUS SURFACE ABSTRACT OF THE DISCLOSURE The present invention relates to a process for the production of thermoplastic substrate with fibrous surfaces. The fibers of these surfaces are formed by drawing away from a heated surface a molten polymer component backed by an unmelted polymer residue layer or substrate. Simultaneous with the drawing, the nascent fibers are stabilized by cooling. For this purpose, cooling media are introduced in the fiber- forming zone. The thermoplastic polymer compounds should be applied in a thickness of at least 50 microns, and preferably 150 microns (when only 1 polymer forms the molten component), on a heated drawing surface of a drum or a conveyor belt apparatus. This invention relates to the production of fibrous surfaces on polymer substrates. Typically the substrates are in the form of webs. The use of webs makes the cooling process more efficient.

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