Method for the production of a polymer substrate with a fibrous

Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Coating or impregnating workpiece before molding or shaping...

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264164, B29C 1700, B29F 500

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active

041838890

ABSTRACT:
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 substate. 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.

REFERENCES:
patent: 3390403 (1968-06-01), Van Tilburg
patent: 3708565 (1973-01-01), Seiffert
patent: 3814791 (1974-06-01), Jones
patent: 3860370 (1975-01-01), Fanto-Kuertoes
patent: 3976820 (1976-08-01), Giovanelli
patent: 3983278 (1976-09-01), Wardle
Anon, Mod. Plastics Encyclopedia, 1966, McGraw-Hill, N.Y., p. 265.
Floyd, Polyamide Resins, Reinhold, N.Y. (1958), pp. 11 & 41.

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