Method of making a cross linked pile product

Details Method of making a cross linked pile product Method of making a cross linked pile product

1976-10-15

1978-08-15

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264243, 264328, 264334, B29C 500, B29C 700, B29G 700

Patent

active

041072596

ABSTRACT:
A method of making a pile product comprising a plurality of relatively long, thin face fibers extending from a base by molding a crosslinkable polymeric material. During the formation of the fibers, crosslinking of the polymeric material is initiated by heat activating a substance incorporated in the polymeric material which promotes crosslinking. Crosslinking imparts hot strength to the pile fibers so that the pile product, while still hot, can be removed from the mold without materially deforming the fibers. Consequently, the time it takes to mold the pile product is significantly reduced, thereby increasing productivity and lowering the cost of the product. Moreover energy is conserved because the mold is not continuously cycled between high and low extremes in temperature.

REFERENCES:
patent: 3218373 (1965-11-01), Salyer
patent: 3235438 (1966-02-01), Wisotsky
patent: 3372139 (1968-03-01), Behr et al.

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