Apparatus and process for the production of pile surface...

Details Apparatus and process for the production of pile surface... Apparatus and process for the production of pile surface...

B - Operations, Transporting

29

D

18/542

B29D 7/22 (1980.01)

Patent

CA 1045322

ABSTRACT OF THE DISCLOSURE A process for the production of pile-surfaced material which comprises the steps of interposing a thermoplastic material between a backing and a sub- stantially smooth heated surface, holding the backing against the thermoplastic material so that bonding of the backing to the thermoplastic material and adhesion of the thermoplastic material to the heated surface occurs, parting the thermoplastic material from the heated surface over a bar so that fibrils are drawn out from the thermoplastic material between the backing and the heated surface, and hardening the fibrils as they are drawn out at least in part by a stream of cooling fluid directed at the side distant from the heated surface through the bar. The present process seeks to improve both the uniformity of pile produced by this type of process, to allow uniform piles to be produced at higher speeds than before possible and to provide a versatile process which is readily adaptable to produce varying types of pile.

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