Method and apparatus for producing crimped thermoplastics...

Details Method and apparatus for producing crimped thermoplastics... Method and apparatus for producing crimped thermoplastics...

D - Textiles, Paper

02

J

D02J 1/08 (2006.01) D02G 1/16 (2006.01)

Patent

CA 2234260

A method for producing a substantial helical or zig-zag crimp in a continuous filament (16) is described. The method comprises the steps of generating a turbulence in a thermoplastic material (12) intended to form the filament (16) whilst the thermoplastics material (12) is in its glass transition phase, and maintaining stresses induced in the formed filament (16) by said turbulence while the filament material passes into its crystallised phase.

L'invention concerne un procédé servant à produire un gaufrage sensiblement hélicoïdal ou en zigzag dans un filament continu (16). Ce procédé consiste à générer une turbulence dans un matériau thermoplastique (12), de manière à créer le filament (16), tandis que le matériau thermoplastique (12) est dans sa phase de transition vitreuse, et à maintenir les contraintes provoquées dans le filament obtenu (16) par ladite turbulence, tandis que le matériau du filament passe dans sa phase cristallisée.

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