High rv filaments, and apparatus and processes for making...

Details High rv filaments, and apparatus and processes for making... High rv filaments, and apparatus and processes for making...

D - Textiles, Paper

01

F

D01F 6/60 (2006.01) C08G 69/06 (2006.01) C08G 69/30 (2006.01) C08G 69/46 (2006.01) D21F 7/08 (2006.01)

Patent

CA 2346098

The present invention relates to industrial high relative viscosity (RV) filaments, such as, for use in papermaking machine felts and other staple fiber applications. The invention is further directed to apparatus and processes for solid phase polymerization (SPP) of polyamide flake suitable for use, such as, in remelting and then spinning the industrial high RV filaments. The invention is also directed to processes for melt phase polymerization (MPP) of molten polymer for making the filaments.

La présente invention concerne des filaments industriels à viscosité relative élevée (RV), utilisés par exemple dans des feutres de machine à papier et dans d'autres applications de fibres discontinues. L'invention concerne aussi un dispositif et des procédés de polymérisation en phase solide (SPP) de flocons de polyamide convenant dans des applications telles que la refusion et le filage de filaments industriels à viscosité relative élevée. L'invention concerne aussi de procédés de polymérisation en phase fondue (MMP) de polymère en fusion destinés à fabriquer les filaments.

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