Method for making polyamide fibers

   
   

The invention relates to a process for manufacturing polyamide fibers having properties suitable and compatible for use as fibers for the manufacture of felt for paper machines. The process of the invention relates more particularly to the addition of stabilizers to the polyamide in order to obtain polyamide fibers having high properties, especially high resistance to light, heat and aggressive environments. The process of the invention consists in adding the stabilizer directly to the polyamide, without producing a preblend, and then in mixing the polyamide with the additive in an extruder for feeding the composition into a die for obtaining filaments.

A invenção relaciona-se a um processo para manufaturar as fibras do polyamide que têm as propriedades apropriadas e compatíveis para o uso como fibras para a manufatura do feltro para as máquinas de papel. O processo da invenção relaciona-se mais particularmente à adição dos estabilizadores ao polyamide a fim obter as fibras do polyamide que têm propriedades elevadas, especial resistência elevada à luz, calor e ambientes aggressive. O processo da invenção consiste em adicionar o estabilizador diretamente ao polyamide, sem produzir um preblend, e então em misturar o polyamide com o aditivo em um extruder para alimentar a composição em um dado para obter filamentos.

 
Web www.patentalert.com

< Modified polyamides, polyamide compositions, and method for making same

< Solvent systems

> Concentrated suspension of precipitation silica, processes for its preparation and uses of this suspension

> Method for masking polyisocyanates in emulsion

~ 00108