Low-shrinkage hybrid yarns production thereof and use thereof

Details Low-shrinkage hybrid yarns production thereof and use thereof Low-shrinkage hybrid yarns production thereof and use thereof

1998-10-15

2000-08-29

Stryjewski, William

Textiles: spinning, twisting, and twining

Apparatus and processes

Twist setting

57285, 57351, 57908, 28247, D01H 746

Patent

active

061090166

ABSTRACT:
The low-shrinkage hybrid yarns comprise reinforcing filaments and matrix filaments composed of thermoplastic polymers having a lower melting point than the melting or decomposition point of the reinforcing filaments. The yarns are characterized by a 160.degree. C. hot air shrinkage of not more than 2% and a 200.degree. C. hot air shrinkage of not more than 5%. A process for producing these hybrid yarns includes the steps of feeding yarn strands moving at different speeds into an entangling jet, heating a matrix feed yarn during the feeding thereof into the entangling jet, entangling the feed yarn strands, and taking off the strands with or without shrinkage and additional heating.

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