Hybrid yarn

Abstract

Described is a hybrid yarn consisting of at least two varieties of filaments, at least one variety (A) having a lower heat shrinkage and at least one variety (B) a higher heat shrinkage than the rest of the filaments of the hybrid yarn, wherein the first variety (A) of filaments has a dry heat shrinkage maximum of below 7.5%, the second variety (B) of filaments has a dry heat shrinkage maximum of above 10%, and its dry heat shrinkage tension maximum is so large that the total shrinkage force of the proportion of the second variety of filaments is sufficient to force the lower-shrinking filaments present to undergo crimping, the optionally present, further filament varieties (C) have dry heat shrinkage maxima within the range from 2 to 200% and at least one of the filament varieties (B) and/or (C) is a thermoplastic filament whose melting point is at least 10.degree. C., preferably 20.degree. to 100.degree. C., in particular 30.degree. to 70.degree. C., below the melting point of the lower-shrinking component of the hybrid yarn. Also described are a process for producing the hybrid yarn and the use of the hybrid yarn for producing permanent deformation capable textile sheet materials and fiber reinforced shaped articles.

Dependencies are inferred from the claim text.