Method of producing crimped yarn

Claim 1

A METHOD OF PRODUCING AN UNDISTORTED BULKY YARN HAVING A HIGH STRETCHABILITY WHICH COMPRISES (A) IMPARTING TO SEPPARATE THERMOPLASTIC SYNTHETIC MULTIFILAMENTS A PRELIMINARY TWIST AT 300 TO 800 T./M. IN THE S DIRECTION, ASSOCIATING 2 OR MORE ENDS OF THE TWISTED MULTIFILAMENTS, IMPARTING TO THE ASSOCIATED MULTIFILAMENTS A HIGH TWIST AT MORE THAN 800 T./M. IN THE S DIRECTION, SETTING THE RESULTING HIGH TWISTED FILAMENT BUNDLE, UNTWISTING THE SET FILAMENT BUNDLE AND SEPARATING THE UNTWISTED BUNDLE INTO THE ORIGINAL MULTIFILAMENTS TO OBTAIN FILAMENTS S, (B) INPARTING TO SEPARATE THEROMOPLASTIC SYNTHETIC MULTIFILAMENTS A PRELIMINARY TWIST AT 300 TO 800 T./M. IN THE A CIRECTION. ASSOCIATING 2 OR MORE ENDS OF THE TWISTED MULTIFILAMENTS, IMPARTING TO THE ASSOOCIATED MULTIFILAMENTS A HIGH TWIST AT MORE THAN 800 T./M. IN THE Z DIRECTION, SETTING THE RESULTING HIGH TWISTED FILAMENT BUNDLE, UNTWISTING THE SET FILAMENT AND SEPARATING THE UNTWISTED BUNDLE INTO THE ORIGINAL MULTIFILAMENTS TO OBTAIN FILAMENTS Z, AND (C) THEREAFTER COMBINING FILAMENTS S WITH FILAMENTS Z.

Claim 2

A METHOD OF PRODUCING AN UNDISTORTED BULKY YARN HAVING A HIGH STRETCHABILITY WHICH COMPRISES (A) IMPARTING TO SEPPARATE THERMOPLASTIC SYNTHETIC MULTIFILAMENTS A PRELIMINARY TWIST AT 300 TO 800 T./M. IN THE S DIRECTION, ASSOCIATING 2 OR MORE ENDS OF THE TWISTED MULTIFILAMENTS, IMPARTING TO THE ASSOCIATED MULTIFILAMENTS A HIGH TWIST AT MORE THAN 800 T./M. IN THE S DIRECTION, SETTING THE RESULTING HIGH TWISTED FILAMENT BUNDLE, UNTWISTING THE SET FILAMENT BUNDLE AND SEPARATING THE UNTWISTED BUNDLE INTO THE ORIGINAL MULTIFILAMENTS TO OBTAIN FILAMENTS S, (B) INPARTING TO SEPARATE THEROMOPLASTIC SYNTHETIC MULTIFILAMENTS A PRELIMINARY TWIST AT 300 TO 800 T./M. IN THE A CIRECTION. ASSOCIATING 2 OR MORE ENDS OF THE TWISTED MULTIFILAMENTS, IMPARTING TO THE ASSOOCIATED MULTIFILAMENTS A HIGH TWIST AT MORE THAN 800 T./M. IN THE Z DIRECTION, SETTING THE RESULTING HIGH TWISTED FILAMENT BUNDLE, UNTWISTING THE SET FILAMENT AND SEPARATING THE UNTWISTED BUNDLE INTO THE ORIGINAL MULTIFILAMENTS TO OBTAIN FILAMENTS Z, AND (C) THEREAFTER COMBINING FILAMENTS S WITH FILAMENTS Z.