公开(公告)号：US3777470A

公开(公告)日：1973-12-11

申请号：US3777470D

申请日：1972-02-09

Applicant: ASAHI CHEMICAL IND

Inventor： SUZUKI I ,  OHMURA J ,  SATOO Y

IPC: B65H54/02 ,  B65H57/04 ,  D02G3/32 ,  D01H1/00 ,  D01H7/92

CPC classification number: D02G3/328 ,  B65H54/026 ,  B65H57/04 ,  B65H2701/319

Abstract: This invention concerns with a process for the preparation of a yarn package which comprises a plurality of polyurethane elastic yarns wound up on a single bobbin. The yarns are arranged substantially in a plane when seen laterally of the yarn group and provisionally bonded together for providing the possibility of re-separation into the constituent yarns at a later rewinding stage of the package. According to the invention, a plurality of groups of multifilaments comprising essentially polyurethane as extruded are passed through a corresponding number of false twisters, so as to group the respective filaments together to such a degree that the related filaments are partially fused together to set a mutual core-to-core material communication, yet having a solidified surface skin except the thus realized material communication areas on the filaments. Then, at least two of the yarns of multifilaments are jointly passed through a skew-grooved traverse for provisionally bonding these yarns together so as to realise a skin-to-skin co-bonding, for ready for winding into a yarn package on a single bobbin tube.

Abstract translation: 本发明涉及一种用于制备纱线包装的方法，该纱线包装包含多个聚氨酯弹性纱线卷绕在单个筒管上。 当纱线组侧向观察时，纱线基本上布置在平面上，并且临时粘合在一起，以提供在包装的后续重绕阶段再分离成组合纱线的可能性。