公开(公告)号：US3601971A

公开(公告)日：1971-08-31

申请号：US3601971D

申请日：1969-04-11

申请人： SCRAGG & SONS

发明人： WATERHOUSE GEORGE

IPC分类号： D01D5/42 ,  E01B9/32 ,  D02G3/06

CPC分类号： E01B9/32 ,  D01D5/423 ,  Y10S57/907

摘要： A filament is made by curling a ribbon of suitable material transversely of its elongation, and drawing the curled ribbon. The resulting filament has a cross section resembling a tight spiral and may be hollow or solid. Thermoplastics may be used as the ribbon material. An apparatus and a method are disclosed for making this filament. This invention relates to filaments and methods and apparatus for making them.

公开(公告)号：US3649404A

公开(公告)日：1972-03-14

申请号：US3649404D

申请日：1969-07-14

申请人： SCRAGG & SONS

发明人： WATERHOUSE GEORGE

IPC分类号： B32B27/00 ,  D01D5/42 ,  B32B3/10 ,  B32B31/18

CPC分类号： D01D5/423 ,  B32B27/00 ,  Y10T156/1082 ,  Y10T156/1087 ,  Y10T428/31

摘要： FILAMENTS OF MAN-MADE MATERIALS SUITABLE FOR TEXTILE YARNS ARE PRDUCED BY FIRST FORMING A LAMINATE WHOSE LAMINAE HAVE INTERMITTENT BONDS AND HAVE DIFFERENT STRETCHING CHARACTERISTICS, AND THEN, BEFORE OF AFTER SLITTING INTO NARROW STRIPS, SUBJECTING THE LAMINATE TO A MECHANICAL TREATMENT WHICH COMPRISES STRETCHING, AND IF DESIRED SUCH OPERATIONS AS SCRATCHING, SCORING AND SCUFFING, TO CAUSE RUPTURE OF UNBONDED PARTS OF SOME OF THE LAMINAE AND THE FORMATION OF FIBRILS ON A MAIN STEM.