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1.发明授权Method to produce spun-drawn polycaprolactam yarn having improved resistance to ozone fading 失效生产具有改善耐臭氧性能的聚酰胺酰胺纱线的方法
公开(公告)号：US3732346A
公开(公告)日：1973-05-08
申请号：US3732346D
申请日：1970-08-10
Applicant: ALLIED CHEM
Inventor： MALLONEE W , SAUNDERS P
Abstract: AA CONTINUOUS PROCESS AND ITS PRODUCT FOR SPINNING AND DRAWING POLYCARPROAMIDE FILAMENTS IS DISCLOSED. THE METHOD IS THE COUPLED OR CONTINUOUS PROCESS OF EXTRUDING FILAMENTS, COOLING AND APPLYING FINISH, THEN IMMEDIATELY DRAWING THE FILAMENTS. THE IMPROVED RESISTANCE TO OZONE FADING IS ACCOMPLISHED BY FEEDING THE FILAMENTS AFTER THE FINISH APPLYING STEP WITH A HEATED FEED ROLL THROUGH AN AIR COOLING JET TO A COOLED DRAW ROLL AND WITHDRAWING FILAMENTS TO A SECOND DRAW ROLL, THEN WINDING THE FILAMENTS INTO A PACKAGE.
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