公开(公告)号：DE2065883A1

公开(公告)日：1976-10-14

申请号：DE2065883

申请日：1970-08-17

Applicant: TORAY INDUSTRIES

Inventor： OKAMOTO MIYOSHI ,  ASHIDA MEIICHI ,  WATANABE KOJ ,  TANIGUCHI SHINZO ,  OTSU SHIGA

IPC: D01D5/36 ,  D01D5/28

Abstract: Die for forming composite filaments has several cores of one filament material dispensed in a matrix of a second material. The core streams discharge into a chamber which converges at an angle Theta of =75 degrees and which is fed with an annular and pref. also an axial stream of the matrix material. Pref. subsidiary passages sheath each core sub-filament in matrix material (co-axial or eccentric). For preparation of multi-core filaments or for manufacture of very fine filaments by subsequently removing the matrix material. Die design maintains stable core and matrix patterns throughout long prodn. runs - the flow path of the core filament streams is almost linear to avoid material hang-up and degradation. Sheathing of each core stream by matrix material avoids internal coalescence of the core streams.