公开(公告)号：JPH0841240A

公开(公告)日：1996-02-13

申请号：JP69095

申请日：1995-01-06

Applicant: POLTECO INC

Inventor： ANAGUNOSUTEISU II ZAKARAIADESU ,  PUREMARU SHIYUKURA

IPC: A01K91/00 ,  A61C15/04 ,  B29C55/00 ,  B29D7/01 ,  C08J9/28 ,  D01F6/04

Abstract: Thermoplastic tape, ribbon or line material is prepd. as follows: (a) a melt-crystallised precursor polyethylene tape (I) of mol. wt. above 300,000 is immersed in a liq. bath at ca. 130 [deg]C until it has swelled into a pseudo-gel state; (b) the swollen tape is compressed lightly then treated with a solvent to remove all residual bath liq.; (c) the tape is heated to remove all residual solvent and provide a dried porous prod. with higher porosity than the original (I); (d) the prod. is compressed at 100,300,000 psi (depending on the thickness), and (e) the tape is stretched at 80-130 [deg]C to afford a drawn prod. with increased mechanical props. including a modulus 0.5-100 GPa, and tensile strength 0.1-2 GPa.