公开(公告)号：DE69729700D1

公开(公告)日：2004-08-05

申请号：DE69729700

申请日：1997-10-09

Applicant: TORAY INDUSTRIES

Inventor： YAMANAKA SHUICHI ,  SHINTO MASAKATSU ,  MORIKAWA HARUKI ,  MIYOSHI TOSHIYUKI ,  ONO KEIZO ,  ENDO MAKATO ,  YAMAZAKI JUN

IPC: D01F6/18 ,  D01F9/22

Abstract: This invention relates to a precursor fiber bundle for production of a carbon fiber bundle, a process for producing the precursor fiber bundle, a carbon fiber bundle produced with the precursor fiber bundle, and a process for producing the carbon fiber bundle. A percursor fiber bundle according to the invention has a fineness being in the range of from 300,000 denier to 1,500,000 denier and has a potential dividability to sub-tows each of which has a fineness being in the range of from 50,000 denier to 250,000 denier. The precursor fiber bundle is obtained by dividing a multifilament made of an acrylic copolymer spun from a spinnerette into a plurality of sub-tows, drawing the sub-tows in this state, and after that converging the sub-tows into one tow with overlapping adjacent sub-tows at a side edge portion thereof. The converging is practiced typically by passing the overlapped sub-tows through a crimping apparatus. A carbon fiber bundle according to the invention is produced by dividing the precursor fiber bundle into the sub-tows and after that treating the sub-tows by passing thereof through stabilizing and carbonizing processes.

公开(公告)号：DE69729700T2

公开(公告)日：2004-12-09

申请号：DE69729700

申请日：1997-10-09

Applicant: TORAY INDUSTRIES

Inventor： YAMANAKA SHUICHI ,  SHINTO MASAKATSU ,  MORIKAWA HARUKI ,  MIYOSHI TOSHIYUKI ,  ONO KEIZO ,  ENDO MAKATO ,  YAMAZAKI JUN

IPC: D01F6/18 ,  D01F9/22

Abstract: This invention relates to a precursor fiber bundle for production of a carbon fiber bundle, a process for producing the precursor fiber bundle, a carbon fiber bundle produced with the precursor fiber bundle, and a process for producing the carbon fiber bundle. A percursor fiber bundle according to the invention has a fineness being in the range of from 300,000 denier to 1,500,000 denier and has a potential dividability to sub-tows each of which has a fineness being in the range of from 50,000 denier to 250,000 denier. The precursor fiber bundle is obtained by dividing a multifilament made of an acrylic copolymer spun from a spinnerette into a plurality of sub-tows, drawing the sub-tows in this state, and after that converging the sub-tows into one tow with overlapping adjacent sub-tows at a side edge portion thereof. The converging is practiced typically by passing the overlapped sub-tows through a crimping apparatus. A carbon fiber bundle according to the invention is produced by dividing the precursor fiber bundle into the sub-tows and after that treating the sub-tows by passing thereof through stabilizing and carbonizing processes.

公开(公告)号：HU9701651D0

公开(公告)日：1997-12-29

申请号：HU9701651

申请日：1997-10-14

Applicant: TORAY INDUSTRIES

Inventor： ENDO MAKOTO ,  MIYOSHI TOSHIYUKI ,  MORIKAWA HARUKI ,  ONO KEIZO ,  SHINTO MASAKATSU ,  YAMANAKA SHUICHI ,  YAMAZAKI JUN

IPC: D01F6/18 ,  D01F9/22

Abstract: This invention relates to a precursor fiber bundle for production of a carbon fiber bundle, a process for producing the precursor fiber bundle, a carbon fiber bundle produced with the precursor fiber bundle, and a process for producing the carbon fiber bundle. A percursor fiber bundle according to the invention has a fineness being in the range of from 300,000 denier to 1,500,000 denier and has a potential dividability to sub-tows each of which has a fineness being in the range of from 50,000 denier to 250,000 denier. The precursor fiber bundle is obtained by dividing a multifilament made of an acrylic copolymer spun from a spinnerette into a plurality of sub-tows, drawing the sub-tows in this state, and after that converging the sub-tows into one tow with overlapping adjacent sub-tows at a side edge portion thereof. The converging is practiced typically by passing the overlapped sub-tows through a crimping apparatus. A carbon fiber bundle according to the invention is produced by dividing the precursor fiber bundle into the sub-tows and after that treating the sub-tows by passing thereof through stabilizing and carbonizing processes.