Title:
ＳＭＣの製造方法
Document Type and Number:
Japanese Patent JP7115648
Kind Code:
B2
Abstract:
Provided is a useful improvement in a manufacturing method of a CF-SMC using a partially split continuous carbon fiber bundle. The manufacturing method of an SMC of the present invention includes (i) a step of drawing out a continuous carbon fiber bundle (10) from a package, the continuous carbon fiber bundle (10) having a filament number of NK and partially split into n sub-bundles in advance, (ii) a step of chopping the continuous carbon fiber bundle (10) drawn out from the package with a rotary cutter (234) into chopped carbon fiber bundles (20), and (iii) a step of depositing the chopped carbon fiber bundles (20) on a carrier film (41) traveling below the rotary cutter (234) to form a carbon fiber mat (30). In the manufacturing method, due to a fragmentation processing, in which at least some of the chopped carbon fiber bundles before being deposited on the carrier film (41) are fragmented by being brought into contact with a rotating body, a distribution of the filament number of the chopped carbon fiber bundles in the carbon fiber mat (30) is made different from that when the fragmentation processing is not performed.
Inventors:
Waterfowl Yukihiro
Koji Kanehagi
Yasu Watanabe
Samejima Sadao
Koji Kanehagi
Yasu Watanabe
Samejima Sadao
Application Number:
JP2021573105A
Publication Date:
August 09, 2022
Filing Date:
January 14, 2021
Export Citation:
Assignee:
Mitsubishi Chemical Corporation
International Classes:
B29B11/16; B65H54/02; B65H54/28; B65H55/04
Domestic Patent References:
| JP2017177522A | ||||
| JP7257818A | ||||
| JP9012220A |
Foreign References:
| WO2019151076A1 | ||||
| WO2017221655A1 | ||||
| WO2017006989A1 | ||||
| WO2017111056A1 |
Attorney, Agent or Firm:
田▲崎▼ 聡
Shunsuke Fushimi
Kazunori Onami
Shunsuke Fushimi
Kazunori Onami