| 发明名称 |
METHOD FOR MANUFACTURING PRESS MOLDED PRODUCT AND MANUFACTURING APPARATUS FOR PRESS MOLDED PRODUCT |
| 摘要 |
A method for manufacturing a press-molded product by cold-pressing a composite material containing a discontinuous carbon fiber and a thermoplastic resin, is provided. The method satisfies equations (1) and (2) and includes Steps 1 to 5:;Step 1 is a step of placing a heated composite material in a mold;;Step 2 is a step of allowing 1 second or less between pressurization start time t0 and time t1 of reaching flow starting pressure Pf;;Step 3 is a step of reaching maximum pressure Pm at time t2;;Step 4 is a pressure holding step of pressing the composite material at an average holding pressure Pk from time t2 to time t3; and;Step 5 is a step of opening the mold and taking out a molded product from the mold;;4<Pf/t1<7,500 [MPa/sec]; and equation (1):;45<Pk×(t3−t2)<5,400 [MPa·sec]. equation (2): |
| 申请公布号 |
US2016250785(A1) |
申请公布日期 |
2016.09.01 |
| 申请号 |
US201615054819 |
申请日期 |
2016.02.26 |
| 申请人 |
Teijin Limited |
发明人 |
Shimotake Ryo;Yokomizo Hodaka |
| 分类号 |
B29C43/58;B29C43/02;B29C43/52;B29C43/00 |
主分类号 |
B29C43/58 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for manufacturing a press-molded product by cold-pressing a composite material containing a discontinuous carbon fiber and a thermoplastic resin, the method satisfying equations (1) and (2) and comprising:
placing a heated composite material in a mold; allowing 1 second or less between pressurization start time t0 and time t1 of reaching flow starting pressure Pf; reaching maximum pressure Pm at time t2; pressing the composite material at an average holding pressure Pk from time t2 to time t3; and opening the mold and taking out a molded product from the mold;
4<Pf/t1<7,500; and equation (1):45<Pk×(t3−t2)<5,400, equation (2): wherein a unit of Pf/t1 is MPa/sec and a unit of Pk×(t3−t2) is MPa·sec. |
| 地址 |
Osaka JP |
