公开(公告)号：SG11201912848SA

公开(公告)日：2020-01-30

申请号：SG11201912848S

申请日：2018-08-24

Applicant: TORAY INDUSTRIES

Inventor： SUZUKI TAKAFUMI ,  SENTO YUICHIRO ,  IMAI NAOKICHI ,  HAMAGUCHI MITSUSHIGE ,  HONMA MASATO

IPC: B29C45/14 ,  B29C70/12 ,  B32B5/28

Abstract: The following configuration is adopted for the purpose of solving reduction in strength and rigidity at a weldline which is a problem of an injection molding body, and enabling free design such as thin wall molding or complex shape molding of the injection molding body. That is, there is providedan integrally molded body in which a substrate for reinforcement (a) having a discontinuous fiber (a1) and a resin (a2) and an injection molding body (b) having a discontinuous fiber (b1) and a resin (b2) are integrated,the substrate for reinforcement (a) covering a part or all of a weldline of the injection molding body (b) to be integrated with the injection molding body (b),the ratio of thickness Ta of the substrate for reinforcement (a) to thickness T of a weldline part of the integrally molded body satisfying relational expression:in a case of Ea ≠ Ebw,Ta/T≤Ebw−√Ea⋅Ebw/Ebw−Eain a case of Ea = Ebw,Ta/T≤0.5wherein, Ta: Thickness of substrate for reinforcement (a),T: Thickness of weldline part of integrally molded body,Ea: Flexural modulus of substrate for reinforcement (a) in width direction of weldline, andEbw: Flexural modulus of weldline of injection molding body (b) in width direction of weldline.

公开(公告)号：SG11201912492XA

公开(公告)日：2020-01-30

申请号：SG11201912492X

申请日：2018-08-24

Applicant: TORAY INDUSTRIES

Inventor： SUZUKI TAKAFUMI ,  SENTO YUICHIRO ,  IMAI NAOKICHI ,  HAMAGUCHI MITSUSHIGE ,  HONMA MASATO

IPC: B29C45/14 ,  B29C70/20 ,  B29K105/12 ,  B29L9/00 ,  B32B5/28

Abstract: In order to solve reduction in strength and rigidity at a weldline which is a problem of an injection molding body, and enable free design such as thin wall molding or complex shape molding of the injection molding body, there is provided an integrally molded body in which a substrate for reinforcement (a) having a discontinuous fiber (a1) and a resin (a2) and an injection molding body (b) having a discontinuous fiber (b1) and a resin (b2) are integrated, in which the substrate for reinforcement (a) has a difference in an orientation angle of the discontinuous fiber (a1) in each of regions obtained by dividing a major axis direction of the substrate for reinforcement (a) into 10 equal parts of within 10°, and the substrate for reinforcement (a) covers a part or all of a weldline of the injection molding body (b) to be integrated with the injection molding body (b).