Premolded case and method for manufacturing the same

Abstract

To provide a pre-molded case including a combination of multiple components that can prevent leakage of the molding material during transfer molding. [Solution] A pre-molded case comprising a first member having a first through-hole, a second member having a second through-hole, a thermoplastic material interposed between the first member and the second member, and a third member inserted through the first and second through-holes, wherein the thermoplastic material seals at least a portion of the gap formed by the first and second through-holes and the third member.

Claims

1. A pre-molded case comprising a first member having a first through-hole, a second member having a second through-hole, a thermoplastic material interposed between the first member and the second member, and a third member inserted through the first and second through-holes, wherein the thermoplastic material seals at least a portion of the gap formed by the first and second through-holes and the third member.

2. The pre-molded case according to claim 1, wherein the first member and the second member are joined together by the thermoplastic material.

3. The pre-molded case according to claim 1 or 2, wherein the thermoplastic material mainly comprises an amorphous thermoplastic resin.

4. The pre-molded case according to claim 3, wherein the amorphous thermoplastic resin is at least one selected from the group consisting of thermoplastic epoxy resins and phenoxy resins, the thermoplastic epoxy resin is a polymer of (a) a bifunctional epoxy resin monomer or oligomer and (b) a bifunctional compound having two identical or different functional groups selected from the group consisting of phenolic hydroxyl groups, carboxyl groups, mercapto groups, isocyanate groups and cyanate ester groups (excluding polyhydroxy polyethers synthesized from bisphenol compounds and epichlorohydrin), and the phenoxy resin is a polyhydroxy polyether synthesized from bisphenol compounds and epichlorohydrin.

5. The pre-molded case according to claim 3, wherein the thermoplastic material comprises an epoxy equivalent of 1,600 g / eq. or more, or an amorphous thermoplastic resin that does not contain epoxy groups.

6. The pre-molded case according to claim 1 or 2, wherein the first member has a convex structure around the first through hole, and the second member has a concave structure that fits into the convex structure.

7. To provide a first member having a first through hole and a second member having a second through hole, A third member is prepared with a thermoplastic material arranged around it, Insert the third member into the first through-hole and the second through-hole such that the thermoplastic material is positioned between the first member and the second member, The thermoplastic material is heated to soften or melt it, The first member and the second member are pressed together with the thermoplastic material to seal at least a portion of the gap formed by the first through hole, the second through hole and the third member with the thermoplastic material. A method for manufacturing pre-molded cases, including [the specified part of the method].

8. The method according to claim 7, wherein the first member and the second member are joined together by the thermoplastic material.

9. The method according to claim 7 or 8, wherein the thermoplastic material mainly comprises an amorphous thermoplastic resin.

10. The method according to claim 9, wherein the amorphous thermoplastic resin is at least one selected from the group consisting of thermoplastic epoxy resins and phenoxy resins, the thermoplastic epoxy resin is a polymer of (a) a difunctional epoxy resin monomer or oligomer and (b) a difunctional compound having two identical or different functional groups selected from the group consisting of phenolic hydroxyl groups, carboxyl groups, mercapto groups, isocyanate groups and cyanate ester groups (excluding polyhydroxy polyethers synthesized from bisphenol compounds and epichlorohydrin), and the phenoxy resin is a polyhydroxy polyether synthesized from bisphenol compounds and epichlorohydrin.

11. The method according to claim 9, wherein the thermoplastic material comprises an epoxy equivalent of 1,600 g / eq. or more, or an amorphous thermoplastic resin that does not contain epoxy groups.

12. The method according to claim 7 or 8, wherein the first member has a convex structure around the first through hole, and the second member has a concave structure that fits into the convex structure.

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