Plastic molding having luster and method of molding the same
US5397610A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1993 |
| Grant date | Mar 14, 1995 |
| Priority date | — |
| Expiry date | Jan 29, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic molding produced by molding a resin composition comprising 98 to 50 parts by weight of a thermoplastic polyester resin (A) and 2 to 50 parts by weight of a resin (B) incompatible with the thermoplastic polyester resin (A), the resin (B) being dispersed in the resin (A), wherein the resin (B) has in a layer that is situated at an arbitrary depth from the outer surface of the plastic molding a substantially rodlike form satisfying the requirement represented by the following formulae (1) and (2) and is oriented in parallel to the outer surface of the plastic molding and in the direction of flow of the resin composition in molding: EQU 1.ltoreq.P/Q.ltoreq.10 (1) EQU (P+Q)/L.ltoreq.0.5 (2) wherein L, P and Q represent the size of the particle of said resin (B) and respectively have the following values: PA1 L: the average length (.mu.m) in the direction of stretching of the particle; PA1 P: the average major axis (.mu.m) in the case where a section perpendicular to the direction of stretching of the particle is approximated to be elliptical; and PA1 Q: the average minor axis (.mu.m) in the case where the section perpendicular to the direction of stretching of the particle is …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.