Process for producing automobile bumper made of synthetic resin
US6136249A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1998 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | May 11, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/921
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for producing a bumper of synthetic resin for use in an automobile, the bumper including a core and an outer layer covering the core. The process includes the steps of preparing a core forming material that includes a main component and a polyethylene added to the main component, the main component being produced by pulverizing a recovered bumper which has been formed using a polyolefin-based resin composition modified by an olefinic elastomer and which has a thermosetting synthetic resin coating film on its surface, and an outer layer forming material that includes the polyolefin-based resin composition modified by the olefinic elastomer and the polyethylene in a content A.sub.2 which is smaller than a content A.sub.1 of the polyethylene included in the core forming material (A.sub.2 <A.sub.1); injecting the outer layer forming material through a feed channel into a bumper molding cavity in a mold; injecting the core forming material to flow into the outer layer forming material located in the feed channel and the cavity, and allowing the outer layer forming material and the core forming material to flow into the cavity; and pushing the outer layer forming material and t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.