Method for overmolding sink marks for an automotive component
US6551540B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 2000 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Oct 2, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/0414
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method, molding device and vehicle component (10) provide for minimized sink marks (30) caused by structural ribs (28) in the molding process. Molten material is injected into a first mold cavity to form a primary vehicle component part (20) having structural ribs (28) on a back side. Typically, sink marks (30) may develop at a front surface of the primary vehicle component part (20), located opposite to the structural ribs (28) on the back side. Molten material is injected into a second molding cavity that is arranged to overmold the front surface (26) of the primary vehicle component part (20) and to cover sink marks (30), if any, in the front surface (26). In this manner, a vehicle component (10) is manufactured with structural ribs (28) and without visible sink marks (30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.