Method of insert molding plastic parts to provide covered edge surfaces
US5746962A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1996 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Sep 3, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/14196
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Improved methods of insert molding a laminated film or the like over a plastic substrate and fused film--plastic parts made thereby are disclosed. Improvement in traditional insert molding techniques is provided by use of a specific mold cavity structure which facilitates overlaying of the paint film over the desired edge portion of the plastic part. In the mold cavity portion corresponding to the part edge for which overlapping is desired, a special extension or pocket portion of the mold cavity is constructed. The pocket portion is bounded by a wall surface that extends or slopes from the female mold side (cavity side) of the mold to the male mold side. The painted side of the paint film laminate is inserted against this wall with the paint side of the paint film laminate facing the wall. During the injection molding process, the pressurized resin injected into the mold impinges upon the backing sheet side of the film forcing the film to extend along the wall. Deposition of the paint film along the wall and fusing of the backing sheet with the underlying resin thereat means that the part, after completion of the molding cycle, will include a paint film covered edge in contrast to…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.