Method for plastic coating foam molding insert
US5061428A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 4, 1990 |
| Grant date | Oct 29, 1991 |
| Priority date | — |
| Expiry date | Jan 4, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C41/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for forming a plastic coating for a foam molding insert or retainer member includes the steps of preforming an insert member having openings therethrough; partially sealing the openings and/or the perimeter edge of the insert member with protuberances formed on a conforming buck; completely sealing the openings and/or the perimeter edge by spraying polymeric material against the insert and the protuberances only in the vicinity of the hole and the perimeter edge to form seals without covering the insert with a film wrap; curing the seals to provide a leak proof patch which prevents foam leakage through the insert during a foam molding process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.