Method of producing synthetic resin made articles having porous elastic member
US4994226A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 23, 1989 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Aug 23, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H2001/007
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of producing a synthetic resin made article having a porous elastic member, which is useful as an air duct opening/closing damper adaptable in air conditions for automobiles, including the steps of: PA1 placing a porous elastic member in position against the inner wall surface of one of the opposing segments of an injection mold splittable into two or more segments; PA1 closing said injection mold and compressing said porous elastic member by the clamping pressure; PA1 casting a synthetic molding resin along the surface of said porous elastic member; and PA1 applying a dwell pressure of a preset level for a prescribed period of time to the synthetic resin injected into said mold, and PA1 a method of producing a synthetic resin made article having porous elastic members, which is useful as an air duct opening/closing damper adapted in air conditions for automobiles, which includes the steps of: PA1 placing the porous elastic members in position against the inner wall surfaces of each pair of opposing segments of an injection mold splittable into two or more segments; PA1 closing said injection mold and compressing said two porous elastic members by clamping pressure while t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.