Mold for press molding and process for press molding of thermoplastic resin using the same
US5336463A · kind A · utility
10Cited by
0References
10Claims
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Key dates
| Filing date | Dec 24, 1992 |
| Grant date | Aug 9, 1994 |
| Priority date | — |
| Expiry date | Dec 24, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/561
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Press molding is carried out by using a mold having a nozzle which opens and closes a molten resin passage provided in an upper half or a lower half and which is located 10-100 mm below a mold cavity side surface of the half, by supplying a thermoplastic resin to a cavity between the respective upper half and the lower half which is not closed and by clamping the mold. Thus, a molded article having a good appearance can be produced even when a molding cycle is short.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.