Invention Grant
- Patent Title: Injection molded plastic parts and method of forming
- Patent Title (中): 注射成型塑料件及成型方法
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Application No.: US929631Application Date: 1997-09-15
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Publication No.: US5965236APublication Date: 1999-10-12
- Inventor: Piero Durazzani
- Applicant: Piero Durazzani
- Applicant Address: ITX Pordenone
- Assignee: Electrolux Zanussi Elettrodomestici S.p.A.
- Current Assignee: Electrolux Zanussi Elettrodomestici S.p.A.
- Current Assignee Address: ITX Pordenone
- Priority: ITXPN96A0056 19961008
- Main IPC: D06F39/12
- IPC: D06F39/12 ; B29C45/00 ; B29C45/40 ; B29C45/73 ; B29L31/44 ; D06F37/26 ; B32B3/00 ; B29B7/00 ; D06F1/02
Abstract:
A large-sized and heavy part (1) of plastic material is injection molded. Localized zones are created in which the thermal conductance of the part (1) is higher in the surface impressions (10) at the mold ejectors for the removal of the part after it has been molded. In a preferred embodiment, the outer surface of the part (1) has, at the surface impressions (10), clusters of closed-bottom pits (13) formed by grids of mini-ribs (11) and (12) arranged perpendicularly with respect to each other. The thickness of the part varies from a maximum value (S1) at the periphery of the cavity to a minimum value (S2) at the bottom of a substantial number of the pits (13).
Public/Granted literature
- US5313366A Direct chip attach module (DCAM) Public/Granted day:1994-05-17
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