Device and method for manufacturing multilayer molded article
US11498127B2 · kind B2 · utility
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2References
7Claims
0Family size
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Key dates
| Filing date | Aug 10, 2017 |
| Grant date | Nov 15, 2022 |
| Priority date | — |
| Expiry date | Dec 4, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2003/033
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A die having a cavity and a lower punch fitted into the cavity. The cavity is divided and the parts slide along a division plane passing through the cavity parallel to the fitting direction of the die and the lower punch. The divided cavity parts are placed in a state of alignment along the division plane. The divided cavity parts are each filled with raw material powder. The die and the lower punch are then slid along the division plane, whereby the divided cavity parts are combined as the original cavity. The raw material powder in the cavity in a combined state is compressed by an upper punch and the lower punch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.