Method for producing semicrystalline polylactic acid articles
US7670545B2 · kind B2 · utility
12Cited by
13References
22Claims
0Family size
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Key dates
| Filing date | Jun 27, 2008 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Jun 27, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/004
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Amorphous sheets of PLA resins are thermoformed by heating the sheets until they become semicrystalline, and then forming the sheets on a relatively cold mold. Semicrystalline formed articles having improved heat resistance are made by the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.