Polylactic acid formed body having a vapor-deposited film and method of producing the same
US9845175B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2013 |
| Grant date | Dec 19, 2017 |
| Priority date | — |
| Expiry date | Nov 26, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A polylactic acid formed body including a polylactic acid base material (1) and a hydrocarbon film (3) vapor-deposited on the surface of the base material by a plasma CVD method. The polylactic acid base material (1) exhibits a sharp X-ray diffraction peak in which a half-width of peak appearing in the 10°-25° wide angle X-ray measurement is not more than 1.22°, and the hydrocarbon film (3) is vapor-deposited on the surface of the polylactic acid base material (1), and includes two layers of a high CH2 layer (3a) having a ratio of CH2 per the total of CH, CH2 and CH3 of not less than 40% and a low CH2 layer (3b) formed on the high CH2 layer (3a) and having a ratio of CH2 per the total of CH, CH2 and CH3 of not more than 35%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.