Foamable resin composition for foam sheet, foam sheet, process for preparing particulate polylactic acid and process for preparing foam sheet
US10508176B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2018 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | Mar 11, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2367/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed herein is a foamable resin composition for a foam sheet including polylactic acid resin particles, each of the particles having a particle size of about 1 μm to about 100 μm. A process for preparing a particulate polylactic acid resin includes: introducing a polylactic acid resin and then forming a molten polylactic acid spray solution; and injecting the molten polylactic acid spray solution by a melt spray method and simultaneously cooling the molten polylactic acid spray solution to obtain a particulate polylactic acid. In addition, disclosed herein is a process for preparing a foam sheet using the foamable resin composition for a foam sheet including a polylactic acid resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.