Method for the manufacture of a hole in a component consisting of a composite material
US-2018326609-A1 · Nov 15, 2018 · US
Method of making a polylactic acid based article
US8936743B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8936743-B2 |
| Application number | US-201113285334-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 31, 2011 |
| Priority date | Nov 1, 2010 |
| Publication date | Jan 20, 2015 |
| Grant date | Jan 20, 2015 |
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Abstract
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A method of making a polylactic acid based article includes: (a) providing a sheet having a crystallinity ranging from 0% to 15% and including a polylactic acid polymer composition, the polylactic acid polymer composition having a polylactic acid polymer, a copolyester polymer, and a crystal nucleating agent; (b) heating the sheet to maintain a surface of the sheet at a temperature ranging from 95° C. to 105° C. while keeping the crystallinity of the sheet lower than 20%; and (c) thermoforming the sheet in a mold having a temperature ranging from 95° C. to 130° C. so as to form a polylactic acid based article having a crystallinity ranging from 35% to 45%.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of making a polylactic acid based article, comprising: (a) providing a sheet having a crystallinity ranging from 0% to 15% and including a polylactic acid polymer composition, the polylactic acid polymer composition having a polylactic acid polymer, a copolyester polymer, and a crystal nucleating agent; (b) heating the sheet to maintain a surface of the sheet at a temperature ranging from 95° C. to 105° C. while simultaneously keeping the crystall…
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Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
- B29C51/42Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US8936743B2 cover?
- A method of making a polylactic acid based article includes: (a) providing a sheet having a crystallinity ranging from 0% to 15% and including a polylactic acid polymer composition, the polylactic acid polymer composition having a polylactic acid polymer, a copolyester polymer, and a crystal nucleating agent; (b) heating the sheet to maintain a surface of the sheet at a temperature ranging from…
- Who is the assignee on this patent?
- Ciou Chi-Wei, Chang Li-Ling, Wu Roy, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B29C51/42. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 20 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).