Title:
FOAMED SHEET
Document Type and Number:
WIPO Patent Application WO/2020/054536
Kind Code:
A1
Abstract:
Provided is a foamed sheet that has heat resistance sufficient for inhibiting deformation of a container even when the container is heated in a microwave oven, and that is easy to handle due to having excellent sheet strength. This foamed sheet is obtained by foaming a styrene-based resin composition, wherein the styrene-based resin composition contains 55-90 parts by mass of a styrene-based resin (A) and 10-45 parts by mass of a polylactic acid (B) with respect to a total of 100 parts by mass of the styrene-based resin (A) and the polylactic acid (B), and the foamed sheet has a thickness of 0.5-3.5 mm, an expansion ratio of 1.1-20.0, an average foam size of 30-500 μm, a total volatile component amount of less than 800 μg/g, and a closed-cell ratio of 60% or more.
Inventors:
INOUE SHUJI (JP)
YOSHINO TAKAHIKO (JP)
OKADA TAKAAKI (JP)
TSUKADA MASASHI (JP)
YOSHINO TAKAHIKO (JP)
OKADA TAKAAKI (JP)
TSUKADA MASASHI (JP)
Application Number:
PCT/JP2019/034772
Publication Date:
March 19, 2020
Filing Date:
September 04, 2019
Export Citation:
Assignee:
TOYO STYRENE CO LTD (JP)
International Classes:
C08J9/04; B32B5/18; B32B27/30; C08L9/00; C08L25/04; C08L51/04; C08L67/04
Domestic Patent References:
| WO2016170964A1 | 2016-10-27 | |||
| WO2016098489A1 | 2016-06-23 |
Foreign References:
| JP2010077180A | 2010-04-08 | |||
| JP2000248100A | 2000-09-12 | |||
| JP2014118556A | 2014-06-30 | |||
| JP2010173263A | 2010-08-12 | |||
| JP2009155366A | 2009-07-16 | |||
| JPH07108637A | 1995-04-25 | |||
| JPH10337824A | 1998-12-22 | |||
| JP2018048248A | 2018-03-29 | |||
| US20080281010A1 | 2008-11-13 |
Attorney, Agent or Firm:
YAMAGUCHI Yoshihiro et al. (JP)
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