Title:
ポリエチレン系樹脂押出発泡シート
Document Type and Number:
Japanese Patent JP6980590
Kind Code:
B2
Abstract:
This invention aims to provide a polyethylene resin extruded foam sheet having excellent compression properties and an excellent surface state while suppressing generation of wrinkle. The solution is a polyethylene resin extruded foam sheet having an apparent density of 18 kg/m3 or more and 90 kg/m3 or less and an average thickness of 5 mm or more and 30 mm or less. The ratio of the apparent density of the surface layer portion to the apparent density of the entire extruded foam sheet is 0.8 or more and 1.2 or less , wherein the surface layer portion is defined as a portion up to 10% of the average thickness from the surface of the extruded foam sheet to the center of the thickness direction. The average bubble diameter in the horizontal direction of the bubbles located on the outermost surface side of the extruded foam sheet is 1.5 mm or less, and the ratio of the average bubble diameter in the horizontal direction of the bubbles on the outermost surface side of the extruded foam sheet to the average bubble diameter in the horizontal direction of the entire extruded foam sheet is 0.8 or more and 1.2 or less. The ratio of the average bubble diameter in the thickness direction of the entire extruded foam sheet to the average bubble diameter in the horizontal direction of the entire extruded foam sheet is 1.0 or greater.
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Inventors:
Ryohei Takeuchi
Kei Nishimoto
Kei Nishimoto
Application Number:
JP2018063164A
Publication Date:
December 15, 2021
Filing Date:
March 28, 2018
Export Citation:
Assignee:
JSP Corporation
International Classes:
B29C44/24; B29C44/00; B32B5/18; B32B27/32; C08J9/12
Domestic Patent References:
| JP2003165858A |
Attorney, Agent or Firm:
Isamu Hosoi
Yukiko Kurita
Tasuke Sato
Yukiko Kurita
Tasuke Sato