Title:
POLYOLEFIN-BASED BIOMASS SHRINK FILM
Document Type and Number:
WIPO Patent Application WO/2023/132301
Kind Code:
A1
Abstract:
[Problem] To provide a polyolefin-based biomass shrink film that achieves a reduced environmental load without impairing suitability for printing and has excellent transparency even after heat shrink packaging. [Solution] This polyolefin-based biomass shrink film is configured from five layers of a surface layer, an intermediate layer, a core layer, another intermediate layer, and another surface layer in this order. The two surface layers are formed from a surface layer-forming resin composition that contains prescribed amounts of a propylene-based resin (A), an anti-blocking agent (B), and a slip agent (C), respectively. The two intermediate layers are formed from an intermediate layer-forming resin composition that contains prescribed amounts a propylene-based resin (A), an anti-blocking agent (B), and a slip agent (C), respectively. The core layer is formed from a core layer-forming resin composition that contains prescribed amounts of a propylene-based resin (A), an anti-blocking agent (B), a slip agent (C), and a biomass-derived ethylene-based resin (D), respectively. The degree of biomass is 10% or higher.
Inventors:
NAKANISHI DAI (JP)
TANIOKA NAOMI (JP)
OYAMA TOSHIKATSU (JP)
TANIOKA NAOMI (JP)
OYAMA TOSHIKATSU (JP)
Application Number:
PCT/JP2022/048025
Publication Date:
July 13, 2023
Filing Date:
December 26, 2022
Export Citation:
Assignee:
KOHJIN FILM & CHEMICALS CO LTD (JP)
International Classes:
B32B27/32; B32B27/00; B32B27/18; B65D65/40
Domestic Patent References:
| WO2021025039A1 | 2021-02-11 |
Foreign References:
| JP2021020421A | 2021-02-18 | |||
| JP2018039134A | 2018-03-15 | |||
| JP2017105947A | 2017-06-15 | |||
| JP2009101682A | 2009-05-14 | |||
| JP2003112395A | 2003-04-15 |
Attorney, Agent or Firm:
HANABUSA PATENT & TRADEMARK OFFICE (JP)
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