Title:
POLYPROPYLENE MULTI-LAYER SHEET
Document Type and Number:
WIPO Patent Application WO/2023/127972
Kind Code:
A1
Abstract:
A polypropylene (PP) multi-layer sheet having a thickness of 0.1-5 mm and comprising an alternate layer in which biaxially-orientated PP layers F (melting point TmF) and biaxially-orientated PP layers N (melting point TmN) are alternately layered, wherein TmF≥TmN is satisfied, the layers F are formed from a resin composition containing a PP-based resin (A) and an inorganic filler (B), the weight ratio of (B)/[(A)+(B)] is 0-60 wt%, the layers N are formed from a resin composition containing a PP-based resin (a) and optionally containing said (B), the weight ratio of (B)/[(a)+(B)] is 0-2 wt%, and the polypropylene multi-layer sheet satisfies one or both of the following requirements: (I) at least one layer of the layers F is a layer FE in which the weight ratio of (B)/[(A)+(B)] is 3-60 wt%; and (II) a layer E containing an olefin-based resin other than a PP-based resin is included.
Inventors:
NAKAJIMA TAKESHI (JP)
AKINAGA SHUJI (JP)
AOYAMA RYUJI (JP)
AKINAGA SHUJI (JP)
AOYAMA RYUJI (JP)
Application Number:
PCT/JP2022/048687
Publication Date:
July 06, 2023
Filing Date:
December 28, 2022
Export Citation:
Assignee:
SUNALLOMER LTD (JP)
International Classes:
B32B27/32; B32B7/06; B32B27/00; B65D65/40
Foreign References:
| JP2021091116A | 2021-06-17 | |||
| JP2017066305A | 2017-04-06 | |||
| JP2017186561A | 2017-10-12 | |||
| JP2016087892A | 2016-05-23 |
Attorney, Agent or Firm:
YAMAMOTO, Osamu et al. (JP)
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