Title:
LAMINATE
Document Type and Number:
Japanese Patent JP2020192695
Kind Code:
A
Abstract:
To provide a material excellent in low-temperature heat sealability, which comprises mainly a propylene-based copolymer.SOLUTION: There is provided a laminate which comprises a sealant film satisfying the following (1) to (3) and a base material film satisfying (4) and 70 mass% or more of a propylene (co)polymer and/or a 1-butene (co)polymer when the total of the mass of the sealant film and the base material film is defined as 100 mass%. (1) The sealant film contains at least a heat fusion layer containing an olefin-based (co)polymer(a-2) having a melting point of 30°C or more and less than 120°C. (2) The heat seal strength at 100°C when the heat fusion layers are adhered to each other is 10 N/15 mm or more. (3) The sealant film is a non-stretched film. (4) The base material film is at least one selected from a non-stretched polypropylene film and a biaxially stretched polypropylene film.SELECTED DRAWING: None
Inventors:
OKU TATSUYA
EGAWA MAKOTO
EGAWA MAKOTO
Application Number:
JP2019098332A
Publication Date:
December 03, 2020
Filing Date:
May 27, 2019
Export Citation:
Assignee:
MITSUI CHEMICALS INC
International Classes:
B32B27/32; B65D65/40
Domestic Patent References:
| JP2005194438A | 2005-07-21 | |||
| JPH11221884A | 1999-08-17 | |||
| JP2002234123A | 2002-08-20 | |||
| JP2004107544A | 2004-04-08 |
Foreign References:
| WO2014042249A1 | 2014-03-20 |
Attorney, Agent or Firm:
Patent corporation ssinpat