Title:
LAMINATE
Document Type and Number:
Japanese Patent JP2021070250
Kind Code:
A
Abstract:
SOLUTION: A laminate is provided, comprising a sealant film satisfying the following requirements (1) to (3) and a substrate film satisfying requirement (4), and containing a propylene (co)polymer and/or 1-butene (co)polymer by 70 mass% or more when the total mass of the sealant film and the substrate film is set to 100 mass%. The requirements are: (1) the sealant film has at least a hot-melt layer comprising an olefin-based (co)polymer (a-2) having a melting point of 30°C or higher and lower than 120°C; (2) when the hot-melt layers are adhered to each other, the heat seal strength is 10 N/15 mm or more at 110°C; (3) the sealant film is a nonoriented film; and (4) the substrate film is at least one type selected from a nonoriented polypropylene film and a biaxially oriented polypropylene film.EFFECT: The laminate of the present invention has a high content percentage of a propylene copolymer and excellent low-temperature heat sealing property, and can achieve both of physical properties such as low-temperature heat sealing property and anti-blocking property and reduction in the production cost.SELECTED DRAWING: None
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Inventors:
OKU TATSUYA
EGAWA MAKOTO
KAI YUKI
EGAWA MAKOTO
KAI YUKI
Application Number:
JP2019198624A
Publication Date:
May 06, 2021
Filing Date:
October 31, 2019
Export Citation:
Assignee:
MITSUI CHEMICALS INC
International Classes:
B32B27/00; B32B27/32; B65D65/40
Domestic Patent References:
| JPH11192680A | 1999-07-21 | |||
| JP2005097558A | 2005-04-14 | |||
| JP2003170554A | 2003-06-17 | |||
| JPH11100659A | 1999-04-13 |
Foreign References:
| WO2014042249A1 | 2014-03-20 | |||
| WO2007046307A1 | 2007-04-26 |
Attorney, Agent or Firm:
Patent corporation ssinpat