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    LAMINATE
    1.
    发明申请
    LAMINATE 有权

    公开(公告)号：US20220314589A1

    公开(公告)日：2022-10-06

    申请号：US17841027

    申请日：2022-06-15

    Applicant: TOPPAN INC.

    Inventor： Shigeki KUDO ,  Haruna KADOYA

    IPC: B32B27/08 ,  B32B7/12 ,  B32B37/06

    Abstract: A laminate for forming a packaging bag, in sequence: a substrate layer; an adhesive layer; and a sealant layer, wherein the sealant layer includes a first polyester film having a crystallinity of 20 to 50% based on a first absorbance at a first wavenumber of 1409 cm−1, a second absorbance at a second wavenumber of 1370 cm−1, a third absorbance at a third wavenumber of 1340 cm−1, a first constant, and a second constant, the first to third absorbances and the first and second constants being determined based on FT-IR analysis, which uses a reflection method, on at least the first polyester film, the crystallinity of the first polyester film being expressed in accordance with the following formulas (1) and (2): I1409=p1×I1340+p2×I1370 . . . (Formula 1) and C=p1×(I1340/I1409)×100 . . . (Formula 2).

    LAMINATE
    2.
    发明申请
    LAMINATE 有权

    公开(公告)号：US20220410547A1

    公开(公告)日：2022-12-29

    申请号：US17895327

    申请日：2022-08-25

    Applicant: TOPPAN INC.

    Inventor： Haruna KADOYA ,  Shigeki KUDO

    IPC: B32B27/08 ,  B32B27/36 ,  B32B7/12 ,  B32B7/022

    Abstract: A laminate for forming a packaging bag including a substrate layer containing a crystalline polyester film, an adhesive layer, and a sealant layer containing the polyester film arranged in this order. The sealant layer has a ratio of a fracture elongation thereof to a thickness thereof which is 13%/um or less. The fracture elongation is a fracture elongation of the sealant layer as measured in a unit of 15mm width thereof in an MD direction.

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