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    Process for producing ultrasonic seal, and film structures and flexible containers with same
    5.
    发明授权
    Process for producing ultrasonic seal, and film structures and flexible containers with same 有权

    公开(公告)号：US10293575B2

    公开(公告)日：2019-05-21

    申请号：US14776862

    申请日：2014-04-09

    申请人： Dow Global Technologies LLC

    发明人： Selim Bensason ,  Jozef J. Van Dun ,  Gagan Saini

    IPC分类号： B32B7/12 ,  B32B27/32 ,  B32B15/08 ,  B32B27/08 ,  B32B27/34 ,  B32B37/06 ,  B32B27/36 ,  B29C65/08 ,  B29C65/82 ,  B29C65/00

    摘要： The present disclosure is directed to processes for producing ultrasonic sealable film structures and flexible containers with ultrasonic seals. The film structure includes a first multilayer film and a second multilayer film. Each multilayer film includes a backing layer and a seal layer. Each seal layer includes an ultrasonic sealable olefin-based polymer (USOP) having the following properties: (a) a heat of melting, ΔHm, less than 130 J/g, (b) a peak melting temperature, Tm, less than 125° C., (c) a storage modulus in shear (G′) from 50 MPa to 500 MPa, and (d) a loss modulus in shear (G″) greater than 10 MPa. The multilayer films are arranged such that the seal layer of the first multilayer film is in contact with the seal layer of the second multilayer film. The seal layers form an ultrasonic seal having a seal strength from 30 N/15 mm to 80 N/15 mm when ultrasonically sealed at 4 N/mm seal force.

    Layered structures and articles prepared therefrom
    7.
    发明授权
    Layered structures and articles prepared therefrom 有权
    由其制备的分层结构和制品

    公开(公告)号：US09487337B2

    公开(公告)日：2016-11-08

    申请号：US14344815

    申请日：2012-09-19

    申请人： DOW GLOBAL TECHNOLOGIES LLC ,  ROHM AND HAAS COMPANY

    发明人： Sekhar Sundaram ,  Debkumar Bhattacharjee ,  Jozef J. Van Dun ,  Bradley A. Jacobs ,  Rajen M. Patel ,  Alexander Williamson

    IPC分类号： B65D65/40 ,  C09J7/02 ,  B32B27/40 ,  B32B27/08 ,  B32B27/32 ,  B32B7/12 ,  C09J175/04

    CPC分类号： B65D65/40 ,  B32B7/12 ,  B32B27/08 ,  B32B27/32 ,  B32B27/40 ,  B32B2439/70 ,  B32B2439/80 ,  C09J7/243 ,  C09J175/04 ,  C09J2423/006 ,  C09J2475/00 ,  Y10T428/2848 ,  Y10T428/2896

    摘要： The invention provides a layered structure comprising at least two layers: A) a first layer A, formed from a composition A, comprising a polyurethane; and B) a second layer B, formed from a composition B, comprising at least one functionalized polymer B comprising the following: i) at least one polymerized monomeric unit comprising a functional group selected from the group consisting of the following: a) an acid group, b) an anhydride group, c) a primary or secondary amine group, and d) combinations thereof; or ii) at least one reacted functionalization agent comprising a functional group selected from the group consisting of the following: e) an acid group, f) an anhydride group, g) a primary or secondary amine group, and h) combinations thereof; or iii) combinations thereof; and wherein the functionalized polymer B has a number-average molecular weight greater than 1,000 g/mole, and/or a melt index (I2) less than, or equal to, 2500 g/10 min.

    摘要翻译： 本发明提供了包括至少两层的层状结构：A）由组合物A形成的包含聚氨酯的第一层A; 和B）由组合物B形成的第二层B，其包含至少一种官能化聚合物B，其包含以下物质：i）至少一种包含选自以下的官能团的聚合单体单元：a）酸 基团，b）酸酐基团，c）伯或仲胺基团，和d）其组合; 或ii）至少一种反应官能化剂，其包含选自以下的官能团：e）酸基，f）酸酐基，g）伯或仲胺基，和h）其组合; 或iii）其组合; 并且其中所述官能化聚合物B的数均分子量大于1,000g / mol，和/或小于或等于2500g / 10min的熔体指数（I 2）。