GEOMEMBRANE, LANDFILL SHEET USING SAME, AND RADON BARRIER FILM

    公开(公告)号:EP3778230A1

    公开(公告)日:2021-02-17

    申请号:EP19780656.5

    申请日:2019-04-05

    申请人: Kuraray Co., Ltd.

    IPC分类号: B32B27/28

    摘要: There is provided a geomembrane consisting of a multilayer structure comprising a barrier layer (A), an adhesive layer (B) made of an acid-modified thermoplastic resin and a thermoplastic resin layer (C), wherein the thermoplastic resin layer (C) is laminated on at least one side of the barrier layer (A) via the adhesive layer (B), and the barrier layer (A) has an ethylene unit content of 18 mol% or more and 55 mol% or less and comprises a modified ethylene-vinyl alcohol copolymer comprising a modifying group having a primary hydroxyl group. The geomembrane exhibits excellent peer strength between the barrier layer and the adhesive layer, exhibits further improved peel strength after prolonged exposure to high temperature and high humidity conditions.

    RESIN COMPOSITION, EXTRUSION-MOLDED ARTICLE, INJECTION-MOLDED ARTICLE, AND BLOW-MOLDED ARTICLE

    公开(公告)号:EP3480251A1

    公开(公告)日:2019-05-08

    申请号:EP17820238.8

    申请日:2017-06-28

    申请人: Kuraray Co., Ltd.

    IPC分类号: C08L29/04 C08K5/20

    摘要: A resin composition superior in stability and external appearance characteristics during/following melt molding; and an extrusion-molded article, an injection-molded article and a blow-molded article that are formed from the resin composition are provided. The resin composition contains an ethylene-vinyl alcohol copolymer as a principle component, and has a heterogeneous nucleation index (f) of less than 0.6 as determined by formula (1) based on a differential scanning calorimetry (DSC) curve obtained by DSC in which the resin composition is cooled at a rate of 150 °C/sec from a molten state at 210 °C. In the formula (1), Q total represents an area of a total region surrounded by the DSC curve and a base line, and Q hetero represents an area of a heterogeneous region that is a part of the total region, falling within a range from the temperature lower than the melting point by 38 °C to a temperature lower than the melting point by 75 °C. f = Q hetero / Q total