POLYLACTIC ACID-BASED FILM OR SHEET
    3.
    发明申请
    POLYLACTIC ACID-BASED FILM OR SHEET 审中-公开
    基于聚氨酯的薄膜或薄片

    公开(公告)号:US20130236723A1

    公开(公告)日:2013-09-12

    申请号:US13885407

    申请日:2011-11-21

    IPC分类号: C08L67/04 C08L27/18 C08G63/06

    摘要: Disclosed is a polylactic acid-based film or sheet as a resin film or sheet including a polylactic acid (A). The film or sheet has a melt endotherm ΔHc′ of 10 J/g or more, where ΔHc′ is of a region crystallized upon film formation and specified by following Expression (1): ΔHc′=ΔHm−ΔHc  (1) wherein ΔHc represents an exotherm (J/g) associated with crystallization of the film or sheet in a temperature rise process after film formation; and ΔHm represents an endotherm (J/g) associated with subsequent melting of the film or sheet, each determined by DSC. The film or sheet has a tear strength of 2.5 N/mm or more both in a machine direction (MD) and a transverse direction (TD). The polylactic acid-based resin film or sheet is resistant to melting and deformation even at an elevated temperature higher than 100° C. and is resistant to breaking and tearing during winding into a roll.

    摘要翻译: 公开了作为包含聚乳酸(A)的树脂膜或片材的聚乳酸类膜或片。 该薄膜或片材具有10J / g以上的熔融吸热DeltaHc',其中DeltaHc'是成膜后结晶的区域,并通过以下表达式(1)指定:DeltaHc'= DeltaHm-ΔHc(1)其中DeltaHc表示 在成膜后的升温过程中与膜或片的结晶相关的放热(J / g) 并且DeltaHm表示与随后熔融的膜或片相关联的吸热(J / g),各自由DSC确定。 膜或片在纵向(MD)和横向(TD)上都具有2.5N / mm以上的撕裂强度。 聚乳酸类树脂膜或片材即使在高于100℃的高温下也耐熔融变形,并且在卷成卷期间耐断裂和撕裂。

    POLYLACTIC ACID-BASED FILM OR SHEET
    8.
    发明申请
    POLYLACTIC ACID-BASED FILM OR SHEET 审中-公开
    基于聚氨酯的薄膜或薄片

    公开(公告)号:US20110201746A1

    公开(公告)日:2011-08-18

    申请号:US13122076

    申请日:2009-10-01

    摘要: A method of producing a polylactic acid based film or sheet with improved heat resistance and comprised of a resin composition containing a polylactic acid according to a melt film forming method, wherein the resin composition comprises polylactic acid (A), an acidic functional group-denatured olefin based polymer (B) containing an acidic functional group, and having an acid number of 10-70 mg KOH/g and a weight average molecular weight of 10,000-80,000, and a tetrafluoroethylene based polymer (C), which method comprises performing melt film formation at a temperature of the resin composition between the crystallization temperature (Tc) in a decreasing temperature process of the resin composition +15° C. and the melting temperature (Tm) in a raising temperature process −5° C., or solidifying the resin composition melt-formed in a film state by cooling after a temperature controllable step at crystallization temperature (Tc) in the decreasing temperature process ±10° C.

    摘要翻译: 一种制备具有改善的耐热性的聚乳酸类膜或片材的方法,其包含根据熔融成膜法的含有聚乳酸的树脂组合物,其中所述树脂组合物包含聚乳酸(A),酸性官能团变性 含有酸性官能团的烯烃系聚合物(B),酸值为10-70mg KOH / g,重均分子量为10,000〜80,000的四氟乙烯系聚合物(C),该方法包括进行熔融 树脂组合物的温度在树脂组合物的降温过程中的结晶温度(Tc)+ 15℃与升温过程中的熔融温度(Tm)-5℃之间的膜形成,或固化 树脂组合物在降温过程±10℃的结晶温度(Tc)下经过温度可控制的步骤之后通过冷却而在薄膜状态下熔融成型。