Polyolefin oil resistant film using high isotactic content polypropylene
    35.
    发明授权
    Polyolefin oil resistant film using high isotactic content polypropylene 有权
    聚烯烃耐油薄膜采用高均匀含量的聚丙烯

    公开(公告)号:US06844078B2

    公开(公告)日:2005-01-18

    申请号:US10357395

    申请日:2003-02-04

    摘要: A coextruded multilayer film, having of at least a high crystalline propylene homopolymer resin layer of isotactic content greater than about 95%; a discharge-treated surface on one side of said polyolefin resin layer; an amount of hydrocarbon resin up to 10% by weight of the high crystalline propylene homopolymer of greater than about 95% isotactic content; and on the high crystalline propylene homopolymer resin layer side opposite said discharge-treated surface, a heat sealable layer or winding layer having an antiblock is disclosed.

    摘要翻译: 一种共挤出多层膜,具有至少一种全同​​立构含量高于约95%的高结晶丙烯均聚物树脂层; 在所述聚烯烃树脂层的一侧上的放电处理表面; 高达结晶丙烯均聚物的10重量%的烃树脂的量大于约95%的全同立构含量; 并且在与所述放电处理表面相对的高结晶丙烯均聚物树脂层侧上,公开了具有防粘连的热封层或卷绕层。

    Release film with reduced transferable silicone material
    37.
    发明授权
    Release film with reduced transferable silicone material 失效
    释放膜与减少可转移的硅胶材料

    公开(公告)号:US5232756A

    公开(公告)日:1993-08-03

    申请号:US812496

    申请日:1991-12-23

    摘要: A release film for label stock and the like having:(a) a cavitated layer of a thermoplastic polymer matrix material within which is located a strata of voids, positioned at least substantially within at least a substantial number of each of the voids is at least one spherical void-initiating solid particle which is phase-distinct and incompatible with the matrix material, the void space occupied by the particle being substantially less than the volume of the void, with one generally cross-sectional dimension of the particle at least approximating a corresponding cross-sectional dimension of the void; the population of the voids being such as to cause a degree of opacity of less than 70% light transmission;at least one surface of the layer free of any coating tending to mask the surface affects of cavitation; and(b) opposite to this surface, a coating of a release material of a type having a tendency to partially transfer to any contacting surface.

    摘要翻译: 用于标签原料等的剥离膜具有:(a)热塑性聚合物基质材料的空化层,其中位于至少基本上至少基本上至少相当数量的每个空隙中的空隙层位于至少 一个球形的起始起始的固体颗粒是与基质材料相异且不相容的,颗粒占据的空隙空间基本上小于空隙的体积,颗粒的一个大致横截面的尺寸至少近似于 空隙的相应横截面尺寸; 空隙的群体会导致光透射率低于70%的不透明度; 层的至少一个表面没有任何涂层倾向于掩盖表面空化的影响; 和(b)与该表面相对的是具有部分转移到任何接触表面的倾向的剥离材料的涂层。