Transparent polypropylene film for candy twist wrapping
    37.
    发明授权
    Transparent polypropylene film for candy twist wrapping 失效
    透明聚丙烯薄膜用于糖果扭曲包装

    公开(公告)号:US4786533A

    公开(公告)日:1988-11-22

    申请号:US915083

    申请日:1986-10-03

    Abstract: A transparent propylene polymer film, produced by coextrusion and coated on one or both sides, for candy twist wrapping, wherein the propylene polymer base layer additionally contains a low molecular hydrocarbon resin in an amount of 10 to 40% by weight, based on the total weight of propylene polymer and resin, the base layer has a modulus of elasticity of not less than 3,000 N/mm.sup.2, measured in both directions of molecular orientation, and each top layer contains a polydialkylsiloxane in an amount of 0.3 to 1.5% by weight, based on the weight of the top layer.

    Abstract translation: 一种透明丙烯聚合物膜,通过共挤出制成并涂覆在一面或两面上,用于糖果扭曲缠绕,其中丙烯聚合物基层另外含有10至40重量%的低分子量烃树脂,基于总计 丙烯聚合物和树脂的重量,基层在分子取向的两个方向上测量的弹性模量不小于3,000N / mm 2,并且每个顶层含有0.3至1.5重量%的聚二烷基硅氧烷, 基于顶层的重量。

    Process for the preparation of a biaxially oriented polypropylene film
    38.
    发明授权
    Process for the preparation of a biaxially oriented polypropylene film 失效
    制备双轴取向聚丙烯薄膜的方法

    公开(公告)号:US4758396A

    公开(公告)日:1988-07-19

    申请号:US905190

    申请日:1986-09-09

    Abstract: A process for the preparation of a biaxially stretch-oriented film having at least one opaque layer is described. The opaque layer is composed essentially of propylene polymer and fillers in a quantity of about 10 to 40% by weight, relative to the total weight of propylene polymer and fillers. In production, the granules are melted in a screw extruder, are forced through a die and are formed by cooling to give a preformed film. The preformed film is then stretch-oriented both along the machine direction and transversely perpendicular to the machine direction and is then heat-set. The fillers are added in the form of a masterbatch to the granules of unfilled polymers. The masterbatch should have a filler content of more than about 30% by weight.

    Abstract translation: 描述了制备具有至少一个不透明层的双轴拉伸取向膜的方法。 相对于丙烯聚合物和填料的总重量,不透明层基本上由丙烯聚合物和填料组成,其量为约10至40重量%。 在生产中,颗粒在螺杆挤出机中熔化,被迫通过模具,并通过冷却形成以得到预成型膜。 然后将预成型薄膜沿机器方向和横向垂直于机器方向拉伸取向,然后热定形。 将填料以母料的形式加入未填充聚合物的颗粒中。 母料应具有大于约30重量%的填料含量。

    Non-sealable, biaxially oriented multi-layer polypropylene film
    39.
    发明授权
    Non-sealable, biaxially oriented multi-layer polypropylene film 失效
    不可密封的双轴取向多层聚丙烯薄膜

    公开(公告)号:US4725466A

    公开(公告)日:1988-02-16

    申请号:US863447

    申请日:1986-05-15

    Abstract: A non-sealable polypropylene multi-layer film comprises a base layer and at least one covering layer, the base layer as wella as the covering layer or layers being formed of propylene homopolymers. The covering layers contain a combination of additives composed of (a) from 0.2 to 1.0% by weight of a long-chain aliphatic amine, (b) from 0.2 to 1.0% by weight of a polydialkylsiloxane, and (c) from 0.1 to 1.0% by weight of a platelet-shaped inorganic pigment, the platelets of the pigments being disposed substantially parallel to the surface of the covering layer. The film is preferably produced by a coextrusion process. It is preferably used as a laminating film, an interleaving film or a metallizable film. The novel non-sealable polypropylene multi-layer film has, in particular, good anti-blocking and slip properties, good optical properties, good antistatic properties, and a high scratch resistance. The film can be subjected to a corona treatment without thereby adversely influencing its properties.

    Abstract translation: 不可密封的聚丙烯多层膜包括基底层和至少一个覆盖层,基底层以及由丙烯均聚物形成的覆盖层。 覆盖层包含由(a)0.2-1.0重量%的长链脂族胺组成的添加剂组合,(b)0.2-1.0重量%的聚二烷基硅氧烷,和(c)0.1至1.0重量% 重量%的片状无机颜料,所述颜料的小片基本上平行于覆盖层的表面设置。 膜优选通过共挤出方法制备。 优选用作层压膜,交织膜或金属化膜。 该新颖的不可密封聚丙烯多层膜特别具有良好的防粘连和滑动性能,良好的光学性能,良好的抗静电性能和高耐擦伤性。 该膜可以进行电晕处理,而不会不利地影响其性能。

    Polyolefin molding composition
    40.
    发明授权
    Polyolefin molding composition 失效
    聚烯烃成型组合物

    公开(公告)号:US4670499A

    公开(公告)日:1987-06-02

    申请号:US897392

    申请日:1986-08-15

    CPC classification number: C08K3/26

    Abstract: A polyolefin molding composition which contains a very small amount of a specific calcium carbonate causes only very little corrosion on machines during processing.

    Abstract translation: 含有非常少量的特定碳酸钙的聚烯烃模塑组合物在加工过程中对机器只产生非常小的腐蚀。

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