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    • 9. 发明公开
    • USE OF PLASTIC FILMS FOR LABELS
    • VERWENDUNG VON KUNSTSTOFFFOLIENFÜRETIKETTEN
    • EP2949468A1
    • 2015-12-02
    • EP15167812.5
    • 2015-05-15
    • Irplast S.p.A.
    • Di Costanzo, CarmeloPasquini, GinoMontagano, AngeloSoluri, GiascomoDe Bartolo, LucaCosi, Fausto
    • B32B27/32G09F3/10C09J7/02
    • B32B27/32B32B7/12B32B27/08B32B2307/4026B32B2307/51B32B2307/516B32B2307/54B32B2307/702B32B2307/704B32B2307/736B32B2519/00C09J7/29C09J2201/162C09J2203/334C09J2423/106C09J2423/166
    • Use for preparing labels for "roll-fed" applications of a heat shrinkable uniaxial multilayer film, formed of at least three layers, wherein the core comprises a component a) selected from a1) isotactic crystalline polypropylene and/or a2) a crystalline copolymer of propylene with ethylene, and component b) selected from b1) amorphous atactic polypropylene and/or b2) an amorphous propylene-ethylene copolymer with at least one alpha-olefin having from 4 to 12 carbon atoms wherein, as % by weight with respect to the total amount of monomers, 1a; the total amount of additive component b), in parts by weight per 100 parts by weight of component a) being comprised be-tween 3 and 12, the external skin layers comprise a copolymer of propylene with ethylene and at least one C 4 -C 12 alpha-olefin, the film being obtained by simultaneous biaxial stretching by means of linear synchronous motors, the heat shrinking in MD being comprised between 8 and 17% and in TD ≤2, the thickness of the multilayer film being comprised between 25 and 35 µm; the film filming yield being ≥ 95%;
      the scraps on the label application line ≤0.5%; the label application process on the containers comprises the application of adhesivized labels with hot-melt adhesive to containers having a convex lateral surface of the container having a curvature radius of the surface greater than 74 mm wherein the upper edge of the label is applied and greater than 72 mm wherein the lower edge of the label is applied, the label height, measured along the vertical axis of the container, being about 60 mm.
    • 用于制备由至少三层形成的热收缩单轴多层膜的“辊式”应用的标签,其中芯包含选自a1)全同立构结晶聚丙烯的组分a)和/或a2)结晶共聚物 丙烯与乙烯,和组分b)选自b1)无定形无规聚丙烯和/或b2)无定形丙烯 - 乙烯共聚物与至少一种具有4至12个碳原子的α-烯烃,其中以相对于 单体总量,1a; 添加剂组分b)的总量,以每100重量份组分a)的重量份计,包含在3和12之间,外表皮层包含丙烯与乙烯和至少一种C 4 -C 12个α-烯烃,该膜通过线性同步电动机的同时双轴拉伸获得,MD的热收缩率在8-17%之间,TD‰¤2,多层膜的厚度在25和 35微米; 电影拍摄收益率为¥95%; 标签应用线上的废料‰¤0.5%; 容器上的标签施加过程包括将具有热熔粘合剂的粘合标签施加到具有表面大于74mm的曲率半径的容器的凸形侧表面的容器,其中标签的上边缘被施加并且更大 超过72mm的标签的下边缘被施加,沿容器的垂直轴测量的标签高度约为60mm。