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    • 6. 发明授权
    • Polypropylene based compositions and films and labels formed therefrom
    • 聚丙烯基组合物和由其形成的膜和标记
    • US06376058B1
    • 2002-04-23
    • US09470194
    • 1999-12-21
    • Johannes SchutCoen van TolMitchell J. RackovanPaul C. McCaslinEng-Pi Chang
    • Johannes SchutCoen van TolMitchell J. RackovanPaul C. McCaslinEng-Pi Chang
    • C08L2312
    • C08L23/08C08L23/0869C08L23/12Y10S428/91Y10T428/1452C08L2666/04
    • A polypropylene based composition is described which comprises a mixture of (A) a propylene polymer or copolymer and (B) an alkylene-alkyl acrylate copolymer. These polypropylene based compositions are useful in the preparation of continuous films such as by extrusion, and the films can be oriented by stretching in the machine direction. The films prepared from the polypropylene compositions of this invention exhibit a variety of useful properties including the desired printability, stiffness, and die-cuttability to be useful as a facestock in preparing labels. Films prepared from the polypropylene based compositions of the invention also can be used as a base film, and the films can be overlaminated with a functional film. Machine-direction oriented monolayer and multilayer film facestocks for labels, and adhesive containing film labelstock for use in adhesive labels also are described. The present invention, in one embodiment, relates to the discovery that the films of the polypropylene compositions are useful as the facestocks in label applications. The clear films prepared from the polypropylene compositions of the invention also are useful for laminating over other polymer films and film facestocks to provide improved printability, die-cuttability and/or scuff resistance characteristics to the polymer films and facestocks.
    • 描述了包含(A)丙烯聚合物或共聚物和(B)丙烯酸烷基酯共聚物的混合物的聚丙烯基组合物。 这些基于聚丙烯的组合物可用于连续膜的制备,例如通过挤出,并且膜可以通过沿机器方向拉伸取向。 由本发明的聚丙烯组合物制备的膜显示出各种有用的性质,包括所需的可印刷性,刚度和可切割性,可用作制备标签中的面材。 由本发明的聚丙烯基组合物制备的膜也可以用作基膜,并且膜可以用功能膜叠层。 还描述了用于标签的机器方向取向的单层和多层膜面料,以及用于粘合剂标签的含有粘合剂的膜标签。 在一个实施方案中,本发明涉及聚丙烯组合物的膜可用作标签应用中的面料的发现。 由本发明的聚丙烯组合物制备的透明膜也可用于层压在其它聚合物膜和膜面材上,以提供对聚合物膜和面料的改进的可印刷性,可切割性和/或耐刮擦性。
    • 7. 发明授权
    • Method for selecting a substrate intended for use in a cutting operation
    • 选择用于切割操作的基板的方法
    • US5961766A
    • 1999-10-05
    • US62206
    • 1998-04-17
    • Eng-Pi ChangYao-Feng Wang
    • Eng-Pi ChangYao-Feng Wang
    • G01N3/24G01N19/04B32B31/14B32B31/18G01N3/00G01N3/08
    • G01N3/24G01N19/04Y10T156/1052Y10T156/1082
    • This invention relates to a method for selecting a substrate intended for use in a cutting operation. The method is particularly suitable for selecting facestock materials intended for use in making pressure-sensitive adhesive (PSA) constructions such as PSA labels. The method includes the following steps (A)-(D). Step (A) involves cutting the substrate during a first cutting step to form at least two shapes in the substrate. The shapes are positioned in spaced relationship to each other. A matrix is formed during this cutting step. The matrix is the waste substrate material around the shapes. Step (B) involves cutting the substrate with a second cutting step to form a test sample. The test sample is comprised of part of one shape, part of the next adjacent shape, and the matrix around the shape parts. Step (C) involves separating the matrix from the shape parts while measuring the force required to separate the matrix from the shape parts and measuring the displacement of the separating force. Step (D) involves determining the friction energy required to separate the matrix from the shape parts. The selection of the substrate is dependent on the friction energy.
    • 本发明涉及一种选择用于切割操作的基板的方法。 该方法特别适用于选择用于制造PSA标签等压敏粘合剂(PSA)结构的面材。 该方法包括以下步骤(A) - (D)。 步骤(A)涉及在第一切割步骤期间切割基底以在基底中形成至少两种形状。 形状彼此间隔开。 在该切割步骤期间形成矩阵。 矩阵是形状周围的废弃基材。 步骤(B)涉及用第二切割步骤切割基底以形成测试样品。 测试样品由一部分形状,下一个相邻形状的一部分和围绕形状部分的基体组成。 步骤(C)涉及将基体与形状部分分开,同时测量将基体与形状部分离开并测量分离力的位移所需的力。 步骤(D)涉及确定将矩阵与形状部分分离所需的摩擦能。 衬底的选择取决于摩擦能。