High free shrink, high modulus, low shrink tension film with elastic recovery
    5.
    发明授权
    High free shrink, high modulus, low shrink tension film with elastic recovery 有权
    高自由收缩,高模量,低收缩张力膜具有弹性回复

    公开(公告)号:US06872462B2

    公开(公告)日:2005-03-29

    申请号:US10634294

    申请日:2003-08-05

    摘要: A film includes a core layer including a homogeneous random alpha-olefin/cyclic olefin copolymer; and first and second outer layers including an olefinic polymer; the film having Young's modulus between about 50,000 and about 200,000 psi, free shrink between about 10% and about 80% at 240° F., and shrink tension of less than about 400 psi, or a shrink force of between about 20 and about 180 grams, at 240° F. First and second intermediate layers including an ethylene copolymer having a melt index less than about 2 g/10 minutes can be optionally included. Alternatively, a film includes a core layer including an ethylene copolymer having melt index less than about 2 g/10 minutes; first and second intermediate layers including a homogeneous random alpha-olefin/cyclic olefin copolymer; and first and second outer layers including an olefinic polymer; the film having properties as disclosed above.

    摘要翻译: 膜包括包含均相无规α-烯烃/环烯烃共聚物的芯层; 第一和第二外层包括烯属聚合物; 该膜的杨氏模量在约50,000至约200,000psi之间,240°F时自由收缩约10%至约80%,收缩张力小于约400psi,收缩力在约20至约180之间 可以任选地包括包含熔体指数小于约2g / 10分钟的乙烯共聚物的第一和第二中间层。 或者,膜包括芯层,其包含熔体指数小于约2g / 10分钟的乙烯共聚物; 包括均相无规α-烯烃/环烯烃共聚物的第一和第二中间层; 第一和第二外层包括烯属聚合物; 该膜具有如上所述的性质。

    Systems and methods for forming a composite part based on volume

    公开(公告)号:US10562244B2

    公开(公告)日:2020-02-18

    申请号:US15412674

    申请日:2017-01-23

    摘要: In an example, a method for forming a composite part includes, based on a part specification, cutting layers of material in a sequence and positioning the layers to form a stack. For each layer, after positioning the layer and before cutting a next layer in the sequence, the method includes (i) scanning along a length of the layer to determine an image, (ii) determining, based on the image, at least two edges of the layer, (iii) determining, based on the edges, a measured width at locations along the length of the layer, (iv) comparing the measured width at each location to a target width at the location, (v) deciding, based on the comparison, whether to adjust the production process, and (vi) if the decision is to adjust the production process, then adjusting the production process based on the comparison. The part specification specifies the target width at each location.