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    • 7. 发明申请
    • Foamed Film for Shrink Labels
    • 泡沫膜收缩标签
    • US20090294458A1
    • 2009-12-03
    • US11992438
    • 2006-09-21
    • Ryouji TanakaToshio Taka
    • Ryouji TanakaToshio Taka
    • B65D90/00B32B27/00B32B3/26B29C55/00B29C47/04
    • B65D23/0878B29C55/06B29C55/28B29C61/0633B29C63/423B29K2105/04B32B5/18B32B27/32Y10T428/249953
    • The present invention provides a foamed film for shrink labels which is capable of being accommodated by the new continuous attachment system for shrink labels, and in which a long foamed film for shrink labels is wound around the body of a container, and is cut at the inner-position where the film overlaps, after which the two ends of the resulting film unit are joined together to form a cylindrical shape, and this is subsequently heated to cause heat shrinkage of the film and to produce the label. The foamed film for shrink labels of the present invention is a film which stretches a blown film with an expansion ratio of 1.3 to 5 in the longitudinal direction (vertical direction or extrusion direction) so that the draw ratio is 1.5 to 4.0, which has properties such as a thickness of 120 to 300 μm, a tensile elastic modulus of 80 to 500 MPa, a static friction coefficient of 0.3 to 0.8, a coefficient of shrinkage of 15% or more at 90° C. and 30% or more at 120° C., and which is foamed and has shrinkability.
    • 本发明提供一种用于收缩标签的发泡膜,其能够通过用于收缩标签的新的连续附接系统来容纳,并且其中用于收缩标签的长的发泡膜缠绕在容器的主体上,并且在 胶片重叠的内部位置,然后将所得胶片单元的两端接合在一起形成圆柱形,随后加热,引起胶片的热收缩并产生标签。 本发明的收缩标签用发泡膜是将长度方向(垂直方向或挤压方向)的发泡倍率为1.3〜5的吹塑薄膜拉伸至1.5〜4.0的膜, 如120〜300μm的厚度,80〜500MPa的拉伸弹性模量,0.3〜0.8的静摩擦系数,90℃下的收缩率为15%以上,120℃时为30%以上 ℃,发泡并具有收缩性。