发明名称 |
HEAT-SHRINKABLE FILM FOR LABEL WITH LOW SPECIFIC GRAVITY AND METHOD FOR PREPARING THE SAME |
摘要 |
A heat-shrinkable label film includes a foamed layer having polystyrene as a principal component, and a pair of non-foamed layers adhesively melted to either side of the foamed layer, wherein the foamed layer and the pair of the non-foamed layers are coextruded to provide a low specific gravity less than 1.0. The film is prepared by coextruding to form the several layers completing a non-drawn film; and drawing the non-drawn film in a transverse direction (TD) at a drawing ratio of 3.5 to 5.5. The foamed ratio of the foamed layer is in the range of 5 to 20%. The thickness of the foamed layer is 60 to 90% of the total thickness of the film; and the thickness of each non-foamed layer is 5 to 20% of the total thickness of the film. The heat-shrinkable label film has a thickness of 30 to 60 μm. |
申请公布号 |
US2016082708(A1) |
申请公布日期 |
2016.03.24 |
申请号 |
US201314785467 |
申请日期 |
2013.11.28 |
申请人 |
DONG IL CHEMICAL INC., LTD. |
发明人 |
Oh Won Seok;Oh Yeong Taek |
分类号 |
B32B27/30;B32B5/20;B32B7/12;B29C55/02;B29C47/06;B29C55/08;B29C47/00;G09F3/06;B32B27/06 |
主分类号 |
B32B27/30 |
代理机构 |
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代理人 |
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主权项 |
1. A heat-shrinkable film for label, which comprises a foamed layer 10 comprising polystyrene as a principal component, and a pair of non-foamed layers 20 adhesively melted to either side of the foamed layer 10, wherein the foamed layer 10 and the pair of the non-foamed layers 20 are layered by coextrusion to provide a low specific gravity less than 1.0. |
地址 |
Chungcheongnam-do KR |