发明名称 |
HEAT-SHRINKABLE POLYOLEFIN LAMINATED FILM |
摘要 |
PROBLEM TO BE SOLVED: To provide a heat-shrinkable PO (polyolefin) laminated film good in balance of quality as a film for a shrinkable label. SOLUTION: In the laminated film, a layer of a resin composition containing a PO resin as a main component is made an intermediate layer, and surface and back layers of a resin composition which contains a cyclic PO resin as a main component and has a glass transition temperature of 50-80°C are laminated on both sides of the intermediate layer. The heat-shrinkable PO laminated film satisfies the following (1) to (4). (1) The thickness ratio of the layers of the laminated film is shown by the formula: surface layer/intermediate layer/back layer=1/6/1-1/2/1. (2) The specific gravity of the laminated film to which printing treatment is applied is below 1. (3) The ratio between the storage modulus of elasticity (E11) at 20°C and the storage modulus of elasticity (E12) at 80°C of the laminated film when measured in the conditions of a frequency of 10Hz and a strain of 0.1% is expressed by the formula: E11/E2=10-100, the peak of loss tangent of the laminated film exists at 60-80°C. (4) The storage modulus of elasticity (E2) at 80°C of the laminated film when measured in the condition of a frequency of 10 Hz and a strain of 0.1% is 5-50 MPa. COPYRIGHT: (C)2005,JPO&NCIPI
|
申请公布号 |
JP2005014428(A) |
申请公布日期 |
2005.01.20 |
申请号 |
JP20030183071 |
申请日期 |
2003.06.26 |
申请人 |
MITSUBISHI PLASTICS IND LTD |
发明人 |
NEMOTO TOMOYUKI;YAMADA TAKEMIKI;TAKAGI JUN |
分类号 |
B32B27/00;(IPC1-7):B32B27/00 |
主分类号 |
B32B27/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|