| 摘要 |
The invention relates to a protecting bond film. The film is provided with a caking agent layer on the hard paint film of a film substrate with a hard paint layer, wherein the elasticity modulus and the thickness of the film substrate are respectively from 3 to 7GPa and from 38 to 100 mums, the thickness of the hard paint layer is from 5 to 25 mums, the pencil rigidity of the hard paint layer surface of the hard paint film is above 3 Hard, the thickness of the caking agent layer is from 5 to 20 mums, the whole thickness is from 60 to 150 mums, besides, the deposited elasticity modulus at 80 DEG C is above 1.0 *10<5> Pa in a dynamic viscoelastic spectrum when a frequency is below 1 Hz. |
