| 摘要 |
<p>Multilayer peelable thermoplastic film which can be sealed on itself or a substrate comprises two layers of plastic material, one of which can be sealed by soldering and the other of which is dry. Multilayer peelable thermoplastic film which can be sealed on itself or a substrate comprises layer of plastic material (A) which can be sealed by soldering and, on the face opposite to the sealed face, it is bound to a dry layer of plastic material (B); the bonding force being greater than the breaking force of the dry layer of plastic material, while the other layer (A) has a relative weakness level with the solder such that when the film is separated, the layer (A) is neatly broken level with the solder and the dry layer (B) fractures; the relative density of (B) being at least 0.9. An Independent claim is also included for a method of making said film by (co)extrusion.</p> |
