| 摘要 |
The plastic-film arrangement (1) having seal- and peeling-properties for a lid film, comprises a seal layer (2), a peel layer (3), and a back layer (4) on a side turned away from the seal layer, which consists of a material sealable with a plastic. The peel layer consists of the material delaminating at the boundary layer to the seal layer or the boundary layer to the back layer, which consists of the material supporting the peel layer. The peel layer consists of the polymer, and another material is added that is also the polymer, where the materials have a limited compatibility. The plastic-film arrangement (1) having seal- and peeling-properties for a lid film, comprises a seal layer (2), a peel layer (3), and a back layer (4) on a side turned away from the seal layer, which consists of a material sealable with a plastic. The peel layer consists of the material delaminating at the boundary layer to the seal layer or the boundary layer to the back layer, which consists of the material supporting the peel layer. The peel layer consists of the polymer, and another material is added that is also the polymer, where the materials have a limited compatibility with each other. The first material has 40-60% portion of the peel layer and the second material has 60-40% portion of the peel layer. The back layer has an E-modulus of 1000 MPa, where an additional film layer follows the back layer (4), and the film layer has barrier properties and adhesion promoting layer. The film arrangement is produced in an extrusion or coextrusion, and is performed in an unstretched or stretched manner, where a cast or blowing process is used. |
