公开(公告)号：US4217327A

公开(公告)日：1980-08-12

申请号：US890327

申请日：1978-03-27

申请人： Leo V. Cancio ,  Gerald W. Miller ,  Robert M. Mortellite ,  Anthony R. Steimle ,  Brian P. Peterson

发明人： Leo V. Cancio ,  Gerald W. Miller ,  Robert M. Mortellite ,  Anthony R. Steimle ,  Brian P. Peterson

IPC分类号： B29C53/00 ,  B29C37/00 ,  B29C45/00 ,  B29C51/00 ,  B29C59/00 ,  B28B11/08 ,  B65D65/28

CPC分类号： B29C59/007 ,  B29C37/0057 ,  Y10T428/15 ,  Y10T428/24744

摘要： Plastic films or sheets having tear lines formed therein are disclosed. These films are made by forming a score along a predetermined line in the surface of a plastic film to form a tear line and then restoring the scored film surface without eliminating the line of tear. The products tear very easily along predetermined lines even though the restored plastic films have enhanced impact strengths. By restoring the surface of the scored film, score lines become invisible to the naked eye and the useful life of the film is extended. Single-ply or multi-ply products are disclosed including products having an embossed or textutred surface, still without eliminating the capability for a smooth line of tear. The products have many utilities as structural materials which may be sized or torn by hand, including wall coverings, window shade coverings, rupturable packages and envelopes, to mention a few.

摘要翻译： 公开了其中形成有撕裂线的塑料膜或片。 这些膜通过在塑料膜的表面中沿着预定线形成刻痕而形成撕裂线，然后恢复刻痕膜表面而不消除撕裂线。 即使恢复的塑料膜具有增强的冲击强度，产品也能够沿着预定的线条很容易地撕裂。 通过恢复刻痕胶片的表面，评分线变得肉眼看不见，延长了胶片的使用寿命。 公开了单层或多层产品，包括具有压花或纹理表面的产品，仍然不消除光滑的撕裂线的能力。 这些产品具有许多用途，其结构材料可能被手工尺寸或撕裂，包括墙壁覆盖物，窗帘遮盖物，可破裂包装和信封等等。

公开(公告)号：USD126843S

公开(公告)日：1941-04-29

申请日：1939-11-21

申请人： Clopay Corporation

设计人： Arthur L. Thexton