B - Operations – Transporting – 26 – D
Patent
B - Operations, Transporting
26
D
164/18
B26D 1/00 (2006.01) B26F 1/18 (2006.01) B31B 19/14 (2006.01)
Patent
CA 1177383
D-12,643 TITLE: A PROCESS FOR CUTTING AND PERFORATING PLASTIC FILM ABSTRACT OF THE DISCLOSURE A process is disclosed for cutting or perforating a plastic film sheet material with a knife of improved dura- bility which comprises a metal substrate coated on one side only with a hard material such as tungsten carbide. A pre- ferred embodiment comprises a process for making a continu- ous strip of interconnected and separable plastic film bags of low pressure-low density polyethylene from a tube of same including the steps of sealing the tube across its width at longitudinally-spaced intervals and perforating the tube at similar intervals, to provide tear-off lines, with a perfor- ating blade provided with a coating on one side only of a hard material such as tungsten carbide. Such a perforating blade has a significantly improved service life, as compared to uncoated similar blades or similar blades coated on both sides, in processes for making bags from low pressure-low density polyethylene.
378630
Hopley William G.
Union Carbide Corporation
LandOfFree
Process for cutting and perforating plastic film does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for cutting and perforating plastic film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for cutting and perforating plastic film will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1202884