B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 65/02 (2006.01) A61L 9/12 (2006.01) B29C 65/00 (2006.01) B65B 7/28 (2006.01) B65D 77/20 (2006.01) C08J 5/12 (2006.01)
Patent
CA 2124448
2124448 9310959 PCTABS00022 The invention relates to a method of, and apparatus for, welding an element comprising paper to a thermoplastic material, without pre-treatment of the plastics material. In one described embodiment a laminate (12) comprising paper, with a vapour permeable, liquid impermeable coating on one major surface, was successfully welded to a polypropylene material (15) some 1.5 mm thick, the uncoated surface of the laminate forming the interface with the polypropylene, by subjecting the interface to conditions between two ranges of parameters, a temperature of 185 ·C and a pressure of 460 kPa for a period of 10 seconds and a temperature of 220 ·C and a pressure of 460 kPa for a period of 5 seconds. All the welds effected between said ranges of parameters produced an acceptable weld of the paper to the thermoplastics.
Mccarthy Tetrault Llp
Reckitt & Colman Products Limited
LandOfFree
Improvements in or relating to welding does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Improvements in or relating to welding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Improvements in or relating to welding will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1724884