F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
189/66, 154/30.0
F16L 9/12 (2006.01) B29C 47/00 (2006.01) B29C 65/02 (2006.01) F16L 11/11 (2006.01)
Patent
CA 1037396
ABSTRACT OF THE DISCLOSURE A novel plastics tube is provided herein. The tube has applied thereto a plurality of longitudinal strips on the outer surface to increase the surface area thereof to enable the tube to be gripped more readily during the application of couplings and the like. A method of manu- facturing such a tube is also provided, including the steps of extruding the tube, contacting a substantially continuous length of thermoplastics strip with the surface of the tube after extrusion at a temperature at which the tube and/or the strip is above its softening point, pressing the tube and the strip together and thereafter cooling to cause or allow fusion between the tube and the strip.
241335
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