Assembly methodand a plastic composite tube

Abstract

Assembly process and plastic composite tube Process for assembling, by fusion bonding using IR laser radiation, plastic multilayer tapes that comprise an oriented layer that is transparent to the radiation and a layer that absorbs this radiation, the tapes being fusion-bonded using the same technique to a plastic preformed support. Composite tube resulting from the fusion bonding of these tapes to a plastic core.

1 . A process for assembling multilayer tape, comprising fusion bonding tape by means of electromagnetic radiation, the tape comprising at least one plastic layer, which is oriented in at least one direction and is transparent to the radiation, and at least one layer that partially absorbs energy transported by the radiation, wherein one face of at least one tape of the assembly is fusion-bonded to a plastic preformed support.  
     
     
         2 . The process according to  claim 1 , wherein at least two tape are fusion-bonded.  
     
     
         3 . The process according to  claim 1 , wherein at least one layer of the plastic of the tape is oriented in a single direction.  
     
     
         4 . The process according to  claim 1 , wherein the electromagnetic radiation has a wavelength ranging from 700 to 1200 nm.  
     
     
         5 . The process according to  claim 1 , wherein the electromagnetic radiation is laser radiation.  
     
     
         6 . The process according to  claim 1 , wherein the plastic preformed support is an unoriented plastic tubular support.  
     
     
         7 . The process according to  claim 1 , wherein the material responsible for absorbing the electromagnetic radiation is carbon black.  
     
     
         8 . A plastic composite tube comprising an unoriented plastic core in which at least two adjacent thicknesses of multilayer tape are fusion-bonded, the tape being wound and bonded together, at least one layer of each tape being formed from a plastic transparent to electromagnetic radiation and oriented in at least one direction and at least one other layer of each tape comprising a material that absorbs electromagnetic radiation.  
     
     
         9 . The tube according to  claim 8 , wherein the layer comprising absorbent material is also oriented.  
     
     
         10 . The tube according to  claim 9 , wherein the tapes are formed from a layer of oriented material, transparent to the electromagnetic radiation at wavelengths ranging from 700 to 1200 nm, placed between two thinner layers comprising the same plastic oriented in the same direction as the transparent layer and also including a material that absorbs this radiation.