Hollow solid generated by rotation and method for making same

Details Hollow solid generated by rotation and method for making same Hollow solid generated by rotation and method for making same

B - Operations, Transporting

29

C

B29C 70/38 (2006.01) B29C 53/80 (2006.01)

Patent

CA 2347147

The invention concerns a hollow solid (1) generated by rotation whereof the wall comprises a first inner zone (a) made, at least on its outer periphery, of a single thermoplastic material A, and a second zone comprising a first part (b) arranged continuously with the first zone (a) and made of a thermoplastic material identical with material A and continuous glass yarns embedded in said thermoplastic material and a second part (c) forming the hollow body outer periphery and made only of thermoplastic material. The invention is characterised in that the wall has a vacuum volume proportion V¿V? less than 0.5 %, preferably less than 0.2 %.

La présente invention est relative à un corps de révolution creux (1) dont la paroi comprend une première zone interne (a) constituée au moins sur sa périphérie externe d'une matière organique thermoplastique A unique, et une deuxième zone comportant une première partie (b) agencée dans la continuité de la première zone (a) et constituée d'une matière thermoplastique identique à la matière A et de fils de verre continus noyés dans ladite matière thermoplastique et une seconde partie (c) formant la périphérie externe du corps creux et constituée uniquement de matière thermoplastique. Selon l'invention, la paroi présente un taux volumique de vide, VV inférieur à 0,5 %, de préférence inférieur à 0,2 %.

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