B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/785, 18/972
B29C 65/02 (2006.01) B29C 47/00 (2006.01) B29C 47/08 (2006.01) B29C 47/20 (2006.01) B29C 47/88 (2006.01) B29C 47/90 (2006.01) B29C 53/78 (2006.01)
Patent
CA 2025995
A process for production of large calibre plastic tube, in which a hollow thermoplastic profile of rectangular cross-section is extruded and is coiled on a drum helically with contiguous turns with adequate deformability, and in which during the coiling operation the turns are welded together at the contact surfaces by a butt-welded seam under axial pressure and heat. The hollow plastic profile is moulded in an extrusion tool to form a multi-cell profile having outer profile walls and cell-forming webs and at the same time and/or thereafter, by internal cooling of the outer profile walls and the cell-forming webs, is sized and given a design strength which is stable up to a predetermined critical pressure. The calibrated mufti-cell profile is again heated at the contact surfaces to the welding temperature of the thermoplastic material. The butt-welded seam between the turns is welded with an axial pressure below the critical pressure of the design strength. Extrusion tools for performing the process are also described.
Charaktinos John
Dikis Byron
Borden Ladner Gervais Llp
Charaktinos John
Dikis Byron
George Aristovoulos Petzetakis
LandOfFree
Process for producing a large calibre plastic pipe and an... 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 producing a large calibre plastic pipe and an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing a large calibre plastic pipe and an... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1969924