Process and device for extruding plastic melts to form...

B - Operations – Transporting – 29 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B29C 47/20 (2006.01) B29C 47/90 (2006.01)

Patent

CA 2215947

In a process for extruding polymer melts (25) to form hollow chamber sections (21) by pressing the polymer melt through a shaping tool (24) with an internal shaping mandrel (26) and by subsequently sizing and cooling the hollow chamber section strand in a sizing and cooling unit (31) it is provided for the sizing and cooling of the hollow chamber section strand to be carried out in the sizing and cooling unit under extrusion pressure. A device for carrying out this process is characterized in that shaping tool (24) and sizing and cooling unit (31) are rigidly connected to form a closed system so that the strand extrusion pressure prevailing in the shaping tool can be propagated into the sizing and cooling unit, and that the shaping mandrel (26) protrudes out of the shaping tool (24) into the sizing and cooling unit (31).

La présente invention concerne un procédé d'extrusion de matières plastiques en fusion (28) pour l'obtention de corps creux (21) par pressage de la matière plastique en fusion au travers d'un instrument de façonnage (24) à l'intérieur duquel se trouve une baguette de façonnage (26), suivi d'une opération de calibrage et de refroidissement du corps creux dans une unité de calibrage et de refroidissement (31) sous pression. Un dispositif permettant la mise en oeuvre de ce procédé est caractérisé en ce que l'instrument de façonnage (24) et l'unité de calibrage et de refroidissement (31) sont fermement maintenus ensemble pour former un système fermé tel que la pression de moulage par extrusion, qui règne dans l'instrument de façonnage, peut s'étendre dans l'unité de calibrage et de refroidissement et que la baguette de façonnage (26) fait saillie de l'instrument de façonnage (24) dans ladite unité (31).

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Process and device for extruding plastic melts to form... 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 and device for extruding plastic melts to form..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and device for extruding plastic melts to form... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1994829

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.