B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/528
B29C 47/88 (2006.01)
Patent
CA 1163068
D-12,738 TITLE METHOD AND APPARATUS FOR COOLING FILM BUBBLE OF LOW STRAIN HARDENING POLYMERS ABSTRACT OF THE DISCLOSURE A process and apparatus are disclosed for forming blown film of a low strain hardening polymer, such as a low pressure polymerized-low density ethylene copolymer, in- cluding an improved film bubble cooling technique which permits high production rates to be achieved with good film bubble stability. The disclosed process comprises cooling a molten film bubble by contacting the outside of the film bubble with separate annular streams of cooling fluid fed through at least two stacked annular cooling rings disposed around the film bubble, wherein all or substantially all of the cooling fluid exits the system though a common plane formed by the last cooling ring. The disclosed apparatus comprises means for forming a molten film bubble and means for cooling same including at least two separate annular cooling rings disposed around the bubble, each provided with means for feeding an annular cooling fluid stream against the bubble and further including means whereby all or substantially all of said cooling fluid exits the system through a common plane formed by the last cooling ring.
380761
Jones David N.
Kurtz Stuart J.
Hopley William G.
Union Carbide Corporation
LandOfFree
Method and apparatus for cooling film bubble of low... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for cooling film bubble of low..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for cooling film bubble of low... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-843868