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ISamson
Participant

Join Date: Jul 2008
Posts: 4

PE Films

07/28/2008 11:19 PM

Hi there Can some one let me know how shrink % is effected in shrink films during the processing - the blow up ratio of the bubble (to what extent?) or the formulation (resins used?) Is there any effect on the other parameters such as gauge & slip (COF) values, appreciate your feed back
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Pathfinder Tags: PE Films Shrink / Slip / Gauge
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Poison
Power-User

Join Date: Sep 2007
Location: Brampton, ON, Canada
Posts: 218
Good Answers: 3
#1

Re: PE Films

07/30/2008 8:47 AM

Good questions. I'm not sure to what extent, but the higher the blow up, the more the shrink. I also believe that the lower the resin density the more shrink you will acheive.

Die design probably has the biggest effect on shrink. I believe you get the best results with a smaller die gap.

As you can tell I'm not very sure, we have not done much work with shrink films. I am interested in what other answers you receive.
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extruder-machinery
Participant

Join Date: Aug 2008
Location: Shanghai
Posts: 4
#2

Re: PE Films

08/01/2008 4:24 AM

If you do casting-film ,maybe I could give you some advices.

__________________
 Professional Manufacturer for Plastic Sheet Extrusion Equipment from China
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