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Kenplas Forum ==> Trouble Shooting -- PET Preform Injection Molding ==> differet opacity of preform wich made from two different row material as pet resin from two company
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Hey can i know the names of the companies
try getting their COA (Certificate of analysis) this haziness of pet is due to its chemical composition. Low level of IPA ( Iso phathalic Acid ) causes this haziness
in fact IPA is added with combination of PTA ( Phthatalic Acid)to reduce PET Tg and better preform quality.

U can also try low chilled water temp and low cycles if ur machine is equipped with a post cooling system.

if i cud be of any assistance do ask.

Fine
Poor
3/28/2010 12:16:26 AM By Tajdar Khan
We have two kind of PET resin made by two different companies and we use them in same condicion but one of them is more opaque than the other .WE change also the oprating condition to solve the problem for this kind of resin but never the transparency of it is like the other.Do you think what is the problem of the resin and how the producer can solve the property of it.

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3
 Poor
1
 3/19/2010 11:11:23 PM By hadi sayad
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