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Kenplas Forum ==> Blow Molding (Machine) ==> pet process
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Ventilation 90% for preform, and 10% for machine.

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11/19/2007 11:16:32 PM By Kenneth
Hello, what is the oven ventilation for? it helps the preform or the machine
regards

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7/20/2006 9:30:55 PM By Yannis
Dear Nasir,
In the pet blow molding process,we reheat the preforms & then stretch & blow simultaneously as per the mold type.
In the blow process there many process variables which can affect the bottle blowing.
PROCESS VARIABLES:
1-preform temp.
2-preblow pressure/primery blow pressure
3-preblow flow
4-stretching pressure
5-preblow delay time
6-stretch rod delay time
7-high pressure delay time
8-high pressure
9-exhaust time
10-oven ventilation
11-oven lamps settings

and many other things which we consider at the time of blowing e.g.preform I.V.,preform length,type of neck & preform.

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1/29/2006 3:17:54 PM By baba pet
IT IS A BI-AXIAL STRETCHING PROCESS

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1/16/2006 6:36:10 PM By ANWAR SHAHID
what is a process?

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12/14/2005 1:25:30 PM By nasir
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