Posts: 1
From:Medford, MA, US
Registered: May 2005

posted May 22, 2005 06:39 AM               

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Hi Everyone,

I bought a second hand extruder two stage, 120mm, for PVC extrusion. The previous owner ran the machine for 11 yrs. The technology is from FIAP ITALY. The equipment is worn out , so i have ordered a new set of screw and barrel. The gap between the screw and the barrel is 1.2mm each. I got the formulation of the previous owner tested and it has a fusion time of 4.2 mins whereas for the same formulation my fusion time is 2 mins. Does anyone have a clue on this. can you suggest the additives to delay fusion. This is UPVC. I am currently using Ac629, AC316a, G741, G322. Will using a higher K value resin help? I am currently using K-60, same as the previous owner.

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Posts: 383
From:McHenry, IL USA
Registered: Nov 2002

posted July 09, 2005 08:30 PM               

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Simply lower your temperature profile and screw RPM to delay fusion.

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Posts: 383
From:McHenry, IL USA
Registered: Nov 2002

posted July 09, 2005 08:30 PM               

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Simply lower your temperature profile and screw RPM to delay fusion.

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