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MAPP Plastics Discussion Forum

The MAPP Plastic Industry Discussion Forum allows members to rapidly communicate with each other. Post both questions and answers to questions that other MAPP members have about any industry topic from material and process issues to R&E Tax Credits and other business issues.

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Posted:  02 May 2012 14:32
Hi everyone,
We are working on a project using FR ABS which needs an extremely good surface finish and are having problems with flow lines.  We are currently painting this surface and would like to get away from it.  We have tried a few different materials and gating changes (and venting) with no major improvement.  We did try running a very hot  mold and this showed significant improvement, though created other issues.  We are working with Conair using a combination thermolator and chiller to heat up the mold surface just before injection and then cooling the mold back down.  The mold runs in a 850 ton press. 

Does anyone have experience with these machines or have one.  I am having a hard time justifying the expense for just two molds and am interested in farming out these two jobs.  Any help or advice would be appreciated.


Tom Graham
Posted:  03 May 2012 06:34
I understand where you are coming from regarding the cost of the alternating temperature controller.
Performance Plastics in Cincinnati, Ohio uses these type controllers with great success.  I don't believe they go as high as 850 ton but can defiantly talk to you about the technology. 
Feel free to contact:   
Tom Mendel
(513) 321-8404

Robert Jergens
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