Temporary Mold Texturing
IMM 04/02

Does anyone know of any products that can be used to temporarily texture an injection tool? A spray-on or some otherwise applied texture that could be easily removed would be helpful. I want to evaluate the effects of texture on flow lines I'm seeing in a new tool, and I haven't received texture approval yet.

I've had a lot of tools run with and without texture. I have not seen a big difference in the outcome except in the very thin-wall parts. Do your process study with black material. Move the knitlines with parting line full venting and atmospheric vents at critical points. A flow analysis will predict the problem area before you shoot it. Shear is the big problem with a lot of materials. — F.Williams, consultant, Hamden, CT, (203) 288-1374, fcwilliams3@prodigy.net.