Mold release & flow aid for PVC footwear.Field tests reportedly show that a new process aid and mold release improves flow and reduces heat history in PVC PVC: see polyvinyl chloride. PVC in full polyvinyl chloride Synthetic resin, an organic polymer made by treating vinyl chloride monomers with a peroxide. footwear production and provides excellent release at a use level of only 0.3 phr. MoldWiz INT-66PV from Axel Axel: see Absalon. Plastics Research Laboratories, Woodside, N.Y., is said to have solved flow problems for a PVC footwear molder mold·er v. mold·ered, mold·er·ing, mold·ers v.intr. To crumble to dust; disintegrate. v.tr. To cause to crumble. See Synonyms at decay. that used up to 40% regrind, which reduced compounding throughput by more than 20% and resulted in high molding rejects. Use of INT-66PV gave compounding throughput equal to or better than with virgin resin alone plus good cosmetic results in molding. In another case, INT-66PV was added to a PVC footwear compound containing chemical blowing agent. The process aid allowed the compound to be mixed at 35[degrees]F lower temperature and lower shear rates Shear rate is a measure of the rate of shear deformation:  For the simple shear case, it is just a gradient of velocity in a flowing material. , which made it possible to use less of the costly blowing agent. Tel (718) 672-8300 * PTDirect: 343LP [ILLUSTRATION OMITTED] |
|
||||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion