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“Significant productivity gains may be being missed”
‘Sipzjkant productivity ins may be being missed”
The advantages of using the right processing sic: apparent, but increasingly processors are making significant gains in productivity by paying more attention to the subject. Indeed there is also the challenge of finding the right combination of desired mechanical properties and being able to process a compound in the most technically competent and economic way. In this issue of Plastics Additives 8 Compounding we have a number of articles on the topic of processing aids. Nancy Teufel of US-based Axe1 Plastics Research Laboratories discusses the use of internal lubricants in injection moulding applications. The conclusion is that although many injection moulders will often not consider the use of an internal lubricant, particularly if they are not experiencing major processing problems, significant productivity gains may be being missed. The introduction of perfluoropolyether oils as additives for thermoplastic and thermosetting polymers is discussed by Bruce Ulissi of DuPont Fluoroguard. He explains that not only can there be significant processing benefits but many property enhancements, some unexpected, are obtained through their use. Finally, we look at the expansion of the Dynamar range of polymer processing additives by Dyneon. They have long been used in polyolefin blown film applications for the elimination of melt fracture, reducing die build-up and gel formation, as well as offering possible output improvements and reducing energy consumption. Now new grades are available for use in resins other than LLDPE and applications beyond melt fracture. On the equipment front Alan Smith takes a look at pelletizers and reviews what is currently available on the market. Manuf$cturers of underwater pelletizers and traditional strand pelletizers are improving performance and reliability and are matching their products more closely to the characteristics of crystalline and glass-fibre reinforced materials.
Mark Holmes Editor
Plastics Additives 8t Compoundingjanuary
200 I
The advantages of using the right processing sic: apparent, but increasingly processors are making significant gains in productivity by paying more attention to the subject. Indeed there is also the challenge of finding the right combination of desired mechanical properties and being able to process a compound in the most technically competent and economic way. In this issue of Plastics Additives 8 Compounding we have a number of articles on the topic of processing aids. Nancy Teufel of US-based Axe1 Plastics Research Laboratories discusses the use of internal lubricants in injection moulding applications. The conclusion is that although many injection moulders will often not consider the use of an internal lubricant, particularly if they are not experiencing major processing problems, significant productivity gains may be being missed. The introduction of perfluoropolyether oils as additives for thermoplastic and thermosetting polymers is discussed by Bruce Ulissi of DuPont Fluoroguard. He explains that not only can there be significant processing benefits but many property enhancements, some unexpected, are obtained through their use. Finally, we look at the expansion of the Dynamar range of polymer processing additives by Dyneon. They have long been used in polyolefin blown film applications for the elimination of melt fracture, reducing die build-up and gel formation, as well as offering possible output improvements and reducing energy consumption. Now new grades are available for use in resins other than LLDPE and applications beyond melt fracture. On the equipment front Alan Smith takes a look at pelletizers and reviews what is currently available on the market. Manuf$cturers of underwater pelletizers and traditional strand pelletizers are improving performance and reliability and are matching their products more closely to the characteristics of crystalline and glass-fibre reinforced materials.
Mark Holmes Editor
Plastics Additives 8t Compoundingjanuary
200 I