Direct gas foaming in twin-screw extruders. (Extrusion).A new in-line process to extrude extrude /ex·trude/ (ek-strldbomacd´) 1. to force out, or to occupy a position distal to that normally occupied. 2. in dentistry, to occupy a position occlusal to that normally occupied. sheet and profiles using direct-gas foaming with twin-screw extruders is under development at Davis-Standard Corp., Pawcatuck, Conn. Davis-Standard entered the foam extrusion market two years ago, initially with direct injection of hydrocarbon hydrocarbon (hī'drōkär`bən), any organic compound composed solely of the elements hydrogen and carbon. The hydrocarbons differ both in the total number of carbon and hydrogen atoms in their molecules and in the proportion of hydrogen and atmospheric gases (C[O.sub.2] and nitrogen) into tandem (Tandem Computers Inc., Cupertino, CA) A former major manufacturer of fault-tolerant computers founded in 1974 by James Treybig and provider of the early 21st century technology for HP's enterprise computing strategy. single-screw extruders. Now the company is applying direct gas injection to counter-rotating twin-screws of 94 to 175 mm diam. Applications include HDPE HDPE abbr. high-density polyethylene , PP, and styrenics. Tel: (860) 599-1010 www.davis-standard.com |
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