The following items were gathered by reporters Bill Bregar and Bruce Vernyi at K'95, held Oct. 5-12 in Dusseldorf, Germany.
Frankfurt, Germany-based Hoechst AG has used metallocene catalyst technology to develop a line of polypropylene resins.
The company announced at K'95 in Dusseldorf that it is planning to use metallocene technology at a facility in Knapsack, Germany, to make 330 million pounds of PP a year. Production will start in early 1996.
Hoechst has a joint develop-ment agreement with Exxon Chemical Co. of Houston, which has aided the development of its metallocene PP resins, the company said at a news conference.
Gneuss shows off new pruging system
Screenchanger manufacturer Gneuss Kunststofftechnik GmbH showed production of a high-quality flat film using a Gneuss rotary-disk screenchanger.
In recycling, the German company exhibited a patented purging system. Screen packs are purged using high-pressure cleaning pulses, instead of other methods currently available such as back flush or self purging. The fully automatic system allows packs to be reused up to 100 times, Gneuss said.
The firm's U.S. unit, Gneuss Inc., is based in Matthews, N.C.
In discontinuous screenchangers, Gneuss showed the patented LPS sealing system.
Gneuss also showed a mercury-free melt-pressure transducer with hydraulic pressure transfer.