Techint Pomini

Various new designs of intermeshing rotor internal mixers have been proposed since the 1970s [33, 67 to 69]. In a 1987 patent application, Passoni [69] describes a design wherein the nip distance between the rotors may be varied. This allows the intensity of inter-rotor shearing to be varied during the mixer cycle for any particular compound and the shear intensity to be varied for different compoimd formulations. This machine is manufactured by Techint Pomini. 

In more recent years. Parrel Inc. has purchased Francis Shaw and Company. Intermeshing rotor mixers are also marketed by Techint Pomini and Krupp Gummitechnik, the successor company to Werner and Pfleiderer in producing internal mixers. Intermeshing rotor internal mixers are also made in Japan by Hitachi and Mitsubishi Heavy Industries. 

The tire industry in time decided they did not like the new Parrel Continuous Mixer. Parrel Inc., however, was able to successfully market their new machine to the new developing specialty compounding industry and to the chemical industry for incorporating stabilizers into nearly polymerized polyolefins. Parrel licensed their new machine to Kobe Steel and Pomini Parrel (now Techint Pomini). Similar continuous mixers were patented by Matsuoka et al. [203 to 206] of Stewart Bolling (Intercole Automation), now part of Kobe Steel. More recently, similar machines were developed by Japan Steel Works [207]. 

Finally, I must express my thanks to those companies who have so generously assisted in the preparation of this review, allowing the use of various illustrations from scientific papers prepared by them, for their comments given in discussions with them, and for their trust in me not to insult their products in comparison to others. In strict alphabetical order, these include Berstorff UK, Haaglunds Drives AB, John Waterhouse Ltd., Kobe Steel Ltd., Techint Pomini and ThyssenKrupp Elastomerteehnik GmbH. 

Whilst the basic profile of the intermeshing rotor manufactured by Techint Pomini is very similar to the original Cooke patent, the fill faetor has been... 

INTERMESHING MIXERS VARIABLE CLEARANCE VERSUS FIXED CLEARANCE Regalia R Moriconi M Techint-Pomini... 

A comparative study was made of the effidency of two intermeshing rotor mixers, one with fixed clearance and the other a VIC 165 variable intermeshing clearance mixer (Techint-Pomini), in the mixing of NR, EPDM and polyepichlorohydrin compounds. The results showed that the variable clearance mixer gave reduced cycle times with equal quality of the compounds produced, and that higher fill factors were possible with this mixer. The cost advantages of the VIC 165 were also analysed. 

Yao C H Manas-Zloczower I Regalia R Pomini L Case Western Reserve University Techint-Pomini (ACS,Rubber Div.)... 

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