Hermann Berstorff Maschinenbau Gmbh

Npo Norplast

Dynamit Nobel Aktiengesellschaft

Heinz Brinkmann

Gerd Capelle

Rolf Gersbeck

Wilhelm Brand

Siegfried Chszaniecki

Hans Brinkmann

Herbert Schulte

Horst Spielhoff

Eberhard Uhland

Eckart Schlomach

Wiktor A Teleschow

Stanislaw A Wolfson

Eckart Pantzer

Wadim G Nikolskie

Anatolie I Nepomnjaschtschie

Nikolai S Enikolopow

Lidia A Filmakowa

The invention is directed to a method and an arrangement for continuously producing a rubber base compound and a rubber end compound in a single stage for vehicle tires, drive belts, conveyor belts as well as for industrial rubber products. The rubber base compound and the rubber end compound are produced continuously in one and the same mixing arrangement which includes a twin-screw extruder.

Method and apparatus for the single-stage continuous production of a

The invention is directed to a method and an arrangement continuously producing a rubber base compound and a rubber end compound in a single stage for vehicle tires, drive belts, conveyor belts as well as for industrial rubber products. The rubber base compound and the rubber end compound are produced continuously in one and the same mixing arrangement which includes a twin-screw extruder.

Method and arrangement for the single-stage continuous production of a

A method and apparatus for pulverizing polymers. The apparatus comprises a hollow barrel within which at least one screw rotates. The interior of the hollow barrel is divided into a plurality of zones. Heating members are associated with a first of these zones and cooling members are associated with at least a second of these zones. Pre-crushing and pulverizing members are also disposed in said second zone. In the method, polymeric material is fed into the first zone of the hollow barrel and is fused therein. The fused material is then conveyed into the second zone wherein it is cooled, pre-crushed and pulverized. The powdered polymeric material is then discharged from said second zone. The method can therefore be effected continuously in a single apparatus.

Method and apparatus for pulverizing polymers

Apparatus for treating powdery rubber mixtures to form processed intermediate products comprises volumetric metering means; a filling extruder; a mixing and plasticizing portion located at the downstream end of the filling extruder and having a central toothed spindle, toothed planetary spindles and an internally toothed housing; and forming out means shown as an extruder cascade connected to the mixing and plasticizing portion and extruding material through a perforated plate with cutting blades. The mixing and plasticizing portion is of only short length and can effect intensive working but does so for only a short period of time on the material passing therethrough so that the material is not damaged by being over-heated.

Apparatus for treating powdery rubber mixtures

A temperable screw casing for a twin screw extruder for processing plastics comprises a supporting member and wear resistant liner disposed therein. The liner has a spectacle shaped bore accommodating both screws of the extruder. The supporting member, which engages around the liner, takes over the reinforcing function of the screw casing. Low technical manufacturing cost and satisfactory tempering of the screw casing is achieved by providing the liner with a circular external cross section, surrounded by a supporting member which has a circular internal recess. Axial tempering holes are provided in wedge shaped projections which extend into the spectacle shaped bore of the liner. Axial tempering holes are disposed opposite one another in the supporting member, at the sides of the spectacle shaped bore of the liner. These result in individual tempering systems, by which the liner and supporting member can be tempered independently.

Twin screw extruders

Apparatus for the preparation and extrusion of plastics material or rubber, comprising a planet rolling extruder and a feed portion disposed upstream thereof with a main shaft of the planet rolling extruder being surrounded by planet shafts and being driven jointly with a feed-screw of the feed portion, in which some of the planet shafts at their ends adjacent the feed-screw are reduced in section to form transfer shaft portions and thereby receiving chambers for material fed to the planet rolling extruder by the feed portion. The transfer shaft portions may be cylindrical with a diameter smaller than the diameter of the root circle of the planet shaft gearing or may have, adjacent the feed-screw, a diameter smaller than the root circle of the planet shaft gearing and increase in diameter in a direction away from the feed-screw until they achieve the full shaft outline.

Apparatus for the preparation of thermoplastic materials

An endless belt for use in a machine for laminating a continuous strip of chipboard panel to a decorative film by passing the chipboard and film between a heated revolving drum and the endless belt which is pressed against the drum, wherein the endless belt is formed as a web of flexible steel wire strands preferably including a layer of elastic material such as rubber.

Endless pressure belt for laminating chipboard panels

In apparatus for continuously pressing panels of particulate material, such as chips or fibres, a press drum with an endless belt looped partially therearound and pressed against the drum to press the panels between the drum and the belt, an inlet roller adjacent the drum, between which inlet roller and drum the belt carrying the particulate material to be pressed passes, a plurality of return rollers and a tensioning and control roller spaced from the inlet roller to form therebetween a horizontal pass of the belt onto which the particulate material to be pressed is sprinkled, the tensioning and control roller being adjustable in position to control tension and lateral movement of the belt.

Growing community of inventors

Bennigsen, Germany

Heinz Brinkmann