Two Roll Mill Machine Details

HEXA PLAST Two Roll Mill Machines with fixed speed and friction is laid out for constant working conditions. The machine is accessible with roll diameters of 150 mm. (as per requirement). For relentless friction, the rear roll is driven by spur gears. In order to fulfill individual requirements, modifications for speed and friction are possible within certain steps.

The rolls are aligned in stiff frames. The rear roll is in a fixed position for good access to the rolls. The front roll is often moved with a hand shaft. The central adjustment assures parallel movement. The working width is laid out for both plastics and rubber processing. The drive system is provided with a knee-actuated switch for an emergency stop. The opening can be done by hand to the necessary safety distance however without turning of the rear roll.

Corrosion-resistant steel is employed to form these rolls and are surface hardened. A central lubrication system combined with a high-temperature resistant seal ring sallow and low maintenance operation. The Cartridges provide electrical heating energy. Heat distribution is controlled in three different zones in order to equalize the difference over the roll. The Two Roll Mill is equipped with a contactor control system. Roll temperature is controlled with digital controllers. The machine can be operated from both sides through the operating units which are mounted in an adjustable panel.

Electric and drive system is incorporated within the machine frame with easy accessibility for maintenance. The machine needs supply connections only and will be delivered with integrated controls.

Lab Two Roll Mill Features

– The laboratory two roll mills is a compact machine for mixing every kind of plastic and rubber material. The machine is effectively used for research, development and quality control.
– Laboratory Roll Mills are available in various roll diameters. Under constant working conditions, the basic machine allows mixing. Numbers of options are available thus customer requirements can be met.
– The temperature distribution is Uniform across rollers.
– Individually adjustable roller speed with a digital RPM readout to set different friction ratios.
– With the Long-Life-Cartridges the heating of the Rolls is provided electrically.
– Motor-Driven Nip Gap adjustment.
– PLC-control and Operating Panel Combination of touch screen enables comfortable operation of the machine

Two Roll Mill Machine Application Areas

– Two Roll Mixing Mills are generally used for Mixing and Kneading raw rubber, Synthetic rubber, Thermoplastics or EVA with chemicals into even materials.
– Polymer like HDPE, PVC, HIPS, LDPE, Natural Rubber, PP, ABS, PS, EVA etc. can be tested

What is Two Roll Mill?

Lab Two Roll Mill is an open type rubber refining machine. Rubber factory makes plastic rubber, mixed rubber or hot refining, out of a sort of rubber roller exposed machine.

There are two hollow rollers or drilling rollers rotating in opposite direction. The Front roller can move forward and backwards through manual or electric movements to regulate the roll distance and become accustomed to the operation requirements. The rear roll is fixed thus cannot be moved forward or backwards. The size of the two rollers is mostly identical, and that they rotate at different speeds.

With the rotation of the roller and the raw glue or glue material, the gap between the two rollers is drawn. It is subjected to intense shear and achieves the purpose of mixing. The mill is additionally employed in plastics processing and other departments.

People also used to call it 2 roll mill machines in the plastic products factory. The mixer is a kind of mixing plastics equipment that was applied earlier in the manufacturing of plastic products. On the production line of the calendaring machine, the function of the 2 roll mill machine is to combine and plasticize the raw materials. It provides more identical melting materials for the calendaring plastic products of the calendaring machine.

In the manufacture of cable materials, the opening and refining functions directly combine the powdery materials mixed according to the formula into melting materials. Then pressure into flake strip, in order that the granulator cut into granular. On the floor, the leather production line can directly provide a leather mixed plasticized uniform primer. It can also be recycled waste plastic film (sheet) in the mill re-refining plastic back.

What is the structure and classification of the two roll Mill?

Composition Of Two Roll Mill Machines

The two roll mill is mainly composed of

– Roller
– Bearing
– Frame
– Gland
– Driving device
– Distance adjusting device
– Lubrication system
– Temperature adjusting device
– Emergency brake device.

Even though the size of the mill is different, but its basic structure is similar. Within the process of rubber refining, the mill mainly relies on two relatively rotating rollers to squeeze and shear the rubber. After repeatedly kneading and the chemical action accompanying the kneading process, the chain of big molecules inside the rubber is broken. Various components inside the rubber are mixed evenly, and at last the purpose of rubber refining is achieved.

The film excluded in the roller gap is coated on one roller because of the difference in surface speed and temperature of two rollers. It returns to the other two rollers, thus repeatedly, completing the rubber refining. During plasticizing, the molecular chains of rubber change from long to short.

The elasticity goes from big to small. In the mixing process, the surface of each component of the adhesive is constantly updated and mixed evenly. In the batch operation of the mixer, after feeding the rubber material repeatedly through the distance several times and eventually cut the lower pieces.

The extrusion effect is due to the rubber material through the gradually reduced roller spacing, with the increase of transverse pressure and extrusion

Pressure increases; Shear action is due to the speed ratio of the front and rear roller, the greater the shear force.

Specifications of the mixing machine with “work roller part x roller diameter section length”, such as Φ 550 × 1500, unit is mm.

Part of China standard is the diameter of the roller before the number of Chinese phonetic symbols to indicate the use of the machine

The technical features of the machine shall include:

– Roller speed
– Speed ratio
– power
– Mixing capacity
– Adjustment range of roller distance
– External installation size
– Transmission mode

The Parts of the mill include:

– Rroller
– Rroller bearing
– Distance adjusting device
– Frame
– Safety brake device
– Rubber plate.