Thermoset plastics and powder coating production line. The excellent mixing capability, self wiping characteristics, adn accurate temperature control of co-rotating twin screw extruder enable thorough mixing of materials inside the extruder and essentially no-pressure discharging. This line is applicable to the production of polyester, epoxy, adn acrylic based power coatings, phenolics, adn epoxy sealing compounds.

Thermoset plastics and powder coating production line. The excellent mixing capability, self wiping characteristics, adn accurate temperature control of co-rotating twin screw extruder enable thorough mixing of materials inside the extruder and essentially no-pressure discharging. This line is applicable to the production of polyester, epoxy, adn acrylic based power coatings, phenolics, adn epoxy sealing compounds.

Main Technical Characteristic: 1.The changing during moving gap is zero 2. High disperse efficiency 3. Self-cleaning system 4. Double temperature PID control, control accuracy ±2°C 5. Barrel equipped with soft water recycle automatic cooling system 6. Low noise and high secure gear box system 7. Equipped with permanent magnetic iron remover 8. Low material consumption, electricity and material rate kg/h.kw is higher

Main Technical Characteristic: 1.The changing during moving gap is zero 2. High disperse efficiency 3. Self-cleaning system 4. Double temperature PID control, control accuracy ±2°C 5. Barrel equipped with soft water recycle automatic cooling system 6. Low noise and high secure gear box system 7. Equipped with permanent magnetic iron remover 8. Low material consumption, electricity and material rate kg/h.kw is higher

Batch Production Extruders for Thermosets powder coatings this is the latest small batch production extruder from topsun and has been designed specifically for thermoset applications such as Powder Coating, Toners and Electronic Moulding Compounds (EMC). The unit incorporates a set of chill rolls that are fully integrated into the machine.

Twin Screw Extruder, with high capacity, is an ideal equipment for extruding various chemical materials. such as powder paint , toner Raw materials are perfectly dispersed and distributed by precise kneading-elements in high speed. for example powder coatings extrusion main characteristics : * Homogeneous distributed and dispersive mixing. Strong self-cleaning ability and no solidified particles. * Screw elements on screw shafts can be combined according to technical requirements of powder coating production * Screw elements, liners, barrel and shafts with excellent performance, durable and long service life * Gear box equipped with a separate lubrication and cooling system, has advantages of high torque, low noise≤60DB, high wear resistance, long service life. Equipped with torque limiter (Optional) * Homogeneous and accurate feeding system is designed with metering screw. Anti-bridging device is equipped. Metal separator is optional

With a homogeneous dry blend of raw materials, the extrusion process can commence. The extrusion step can be described as the “paint-making” process. This is where the powder coating formula is compounded. At this point the formula is locked-in, and very little can be altered (with the exception of particle size reduction) after this process. Two types of mixing are accomplished in successful extrusion. The resins, additives and pigments are intimately distributed to create a consistent blend. This uniformity of mixing affords consistent appearance and performance of the finished coating. Inconsistent mixing typically results in variable gloss, smoothness and possibly film performance.

twin screw extruders regarding powder coating manufacturing, process for manufacturing a powder coating comprising the steps of: Preparing a powder coating premix comprising a resin and optionally a crosslinker therefor; feeding the premix through a melt extruder, wherein the melt extruder conditions comprise a temperature of from 100 DEG to 200 DEG C and a pressure of from 1 to 16 bar; cooling the extruded material; and comminuting it to fine particles, said process being characterized in that from 1 to 25 wt. % (based on the weight of said premix) of a suspension or dispersion of a particulate material in water is added to the melt extruder.

The Best Twin-Screw Design for Powder Coating we manufactures a comprehensive range of twin-screw extruders specifically for powder coating production, from small batch production, up to production scale .

co-rotating twin screw structure. Multi-component raw materials can be fully hot-melted under the precise intermeshing action by the conveying and kneading elements mounted on the screws, to achieve good dispersion and kneading effect. this is the most vital equipment for powder paint manufacturing combined with cooling belt and flaker

The leading high free volume clamshell barrel extruder for powder coating Alternative barrel lengths To process the full range of formulations Hydraulically operated clamshell barrel For quick and easy cleaning and maintenance High free volume Excellent feeding of fine powders

powder coating compounding line , Powder Coating Specialists, At the forefront of powder coatings extrusion technology.

An integrated range of twin screw extruders , Powder Coating Capability leaders in twin screw technology, renowned as the leading manufacturer of powder coating twin screw extruders and associated equipment

manufacturing a comprehensive range of twin-screw extruders specifically for powder coating production,specifically engineered for the requirements of powder coating.

specifically designed for all types of powder coating formulations, including epoxy, hybrids, polyester, acrylics and fines recycling. They provide continuous production at outputs designed .

outlining the process for manufacture of powder coatings and describe the application of small twin screw extruders to melt -mixing powder coating formulations, for both product development and quality control.

Theory of Operation/ General General mixing theory indicates that dispersion is best accomplished at high viscosity. In high viscosity regions the interparticulate shear is greatest, causing maximum break-up of agglomerates and dispersion of the phases. Thus, a mixing device which melts the resin "instantly", and maintains the entire mass at uniform high viscosity while mixing makes an ideal mixer. The extruder is designed to melt resin by mechanical energy being converted directly to heat by interparticular friction within the resin. This causes a rapid melting of the resin, minimizing the temperature variation within the melting mass. Thus, the viscosity is uniform throughout the mass, maximizing the dispersive mixing.

Extruders designed to manufacture powder coatings employ a single screw or twin-screw mechanism. Single screw types have flights along the circumference of the screw. These flights convey the mixture into pins that radiate from the interior of the barrel. This creates shearing of the material that in turn melts the mass and affects the distribution and dispersion of the components. The molten mass exits the barrel and is then cooled and broken into flakes.

Operation of the twin screw extruder Colbert 5 describes the performance of extruders in terms of a shear history resulting from a combination of the shear rate and the time material is exposed to it (residence time). Co-rotating twin screw extruders normally operate in a starve fed manner; that is the solids conveying capacity exceeds the rate at which useful energy can be applied to the premix. The output of the extruder is controlled separately by a volumetric screw feeder and hence output and screw speed can be varied independently up to the torque and speed limits of the extruder. These limits define the total range of operation and the extruder can be operated anywhere below the maximum torque line. Within this regime, mechanical energy input (specific energy), shear rate, residence times - and therefore product quality - can be varied. An understanding of the processing behaviour of Powder Coating premixes