Powder Coating

COPERION K-TRON FEEDERS

Coperion K-Tron screw feeders are very common and economical feeders for powder coating processing. Both single screw and twin screw feeders are availabe in a wide range of sizes to meet your feed rate requirements. They can be used for free flowing powders and fine granulates, as well as for difficult to feed materials such as pigments, sticky, bridging or flooding powders. 

MECHATRON CONI-FLEX FEEDERS

Versatile and accurate, the MechaTron Coni-Flex is suitable for volumetric or
gravimetric feeding of powder coatings pre-mix into the extruder. The unique
design of the flexible feed hopper ensures reliable product flow without  bridging and deposits to ensure product quality and process performance.

With accuracies of 0.5% of feed rate setpoint, the MechaTron Coni-Flex is not just accurate and reliable, it’s also designed to be simple to operate, clean and maintain. The easily accessible internals ensure straightforward cleaning, making the MechaTron Coni-Flex ideal for fastpaced cleaning cycles and colour changes to increase uptime and production output.

EXTRUDERS

Coperion offers ZSK twin screw extruders with closed process sections in individual lengths while Baker Perkins provides extruders with clam shell process sections. 

All twin screw extruders offer high specific torque, making it possible to process ingredients reliably and very gently to produce powder coatings of very high quality at high throughputs. The extruder portfolio covers everything from small laboratory extruders to big production lines. 

ZSK Mv¹⁴ Extruders

Due to their excellent mixing behavior and the gentle product handling ZSK Mv¹⁴ extruders are characterized by absolutely homogeneous distribution of the paint components in the powder.

Premixed raw materials are fed into the ZSK and are processed very gentle and extremely flexible. The screw speed, residence time and throughput rate can be adapted quickly and individually to your requirements. Processing of high percentage of fines is possible with optimized process set-up.

Advantages

• Very high throughput rates
• Maximum productivity
• High flexibility in speed, residence time and throughput rate
• Short cleaning times
• Very good feeding of fines due to high-end feeding technology and deep flights of the extruder twin screws
• Gentle handling of the product

ZS-B SIDE FEEDER

Coperion's ZS-B side feeder is the ideal solution for even faster recipe changes and the recycling of fines.

BAKER PERKINS EXTRUDERS

Baker Perkins’ twin screw extruders are purpose-designed for powder coating processing.

Careful consideration of screw profiles, high free volume geometry and motors offering just the right amount of power and throughput required enable Baker Perkins’ extruders to process the greatest quantity of product for the minimum of power and cost.

COOLING CONVEYOR

Baker Perkins’ stainless-steel belt cooling conveyors are designed to cool extruded material efficiently, and produce flakes which are ideally sized for feeding into the milling stage of the process. The range is sized to match the outputs of the HPX and MPX extruders and integrates seamlessly into the production line.

Integration into the control system of the entire plant allows automated start-up and shutdown sequences to be actioned from a single point of control with one button – minimising start-up and shutdown times and maximising efficiency.

The flaking unit also has its own air vortex cleaning system for dust extraction,
resulting in reduced labour requirements and decreased turnaround time. This
further reduces any risk of contamination, ensuring high-quality end-products.

PPS AIR CLASSIFIER MILLS

The Kemutec PPS Air Classifier Mill controls the particle cut point of the finished powder using a built-in classifier that limits the maximum particle size of the milled powders exiting the grinding chamber.

Kemutec PPS Air Classifier Mills can grind powder coatings to a broad range of different particle size distributions, from coarser grades through to the finest grades. The design of these mills has been continuously improved to meet the changing demands of the powder coatings industry. All models are simple to operate, clean and maintain.

• 10 models, from lab through to large-scale production mills
• 5 kW to 400 kW main drives
• Typical milled particle size range down to a D50 of 20 μ to 5 μ
• Optional easy-clean models
• 10 Bar EPSR explosion protection mills
• Multiple mill system configurations are available

PPS EASY-CLEAN AIR CLASSIFIER MILLS

The latest easy-clean models allow full cleaning access to the mill’s internals
and grinding media, resulting in shorter clean down times during colour changes – which reduces downtime and maximises production uptime.

Benefits:

• Easy access to the mill’s internals and grinding media
• Fewer components to clean
• Faster clean down times
• Minimized risk of crosscontamination
• Increased production uptime
• Opportunity for increased throughputs

PPS CYCLONE COLLECTORS

To complement the PPS range of Air Classifier Mills as part of an overall system, Kemutec supplies a range of versatile cyclone collectors. For straightforward collection of the milled powder from the conveying air, we offer
a range of high-efficiency static cyclones, with recovery rates in excess of 98.5%. When there is a requirement to separate the milled powder into both coarse and fine powder fractions, we offer dual cyclone technology, where the coarse portion is collected in a primary classifier cyclone and the fine portion is collected in a secondary static cyclone.

Benefits

• Ability to separate fines and coarse portions of milled powders
• Provides cleaner ‘cuts’ of milled powders, with reduced fines or oversize
• Option to operate either the dual cyclone collection or to revert to the standard single cyclone collection through simple pipework changes

KEK CENTRIFUGAL SIFTERS

In powder coatings production lines where there is a requirement to ‘scalp’ the milled powder before packaging, the Kemutec KEK Centrifugal Sifter is an ideal choice for high-efficiency screening. As standard, all models in the range feature proven centrifugal sifter technology and a cantilever shaft which provides user-friendly access for rapid cleaning.

RANGE INFORMATION

• 7 models to suit a wide range of throughputs
• Models that can process from a few kilograms per hour to over 90 tonnes
• Available with nylon, stainless-steel woven wire and wedge wire screens

BENEFITS

• High-efficency, high-capacity performance
• Quick, easy-clean design
• Cantilever shaft results in no oversize bearing or seal
• 30-second screen changes

VIBRATING FLAT DECK SCREENERS

Vibrating flat deck screeners are an alternative to Kemutec KEK Centrifugal
Sifters in powder coating production lines. Vibrating control screeners are designed for control and safety screening of high volumes and also provide multi-deck screening capability where more than one separation is required.

KEY FEATURES

• Wide range of sizes to suit varying throughputs
• Multiple screening decks for various sifting splits
• Ultrasonic vibration for increased sifting throughput, efficiency and continuous screen cleaning
• Easy access for screen cleaning and changes
• Re-screening and screen replacement

SERVICES

Within our comprehensive services we offer training programs that give your production and maintenance staff a keen awareness how to work with technically demanding machines and plants. The training courses are targeted to the requirements of the participants – from beginners to specialists.