machinery | Materials handling


discharge and cleaning system for its Plasticolor volumetric dosing units and mixing stations. The operator places a container underneath the emptying hose, presses the cleaning button, and one minute later the unit is automatically emptied and cleaned. It is possible to empty and clean several units at the same time. Manual cleaning is not necessary, says Woywod.


Above: Woywod’s 4-litre weigh- ing hopper is designed for granular, free flowing materials and regrinds


“Maguire has designed the LoPro system to be


affordable, easy to use, readily installed in existing production facilities, and even adaptable to a third-party vacuum system,” said Frank Kavanagh, vice president of sales.


“Its simplicity alone will enable more plastics


processors to obtain the productivity benefits of an automated loading system.”


Free flow Woywod Kunststoffmaschinen has developed a 4-litre weighing hopper (TRW 4L) for processing quantities up to around 80kg/h. This compact, low cost weighing hopper adds to the


company’s existing range of weighing hoppers and loss-in-weight systems. It is designed for granular, free flowing materials and regrinds and can be used in all areas of the plastic processing. The hopper fits into a Plasticolor modular system,


Right: Coperion K-Tron’s


Gamma-Bend is a deflector elbow that


prevents angel hair build-up


and can be used to upgrade existing equipment. Three different versions are available: a small hopper that is manually refilled by the operator; a version with an inlet funnel and hopper loader, for automatic refilling; and one with storage hopper and butterfly


valve, for automatic refilling. In combination with the Plasticolor 1500 dosing unit,


it can be used as gravimetric single dosing unit or in colour change systems. The weighing hopper is positioned on a slanted extension in order to avoid collision with the main material hopper. Very small quantities can be dosed in gravimetric operation. Woywod has also developed an automatic


38 FILM & SHEET EXTRUSION | May 2017


Build-up gets the elbow Meanwhile, Coperion K-Tron has developed several materials handling innovations, including the Gamma- Bend – a deflector elbow that prevents angel hair build-up, especially during 90° direction changes. As a result of the special geometric design as a sectional elbow, pellet grains only come into brief contact with the elbow wall and are transported directly to the next section without needing to glide at all, according to the company..


With its new Electronic Pressure Compensation


(EPC) system, the company presents a simple electron- ic solution for accurate and steady pressure compensa- tion for feeder hoppers or outlets. Its main advantages include improved accuracy and reliability, lower initial cost and easier installation compared to traditional mechanical pressure compensation systems. The modular design incorporates pressure sensors and electronics tailored to interact with the company’s KCM feeder control system.


At the same time, its Smart Flow Meter is a high-


precision device that can feed, meter or record bulk material flows reliably and also be integrated into control systems. Gravity causes the material to flow into the upper measuring channel, which is designed as an inclined slide and is mounted on a load cell. Because only the force component that impacts the slide vertically is measured, all the abrasion influences are elimi- nated. The load cell in the vertical channel located below records the forces caused by the impact of the bulk material flow. The computer uses the two measured


values to determine the actual flow rate per unit of time.


Click on the links for more information: ❙ www.sp-protec.com ❙ www.kreyenborg.com


❙ www.moretto.com ❙ www.conairgroup.com


❙ www.mti-mixer.de ❙ www.maguire.com ❙ www.plasticolor.de ❙ www.coperionktron.com


www.filmandsheet.com


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