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Complete system for the pelletizing of PVC formulations.
Complete system for the pelletizing of PVC formulations.
Photo: 123

According to KraussMaffei Berstorff, there is significant growth in incoming orders for pelletizing systems both in the polyvinyl chloride (PVC) and polyolefins (PO) area.

For PVC pelletizing, it said the revised machine series with 32 L/D processing length, which was launched on the market for the first time for K 2016, is experiencing high demand.

"We have systematically adapted the pelletizing machines to current market requirements with respect to output," explained Eric Sanson, Product Manager for Profiles and Pelletizing at KraussMaffei Berstorff.

The 32D twin-screw extruders offer up to 20% higher output for hard and soft PVC. Another benefit of the optimized screw concept is the processing of a large range – also high-filled – or recycling materials. A clever pelletizing head concept with a high level of wear resistance also enables the processing of very sensitive and highly corrosive materials such as chlorinated PVC (C-PVC).

Tunisie Cables, one of the largest manufacturers of cables in Africa, selected KraussMaffei Berstorff's equipment due to its high flexibility

"We expect maximum flexibility in the production process along the entire value chain," stressed Fakhreddine Bousnina, Purchasing Manager of Tunisie Cables. "We granulate our material using flexible PVC formulations for the different applications in cable manufacturing, such as the insulating layers, sheathing and also filling material."

The integrated plant, featuring the KMD 133-32/G-W as its centerpiece, will go into operation at the Grombalia production site at the end of the year.

Fortlev, a Brazilian producer of plastic tank and cistern systems, invests again in pelletizing systems for middle density polyethylene (MDPE). With the current order for two KME 150-36 B, the Brazilian company will shortly be manufacturing pellets on a total of seven KraussMaffei Berstorff 36D single-screw extruders, then micronizes them and uses them in the roto-molding process for the production of water tanks.

The output of the KME 150-36 B is 1,800-2000kg/h and the output of the KMD 125-36 B is 1,300-1,500kg/h. The order also includes a complete line for PVC pelletizing. Formulations are pelletized for PVC projects on the machine, like on the two existing systems.

The small twin-screw extruder KMD 35-26/L, the heart of a lab plant, completes the product range of KraussMaffei Berstorff in pelletizing. It is small and compact but comes with a powerful transmission and a separate C6 control.

Formulations can be mixed and optimized in small quantities, before large quantities of material are used in a production machine, according to the machinery supplier. In production facilities lab extruders are also often used for the quality control of raw materials and formulations.

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