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11-27-2015

Coperion Expands Portfolio

Coperion GmbH, Stuttgart, is expanding its offering in the area of long fiber technology for the European and Asian regions. In cooperation with ProTec Polymer Processing GmbH in Bensheim, Coperion now offers complete installations for the production of long fiber-reinforced thermoplastics (LFTs), meeting the growing need for LFT pellets.

Roving pre-warming with spreading of the individual fibers enables the best individual fiber wetting (figure: Coperion)

Roving pre-warming with spreading of the individual fibers enables the best individual fiber wetting (figure: Coperion)

Components made of long fiber-reinforced plastics possess outstanding rigidity with low weight and increased impact resistance. Compared to short fiber-reinforced thermoplastics they also demonstrate improved mechanical and thermic material properties. With this improved quality, long fiber-reinforced thermoplastics are well suited for higher stress und demanding areas of use.

Coperion uses the ZSK Mc18 twin screw extruder or the STS Mc11. The ZSK Mc18 series is used in particular for products with a high torque demand, such as engineering plastics or high-temperature applications; the STS Mc11 series is used for standard plastics such as polypropylene and polyethylene. Coperion K-Tron equipment is used for feeding, as it is particularly suited for raw materials in powder form, such as polymer powder, additive powder, or filler materials such as talc and chalk. Following impregnation, the fiber-polymer strands are cooled in a water bath and subsequently pelletized to rod shaped pellets.

The collaboration between Coperion and ProTec Polymer Processing offers numerous advantages. The complete line is offered with optimized components to enable the highest quality LFT pellet manufacturing. Among these, along with the ZSK Mc18 or STS Mc11 twin screw extruder series, is a specially designed impregnation die head, developed by ProTec, which cannot clog with filler material. Moreover, roving unwinding with rotating coils, as well as roving pre-warming with individual fiber spreading, enable the best possible fiber impregnation. The complete installation offers one further advantage: different polymers in combination with special additives can be used in the same production line. Support and development of customer-specific formulations can take place in ProTec’s Testing Center in Bensheim. This production of product samples allows to validate components manufactured with LFT pellets. Using twin screw technology and the special impregnation die head, it is also possible to use additional fillers and even regrind material. As a result, the customer receives a fully automated production line, set and optimized to the customer’s formulation.

Company profile

Coperion GmbH

Theodorstr. 10
DE 70469 Stuttgart
Tel.: 0711 897-2515
Fax: 0711 897-3981

ProTec Polymer Processing GmbH Headquarters

Stubenwald-Allee 9
DE 64625 Bensheim
Tel.: 06251 77061-0
Fax: 06251 77061-500

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