DSM Engineering Materials

BAUSER MARKS 2 YEARS OF STANYL® PA46 ANNEALING TECHNOLOGY

Bauser, an injection molding company specialized in precision parts located in Wehingen, Germany, has successfully introduced a production process for automotive gears, using DSM Engineering Plastics Stanyl PA46 annealing technology. The company was the first plastic gear supplier in Germany to jointly commercially introduce the technology, almost 2 years ago.

Annealing is a high temperature after-treatment of an injection molded part, during which significant morphological changes occur. Stanyl is annealed when heat treated above its glass transition temperature [Tg80°C], but below its melting temperature [Tm295°C], preferably at temperatures around 220°C for 2 - 4 hours.

Hans Wennekes, Business Development Manager Stanyl, explains: “After annealing, the parts generally have up to 35% higher mechanical properties above Tg, as well as increased wear and creep performance. A positive side effect is the reduction of moisture uptake by 35%.”

The effects obtained through annealing are irreversible. At the indicated annealing temperatures (>210°C), a nitrogen atmosphere is recommended to avoid any thermal oxidation of the material. The process is especially applied when aspects like performance, durability and safety has to be boosted.

According to Bauser’s CEO, Michael Bauser, the process provides a cost-effective solution, especially for niche applications: “This secondary operation increases the performance of actuators significantly and gives the developer the freedom to use standard technology without applying exotic materials or totally new designs.”

Key applications for annealed Stanyl gears are those with high demands on load or safety performance and where polyacetal cannot be used. These include wiper systems, sliding doors, roof systems using worm gear actuators. In non-automotive, the process can be used for general applications such as sliding, folding and roll-up door openers.

Bauser is a main partner in a new extensive Gear Research Program (Project Lead DSM EP) with a focus on innovative steel replacement solutions applied in future under the hood applications, details will be enclosed in the upcoming years.

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DSM Engineering Plastics

DSM Engineering Plastics is one of the world's leading suppliers of engineering thermoplastics, with a permanent focus on innovation. Most recently, DSM Engineering Plastics introduced the first new polymer of the 21st century: Stanyl® ForTii™. DSM Engineering Plastics delivers Living Solutions: materials that support a durable vision of people, planet and profit for customers who design or produce electrical applications, electronic equipment, cars, barrier packaging films as well as many mechanical and extrusion applications. DSM Engineering Plastics offers a broad portfolio of high performance materials, including Akulon® 6 and 66 polyamides, Arnitel® TPC, Arnite® PBT and PET polyesters, Xantar® polycarbonate, Yparex® extrudable adhesive resins and Stanyl® global market leader in high heat polyamides. DSM Engineering Plastics is part of the performance materials cluster of DSM, with sales in 2008 of EUR 761 million and 1500 employees worldwide.

More on: www.dsmep.com.

DSM – the Life Sciences and Materials Sciences Company

Royal DSM N.V. creates innovative products and services in Life Sciences and Materials Sciences that contribute to the quality of life. DSM’s products and services are used globally in a wide range of markets and applications, supporting a healthier, more sustainable and more enjoyable way of life. End markets include human and animal nutrition and health, personal care, pharmaceuticals, automotive, coatings and paint, electrical and electronics, life protection and housing. DSM has annual net sales of EUR 9.3 billion and employs some 23,500 people worldwide. The company is headquartered in the Netherlands, with locations on five continents. DSM is listed on Euronext Amsterdam. More information: www.dsm.com.

Akulon®, Arnite®, Arnitel®, Stanyl®, Stanyl® ForTii™, Xantar® and Yparex® are registered trademarks of Royal DSM N.V.

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Sandra Coolen
DSM Engineering Materials

+31 46 477 3394

sandra.coolen@​dsm.com

Nancy van Heesewijk
EMG

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