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Innovative Mold for Cleanroom Production of Insulin Pen Housings Showcased at Fakuma

German medical molding specialist Braunform combined two technologies developed in-house to reduce cycle times and optimize quality.

Norbert Sparrow

September 16, 2024

2 Min Read
injection mold
Image courtesy of Braunform

Medical molding specialist Braunform GmbH will showcase at Fakuma next month how a combination of two technologies developed in-house enabled a mold design and process that optimized the production of insulin pen housings.

Braunform initially designed an eight-cavity pilot mold for testing purposes, which ultimately led to a 32-cavity production mold. Synchronized mechanical movements in combination with a horizontal part made it possible to perform direct injection via a valve gate. 

Blend of two core competencies

The technology is based on two core competencies, said Braunform — Lift&Strip² and Med Mold.

In the company’s proprietary Lift&Strip² technology, movement is initiated by the machine’s ejector, which lifts and strips the part simultaneously. A movable forced guidance system, the stripping mechanism moves synchronously with the mold opening. Previously, when the mold opened, stripping was actuated by a separate drive. This drive is no longer required and the two processes have been combined into one. This innovation reduces cycle times and increases efficiency, said Braunform.

The advantages of Lift&Strip² 

  • Gating options are optimized by enabling a horizontal lengthwise positioning of the parts. Side-gate applications can be avoided and conventional valve gate applications can be implemented.

  • Quality is optimized because the horizontal positioning reduces flash formation compared with slider molds. The vertical arrangement also improves gate quality.

  • Synchronous lifting of the load-bearing core and stripping of the molded part saves time, mold costs, and installation space.

  • Lateral demolding eliminates additional ejectors and markings on the part.

  • Guidance design enables a range of stripping speeds.

Related:Best Practices for Medical Device Material Selection

Braunform developed the Med Mold concept to ensure the safe use of injection molds in cleanrooms, based on a quarter century of experience in cleanroom production. Specifically developed for medical and pharmaceutical applications, Med Mold has been part of the company’s standard operations since 2010.

"With more than 25 years of experience in the field of medical technology and production in cleanrooms, we are proud to further support our medical technology customers in the safe and effective production of their plastic articles," said Joachim Stiller, general manager of Braunform GmbH.

Braunform will exhibit at booth 5207 in hall A5 at Fakuma. The international trade show for plastics processing returns to Friedrichshafen, Germany, on Oct. 15 to 19, 2024.

About the Author

Norbert Sparrow

Editor in chief of PlasticsToday since 2015, Norbert Sparrow has more than 30 years of editorial experience in business-to-business media. He studied journalism at the Centre Universitaire d'Etudes du Journalisme in Strasbourg, France, where he earned a master's degree.

www.linkedin.com/in/norbertsparrow

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