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Medical device company B. Braun (Melsungen, Germany) and Priamus (Schaffhausen, Switzerland), a supplier of quality control systems for injection molding, have collaboratively developed a technology that ensures reliable and repeatable part molding.

PlasticsToday Staff

April 16, 2014

1 Min Read
B. Braun, Priamus collaborate on mold process harmonization

Small, highly sensitive temperature sensors are positioned at the end of the flow path in each mold cavity to capture information about the melt. The sensors ensure simultaneous filling of cavities by identifying short shots in real time. The measurement data, which is constantly monitored, also enables automatic removal of defective parts.

Global manufacturing requires vigilance to ensure that molding parameters are consistently met. Molds manufactured by B. Braun in Germany are validated on site, and the documentation serves as a reference for its global production facilities, explains Karl-Heinz Koch, who leads the B. Braun Technology Center. Difficulties arise when components are produced with 16- or 24-cavity molds, for example, and the cavities are not filled uniformly. The short shots can result in high repair costs and lost productivity, says Koch.

Using pressure sensors in combination with the aforementioned temperature sensors also allows deviations in viscosity to be monitored, ensuring that part quality is maintained regardless of where it is produced, according to the two companies.

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