The collaboration stemmed from a mutual recognition of overmolding's importance in manufacturing while delivering improved product performance and aesthetics in consumer goods when using
The companies researched how specific processing variables impact the adhesion strength of overmolded samples produced through 2K injection molding. The study's findings are believed to be applicable across various TPE and substrate combinations. This is of particular interest when mechanical interlocks cannot be used, and material changes are not feasible but improvements in adhesion strengths are desired.
By optimizing key TPE processing variables like mold temperature, pack and hold time, and TPE barrel temperature, the research team achieved a notable 124% improvement in adhesion strength compared to values obtained using non-ideal processing conditions. An additional improvement in adhesion strength was observed when Lubrizol's ESTANE ECO 12T80E and 16T85 TPU grades were used. These grades displayed the highest peel strength values (> 310 N) of all TPEs evaluated in this preliminary study.
'This was a unique opportunity for two leading material companies to leverage sustainable multi-material solutions that enable customer innovations and expand the limits of consumer product experiences,' said
'This effort has advanced our understanding of overmolding and TPEs, providing valuable guidance for engineers and manufacturers looking to improve overmolded product strength,' said
For a detailed view of the study, access the white paper [link].
NPE2024 attendees are invited to visit Lubrizol's booth S35017,
About
About
Contact:
Jacob Teetzmann
Tel: 1-423-494-3673
Email: jteetzmann@tombras.com
Lubrizol
Tel: 1-440-943-4300
Email: laura.hall@lubrizol.com
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