How can i bond castable polyurethane with already casted polyurathene in mold?

16 June 2021 1 8K Report

Hi, I am trying to bond some solid parts of TPU with castable polyurethane with in a mold during casting. But when i pour liquid polyurathene in mold and cure it , it don't bond with TPU parts. Any recommended procedure please

Alex Lin

When PU is still sticky, it can be bonding with others.

Primer is recommended for solid-liquid bonding, and hot melt glue is recommended for solid-solid bonding.

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