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where expertise comes together
- since 1996 -

Matec Instrument Companies, Inc.
Ultrasonic test instrumentation and systems for quality control inspection and production testing applications and scientific research.
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Technical Discussions
Ricardo
Ricardo
05:55 Sep-14-2004
Flex-Packaging delayed Adhesion failure

A laminated structure of PET/PE presented delayed adhesion failure. Bonds of +500 gms after manufacture droped to 180 gms 2 weeks later. Problem appears sporadically and mostly in the winter months. I suspect the calcium stearate added by the resin manufacturer to neutralize residual catalyst in the lLLDPE. Any experiences in this area?


 
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