Re: [RCSE] shrinkable polyesters

[Don Stackhouse @ DJ Aerotech]

I heard years ago that the heat-shrinkable films were bi-directionally 
stretched during manufacturing. When you apply heat, they want to return to 
their original dimensions, which is where the massive amount of shrink 
comes from. Without this pre-stretching, they would not shrink as much.

Don Stackhouse @ DJ Aerotech
[EMAIL PROTECTED]
http://www.djaerotech.com
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