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 S
Regards
Czeslaw Dabrowski
- Original Message -
From: "Bill Johns" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, June 02, 2003 5:52 PM
Subject: [RCSE] shrinkable polyesters
> (reposted as the original seems to have been lost in the ether)
>
> At 09:
> The typical mylar we use for bagging is not designed
for controlled shrinkability.
> Which begs the question of whether there exists a
product out there that could function as a heat
shrinkable, thick, mylar-like product. ... I can
envision, for instance, a mylar-like film of 0.030"
or 0.0
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