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November 1998

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Subject:
From:
Marianne Romansky <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 19 Nov 1998 10:03:47 -0500
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No optimism here.

 If the maximum Tg is 75 C, it is quite possible that the beginning of the
glass transition zone is in the 60 C range.  Softening and loss of
positional registration can therefore occur.

To verify whether this particular product is useable in your operating
environment, you may want to have the material analyzed to determine where
the onset of softening occurs, and to ask the supplier for their
manufacturing process tolerances on the thermoplastic.  Or run your product
through reliability testing.
____________________________________________________________
Marianne Romansky
Process Development Scientist
Celestica (Toronto) Inc.
Phone: (416) 448-6284
Email: [log in to unmask]

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