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Method for manufacturing on a film substrate at a temperature above its glass transition

  • US 8,871,298 B2
  • Filed: 02/07/2007
  • Issued: 10/28/2014
  • Est. Priority Date: 02/08/2006
  • Status: Expired due to Fees
First Claim
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1. A method for elevated temperature processing of a film, comprising:

  • providing a film comprising a polymeric substrate having a glass transition temperature under about 200°

    C., and further comprising at least one layer of metal oxide and at least one layer of coated polymer;

    clamping the film so as to place the clamped film under tension in at least two orthogonal directions; and

    holding the clamped film flat in a zero strain condition while subjecting the clamped film to elevated temperature processing comprising heating the clamped film in the zero strain condition above the glass transition temperature of the polymeric substrate, wherein the clamped film does not show any visible curl or distortion when unclamped after said elevated temperature processing.

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