METHOD TO REDUCE METAL PICK-OFF FROM EDGES OF METALLIZED BIAXIALLY ORIENTED FILMS
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United States of America Patent
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Issued Date -
Jan 3, 2013
app pub date -
Jun 29, 2012
filing date -
Jun 30, 2011
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Abandoned
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Abstract
Methods and equipment to reduce or eliminate metal edge-pick-off defects in freshly metallized polymeric film rolls are disclosed. The method may include the formation of a “raised edge” such that the ingress of air and/or oxygen gas into the ends of the wound freshly-metallized roll is blocked or impeded, thus reducing oxidation of the metal. This method significantly reduces the amount of metal pick-off defects and resulting quality and productivity losses due to scrapping of such defective metallized film.
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