Penetration resistant laminated glass manufactured with interlayer film layers having reduced adhesion and low plasticizer content
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United States of America Patent
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Nov 2, 2021
Grant Date -
Nov 24, 2016
app pub date -
Apr 7, 2016
filing date -
May 22, 2015
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Abstract
Penetration resistant laminated glass is obtained by laminating at least one film A containing a polyvinyl acetal PA and optionally at least one plasticiser WA and at least one film B containing a polyvinyl acetal PB and at least one plasticiser WB between two glass sheets, where prior to lamination, the amount of plasticiser WA in film A is less than 16% by weight, the amount of plasticiser WB in film B is at least 16% by weight, and film A comprises at least 7 ppm alkali ions.
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