Production of polyisocyanurate foam panels
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United States of America Patent
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Jun 5, 2018
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app pub date -
Jun 24, 2016
filing date -
May 25, 2012
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Abstract
The present invention discloses the production of panels by a discontinuous process. The panels are produced by injecting a polyisocyanurate foam forming composition into the mold cavity at reduced pressure. The combination of certain polyisocyanurate foam forming formulation and the reduced pressure in the mold cavity allows production of and resulting sandwich panels in a discontinuous process where the produced panels are characterized by improved fire resistance.
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