Reinforcement composite for a bituminous roofing membrane and method of making the composite
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United States of America Patent
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Issued Date -
Jul 7, 2005
app pub date -
Nov 17, 2004
filing date -
Nov 19, 2003
priority date (Note) -
Abandoned
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Abstract
A roofing membrane (10) is formed by impregnating and coating a composite material (11) with a bituminous material. The composite material (11) is formed with a first layer (12) made of a non-woven polyester mat. A second layer (13) is positioned adjacent to the first layer (12) and is formed as a non-woven fiberglass scrim. An optional third layer (14) is positioned adjacent to the second layer (13) and is formed of a non-woven polyester scrim. A fourth layer (15) is positioned adjacent to the third layer (14) and is made of a non-woven polyester mat. A fifth layer (16) is positioned adjacent to the fourth layer (15) and is also a non-woven polyester mat. The layers (12, 13, 14, 15, 16) may be attached by needle punching to form the composite material (11).
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