Static structures (e.g. – buildings) – Disparate sheet lamina between exposed surfaces of wall,... – Lapped multiplanar components
Patent
1996-05-30
2000-05-02
Friedman, Carl D.
Static structures (e.g., buildings)
Disparate sheet lamina between exposed surfaces of wall,...
Lapped multiplanar components
52105, 116205, 116207, 116216, 374106, 374162, 374141, E04D 1102, G01K 1300
Patent
active
060557869
ABSTRACT:
A roofing membrane heat seal indicator provides a positive, visually perceptible indication that a joint or seam has been raised to a sufficiently high temperature to achieve a proper seal. The heat seal indicator is applied adjacent and parallel to an edge of a roofing membrane which will be arranged on a roof to form the upper (exposed) surface of an overlapping membrane seam. As the adjacent surfaces of the overlapped membranes are heated, heat passes through the membrane to the heat seal indicator. The heat seal indicator may be a temperature sensitive ink pigmented with material that changes color upon being subjected to a temperature indicating that the membrane surface has been subjected to a sufficiently high temperature to achieve an appropriate seal. Alternatively, the indicator may be an adhered layer of a ground or flaked polymer, such as polyethylene, which is initially opaque but melts to become translucent, thereby indicating obtainment of a proper sealing temperature. This indicator may be combined with a white or colored strip which enhances the change in the polyethylene. Another alternative comprehends the combination of a group indicator and molten polyethylene to form a pigmented polyethylene which is cooled, flaked, and adhered to roofing membranes. Another alternative is an embossed ridge or raised letters which may be covered with a thin, temperature sensitive polyvinyl chloride film or coating.
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DeTorre Jeannemarie
Hubbard Michael J.
Watt Keith
Weinert Raymond J.
Friedman Carl D.
Murray David D.
OMNOVA Solutions Inc.
Rywalski Robert F.
Wilkens Kevin D.
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