Method of manufacturing a perforated roofing material

Details Method of manufacturing a perforated roofing material Method of manufacturing a perforated roofing material

1989-08-17

1990-07-10

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156253, 156279, B32B 3114

Patent

active

049405012

ABSTRACT:
A perforated web-like bituminous roofing material comprising a perforated, bituminized carrier, at the side facing, in the condition of use, the roof area to be coated, is provided with a metal foil leaving clear the perforations in the bituminized carrier. The roofing material can be manufactured by finishing one side of a perforated bituminized carrier with fine sprinkling material and coating the other side with an imperforate metal foil, and subsequently removing the metal foil at the perforations.

REFERENCES:
patent: 2003494 (1935-06-01), Reynolds
patent: 2021716 (1935-11-01), Douthett
patent: 2353680 (1944-07-01), MacNutt
patent: 3331728 (1967-07-01), Lane
patent: 4283243 (1981-08-01), Andreades et al.
patent: 4287248 (1981-09-01), Gessner et al.

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