Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture
Patent
1991-06-24
1993-09-07
Robinson, Ellis P.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including aperture
428131, 428122, 428127, 428 357, 428910, 428480, 428188, 428178, 428463, 52410, 52417, 52478, 52461, 52462, F04D 514, F04D 506, F04G 2114, B32B 324
Patent
active
052427366
ABSTRACT:
A seamless tube useful in making a roofing batten is extruded from a polymeric material consisting essentially of a major amount of poly(ethylene terephthalate) and a minor amount of at least one polyolefin, flattened in a vacuum sizer so as to define two plies, and milled and drawn so as to orient the tube longitudinally. As milled and drawn, the tube is oriented so as to have a tensile strength of at least about 25,000 psi in a longitudinal direction. The plies are punched so as to have holes therethrough at spaced intervals along the tube. When used to make a roofing batten to coact with conventional fasteners, such as roofing screws, the tube exhibits superior characteristics of split resistance and pull-through resistance.
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Rathgeber Juergen O.
Vadhar Parimal M.
Van Erden Donald L.
Wojcik John P.
Illinois Tool Works Inc.
Robinson Ellis P.
Watkins III William P.
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