| US 7,510,622 B2 | ||
| Method of making a shingle and shingle made thereby | ||
| Husnu M. Kalkanoglu, Swarthmore, Pa. (US); Robert L. Jenkins, Honey Brook, Pa. (US); Richard Krause, Collegeville, Pa. (US); Joseph Quaranta, Yardley, Pa. (US); and Kermit Stahl, North Wales, Pa. (US) | ||
| Assigned to CertainTeed Corporation, Valley Forge, Pa. (US) | ||
| Appl. No. 10/544,567 PCT Filed May 09, 2005, PCT No. PCT/US2005/016063 § 371(c)(1), (2), (4) Date Aug. 19, 2005, PCT Pub. No. WO2006/121433, PCT Pub. Date Nov. 16, 2006. |
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| Prior Publication US 2006/0260731 A1, Nov. 23, 2006 | ||
| Int. Cl. B29C 65/48 (2006.01); B32B 37/02 (2006.01); B32B 37/24 (2006.01); B32B 27/04 (2006.01) | ||
| U.S. Cl. 156—278 [156/279; 156/289] | 22 Claims |
| 1. A method of making a shingle in a manufacturing environment, in which the shingle has a butt region and a tab region with
the tab region having decorative granules applied thereto, the method comprising:
(a) providing a shingle-forming layer comprised of shingle reinforcement material impregnated with a bitumen material, the
layer having a butt region and a tab region, and including the step of delivering the layer along a longitudinal path;
(b) optionally, providing a layer of headlap granules on an upper surface of at least the butt region of the shingle-forming
layer;
(c) applying a plurality of marks to the shingle-forming layer, with the marks being provided at predetermined longitudinally
spaced-apart distances from each other and being applied independently of and synchronized to control the timing and placement
of features of subsequent shingle-completion steps; and
(d) sensing the locations of the marks and then actuating any of the following subsequent shingle-completion steps as a function
of the placement of the marks on the shingle-forming layer:
(i) controlling the humidity of the shingle manufacturing environment, for controlling expansion and contraction of at least
portions of the shingle being manufactured;
(ii) controlling the discharge of decorative granules from a granule applicator; and
(iii) controlling the relative positions of at least one granule applicator and the shingle-forming layer.
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