| 摘要 |
<p>A shingle (20) is provided having a headlap section (32) and a buttlap section (34) with at least one portion of the buttlap section having a relatively uniform color and/or value and an adjacent portion of the buttlap section having a value gradation from light to dark. A plurality of horizontal striations (52, 54, 56) with transition stripes (152, 154) disposed between adjacent horizontal striations may be used to establish the desired value gradation. An illusion of depth or shingle thickness is created on the portion of the buttlap section having the value gradation. The buttlap section defines in part the exposed weather surface (42) of the associated shingle. The relatively uniform color and/or value portions may be formed on tabs or dragon teeth (36) and the value gradation formed on a backer sheet (50) disposed beneath the tabs. Openings (38) between tabs expose the enhanced value gradation to view.</p> |
