Asymmetric Two-Tab Shingle Pattern for Waste Reduction
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Solution Overview
Problem
Conventional roofing shingle systems lack the ability to efficiently utilize materials, resulting in scrap and waste, and do not offer a superior aesthetic appearance compared to multilayer architectural shingles.
Innovation Solution
A roofing system featuring shingles with interwoven two-tab patterns of varying widths, formed from a single rectangular shingle blank, minimizing waste and providing a more aesthetically pleasing dimensional appearance by alternating first and second shingle patterns in an interwoven configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If conventional three-tab or laminate shingles are used, then manufacturing is simple, but material waste occurs and aesthetic appearance is limited
Solution Approach 1:
The shingle is segmented into multiple tabs of varying widths (first tab with first width, second tab with second width where second width is greater than first width) created by cutting patterns in the shingle substrate. This segmentation allows different tab configurations from a single shingle body, enabling diverse patterns without additional material layers and reducing waste from traditional uniform-tab designs.
Solution Approach 2:
The shingle employs asymmetric tab design where tabs have non-uniform widths across the shingle face. Specifically, the second tab has a greater width than the first tab, creating an asymmetric pattern that provides visual dimension and aesthetic appeal while being formed from a single-layer substrate, thus avoiding the material waste associated with multilayer construction.
2Shape
If multilayer architectural shingles are used to achieve dimensional appearance, then aesthetic appeal improves, but material usage and complexity increase
Solution Approach 1:
The shingle creates dimensional appearance through asymmetric tab widths rather than multilayer construction. The second tab has a greater width than the first tab, producing visual depth and variation on a single-layer substrate. This asymmetric design achieves the aesthetic goals of architectural shingles without requiring multiple material layers, thereby reducing material waste.
Solution Approach 2:
Different regions of the shingle face have different tab widths to create local visual variation. The first tab has a first width while the second tab has a greater second width, providing localized dimensional appearance in specific areas of the shingle. This local quality approach achieves architectural aesthetic appeal without the material intensity of uniform multilayer construction.
3Ease of manufacture
If uniform tab widths are used in shingles, then manufacturing is straightforward, but aesthetic variety is limited
Solution Approach 1:
The shingle manufacturing process incorporates asymmetric tab width formation where the second tab is cut to a greater width than the first tab. This asymmetric cutting pattern is integrated into the standard manufacturing process, maintaining ease of production through conventional cutting methods while producing visually varied tab configurations that enhance aesthetic variety on the roof surface.
Data Source
AI summary
A roofing system including shingles with different shingle patterns. The roofing system may include a plurality of first shingles having a first two-tab shingle pattern and a plurality of second shingles having a second two-tab shingle pattern. The first shingles including a first tab having a first width and a second tab having a second width, wherein the first width and the second width are substantially equal. The second shingles including a third tab having a third width and a fourth tab having a fourth width, wherein the third width is substantially equal to the first width and the fourth width is about double the second width. The plurality of first shingles and the plurality of second shingles can be formed from a rectangular shingle blank in an interwoven pattern with substantially no scrap or waste material.