Shingles with multiple blend drops and method of depositing granules onto a moving substrate
US6790307B2 · kind B2 · utility
23Cited by
15References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 22, 2002 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Jun 6, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2438
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of making shingles includes providing a moving asphalt coated sheet having at least an overlay lane and an underlay lane. Blend drops of at least two color blends are discharged onto each lane, wherein at least one of the blend drops discharged onto the overlay lane has a different color blend from the color blends of all the blend drops discharged onto the underlay lane. Background granules are then discharged onto the asphalt coated sheet to form a granule coated sheet, and the excess granules are removed from the granule coated sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.