Method and apparatus for coating a moving substrate
US10195640B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 29, 2016 |
| Grant date | Feb 5, 2019 |
| Priority date | — |
| Expiry date | Feb 14, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D2001/005
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for applying coating material to a moving substrate such as a glass mat web in shingle manufacturing includes conveying the web through a narrow channel and ejecting at least one coating material onto at least one surface of the web as it is conveyed through the channel. In a preferred embodiment, multiple coating materials may be applied to one surface of the web and multiple coating materials may be applied to the other surface of the web. The coating materials may be molten asphalt or other coating materials. The pressure of the coating material is controlled as a function of the line speed of the moving substrate to ensure consistently thick coatings at various speeds, including relatively high speeds, of the web. An apparatus in the form of a slot die is disclosed for carrying out the method of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.