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Methods For Producing Air-Cured Fiber Cement Products - EP3523263
The patent EP3523263 was granted to Etex Services on Oct 5, 2022. The application was originally filed on Oct 5, 2017 under application number EP17780716A. The patent is currently recorded with a legal status of "Granted And Under Opposition".
EP3523263
- Application Number
- EP17780716A
- Filing Date
- Oct 5, 2017
- Status
- Granted And Under Opposition
- Sep 2, 2022
- Publication Date
- Oct 5, 2022
- External Links
- Slate, Register, Google Patents
Patent Summary
Method for producing air-cured fiber cement products like roofing tiles using waste fiber cement powder. The key steps involve mixing cured fiber cement powder from recycled products into fresh fiber cement slurry in an optimized range of 5-40% by weight on a dry basis. The green fiber cement sheets are pressed and then air-cured to make the final products. This allows using fiber cement waste instead of virgin materials without negatively impacting water absorption or density.
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Patent Oppositions
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Patent Citations (13) New
Patent citations refer to prior patents cited during different phases such as opposition or international search.
Dossier Documents
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