Coating Composition And Coated Paper And Coated Paperboard
Patent No. EP2768621 (titled "Coating Composition And Coated Paper And Coated Paperboard") was filed by Imerys Pigments on Oct 10, 2013. The application was issued on Dec 2, 2020.
Patent Summary
Coating compositions for paper and paperboard products that exhibit improved resistance to cracking and flaking when subjected to folding and bending operations. The compositions comprise a combination of kaolin and calcium carbonate, where the kaolin has a shape factor of 30 to less than 70 and the calcium carbonate has a d50 of at least 2.4 microns and a steepness factor of at least 30. The kaolin and calcium carbonate are present in a ratio of 20:80 to 80:20, and the kaolin has a mean particle size of 0.3 to 0.8 microns. The compositions can be used to coat paper and paperboard products, and can be applied using various coating methods, including on-machine and off-machine coating.
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Date
Description
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EP2768621
- Application Number
- EP13840112A
- Filing Date
- Oct 10, 2013
- Status
- Revoked
- Feb 4, 2025
- Publication Date
- Dec 2, 2020
- External Links
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