Pigment-coated board having improved PE adhesion
US12018436B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 2018 |
| Grant date | Jun 25, 2024 |
| Priority date | — |
| Expiry date | Dec 31, 2040 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H27/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is provided a coated paperboard comprising a base board having a top side provided with a pigment coating, which pigment coating comprises a pigment mixture, a binder and a rheology modifier, wherein: the pigment mixture comprises, by dry weight, 0-17% of clay, 60-90% of a first CaCO3 pigment and 0-30% of a second CaCO3 pigment, provided that the amount of clay and second CaCO3 pigment combined is at least 10%; the d50 of the first CaCO3 pigment is 0.60-0.80μιτι and the d98 of the first CaCO3 pigment is at least 2.8μιτι; the d50 of the second CaCO3 pigment is 0.63±0.10μιτι and the d75 of the second CaCO3 pigment is less than 1.2μιτι; the binder comprises a styrene-butadiene copolymer or a styrene-acrylate copolymer; and the dry weight ratio of pigment to binder in the pigment coating is from 100:16 to 100:20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.