A pre-steaming method for super high thickness board paper
By using a pre-steaming method for ultra-thickness paperboard, combined with high-temperature pressurized pre-steaming, multi-stage refining, and three-stage bleaching processes, the problems of high energy consumption and severe fiber damage in the traditional BCTMP process have been solved, enabling the production of paperboard with high bulk and low cost, and improving the intelligence of the production line and market responsiveness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGXI SUN PAPER BOARD CO LTD
- Filing Date
- 2026-04-13
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional BCTMP processes suffer from high energy consumption, insufficient bulk, and severe fiber damage, making it difficult to meet the demand for high bulk paper grades, and production costs remain high.
The pre-steaming method for ultra-thickness paperboard includes low-temperature atmospheric pressure pre-impregnation and high-temperature pressurized pre-steaming, combined with multi-stage pulping and three-stage bleaching processes. By optimizing process parameters through a mapping relationship model, wood chip softening and fiber separation are achieved, reducing energy consumption and improving fiber quality.
It significantly reduced grinding energy consumption by 20%, increased bulk by 15%, reduced fiber bundle content to below 0.1%, improved the physical strength and printability of paperboard, achieved intensive control of production costs and environmental protection requirements, and enhanced the intelligence level of the production line.
Smart Images
Figure CN122406573A_ABST