Novel wall paper's crude paper and its mfg. method
A technology of wallpaper and base paper, which is applied in the direction of papermaking, paper machine, paper machine wet end, etc. It can solve the problems of large foreign exchange consumption, holes and pores, and low thickness, and achieve the effect of smooth papermaking, low vertical and horizontal expansion ratio, and soft hue
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Embodiment 1
[0025] The coniferous fully bleached academic pulp, broadleaf fully bleached chemical wood pulp, cotton pulp, and broadleaf BCTMP pulp that are beaten to appropriate beating degrees are prepared into 9000 kg of mixed pulp according to the above weight ratio 10:70:10:10; the beating degree (Beating degree): softwood fully bleached chemical wood pulp 20~30°SR; broadleaf fully bleached chemical wood pulp 20~30°SR; cotton pulp 40~50°SR; broadleaf BCTMP 40~50°SR. Add 800kg of calcium carbonate filler and appropriate AKD, PAE and PAM additives (about 2kg in total) to make paper stock, and the paper stock is dehydrated by fourdrinier wire, pressed, dried and calendered, coiled and finished to obtain 10,000 kg of wallpaper base paper. The online concentration is 0.6%, the pH of the online slurry is 7.5; the calendering conditions: pressure and pressure are applied. The pulp-to-net speed ratio is about 0.99; the basis weight of the prepared wallpaper base paper is 80g / m 3 ; Moisture i...
Embodiment 2
[0026] Embodiment 2: the fully bleached chemical wood pulp of coniferous leaves, the fully bleached chemical wood pulp of broadleaves, and the cotton pulp are prepared into 9000kg of mixed pulp according to the above weight ratio 20: 60: 20; degree): softwood fully bleached chemical wood pulp 20~30°SR; broadleaf fully bleached chemical wood pulp 20~30°SR; cotton pulp 40~50°SR. Add 800kg of calcium carbonate filler and appropriate AKD, PAE and PAM additives (the total amount is about 2kg) to make paper stock. The paper material is dehydrated by fourdrinier wire, pressed, dried and calendered, coiled and finished to obtain 10,000 kg of wallpaper base paper. The online concentration is 0.5-0.8%, the pH of the online slurry is 7.5; the calendering conditions: pressure is applied. The pulp-to-net speed ratio is about 0.99; the basis weight of the prepared wallpaper base paper is 85g / m 3 ; Moisture is 5.2%; Whiteness (ISO) 75%; Opacity 90-96%; Dry tensile strength 4.5KN / m; Wet ten...
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