Traditional papermaking processes primarily use a mixture of plant and animal fibers, while modern processes optimize raw material ratios and pulping procedures, achieving higher waste paper utilization rates and performance indicators.
According to a 2024 invention patent (CN102154880B):
Raw material ratio: 94%-97% wool waste paper, 0.5%-1.5% alkyl ketone dimer, 2%-5% starch.
The pulping process employs a three-stage disintegration process, achieving a fiber retention rate ≥85%.
The additives are added in the following order: diluted starch → pH adjuster → alkyl ketone dimer, controlling the pulp pH value within the range of 6.8-7.2.
The forming process utilizes a four-wire, twelve-roll paper machine, controlling longitudinal basis weight fluctuations within ±1.5 g/m².
