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Processes for the production of paper in a machine for the production of paper and striation means or liner cardboard in a machine for the production of paper
Processes for the production of paper in a machine for the production of paper and striation means or liner cardboard in a machine for the production of paper
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机译:在用于造纸的机器中的造纸方法以及在用于造纸的机器中的条纹装置或衬板纸板
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摘要
Paper strengthened by starch, typically in amounts of 3 to 15% dry weight, is made by flocculating a cellulosic suspension using a polymeric retention aid which can be dissolved cationic starch but is preferably a synthetic polymer having IV above 4dl/g, shearing the resultant flocculated suspension and reflocculating it by adding bentonite or other microparticulate anionic material, draining the flocculated or reflocculated suspension and drying the resultant wet sheet, wherein insoluble particles of starch are added to the suspension as a slurry of substantially freely dispersed particles in part or all of the aqueous solution of the polymeric retention aid.
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