Method for manufacturing paper with constant filler content

• Main Authors: K.B. ERIKSSON, O NORDIN
• Format: Patent
• Language: Chinese; English
• Published: 14.04.2004
• Edition: 7
• Subjects: ACCESSORIES FOR PAPER-MAKING MACHINES; CALENDERS; IMPREGNATING OR COATING OF PAPER; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; TEXTILES; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G

本发明涉及一种控制含填料纸的生产的方法。在该造纸过程中把填料和保持剂供给该造纸系统。测量纸中填料数量以及白水或浆料中填料浓度或总浓度。填料的供应数量使得用填料把该系统缓冲在一通过测量过程确定的一般预定的浓度水平(控制值)上。只根据即时测量的纸中填料数量连续加入保持剂，从而当测得的当前填料数量低于预定值时增加保持剂加入量，而当测得的当前填料数量高于预定值时减小保持剂的加入量，并且，至少长远看来，只根据在白水或浆料中测得的填料浓度大小连续加入填料，从而当该测量值低于控制值时，增加填料的加入量，而当测量值高于控制值时，减小填料加入量。 A method of controlling the production of filler-containing paper. Filler and retention agent are delivered to a paper manufacturing system in a process of paper manufacture. The amount of filler in the paper is measured, as is also the filler concentration or the total concentration in the white water or the stock. Filler is delivered such that the system will be buffered with filler to a generally pre-determined concentration level. The continual addition of retention agent is based exclusively on the amount of filler in the paper measured at that moment in time. When the measured amount of filler present is lower than a desired level, the addition is increased. When the measured amount of filler present is higher than a desired level, the addition is reduced. The continual addition of filler is based, exclusively on the concentration level of filler measured in the white water or the stock.