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Measuring the charge on papermaking fibres has been practiced for almost forty years, since Ed Strazdins introduced the idea that the charge on the fines in the filtrate from filtered stock was representative of the whole furnish. Since then, many different types of charge measurement techniques have been developed, and with this has come an increasing reliance on the use of charge control agents to improve the papermaking process.

There have been numerous case histories regarding the effectiveness of the charge control in many types of mill. The list of benefits is considerable:

• Reduced use of chemical additives such as wet -strength resins, size, dry-strength additives, etc
• Increased dewatering leading to improved production rates
• Reduced machine deposits
• Cleaner felts and longer felt life
• Longer doctor blade life
• Increased ash retention and fines retention
• Improved machine runnability
• Reduced dye usage
• More consistant product quality

Papertex consultants can help paper manufacturers achieve many of these benefits. We offer advice and support on:

• Product choice - looking at alternative chemistries and molecular weights

• Addition point and dosage

• Charge monitoring equipment and operation - including on-line systems and laboratory instruments.

• Understanding and interpretation of the measurement results

We are also able to supply retention aid and charge control agents. For data sheets, please see our downloads page.