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Best Practice for Future Lead–Acid Products Part 4: Pasting Technology

The addition of novel materials and additives to the positive and negative paste that enhance the specific energy, charge-acceptance and cyclic performance of the lead-acid cell (essential for the increased performance and service-life durability under increasingly onerous operating conditions) have a significant influence on the physical characteristics of the corresponding paste. Consequently, such pastes require a process and equipment that is flexible and capable of producing pasted plates with consistent characteristics, in particular: thickness, active material weight, paste-to-grid adhesion and over-paste distribution. The presentation (i) reviews the primary characteristics of the commonly used plate-pasting technologies, (ii) illustrates the importance of selecting the appropriate manufacturing process to handle both ‘traditional’ and ‘advanced’ paste formulations, and (iii) highlights the benefits of each of these plate pasting process(s). Collectively, this information is essential for the consistent production of positive and negative pasted plates of optimum quality for use in ‘high performance’ lead–acid cells/batteries.

Douglas Lambert

Vice President – Sales and Technology, WIRTZ Manufacturing Company

Doug Lambert joined Oldham Batteries (Denton, Manchester, UK) in February 1977 and has now over 40 years of experience in the lead–acid battery industry. He has worked for both battery manufacturers and battery manufacturing equipment suppliers, and has spent 12 years as a specialist lead–acid product and process consultant. Doug is currently Vice President – Sales and Technology for WIRTZ Manufacturing Company Inc., Port Huron, Michigan, USA.