Understanding Pasting Paper for Lead Acid Batteries

Lead acid batteries are commonly used in various applications, from automobiles to backup power systems. These batteries rely on a process called pasting, which involves applying a mixture of lead oxide and sulfuric acid onto the battery plates. One crucial component in the pasting process is pasting paper. Pasting paper is a specialized material that acts as a separator between the lead oxide paste and the battery plates. It serves multiple purposes, including:

• Absorbing excess sulfuric acid, helping to maintain the proper acid concentration in the battery.
• Facilitating the adhesion of the lead oxide paste to the plates, ensuring a consistent and reliable bond.

The quality of the pasting paper is crucial for the overall performance and lifespan of the lead acid battery. It needs to have specific properties, such as high porosity, good acid absorption capacity, and mechanical strength to withstand the pasting process. Manufacturers use various materials to produce pasting paper, including cellulose fibers and synthetic materials. The paper undergoes a series of treatments to enhance its properties, such as calendering and acid resistance coatings. During the pasting process, the battery plates are coated with the lead oxide paste on both sides. Pasting paper is placed between each plate to ensure the paste adheres evenly and to prevent any short circuits. The plates are then stacked together and inserted into the battery casing.