Paper making felt refers to the fabric felt used for paper forming and transportation in the paper industry. According to the position on the paper machine, it can be divided into wet blanket, upper blanket, and dry blanket.
Paper making felt refers to the fabric felt used for paper forming and transportation in the paper industry. According to the position on the paper machine, it can be divided into wet blanket, upper blanket, and dry blanket.
According to the position on the paper machine, it can be divided into wet blanket, upper blanket, and dry blanket. The wet blanket is driven by water on the paper machine to press the paper blank for dehydration and smooth paper surface. Wet blanket has good water filtration and elasticity, high strength, low shrinkage rate, wear resistance, and can resist bacteria and acid and alkali corrosion. The upper part of the blanket is located above the wet blanket, with a small portion in contact with the dryer, which serves as a guide for paper, top leveling, and drying. It has the properties of flatness, rigidity, good elasticity, wear resistance, and high temperature resistance. The dry blanket wrapped dryer operates in wet, hot, and dry conditions, providing ironing and drying effects on paper. It has solid, elastic, wear-resistant, and high-temperature resistant properties. Dry blankets can also be replaced with canvas or breathable fabrics woven from polyester filament.
The processing method of papermaking blankets is to first make a thick and thin base fabric with synthetic fibers, and then lay a mixed fiber network of synthetic fibers and a small amount of wool on it, which is then punched, chemically treated, resin treated, and heat set.
Paper making blankets are divided into two types: woven and knitted. Machine woven paper-making blankets are made from a blend of wool and nylon short fibers, with a blending ratio of approximately 75:25, and are processed through weaving, shrinking, fuzzing, drying, and shaping. The manufacturing method of needle punched paper blankets is to first comb 50% wool and 50% nylon short fibers or 100% nylon short fibers into a fiber web, overlap it in multiple layers, and then use barbed steel needles to pierce the fiber web onto the pre woven circular bottom fabric to achieve a certain degree of tightness and flatness. The methods of needling include single-sided needling and double-sided needling. Needle punched blankets have the characteristics of good water filtration, wear resistance, high strength, and long service life.