Polyurethane soft foam rubber, polyurethane is a common polymer material in life, widely used in the production of various "sponge" products. As well as suspension and anti-friction elastic materials, such as soles, tractor tank track substrates.
There are many types of sponge used in industrial production, such as foamed cotton, shaped cotton, rubber cotton, and memory cotton.
This material is made of polyurethane material, mixed with various additives such as foaming agent, and pressed into a simple mold to press out different shapes of sponge. It is suitable for swivel chair cushions, back cotton, and also has a small amount of handrails. Made of cotton. Adopting the material density of 55#~60#, its elasticity is more in line with relevant national standards. The elastic hardness of the sponge can be adjusted and adjusted according to different parts of the product. Generally, the cotton has a higher hardness and a higher density, followed by a cotton back, and the pillow is softer.
This material is molded from polyether foam, like foamed bread. It can be foamed by mechanical equipment or artificially surrounded by wood. The foamed cotton is like a square loaf, and the slicer is used for the slicing process.
The thickness can be cut according to different requirements, and the foamed cotton can also adjust the softness. The seat cotton is generally 25~28kg/m3, and the other is 20~22kg/m3. Although the softness and density of sponges are directly related, they are also related to different additive formulations. Therefore, the industry is divided into high elasticity, gray super, black ash super and soft cotton. When designing and using the product, it should be rationally and scientifically matched according to different shapes and structures. Generally, it is divided into upper, middle and low parts with different elasticity and density of sponge. There is a kind of fireproof cotton material (flame-retardant cotton) in the sponge. In fact, before the sponge is foamed, the fire retardant is added to the material formula. For example, chlorine and bromine can make the sponge produce fire smoke when it is on fire. Combustion effect.
One kind of sponge, which is made of natural latex material, which has rubber characteristics, excellent elasticity, good resilience and no deformation, but it is expensive and 3~4 higher than foamed cotton. Times.
Recycled sponge, the internationally accepted English name BONDED FOAM, is a new type of product that is a universal sponge treatment method. Recycled sponges are recycled from the industrial waste of polyurethane products. Its use value is no less than that of sponge. It is made by crushing industrial sponge scraps, stirring glue steam, high temperature sterilization and sterilization to taste compression molding. The production cost is greatly reduced from the use of production cost. It has good elasticity, good resistance, no deformation, no odor, and can be made into various density products according to customer needs. The high-density and high-elastic recycled sponge reaches a density of 60 kg/m3. Above, it has the characteristics of high efficiency flame retardant, good tensile force, high elasticity, no deformation, and then sterilized by high pressure steam, which is environmentally friendly and economical. Can be widely used in the production of sofas, mattresses, boss chairs, sports equipment, such as sponge gym mats, sponge fitness mats, sponge wrestling mats, sponge car seat cushions and other products, such products have been widely accepted by countries around the world.
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