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Sponge can be divided into high rebound sponge and slow rebound sponge, both of these sheep have high density and low density, of course, the degree of softness and hardness is not the same. It is a porous material with good water absorption and can be used to clean things. The sponges that people commonly use are made from lignocellulose fibers or foamed plastic polymers.natural dish sponge High resilience sponges, on the other hand, are produced and processed using a combination of polyurethane (PU)-high, medium, and low density high resilience foams, the main component of which is polyurethane. High rebound sponge bubble hole diameter size mixed distribution, different thickness of the skeleton, there is a large open rate. When pressurized, it will produce different supportive rebound forces in different deformation states, so it is called high rebound sponge.
Its process uses cold molding process molding of high resilience cold cured polyurethane foam, with excellent mechanical properties (high resilience, low hysteresis loss); high compression load ratio, so there is a significant sitting comfort; similar to the feel of latex surface; good air permeability and flame retardant properties. Commonly used sponge according to the structure is divided into high-density sponge, medium-density sponge, low-density sponge three. High-density sponge is a sponge whose weight per cubic meter reaches more than 45 kilograms.
Due to its short production cycle, high efficiency and low energy consumption, it has now replaced the traditional heat-cured polyurethane foam. At present, there are more large-scale professional PU manufacturers in China. The industry involved in a very wide range of uses, in the furniture industry, the aircraft industry, the toy industry, automobiles, motorcycles, trains, sporting goods industry (mainly sports protective gear) and other industrial areas have a wide range of applications. Among them are mainly motorcycle cushions, automobile headrests, backrests, sofa cushions, mattresses, car seats, sofa seats, office seats, toys, massage equipment accessories, high-density balls, various shapes of one-off sponges and so on.
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