The hottest polyurethane foam foam creates a comfo

[figure] polyurethane foam foam creates a comfortable siders earphone

sponge, a chemical compound used in many places in daily life. What kind of sponge is a high-quality sponge

polyurethane foam creates comfortable siders earphones

good quality cotton wool is generally soft in color, white or milky white. The fiber is fluffy and uniform, soft and elastic. The recycled cotton of old cotton has a smell due to the use of sulfur bleaching or washing powder, while the recycled cotton produced from clothing waste will have a smell of medicine, mildew and so on

1. When choosing a sponge, its tactility and elasticity are the primary factors for judging. It should feel soft and malleable; 2. In addition, the most practical way to distinguish is to fold the sponges in half and rub them together. If the sponge crumbs fall off without rubbing a few times, it should be eliminated

at present, there are many kinds of sponge produced and used, including foam cotton, shaped cotton, rubber cotton, memory cotton, etc

shaped cotton: this material cotton is made of polyurethane, mixed with foaming agent and other additives, and then pressed into a simple mold to warm up to press out sponge of different shapes. It is suitable for swivel chair sofa cushion and back cotton, and a small amount of armrests are also made of shaped cotton

foamed cotton: this material is foamed with polyether. Jinan experimental machine factory Jinan new era Gold Testing Instrument Co., Ltd. electronic tensile test is a product of the combination of modern electronic technology and mechanical transmission technology, like foamed bread. It can be foamed by mechanical equipment or manually surrounded by wood. The foamed cotton is like a square bread. After slicing process with a slicer, the thickness can be cut according to different requirements, and the softness and hardness of the foamed cotton can also be adjusted; Failed to constitute a comprehensive planning and management mechanism of system 1

rubber cotton: one of the "Hai" Zeng an said cotton, which is made of natural latex raw materials. It has rubber characteristics, excellent elasticity, good resilience, and will not deform

recycled cotton: recycled cotton is made from waste cotton, industrial leftovers, and cloth and yarn heads of textile enterprises. In particular, the raw materials may also contain waste cotton for medical use. Therefore, recycled cotton will cause harm to human health, and it is easy to cause pollution when placed together with civil cotton

in headphone products, shaped cotton and foam cotton are generally used, and some high-end products will use rubber cotton

most headphone products use shaped cotton with outstanding shaping effect in the ear fold, which has good hardness and service life, but also due to the problem of hardness, the comfort in wearing decreases

the earpiece of siders professional game headphones is made of rubber cotton foamed from natural latex raw materials. Rubber cotton has rubber characteristics, excellent elasticity, good resilience, and will not deform, but the price is not cheap, which is 3-4 times higher than foaming cotton. Nevertheless, sydes chose to use rubber cotton only to provide users with the optimal wearing comfort

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