JIS K 6401 PDF

Conventional foam is a very excellent material because it can be reduced in weight and has excellent durability. However, there is a fatal drawback that the product surface has a hard touch feeling and uncomfortable touch, and the demand has rapidly decreased in recent years. Poor durability means that the foam has poor shape stability, which causes various problems. For example, the thickness of the bed cushion decreases with use, and the thickness and hardness of the vehicle cushion change with use. In particular, in the case of a vehicle cushion, long-time vehicle operation reduces the cushion thickness and hardness at the initial design, lowers the driver's home position, and deteriorates sitting comfort and riding comfort. However, there has not yet been developed a raw material and a compound design technique that have ensured moldability while suppressing deterioration of durability, and a soft polyurethane mold foam having a lightweight, excellent durability and a soft touch on the surface has been developed.

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