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Material three-system of polymer material used for vibration board

    The polymeric material is a material that queues up extremely a lot of molecular weight in the distance which the molecule is near. Typical [zai] is the press stick pomade fibers etc. such as polyethylenes and polypropylenes (It is used for the Saranwrap).

  It came to be used as a means of the improvement of the ratio elasticity rate of the paper system vibration board (earliness that the material restored to the origin) in from the 1970's coming use as the speaker vibration board though these materials were invented in the 1950's. A polymer system material of [korara] sticks together to the honeycomb construction and other materials and is used.

It is composite materials of polypropylene (PP), polyethylene (PE), polystyrene, [poriechirenterefuta-to] (PET), [porimechirumetaakurire-to], [pirimechirupenten] (TPX), polyolefin, [porie-teruimido] (PEI), liquid crystalline polymer (LCP), carbon fiber (CF), [aramiddo] fiber (AF), and the thermosetting resin in typical [zai]. (CFRP,AFRP)