Polymeric materials.

(57) It is related with the homogeneous polymer substance manufactured from a summary subject orientation polymer fiber. The collection object of the fiber of orientation polymer is compressed between heat, and the sheet which has outstanding mechanical properties is formed in the direction which crosses the direction in which especially a fiber carries out orientation. That is, exposing to the contact pressure of sufficient pressure, in order to maintain a fiber in the contact state, it heats to compression temperature and maintains to this temperature, and according to the initial processing process compressed in the compression pressure of pressure higher than after that, some polymer substances in a fiber 溶融, then it recrystallizes, and both fibers are combined. Solution means It is a homogeneous polymer substance which consists of a compression aggregate of the orientation polymer fiber combined by polymer recrystallization 溶融相, The polymer substance in which it is obtained from the aggregate of an orientation polymer fiber outrider object, and the 溶融相 consists of 5*50% of the weight of a polymer content of the substance, and the orientation polymer fiber and its 溶融相 have the melting point lower than the melting point of an orientation polymer fiber.