Ultra tough plastic material

Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...


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428288, 428296, 428420, 428910, 264171, D04H 158, D04H 104




A novel and improved ultra tough polymer plastic material wherein a first polymer portion of the material has substantially non-oriented molecules forming a matrix within which there is a second polymer portion of the material having substantially oriented molecules, the first and second portions forming substantially continuous interface regions therebetween in which the first and second portions are highly diffused with each other. In a particular novel process for forming such material, one or more fibers of the material are formed and the molecules thereof are selectively oriented, the fibers are then processed to increase the thermal stability of the selectively oriented molecules so as to maintain the selected orientation thereof and a selected arrangement of the processed fibers are molded at a selected temperature and pressure, the pressure being maintained throughout the heating and cooling step of the molding process to prevent any change in the selective orientation of the molecules. The molded part then has high stength and a high degree of toughness.

patent: 3900640 (1975-08-01), Vecchiotti
patent: 4442147 (1984-04-01), Schrimer
patent: 4443513 (1984-04-01), Meitner et al.
patent: 4489133 (1984-12-01), Kornberg


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