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    • 72. 发明专利
    • MANUFACTURE OF SHOCK ABSORBING MATERIAL AND APPARATUS THEREFOR
    • JPH0939062A
    • 1997-02-10
    • JP19836695
    • 1995-08-03
    • KOWA KOGYO
    • SHIMAOKA KOICHI
    • B65D81/09B29C47/00B29C47/10B29K96/00B29K105/04C08J9/12
    • PROBLEM TO BE SOLVED: To manufacture shock absorbing materials with a simplified extruder by pushing a raw material mainly composed of alpha-adjusted starch with a low moisture content into a die, extruding the raw material in the form of a string while heating the same under pressure to perform foaming, and further cutting the extruded and foamed article into a proper shape. SOLUTION: A hopper 9 of a feeder 5 is first charged with a raw material mainly composed of alpha-adjusted starch with a low moisture content. Then, this raw material is guided by a screw 10 of the feeder 5, which charges it into a hopper of a barrel 1, and a fixed quantity of the raw material is fed into the barrel 1. The raw material in the fixed quantity thus fed is kneaded by a kneading screw in the barrel 1, heated by a heater 3 just before being extruded from a die, and then extruded in the form of a string to be expanded. Further the foamed article extruded in the form of a string is cut in the form of pellets by a cutting blade 15 of a cutting machine 6 to make finished products. If such a raw material is used, the degree of viscosity of the raw material in a barrel in an extruder can be controlled to a low level when the raw material is extruded and expanded.