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    • 65. 发明授权
    • Apparatus for producing porous shaped products
    • 用于生产多孔成形制品的装置
    • US4373887A
    • 1983-02-15
    • US239556
    • 1981-03-02
    • Timothy A. HansonDavid W. Smith
    • Timothy A. HansonDavid W. Smith
    • B29C44/36B29C67/20
    • B29C44/36B29C67/205B29L2031/14
    • Apparatus for producing a porous plastic molded product of uniform, predictable porosity throughout. A fluidized airstream of moldable plastic powder is formed. Water may be injected into said fluidized powder airstream for maintaining said powder in a uniform, fluidized dispersion. The moisturized, fluidized, powder airstream is injected into a cavity of a closed mold to fill said mold cavity with said powder. The mold is maintained at a temperature and for a time sufficient to at least partially fuse said powder particles together without melting said particles, thereby to form a porous, plastic molded product. The mold is partially separated for cooling the product which is then discharged from the mold. The product may be further cured by heating the molded product in an oven at a temperature and for a time sufficient to cure said molded product without melting said plastic or glazing said product.
    • 用于生产均匀的,可预测的孔隙率的多孔塑料模制产品的装置。 形成可塑性塑料粉末的流化气流。 可以将水注入到所述流化粉末气流中,以将所述粉末保持在均匀的流化分散体中。 将保湿的,流化的粉末气流注入封闭模具的空腔中,以用所述粉末填充所述模腔。 将模具保持在足以使所述粉末颗粒至少部分熔融在一起的温度和时间,而不熔化所述颗粒,从而形成多孔塑料模制产品。 模具被部分分离以冷却产品,然后从模具中排出。 可以通过在烘箱中在足以固化所述模制产品的温度和时间下加热模制产品而不熔化所述塑料或上述所述产品来进一步固化产品。