Porous filter media and membrane support means
    5.
    发明授权
    Porous filter media and membrane support means 失效
    多孔过滤介质和膜支撑装置

    公开(公告)号:US4904385A

    公开(公告)日:1990-02-27

    申请号:US196176

    申请日:1988-05-19

    摘要: A method for filtering liquid or gaseous materials where the filtration is conducted with a porous filter media prepared from an aqueous wet-laid, lofted fiber-reinforced composite sheet, the composite sheet comprising a heat fusible polymer, reinforcing fibers and a binder. The random fiber composite sheet can be selectively lofted or recompressed to form filter media having variable porosity. Also, a membrane support means prepared by applying or treating the fiber-reinforced composite sheet with a discriminating membrane layer.

    摘要翻译: 一种用于过滤液体或气体材料的方法,其中用由湿法成网的高纬纤维增强复合片材制备的多孔过滤介质进行过滤,所述复合片材包含热熔聚合物,增强纤维和粘合剂。 无规纤维复合片材可以选择性地放置或再压缩以形成具有可变孔隙率的过滤介质。 而且,通过用鉴别膜层施加或处理纤维增强复合片而制备的膜支撑装置。

    Method of forming blanks for the solid-phase forming of thermoplastic
articles
    7.
    发明授权
    Method of forming blanks for the solid-phase forming of thermoplastic articles 失效
    形成热塑性制品的固相成型用毛坯的方法

    公开(公告)号:US4510108A

    公开(公告)日:1985-04-09

    申请号:US427232

    申请日:1982-09-29

    摘要: An improved, essentially scrap-free, solid-phase process for making thermoplastic articles directly from resinous powder. The process can be particularly advantageous to forming large parts from thermoplastic resinous powders. The method essentially comprises taking resinous powder, briquetting the powder, sintering the briquette, repressing the powder in a warm state and then shaping the briquette into a preform or a blank which can then be thermoformed into a resulting container or other product, assuming the blank itself is not the desired end product. Alternatively, sintering can take place after repressing with preheating of the briquette prior to the repressing step.

    摘要翻译: 用于直接从树脂粉末制造热塑性制品的改进的,基本上无屑的固相方法。 该方法可以特别有利于从热塑性树脂粉末形成大的部件。 该方法基本上包括取树脂粉末,将粉末压块,烧结团块,在温暖状态下压制粉末,然后将团块成型成预成型件或坯料,然后将其热成型为所得容器或其他产品,假设空白 本身不是期望的最终产品。 或者,可以在压制步骤之前用预热的压块压制之后进行烧结。