Rotomolding process to form a product having multiple colors in a
non-random, sequentially segregated and controlled patterns
    62.
    发明授权
    Rotomolding process to form a product having multiple colors in a non-random, sequentially segregated and controlled patterns 失效
    滚动过程以非随机,顺序分离和控制的模式形成具有多种颜色的产品

    公开(公告)号:US06126881A

    公开(公告)日:2000-10-03

    申请号:US221485

    申请日:1998-12-24

    申请人: Thomas Eckert

    发明人: Thomas Eckert

    IPC分类号: B29C41/06 B29C41/22 B29C39/12

    摘要: A process for forming a product having multiple and well defined color patterns. In a first embodiment, the rotomolding process comprises a first step of using a first powder having a first color and a second powder having a second color which is different than the color of the first powder. The rotomolding process comprises a second step of placing the first and second color powders into a pre-determined pattern within a hollow cavity mold. The rotomolding process comprises a third step of placing the closed hollow cavity mold into the oven. The rotomolding process comprises a fourth step of heating the hollow cavity mold with no rotation for a first period defined by the heating time necessary for a layer of individual colors to melt in the desired pattern upon the inside surface of the hollow cavity mold. The rotomolding process comprises a fifth step of rotating the hollow cavity mold in a bi-axis manner while heating the hollow cavity mold for a second period of time defined by the heating time necessary to completely melt the remaining material in the hollow cavity mold. The rotomolding process comprises a sixth step of cooling the hollow cavity mold to solidify the product. The rotomolding processes comprises a seventh step of removing the product from the hollow cavity mold. The resulting product comprises a first color pattern having the color of the first color powder and a second color pattern having the color of the second color powder.

    摘要翻译: 一种用于形成具有多个且明确定义的颜色图案的产品的方法。 在第一实施例中,滚塑过程包括使用具有第一颜色的第一粉末和与第一粉末的颜色不同的第二颜色的第二粉末的第一步骤。 滚塑过程包括将第一和第二颜色粉末放置在中空模具模具内的预定图案中的第二步骤。 滚塑工艺包括将封闭的空腔模具放入烘箱中的第三步骤。 滚塑过程包括第四步骤,在空心模具的内表面上,以不同的颜色层以期望的图案熔化所需的加热时间所限定的第一期间,不加旋转空心模具。 滚塑过程包括第五步骤,以双轴方式旋转中空腔模具,同时加热中空腔模具第二时间段,该第二时间段由完全熔化中空腔模具中的剩余材料所需的加热时间限定。 滚塑工艺包括冷却中空腔模以固化产品的第六步骤。 滚塑工艺包括从中空模具中去除产品的第七步骤。 所得产品包括具有第一颜色粉末颜色的第一颜色图案和具有第二颜色粉末颜色的第二颜色图案。

    Method for molding one-piece, multiple color body
    64.
    发明授权
    Method for molding one-piece, multiple color body 失效
    单件,多色体成型的方法

    公开(公告)号:US5932161A

    公开(公告)日:1999-08-03

    申请号:US827563

    申请日:1997-04-01

    摘要: A mailbox combines a box body and a support molded in one piece together with working hardware, such as a handle, a door or a hinge structure for closing and opening the door of the box. The support provides multiple mounting options through a leg with an elongated segment including an expanded foot, that can be embedded in a ground surface. Alternatively, the elongated segment is truncated to expose an open end of a hollow leg. The present invention also provides a process for molding a mailbox box portion and a post portion in one piece, with the box portion including a door, a box body, and a transition sleeve connecting the door to the box body. The sleeve is truncated from the door and the box body to form an open end on the box body, and the door is pivotally mounted at the open end of said box portion. A method for rotationally molding a one-piece product with two segregated exterior color portions includes separating first and second mold chambers in a mold part by a partition wall including an access opening filled with a barrier plastic. Separated color molding material is rotationally molded in each chamber until the barrier melts during the rotational molding process.

    摘要翻译: 邮箱结合了箱体和与工作硬件一体成型的支撑件,例如用于关闭和打开箱体门的手柄,门或铰链结构。 支撑件通过腿部提供多个安装选项,其具有包括可扩展的脚的细长段,其可嵌入地面。 或者,细长段被截断以暴露空心腿的开口端。 本发明还提供了一种用于将邮箱箱部分和柱部分模制成一体的方法,盒部分包括门,盒体和将门连接到盒体的过渡套筒。 套筒从门和盒体截取,以在盒体上形成开口端,并且门枢转地安装在所述盒部分的开口端。 用于旋转成型具有两个分离的外部颜色部分的单件产品的方法包括通过包括填充有阻挡塑料的进入开口的分隔壁将模具部分中的第一和第二模具室分离。 分离的彩色成型材料在每个室中旋转模制,直到阻挡层在旋转模制过程中熔化。

    Automatic rotamoulding apparatus and method of control
    65.
    发明授权
    Automatic rotamoulding apparatus and method of control 失效
    自动旋转装置及其控制方法

    公开(公告)号:US5868979A

    公开(公告)日:1999-02-09

    申请号:US693325

    申请日:1996-10-15

    申请人: Robert John Glenn

    发明人: Robert John Glenn

    摘要: A method for controlling an automatic rotamolding process, the method including the steps of: metering a first prescribed quantity of plastics material powder into a hopper to be delivered to a rotatable mold as a first shot; heating the mold; when the mold reaches a prescribed temperature, delivering the first shot of powder from the hopper to the mold and simultaneously rotating the mold so as to distribute the powder over an interior surface of the mold; heating the mold in accordance with a predetermined temperature-time characteristic; cooling the mold; and ejecting the finished rotamolded product from the mold.

    摘要翻译: PCT No.PCT / AU95 / 00081 Sec。 371日期1996年10月15日 102(e)日期1996年10月15日PCT提交1995年2月17日PCT公布。 公开号WO95 / 22449 日期1995年08月24日一种控制自动旋转糊化过程的方法,所述方法包括以下步骤:将第一规定量的塑料粉末计量到料斗中,以作为第一次喷射输送到可旋转模具; 加热模具; 当模具达到规定温度时,将粉末的第一次喷射从料斗输送到模具并同时旋转模具以将粉末分布在模具的内表面上; 根据预定的温度 - 时间特性加热模具; 冷却模具; 并从模具中排出成品的旋转糊化产品。

    Method and apparatus for internally and externally coating enclosed
metallic structures
    66.
    发明授权
    Method and apparatus for internally and externally coating enclosed metallic structures 失效
    用于内部和外部涂覆封闭金属结构的方法和装置

    公开(公告)号:US5728423A

    公开(公告)日:1998-03-17

    申请号:US410802

    申请日:1995-03-27

    申请人: L. Keith Rogerson

    发明人: L. Keith Rogerson

    摘要: A process and apparatus for internally and externally coating enclosed structures with polymeric materials are provided. In general, the process includes loading a polymeric material into the interior of an enclosed structure. The enclosed structure is then heated and rotated until a polymeric lining is formed within the structure. A second coat of polymeric material may be applied to the exterior surface of the enclosed structure while the enclosed structure is at a temperature sufficient to melt the polymeric material. The enclosed structure can include tanks, drums, barrels, pipes, and the like. In one embodiment, an apparatus having a plurality of arms is used to rotate the enclosed structures between stations corresponding to different steps in the process. The apparatus can include a cooling system for cooling the arms during operation.

    摘要翻译: 提供了一种用聚合物材料内部和外部涂覆封闭结构的方法和装置。 通常,该方法包括将聚合物材料加载到封闭结构的内部。 然后将封闭的结构加热并旋转直到在结构内形成聚合物衬里。 聚合物材料的第二层可以施加到封闭结构的外表面,而封闭结构处于足以熔化聚合材料的温度。 封闭结构可以包括罐,桶,桶,管等。 在一个实施例中,使用具有多个臂的装置来旋转对应于该过程中的不同步骤的站之间的封闭结构。 该装置可以包括用于在操作期间冷却臂的冷却系统。

    Polyvinyl chloride resin composition for powder molding
    68.
    发明授权
    Polyvinyl chloride resin composition for powder molding 失效
    用于粉末成型的聚氯乙烯树脂组合物

    公开(公告)号:US5310805A

    公开(公告)日:1994-05-10

    申请号:US964862

    申请日:1992-10-22

    CPC分类号: B29C41/04

    摘要: Disclosed is a polyvinyl chloride resin powder composition for rotational molding, which is prepared by dry-blending a plasticizer and a stabilizer with a polyvinyl chloride resin followed by incorporating from 0.1 to 5 parts by weight, to 100 parts by weight of the polyvinyl chloride resin, of a finely divided polyvinyl chloride resin having a viscosity average polymerization degree of from 2000 to 5000 into the resulting dry blend. Also disclosed is a method of producing a molded article by subjecting the composition to rotational molding. The composition has good powder flowability for rotational molding, and the molded article from the composition is free from pin holes and blocks on the surface thereof.

    摘要翻译: 公开了一种用于旋转成型的聚氯乙烯树脂粉末组合物,其通过用聚氯乙烯树脂将增塑剂和稳定剂干混,然后将0.1至5重量份掺入100重量份的聚氯乙烯树脂 的一种细分散的聚氯乙烯树脂,其粘均聚合度为2000-5000。 还公开了通过使组合物进行旋转成型来制造模制品的方法。 该组合物具有良好的用于旋转成型的粉末流动性,并且来自该组合物的模制品在其表面上没有针孔和块。

    Apparatus for molding an article from a fusible synthetic resin
    69.
    发明授权
    Apparatus for molding an article from a fusible synthetic resin 失效
    用于从可熔合成树脂模制制品的装置

    公开(公告)号:US4979888A

    公开(公告)日:1990-12-25

    申请号:US311233

    申请日:1989-02-15

    摘要: An apparatus for reflow smoothing a molded article made by first heating a face of a mold at a first station, then applying a fusible synthetic resin to the heated face and thereby melting the resin into a continuous coating covering the heated mold face at a second station spaced angularly from the first station, and cooling the coating and mold at the second station until the coating hardens. To reflow smooth the article, the surface of the cooled coating is then smoothed by confining the mold and hardened coating in a substantially closed chamber at the second station and reheating the confined coating until its surface flows. Thereafter the coating is cooled again at a third station angularly spaced from and downstream of the second station until it hardens and the hardened covering is stripped from the mold at a fourth station angularly spaced downstream of the third station and upstream of the first station.

    摘要翻译: 一种用于回流平滑模制品的装置,其通过在第一工位处首先加热模具的表面,然后将可熔合成树脂施加到加热面上,从而将树脂熔化成在第二工位上覆盖加热的模具表面的连续涂层 与第一站成角度地间隔开,并在第二站处冷却涂层和模具,直到涂层硬化。 为了使物品回流平滑,然后将冷却的涂层的表面通过将模具和硬化涂层限制在第二站的基本封闭的腔室中并使被限制的涂层重新加热直到其表面流动而被平滑。 此后,再次在与第二工位角度间隔开并在第二工位的下游的第三工位上冷却涂层,直到硬化,并且硬化的覆盖物在第三工位的第三工位的下游和第一工位的上游的第四工位处从模具剥离。

    Method for forming expanded foam rotomolded products
    70.
    发明授权
    Method for forming expanded foam rotomolded products 失效
    膨胀泡沫塑料制品的形成方法

    公开(公告)号:US4952350A

    公开(公告)日:1990-08-28

    申请号:US208912

    申请日:1988-06-20

    申请人: Keith Duffy

    发明人: Keith Duffy

    摘要: A method and apparatus for forming a product, and the product, such as a buoy with a plastic outer skin or shell and a plastic foam interior are provided. A first charge including, in one exemplary embodiment, a cross-linkable resin is added to a mold component, followed by a second charge, isolated from the first, and including in the exemplary embodiment expandable polystyrene beads. The apparatus is rotated about two mutually perpendicular axes. Initially, the cross-linkable composition is rotation molded against the walls of the mold to form the outer shell. Thereafter, the second charge of polystyrene beads is released within the mold, at a sufficient temperature to cause expansion of said beads against the shell.

    摘要翻译: 提供了一种用于形成产品的方法和装置,以及产品,例如具有塑料外皮或外壳的浮标和塑料泡沫内部。 在一个示例性实施方案中,包括可交联树脂的第一电荷被加入到模具部件中,随后是从第一电荷隔离的第二电荷,并且在示例性实施方案中包括可发性聚苯乙烯珠。 该装置围绕两个相互垂直的轴线旋转。 最初,可交联组合物相对于模具的壁旋转模制以形成外壳。 此后,在足够的温度下,在模具内释放第二次聚苯乙烯珠的装料,以使所述珠粒膨胀抵靠壳体。