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    PROCESS FOR FORMING A ROTATIONAL MOLDED ARTICLE
    2.
    发明申请
    PROCESS FOR FORMING A ROTATIONAL MOLDED ARTICLE 审中-公开

    公开(公告)号：WO2019182893A1

    公开(公告)日：2019-09-26

    申请号：PCT/US2019/022470

    申请日：2019-03-15

    Applicant: DOW GLOBAL TECHNOLOGIES LLC

    Inventor： COOPER, Russell T. ,  SANKETH, Kumar N. ,  FAN, Yi ,  BISHOP, Matthew ,  GORIN, Craig F. ,  DERMODY, Daniel L.

    IPC: B29C41/00 ,  B29C41/04 ,  B29C41/06 ,  B29C41/22

    Abstract: The present disclosure provides a process. The process includes providing a blend containing (A) a first powder including (i) a polyolefin having a density from 0.860 g/cc to 0.910 g/cc, and a melt index from 1.5 g/10 min to 1,000 g/10 min; (ii) from 1 wt% to 15 wt% of a dispersant selected from an acrylic dispersant, a poloxamer, and combinations thereof; and (iii) optionally, a polyolefin wax, the first powder having a mean volume average particle size from 1 µm to 300 µm; and (B) a second powder including an ethylene/α-olefin copolymer having (i) a density from 0.920 g/cc to 0.955 g/cc; and (ii) a melt index from 1.0 g/10 min to 15 g/10 min, the second powder having a mean volume average particle size from 325 µm to 4,000 µm; and rotational molding the blend to form a rotational molded article.

    SPHERICAL CENTRIFUGE
    4.
    发明申请
    SPHERICAL CENTRIFUGE 审中-公开
    球形离心机

    公开(公告)号：WO2013066415A1

    公开(公告)日：2013-05-10

    申请号：PCT/US2012/041317

    申请日：2012-06-07

    Applicant: CIARDULLO, Jean-Paul

    Inventor： CIARDULLO, Jean-Paul

    IPC: B29C41/06

    CPC classification number: B22D13/04 ,  B22D23/06 ,  B22D27/15 ,  B29C41/06 ,  B29L2022/002

    Abstract: Devices and methods are disclosed for the centrifugal casting of spheres, particularly hollow spheres containing low air pressure, as well as solid and hollow spheres having a gradient internal density. Molten or self-hardening casting material is introduced into a hollow spherical mold and the mold made to rotate about two axes intersecting at the center of the mold. The resulting centrifugal forces cause the casting material to be evenly distributed about the inner surface of the mold. If a mixture of casting materials of different densities is used, the densest material will settle closer to the walls of the mold, while less dense materials will move closer to the center. The casting material is hardened and the resulting sphere is removed from the mold.

    Abstract translation: 公开了用于离心铸造球体，特别是含有低空气压力的中空球体的装置和方法，以及具有梯度内部密度的固体和中空球体。 将熔融或自硬化铸造材料引入中空球形模具中，并且模具围绕与模具中心相交的两个轴线旋转。 所产生的离心力导致铸造材料围绕模具的内表面均匀分布。 如果使用不同密度的铸造材料的混合物，则最密集的材料将会靠近模具的墙壁放置，而较不致密的材料会靠近中心移动。 将铸造材料硬化并将所得球体从模具中取出。

    A FLUID RESERVOIR AND A METHOD OF MANUFACTURING THEREOF
    7.
    发明申请
    A FLUID RESERVOIR AND A METHOD OF MANUFACTURING THEREOF 审中-公开
    流体储存器及其制造方法

    公开(公告)号：WO2008049137A1

    公开(公告)日：2008-04-24

    申请号：PCT/ZA2006/000118

    申请日：2006-10-19

    Applicant: SMIT, Hendrik, Johannes, Christiaan (Snr) ,  SMIT, Hendrik Johannes Christiaan (Jnr)

    Inventor： SMIT, Hendrik, Johannes, Christiaan (Snr) ,  SMIT, Hendrik Johannes Christiaan (Jnr)

    IPC: B65D88/06 ,  B65D90/02 ,  B29C39/12 ,  B29C41/06 ,  B29C41/22

    CPC classification number: B65D88/06 ,  B29C39/126 ,  B29C41/06 ,  B29C41/22 ,  B65D90/022 ,  B65D90/028

    Abstract: A method of manufacturing a fluid reservoir (10) includes at least the steps of providing a double-skinned mould for forming inner and outer shells (14.1 and 14.2) of the fluid reservoir (10), introducing a thermoplastic material into a cavity (16) defined between the two skins of the mould and sealing the mould. The mould and thereby the thermoplastic material is then heated to about 260 °C whilst being subjected to vertical and horizontal rotation. Once the thermoplastic material has coated the surfaces of the mould, the mould is permitted to cool gradually after which the inner and outer shells (14.1 and 14.2) are removed from the mould.

    Abstract translation: 制造流体储存器（10）的方法至少包括提供用于形成流体储存器（10）的内壳和外壳（14.1和14.2）的双皮模具，将热塑性材料引入空腔（16） ）在模具的两个表皮之间定义并密封模具。 然后将模具，从而将热塑性材料加热至约260℃，同时进行垂直和水平旋转。 一旦热塑性材料涂覆了模具的表面，就允许模具逐渐冷却，之后将内壳和外壳（14.1和14.2）从模具中取出。

    POLYETHYLENE LOW TEMPERATURE CAULKING COMPOSITION
    8.
    发明申请
    POLYETHYLENE LOW TEMPERATURE CAULKING COMPOSITION 审中-公开
    聚乙烯低温灌装组合物

    公开(公告)号：WO2006036526A3

    公开(公告)日：2006-11-30

    申请号：PCT/US2005032479

    申请日：2005-09-12

    Applicant: STEVENSON MICHAEL J

    Inventor： STEVENSON MICHAEL J ,  REEVES ROBERT ALAN

    IPC: C08K5/01 ,  B29C33/74 ,  B29C37/00 ,  B29C41/00 ,  B29C41/06 ,  B29C41/20 ,  B29C41/22 ,  B29C73/02 ,  C08L101/00

    CPC classification number: C08K5/01 ,  B29C33/74 ,  B29C37/0057 ,  B29C41/003 ,  B29C41/06 ,  B29C41/20 ,  B29C41/22 ,  B29C73/02 ,  C08L2205/18 ,  C08L23/06

    Abstract: The polyethylene caulking composition of the invention is a mixture of a carrier and binder component and polyethylene powder. The carrier and binder component is a liquid hydrocarbon oil. The polymer is finely subdivided polyethylene, preferably ultra high molecular weight, having a low melt index, no greater than 30. The composition is thixotropic with a consistency of toothpaste, typically having a stirred viscosity up to 30,000 centipoise at ambient temperature, which is suitable for use as a caulking composition. The caulking composition of the invention can be extruded at low pressures through a caulking gun or from a squeeze tube to plug vent holes or perforations in molded, hollow-­form polyethylene parts, or applied as a caulk onto the flange surfaces of rotational molds.

    Abstract translation: 本发明的聚乙烯填缝料组合物是载体和粘合剂组分与聚乙烯粉末的混合物。 载体和粘合剂组分是液态烃油。 该聚合物是细分的聚乙烯，优选超高分子量，具有低的熔体指数，不大于30.该组合物是触变性的，具有牙膏的稠度，通常在环境温度下具有高达30,000厘泊的搅拌粘度，这是合适的 用作填缝剂组合物。 本发明的嵌缝组合物可以在低压下通过填缝枪或挤压管挤出以堵塞模制的中空形式的聚乙烯部件中的通气孔或穿孔，或者作为填缝剂施加到旋转模具的凸缘表面上。

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