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251 条记录 (耗时 0.015 秒)

    Polymer forming process
    83.
    发明公开
    Polymer forming process 失效
    Verfahren zum Formen eines Polymers。

    公开(公告)号：EP0272015A2

    公开(公告)日：1988-06-22

    申请号：EP87310575.3

    申请日：1987-12-01

    申请人： NATIONAL RESEARCH DEVELOPMENT CORPORATION

    发明人： Mackley,Malcolm Robert ,  Solbai,Samad Bin Fac. of Mechanical Engineering ,  Anton,Christopher

    IPC分类号： B29C47/54

    CPC分类号： B29C55/30 ,  B29C47/0004 ,  B29C47/0009 ,  B29C47/54 ,  B29K2023/06 ,  B29K2023/0683 ,  B29K2023/12 ,  B29K2023/16 ,  B29K2105/0061 ,  B29K2105/0085 ,  B29K2995/0088

    摘要： A process for the extrusion of orientable, thermoplastic polymer material such as ultra high molecular weight polyethylene comprises:

    (i) forming a gel of a polymer material by crystallisation from a solution thereof in a solvent;
    (ii) removing solvent from the gel to produce a polymer material containing not more than 5% by weight of solvent; and
    (iii) extruding the solid polymer material through a die so as to orient the polymer material. The product may have a cross-sectional area of at least 10mm² and a Young's modulus of at least 15 GPa.

    摘要翻译： 用于挤出可取向的热塑性聚合物材料如超高分子量聚乙烯的方法包括：（i）通过在溶剂中从其溶液中结晶形成聚合物材料的凝胶; （ii）从凝胶中除去溶剂以产生含有不超过5重量％溶剂的聚合物材料; 和（iii）通过模头挤出固体聚合物材料以使聚合物材料定向。 该产品的横截面积至少为10mm 2，杨氏模量可以至少为15GPa。 米

    Gas conditioned modular slush molding machine
    84.
    发明公开
    Gas conditioned modular slush molding machine 失效
    气体调制模具SLUSH成型机

    公开(公告)号：EP0186285A3

    公开(公告)日：1988-02-17

    申请号：EP85307867

    申请日：1985-10-30

    申请人： EX-CELL-O CORPORATION

    发明人： Anestis, Emmanuel ,  Wakefield, Frederick I.

    IPC分类号： B29C41/46 ,  B29C41/18 ,  B29C35/04 ,  B29C33/04

    CPC分类号： B29C33/046 ,  B29C35/007 ,  B29C35/04 ,  B29C41/18 ,  B29C41/46 ,  B29K2105/0061 ,  Y10S264/60

    摘要： A method and an assembly for practicing that method wherein an article is molded of a heat-fusing material or plastisol, either liquid or dry, in a mold having an array of gas impingement jets disposed adjacent the backside of a mold surface for controlling the temperature over respective first and second areas of the mold surface. There is included first and second gas heating and cooling circuits each including a blower and dampers for supplying gas at the gas impingement jets associated with the mold. All of the gas impingement jets are supplied with heated gas to preheat the mold surface to a non-gelling temperature and a liquid plastisol coating is applied to the mold surface. To obtain the coating, the mold is filled and the excess plastisol is removed from the mold by dumping the plastisol from the mold into a dump tank. In a liquid plastisol process, a first group of gas jets arranged in close proximity to the mold maintain a temperature higher than the temperature of the liquid in the first area of the mold to a higher temperature than the second area. Additional liquid plastisol is disposed in the mold over the coating and is gelled over the first area of the mold which is heated with the heat supplied by the liquid in the first group of passages thereby gelling a predetermined thickness of the plastisol in selected areas while retaining the thickness over the second area.

    Shaped polyethylene articles of intermediate molecular weight and high modulus
    86.
    发明公开
    Shaped polyethylene articles of intermediate molecular weight and high modulus 失效
    一种成型体，由中等分子量的高模量的聚乙烯。

    公开(公告)号：EP0187974A2

    公开(公告)日：1986-07-23

    申请号：EP85116065.5

    申请日：1985-12-17

    申请人： AlliedSignal Inc.

    发明人： Kavesh, Sheldon ,  Prevorsek, Dusan Ciril

    IPC分类号： D01F6/04 ,  D01D5/00 ,  C08J5/18

    CPC分类号： D01F6/04 ,  B29C47/0004 ,  B29C47/0014 ,  B29C47/0021 ,  B29K2023/06 ,  B29K2105/0061 ,  B29K2223/06 ,  B29K2995/0088 ,  C08J5/18 ,  C08J2323/06 ,  D01D5/00 ,  D07B1/02 ,  D07B1/025 ,  D07B2205/2014 ,  D10B2321/0211 ,  Y10T428/2913 ,  Y10T428/2967 ,  Y10T428/31855 ,  D07B2801/10

    摘要： Solutions of intermediate molecular weight polymers from about 200,000 to about 4,000,000, such as polyethylene, in a relatively non-volatile solvent are extruded through an aperature at constant concentration and thereafter stretched at a ratio of at least about 3:1 prior to cooling to form a first gel. The first gels are extracted with a volatile solvent to form a second gel, and the second gel is dried to form a low porosity xerogel. Stretching occurs with any one or more of the first gel, second gel or xerogel. The polyethylene products produced by our process include products having a molecular weight between about 200,000 and about 4,000,000 a tenacity of at least about 13 grams/denier, a modulus of at least about 350 gram/denier, a porosity of less than 10% by volume, a crystalline orientation function of at least about 0.95, and a main melting temperature of at feast about 140°C.

    摘要翻译： 1之前冷却，以形成为：从约200,000至约4,000,000，：中间分子量聚合物溶液，例如聚乙烯，在相对不挥发的溶剂，通过在通光孔径挤出以恒定的浓度，然后在至少为约3:1的比例拉伸 第一凝胶，第一凝胶用挥发性溶剂提取以形成第二凝胶，和第二凝胶干燥以形成一个低孔隙率的干凝胶。 拉伸发生与任何一个或多个所述第一凝胶，第二凝胶或干凝胶。 由我们的方法所生产的聚乙烯产品包括具有约200,000至约4000000至少约13克/旦尼尔的韧度，至少约350克/旦尼尔的模量，小于10体积％的孔隙率之间的分子量的产品 ，至少约0.95的结晶取向的功能，和至少约140℃的主熔融温度

    Gas conditioned modular slush molding machine
    87.
    发明公开
    Gas conditioned modular slush molding machine 失效
    Mit Gas konditionierte Modularvorrichtung zum Giessen vonHohlkörpern。

    公开(公告)号：EP0186285A2

    公开(公告)日：1986-07-02

    申请号：EP85307867.3

    申请日：1985-10-30

    申请人： DAVIDSON TEXTRON INC.

    发明人： Anestis, Emmanuel ,  Wakefield, Frederick I.

    IPC分类号： B29C41/46 ,  B29C41/18 ,  B29C35/04 ,  B29C33/04

    CPC分类号： B29C33/046 ,  B29C35/007 ,  B29C35/04 ,  B29C41/18 ,  B29C41/46 ,  B29K2105/0061 ,  Y10S264/60

    摘要： A method and an assembly for practicing that method wherein an article is molded of a heat-fusing material or plastisol, either liquid or dry, in a mold having an array of gas impingement jets disposed adjacent the backside of a mold surface for controlling the temperature over respective first and second areas of the mold surface. There is included first and second gas heating and cooling circuits each including a blower and dampers for supplying gas at the gas impingement jets associated with the mold. All of the gas impingement jets are supplied with heated gas to preheat the mold surface to a non-gelling temperature and a liquid plastisol coating is applied to the mold surface. To obtain the coating, the mold is filled and the excess plastisol is removed from the mold by dumping the plastisol from the mold into a dump tank. In a liquid plastisol process, a first group of gas jets arranged in close proximity to the mold maintain a temperature higher than the temperature of the liquid in the first area of the mold to a higher temperature than the second area. Additional liquid plastisol is disposed in the mold over the coating and is gelled over the first area of the mold which is heated with the heat supplied by the liquid in the first group of passages thereby gelling a predetermined thickness of the plastisol in selected areas while retaining the thickness over the second area.

    摘要翻译： 一种用于实施该方法的方法和组件，其中制品由热熔材料或塑料溶胶（液体或干燥）模制而成，该模具具有邻近模具表面背面设置的气体冲击射流阵列，用于控制温度 在模具表面的相应的第一和第二区域上。 包括第一和第二气体加热和冷却回路，每个气体加热和冷却回路包括用于在与模具相关联的气体冲击射流处供应气体的鼓风机和阻尼器。 所有气体冲击射流都被供应加热气体，以将模具表面预热到非胶凝温度，并将液体增塑溶胶涂层施加到模具表面。 为了获得涂层，模具被填充，并且通过将增塑溶胶从模具中倾倒到倾卸罐中而从模具中除去多余的增塑溶胶。 在液体增塑溶胶工艺中，靠近模具布置的第一组气体喷射器保持比模具的第一区域中的液体的温度高到比第二区域更高的温度。 附加的液体增塑溶胶在模具中设置在涂层上并且凝胶化在模具的第一区域上，该模具的第一区域被第一组通道中的液体供应的热量加热，从而在预定区域内凝胶化预定厚度的增塑溶胶，同时保留 第二区域的厚度。

    Heat shrinkable material and articles
    89.
    发明公开
    Heat shrinkable material and articles 失效
    Wärmeschrumpfbares材料和Gegenstände。

    公开(公告)号：EP0164779A1

    公开(公告)日：1985-12-18

    申请号：EP85200743.4

    申请日：1985-05-10

    申请人： STAMICARBON B.V.

    发明人： Lemstra, Pieter Jan

    IPC分类号： B29C61/00 ,  C08J5/18 ,  D01F6/04 ,  D06M10/00 ,  B29C71/04

    CPC分类号： C08J5/18 ,  B29C35/08 ,  B29C47/00 ,  B29C47/0014 ,  B29C55/00 ,  B29C61/003 ,  B29K2023/06 ,  B29K2105/0061 ,  B29K2105/24 ,  B29K2995/0088 ,  C08J2323/06 ,  D01F6/04 ,  D06M10/008 ,  Y10T428/2913

    摘要： Heat shrinkable material obtained by

    a) thermoreversible gelation of a solution of a linear polyethylene having a weight-average molecular weight of at least 4 × 10 5 to form a gel material having virtually the same composition as the solution started from, and
    b) irradiation of said gel material with simultaneous or subsequent stretching at a stretch ratio of at least 15.

    Specifically claimed are articles, such as fabrics woven from fibres, and tubes or tapes, having an extremely high shrink ratio upon heating.

    摘要翻译： 通过以下方法获得的热收缩材料：a）重均分子量至少为4×10 5的线型聚乙烯溶液的热可逆凝胶化，以形成与起始溶液实质上相同组成的凝胶材料，和 b）以同时或随后的拉伸比为15以上的拉伸比照射所述凝胶材料。具体地说，是从纤维编织的织物，以及具有非常高的收缩比的管或带 加热时。