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    PRESSURE TUBE OF A PLASTIC MATERIAL
    1.
    发明申请
    PRESSURE TUBE OF A PLASTIC MATERIAL 审中-公开
    塑料压力管

    公开(公告)号：WO1997041376A1

    公开(公告)日：1997-11-06

    申请号：PCT/FI1997000255

    申请日：1997-04-29

    Applicant: BOREALIS POLYMERS OY ,  LINDSTRÖM, Helge ,  NYMARK, Anders, E. ,  HEIKKILÄ, Pekka ,  EK, Carl-Gustaf

    Inventor： BOREALIS POLYMERS OY

    IPC: F16L09/12

    CPC classification number: F16L11/045 ,  B29C47/0023 ,  B29C47/24 ,  B29C47/52 ,  F16L9/12 ,  F16L9/123

    Abstract: The invention relates to a multi-layer pressure pipe (20) of a plastic material. The multi-layer pressure pipe (20) is formed by using as the extruder an extruder (10) which cross-orients the reinforcement fibers in the extruded material in the successive layers (21, 22, 23, 24), and the material extruded is a polyolefin which contains long-fiber reinforcements.

    Abstract translation: 本发明涉及一种塑料材料的多层压力管（20）。 多层压力管（20）通过使用挤出机（10）作为挤出机形成，挤出机（10）将连续层（21,22,23,24）中的挤出材料中的增强纤维交叉定向，并且材料挤出 是含有长纤维增强材料的聚烯烃。

    GAS-SEALED MATERIAL
    2.
    发明申请
    GAS-SEALED MATERIAL 审中-公开
    气体密封材料

    公开(公告)号：WO1990012061A1

    公开(公告)日：1990-10-18

    申请号：PCT/FI1990000105

    申请日：1990-04-11

    Applicant: NESTE OY ,  STJERNBERG, Maria ,  BERGSTRÖM, Christer ,  KETTUNEN, Leila ,  LINDSTRÖM, Helge ,  SEPPÄNEN, Hanneli ,  TUOMINEN, Olli

    Inventor： NESTE OY

    IPC: C08L23/02

    CPC classification number: C08L23/02 ,  C08L29/04 ,  C08L51/06 ,  C08L2666/04

    Abstract: The present invention concerns a gas-sealed material, containing polyolefin and polyvinyl alcohol. The material is manufactured by mixing in molten state 1 to 99 per cent by weight of polyolefin and 99 to 1 per cent by weight of internally plasticized vinyl alcohol polymer, and optionally 1 to 15 per cent by weight of a plasticizing agent.

    Abstract translation: 本发明涉及含有聚烯烃和聚乙烯醇的气密材料。 该材料通过在熔融状态下混合1至99重量％的聚烯烃和99至1重量％的内部增塑乙烯醇聚合物，以及任选的1至15重量％的增塑剂来制造。

    MULTILAYER PIPE
    3.
    发明申请
    MULTILAYER PIPE 审中-公开
    多层管

    公开(公告)号：WO1997033116A1

    公开(公告)日：1997-09-12

    申请号：PCT/SE1997000302

    申请日：1997-02-24

    Applicant: BOREALIS A/S ,  EK, Carl-Gustaf ,  SANDBERG, Hans ,  LINDSTRÖM, Helge

    Inventor： BOREALIS A/S

    IPC: F16L09/133

    CPC classification number: F16L11/04 ,  F16L9/133 ,  F16L57/02

    Abstract: A multilayer pipe with improved resistance to rapid crack propagation is described. The pipe consists of at least two, preferably three layers of different polyolefin plastic materials, which are so selected and combined that the pipe has resistance to rapid crack propagation, measured as the critical temperature, which is the lowest temperature at which a crack initiated in the pipe propagates a distance in the pipe of at most 4 times the diameter of the pipe, which is lower than the weighted average value of the critical temperatures of single-layer pipes of the individual plastic materials included in the multilayer pipe and having the same dimension as this. The pipe preferably has a critical temperature below -15 DEG C and consists of olefin plastics, such as polyethylene plastic and polypropylene plastic.

    Abstract translation: 描述了具有改进的抗快速裂纹扩展的多层管。 该管由至少两个，优选三层不同的聚烯烃塑料材料组成，它们被选择和组合，使得管具有抵抗快速裂纹扩展的抗性，其作为临界温度测量，临界温度是开始裂纹的最低温度 管道在管道中传播的距离最多是管道直径的4倍，低于多层管中包含的各种塑料材料的单层管道的临界温度的加权平均值，并具有相同的距离 尺寸如此。 该管优选具有低于-15℃的临界温度并且由烯烃塑料如聚乙烯塑料和聚丙烯塑料组成。

    PROCEDURE FOR MANUFACTURING A THERMALLY INSULATING SHEATH OR DUCT FOR A PIPE OR PIPES
    6.
    发明申请
    PROCEDURE FOR MANUFACTURING A THERMALLY INSULATING SHEATH OR DUCT FOR A PIPE OR PIPES 审中-公开
    制造用于管道或管道的热绝缘管道或管道的程序

    公开(公告)号：WO1984003066A1

    公开(公告)日：1984-08-16

    申请号：PCT/FI1984000013

    申请日：1984-02-03

    Applicant: NESTE OY ,  BRENNER, Johan ,  LINDSTRÖM, Helge

    Inventor： NESTE OY

    IPC: B29F03/10

    CPC classification number: B29C44/22 ,  B29C44/324 ,  B29C47/0023 ,  B29C47/021 ,  B29C47/901 ,  B29C47/908

    Abstract: Procedure for manufacturing a tube of insulating material comprising one or several inner tubes (17), a foamed plastic insulation (18) and a plastic surface layer (16). In the procedure, foaming material is conducted to encircle the inner tube (17), and similarly plastic raw material to form the surface layer (16), and around the inner tube (17) are formed the foamed plastic insulation (18) and the surface layer (16) simultaneously in one work step. The surface layer (16) is cooled to desired dimension in a calibration means (14) in which a calibration pressure is produced by the foaming process, the release of this pressure being prevented by the plug which the foam forms as it solidifies. Control of the calibration pressure is effected by regulating the foam raw material supply and the temperature of the raw material.

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