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    PRESSURE VESSEL AND METHOD FOR MANUFACTURING PRESSURE VESSEL
    3.
    发明公开
    PRESSURE VESSEL AND METHOD FOR MANUFACTURING PRESSURE VESSEL 审中-公开

    公开(公告)号：EP4261027A1

    公开(公告)日：2023-10-18

    申请号：EP21902987.3

    申请日：2021-10-06

    申请人： MITSUBISHI GAS CHEMICAL COMPANY, INC.

    发明人： MATSUMOTO, Nobuhiko ,  IKEUCHI, Kousuke ,  MITADERA, Jun

    IPC分类号： B29K105/08 ,  B29L22/00 ,  F16J12/00 ,  B29C70/16 ,  B29C70/32

    摘要： Provided are a pressure vessel with excellent gas barrier properties, less likely to cause cracks, and excellent internal pressure fatigue properties, and a production method thereof. The pressure vessel includes a layer at least in the body part, and the layer includes a fiber-reinforced resin material that contains a resin component and a continuous reinforcing fiber. A ratio (inner region/outer region) of the continuous reinforcing fiber content (vol.%) in the inner region to a continuous reinforcing fiver content (vol.%) in the outer region is from 0.80 to 0.99, where the inner region is up to 0.1% from the inner side of the layer in the thickness direction, and the outer region is up to 0.1% from the outer side of the layer in the thickness direction, and the continuous reinforcing fiber content (vol.%) in the central region of the layer, which is between up to more than 0.1% from the inner side in the thickness direction and up to more than 0.1% from the outer side in the thickness direction, is from 40 to 60 vol.%.

    PROCESS FOR INJECTION MOLDING A PREFORM HAVING A GRADATION PATTERN
    9.
    发明公开
    PROCESS FOR INJECTION MOLDING A PREFORM HAVING A GRADATION PATTERN 审中-公开

    公开(公告)号：EP3501787A1

    公开(公告)日：2019-06-26

    申请号：EP19153830.5

    申请日：2006-04-24

    申请人： Yoshino Kogyosho Co., Ltd.

    发明人： ABE, Minoru ,  TAKAHASHI, Tetsuo ,  SUZUKI, Masato ,  SHIMURA, Hiromi ,  CHIBA, Junichi

    IPC分类号： B29C49/22 ,  B29C45/16 ,  B65D1/00 ,  B29K67/00 ,  B29L22/00 ,  B29B11/08 ,  B29C49/06

    摘要： The technical problem to be solved by the invention is to change the thickness of the colored resin layer of the preform gradually in the upward or downward direction, by utilizing a tendency of gradual decrease in the thickness of the colored resin layer caused by the flow of the main resin inside the preform mold when the main resin and the colored resin are injected into the mold. The objects of this invention is to provide a biaxially drawn, blow molded bottle having new decorativeness created in which sophisticated color gradations associated with color density are created in the body of this bottle. The means of accomplishing this object involves adjusting the injection pattern including the time of starting and ending the supply of the main resin and the colored resin, and pressure or velocity profiles, reducing the thickness of the colored resin layer in the multi-layered molten resin fluid gradually at an upstream or downstream point of the flow, injection-molding the preform in which a color-gradated portion associated with the thickness of the colored resin layer has been formed, and biaxially drawing and blow molding this preform into a bottle having a color-gradated portion associated with the color density or color shade created on the body of the bottle.