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    EXTRUDED POLYOLEFIN RESIN FOAM
    1.
    发明申请
    EXTRUDED POLYOLEFIN RESIN FOAM 审中-公开
    挤出聚烯烃树脂泡沫

    公开(公告)号：WO0218482A9

    公开(公告)日：2002-05-16

    申请号：PCT/JP0107310

    申请日：2001-08-27

    Applicant: JSP CORP ,  TAKAHASHI SEIJI ,  KOGURE NAOCHIKA ,  KITAHAMA TAKASHI

    Inventor： TAKAHASHI SEIJI ,  KOGURE NAOCHIKA ,  KITAHAMA TAKASHI

    IPC: C08J9/00

    CPC classification number: C08J9/0061 ,  C08J2201/03 ,  C08J2203/14 ,  C08J2205/05 ,  C08J2323/02 ,  C08J2423/00

    Abstract: The present invention provides thick extruded foam which is extruded polyolefin resin foam having open cells, used for cushion material and packaging material and the like, which exhibits uniform physical product properties, high expansion ratio, and uniform cell diameter.The extruded open cell foam of the present invention is an extruded foam exhibiting an open cell foaming ratio of 50% or greater, the base resin whereof is principally composed of a mixed polymer consisting of 4.5 to 75 parts by weight of component A consisting of an ethylene ionomer resin, 0.5 to 30 parts by weight of component B consisting of a polyolefin resin having a melting point exceeding 120°C, and 20 to 95 parts by weight of component C consisting of one or two or more polymers selected from a group of ethylene-propylene rubbers, styrene elastomers, and polyethylene resins having melting points of 120°C or lower (where component A + component B + component C = 100 parts by weight). Various kinds of additives such as anti-shrinking agents can be mixed in this extruded foam.

    Abstract translation: 本发明提供一种厚挤塑泡沫体，它是具有开孔的挤塑聚烯烃树脂泡沫体，用于缓冲材料和包装材料等，它具有均匀的物理性能，高膨胀率和均匀的泡孔直径。 本发明是具有50％或更高的开孔发泡率的​​挤出泡沫，其基础树脂主要由混合聚合物组成，所述混合聚合物由4.5至75重量份的由乙烯离聚物树脂组成的组分A，0.5至 30重量份的由熔点超过120℃的聚烯烃树脂组成的B组分和20-95重量份的由一种或两种或多种选自乙烯 - 丙烯橡胶，苯乙烯 弹性体和熔点为120℃或更低（其中组分A +组分B +组分C = 100重量份）的聚乙烯树脂。 各种添加剂如抗收缩剂可以在这种挤出泡沫中混合。

    2.
    发明专利
    未知

    公开(公告)号：DE60023409D1

    公开(公告)日：2005-12-01

    申请号：DE60023409

    申请日：2000-08-03

    Applicant: JSP CORP

    Inventor： KOGURE NAOCHIKA ,  GOKURAKU HIROYUKI

    IPC: B32B27/00 ,  B29C44/04 ,  B29C47/04 ,  B29C49/04 ,  B29C49/22 ,  B29C49/48 ,  B29L9/00 ,  B29L22/00 ,  B32B5/18 ,  B32B27/32 ,  B29C44/06

    Abstract: Disclosed herein is a multi-layer expansion-molded article (1) of a polypropylene resin, which is obtained by molding a multi-layer parison comprising a foamed resin layer (12) and a resin layer (13) provided on the outer side of the foamed resin layer (12) in a mold in such manner that at least part of the opposed inner surfaces of foamed resin layer in the parison are fusion-bonded to each other, and has a polypropylene resin layer (13) on the surface of a foamed polypropylene resin layer (12), wherein a melt tension, MT (gf) and a melt flow rate, MFR (g/10 min) obtained by measurement to a polypropylene resin forming the foamed resin layer (12) in the expansion-molded article satisfy the following relationship (1), and a melt tension, MT (gf) and a melt flow rate, MFR (g/10 min) obtained by measurement to a polypropylene resin forming the resin layer (13) on the surface of the foamed resin layer (12) satisfy the following relationship (2) when the melt flow rate, MFR is at least 0.3 (g/10 min), or the melt tension, MT is at least 10 (gf) when the melt flow rate, MFR is not lower than 0.2 (g/10 min), but lower than 0.3 (g/10 min): log MT > -0.74 log MFR + 0.66 log MT > -1.02 log MFR + 0.47

    Blow-molded foam and process for producing the same
    5.
    发明专利
    Blow-molded foam and process for producing the same 未知

    公开(公告)号：AU1262299A

    公开(公告)日：1999-06-16

    申请号：AU1262299

    申请日：1998-11-27

    Applicant: JSP CORP

    Inventor： GOKURAKU HIROYUKI ,  KOGURE NAOCHIKA ,  KITAHAMA TAKASHI

    IPC: B29C49/04 ,  B29C49/22

    Abstract: A molten resin mixed with a foaming agent by means of an extruder is extruded to form a cylindrical foamed parison, and the parison is placed in a mold and blow-molded to obtain a hollow blow-molded foam. In this case, where a polypropylene resin is used as a base resin, there could not be obtained a molded foam having a high expansion ratio and a large wall thickness. In the present invention, for the production of a blow-molded foam, there is used a base resin which is mainly composed of a polypropylene resin and has, at 230 DEG C, a melt tension (MT) of 10 gf or over and a melt flow rate (MFR) of 0.5 g/10 minutes or over. A foaming agent is added to the base resin, followed by melt kneading by means of an extruder under high temperature and high pressure conditions to provide a foamable melt. This melt is subjected to extrusion from a circular die 5 and expanded to form a cylindrical foamed parison 4. Thereafter, molds 6,6 are clamped, and the parison 4 in a softened condition is placed in the molds 6, 6, and a pressurized gas is blown into the parison 4 from a gas blowing port 7 for blow molding in the form of a hollow shape conforming to the mold profile to produce a blow-molded foam.

    BLOW-MOLDED FOAM AND PROCESS FOR PRODUCING THE SAME
    7.
    发明公开
    BLOW-MOLDED FOAM AND PROCESS FOR PRODUCING THE SAME 有权
    BLASGEFORMTER SCHAUM UND VERFAHREN ZU DESSEN HERSTELLUNG

    公开(公告)号：EP1072389A4

    公开(公告)日：2001-01-31

    申请号：EP98955975

    申请日：1998-11-27

    Applicant: JSP CORP

    Inventor： GOKURAKU HIROYUKI ,  KOGURE NAOCHIKA ,  KITAHAMA TAKASHI

    IPC: B29C49/04 ,  B29C49/22

    CPC classification number: B29C49/04 ,  B29C49/22 ,  B29K2105/04 ,  Y10T428/249981 ,  Y10T428/249987 ,  Y10T428/249988 ,  Y10T428/249991 ,  Y10T428/249992

    Abstract: A molten resin mixed with a foaming agent by means of an extruder is extruded to form a cylindrical foamed parison, and the parison is placed in a mold and blow-molded to obtain a hollow blow-molded foam. In this case, where a polypropylene resin is used as a base resin, there could not be obtained a molded foam having a high expansion ratio and a large wall thickness. In the present invention, for the production of a blow-molded foam, there is used a base resin which is mainly composed of a polypropylene resin and has, at 230 DEG C, a melt tension (MT) of 10 gf or over and a melt flow rate (MFR) of 0.5 g/10 minutes or over. A foaming agent is added to the base resin, followed by melt kneading by means of an extruder under high temperature and high pressure conditions to provide a foamable melt. This melt is subjected to extrusion from a circular die 5 and expanded to form a cylindrical foamed parison 4. Thereafter, molds 6,6 are clamped, and the parison 4 in a softened condition is placed in the molds 6, 6, and a pressurized gas is blown into the parison 4 from a gas blowing port 7 for blow molding in the form of a hollow shape conforming to the mold profile to produce a blow-molded foam.

    Abstract translation: 中空吹塑泡沫塑料通过用挤出机挤出含有发泡剂的熔融树脂而获得，以形成圆柱形发泡型坯并将该型坯置于模具中以进行吹塑。 然而，当使用的基础树脂是聚丙烯树脂时，上述方法不能提供具有高发泡率和大壁厚的模塑制品。 本发明的方法使用主要由聚丙烯树脂组成的基础树脂，其在230℃的熔体张力（MT）为10gf或更高，熔体流动速率（MFR）为0.5g / 10min或更高。 该方法包括向基体树脂中加入发泡剂，用挤出机在高温和高压下熔融捏合该混合物，得到可发泡熔体，通过环形模具（5）挤出熔体并使其发泡以形成圆柱体 随后关闭模具（6,6）以将软质型坯（4）保持在模具中，然后将来自吹气喷嘴（7）的加压空气吹入型坯（4）以吹塑模具 成符合模具的中空形状。

    10.
    发明专利
    未知

    公开(公告)号：AT307716T

    公开(公告)日：2005-11-15

    申请号：AT00116199

    申请日：2000-08-03

    Applicant: JSP CORP

    Inventor： KOGURE NAOCHIKA ,  GOKURAKU HIROYUKI

    IPC: B32B27/00 ,  B29C44/04 ,  B29C47/04 ,  B29C49/04 ,  B29C49/22 ,  B29C49/48 ,  B29L9/00 ,  B29L22/00 ,  B32B5/18 ,  B32B27/32 ,  B29C44/06

    Abstract: Disclosed herein is a multi-layer expansion-molded article (1) of a polypropylene resin, which is obtained by molding a multi-layer parison comprising a foamed resin layer (12) and a resin layer (13) provided on the outer side of the foamed resin layer (12) in a mold in such manner that at least part of the opposed inner surfaces of foamed resin layer in the parison are fusion-bonded to each other, and has a polypropylene resin layer (13) on the surface of a foamed polypropylene resin layer (12), wherein a melt tension, MT (gf) and a melt flow rate, MFR (g/10 min) obtained by measurement to a polypropylene resin forming the foamed resin layer (12) in the expansion-molded article satisfy the following relationship (1), and a melt tension, MT (gf) and a melt flow rate, MFR (g/10 min) obtained by measurement to a polypropylene resin forming the resin layer (13) on the surface of the foamed resin layer (12) satisfy the following relationship (2) when the melt flow rate, MFR is at least 0.3 (g/10 min), or the melt tension, MT is at least 10 (gf) when the melt flow rate, MFR is not lower than 0.2 (g/10 min), but lower than 0.3 (g/10 min): log MT > -0.74 log MFR + 0.66 log MT > -1.02 log MFR + 0.47

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