METHOD FOR PRODUCING EXTRUDED POLYSTYRENE RESIN HEAT-INSULATING FOAM BOARD
    173.
    发明申请
    METHOD FOR PRODUCING EXTRUDED POLYSTYRENE RESIN HEAT-INSULATING FOAM BOARD 审中-公开
    生产挤出聚苯乙烯树脂绝热泡沫板的方法

    公开(公告)号:US20130245142A1

    公开(公告)日:2013-09-19

    申请号:US13789191

    申请日:2013-03-07

    Abstract: A method for producing an extruded heat-insulating foam board having a thickness of 10 to 150 mm, an apparent density of 20 to 50 kg/m3 and a closed cell content of at least 80% by extrusion foaming of a foamable resin melt containing a base resin composed primarily of a polystyrene resin, a physical blowing agent and a flame retardant, wherein 3 to 50 mol % of a hydrofluoroolefin, 30 to 70 mol % of a saturated hydrocarbon having 3 to 5 carbon atoms, and 5 to 50 mol % of water and/or carbon dioxide (where the sum of the contents of the hydrofluoroolefin, saturated hydrocarbon having 3 to 5 carbon atoms, water and/or carbon dioxide is 100 mol %) are used as the physical blowing agent. The extruded polystyrene resin heat-insulating foam board is produced with good extrusion foamability and moldability and has a high expansion ratio, a large thickness, excellent long-term heat-insulating properties and flame retardancy, and good appearance.

    Abstract translation: 一种挤出发泡性树脂熔体的制造方法,其特征在于,所述绝热泡沫板的厚度为10〜150mm,表观密度为20〜50kg / m 3,闭孔含量为80%以上, 主要由聚苯乙烯树脂,物理发泡剂和阻燃剂组成的基础树脂,其中3〜50摩尔%的氢氟烯烃,30〜70摩尔%的碳原子数3〜5的饱和烃和5〜50摩尔% 的水和/或二氧化碳(其中氢氟烯烃,碳原子数3〜5的饱和烃,水和/或二氧化碳的含量之和为100摩尔%)的总和用作物理发泡剂。 挤出聚苯乙烯树脂绝热泡沫板制造具有良好的挤出发泡性和成型性,并且具有高膨胀率,大厚度,优异的长期绝热性和阻燃性,以及良好的外观。

    Extruded, polystyrene-based resin foam plate and method for the production thereof
    174.
    发明申请
    Extruded, polystyrene-based resin foam plate and method for the production thereof 审中-公开
    挤出聚苯乙烯类树脂发泡板及其制造方法

    公开(公告)号:US20030042644A1

    公开(公告)日:2003-03-06

    申请号:US10170725

    申请日:2002-06-14

    Abstract: An extruded, polystyrene-based resin foam plate produced by extruding a foamable molten composition containing a polystyrene-based resin and a blowing agent consisting of (a) isobutane and (b) a blowing agent component other than isobutane, chlorofluorocarbons and fluorocarbons from a high pressure zone into a lower pressure zone. The extruded foam plate has a thickness of at least 10 mm and an apparent density of 25-60 kg/m3 contains residual isobutane in an amount of 0.45-0.80 mol per 1 kg thereof, has cells having an average diameter in the thickness direction thereof of 0.05-0.18 mm and a cell strain rate of 0.7-1.2, wherein the cell strain rate is obtained by dividing the average diameter in the thickness direction of the extruded foam plate by the average diameter in the horizontal direction of the extruded foam plate, meets the flammability standard on extruded polystyrene foam insulation plates as defined in JIS A9511-1995, and has a thermal conductivity of not greater than 0.028 W/mnullK.

    Abstract translation: 挤出的基于聚苯乙烯的树脂发泡板,其通过挤出含有聚苯乙烯类树脂的发泡性熔融组合物和由(a)异丁烷和(b)异丁烷,氯氟烃和碳氟化合物以外的发泡剂组分组成的可发泡熔融组合物 压力区进入低压区。 挤出的泡沫板的厚度为至少10mm,表观密度为25-60kg / m 3,其含有残留的异丁烷,每1kg为0.45-0.80mol,具有其厚度方向的平均直径的细胞 为0.05〜0.18mm,细胞应变率为0.7-1.2,其中细胞应变率通过将挤出泡沫板的厚度方向上的平均直径除以挤出泡沫板的水平方向的平均直径而得到, 符合JIS A9511-1995定义的挤压聚苯乙烯泡沫绝缘板的可燃性标准,导热率不大于0.028 W / mK

    METHOD FOR PRODUCING MOLDED ARTICLE OF THERMOPLASTIC RESIN EXPANDED BEADS

    公开(公告)号:US20250162212A1

    公开(公告)日:2025-05-22

    申请号:US18840104

    申请日:2023-03-10

    Abstract: A method for producing a molded article of thermoplastic resin expanded beads that includes cracking filling and in-mold molding. The expanded beads have a columnar shape and a defective portion that is a through hole and/or a groove. A ratio Ca/A of an average cross-sectional area Ca per defective portion to an average cross-sectional area A of a cut surface of the expanded bead obtained by cutting the expanded bead at a center in an axial direction along a plane perpendicular to the axial direction is 0.01 or more and 0.20 or less, and a ratio Ct/A of a total cross-sectional area Ct of the defective portion to the average cross-sectional area A of the expanded bead is 0.02 or more and 0.20 or less. When the mold is completely closed, a filling rate F of the expanded beads is 125% or more and 220% or less.

    METHOD FOR PRODUCING MOLDED ARTICLE OF THERMOPLASTIC RESIN EXPANDED BEADS

    公开(公告)号:US20250162206A1

    公开(公告)日:2025-05-22

    申请号:US18841513

    申请日:2023-03-10

    Abstract: A method for producing a molded article of thermoplastic resin expanded beads includes a cracking filling step and an in-mold molding step. Expanded beads to be used in the cracking filling step each have a columnar shape and each have one or more defective portions of one or two kinds, the defective portions being selected from the group consisting of through holes and grooves. A molding cavity of a mold has a first portion having a length in an opening/closing direction of the mold greater than an average length LA and a second portion shorter than the average length LA. In the cracking filling step, a difference P2max−P1min between a minimum value P1min of the compression rate of the first portion and a maximum value P2max of the compression rate of the second portion is 5% or more and 100% or less.

    INORGANIC FOAM
    177.
    发明申请

    公开(公告)号:US20250154073A1

    公开(公告)日:2025-05-15

    申请号:US18724429

    申请日:2022-12-23

    Abstract: An inorganic foam comprising an inorganic polymer having leucite crystal structure as a base material, the area of the peak derived from leucite crystal in the X-ray diffraction spectrum of the inorganic foam satisfies the following formula (1): D(geo)/D(pur)≥0.5 (1). In formula (1), D(geo) represents the area of the peak located at 2θ=27.3° derived from leucite crystal in the X-ray diffraction spectrum of the inorganic foam, and D(pur) represents the area of the peak located at 2θ=27.3° derived from leucite crystal in the X-ray diffraction spectrum of leucite pure material.

    Method for producing polypropylene-based resin expanded beads and polypropylene-based resin expanded beads

    公开(公告)号:US12275831B2

    公开(公告)日:2025-04-15

    申请号:US18278660

    申请日:2021-12-21

    Abstract: A method for producing polypropylene-based resin expanded beads includes dispersion, blowing agent impregnation, and foaming steps. Beads used in the dispersion step include a core layer having a polypropylene-based resin as a base material resin, and a fusion-bonding layer covering core layer; the beads fusion-bonding layer includes carbon black and a NOR-type hindered amine; a carbon black blending ratio is adjusted to 0.5 wt % or more and 5 wt % or less; and an amine blending ratio of the beads is adjusted to 0.03 wt % or more and 0.5 wt % or less; the polypropylene-based resin expanded beads have a surface on which a fusion-bonding layer is located; the fusion-bonding layer includes the carbon black and hindered amine; a carbon black blending ratio is 0.5 wt % or more and 5 wt % or less; and a blending ratio of the hindered amine is 0.03 wt % or more and 0.5 wt % or less.

    METHOD FOR PRODUCING POLYAMIDE-BASED RESIN EXPANDED BEADS AND METHOD FOR PRODUCING POLYAMIDE-BASED RESIN EXPANDED MOLDED ARTICLE

    公开(公告)号:US20250043091A1

    公开(公告)日:2025-02-06

    申请号:US18782655

    申请日:2024-07-24

    Inventor: Tatsuya HAYASHI

    Abstract: A polyamide-based resin melt obtained by melt-kneading a base resin, an organic compound-based additive (A), and an iodide-based additive (X) is granulated to prepare polyamide-based resin particles. The polyamide-based resin particles are expanded by using a physical blowing agent to produce polyamide-based resin expanded beads. The polyamide-based resin expanded beads are in-mold molded to produce a polyamide-based resin expanded molded article. The organic compound-based additive (A) is made of a hindered phenol-based compound and/or an organophosphorus-based compound. The iodide-based additive (X) is made of copper iodide, or copper iodide and potassium iodide.

    METHOD FOR PRODUCING POLYPROPYLENE-BASED RESIN EXPANDED BEADS AND MOLDED ARTICLE OF POLYPROPYLENE-BASED RESIN EXPANDED BEADS

    公开(公告)号:US20240400782A1

    公开(公告)日:2024-12-05

    申请号:US18699674

    申请日:2022-09-28

    Abstract: A method for producing polypropylene-based resin expanded beads each having a through-hole by performing a first expanding step and a second expanding step is provided. In the first expanding step, tubular resin particles containing carbon black and having through-holes are dispersed in a dispersion medium and released to an environment under a low pressure, thereby obtaining first-step expanded beads having a bulk ratio of M1 times. In the second expanding step, the first-step expanded beads are further expanded to obtain polypropylene-based resin expanded beads having a bulk ratio of M2 times. The bulk ratio M1 is 5 times or more and 25 times or less. A ratio M2/M1 of the bulk ratio M2 to the bulk ratio M1 is 1.2 or more and 3.0 or less.

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