GAS BARRIER LAMINATE AND PACKAGING MATERIAL INCLUDING THE SAME

    公开(公告)号:US20200331024A1

    公开(公告)日:2020-10-22

    申请号:US16922140

    申请日:2020-07-07

    Abstract: A gas barrier laminate including a resin substrate, a first coating layer containing a carboxylic acid polymer; and a second coating layer containing a polyvalent metal compound and a resin, laminated in this order; a ratio of a thickness of the second coating layer to the first coating layer in the range of 1.0 or more and 4.0 or less; and the second coating layer satisfies at least one of the following: (condition 1) a haze of the second coating layer is 8% or less; (condition 2) a surface roughness Ra of the second coating layer is ½ or less of the thickness of the second coating layer; and (condition 3) the number of concave portions having a diameter of 1.5 μm or more per unit area on a surface of the second coating layer opposite to the first coating layer is 2/0.01 mm2 or less.

    PACKAGE, GAS BARRIER LAMINATE, AND PACKAGING BODY

    公开(公告)号:US20210339926A1

    公开(公告)日:2021-11-04

    申请号:US17377593

    申请日:2021-07-16

    Abstract: A packaging body constituted by a sheet that includes a gas barrier laminate and a sealant; and contents that are accommodated in the packaging body and that contain a sulfur-containing amino acid. The gas barrier laminate comprises: a resin substrate; a first layer containing an inorganic oxide; a second layer containing a carboxylic acid polymer; and a third layer containing a polyvalent metal compound and a resin. The resin substrate, the first layer, the second layer, and the third layer are layered in this order from the outside to the inside of the packaging body. The thickness of the third layer is 0.1 μm or more. The sulfur content of the second layer is 1.0 atm % or less.

    LAMINATE AND METHOD FOR PRODUCING LAMINATE
    4.
    发明申请

    公开(公告)号:US20200346443A1

    公开(公告)日:2020-11-05

    申请号:US16935377

    申请日:2020-07-22

    Abstract: A method for producing a laminate, the method comprising at least a pretreatment step of pretreating a surface of a substrate made of a plastic film by reactive ion etching so that the maximum displacement of the substrate surface measured by local thermal analysis is 300 nm or more, and a lamination step of laminating a thermoplastic resin layer made of a material different from that of the substrate on the pretreated surface of the substrate; wherein the plastic film is a polyethylene terephthalate film.

    GAS BARRIER FILM AND PACKAGING MATERIAL
    5.
    发明申请

    公开(公告)号:US20200255615A1

    公开(公告)日:2020-08-13

    申请号:US16861362

    申请日:2020-04-29

    Abstract: A gas barrier film includes a first base material film made of a plastic material and a coating layer formed on one of surfaces of the first base material film, the coating layer contains a watersoluble polymer and a water-swelling mica, the solid content ratios of the water-swelling mica in 5 a total solid content of the coating layer are within approximate ranges indicated from 20 mass % to 50 mass %, the mean area diameter of the water-swelling mica is within approximate ranges indicated from 0.5 μm to 5 μm, and the thickness of the coating layer is within approximate ranges indicated from 0.1 μm to 1 μm.

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