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    Intermediate laminate product, an expanded laminate structure, and process manufacturing thereof
    3.
    发明授权
    Intermediate laminate product, an expanded laminate structure, and process manufacturing thereof 有权

    公开(公告)号：US10118368B2

    公开(公告)日：2018-11-06

    申请号：US15524061

    申请日：2014-11-04

    申请人： SCA Forest Products AB

    发明人： Kent Malmgren

    IPC分类号： D21H27/10 ,  B32B15/12 ,  D21H19/12 ,  D21H27/32 ,  D21H23/22 ,  C09D103/02 ,  B32B15/20 ,  B32B27/10 ,  B32B27/30 ,  B32B29/00 ,  B65D65/40

    摘要： An intermediate laminate product includes a first paper layer including lignocellulose fibers, and a dry coating layer applied to one surface of the first paper layer, the coating including expandable microspheres having an expansion temperature (TE), at least one polysaccharide, and a plasticizing additive which is capable of forming a thermoplastic blend with the polysaccharide. An expanded laminate structure includes the intermediate laminate product and a second paper layer comprising lignocellulose fibers, which is attached to the dry coating by heat lamination. A liquid packaging board includes the expanded laminate structure and a liquid barrier layer. A process for forming the expanded laminate structure includes applying a second paper layer to the coating of the intermediate product at a second temperature (T2), which is above the expansion temperature (TE) of the microspheres, whereby the microspheres expand, and at which the plasticizing additive causes plasticizing of the polysaccharide, to form a thermoplastic blend.

    Method of preparing a sizing boost additive
    5.
    发明授权
    Method of preparing a sizing boost additive 有权

    公开(公告)号：US11041273B2

    公开(公告)日：2021-06-22

    申请号：US16485617

    申请日：2017-03-15

    申请人： SCA Forest Products AB

    发明人： Anette Bergmark ,  Birgitta Lindberg

    IPC分类号： D21H21/16 ,  D21C11/00 ,  D21H11/04 ,  D21H17/23 ,  D21H17/29 ,  D21H17/33 ,  D21H17/66 ,  D21H23/04

    摘要： A method of preparing a sizing boost additive, includes: I) combining a lignin oil and an aqueous solution of gelatinized cationic polysaccharide to obtain a lignin/polysaccharide blend, wherein the lignin oil is obtained by base catalyzed depolymerization of lignin; and the gelatinized cationic polysaccharide is prepared by cooking dry cationic polysaccharide in water until completely gelatinized; and wherein a weight ratio of lignin oil:polysaccharide in the blend is 1:0.5-2, where the weight of the polysaccharide is the weight of dry polysaccharide added in preparation of the aqueous solution of gelatinized cationic polysaccharide; and the combined weight of lignin and polysaccharide is 1-10 wt-% based on the total weight of the resulting blend; followed by II) mixing the lignin/polysaccharide blend at a temperature of 40-100° C., until the blend has changed color from grey-white to brown.