A light weight linerboard for corrugated board

    公开(公告)号:SE543829C2

    公开(公告)日:2021-08-03

    申请号:SE1951507

    申请日:2019-12-19

    Applicant: STORA ENSO OYJ

    Abstract: The invention relates to a method to produce a linerboard exhibiting a high bending resistance and a high compression strength, which in turn provides high resistance to interflute buckling and sagging in a thereof formed corrugated board. This is achieved by the inventive combination of an optimized fiber refining level of the furnish in each layer of the linerboard, the separate formation of the top layer and the use of a multi-layer headbox to form the two-layered ply. In addition, the linerboard made according to the invention provides good printing properties in a thereof produced corrugated board, especially in flexographic printing, without the fluting structure being negatively affected.

    КАРТОН С УЛУЧШЕННЫМ ПРЕДЕЛОМ ПРОЧНОСТИ ПРИ СЖАТИИ

    公开(公告)号:RU2738381C2

    公开(公告)日:2020-12-11

    申请号:RU2018133463

    申请日:2017-03-21

    Applicant: STORA ENSO OYJ

    Abstract: Изобретениеотноситсяк гофрированномуфибровомукартону, имеющемуулучшенныйпределпрочностиприсжатиии улучшеннуюползучестьприсжатии, вчастностиприподверганиисильнымциклическимизменениямвлажности. Разработангофрированныйфибровыйкартон, содержащийцеллюлозныеволокна, которыйимеетпоменьшеймереодинизиндексагеометрическогорастяженияв диапазонеот 32 до 65 Нм/г, индексавязкостиразрушенияв диапазонеот 14 до 24 Джм/кги индексаразрушающегоусилияприсжатиикольцав диапазонеот 5 до 10 Нм/г, измеренныхприОВ 85%; причемцеллюлозныеволокнасодержатсмесьменееизмельченныхволокон, имеющихзначениепоШопперу-Риглеру (ШР) вдиапазонеот 15 до 28, имикрофибриллированныхцеллюлозныхволокон, причемэтасмесьсодержитупомянутуюмикрофибриллированнуюцеллюлозув диапазонеот 1 до 5% помассеотсухогосодержанияцеллюлозныхволокони упомянутыйгофрированныйфибровыйкартонсодержитгидрофобнуюпроклеивающуюдобавку. 2 н. и 6 з.п. ф-лы, 3 табл., 3 пр., 1 ил.

    BOARD WITH IMPROVED COMPRESSION STRENGTH

    公开(公告)号:PH12018502034A1

    公开(公告)日:2019-07-15

    申请号:PH12018502034

    申请日:2018-09-21

    Applicant: STORA ENSO OYJ

    Abstract: A corrugated fiberboard comprising cellulosic fibers, wherein said corrugated fiberboard has at least one of a geometrical tensile index in the range of from 32 to 65 Nm/g, a fracture toughness index in the range of from 4 to 24 Jm/kg, and a ring crush index in the range of from 5 to 10 Nm/g5 measured at relative humidity of 85 pcnt RH; wherein the cellulosic fibers comprises a mixture of less refined fibers having a Schopper-Riegler (SR) value in the range of 15 to 28 and microfibrillated cellulose fibers, wherein mixture comprises said microfibrillated cellulose in a range of from 1 pcnt to 5 pcnt by weight of the dry content of the cellulosic fibers.

    BOARD WITH IMPROVED COMPRESSION STRENGTH

    公开(公告)号:CA3016377A1

    公开(公告)日:2017-09-28

    申请号:CA3016377

    申请日:2017-03-21

    Applicant: STORA ENSO OYJ

    Abstract: A corrugated fiberboard comprising cellulosic fibers, wherein said corrugated fiberboard has at least one of a geometrical tensile index in the range of from 32 to 65 Nm/g, a fracture toughness index in the range of from 4 to 24 Jm/kg, and a ring crush index in the range of from 5 to 10 Nm/g5 measured at relative humidity of 85% RH; wherein the cellulosic fibers comprises a mixture of less refined fibers having a Schopper-Riegler (SR) value in the range of 15 to 28 and microfibrillated cellulose fibers, wherein mixture comprises said microfibrillated cellulose in a range of from 1% to 5% by weight of the dry content of the cellulosic fibers.

    A light weight linerboard for corrugated board

    公开(公告)号:AU2020408287A1

    公开(公告)日:2022-06-30

    申请号:AU2020408287

    申请日:2020-12-11

    Applicant: STORA ENSO OYJ

    Abstract: The invention relates to a method to produce a linerboard exhibiting a high bending resistance and a high compression strength, which in turn provides high resistance to interflute buckling and sagging in a thereof formed corrugated board. This is achieved by the inventive combination of an optimized fiber refining level of the furnish in each layer of the linerboard, the separate formation of the top layer and the use of a multi-layer headbox to form the two-layered ply. In addition, the linerboard made according to the invention provides good printing properties in a thereof produced corrugated board, especially in flexographic printing, without the fluting structure being negatively affected.

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