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    METHOD OF DETERMINING AN ILLUMINATED SURFACE
    1.
    发明公开
    METHOD OF DETERMINING AN ILLUMINATED SURFACE 审中-公开
    方法确定照射面

    公开(公告)号：EP1155284A1

    公开(公告)日：2001-11-21

    申请号：EP00903057.8

    申请日：2000-01-10

    申请人： STFI

    发明人： JOHANSSON, Per-Ake ,  HANSSON, Peter

    IPC分类号： G01B11/24 ,  G01B11/30

    CPC分类号： G01B11/306

    摘要： Method of determining a surface illuminated by incident light. First the intensity (I1(x,y)) of light reflected from the surface is recorded in a first image of the surface. After this, the intensity (I2(x,y)) of light reflected from the surface is recorded in a second image of the surface, taken at a different angle of illumination. Only the diffusely reflected light is recorded. The difference between the recorded intensities of the first and the second images is determined to obtain a representation that emphasises variations in gradient of the surface. This representation is further processed by signal-adapted integration to a topographic description, that is, a height function of the surface.

    DETERMINATION OF GLOSS QUALITY
    2.
    发明公开
    DETERMINATION OF GLOSS QUALITY 失效
    光泽质量的测定

    公开(公告)号：EP1012576A1

    公开(公告)日：2000-06-28

    申请号：EP97906357.5

    申请日：1997-01-29

    申请人： STFI

    发明人： JOHANSSON, Per- ke ,  LINDSTRAND, Mikael

    IPC分类号： G01N21/57

    CPC分类号： G01N21/57

    摘要： A method and apparatus for obtaining a basis on which the gloss quality of a sample surface of a sample, such as a paper sheet, can be determined by illuminating the sample surface and registering the intensity of the reflected light. With the intention of enabling several different types of gloss variation investigations to be made on a sample surface essentially in accordance with known principles of gloss facet approximation, it is proposed, among other things, that the sample surface (80) is exposed in an image registering area (44) by controlled rotary movement of the sample surface through the image registering area or by controlled rotary movement of the image registering area over the sample surface, wherein the intensity of the light reflected from a plurality of spatially well defined part-surfaces of the sample surface is registered several times during this rotary movement while, at the same time, determining the positions of the part-surfaces in the image registering area (44), and in turn the viewing angle, so as to establish what we here define as an image volume which is representative of the registered light intensity as a function of the position of the part-surfaces within the sample surface and of the respective viewing angle.

    摘要翻译： 一种用于获得如下基础的方法和设备：通过照射样本表面并记录反射光的强度，可以确定样本（例如纸张）的样本表面的光泽度质量。 为了基本上根据光泽小平面近似的已知原理在样本表面上进行几种不同类型的光泽变化研究，除其他之外，提出了样本表面（80）暴露在图像中 通过所述样本表面的受控旋转运动通过所述图像配准区域或通过所述图像配准区域在所述样本表面上的受控旋转运动来记录区域（44），其中从多个空间明确限定的部分表面 在该旋转运动期间多次登记样本表面的位置，同时确定图像配准区域（44）中的部分表面的位置并进而确定视角，以便确定我们在此处 根据样品表面内部分表面的位置定义为表示配准光强度的图像体积，o f各视角。

    METHOD OF REDUCING THE ENERGY CONSUMPTION AT THE REFINING OF CELLULOSE-CONTAINING MATERIAL
    6.
    发明公开
    METHOD OF REDUCING THE ENERGY CONSUMPTION AT THE REFINING OF CELLULOSE-CONTAINING MATERIAL 失效
    方法以减少能源消耗在RAFFINAGE纤维素材料。

    公开(公告)号：EP0302075A1

    公开(公告)日：1989-02-08

    申请号：EP87902828.0

    申请日：1987-04-15

    申请人： STFI

    发明人： ENGSTRAND, Per, Ossian ,  HTUN, Myat, Thoung ,  HAMMAR, Lars-Ake ,  PETTERSSON, Rune, Lennart

    IPC分类号： D21B1 ,  D21D1

    CPC分类号： D21B1/16 ,  D21D1/20

    摘要： Le procédé de réduction de la consommation d'énergie lors du raffinage/battage d'un matériau contenant de la cellulose consiste à ajouter un alcali au matériau pour neutraliser les groupes acides liés à la paroi fibreuse. Selon l'invention, la valeur du pH dans la suspension de pulpe est mesurée à la sortie du raffineur, l'alcali est ajouté en une quantité dépendant de la valeur du pH mesuré pour la neutralisation sans excès dans la zone de battage ou immédiatement avant que le matériau n'entre dans ce dernier, en une quantité comprise entre 0,05 et 9 kg/tonne, de préférence entre 0,5 et 5 kg/tonne, plus particulièrement entre 1 et 4 kg/tonne, le calcul étant effectué en kilo de NaOH par tonne de pulpe.

    METHOD FOR THE MANUFACTURING OF MICROFIBRILLATED CELLULOSE
    8.
    发明公开
    METHOD FOR THE MANUFACTURING OF MICROFIBRILLATED CELLULOSE 有权
    用于生产微纤化纤维素

    公开(公告)号：EP1984561A1

    公开(公告)日：2008-10-29

    申请号：EP07709298.9

    申请日：2007-01-31

    申请人： STFI-Packforsk AB

    发明人： LINDSTRÖM, Tom ,  ANKERFORS, Mikael ,  HENRIKSSON, Gunnar

    IPC分类号： D21C9/00 ,  D21H11/20

    CPC分类号： D21C5/005 ,  D21H11/18

    摘要： The present invention provides a method for treatment of chemical pulp for the manufacturing of microfibrillated cellulose comprising the following steps: a) providing a hemicellulose containing pulp, b) refining said pulp in at least one step and treating said pulp with one or more wood degrading enzymes at a relatively low enzyme dosage, and c) homogenizing said pulp thus providing s aid microfibrillated cellulose. According to a second aspect of the invention a microfibrillated cellulose obtainable by the method according to the first aspect is provided . According to a third aspect of the invention, use of said microfibrillated cellulose according to the second aspect in food products, paper products, composite materials, coatings or in rheology modifiers (e.g. drilling muds) is provided .

    DEWATERING APPARATUS
    9.
    发明授权
    DEWATERING APPARATUS 有权
    排水设备

    公开(公告)号：EP1853760B1

    公开(公告)日：2008-10-08

    申请号：EP06716944.1

    申请日：2006-02-27

    申请人： STFI-Packforsk AB

    发明人： NORMAN, Bo ,  HERMANSSON, Lennart

    IPC分类号： D21F1/36 ,  D21F9/00

    CPC分类号： D21F1/483 ,  D21F9/003

    摘要： Dewatering arrangement adapted to use in a twin-wire dewatering section of a paper machine, comprising a rotating forming roll, a head box for supplying stock arranged before the forming roll, a closed loop first wire adapted to, be partly wrapped around the forming roll to a separation line where its contact with the forming roll ceases, and to receive the stock from the head box on its surface not facing the forming roll, a closed loop second wire adapted to be partly wrapped around the forming roll on top of the first wire thereby pressing the stock between itself and the first wire, a first blade, substantially parallel with the forming roll, is arranged to support the lower side of the wire after the separation line of the forming roll and is arranged such that the tip of the blade is directed against the wire transporting direction, The distance from the separation line to the blade is less than 100 mm. By supporting the wire close to the forming roll movement of the first wire is suppressed, thus reducing unwanted effects like sheet damages.

    METHOD FOR SIZING OF PAPER OR PAPERBOARD.
    10.
    发明公开
    METHOD FOR SIZING OF PAPER OR PAPERBOARD. 审中-公开
    法上浆纸或纸板的

    公开(公告)号：EP1543196A1

    公开(公告)日：2005-06-22

    申请号：EP03794409.7

    申请日：2003-09-08

    申请人： STFI, Skogsindustrins Tekniska Forskningsinstitut; AB

    发明人： LINDSTRÖM, Tom

    IPC分类号： D21H21/16 ,  D21C9/00

    CPC分类号： D21H21/16 ,  D21H11/20 ,  D21H17/17

    摘要： The present invention provides, according to a first aspect, a method for internal sizing of paper or paperboard wherein CMC modified cellulose fibres are treated with a synthetic sizing agent, in the presence of an electrolyte whereby the conductivity of the suspension is at least 1.0 mS/cm. The present invention also provides, according to a second aspect, paper or paperboard obtainable by the above method. According to a third aspect of the invention use of paper or paper board according to the second aspect of the invention for the manufacture of liquid board, communication paper, packaging paper, liner or board is provided.