White cardboard can be divided into several levels?
by：NEW BAMBOO PAPER2020-04-03
White cardboard, White cardboard White cardboard is used for printing business card, envelope, invitation to certificate, packing and decoration paper, White cardboard on a tablet of paper, mainly for its size: 880 mm * 1230 mm, 787 mm * 1032 mm.
According to the quality level of white cardboard are divided into three grades A, B, C.
白卡纸是用于印刷名片,封面,证书,邀请和包装装饰卡片纸、白卡纸平板纸,它的大小是:880毫米* 1230毫米,787毫米* 1032毫米。
根据质量水平,白卡纸分为A, B, C三等等。
White cardboard is relatively thick strong, quantitative is bigger, its quantitative 200 g/m2, 220 g/m2, 250 g/m2, 270 g/m2, 300 g/m2, 400 g/m2, and other specifications.
White cardboard tightness is usually not less than zero.
80 g/m3, whiteness demand is higher, A, B, C three classes of whiteness is not less than 92 respectively.
To prevent scouts, white cardboard requires A larger degree of sizing, A, B, C third-class sizing degree of not less than 1, respectively.
5 mm and 1.
In order to keep the paper flat, white cardboard should be relatively thick strong, had a higher stiffness and resistance to break, for different grades of different quantitative white khaki have different requirements, the stiffness of the quantitative, the greater the level is higher, the greater the stiffness requirement, general longitudinal stiffness should not be less than 2.
6 mn ?
M, lateral stiffness should not be less than 1.
The surface below we talk about their three burst index and which are need to be aware of.
其数量是200 g / m2, 220 g / m2, 250 g / m2, 270 g / m2, 300 g / m2, 400 g / m2等等。
80 g / m3,白度要求较高,A, B, C白度不小于92。
为了防止游泳,白卡纸需要更大程度的分级,a, B, C级大小不小于1。
A, B, C third-class burst index is not less than 2 respectively.
m2 / g, 1。
M2 / g and 1.
m2 / g。
In order to ensure the printing ink uniform distribution and the appearance of the paper itself, the smoothness of not less than 20 - white card
In addition, white cardboard paper should level off, do not have spots and streaks of paper, do not allow the buckling deformation, paper fibre should be uniform, 0.
5 the dust was not more than 28 / m2 (
A, etc. )
, no more than 1.
5 was of the dust.
It is conceivable that some of white cardboard is very demanding.
You should pay attention to.
M2 / g, 1。
M2 / g和1。
分别M2 / g。
5平方毫米尘埃不超过28 / m2 (
White cardboard used bleaching wood pulp as raw material, the surface layer, the underlying chemical coniferous wood pulp, sulphate core layer USES the hardwood chemical mechanical pulp, pulp after beating add calcium carbonate, barium sulfate, such as packing, using AKD neutral heavy sizing, manufacture paper with pulp on the pile of paper machine net, and the calender, coating processing and become, according to the needs, through embossing processing can produce with special embossed pattern of paperboard, all with special embossed pattern of white cardboard, don't check the smoothness and whiteness.
Besides white, through to the pulp dyeing, also can produce all kinds of color card, then in addition to the whiteness, other technical performance in line with the technical characteristics of the white cardboard.