White cardboard can be divided into several levels?

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. 0%, 87. 0%, 82. 0%. 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毫米,1。 5 mm and 1. 0mm。 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. 10 - 10. 6 mn ? M, lateral stiffness should not be less than 1. 06 - 5. 30 mN? m。 The surface below we talk about their three burst index and which are need to be aware of. 白卡纸是更厚、更强,其数量大。 其数量是200 g / m2, 220 g / m2, 250 g / m2, 270 g / m2, 300 g / m2, 400 g / m2等等。 白卡纸紧张通常不小于0。 80 g / m3,白度要求较高,A, B, C白度不小于92。 0%, 87. 0%, 82. 0%。 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。 5mm, 1. 5毫米和1。 0毫米,分别。 为了保持水平的纸制品、白卡应该更厚、更强,有较高的刚度和抗破裂,对不同等级和不同数量的白色卡片刚度有不同的需求,数量越大,年级越高,刚性需求就越大,一般垂直刚度不应小于2。 10 - 10. 6 mN? 米,横向刚度不应小于1。 06 - 5. 30 mN? M。 现在我们的 谈论他们的三种破裂指数和应注意什么。 A, B, C third-class burst index is not less than 2 respectively. 00KPa? m2 / g, 1。 60 KPa? M2 / g and 1. 20 KPa? 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 40S。 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. 2 - 1. 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. 破裂指数A、B、C三个不小于2。 00KPa? M2 / g, 1。 60 KPa? M2 / g和1。 20 KPa? 分别M2 / g。 为了保证油墨的均匀分布和论文本身的样子,白卡的平滑度不小于20 - 40S. 此外,白卡纸的表面应光滑,无斑点、条纹等缺陷,无扭曲变形、纸纤维结构应该是统一的,0。 2 - 1. 5平方毫米尘埃不超过28 / m2 ( A, etc. ) ,不超过1。 5平方毫米尘埃。 可以想象,一些白卡纸的要求非常苛刻。 每个人都应该关注它。 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. 白卡纸通常使用漂白木浆为原料,表面和底部与硫酸化学结球果的纸浆,核心与硬木化学机械浆,浆与碳酸钙击败后,硫酸钡等填料,使用AKD中性和沉重的分级,使层压机,和蜡光,裹上一层原料。 根据要求,本文特别压花模式可以生产压花后治疗。 Whitecards特别压花模式不能检查平滑度和白度。 通过纸浆染色,除了白色之外,还可以产生各种颜色的卡纸,除了白之外,其他技术性能符合技术性能的白卡纸。