如何进口纸上海原浆纸进口报关公司国际海运

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如何进口纸上海原浆纸进口报关公司国际海运
如何进口纸上海原浆纸进口报关公司国际海运

木浆纸进口报关
机械木浆(MECHANICALWOOD-PULP)亦称磨木浆，是利用机械方法磨解纤维原料制成的纸浆，在造纸工业中占有重要的地位。
它的生产成本低，生产过程简单，成纸的吸墨性强，不透明度高，纸张软而平滑。适宜印刷上的要求。但由于纤维短，非纤维素组份含量高，所以成纸强度低。另外由于木材中的木素和其他非纤维素绝大部分未被除去，用其生产的纸张易变黄发脆，不能长期保存。
机械木浆通常指白色机械木浆和褐色机械木浆两种。白色机械木浆主要用于生产新闻纸，也可配入其他纸浆中抄制书写纸和印刷纸；褐色机械木浆多用于生产包装纸和纸板，特别是工业用纸板。

纸张报关 郭周：（同）

木浆按打浆特性分类，木材纤维大体分为针叶木和阔叶木两大类，在同类树种中，由于植物本身在不同季节的生长速度不同，又分为早材（春材）和晚材（秋材），据此，它们各自的打浆特性是不同的。
针叶木和阔叶木
针叶木和阔叶木对同一种制浆方法所得到的纸浆，阔叶木比针叶木需要打到更高的打浆度时才能取得相近的物理强度。但是阔叶木浆的纤维较短，一般为0.8-1.1毫米。既要提高其打浆度，又要尽量避免过多地切断纤维，因此，阔叶木浆应以较低的打浆比压，较高的打浆浓度进行打浆为宜。针叶木浆的纤维较长，一般在2-3.5毫米，在生产水泥袋纸时，也不宜过多切断纤维，但当用于生产某中薄纸，如打字纸、油封纸等一类纸时，为满足纸的匀度要求，需要将其切断到0.8-1.5毫米。因此在打浆中可根据纸种的要求，来确定打浆的工艺条件。
早材和晚材
纸张报关 郭周：（同）
早材和晚材木浆中，早材和晚材的比例不同，用相同的打浆条件进行打浆，所得到的成浆质量也不同，晚材纤维长，细胞壁厚而且硬，出生壁不易被破坏，打浆时纤维容易遭到切断，吸水润胀和细纤维化比较困难。因此，含晚材比例大的浆，在中等打浆，特别是粘状打浆时，应以较低的比压，较高的浓度，采取逐次落刀或逐次缩小刀距的方法进行打浆。早材纤维壁较薄，纤维柔软，打浆时容易分离成单根纤维，打浆比较容易。
进口负责人：郭周先生 （同）
直线： 邮箱：1140759907@
上海总部地址：上海市浦东新区张杨路3611号金桥商业广场6座906-908
Import of wood pulp paper for customs declaration
Mechanical wood pulp, also known as grinding wood pulp, is a pulp made of mechanical method for grinding the raw material of fiber, and occupies an important position in the paper industry.
Its production cost is low, the production process is simple, the paper has strong ink absorption, high opacity, and the paper is soft and smooth. It is suitable for printing. But because of the short fiber and the high content of the non cellulose components, the paper strength is low. In addition, the wood and other non cellulose in the wood are not removed most of the paper. The paper made of wood is brittle and can not be preserved for a long time.
Mechanical wood pulp usually refers to two kinds of white mechanical wood pulp and brown mechanical wood pulp. White wood pulp is mainly used to produce newsprint, and it can also be used to copy writing paper and printing paper in other pulp. Brown mechanical wood pulp is mostly used for producing wrapping paper and paperboard, especially for industrial paperboard.

Paper declaration of Guo Zhou: (with WeChat)

According to the classification of wood fiber pulp beating characteristics, can be divided into softwood and hardwood two categories in the same species, because the plant itself in different growth rates in different seasons, and is divided into earlywood and latewood (spring wood) (autumn wood), accordingly, their respective characteristics are different beating.
Coniferous and broad leaf wood
Softwood and hardwood are of the same kind of pulping method of pulp, softwood broad-leaved woods need to play to a higher beating degree can be achieved when the physical strength of similar. But the fiber of broad-leaved wood pulp is short, usually 0.8-1.1 millimeter. It is necessary to improve its beating degree and avoid cutting off fiber too much. Therefore, hardwood pulp should be beaten at lower beating pressure and higher beating concentration. Long fiber softwood pulp, generally 2-3.5 mm, in the production of cement bag paper, it is not too much off the fiber, but when used in the production of a tissue, such as typing paper, paper seal such as paper, in order to satisfy the requirement of uniformity of the paper, it needs to be cut to 0.8-1.5 mm. Therefore, the technical conditions of beating can be determined in the beating of the pulp according to the requirements of the paper species.
Earlywood and latewood
Paper declaration of Guo Zhou: (with WeChat)
Early wood and late wood pulp, different earlywood and latewood proportion, beating with the beating of the same conditions, the pulp quality is different, late wood fiber length, cell wall thickness and wall was hard, not easy to be destroyed, making fiber easily cut, swelling and fine fibrosis is difficult. Therefore, with a large proportion of the wood pulp, especially in the middle of beating, beating, should be lower than the pressure, the higher the concentration, adopt the method of successive knife or knife from the beating of successive reduction. The fibrous wall of early wood is thin and the fiber is soft. It is easy to separate into single fiber when beating, and it is easy to beat.
Import leader: Mr. Guo Zhou (with WeChat)
Straight line: mailbox: 1140759907@
Shanghai headquarters address: No. 3611, Zhang Yang Road, Pudong New Area, Shanghai, Shanghai, Jinqiao commercial square, 6 906-908
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如何进口纸上海原浆纸进口报关公司国际海运
如何进口纸上海原浆纸进口报关公司国际海运