How far is the bleached sulphate chemical wooden paddle from the village

Preferably greater than 500 meters. In addition, environmental protection measures are essential.

nbkp = non-bleached kraft pulp (unbleached kraft pulp);

swbkp = softwood bleached kraft pulp (bleached softwood kraft pulp).

The unbleached kraft pulp in kraft softwood pulp can be used to make kraft paper, paper bag paper, kraft containerboard and general packaging paper and cardboard.

Sulfate softwood pulp can generally be divided into two types: bleached and unbleached. Bleached kraft pulp is used to make high-grade printing papers, drawing newspapers, offset papers, and writing papers.

1) Bleached kraft softwood pulp is referred to as bleached needle pulp, abbreviated as NBKP. It is a kind of chemical pulp made from coniferous wood, cooking and bleaching by sulfate method. It is the most widely used commercial pulp, according to different conifers, cooking bleaching processes and operating conditions, bleached needle pulp is the "king of pulp", with which almost all paper grades can be produced (except for special varieties).

2) Bleached kraft hardwood pulp is referred to as bleached hardwood pulp, abbreviated as LBKP in English, which is also produced by the sulfate method, but the raw material used is hardwood. It is famous for its "eucalyptus pulp" (i.e. wood pulp) in Brazil, which can be used alone or in combination with bleaching needle pulp to copy a variety of high-grade printing papers, etc.

nbkp=needle bleached kraft pulp；

swbkp = softwood bleached kraft pulp (bleached softwood kraft pulp).

The English word "needle" in Chinese means "needle, needle".

"softwood" is "softwood", both pointer wood and bobbin are bleached kraft softwood pulp, but NBKP is used more often, and SWBKP is difficult to see in the literature.

See if this ** has what you want.

The state stipulates that hazardous chemical warehouses should be at least 1,000 meters away from residential areas.

Glass cardboard, a kind of white cardboard, is currently the whitest paper, with a smooth surface, and is often used in high-end packaging.

Coated paper is made of offset paper or other paper as the base paper, which is coated with a layer of white paste on the base paper and then calendered.

Mirror cardboard is glass cardboard, also known as cast coated paper, and low-weight paper is also called high-gloss coated paper and mirror coated paper.

Its production process is different from ordinary coated paper, that is, the surface of the coated paper first passes through the drying oven, in a semi-dry state through a large-diameter surface like a mirror chrome drying cylinder, the coating in the drying process to replicate the cylinder.

surface, forming a smooth surface.

Its surface is much smoother than that of white card, white card, white board paper is coated and dried, and then through a super calender to achieve a relatively smooth surface.

Glass cards are mostly used in cigarette packs, laminations, medicines, cosmetics packaging, etc.

Whiteboard paper is a kind of cardboard with a white and smooth front and a gray bottom on the back, which is mainly used for single-sided color printing and then made into cartons for packaging. The size of the whiteboard paper is 787mm*1092mm, or other specifications or web paper are produced according to the provisions of the order contract. Because the fiber structure of the whiteboard paper is relatively uniform, the surface layer has the composition of filler and rubber material, and the surface is coated with a certain amount of paint, and after multi-roller calendering treatment, the texture of the cardboard is relatively tight, the thickness is also relatively uniform, the paper surface is generally white and smooth, with more uniform ink absorption, the surface of the powder and hair loss phenomenon is less, the paper is stronger and has a good folding resistance, but its water content is higher, generally about 10%, there is a certain elasticity, which will bring a certain impact on the printing.

The difference between whiteboard paper and coated paper, offset paper, and letterpress paper is that the paper is heavy in grams, and the paper is thicker.

Whiteboard paper is made of batter and each layer of base batter on a multi-screen multi-dryer paper machine or a long screen mixed cardboard machine. The pulp is generally divided into batter (surface layer), two layers, three layers, and four layers, and the fiber ratio of each layer of pulp is different, and the fiber ratio of each layer of pulp is different according to the quality of the paper made.

The first layer is the surface layer pulp, which requires high whiteness and a certain strength, usually using bleached kraft wood pulp or with partial bleached chemical straw pulp and white paper edge waste paper pulp; The second layer is the lining layer, which plays the role of isolating the surface layer and the core layer, and also requires a certain degree of whiteness, usually with 100 mechanical wood pulp or light-colored waste paper pulp; The third layer is the core layer, which mainly plays the role of filling, in order to increase the thickness of the cardboard, improve the stiffness, generally use mixed waste paper pulp or straw pulp, this layer is the thickest, and the cardboard with high quantitative weight is often hung several times in several mesh grooves; The last layer is the bottom layer, which has the function of improving the appearance of the cardboard, improving the strength, and preventing curling, usually with a high rate of pulp or better waste paper pulp as raw materials, and the bottom color of the cardboard is gray, and other bottom colors can also be produced as required.

White cardboard is used for printing business cards, covers, certificates, invitations and packaging and decoration cardboard, white cardboard is flat paper, its size is mainly: 880mm*1230mm, 787mm*1032mm. According to the quality level, white cardboard is divided into A, B, C and so on.

White cardboard is thicker and firmer, and its quantity is larger, with a variety of specifications such as 200 g g m g m2. The tightness of white cardboard is usually not less than g m3, and the whiteness requirements are higher, and the whiteness of A, B, and C is not less than that. In order to prevent swimming, white cardboard requires a large degree of sizing, and the sizing degree of A, B, and C is not less than and.

In order to maintain the flatness of paper products, white cardboard should be thicker and firmer, with higher stiffness and burst resistance, and there are different requirements for different grades and quantitatives of white khaki stiffness, the larger the quantitative, the higher the grade, the greater the stiffness requirements, and the general longitudinal stiffness should not be less than.