NEWS_NEWS_Ruxu group

01-11 

Glassine paper

Glassine Silicone Paper, the base paper is Glassine, which has the functions of high temperature resistance, moisture resistance, and oil resistance. It is generally used in food, medicine, label, electronic die cutting and other industries. The bottom paper is dense and uniform, with good internal strength and light transmittance. As a well-known privately-owned glassine paper manufacturer in China, Xinfeng produces more than 3,000 tons of various types of glassine paper per month;

07-17 

Features and uses of single-layer PET protective film

The single-layer PET protective film is made of polyester film (PET) as the base material, polyethylene terephthalate as the raw material, made into thick sheets by extrusion, and then made by biaxial stretching; Coated with silica gel water on one side to form a single-layer PET protective film.

07-18 

Die cutting and the application of PE protective film in material

Surface materials can be basically divided into two categories: paper and film. It is simple that the cutting affair of paper is slightly different from that of film materials. Although theoretically speaking, PE protective film manufacturers must cut through the surface material and adhesive together when die-cutting, but theoretically die-cutting paper materials is the combined result of tool cutting and paper fracture, that is, the cutting edge is cutting downwards. The paper is also squeezed to both sides, so, relatively speaking, the die-cutting accuracy of paper-like materials is not very high. When analyzing samples, we often see some labels with burrs. This is due to the fact that the material is relatively thick and naturally broken.

01-11 

Application of anti-counterfeiting paper products

Among the various anti-counterfeiting technologies currently used, such as digital anti-counterfeiting, ink anti-counterfeiting, and optical anti-counterfeiting, paper anti-counterfeiting methods are relatively simple and applicable, and are gradually favored by many manufacturers, providing a broad market for anti-counterfeiting paper products.

01-11 

Use of copy paper

Smooth is a high-end printing paper. Most domestic paper mills use imported Russian wood pulp to make copy paper, and bleached softwood kraft pulp is the best wood pulp. {In addition to imported wood pulp, bamboo pulp, awn stalk pulp, and wheat straw pulp can also be used. Among them, the copy paper produced by bamboo pulp has good strength, but the whiteness of the paper is low; ｝Shenzhen Haoshen Paper chooses the copy paper produced by "imported Russian wood pulp", which has good flexibility, high whiteness and strong transparency. The best copy paper on the market.

01-11 

Basic knowledge of paper industry

1. What are the raw materials of modern papermaking? Answer: The raw materials of modern papermaking include plant fibers (wood, bamboo, grass, etc.), mineral fibers (asbestos, glass fiber, etc.), other fibers (nylon, metal wire, etc.), and polymer materials obtained by cracking petroleum. At present, the paper used for writing, printing and packaging is still mainly made of plant fibers. 2. What are the types of plant fiber raw materials for papermaking? Answer: At present, the plant fiber raw materials used in the paper industry can be divided into two categories: Wood fiber raw materials: plant fibers obtained directly from trees. Non-wood fiber raw materials: divided into grass fiber raw materials, bast fiber materials and seed hair fiber materials. 3. What are the composition and functions of commonly used auxiliary materials for paper? Answer: Auxiliary materials refer to various additives added to paper to meet the different performance of paper. The auxiliary materials are composed of fillers, rubber materials, pigments and other chemical additives. Fillers can improve the smoothness and opacity of paper; sizing materials can make paper have water resistance; pigments can increase the whiteness of paper; dyes can color paper; other chemical additives can change the properties of paper to provide Some special uses of paper. 4. What is the role of rubber? Answer: Paper produced from plant fibers can absorb water or other liquids because of the large number of pores between the fibers themselves and the fibers, and the cellulose and hemicellulose that make up the fibers contain a large amount of hydrophilic hydroxyl groups. In order to prevent the paper from being infiltrated by water or other liquids, it is necessary to add liquid-resistant colloidal substances or film-forming substances, that is, sizing materials, to the paper to provide the paper with resistance to liquid penetration and diffusion. The process of applying size in the paper industry is called sizing. 5. What are the methods of sizing? Answer: According to different sizing effects, sizing methods are divided into internal sizing and surface sizing. Internal sizing is to add sizing material into paper pulp, and then make it into liquid-repellent paper and cardboard. Commonly used rubbers include rosin rubber and synthetic rubber. Surface sizing is to coat a thin layer of sizing material on the surface of the paper to make the paper hydrophobic. Commonly used rubbers include starch, animal glue, and synthetic rubber. Surface sizing is mainly used for offset paper, writing paper, and packaging paper and cardboard that require liquid repellency. 6. What are the effects of surface sizing on the performance of printing paper? Answer: ①Increase the water resistance and surface strength of the paper, which can reduce the lint of the paper in offset printing; ②Improve the printability. If the surface sizing material is too small, the paper will absorb too much binder in the ink during printing, resulting in The blot is dull. On the contrary, if the surface sizing material is too much, it will slow down the drying rate of the ink, resulting in smearing and bright stains; ③Increase the erasability of the paper, surface sizing can reduce the penetration of ink, so it is easy to wipe off the ink and increase The abrasion resistance of the paper surface; ④Increase the strength of the paper, such as bursting resistance, folding resistance and tensile strength; ⑤Reduce the difference and deformation of the paper. 7. What is the role of filler? Answer: The filler is used to make the paper obtain specific properties, such as whiteness, opacity, smoothness, etc. At the same time, the addition of fillers makes the internal voids of the paper smaller and finer, thereby increasing the ink absorption of the paper and making the ink absorption change uniform. Usually added to the water-insoluble or slightly water-soluble minerals in the slurry, the content in the printing paper is about 10%-25%, and the amount of addition of different papers is different, and may vary greatly 8. What are the characteristics of printing paper fillers? Answer: The filler for printing paper should have high whiteness, high refractive index, fine particles, low water solubility, low density and good chemical stability. In addition, it is best to have abundant resources and low price. 9. What are the commonly used fillers for printing paper? Answer: The most commonly used inorganic fillers are talc, clay, titanium dioxide and calcium carbonate. Among them, titanium dioxide is an expensive and high-quality filler; organic synthetic fillers are some polymer substances. 10. What are the effects of fillers on the performance of printing paper? Answer: Adding fillers to printing paper can improve the printability of the paper, such as increasing the whiteness, smoothness, opacity and stiffness of the paper. Improve the affinity, softness and stability of paper to ink, thereby contribu