The characteristics of tissue paper
Tissue paper has been an important part of the papermaking industry for many years. Today, the continuous growth in the production capacity of colored tissue paper is achieved through new technologies that meet the quality of the product. The development of multi-layer pulp box provides the opportunity to use different primary fibers and secondary fibers at the same time in the production of sheet paper and makes the final products multi-functional. In a multi-layer head box, a single layer of paper is usually formed by a combination of two ingredients or three layers of fiber. Tissue paper is produced on a paper machine that has a single large steam heated drying cylinder (yankee dryer) fitted with a hot air hood. The raw material is paper pulp. The yankee cylinder is sprayed with adhesives to make the paper stick. Creping is done by the yankee's doctor blade that is scraping the dry paper off the cylinder surface. The crinkle (creping) is controlled by the strength of the adhesive, geometry of the doctor blade, speed difference between the yankee and final section of the paper machine and paper pulp characteristics.
In addition to the use of multi-layer head box, concentration dilution distribution technology can reduce the quantitative change of paper pages. This technology can easily be used after modification of the existing paper machine. Especially for multiple layers. The quantitative distribution can be reduced from 2.0% to 1% by using the concentration dilution and distribution technique in the head box. Reduce the quantitative fluctuations of the page and produce a uniform sheet of paper.
Crepe paper sheets
Tissue paper is a lightweight paper or, light crepe paper. Tissue can be made both from virgin and recycled paper pulp.
Key properties are: strength, absorbency, basis weight, thickness (bulk), brightness, stretch, appearance and comfort.
Do you know these knowledge points about EVA
EVA is a kind of material that we often see in our lives, but many people are not particularly familiar with EVA. What kind of material is EVA foam? What are the uses of EVA? Next, this article will tell you about EVA. Information.
1. What is EVA material?
EVA is a very common material. It has vinyl acetate monomer in its composition, which improves flexibility and impact resistance, compatibility, and heat tight sealing performance. It has good cushioning, shock resistance, heat insulation and moisture resistance. It is extremely resistant to corrosion and is non-toxic and non-absorbent. Most of the slippers sold in the mall are made of eva foam sheets and rubber. It is a relatively common midsole material. It usually has a strong cushioning function and function, but this material is very slippery, so it is usually mixed with hard rubber. Use.
2. What are the usages of EVA?
EVA has strong water resistance, can close the cell structure, and has strong non-absorbent and moisture-proof properties.
EVA is very resistant to corrosion: corrosion, alkali and acid.
EVA's precision processing: no joints, easy to heat compression, split, paste and other processing.
EVA anti-vibration: high shock resistance and cushioning performance.
The EVA resin is an ethylene-vinyl acetate copolymer, and the content of vinyl acetate (VA) is generally 5% to 40%. Compared with polyethylene, EVA is widely used in foaming shoes due to the introduction of vinyl acetate monomer in the molecular chain, which reduces high crystallinity, improves flexibility, impact resistance, filler compatibility and heat sealing performance. Materials, functional shed film, packaging film, hot melt adhesive, wire and cable and toys. In general, the performance of EVA resins depends primarily on the content of vinyl acetate on the molecular chain.
Regarding the materials of EVA and the use of EVA, through the reading of the article, everyone has already had a certain understanding and understanding of this material of EVA. I hope this chapter can help everyone.
Introduction of Watermarking Technology for Non-woven Fabrics
Watermarking is a common printing technology in printed non-woven felt Market.
Because of its use of water-borne elastomeric paste as a printing medium, it is more common in non woven felt printing, also known as printing. The color paste and water elastomer are mixed in printing. The printing plate can be washed directly with water without chemical solvent. Its characteristics are good dyeing power, strong covering and fastness, water resistance, basically no odor.
The products processed in this way are usually called laminated non-woven bags. The process consists of two steps: first, the traditional gravure printing process is used to print pictures and texts on the film, and then the film with patterns is combined on the non-woven fabric by the film coating process. This process is generally used in large area color pattern printing of non-woven bags. It is characterized by exquisite printing, machine production throughout, short production cycle. In addition, the product has excellent waterproof performance, and the durability of the finished product is better than that of non-woven bags produced by other processes. Thin film has bright and matte two options, matte polishing effect! The disadvantage is that it conflicts with the concept of environmental protection, because the film is difficult to degrade.
What are the key factors affecting the quality of glassine paper
Glassine paper, also known as translucent cellophane, is a kind of paper made by processing the original paper of glassine. It has good internal strength and transparency, so it can be used as the substrate, trademark and laser anti-counterfeiting and other Type of release application. So what factors affect the quality of glassine? The next small series will reveal this answer for everyone in the following.
1, Resistance to permeability
Since the professional glassine paper requires good water and oil resistance, the permeability resistance is a very important factor affecting its quality. Only the strong penetration resistance can better oil resistance and various solvents, so it can be avoided. When the surface is coated with silicone oil, it leads to excessive penetration of silicone oil, which not only saves raw materials, but also ensures better peeling force.
2, Smoothness
The second factor affecting glassine paper is smoothness, because if the surface smoothness of the paper is not enough, it will affect the printing gloss and dot reductibility, so only if the surface of the glassine paper has good smoothness, can it have The flat appearance and the effect of printing on the surface can be improved, and the smooth surface can also save the use of silicone oil.
3, Physical strength
Physical strength is the third important factor affecting glassine paper. Because the high-quality dedicated glassine paper needs to have a high internal strength, in order to be able to withstand the tensile, wet strength and tearing from the outside under normal conditions, so as to ensure that the paper will not be damaged. Therefore, it can be used as a packaging for food and medicine to provide effective protection.
Introduction to PET film
PET film is also known as high temperature resistant polyester film. It has excellent physical properties, chemical properties and dimensional stability, transparency and recyclability. It can be widely used in magnetic recording, photosensitive materials, electronics, electrical insulation, industrial film, packaging decoration, screen protection, optical grade mirror Surface protection and other fields. High temperature resistant polyester film model: FBDW (single matte black) FBSW (double matte black) High temperature polyester film specification Thickness width Roll diameter core diameter 38μm~250μm 500~1080mm 300mm~650mm 76mm(3〞), 152mm (6〞) Note: The width specification can be produced according to actual needs. The film roll has a conventional length equivalent to 3000 m or 6000 of 25 μm.
Usage
With the development of special functional films, new uses of polyester films have emerged. Can be produced into a mobile phone LCD protective film, LCD TV protective film, mobile phone buttons, and so on.
PET film is a relatively comprehensive packaging film. It has good transparency and luster; it has good air tightness and aroma retention; it has moderate moisture resistance and has a low moisture permeability at low temperatures. Metallic PET film has excellent mechanical properties, its toughness is the best among all thermoplastics, tensile strength and impact strength are much higher than general film; and it has good strength and dimensional stability, suitable for secondary processing such as printing and paper bags. The PET film also has excellent heat resistance, cold resistance, and good chemical resistance and oil resistance. However, it is not resistant to strong alkali; it is easy to carry static electricity, and there is no proper antistatic method. Therefore, attention should be paid when packaging powdery articles.
How do I distinguish between copy paper and tissue paper?
In the market, it is often the case that the tissue paper is sold as a copy paper, but the production standard of the two paper is different, and there is a certain difference in price, so how to distinguish the copy paper from the colored tissue paper sheet?
Method one: check its appearance is smooth, exquisite, have uniform transmittance.
Copying paper is a kind of advanced cultural industrial paper which is very difficult to produce, with fine paper, smooth surface and good transmittance. The process of sheet paper is relatively rough, paper is generally one side light and rough side.
Method 2: To check the physical strength and tear of the paper, the higher the transparency and the higher the quality of the paper.
The paper has good transparency, usually covering up to 6-8 layers, still seeing the presence of transparency, and the extremely good card is up to 12 layers. The tissue paper is thin and soft, and has a certain degree of transparency, but is far from the copy paper.
The paper is very similar to the sheet's appearance at a glance, but in fact, the quality of the sheet is poor and the price is less than that of the copy paper, so the customer must polish the eye to avoid unnecessary loss when purchasing the paper.
How to choose the gift box packaging material
As a great courtesy country, China is also an important means of interpersonal communication, attracting people's attention and setting off a boom in the market. Since it is a gift, its packaging design is an important indicator of the quality of gifts. Therefore, more beautiful gift wrapping paper, gift boxes are poured into the market, and the scope of use of gift packaging has also been expanded. It is used for festival gifts, corporate welfare distribution, etc. Gift box products are mostly for collections, boutiques, collections, etc. Regardless of the application, the material of the gift packaging design can not be ignored.
First, the corrugated paper of the gift box
If you want to reflect the high and precious gifts, it is best to use thick materials and high-strength cartons. There are two main types of materials: corrugated and compressed cardboard. In general, Xinpai does not particularly recommend corrugated paper. First of all, gifts are used for gift giving, and of course, it is necessary to make grades. Corrugated is the opposite of the lower-end route.
Second, the wooden material of the gift box
Gift box For wood, of course, the wooden gives a feeling of elegance and simplicity, which can reflect a certain grade. The jewelry box is a good gift for women. However, the state has vigorously proposed that forest sanitation work be put on the agenda. In order to follow the footsteps of Xi, the use of wood grain paper can achieve the effect of solid wood, and it is more convenient to carry.
Third, the paper material of the gift box
For gift packaging, Xinpai strongly recommends wooden materials: environmentally friendly and beautiful, and use different techniques to create different effects according to your needs. For example, high-grade white kraft paper, the paper surface is flexible and rich in texture, using embossing printing, and feels very good to the touch. Art paper, novel and full of fun, the use of hot stamping in the pattern part of the pattern is a sense of high quality, very realistic.
Material selection is one of the important elements that reflect the grade of gift box products. Take the jewelry box, the gift box leather jewelry box generally combines the fashionable design elements, and the taste of the times is filled with a rich modern atmosphere.
