Label is used to show the relevant instructions of the product of the printed matter, some are on the back of the glue, but there are some printed matter is not with glue, glue label is known as "self-adhesive label". Self-adhesive label is a kind of material, also called self-adhesive material. It is a composite material made of paper, film or other special materials, coated with adhesive on the back and coated with silicon protective paper as the base paper. Self-adhesive is a general term for materials with such properties. The market demand for high-grade labels is increasing day by day, domestic has been able to process all kinds of high-grade labels, previously processed in overseas labels have gradually turned into domestic production, which is also one of the main reasons for the rapid development of domestic label printing. Application of self-adhesive labels As a form of packaging to achieve appearance and specific functions, self-adhesive labels can be flexibly applied in all walks of life. At present, the label in the pharmaceutical industry, supermarket logistics industry, electronics industry, lubricating oil, tire industry, daily chemical, food, clothing and other industries have superior application! Self-adhesive labels are roughly divided into two kinds: one is the paper self-adhesive label, the other is the film self-adhesive label. 1.Paper self-adhesive labels are mainly used in liquid washing products and popular personal care products; Thin film materials are mainly used in high - grade daily chemical products. At present, popular personal care products and household liquid washing products occupy a large proportion in the market, so the corresponding paper materials are used more. 2.Film self-adhesive labels are commonly used in PE, PP, PVC and some other synthetic materials. The film materials are mainly white, matte and transparent. Because the printing adaptability of thin film material is not very good, it is generally treated with corona or by adding coating on its surface to enhance its printing adaptability. In order to avoid the deformation or tear of some film materials in the printing and labeling process, some of the materials will be subjected to directional processing, one-way stretching or two-way stretching. For example, BOPP materials with two-way stretching are widely used. The structure of the sticker In the usual sense, we call the structure of self-adhesive label "sandwich" structure: surface material, glue (adhesive), the bottom paper, the three layers of structure is the basic structure, but also we can see the naked eye. In fact, many materials may be divided into more detailed, for example, some film surface and coating, easy to print, some materials and glue between the coating, easy to material and glue full combination and so on. The production process of self-adhesive label Simply put, the production process of self-adhesive label materials is completed by coating and composite two processes. The...

Sixteen common types of self-adhesive labels This paper introduces sixteen types of self-adhesive labels commonly seen in daily life. The specific types of self-adhesive labels are as follows： 1. Press smooth writing paper and offset paper labels Multi-purpose label paper for information labels, bar code printing labels, especially suitable for high speed laser printing, also suitable for inkjet printing. 2. Coated paper adhesive label Multi-color product label general label paper, suitable for medicine, food, edible oil, wine, beverage, electrical appliances, cultural articles information label. 3. Mirror coated paper sticker label High gloss label paper for the label of advanced multi-color products, suitable for the information label of medicine, food, edible oil, wine, beverage, electrical appliances and cultural articles. 4. Aluminum foil adhesive label Multi - color product label generaltag paper, suitable for medicine, food, cultural goods high-grade information label. 5. Laser film adhesive label Multi - color product label generallabelled paper, suitable for cultural articles, decorations of high-grade information label. 6. Fragile paper self-adhesive label It is used for anti-counterfeiting sealing of electrical appliances, mobile phones, medicines, food, etc. After stripping the self-adhesive sealing, the label paper is broken on the horse and cannot be reused. 7. Heat-sensitive paper sticker label Suitable for information labels such as price marks and other retail uses 8. Heat transfer paper adhesive label Suitable for microwave oven, scale machine and computer printer to print labels 9. The adhesive sticker can be removed Surface materials are coated paper, mirror coated paper, PE (polyethylene), PP (polypropylene), PET (polypropylene) and other materials. Especially suitable for tableware, household appliances, fruit and other information labels. After stripping the sticker label, the product leaves no traces. 10. Washable adhesive label Surface materials are coated paper, mirror coated paper, PE (polyethylene), PP (polypropylene), PET (polypropylene) and other materials. Especially suitable for beer labels, tableware supplies, fruit and other information labels. After water washing, the product leaves no adhesive traces. 11. PE (polyethylene) sticker The fabric has transparent, bright opalescent, matte opalescent. Resistance to water, oil and chemicals and other important properties of the product label, for toilet supplies, cosmetics and other extrusion packaging, information label. 12. PP (polypropylene) self-adhesive label The fabric has transparent, bright opalescent, matte opalescent Resistance to water, oil and chemicals and other important performance of the product label, for toilet supplies and cosmetics, suitable for heat transfer printing information label. 13. PET (polypropylene) adhesive label The fabrics are transparent, bright gold, bright si...

Water-based single-component protective film adhesive is an environmentally friendly adhesive prepared by using natural polymer or synthetic polymer as adhesive and water as solvent or dispersant instead of toxic organic solvents that pollute the environment.Existing water-based adhesives are not 100% solvent-free and may contain limited volatile organic compounds as additives to their water-based media in order to control viscosity or fluidity. The advantages are mainly non-toxic, no pollution, no combustion, safe use, easy to achieve clean production technology, etc., disadvantages include slow drying speed, poor water resistance, poor frost resistance. Classified by materials Polyvinyl alcohol water-based adhesives, vinyl acetate water-based adhesives, acrylic acid water-based adhesives, polyurethane water-based adhesives, epoxy water-based adhesives, phenolic water-based adhesives, silicone water-based adhesives, rubber water-based adhesives. Classified by application Water-based adhesive for construction, water-based single-component protective film adhesive for packaging, water-based adhesive for automobile, water-based adhesive for shoemaking, water-based adhesive for daily use. According to the solvent classification of water-soluble and emulsion adhesive properties and modification. The APU is a new type of polyurethane system with water instead of organic solvents as a decentralized medium. It is also called water -decentralized polyurethane, water polyurethane or water -based polyurethane.Water -based polyurethane uses water as a solvent, pollution -free, safe and reliable, excellent mechanical properties, good compatibility, and easy modification. The APU adhesive is non -toxic and pollution, and the polymer volume allows it to form an excellent viscosity that has excellent performance. It has the advantages of low temperature resistance, flexibility, good adhesion performance, and wide gelatin material. The chain shows excellent impact resistance, fatigue, low temperature resistance, and designability of performance. The adhesive layer can meet the adhesion needs between different materials from flexibility to rigidity;At present, the synthesis method of water -based polyurethane adhesive has matured, mainly in the following methods: (1)Part of the hydrophilic group in the polyurethane resin structure to make it self -emulsified. (2)Acetone method: water-based single-component protective film adhesive is prepared with high viscosity prepolymer first, and then acetone is added to reduce the viscosity, and then hydrophilic monomer chain expansion is added to water under high speed stirring, through strong shear action to disperse it in water, emulsification after decompressive distillation recovery solvent is prepared PU water dispersion system. (3)End-sealing isocyanate method: select appropriate sealer, protect the end-NCO group of water-sensitive isocyanate, make it inactivated, and then add chain extender and crosslinking agent co-...

The appearance of non-stick pan provides conditions for healthy cooking with less oil, and also makes cooking utensils more convenient to clean. However, in the non-stick frying pan into life at the same time, the safety of its coating has never been questioned.There are two main coating processes for non-stick frying pans: one is the traditional coating process, Teflon coating (PTFE); The second is Sol-Gel process (SOL-gel), which is often used in the production of ceramic nonstick layer. At PRESENT, THE non-stick pan on the market is all kinds of, and the quality is uneven, how to choose, how to use and whether there is a health risk in their use, it is worth our discussion and learning. Teflon: Most non-stick pan weapons Non-stick frying pans and the coating materials they use date back to World War II. The earliest nonstick material was PTFE, now known as Teflon, which was discovered by DuPont engineer Roy Plunkett in 1938.Teflon has a high corrosion resistance, most of the strong acids and alkali (including aqua rega and fluoroantimonic acid), strong oxidants and reducing agents are unable to deal with it, so it has another nickname -- plastic king. Teflon also has an ultra-low coefficient of friction and surface energy, making it difficult for other substances to attach to its surface. With these absolute advantages, Teflon has occupied most of the market for non-stick pan coatings and is the leader in the cookware field. Teflon non-stick pan Common non-stick pan in daily life, in addition to the special instructions are with ceramic or other coating, are basically using PTFE to do non-stick coating.The traditional process of PTFE generally includes adhesive or resin, dye, non-stick components, reinforcing agent, water or solvent carrier; The quality of non-stick pans depends on the number of layers in the process and the materials used in each layer. Generally speaking, the more the process level of non-stick pan, the better the performance, the longer the service life, but the price will be more expensive.For example, the middle non-stick coating production process usually goes through three layers of treatment, the first is the bottom layer with adhesive base, strengthen the adhesion between the non-stick layer and the metal; Secondly, the use of dyes and filling materials to cover the bottom, so that the metal is not easy to expose, and can increase the thickness of the material; The last layer is mainly made of PTFE material to release non-viscous energy. The three-layer non-stick pan made in this way is suitable for daily use. If properly maintained, the service life is also considerable. Sol-gel: The secret ingredient of ceramic non-stick pan In recent years, in addition to Teflon, other types of non-stick coatings are also developing. Dakin fluoride coatings in Japan, Whitford coatings in the United States and ceramic coatings are gradually accepted by the market.Aside from Teflon non-stick pans, it has to be mentioned that ceramic ...