Self-adhesive labels are ubiquitous in our daily life, and are necessary consumables for many manufacturers. However, the warping Angle of self-adhesive labels has been troubling many manufacturers. A small warping Angle will directly affect the beauty of the products, leading to their own products are not favored from the visual point of view. So, why will self-adhesive warping Angle? How to deal with this kind of Angle problem, here involves a lot of professional problems. The following Xiaobian to explain to you one by one. 1.When sticking self-adhesive labels on the automatic labeling machine, many manufacturers find that the warping Angle often appears, which is the initial viscosity problem, and the instantaneous adhesion is not strong. That is to say, when the roller of the automatic labeling machine presses the label on the bottle, the time is too fast, the pressure time between the label rubber surface and the bottle contact surface is not long enough, resulting in the label cannot be well adhered to the bottle, and it is easy to warpage. This is the case that the initial adhesion of the self-adhesive label is not strong. 2.Many people find that self-adhesive labels will fall off and lose viscosity after a short time. This situation is the problem of holding viscosity, is the retention of the poor. In other words, the durability of label glue is too poor. After reaching a certain period, the glue loses viscosity, has no adhesion and falls off naturally. It's the durability of the glue. The following is the specific treatment method of self-adhesive warping Angle: 1.The pressure of the press wheel of the labeling machine is not enough: adjust the press wheel of the labeling machine and check the machine failure. 2.glue viscosity is too weak: should choose the appropriate glue material; 3.Improper selection of adhesive: When selecting self-adhesive, first of all, we should determine whether the adhesive required by the self-adhesive label is permanent or detachable, whether it can be pasted once or re-pasted, and whether there are special requirements for the chemical characteristics of the adhesive for the self-adhesive label. For example, when labeling large curved surfaces (circular substrates less than 2 cm in diameter), instead of using thick or hard paper materials (such as mirror coated paper) as surface materials, thin or soft paper materials and adhesives with high initial viscosity should be used; For containers requiring hot filling, film materials and adhesives with good initial viscosity should be selected as the surface material of self-adhesive materials. 4, the coating tension control is not good: the correct label of the coating is smooth after being removed from the base paper, without curling. After labeling, the label can keep good follow-up; When the label with too tight film tension is removed from the base paper, the label will turn up, leading to the phenomenon that the edge of the label is easy to degummed, and the...

Adhesive label is a representative pressure sensitive adhesive product which coexists with adhesive tape for packaging. Its wide range of uses, such as: food, cosmetics, drugs and other use of senior beautiful label; Quality marking labels for fiber products, electronic machines, daily necessities, etc.; A price tag used in a supermarket or grocery store; Computer tags for schools, hospitals and offices; Industrial labels used in engineering management. It is widely used in all industries and fields. Its growth rate is increasing by about 15% a year. The substrates used are paper, polypropylene film, polyester film, PVC film, aluminum foil, fiber and so on. Pressure sensitive adhesive is divided into acrylic, rubber, hot melt and so on. Europe, the United States mostly used rubber system, and recently quickly transferred to the hot melt system. According to a person of insight, 80% of the future adhesive label to hot melt system. In Japan, it's almost always acrylic. Acrylic pressure sensitive adhesive, has outstanding weather resistance, but also has good cutting, this is the reason to occupy the market. In Japan, the sealing packaging machine is very common, so the requirements of label cutting quality, operation suitability is very strict. Paper adhesive labels almost all use acrylic emulsion pressure sensitive adhesive; Film adhesive labels use acrylic solvent pressure sensitive adhesive. Adhesive labels are roughly divided into permanent adhesion type, then peel type, frozen type. Permanent adhesive type is used on items that do not need to be uncovered once attached. Its physical properties require fast viscosity, adhesion, and cohesion can be lower. Repeel type must be attached once on the article, clean without leaving residue. So the requirement of its fast viscosity is good, but the adhesion force is low, and the cohesion requirements are high. The frozen type requires good low temperature characteristics due to the popularity of frozen food. They are more commonly manufactured by coating the isolation paper with pressure-sensitive adhesive, drying it and then recombining it with the substrate, and finally rolling it into the product.

Water based adhesive for a more sustainable bond The market share of water-based adhesives is becoming increasingly large as development has shifted towards increasingly sustainable solutions that support health and safety and reduce environmental impact.Water-based adhesives are an excellent alternative to solvent-based systems because they do not contain any volatile organic compounds (VOC), are lighter, and generally require less product to form a lasting bond. Compared to other solutions, water-based adhesive systems are environmentally friendly, have low VOC content and are more user friendly.Using water-based adhesives does not require as many safety measures as systems that include solvents, which can increase efficiency depending on the nature of the project. In addition, the finished product is user friendly: Water-based adhesives do not pose a great health risk, nor do they release toxic or odorous fumes. Compared to other solutions, water-based adhesive systems are environmentally friendly, have low VOC content and are more user friendly. Using water-based adhesives does not require as many safety measures as systems that include solvents, which can increase efficiency depending on the nature of the project.In addition, the finished product is user friendly: Water-based adhesives do not pose a great health risk, nor do they release toxic or odorous fumes. Types of water-based adhesive systems The trend in adhesives is strong water based. In Europe and the US, water-based adhesives are the system of choice, while in markets such as China, they account for only about 20 per cent of the market. Water-based glue systems can be roughly divided into two categories: emulsion and disperse adhesives and solution adhesives. Class I: aqueous adhesive Solution adhesive is the most traditional form of water-based adhesive system. They use water as a carrier substance and solidify as the water evaporates. These water-based adhesives are made using natural and synthetic polymers that dissolve in water. Uses for these water-based glue systems include paper adhesives and wettable glues, such as those found in envelopes, stamps and labels. Application: Roller, spray and bead Adhesion: Wet adhesion Examples: Starch/dextrin adhesives for paper applications such as book binding, and protein/casein adhesives for the food packaging industry. Type 2: Water-based lotions and dispersing adhesives Water-based adhesives are used primarily for food packaging lamination, but are also finding an increasing share in other applications. Water-based adhesive emulsion and dispersion system is a heterogeneous mixture consisting of liquid or solid polymer phases dispersed in the water phase. These water-based adhesives can be made using a variety of polymers, including PVA (vinyl acetate polymer), PVAC (vinyl acetate copolymer) and acrylic, as well as synthetic elastomers such as PUR (polyurethane). Like other water-based adhesives, disperse adhesives and lotions can also...

Self-adhesive refers to paper, film or other special materials as fabric, coated with adhesive on the back, a composite material printed with silicon protective paper as the base paper, the reason for the rapid rise of self-adhesive in recent years, because it is very practical, and very convenient, the cost is not high, the following to tell you about a few small knowledge of self-adhesive printing. Printing size Specifications and dimensions of self-adhesive printing labels, appearance, shape and color of products. According to the size of the product, the content needs to customize the size and shape style is very much, there are round, rectangular, square, rounded corner, irregular shape. To customize the shape and color to match the style characteristics of the product. Printing material Self-adhesive printing label material, the use of adhesive type. Some stickiness is strong, some stickiness is not strong, some can not tear, some can move, there are many kinds of self-adhesive labels, there are thermal paper, PET matte silver paper, coated paper, kraft paper, brushed self-adhesive stickers, transparent PVC stickers, water-soluble paper, etc. Common Uses The common uses of self-adhesive printing labels are customized according to the categories and nature of the products, such as trademarks, stickers, signs, inscription boards, etc., which are not only applied in food and beverage, daily necessities, household appliances, cultural and educational supplies, but also in the field of commodity circulation of price labels and clothing, textiles, medicine, cosmetics and other aspects. At present, our company's waterborne adhesive and and waterborne Label adhesive, has been put on the market, the market feedback is good, the performance is excellent, fully able to meet the complex needs of customers of various packaging structures. For example Description Water based pressure adhesive for paper materials SA-232H is an adhesive specially designed for reverse and various gravure coaters at higher converting speeds, for the production of general purpose paper labels or other pressure sensitive articles. Type Acrylic ester and vinyl ester copolymer dispersion Key Features -Non-yellowing -Wider application range -Very good bleeding resistance -Very good paper-aging resistance -Excellent balance of tack and shear -Higher productivity through high speed converting -Good temperature and aging resistance Typical Properties Appearance Milky white liquid pH 6.0-8.0 Solid content 54±1% Type of emulsion Anionic Viscosity (25℃) 200-300mPa·s Density (20℃) 1.02 g/cm3 Application -General purpose paper labels -Various single copper, mirror copper paper, mirror wet paper, thermal paper, mirror aluminum paper, aluminum foil label and advertising materials