Adhesives tape generally use flow delay coating method, adhesive coating. The basic principle is the head by coating cavity pressure into the top of the coating adhesive, the head of an adjustable size is fine seam, coating as the bottom paper, operation, adhesive uniform fine seam by coating the issue head on the bottom paper and coated surface. Coated by volume adjustment of fine seam adjusted, adhesive coating quantity is the key decision self-adhesive materials properties, the general recommended coating 24g/m2 quantity is plus or minus 3 grams of tolerance for. When adhesives viscosity changes can adjust to adhere to pressure the overall coating grams unchanged. Advanced flow delay by infrared scanning sensor coating device feedback will coating thickness computer control equipment, through analysis of related data automatically adjust disposal, guarantee the stability of quality coating adhesive. Adhesive coating of quantity according to season and regions should be different of temperature and humidity changes, also can be adjusted according to customer's request. The general rule is winter than summer coating quantity should large amount of coating. Winter in the south than southern use use large amount of coating. For different base material appearance than smooth surface appearance, rough large amount of coating. Coated with the rapping about quantity of materials, certain scope, cohesion and coating is proportional to the amount. Adhesive coating of large amount of materials with small processing and storage will have direct influence. Coating caused by large amount of problems: occurrence glue phenomenon: especially in summer will appear drum end adhesion or leaflet paper stick together, causing rejects. Slitting difficulties: blade and stick to easy viscose paper, printing and fiber-end surface process brings hidden trouble. Printing paper difficulties: adhesive often lost in lose the cardboard binder, affect the normal lose paper and positioning alignment. The large amount of glue on a label to commodities, tag after around will produce glue, stick on the dust formed after black side. High temperature, tags in commodities appear to move the vicarious phenomenon. Coating had measured small problem: the influence caused from commodity to viscosity: label off the appearance or large, especially rough surface curvature. Affects the data structure: surface sheets and bottom paper from the line between the layering materials force is too small or in the die-cutting row with waste paper edge when label nullify off together, affect the normal production. Sometimes should adjust according to customer's demand, the quantity of coating supermarket used tags comparatively small amount required coating. But if need to stick to the rubber and other special appearance need to increase the quantity of when to strengthen the cohesiveness coating. According to different classification, adhesive classification method, adhesives can also be divided into different types. In accordance with the coating technology such as can be divided into: hot sol class, solvent glue kind, emulsion adhesive classes; According to the chemical composition can be divided into: rubber base material type, acrylic classes; Press adhesive properties can be divided into: permanent class, can remove classes; According to the application can be divided into: universal, special glue type, medical type, low temperature type, high-temperature type, etc. Adhesive properties of initial viscosity: labels with a small base adhesives and contact between the pressure on base material, binder adhesion of the initial viscosity function called adhesives. Initial viscosity label contact immediately after experiencing considerable backing the adhesion, remove labels need certain force, initial low viscosity base after the tag contact appearance, adhesion is small, tag is easy to be removed. Determine initiative viscosity can use tension test method and cant ball method. Final viscosity: when adhesives infiltration base material, labelling appearance can get the most adhesion called final viscosity. To gain the maximum eventually viscosity depends on the strength of the adhesives, base material appearance of rough level and environmental temperature. Labeling maximize viscosity time after for 2 ~ 24 hours. Generally speaking, the initial viscosity and ultimately no direct relationship between viscosity. A higher initial viscosity label doesn't has higher final viscosity. Resistance to shear strength: high shear strength is also called the viscosity. Relevant adhesive a measure of cohesion, says adhesives pliability. Resistance to shear strength low adhesives have greater flow trend, general has high initial viscosity, tag from base material separation is in need of greater tension. Adhesive has higher adhesive strength, high cohesion, right now because when possible lower initial viscosity, tags easier from base material separation. Adhesives flow affect not only its initial viscosity level, also determines the tags around the glue, and then influence printing processing pollute adhesion, lose the advantage and double card paper, so will control the shearing strength resistance. Inside certain limits Ultraviolet radiation resistant capability: determine adhesives under uv irradiation, does not lose the ability of cohesion and change color. Nairongji ability: bonding solvent used in a solvent environment, not reduce the ability of bp. Solvent including water, alcohol, petrochemical products solvent, organic solvents, plasticizer, etc. These solvent exists in the application environment or substrate label appearance. Cold flow ability: below normal circumstance said adhesive flow capacity. Have good ability to flow for low temperature of adhesives often type or universal adhesives. The lowest temperature: adhesive label losing its function in the premise of the minimum temperature, base material appearance. The lowest labeling temperature by adhesives glass transformation point "to determine, adhesives. Transformation point with the temperature under reduced gradually crystallization and hardening into solid. Ordinary acrylic class adhesives minimum labeling temperature 0 ℃, rubber base material adhesive label for the lowest temperature 25 ℃. Application temperature range: index sign after use, adhesives achieve maximum rapping and without changing its characteristics for the temperature range. The adhesive, application of acrylic acid temperature range from -20 ~ 120 ℃, rubber substrate bond between 40 ~ 80 ℃ for. Application temperature range between the surface sheets with labels. Base material appearance condition and environment temperature related, different binder composed of different application temperature range. Permanent adhesives and can remove adhesives permanent adhesive without damaging the label refers to the appearance of circumstances, it is hard to tear adhesive label. As the whole of beer and most chemical product label and security labels. Can remove adhesives refers to the non-drying label can complete dismantled and won't damage the adhesive bonding surface was on, such as sunglasses self-adhesive label. Permanent and can be removed in fact just a relative concept, permanent adhesive could become, over a period of time to remove the can remove adhesives can be over a period of time, also may become permanent this and adhesives performance, paste appearance conditions, the length of time and using the environment has the very big relations. Ultimately have to define through experiments.

Let your of photographic self-adhesive label adhesives tape

The role of connections. In accordance with the characteristics can be divided into permanent and can remove two kinds, the non-drying label is the adhesive label material and adhesive backing the media between. Adhesives have many formula suitable for different surface material and using environment. Adhesive label technology is the most important local, the non-drying label is the key technology.