The adhesive not only needs it to stick firmly, but also needs long-term viscosity, the effect of the adhesive is better, if it can not be sustained, after a period of time it will fall off, or for some reason, the viscosity will decline, so we sometimes need to think of some ways to ensure the durability of the viscosity. Research work and experience have shown that adhesives can bond things by intermolecular attraction, and the bonding force between these interfaces is composed of secondary valence force (physical force, electrostatic force, primary valence force (chemical force) and mechanical force, of which the secondary valence force is the main force producing the bonding force. The implementation of this adhesive relay can be considered to have two stages: The first stage is that the flowing adhesive molecules spread to the surface of the bonded object and gradually get closer by means of Brownian motion, and the fluidity of the adhesive liquid (less viscosity) and the application of curing pressure are conducive to the contact and proximity of the molecules. The second stage is the generation of intermolecular adsorption. When the distance between the adhesive molecules and the surface molecules of the adhesive is close, the secondary valence force begins to play a role and increases with the reduction of the distance between the molecules of the adhesive and the surface. The two processes cannot be completely separated, and the glue has been going on before curing. It can be seen that the adhesive can promote full contact with the surface of the adhesive. The closeness of the distance between the two molecules is the key to obtain the adhesion. Therefore, for the same kind of adhesive, the viscosity of the adhesive itself is large or in the construction, try to make it thin, Brown motion heating measures and curing pressure and curing time extension (especially at room temperature curing adhesive), the surface of the adhesive flat, clean, dry are the conditions for obtaining the best adhesion. To sum up, the following points are what we should pay attention to in construction: 1, the procedure of the bonding process: surface treatment for different properties of the adhesive and different situations, surface treatment. Strictly can be divided into general methods, chemical methods and physical methods. In the decoration industry, it is mainly for the simple treatment of sticky objects. Such as: dust, oil, rough surface, water and other aspects of treatment, to ensure that the sticky surface is clean, dry, no oil. 2, the adhesive surface should be evenly coated to ensure infiltration, as far as possible to avoid bubbles, because there are pores and the bonding strength is greatly reduced, resulting in degumming. Attention should be paid to the alignment of the position at one time, do not mismove, can be pressurized, eliminate air, and make it close contact. 3, the process of curing adhesive through chemical and physical action to make i...

1. Familiar with the properties of adhesives For bonding, adhesive is the basis, the selection of adhesive, its performance is an important basis. Different types of adhesives, with different properties, determine their various uses, only familiar with the performance of adhesives, in order to handy selection. 2.Identify the nature of the adhesive There are many types of adhesive species with different properties, and the properties of each type of material are also different, and the appropriate adhesive must be selected according to the different characteristics of the material. Materials are divided into metal materials, non-metal materials and composite materials. 3.The conditions of use should not be ignored The adhesive parts should be used under certain conditions, and the condition factors have an important impact on the bonding performance, so the condition factors can not be ignored when selecting the adhesive. 1)Temperature Different adhesives have different heat resistance. Some have good heat resistance and can be used at higher temperatures; Some have poor heat resistance and can only be used at lower temperatures, most adhesives have better low temperature resistance, and some can also be used in ultra-low temperature environments. The general adhesive use temperature is -40 ~ 150℃. 2)Humidity Moisture and moisture are very unfavorable to the stability of the adhesive interface and can be said to be harmful. In the environment with high humidity, 502 rubber, unsaturated polyester resin rubber, epoxy-polyamide rubber can not be used, but phenolic butyrilene rubber, epoxy-nitrile rubber, epoxy polysulfide rubber and so on should be used. It is best to get warm curing. 3)Chemical media The chemical medium is mainly acid, alkali, salt, solvent, etc., different types of adhesives, different curing conditions, with different ability to withstand the medium, should be selected according to the adhesive contact medium. 4)Consider the possibility of process implementation All kinds of different adhesives need different process conditions, some can be completely cured at room temperature, and some can be cured by heating; Some cure quickly, some cure slowly. On the continuous production line, if a long curing time is not allowed, a fast curing adhesive should be selected.

One,Overview Paper-plastic composite can make the surface of paper printed matter more bright, smooth and color more bright and full of three-dimensional sense, but also play a role in moisture, anti-fouling, anti-counterfeiting, folding resistance, wear resistance and so on.It has been widely used and rapidly developed in printing and packaging industry at home and abroad. The market demand for paper plastic laminating adhesive is increasing day by day, the market is mature, and the potential is huge. Traditional paper and plastic film adhesives are mainly solvent-based film adhesives, but a large amount of solvent volatilization pollutes the environment in the process of use, and flammable and explosive storage and transportation is inconvenient, the use of large energy consumption, the use of high cost.According to the characteristics of paper-plastic composite, the use of water-based cold-paste paper-plastic composite film adhesive, non-toxic and pollution-free, low cost and no fire hazards, and has the characteristics of good brightness, no bubbles, no yellow, especially with the increasing awareness of people's environmental protection and the mandatory implementation of relevant national environmental protection policies, the development of paper-plastic composite adhesive to water-based is an inevitable trend.Paper-plastic cold-paste water-based film adhesive is also called cold-paste adhesive, cold-paste adhesive, water-based cold-paste film adhesive, etc. At present, the domestic packaging and printing industries have gradually begun to use water-based film adhesive to meet the requirements of environmental protection, and the market demand is expanding. Therefore, the production of water-based cold-paste paper plastic film adhesive is not only a mature market, easy to develop, but also has a stable and mature development prospects, social benefits and economic benefits are obvious. Second, product characteristics and application range 1.this product is suitable for bidirectional tensile polypropylene film (BOPP) polyvinegar (PET) film and a variety of color printing paper composite, can be used for old film machine, can also be used for new film machine. 2.environmentally friendly products, water-based non-toxic, non-polluting, non-combustible and non-explosive. Good brightness, no bubbles, no glue. 3.Low energy consumption, easy to use cold paste, low cost. There is no need to heat the drying channel or the composite roller when the film is laminated, and the energy saving effect is obvious 4.the use of new technology to produce products with stable quality, low cost, strong ability to eat powder, solid content of 16%~42% of the whole series of products can cover powder, consistency is easy to adjust, uniform glue, glue stability, good permeability and ink Third, product quality indicators 1.Appearance: milky white viscous liquid 2.Product performance conforms to the following table: Project Index Solid content 18~42 pH 4~7 Viscosity ...

Laminating water-based adhesive for flexible packaging. Suitable for thickness 30 μ Dry compounding of plastic and paper plastic within M. It is suitable for compounding between pet, BOPP, CPP, PE, aluminized film, pearlescent film and other materials, and is suitable for dry compounding machines with various speeds Features Low odor, good strength and good matching with ink Water solubility, good leveling, high transparency, yellowing resistance It can be used in one or two components Dosing Recommended coating weight: 1.6~2.0 g/m2; according to the actual conditions. It’s suggested to use anilox roller (180~220). Laminating Temperature Drying tunnel should be set to 75~80~85~95℃. Nip roller temperature: 65~75℃. Nip pressure:0.35~0.4 Mpa; In cases of not damaging the films, the pressure should be increased as higher as possible. Package Type: 50kg/bucket; 160kg/bucket Popular wide water based glue acrylic adhesive for packing laminationOr as per customer's requirement.