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Harbin fule adhesive complaints

by:Sinograce Chemical     2021-03-31
Harbin Harbin fule adhesive of complaint 1 fule adhesives, avoid in a volatile and explosive materials or gas around using polyurethane pur hot melt adhesive machine, pur hot melt adhesive machine spraying equipment cannot be stored around flammable items. Glue dispensing quantity according to the work experience, the size of the adhesive dot diameter should be the half of bonding pad spacing, the size of the adhesive dot diameter should be adhesive dot diameter after patch 1. Five times, so that can ensure that there is enough glue to bonding elements and avoid excessive glue bonding pad and glue machine dispensing quantity depends on the length of the rotation of the screw pump to decide, practice should be according to the production situation, Room temperature, glue viscosity, etc. ) Selection of pump rotation time, manufacturing defects which were liable to occur during the following process: glue dot size is unqualified, wire drawing, glue impregnation welding plate, curing strength is bad off so easily, solving the problem of the glue machine should be various technique parameters, overall research to find a solution to the problem. Structural adhesive in the car on the other is the adhesive assembly of glass and metal. Water-based coating glue with water as solvent or polyurethane acrylate resin through specialized emulsification equipment, emulsion. Its advantage is: many varieties, environmental protection, low prices. Now there are a lot of coating is done with water soluble glue, such as general water soluble pa, water soluble pu and leather adhesive, oil wax feeling, the feeling of color paste and other functional material. Water soluble with its functional and environmental protection, and the price is low, will be the future direction of coating. Defect is poor film-forming, washing fastness, pu can't stick hot glue. According to the provisions of GB/T 2793. Because there was no solvent, lumber moisture content is not change, no fire and poisoning. Oily coating adhesive is oily solvent ( Toluene, DMF, butanone, etc. ) As a solvent, dissolve or polyurethane acrylate. Its advantage is good film forming, good color fastness, pu can stick hot glue, is the current commonly used coating glue. Defect is due to the use of the oily solvent, so environmental protection lacking a bit, especially now that oil prices, oil solvent prices soaring all the way, most of the coating glue due to the cost is too high, so use more bad of the oily solvent, leading to environmental protection is not up to standard, in addition with the national environmental standards to further improve, so for environmental requirements of the coating adhesive is higher and higher. Hot melt adhesive application domain edit 6 heat layer ( For re-entry) ; Brake friction lining must be in high temperature above 149 ℃ under shock and shear stress, nitrile - available Phenolic resin film. Hot melt adhesive is a kind of plastic adhesives, to a certain temperature range with the temperature change and change its physical state, and chemical properties unchanged, its non-toxic tasteless, environmentally friendly chemical products. Is the use of hot melt glue by heating the hot melt adhesive, hot melt adhesive machine melt glue after become a kind of liquid, by hot melt adhesive machine hot melt rubber hose and hot melt glue gun, to be adhesive surfaces, hot melt adhesive cooling after completed the glue. Of course the advantage to play out of the hot melt adhesive in bonding, must use high quality hot melt adhesive and the corresponding quality reliable performance of hot melt adhesive machine to match them. Harbin food purification silicone Sylopute fule adhesive complaints have a series of purpose and function, such as preventing beer, sake, wine and so on become cloudy, reduce wine, soy sauce and soft drinks of turbidity, and improve the ability of beer foam to keep. 1. Water-based glue process characteristics of Harbin fule adhesive complaints will apply the glue sample small box put people keep the constant temperature incubator is 105 - 110 ℃, drying to constant weight, according to its quality, record values. In a small box into the glue sample again, according to its quality, record the value. (1) using water-based glue, in line with the shoe industry, a long-term trend in brands actively, water-based adhesive has been widely used all kinds of shoe factory, water-based glue quality gradually progress and stability; Or use other crosslinking polysulfide material, to seal and fixed at the same time. Let's look at the characteristics of offset printing ink, compared with the silk screen, printing ink layer thinner, thin will have a drawback, simple sense is bad, visual effect is weak, there would be no stereo effect. Harbin fule adhesive complaints between original windscreen and rear window and body is sealed with butyl rubber belt, and fixed with mechanical method.
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