Taizhou HENKEL industrial rubber factory taizhou HENKEL industrial rubber factory don't have flooded floor or very humid environment of moisture in the pur reactive polyurethane hot melt adhesive
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.
Since the early 1970 s, polyurethane adhesive for the generation of polysulfide, used to install the windshield and rear window.
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.
Water-based glue because volatilizes slower, must add 5% of waterborne curing agent, and mixing 5 -
8 minutes, mix evenly, add the curing agent of glue must be finished within 4 hours, do not use the next day.
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.
Food purification silicone Sylopute in the production process of liquid food, show its ability, such as wine, fermentation sauce, soft drinks and cooking oil.
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.
Taizhou HENKEL industrial rubber pressure-sensitive adhesive factory according to their polymer into rubber pressure-sensitive adhesive, polyacrylate pressure sensitive adhesive, polyvinyl ether resin, polyurethane resin, polyisobutylene emulsion pressure sensitive adhesive, such as occupies the dominant position, the pressure sensitive adhesive industry in China is a large, emulsion pressure sensitive adhesive especially acrylic ester emulsion pressure sensitive adhesive has a special significance in our country.
And because the thin, also caused the ink curing speed.
Water-based glue process characteristics of taizhou HENKEL industrial rubber factory [
The experiment reagent 4.
Latex solid content first made a small box, aluminum foil with electronic analytical balance according to its quality, record the value.
The windshield and rear window between the body and is sealed with butyl rubber belt, and fixed with mechanical method.
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;
In addition to the above several kinds of raw materials can also be according to the difference of temperature, regions with some suitable for cold with the temperature of the thermal dose of cold resistance agent or suitable for tropical temperatures.
Hot melt pressure sensitive adhesive.
Solid content, there are gap filling, to avoid the edge roll up, bubble and crack, and cause the glued parts deformation, dislocation and contraction.
Taizhou HENKEL industrial rubber factory put the glue sample a small box of people keep the constant temperature incubator is 105 -
110 ℃, drying to constant weight, according to its quality, record values.
Structural adhesive in the car on the other is the adhesive assembly of glass and metal.
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