Urumqi boss how compound plastic urumqi boss composite glue water gel used in pressure sensitive adhesive
has become a development trend of pressure sensitive adhesive, but also there are some disadvantages in use.
In recent years, with the development of economy, all kinds of commodity packaging increases rapidly, make the soft packing also is able to rapid development, it is hoped that the new technology, new products is constantly improving, innovation.
Ink, glue viscosity automatic tracker are in eager expectation and requirement of the people was born.
Below is the actual production in the process of printing ink, glue viscosity of high and low, to analyze the influence of product quality.
Urumqi boss how composite adhesive used tools before drying of glue can be used warm water to clean.
In addition, hot melt adhesive also provides a good anti-theft function, due to the adhesive penetration into the corrugated any attempt to open the carton will tear fiber.
A, printing ink, glue viscosity control in the actual production situation of five, printing ink, glue viscosity change its relationship with strong read if printing ink, glue composite viscosity is too small, it shows that excessive solvent content in the ink, glue, and resin, pigments and other components are relatively less, so can't form a smooth layer when dry, so white, become dull, lack of gloss.
In the process of printing, composite, the viscosity of control is the key, particularly in the 80 -
Output of 140 m/min high-speed gravure and compound, with the passage of the actual, the solvent in constant volatilization, viscosity also gradually rise, liquidity becomes poor.
Although in the deployment of ink, glue, there are 3 # cup and a stopwatch for 5 testing viscosity values, but rely on artificial methods monitoring is difficult to control printing composite dynamic moment of change, more can't control the accuracy of the continuous adding solvent quantity.
In production, when printing, composite viscosity rise, are artificial with adding solvent to dilute viscosity kettle.
Add, the more printing color change after production, the greater the homogeneous degree of the composite is poorer, fastness also drops, thereby increasing the return and the rejection rate.
Four, stand or fall of transfer of ink, glue, related to viscosity, viscosity, the greater the transfer efficiency of the worse since the role of the solvent is solvent resin or additives, additives, etc. , given to liquidity make the ink, glue is easy to disperse.
Second, ink, glue viscosity changes on the quality of the product thermal decomposition can produce poisonous gas.
General coating concentration control in 20%
It is advisable to 20 seconds.
Ink, glue viscosity control whether appropriate, directly with the transfer of ink pigment, female version, print gloss, pigment adhesive fastness, compound uniformity and stability to the vast majority of the quality problem of the relationship.
Viscosity value of cause: ink printing ink scraping clean, the net transfer is not good, poor flowing property, residual solvents, trailing, line, print and scraper is shorter.
Composite glue viscosity value transfer big can also cause bad, poor flow property, poor, residual solvents, transparent of peel strength, poor, poor heat sealing strength, serious influence on production quality and yield and efficiency.
Urumqi boss composite glue like b, do not use for paint solvent cleaning is stained with viscose element, because this kind of high volatile solvents, easy combustion and explosion, and can produce poisonous gas at high temperatures, and easily damaged pur hot melt adhesive machine heating the teflon coating on the pressure plate.
2, can also be observed in appearance, if the hot melt adhesive glue type, do manual work is coarser, then the quality.
3, ink, glue viscosity change for purchasing problems PUR reactive hot melt adhesive, is through the reaction of moisture curing, also can saying is the water molecules through chemical reactions into a solid, chemical reaction, reaction time, according to related to the contact area and so on factors in the air.
Thus directly affect the printing, composite cost.
Urumqi boss compound plastic how can dissolve in water, ethanol, ether and most organic solvents.
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