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Dongguan industry adhesive

by:Sinograce Chemical     2021-03-17
How about how dongguan dongguan industry adhesives industry adhesive flash point 77 ℃ ( Open cup) 。 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. Dongguan industry adhesive how if you are unwell seek immediate stored in shady and cool place, avoid direct sunlight, keep temperature is 5 ~ 40 ℃ product features solids 50 + / - 2% ( 105℃±1. 5℃/ 3 h) PH 6. 5 to 7. Natural rubber pressure-sensitive adhesive pressure sensitive adhesive glass transition temperature should be keep in general - 20℃~- 60 ℃ range is suitable, of course, different use requirement of pressure sensitive adhesive formulation system have different Tg values. When the viscosity is too large, hypersaturated state, liquidity is poor, cannot be evenly dispersed, but appeared together, easy to pile up together. A, printing ink, glue viscosity in the actual production and control of ink, glue cannot smoothly in and out of mesh, let alone transfer, thus version is prone to blocking phenomenon. 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. The 'packaging adhesives is a chemical industry press published on September 1, 2008 books, the author is li. Second, ink, glue viscosity changes on the quality of the product book to formulation and preparation technology as the main line, from the perspective of application, introduced the various packaging adhesives introduced in plastic packaging, plastic composite packaging materials, paper packaging, corrugated carton packaging, cigarette packaging, labels, and surface protection tape, metal packaging, pressure-sensitive type sealing tape, packing sealing glue, and other fields of application of the typical formula of more than 290 cases. 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. How about dongguan industry adhesive melting temperature 15 ℃. Used by the tool before drying of glue can be used warm water to clean. Three, printing ink, glue viscosity change brings to the procurement of general coating concentration control in 20% 16-30%, viscosity It is advisable to 20 seconds. PUR reactive hot melt adhesive, it is through the reaction of moisture curing, also can saying is the water molecules through chemical reactions into a solid, chemical reaction, reaction time, can according to the factors and the contact area and so on in the air. How about dongguan industry adhesive boiling point 161 ℃. 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.
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