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The viscosity of the ink and the glue affect the overall cost
Promulgator: admin
In recent years, with the development of economy, soft packaging technology advances by leaps and bounds, and the impact of ink and glue viscosity on the overall cost of flexible packaging has been paid more and more attention. The following are the actual production process of ink, glue viscosity, and analysis of the impact of product costs.
ONE、Control of viscosity of ink and glue in actual production
In printing, composite process, viscosity control is the key, especially in the high speed 80-140 M / output rotary gravure printing and composite, with the actual passage in constant solvent volatilization, viscosity gradually increased, poor liquidity.
In production, when printing and complex viscosities rise, artificial water bottles are added to dilute the viscosity. The more the number of additions, the greater the color change after printing, the lower the uniformity of the composite, and the firmness also decreases, thus increasing the return and reject rate.
TWO、Influence of viscosity change of ink and glue on product quality
Ink, glue viscosity control is appropriate, direct transfer, and the relationship between the adhesive ink pigment, pigment printing version, gloss, firmness, uniformity and firmness of the composite quality problems most greatly.
The ink with large viscosity causes the printing ink scraping is not clean, the net transfer is not good, the leveling is poor, the residual solvent is more, the trailing, the lines, the printing plate and the scraper are short in service life. The viscosity of composite glue is large, which will lead to poor transfer, poor liquidity, residual solvents, poor transparency, poor peel strength and poor heat sealing strength, which will seriously affect the quality of production and the rate of finished products and work efficiency.
THREE、 The quality of ink and glue transfer is mainly related to viscosity. The greater the viscosity, the worse the efficiency of transfer
Because the solvent is the solvent, resin or additives, additives, etc., to give liquidity, so that ink, glue easy to disperse. When the viscosity is too large, it is in the supersaturated state, the liquidity is poor, can not be dispersed evenly, but a group appear, easy to pile together. In this way, ink, glue can not smooth in and out of mesh, not to mention the transfer, and thus prone to block version phenomenon.
FOUR、The problems caused by the change of the ink, glue and viscosity
In printing ink, ink, glue glue in the market, the price is in ink, glue quality, viscosity and concentration to measure the overall cost and price size, because of the printing manufacturers can not identify these indicators, bring difficulties to the procurement of printing ink, glue. Thus directly affect the printing, composite costs.
FIVE、The relationship between ink and glue viscosity and residual ink and glue
In production, a lot of time is the ink, glue, viscosity and solvent can not be added constant, so that ink, glue remaining times increase, the quantity increases. These leftover ink thrown, unfortunately, and no longer good, and their performance has changed, the color becomes dark, leveling become worse, impurities, scraping clean, producing bubbles.
If the glue is not kept well, it will solidify, compound and fastness become worse, and have a great influence on the quality of printing. If you use the viscometer, adding amount of viscosity and solvent ink, glue has accurate control, so it will greatly reduce the frequency and amount of residual ink, glue.
SIX、Relationship between viscosity change of ink and glue and production management
In the actual production of a printing mill, the worker's idea is to make the greatest payment with the least labor. If mismanagement, workers in the printing, composite process, a long time to add the solvent, some are not always adding solvent, such a waste of ink and glue, and create patterns of aliasing, uniformity and composite firmness, to the company directly caused economic losses.
