12/18/2021

Factors Affecting the Color of Special Color Printing

Factors affecting the color of special color printing         Why the color of spot color ink printing often goes wrong is generally caused by the incorrect formula of spot color ink. The formula of spot color ink is the most important factor affecting the color of spot color printing. But. Sometimes it is printed with the same spot color formula. Factors affecting the color of special color printing       The color difference between one batch and another is also very large. Why? This is because in addition to the spot color formula. There are many other factors that affect the color of spot color ink printing.Factors affecting the color of special color printing Ink layer thickness         Ink layer thickness refers to the thickness of ink deposited on the substrate surface after printing. In spot color printing, sometimes the dot area ratio is used to control the thickness. To get a lighter color.Factors affecting the color of special color printing        Ink layer thickness is in […]
12/18/2021

Flexographic Printing and Its Cost

Flexographic Printing and Its Cost       In the past decade, many new technologies have emerged in flexographic printing, such as closed doctor blade box, ceramic anilox roller, gearless servo drive, UV printing, high pigment ink, thin plate printing and digital plate making technology, which ensure the steady improvement of flexographic printing quality. Flexographic Printing and Its Cost       The application field of flexographic printing in China has increased significantly in the packaging of products such as liquid packaging boxes, paper cups, folding cartons, beverage bags, milk boxes and cigarette labels. Flexographic printing technology is also used in the printing of flexible substrates such as paper, self-adhesive labels, plastic films and aluminum foil.Flexographic Printing and Its Cost        Integrating different printing technologies and processes into the on-line production of a flexographic press to obtain integrated production effect will achieve g […]
12/18/2021

Formula and Manufacturing Technology of Adhesive (cooked glue)

Formula and Manufacturing Technology of Adhesive (cooked glue)        The quality of adhesive is closely related to the quality and dosage of starch, which has a very direct impact on the packaging and printing industry.Formula and Manufacturing Technology of Adhesive (cooked glue) Paste:Formula and Manufacturing Technology of Adhesive (cooked glue)       Industrial caustic soda (NaOH) there are crystalline, rod-shaped, flake and 30% NaOH aqueous solutions. As long as the purity is qualified, caustic soda in any state can be used. The amount of caustic soda is added to oxidized starch and stirred for 20 minutes until the starch solution is translucent paste. Formula and Manufacturing Technology of Adhesive (cooked glue)        The amount of caustic soda is too large, the glue solution has high fluidity, good transparency and long storage time, but the alkali content in corrugated peak sizing will also increase The corrugated box is easy to turn yellow, causing the ink on the surface of […]
12/18/2021

Influence of Paper and Ink Characteristics On Dot Expansion

Influence of Paper and Ink Characteristics On Dot Expansion        For dot image printing, although dot expansion is inevitable, how to effectively control dot expansion to make it within the normal specified range is the guarantee to improve the quality of printed matter. Generally speaking, the 50% dot gain value specified in the printing requires that fine products should be < 12% and general products should be < 18%. Influence of Paper and Ink Characteristics On Dot Expansion        Once it exceeds this range, there will be quality problems such as printing tone loss, density increase, color change and so on. In the prepress production and printing process, certain compensation will be made for the normal dot increase, but the abnormal dot increase is often irregular. Influence of Paper and Ink Characteristics On Dot Expansion        In this way, reasonable compensation can not be made in the prepress production process, but can only be controlled in the printing process. The […]
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