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Case Study: Decolorization Treatment of Wastewater from a Printed Carton Manufacturing Plant

Case Study: Decolorization Treatment of Wastewater from a Printed Carton Manufacturing Plant

The reason why printing wastewater from cardboard manufacturing plants is difficult to treat is that it exhibits very high color intensity, deep coloration, turbidity, and elevated pollutant concentrations, including a high chemical oxygen demand (COD). These characteristics, in turn, increase both the complexity of treatment and the associated costs. Given the challenges involved in treating such wastewater, stringent technical requirements must be met during the treatment process; decolorizing agents are precisely the type of water-treatment chemicals that can satisfy these requirements.

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15

2021-09

How to achieve high-quality flexographic printing on aluminum foil bags?

The effective selection of screen ruling depends crucially on the fidelity of the proof copy. In addition, factors such as printing plate-making equipment, printing machinery, and printing materials must also be taken into account. Under identical conditions, the screen ruling used in flexographic printing is generally lower than that used in offset and gravure printing.

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