What are the precautions for printing ink selection of BOPP color synthetic paper?

When printing BOPP color synthetic paper, the choice of ink is crucial, which directly affects the printing effect, adhesion and durability of the ink. Here are some things to pay attention to when choosing ink:

First, the compatibility of ink and BOPP color synthetic paper

1.Surface tension: The surface of BOPP color synthetic paper is smooth, and the absorption of ink is poor, so it is necessary to choose an ink with moderate surface tension and good adhesion to the surface of BOPP.

2.Drying performance: The ink should have good drying performance to ensure that the ink can dry quickly during the printing process to avoid sticky back or unclear printing phenomenon.

Second, ink type

1.Water-based ink: Water-based ink is environmentally friendly, non-toxic, suitable for occasions with high environmental protection requirements. However, due to the non-absorbable surface of BOPP, water-based inks may not have the same adhesion and dryness on BOPP as some solvent-based inks. Therefore, when selecting water-based ink, it is necessary to ensure that its formulation and performance can meet the printing needs of BOPP color synthetic paper.

2.Solvent-based inks: Solvent-based inks have good adhesion and dryness and are suitable for printing on non-absorbent materials such as BOPP. However, solvent-based inks may contain volatile organic compounds (VOCs), which have a certain impact on the environment and health, so the pros and cons need to be weighed when choosing.

3.UV curable ink: UV curable ink through ultraviolet irradiation to achieve rapid curing, with fast drying speed, strong adhesion, good wear resistance and other advantages. UV curable inks are a good choice for applications that require high speed, high quality printing.

Third, ink performance requirements

1.Color brightness: the ink should have a good color brightness to ensure that the printed image is full of color and vivid.

2.Wear resistance: BOPP color synthetic paper is often used in packaging and other fields, so it is necessary to choose an ink with good wear resistance to ensure the durability of the printed product.

3.Weather resistance: For BOPP color synthetic paper printing products that need to be used outdoors, the ink should have good weather resistance and be able to resist the erosion of natural factors such as ultraviolet light and rain.

Fourth, the choice of ink suppliers

1.Brand reputation: Choosing well-known brands and ink suppliers with good reputation can ensure the quality and stability of ink.

2.Technical support: Ink suppliers should provide perfect technical support and services, including ink selection suggestions, printing parameters setting guidance.

Fifth, other precautions

1.Ink storage: Ink should be stored in a sealed, cool, dry environment, away from direct sunlight and high temperatures. At the same time, attention should be paid to the shelf life of the ink to avoid the use of expired ink.

2.Mixed use: different brands and models of ink are generally not recommended to be mixed to avoid adverse consequences. If it is necessary to mix, a small range of tests should be conducted to verify its compatibility and printing effect.

In summary, when selecting the ink for printing BOPP color synthetic paper, it is necessary to consider the compatibility of ink and BOPP color synthetic paper, ink type, ink performance requirements and the selection of ink suppliers.