Flexographic Printing Solutions for Plastic Woven Bags
Date: Sep 05 2024 From: Star Color
Plastic woven bags are a low-cost, durable, and high-capacity packaging material widely used in fields such as cement, fertilizers, feed, and chemical raw materials. With the continuous improvement of packaging appearance requirements in the market, the printing quality of plastic woven bags has also been valued by users. Below, we will discuss the application of flexographic printing on plastic woven bags.
Characteristics of flexographic printing technologyFlexographic printing technology, as an efficient and environmentally friendly printing method, is mainly characterized by the following aspects:
1. progressiveness of printing principle: Flexographic printing uses flexible plates, and the ink volume is accurately controlled through anilox rolls to achieve accurate transmission of graphic information. This printing method not only ensures the clarity of printed materials, but also greatly improves printing efficiency.
2. Environmental friendliness of ink: Flexographic printing usually uses water-based ink, which has the characteristics of low volatility, non-toxic and harmless, and meets the demand of modern packaging industry for environmentally friendly materials. The drying speed of water-based ink is also very fast, which is conducive to achieving high-speed printing.
3. Flexibility of printing plates and equipment: Flexible printing plate materials are soft and bendable, and can adapt to various complex shapes of substrate surfaces. The flexible design of flexographic printing machines enables easy implementation of multi-color printing and online post-processing, meeting the diverse printing needs of plastic woven bags.
4、 Advantages and disadvantages of flexographic printing on plastic woven bags
advantage1. Environmental friendliness:
Flexographic printing mainly uses water-based or alcohol soluble inks, which have low volatility, are non-toxic and harmless, are environmentally friendly, and meet the modern packaging industry's demand for environmentally friendly materials. At the same time, this also means that there will be no harm to the health of printing workers, reflecting the characteristics of green printing.
2. Strong printability:
Flexographic printing can easily handle substrates with rough surfaces and strong ink absorption, such as plastic woven bags. Due to its soft and bendable printing plate, it can tightly adhere to the surface of woven bags, thereby achieving high-quality printing effects.
3. High printing quality:
The ink layer of flexographic printing is thick, the colors are bright, and the saturation is high, which can fully display the details and layering of graphic and textual information. This makes the patterns and text printed on woven bags clearer and more eye-catching, enhancing the product's aesthetics and market competitiveness.
4. High production efficiency:
Flexographic printing machines can achieve high-speed, multi-color, and online printing operations, greatly improving production efficiency. For plastic woven bags produced in large quantities, this can significantly shorten the production cycle and reduce production costs.
5. Relatively low cost:
Compared to other printing methods, flexographic printing has relatively lower plate making processes, ink consumption, and scrap rates, which helps to reduce overall printing costs.
6. Good flexibility:
Flexographic printing can adapt to a variety of printing materials and woven bags of different thicknesses, and can also achieve a combination of various printing processes, such as hot stamping, laminating, etc., to meet the diverse needs of customers.
shortcoming1. Relatively low resolution:
The resolution of flexographic printing is relatively low compared to some high-precision printing methods such as gravure printing, which may result in unclear details when printing some fine patterns or text.
2. High requirements for preprocessing:
To ensure printing quality, plastic woven bags need to undergo appropriate pre-treatment before printing, such as corona treatment to increase surface tension.
3. High skill requirements for operators:
The operation of flexographic printing machines is relatively complex, requiring operators to have high professional skills and experience. This includes adjusting printing process parameters, monitoring printing quality, and troubleshooting and handling equipment failures.
Practical application case of flexographic printing on plastic woven bags
Application Case of Satellite Flexographic Printing Machine for Woven Bags
Application scenario: Multi colored patterns and text printing on the surface of plastic woven bags
Equipment and Technology:
• Equipment: Satellite flexographic printing machine
The feature of this device is that there is a large-diameter circular impression cylinder in the middle (rotating on its own), surrounded by multiple printing color units (each rotating), which together form a satellite surround printing structure. This design can complete multi-color printing in one go, greatly improving production efficiency.
• Technology:
High definition dot technology: During the printing process, using high-definition dot technology can significantly improve the printing effect, making patterns and text clearer and more delicate. The interweaving of large and small dots not only enhances the layering of printed materials, but also improves the overall restoration effect of the layout.
Printing effect and advantages:
High printing quality: Due to the thick ink layer, bright colors, and accurate overprinting of flexographic printing, the patterns and text printed on woven bags have strong three-dimensional sense and high clarity.
High production efficiency: Satellite flexographic printing machines can achieve high-speed, multi-color, and online printing operations, significantly shortening the production cycle.
• Environmental friendliness: Printing is carried out using water-based or alcohol soluble inks, which have low volatility, are non-toxic and harmless, and meet the modern packaging industry's demand for environmentally friendly materials.
Cost control: Flexographic printing has relatively low plate making processes, ink consumption, and scrap rates, which helps to reduce overall printing costs.
flexographic printing technology has broad application prospects and significant advantages in the printing field of plastic woven bags. With the continuous advancement of technology and changes in market demand, flexographic printing technology will play a more important role in the printing field of plastic woven bags.
Huizhou Zhongzhixing specializes in producing
flexographic water-based ink with stable quality, safety and environmental protection. It has passed the EU SEARCH SVHC236 testing. When used for printing plastic woven bags, it has good adhesion. Vibrant colors and high glossiness. If you are also using water-based ink to print plastic woven bags, please feel free to inquire.
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