Hey there! As a supplier of Normal BOPP Film Jumbo Roll, I've seen firsthand how crucial it is to get the best printing effect on this material. In this blog, I'll share some tips and tricks on how you can improve the printing quality on Normal BOPP Film Jumbo Roll.
Understanding Normal BOPP Film Jumbo Roll
First off, let's talk a bit about what Normal BOPP Film Jumbo Roll is. It's a widely used packaging material known for its transparency, strength, and cost - effectiveness. You can find out more about it on our website: Normal BOPP Film Jumbo Roll.
This film is commonly used in various printing applications, like labels, stickers, and flexible packaging. But getting that perfect print can be a bit tricky. There are several factors that can affect the printing outcome, including the film's surface properties, the printing method, and the ink used.
Surface Treatment
One of the most important steps in improving the printing effect is surface treatment. Normal BOPP film has a relatively low surface energy, which means that ink may not adhere well to it. To solve this problem, you can use corona treatment.
Corona treatment involves exposing the film to a high - voltage electrical discharge. This process oxidizes the surface of the film, increasing its surface energy and making it more receptive to ink. When the surface energy is increased, the ink spreads more evenly and adheres better, resulting in a sharper and more vibrant print.
It's essential to ensure that the corona treatment is done correctly. The treatment level should be monitored regularly to make sure it stays within the optimal range. If the treatment level is too low, the ink may not stick properly. On the other hand, if it's too high, it can damage the film and affect its physical properties.
Choosing the Right Ink
The type of ink you use also plays a significant role in the printing effect. For Normal BOPP Film Jumbo Roll, it's best to use inks that are specifically formulated for polypropylene films. These inks have good adhesion and compatibility with the film surface.
Solvent - based inks are a popular choice for BOPP film printing. They offer excellent print quality, good adhesion, and fast drying times. However, they also have some drawbacks, such as the emission of volatile organic compounds (VOCs), which can be harmful to the environment and human health.
Water - based inks are a more environmentally friendly alternative. They have lower VOC emissions and are safer to use. But they may require longer drying times and may not have the same level of adhesion as solvent - based inks in some cases.
UV - curable inks are another option. They dry very quickly when exposed to ultraviolet light, which can increase the printing speed. They also offer high - quality prints with good scratch resistance. However, the equipment for UV - curable ink printing can be more expensive.
Printing Press Settings
Proper settings on the printing press are crucial for achieving a good printing effect. The pressure between the printing plate and the film should be adjusted carefully. If the pressure is too low, the ink transfer may be incomplete, resulting in a faint or patchy print. If the pressure is too high, it can cause the film to stretch or distort, affecting the registration and overall print quality.
The ink viscosity also needs to be controlled. If the ink is too thick, it may not flow properly through the printing system and can cause clogging. If it's too thin, it may spread too much on the film, leading to a blurry print. You can adjust the ink viscosity by adding solvents or thinners as needed.
In addition, the speed of the printing press should be set according to the type of ink and film. A slower speed may be required for some inks to ensure proper drying and adhesion.
Storage and Handling
How you store and handle the Normal BOPP Film Jumbo Roll can also impact the printing effect. The film should be stored in a cool, dry place away from direct sunlight and moisture. High humidity can cause the film to absorb water, which can affect its surface properties and the adhesion of the ink.
When handling the film, make sure to avoid touching the printing surface with your bare hands. The oils and dirt on your hands can contaminate the film and prevent the ink from adhering properly. Use clean gloves or handling tools instead.
Comparing with Super / Crystal Clear BOPP Film Jumbo Roll
It's worth noting that Super / Crystal Clear BOPP Film Jumbo Roll has different characteristics compared to Normal BOPP Film Jumbo Roll. The super - clear film has a higher transparency and gloss, which can give a more premium look to the printed product.
However, the basic principles of improving the printing effect are similar for both types of films. Surface treatment, ink selection, and proper printing press settings are still key factors. But you may need to adjust some parameters slightly depending on the specific properties of the super - clear film.
Conclusion
Improving the printing effect on Normal BOPP Film Jumbo Roll requires attention to several factors, including surface treatment, ink selection, printing press settings, and proper storage and handling. By following these tips, you can achieve high - quality prints that are sharp, vibrant, and long - lasting.
If you're in the market for Normal BOPP Film Jumbo Roll or have any questions about improving the printing effect, don't hesitate to reach out. We're here to help you get the best results for your printing projects. Contact us for more information and let's start a great partnership for your packaging needs.
References
- Packaging Industry Handbook
- Polypropylene Film Printing Guide
