In today's advertising and marketing, PVC flexible banners have become the first choice of many businesses and event planners for their lightness, durability and easy installation. However, it is not easy to maintain the clarity, color vividness and restoration of banner patterns under high-resolution printing. Behind this, in addition to advanced printing technology and equipment support, it is inseparable from the strict selection and control of the substrate-PVC film.
As the core material of PVC flexible banners, the quality of PVC film directly determines the quality of printing. Therefore, when choosing PVC film, we must put quality first to ensure that it can meet the requirements of high-resolution printing.
High-quality PVC film should have good surface tension. Surface tension is one of the key factors affecting ink adhesion and pattern clarity. If the surface tension of the PVC film is insufficient, the ink is prone to diffusion and uneven penetration during printing, resulting in blurred patterns and loss of details. On the contrary, when the surface tension of the PVC film is moderate (generally requiring a surface tension of more than 38), the ink can be evenly and firmly attached to the film surface, forming a clear and sharp pattern edge, thereby ensuring the high quality of the printing effect.
In addition to surface tension, ink adsorption capacity is also an important indicator for measuring the quality of PVC film. High-quality PVC film should have good ink adsorption, be able to quickly and evenly absorb printing ink, avoid ink accumulation or flow on the film surface, and ensure color uniformity and saturation. At the same time, good ink adsorption can also increase printing speed, reduce production costs, and bring greater economic benefits to merchants.
Anti-aging performance is another important characteristic of PVC film that cannot be ignored. Since PVC flexible banners often need to be used outdoors and exposed to natural environments such as sunlight, wind and rain for a long time, if the anti-aging performance of the PVC film is not good, it is easy to fade, embrittle, crack and other problems, which seriously affect the service life and publicity effect of the banner. Therefore, when choosing PVC film, we must ensure that it has good weather resistance and UV resistance, can resist the erosion of the natural environment, and maintain the long-term beauty and durability of the banner.
In order to achieve the above goals, when choosing PVC film, we should comprehensively consider its raw materials, production process, thickness, width and other aspects. High-quality raw materials are the basis for producing high-quality PVC film, and advanced production technology can ensure that the various performance indicators of PVC film reach the best state. In addition, according to the specific use scenarios and needs of the banner, we can also choose PVC films of different thicknesses and widths to meet the hanging and display requirements of different occasions.
Of course, in addition to choosing high-quality PVC films, we also need to pay attention to some details in the printing process. For example, the PVC film should be fully pre-treated before printing to ensure that its surface is clean, oil-free and dust-free; the amount of ink and printing speed should be controlled during printing to avoid too much or too little ink resulting in poor printing effects; after printing, the banner should be cured and post-processed in time to improve its weather resistance and service life.
