In today's market, non-woven and eco-friendly bags have become popular due to their high quality and affordable prices. However, most of them are designed to be waterproof. But how exactly do these bags achieve such water resistance?
Many people are familiar with non-woven fabric as an environmentally friendly, breathable material that can break down naturally over time. These materials are commonly used by manufacturers to produce bags. The typical printing method involves screen printing or offset printing, and there’s usually no special modification needed for the process when working with non-woven fabrics. However, when using eco-friendly inks, the printed design may fade or wash away after a few washes.
To solve this issue, some manufacturers use a different technique called "non-woven cover film." This method allows for high-quality, photo-like prints with intricate color patterns. A thin layer of PP (polypropylene) film is applied on top of the non-woven fabric, enhancing its durability and providing a waterproof surface. Additionally, the printed design remains intact even after repeated washing, making it much more long-lasting than traditional printing methods.
As a result, the waterproof and fade-resistant features of many eco-friendly bags are largely due to this protective film layer. It plays a crucial role in ensuring that the bags remain functional and visually appealing over time.
Whether you're looking for sustainable shopping solutions or practical storage options, understanding the technology behind these bags can help you make a more informed choice.
This information is provided by China Packaging Bags Trading Network.
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