How to achieve the waterproof function of non-woven bags?

Generally speaking, when non-woven bags are produced, the printing process has silk screen printing or offset printing. These two printing processes have no special changes to non-woven fabrics. For environmentally friendly ink printing, the printed pattern of the environmental protection bag will be washed away after washing. Non-woven fabric lamination is a production process different from screen printing. Its characteristic is that the printed pattern can reach the photo-level effect, and it can print various complex color patterns. It is covered with a non-woven fabric surface Layer PP film, so that the non-woven fabric has also been greatly improved in terms of firmness. At the same time, the non-woven fabric can also be waterproof, and the printed patterns on its surface will not fade due to washing. Therefore, it is this layer of coating that actually plays a role in it. The reason why the patterns of those eco-friendly bags we usually use will not fade and are waterproof is largely due to its real role in this.
So the waterproof function of non-woven bags is realized in this way, so it is a good choice for people.