Nowadays, non-woven bags and eco-friendly bags on the market are very good in terms of quality and the price is not high, but they are basically waterproof. So how do these similar bags of waterproofing work?
Many people may know that non-woven fabrics are environmentally friendly and breathable materials that can be easily decomposed under natural conditions. Usually, non-woven bag factories use these fabrics to make products. The general printing process is screen printing or offset printing. There are no special changes in the printing process for nonwovens. For environmentally-friendly ink printing, the pattern printed on the bags after washing is washed away.
Non-woven cover film is a production process different from screen printing. Its characteristic is that the printed pattern can achieve photo-class effect and can print a variety of complex color patterns. It is covered on the surface of the non-woven fabric. Layer PP film, so that the non-woven fabric has also been greatly improved in terms of firmness, while the non-woven fabric can also play a waterproof feature, the surface of the printing pattern will not fade due to washing.
Therefore, the actual role in this layer of film is that the green bags that we usually use are patterns that do not fade and are waterproof. To a large extent, they rely on it to play a real role in this.
This information comes from China Packaging Bags Trading Network
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