無紡布袋為什么能防水

　　現在市場上的無紡布袋和環保袋，質量上都十分不錯，價錢不高，但基本都有防水的作用。那么，這些類似袋子的防水作用是怎么做到的呢？
　　Nowadays, non-woven bags and environmental protection bags on the market are of good quality and low price, but they are basically waterproof. So, how can these bags be waterproof?
　　可能很多人都知道無紡布是一種環保透氣的材料，自然環境下比較容易分解，通常無紡布袋廠都直接用這種布料來制作產品，一般的印刷工藝有絲印或者膠印，這兩種印刷工藝對無紡布沒什么特殊的改變。對于環保水墨印刷來說，環保袋通過水洗后印刷的圖案會被沖洗掉。
　　Maybe many people know that non-woven fabric is an environmentally friendly and breathable material. It is easy to decompose in natural environment. Usually non-woven bag factories use this material directly to produce products. The general printing process includes silk or offset printing. These two printing processes have no special changes to non-woven fabric. For environmentally friendly ink printing, the printed pattern of the environmental bag after washing will be washed out.
　　無紡布袋覆膜是一種不同于絲網印刷的生產工藝，它的特點是印刷的圖案能達到照片級的效果，能印刷各種復雜的彩色圖案，它是在無紡布的表面覆蓋一層PP薄膜，這樣無紡布在牢固性方面也得到了很大的改善，同時無紡布還能起到防水的特點，其表面的印刷圖案不會因水洗而褪色。
                                  
　　Non-woven bag film covering is a kind of production process different from screen printing. Its characteristics are that the printed pattern can achieve photo-level effect and print various complex color patterns. It is covered with a layer of PP film on the surface of non-woven fabric, so that the firmness of non-woven fabric has been greatly improved. At the same time, non-woven fabric can also play a waterproof feature, and the printed pattern on its surface can also be printed. It will not fade due to washing.
　　所以，實際在其作用的就是這層覆膜，我們平時用的那些無紡布袋子之所以圖案不會褪色，又能防水，很大程度上都是靠它在這之中起到真正的作用。
　　Therefore, in fact, the role of this layer of film, we usually use those non-woven bags design will not fade, but also waterproof, to a large extent, depending on it to play a real role in it.