Generally, complex packing bags/sacks consists of 2-layer of national standard bag-making paper inside and outside, between which is a glued net vinylon water-soluble yarn, thus combining three into one. Without condensations aldehyde treatment, vinyoln water-soluble yarn can be dissolved in 80℃ water, so the used bags can be recycled and without environmental pollution after going through hydrolysis .
In addition, the bags have good features of Dampproof packing, Heat resisting, Anti-aging, High strength, Lower broken rate, palletizing without slipping, Saving raw material. The used sack can be recycled easily.