按主要材料构成为聚丙烯袋、聚乙烯袋；按缝制方法分为缝底袋、缝边底袋，目前广泛应用于肥料、化工产品等物品的一种包装材料。 Plastic woven bags are mainly composed of polypropylene bags and polyethylene bags according to the main materials; they are divided into seam bottom bags and seam bottom bags according to the sewing method. They are currently widely used as a packaging material for fertilizers and chemical products.
The evaluation of the aging resistance of plastic woven bags can be measured through artificial accelerated aging experiments and outdoor exposure weather resistance tests. Artificial accelerated aging tests are to place plastic woven bag test samples in test equipment, which can be exposed to light, Under the conditions of oxygen, heat and humidity, under these conditions, the main environmental parameters can be relatively easily maintained, so the data obtained can maintain good repeatability.
According to the above-mentioned products tested after UV accelerated aging, the anti-aging effect will be different when used in a real environment. Especially when the hindered amine light stabilizer is added under the condition of filler, the anti-aging effect is unstable. .Although the outdoor exposure test of the woven bag takes a long time and a large investment of human and financial resources, the obtained test data basically meets the actual use requirements and can be used for the evaluation of the anti-aging quality and the anti-aging effect of the woven bag.
In daily use of woven bags, the external conditions such as the ambient temperature, humidity, and light of the woven bag directly affect the service life of the woven bag, especially when it is placed outdoors and in the open air, rain, direct sunlight, wind, insects, rodents, etc. Will accelerate the damage of the tensile quality of the woven bag.The anti-ultraviolet and anti-oxidation capacity of the woven bag itself needs to be considered in flood-proof and flood-proof bags, coal bags placed in the open air, etc.Ordinary woven bags for household or industrial and agricultural use are best placed indoors in a place free from direct sunlight, dry and free of insects and rodents.