Some Common Sense of Plastic Woven Bags
Plastic woven bags mainly include polypropylene bags and polyethylene bags. Currently, it is widely used as a packaging material for express delivery packaging, fertilizers, cement, rice, chemical products, and other items. The aging resistance of plastic woven bags can be evaluated through artificial accelerated aging tests and outdoor exposure weathering tests. In artificial aging experiments, placing plastic woven bag samples in the testing equipment can be affected by factors such as light, oxygen, heat, and humidity simultaneously or alternately. Under these conditions, the main environmental parameters are relatively stable, so the obtained data can maintain good repeatability.
Advantages of environmentally friendly plastic woven bags:
1. Water solubility speed can be designed and selected, completely soluble in water, non-toxic and pollution-free;
2. High transparency, good glossiness, high softness, good hand feel, oil and solvent resistance;
3. It can be heat sealed, printed, with low air permeability and good air resistance. It can be added with plastic snap buckles or adhesive bags, with excellent anti-static performance;
4. No dust suction, strong tensile strength, good tensile strength, strong resistance to most plastic corrosion, no reaction with acid or alkali, and good insulation;
5. Environmentally friendly plastic woven bags can be degraded by water, air, sunlight, and biodegradation. Usually, it can be decomposed into harmless substances within about a month, reducing environmental pollution.
Plastic woven bag manufacturers believe that after the lifting of the bag weight limit for new plastic woven bags, new plastic woven enterprises will try their best to increase the "filling amount" to increase the strength of the flat wire, in order to meet the physical performance indicators of the new standard. In this way, new plastic weaving enterprises first consider the strength of the flat wire pulled out by the drawing machine, and will choose a drawing machine with high flat wire strength to save raw materials. Therefore, it will stimulate the demand for new plastic weaving wire drawing machines and promote the promotion of low-end wire drawing machines.
The manufacturers of plastic woven bags believe that especially the high-speed wire drawing machine with melt Booster pump, whose linear speed can reach more than 500m/min, will be more and more popular with new plastic woven enterprises, because the high-speed wire drawing machine with melt Booster pump can compress the melt, and the strength of flat wire is 5-8% higher than that of the wire drawing machine without melt Booster pump, whose linear speed is 230-280m/min. After the implementation of new plastic weaving, it will promote the high-end development of new plastic weaving machinery in China.
Plastic woven bag manufacturers believe that after the lifting of bag weight restrictions for new plastic woven bags, new plastic woven enterprises using recycled materials will urgently demand to improve the strength of flat wires and promote the improvement, promotion, and transformation of low-end wire drawing machines. If low-end wire drawing machines are not improved and upgraded, the plasticizing effect is poor, and the flat wire strength is low, new plastic weaving enterprises that continue to use new materials and good materials cannot produce flat wires with good strength will abandon this wire drawing machine, and this market will shrink.
Plastic woven bag manufacturers believe that the winding machine also needs to improve product quality and upgrade products. For the combined cam winding machine, because of its poor formability, low yield, Polymer degradation, and the strength of flat wire after repeated use, the market has shrunk in recent years. After the implementation of the new plastic weaving standard, it will shrink even more severely and be eliminated by the market.