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Plastic Woven Bags Of Raw Materials Knowledge Of Goods
Jul 20, 2017

It is well known that the raw materials of plastic woven bags are mainly composed of polypropylene, polypropylene (PP) is a monomer produced by the polymerization of propylene resin. According to the molecular position of -CH3 in the polypropylene molecule, it can be divided into isotactic polypropylene, syndiotactic polypropylene and random polypropylene. Peace and so on as the main ingredient. PP performance by molecular weight and molecular weight distribution of different, county and three-dimensional regularity are closely related. Due to the structural regular and highly crystalline, which is characterized by high softening point, continuous use of the temperature of 100-120 ℃, melting point up to 167 ℃, excellent heat resistance, the product can be steam sterilization. Corrosion resistance, tensile strength of 30MPa, strength, rigidity and transparency are better than poly-ene, with excellent wear resistance and dielectric, chemical stability. The disadvantage is poor resistance to low temperature impact, easy to aging, 朡, high electrostatic, but can be added by light stabilizer, antioxidant, antistatic agent, antibacterial agent and other additives to improve its performance. PP plastic woven bags are isotactic polypropylene as raw material, isothed general requirements greater than 95%, the molecular weight and molecular weight distribution has specific requirements, usually using "drawing grade" or "narrow band" polypropylene as raw material.

Composite plastic woven bags coating material is a smaller molecular weight polypropylene, usually using "coated grade" polypropylene as raw material. In order to achieve better strength of the woven bags, polypropylene is usually used as raw material woven bags and coated production process.

According to a report released by a German company, by the strong growth of emerging markets such as plastic woven bags, by 2019, global polypropylene (PP) market sales will reach 155 billion US dollars. Asia-Pacific countries now account for more than half of global sales of polypropylene, becoming the more important polypropylene sales market. In the future, the proportion of the Asia-Pacific region will be further expanded. The report said that global polypropylene production capacity is expected to increase to more than 23.5 million tons in 2019, of which 57% will come from the Asia-Pacific region.