Big bag is a kind of flexible transport packaging container. It has the advantages of moisture-proof, dust-proof, radiation-resistant and firm, and has sufficient strength in structure. It has been recognized by many manufacturers. So what are the materials needed in the process of producing large bags?
1. Polypropylene
This is the main material of the big bag, which accounts for about 90% of the weight of the whole bag, but the polypropylene material has high pressure and low pressure, and in the process of use, it is basically a combination of the two. Mainly to consider the angle of its tensile force and service life.
2. Polyethylene
Commonly known as PE, it is also one of the materials that make up the container bag, but the amount added is relatively small. It mainly plays a role of flexibility, similar to the characteristics of elasticity, and the best use is high pressure, and it also has the effect of preventing aging. , convenient for secondary use. Polypropylene is a non-toxic, odorless, tasteless milky white highly crystalline polymer with a density of only 0.90--0.91g/cm3, which is one of the lightest types of all plastics.
3. Filler masterbatch
This is necessary, because the main material of the big bag contains a certain amount of water more or less in the production process, and adding this kind of filler wood can absorb the water well without producing Water eye, resulting in no pull.
The base fabric of the big bag is usually woven by a flat loom or a shuttle circular loom; the rings, slings, and knots are usually completed by a ribbon loom; the sewing thread can be nylon thread, polypropylene thread, polyester thread, and cotton thread; the produced Ganzhou Ton bags are required to have a coefficient of more than 5 times, that is, their pressure resistance must bear five times the strength of the filling weight, and they must have moisture-proof function.
