How to identify the 6 elements of high-quality FIBC
The ton bag is a flexible transport packaging container with the advantages of moisture-proof, dust-proof, radiation-resistant, firm and safe. It can be widely used in the packaging of various powder, granular and bulk items such as chemicals, building materials, plastics, and minerals. It is an ideal product for storage, transportation and other industries. However, in view of the current economic environment in our country, it is necessary for us to learn more about the knowledge of ton bags to improve our identification ability.
Shandong Guansong Packaging Co., Ltd. is located in Zibo City, the national plastic capital. It is a comprehensive enterprise integrating the production, research and development and sales of ton bags and container bags. As a well-known ton bag manufacturer and container bag manufacturer in Zibo City, it has first-class production equipment and technical force, stable and reliable product performance, convenient construction, and is the first choice for national projects. For the identification of tons of bags, the following aspects can be considered.
1. Base fabric material
When designing a ton bag, first understand the weight of the loaded goods, and determine the volume of the ton bag according to the specific gravity of the packaged material. It also depends on whether the loaded material is a sharp and solid block material. If so, the base fabric should be a little thicker when designing a ton bag, and a little thinner on the contrary. In practical design, for ton bags with a load of 500kg, the base fabric is generally (150-170) G/m2, the longitudinal and transverse tensile strength of the base fabric is (1470-1700) N/5cm, and the elongation is 20-35%. Tons of bags with a load of more than 1000kg. The base fabric is generally selected (170~210) G/m2, the longitudinal and transverse tensile strength of the base fabric is (1700-2000) N/5cm, and the elongation is 20~35%.
2. Structural design
When designing the ton bag structure, the national standard stipulates that the strength of the waistband should be more than twice the strength of the base fabric, but in practice this design effect is not good, because the strength of the base fabric and the waistband are not the same, causing the base fabric to crack first. In the design, the waistband and the base fabric are made of base fabrics with opposite strengths, which can prevent this problem.
3. Sewing process
In addition to the sewing requirements according to the national standard rules, the ton bag also needs to consider the aging resistance of the stitching and the effect of the sewing on the tensile strength of the base fabric. When packaging powdery, toxic, or decontaminated items, the first thing to do is to deal with airtightness. Therefore, in the practical design, the ton bag is sewn with thick thread and fine needle or non-woven fabric and the base fabric to improve the tightness. In addition, when sewing ton bags, it is required to use polyester thread with a strength of more than 18kg to ensure that the sewing strength reaches the national standard.
4. Monofilament strength
To ensure the strength of the base fabric for the ton bag, the tensile strength of the flat yarn must be improved. The absolute strength of the flat wire should reach more than 0.4N/tex, and the elongation rate should be 15-30%. In the actual production and processing process, it is necessary to strictly control the amount of filler masterbatch, usually about 2%. If the masterbatch is excessively added, or the recycled material is added, the strength of the base fabric will be reduced. Therefore, the quality of raw materials should be strictly controlled, and the ton bag should be made of drawing raw materials produced by regular manufacturers whose melt index reaches the national standard.
5. Lifting belts material selection
In the design of ton bags, the selection of sling materials is crucial. The national standard clearly stipulates a safety factor of 1:6. In the practical design of ton bags, firstly, we must consider the loss of the strength of the sling during the sewing process, and secondly, we must consider the hoisting method. For example, for a ton bag with a load of 500kg, the sling generally uses (50-60) g/m, and the tensile force is (1300-1800) N/m; )N/m, the request sling must reach the weaving density request. When designing a sling for a ton bag, two or four rings can be used to increase the tensile strength.
6. Whether to add additives
In order to improve the anti-aging ability of plastic ton bags under sunlight, a certain amount of anti-violet agent and stabilizer should be added in the flat yarn drawing process. According to the length of the service period of the ton bag (six months or one year), the amount of addition is determined, usually between (0.1~3)%. Some companies add anti-aging masterbatch made of stabilizer, anti-violet agent and other additives, and the effect is also very good.
