The rationality of the design of conducting tons of bags in the container to use safe, firm, reasonable have great influence, conducting tons of bags as in the past, serious scientific and rational design of flexible container bag, to provide customers with, when conducting tons of bags design should be based on the condition of using the user data, choose reasonable, reasonable ratio. The anti aging ability of plastic products under sun exposure is the question which is attached importance to at present, and it is also a question which is often encountered in the process of practical application. In the process of production, pay attention to the use of anti purple agents and the selection of information.

In order to progress the ageing resistance of conductive tons of bags in the sunlight, in the flat tensile technology to fill plus UV resistant agent and stabilizer amount. According to the length of the application period (half a year or one year) of a ton of bags, the increase is determined, usually between (0.1~3)%. Some companies add anti-aging masterbatch made of stabilizers, anti violet and other additives, and the effect is excellent. When planning the packing bag, we should fully think about the specific methods and methods of using tons of bags by customers, such as lifting, transporting, loading material and so on. Other thinking is not for food packaging, to think of the food is non-toxic and harmless.

The packing material is different, the sealing demand is different. Conductive tonnage bags, such as powder or toxic substances and articles that are afraid of being contaminated, are very strict in sealing function. There are special requirements for tightness of materials that are simply damp or mildew. So when planning a ton of bags, pay attention to the influence of the film covering technology and sewing technology on the seal.

When planning tonnage bags, the strength of the waist hoop should reach more than two times of the base cloth in the national standard, but the effect of such planning is not good, because the strength of the base cloth is different from that of the waist hoop, causing the base cloth to crack first. In the planning, the waist hoop and the base cloth to choose the same strength of the base cloth material, can prevent this question.

Sewing technology planning

In addition to the sewn demand according to the rules of the national standard, the tonnage bag also considers the effect of the aging resistance and seams on the tensile strength of the base cloth. In packing powder, toxic, and afraid of contaminated goods, first of all to deal with the sealing question. Therefore, in the practice planning, the ton bag is selected with the coarse thread or the non-woven fabric and the base cloth to sew together, so as to make the sealing progress. In addition, when sewing tons of bags, the demand for sewing thread is necessary to reach the polyester line above 18kg to ensure that the sewing strength reaches the national standard.

Entrance and exit planning

The national standard rules in the inlet and outlet of longitudinal and transverse tensile strength of the fabric is more than 828N / 50mm, but in the practice of planning, because the outlet can accept large pulling force, high, feeding intensity can be low, usually coated fabric (90 - 100) S / m2.

Other elements

In the process of planning and testing, the tons of bags without the bottom hanger of the feed intake usually reach the safety factor demand of the national standard rules. However, the strength of a ton bag with a discharge port is usually not up to the standard, so it is necessary to think about increasing the bottom opening strength when planning, such as increasing the thickness of the base of the bag bottom, increasing the material reinforcement and so on.

To sum up, in the process of practical planning, tons of bags should be summarized and reflected in various objectives, constantly improving technological planning, strengthening technological innovation, selecting new materials, new technologies and new methods, seeking the best plan in planning and ensuring the quality of planning.

Questions to be paid attention to in planning tons of bags

Four, make good selection of base cloth

When planning a flexible packing bag, the weight of the cargo is first defined, and the volume of the bag is determined according to the proportion of the material contained in the package. It also depends on whether the loading material is a sharp, solid lump material. For example, the material should be thicker and thinner on the contrary. In practice planning, a ton bag with a load of 500kg is usually selected (150-170) G / m2, the longitudinal and transverse tensile strength of substrate is 1470-1700 N / 5cm, and the elongation is 20-35%. Tons of bags carrying more than 1000kg. The base cloth is usually (170~210) G / m2, base cloth longitudinal and transverse tensile strength (1700-2000) N / 5cm, and elongation 20~35%.

Progressive monofilament strength

Tons of bags to ensure the strength of conductive fabric, the tensile strength is necessary to progress the flat wire. Flat relative strength should reach 0.4N / tex above, elongation of 15-30%. In the process of production and processing, the dosage of filled material should be strictly controlled, usually at about 2%. If the material increases too much or increases the regenerative material, the strength of the base cloth will be reduced. Therefore, the quality must be strictly closed on the material, and the pouch is selected by the melt index to the standard manufacturer produced by the national standard.

Five, select the good sling material

In the planning of conducting ton bag, the material selection of the sling is very important. The national standard clearly rules the safety factor of 1:6. In the practical planning of tons of bags, one should think about the loss of the sewing process to the strength of the sling; two to think about the method of hoisting. For example, loading 500kg ton bag, suspender is usually selected (50 to 60) g / m, pulling force is (1300-1800) N / m, the ton bag of loading 1000kg is usually selected (60-75) g / m, pulling force (1800-2100) N / m, demand sling is necessary to reach weaving density demand. Two rings and four rings can be used to increase the tensile strength of a ton bag.