Several problems that should be paid attention to in the design of container bags by the packing bag manufacturer

Container bags manufacturer's high quality container bags. According to the principles and principles, the GB / T10454 2000 standard must be strictly implemented in order to ensure that the packaged export goods are intact in the process of loading and unloading, container bags transportation and storage. The design of container bag should consider the following 4 main points, that is, safety, keeping, usability and sealing. When designing the structure of container bags, the national standard stipulates that the waist hoop strength reaches 2 times the strength of the base cloth, but the actual design effect is not good. Because the strength between the base cloth and the waist hoop is not consistent, the base cloth is cracked first. In the design, the waist hoop and the base cloth are selected with the same strength of the base cloth, which can avoid this problem. With the continuous growth of the international market demand for container bag, container bag of Chinese exports increase further. At the same time, the international market for the quality of the product container requirements become more stringent, so how to improve the product container strength, reasonable selection, reasonable formulation, how to combine the container bag of high quality in the enterprise actual situation design the premise of the implementation of national standards, is an important issue facing container manufacturing enterprises. This paper puts forward some problems needing attention in the design of the container bag.

Safety mainly refers to the strength of the collection bag. When designing container bags, we should consider the volume of packing, the weight of loading, and the number of packing units. We also need to consider the distance and the number of transportation, and what kinds of means of transportation and transportation are adopted. In GB / T10454 - 2000, the technical specifications of the base cloth and sling are strictly stipulated. From the safety point of view, it is clear that the structure of the packing bag is all the bottom hanging structure, and the safety factor must reach 1:6.

The storage bag manufacturer should choose the material reasonably according to the user's / H condition, and the reasonable process ratio. Such as plastic materials in the sun under the anti aging ability is an important index of decision quality is the container bag, container bag in the actual use of the process often encountered problems, so in the production process should pay attention to the use of anti UV agent and selective ultraviolet radiation resistant materials. When designing container bags, we should give full consideration to the specific ways and methods for customers to use container bags, such as lifting, transporting and loading materials. In addition, it is also necessary to consider whether the goods in the package are food or not, to ensure that there is no adverse effect on the packaged food.

Sealing packaging materials to be different, different sealing requirements, such as powder or toxic substances, if contaminated goods is very strict on the sealing performance requirements of special materials; easy to damp or moldy also have special requirements for air tightness, so in the design of container bags, pay attention to consider the impact of base cloth and sewing process of laminating process sealing property.

Attention should be paid to the problems of container manufacturers. First, we should make clear the weight of the cargo and make sure the volume of the container according to the proportion of the materials that we should pay attention to when selecting the material for the base cloth. It also depends on whether the loading material is sharp and hard lump material, for example, when designing a bag, the material should be thicker and thinner on the contrary. In the actual design, container loading 500kg, general selection of fabric (150 - 170) G / m2 Kieb, longitudinal and transverse tensile strength (1470 - 1700) N / 5cm, elongation of 20% - 35%; load more than 1000kg container bags, cloth is generally used (170 - 210) G / m2, MD / transverse tensile strength (1700 - 2000) N / 5cm, elongation of 20% - 35%.

Sewing process design in accordance with the national standards and regulations of sewing requirements, but also consider the influence of aging resistant performance and suture needle on fabric tensile strength. In packing powder, toxic, afraid of contaminated materials, the first to solve the problem of sealing. Therefore, in the actual design, the use of coarse thread fine needle or the use of non-woven fabric and base cloth sewing together, so as to improve the sealing. In addition, when sewing bags, it is required that the sewing thread should choose the polyester line above 18ks to ensure the sewing strength to meet the requirements of the national standard.

Inlet and outlet design in national standard, inlet and outlet cloth of the longitudinal and transverse tensile strength more than 828N / 50mm, but in the actual design of the outlet pressure is larger, can be higher, the inlet strength is low, generally used in laminating fabric (90 - 100) m2.

Other factors in the actual design process, the non - outlet structure of the packaging bag generally can meet the national standard requirements of the safety factor. However, the strength of container bags with discharge ports is generally not up to the standard requirements, which requires increasing the bottom opening strength when designing, such as increasing the thickness of the base of the bag bottom and increasing the reinforcement of the material opening, etc., which can solve this problem. In the actual design process, we should take all indicators into consideration, constantly improve process design, strengthen technological innovation, adopt new materials, new processes and new methods, and seek the best plan in design, and ensure the quality of design. In order to improve the strength of the monofilament, the tensile strength of the silk must be improved. Flat relative strength should reach 0.4N / tex, elongation of 15% - 30%. In the process of actual processing, the amount of the filled material should be strictly controlled, usually around 2%. If too much material is added or regenerated material is added, the strength of the base cloth will be reduced. Therefore, the quality of the raw materials should be strictly controlled and the raw material produced by the regular manufacturers of the national standard is reached by the melting index.

It is very important to select the material of the sling in the design of the collection bag. The national standard specifies the safety factor of 1:6. In the actual design, one should consider the loss of the sewing process to the strength of the sling; two the way of hoisting should be considered. For example, loading 500kg container bags, sling is generally selected (50 - 60) g / m, pulling force is (1300~1800) N / m, loading 1000kg packing bag, generally choose (60 - 75) g / m, pulling force is in (1800 - 2000) N / m, the sling must meet the requirement of weaving density. In addition, two rings and four rings can be used to increase the tensile strength when the sling is designed.

Adding additives, prolong the service life in order to improve the ageing resistance of feed container bags in the sunlight, in the drawing process to add flat UV resistant agent and stabilizer amount. According to the length of the use period of the bag (half a year or 1 years), the amount of filling is determined, usually between (0.1 - 3)%. Some manufacturers filled with anti aging materials made of stabilizers, anti purple and other additives, and the effect is very good.