Tonnage bags, also known as flexible container bags, space bags, etc., are medium-sized bulk containers, a kind of container unit equipment, equipped with cranes or forklifts, can realize container unitized transportation.
It is easy to load and transport bulk powdery materials that have the characteristics of large volume, lightweight, and easy loading and unloading. It is one of the common packaging materials. It is characterized by simple structure, lightweight, foldable, small space occupied by emptying, and low price.
The raw material of the ton bag is plastic, mixed with some stable condiments, and the plastic film forming filament is manufactured by the machine and then heated and shaped to grow and extend PP. Then through the process, the base fabric of the plastic woven silk cloth is made, and the sling and other accessories are combined to form a big bag.
Chemical raw materials, pharmaceutical raw materials, plastic raw materials, food additives, feed additives, metallurgical powders, ore powders, refractory materials, etc. are all suitable for ton bag packaging.
The quality of the ton bags is very important. Therefore, there are strict standards for big bags products in the international market. For example, Japan pays attention to details, Australia pays attention to form, and the European Community standards pay attention to product performance and technical indicators, which are concise. The U.S. and Europe have strict thresholds for the UV and anti-aging of the ton bags.” Safety factor” is the ratio between the maximum bearing capacity of the product and the rated design load. It mainly depends on whether there are any abnormalities in the contents and the bag body, and whether the joints are damaged or not. In similar standards at home and abroad, the safety factor is generally set at 5-6 times. The service life of the bagged product with five times the safety factor is safe to use. If anti-drug additives are added during production, the application range of ton bags will be earlier, so there will be women with adsorbents on the market.
What needs to be paid attention to in chemical design of ton bags?
- When designing, it is necessary to consider the packaging volume per ton, the weight of the load, and the number of packaging units, as well as the distance of transportation, the number of transportations, and the means and methods of transportation used. The technical index requirements of the base cloth and sling have strict regulations;
- Tons of packaging bags should be based on the user’s conditions of use, reasonable selection of materials, and reasonable ratio. The anti-aging ability of plastic products under sun exposure is a concern at present, and a problem often encountered during the transportation of cadmium products;
- It is necessary to fully consider the specific ways and methods of customers using large bags. Manufacturers of large bags of cadmium ore include lifting, transportation, and loading material performance.
What are the principles for designing tonnage bags?
The first is safety. In the design, the packaging volume, the weight of the contents, and the number of packaging units must be considered, as well as the distance of the transportation and the number of transportations, as well as the means of transportation and transportation methods to be used. The technical indicators of container bags, base fabrics, and slings are required to have national standards; From a safety point of view, it is clear that the FIBC structure is all bottom hanging structure. The safety factor must reach 1.8.
The second is safekeeping. According to the user’s conditions of use, the materials should be selected reasonably and the ratio should be reasonable. Plastic products are also prone to produce equipment when exposed to the sun, which is a problem often encountered during the use of the big bag. In the process, select materials that improve its anti-production performance
The third is usability. When manufacturing ton bags, it is necessary to clarify the specific ways that customers use ton bags, such as transportation methods and raw material bag performance. In addition, we must also consider what the contents are and whether the material of the bag guarantees the safety of the contents. The last point is tightness. Different packaging materials have different sealing requirements. For example, powders, toxic materials, and articles that are afraid of being contaminated have very strict requirements on sealing performance, and materials that are prone to moisture or mildew also have special requirements for airtightness. Therefore, when designing the FIBC, pay attention to the influence of the base fabric laminating process and the sewing process on the airtightness.
What are the advantages of aluminum big bags to make them widely used?
The biggest advantage of the aluminum foil in the aluminum foil bag is that it blocks oxygen and is waterproof, which can guarantee the quality of the product. Secondly, the aluminum foil in the aluminum foil bag can withstand up to 125 degrees Celsius, has a good gloss, will not change its shape at high or low temperatures, and is suitable for high-temperature cooking. It has three functions: anti-static, moisture-proof, and electromagnetic interference prevention. Aluminum big bag surface: excellent printing and decoration, strong heat resistance; wear resistance, puncture resistance, etc., to protect the middle layer; when the double layer is compounded, the surface layer also acts as a barrier layer. Intermediate barrier layer: It is good to prevent the penetration of internal and external gas or liquid; good light-proof (except for transparent packaging); the barrier layer should be as close as possible to the packaged object. Inner layer: non-toxic material that meets international standards; chemically inert, does not interact with the packaging to cause corrosion or penetration; good heat-sealability; good mechanical strength; good inner surface smoothness; good heat resistance or Cold resistance; when used as a transparent packaging, the inner seal has better transparency. Commonly used materials include PE, PP, EVA, etc.