The design of bulk bags must strictly follow the national standard GB/T10454-2000. As export packaging, bulk bags must ensure that the exported goods are effectively protected during loading, unloading, transportation and storage, and that the goods are transported to the destination intact.
Therefore, the design of bulk bags must meet four key points, namely safety, storage, usability and sealing.
■ Safety
Mainly refers to the strength of the bulk bag. When designing, the packaging volume, the weight of the load and the number of packaging units must be considered. It is also necessary to consider the distance of transportation and the number of times of handling, and what kind of transportation tools and methods to use. In the national standard GB/T10454-2000 for bulk bags, the technical indicators of the base fabric and slings of the bulk bags are strictly stipulated. From a safety perspective, it is clarified that the structure of the bulk bags is all bottom hanging structure. The safety factor must reach 1.8.
■ Storage
Material selection and proportioning should be reasonable according to the user's use conditions. The anti-aging ability of plastic products under sunlight exposure is a relatively concerning issue, and it is also a problem often encountered in the actual use of container bags. Pay attention to the use of anti-purple agents and the selection of materials during the production process.
■ Usability
When designing container bags, the specific ways and methods of using container bags by customers should be fully considered, such as lifting, transportation methods, loading material performance, etc. In addition, it is also necessary to consider whether it is food packaging, and whether it is non-toxic and harmless to the packaged food.
■ Sealing
Different packaging materials have different sealing requirements. For example, powders or toxic items, items that are prone to contamination 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 container bags, pay attention to the influence of the base fabric laminating process and sewing process on sealing.