1. From material：The main materials used in express delivery bags are LDPE and HDPE, both of which meet the standards in terms of toughness. In addition to using new materials for express delivery bags, there are also some using recycled materials. The toughness of recycled materials for express delivery bags is slightly worse than that of new materials, and the printing effect is also much worse. Therefore, it is generally recommended to use brand new materials.
2. From thickness: Generally speaking, the thicker the thickness, the higher the material cost. Therefore, choose a suitable thickness of express delivery bags based on the weight and other attributes of the goods shipped by oneself. From the perspective of saving resource costs and reducing delivery weight as much as possible, thinner thicknesses should be chosen.
3. From durability of edge sealing: If the edge sealing of express delivery bags is not firmly adhered enough, it is easy to crack and cannot meet the requirements of shipping safety. It is necessary to choose express delivery bags with stable edge sealing technology and materials, and find a legitimate express delivery bag manufacturer with quality assurance.
4. From destructive properties of sealing adhesive:The thicker the adhesive, the more destructive it is, and the more expensive the adhesive, the more adhesive it can be. To achieve a one-time high destructive sealing effect, it is necessary for the adhesive to be suitable for the characteristics of the material of the express delivery bag itself, especially closely related to the formula of the express delivery bag. Generally, if there is more adhesive, it will be more sticky, and the destructive sealing effect will be better. Another point is that the viscosity of glue is affected by temperature, and it is difficult for ordinary express bags to achieve destructive effects in low temperature environments.
Post time: Aug-25-2023
