Application of hydraulic universal testing machine to flexible packaging bags

Packaging bags are familiar to everyone, but often some packaging bags cannot withstand the force and crack at the bottom, which not only affects use, but may even cause pollution. However, the detection equipmentHydraulic universal testing machineThis phenomenon has been explained in detail and the following issues need to be paid attention to.

First of all, special attention should be paid to whether the filling material will contaminate the seal during the filling process. The pollutants can significantly reduce the thermal viscosity or heat seal strength of the material, causing the flexible packaging bag to break due to its inability to bear the load. Special attention should be paid to powder fillings, and corresponding simulation tests are required.

Second, the thermal viscosity and expanded heat seal strength of the material obtained through the selected production line heat seal parameters should be left with a little margin based on the design requirements. It should be analyzed in detail based on the equipment and materials, because the uniformity of both heat sealing components and packaging materials, especially the film materials for flexible packaging will not be very good, and the accumulation error will lead to uneven heat sealing effect at the heat sealing area of ​​the packaging.

Third, through universalMaterial testing machineThe thermal viscosity and expansion heat seal strength of the material can be detected separately. A set of heat seal parameters suitable for specific products and specific production lines can be obtained. At this time, the heat seal curve obtained by the test should be comprehensively considered and selected for the best choice.