Main Technical Parameters of the Equipment
The stretch film machine consists of a main unit, auxiliary units, and an electrical control system. Core components include a T-shaped die head with a double-throttling design and an alloy screw to improve film thickness accuracy and plasticization uniformity.
Basic Process Parameters
1. The stretching temperature is generally controlled between 85-90℃, but can be adjusted appropriately depending on the equipment and the desired stretching effect.
2. The stretching die should ideally be an arc-shaped die to ensure sufficient thickness at the four corners after stretching, reducing air leakage due to damage after packaging and ensuring the shelf life of the product inside.
3. The heat-sealing temperature is generally controlled between 125-130℃. While ensuring heat seal strength, the heat-sealing temperature should be kept as low as possible to avoid stretching deformation, shrinkage, folding, sticking, and incomplete sealing during the heat-sealing process.
