Automatic Laminating Process

The lamination process is the application of a layer of plastic film to sheet material such as kraft paper or woven plastic, which makes it waterproof, steam or air. Previously, plastic woven packaging products used an inner liner in the form of a plastic film bag as the inner layer of the plastic woven sack to prevent leakage or contamination of air, water vapor or water. However, nowadays, the trend is shifting to laminated plastic woven sacks.

The lamination process occurs when liquid polypropylene material flows in the extruder barrel, is pressed by the screw, and comes out through the die lip to adhere to a sheet of material of a certain width. The material pushing the screw in the barrel cylinder is designed in such a way that when pushing the material, mixing and pressing of the material occurs towards the T-die.