Adjustment of the mold when producing stretch film

In the production process of stretch film, molds are needed, but the molds also need to be adjusted. Let's take a look at the relevant knowledge of mold adjustment.

The stretch film tool adjusts the uniformity of product thickness through the control and cooperation of the temperature of the die body and the opening of the die lip. Then, according to the characteristics of different products, different adjustment methods should be used; for unidirectional or biaxial stretching films, the opening of the die lip is much larger than the thickness of the film; in terms of the width of the die lip, appropriate and reasonable adjustments should be made according to the actual production conditions of the product. If the extrusion is uneven, it is seldom to use the fine-tuning screw to adjust the mold at the beginning. After the temperature and extrusion pressure are adjusted evenly and stably, the adjustment is considered when there is still fluctuation or uneven extrusion.

In addition, when the mold mouth is adjusting the mold, attention should also be paid to the adjustment transition of each area to prevent the adjustment screw from being seized.