The production process of geomembrane is divided into two types: one is calendered geomembrane, the other is blown geomembrane process
Due to different geomembrane production processes, the geomembranes produced have their own advantages and disadvantages:
- Calendered geomembrane production process:
Calendered film, also known as laminating film, is a plastic film produced by hot-melt, cast, and cast polyethylene raw materials.
The advantages of calendering geomembrane are high surface brightness, like a mirror surface, and the price is cheaper than blow molding geomembrane; disadvantages: uneven thickness; material strength is not high and brittle.
- Blown geomembrane production process:
Blow molding is also called blown film, which means that polyethylene plastic particles are heated and melted and stretched into a film by air cooling. Plastic processing technology that is blown into film.
The advantages of geomembrane products produced by the blow molding process are stable quality, uniform thickness, high vertical and horizontal tensile strength, and long service life. The disadvantage is that the price is higher than that of calendered geomembrane because it can be blow molded with special materials.