Film Extrusion and Why Is It important

Plastic fim extrusion is one of the most significant procedures in sipping and product manufacturing industries. It produced about 25% of all the thermoplastics used in the industry, especially food packaging while the rest of the extruded films are uilized in construction and agricultural machinery. During the process of plastic film extrusion, the molten polymer is pushed through a circular die. The process is repeated regularly and produces products of the same quality and precise gauge.The production of very thin gauge films involves blown film extrusion or cast film extrusion. Different types of high-quality stretch films are produced in Malaysia. Blown extrusion is similar to the simple extrusion, except for the fact that it produces verythin films. It involves extruding a tube of molten polymer through a die and expanding it multiple times to produce a thin film bubble. The bubble is then molded into different shapes. Numerous types of polymers can be used in this process. However, the majority of the stretch film manufacturers in Malaysia use polyethylene in film extrusion.

• Blown films have more balanced in mechanical properties than simple or extruded films because it passes through various machines and traverse directions. Stretch film manufacturers also make sure that the thin film produced is tensile, flexible, and robust.

• A large film, two smaller thin films, or other shapes of the film can be produced via blown filmextrusion.

• Excessive trimming is not needed after the film is manufactured, and a single die can be used to make different shapes and sizes of the film.

• Compared to the cast extrusion, the lower melting temperature is required in blown film extrusion. It reduced the cost of manufacturing

The aforementioned application shows how important film extrusion is to various industries, especially when it comes to the packaging, shipping, manufacturing, construction and agriculturalmachinery.