What Is Extrusion Lamination

Inside an extrusion coating and laminating line the substrates and melt are nipped at a bonding station.

What is extrusion lamination.

The difference between extrusion coating and extrusion lamination is the presence of the second or auxiliary web that sandwiches the melt on the second side. Another lamination process uses a lamination press after materials are combined in a thicker structure than film. The lamination of parts components and materials can make that specific product stronger more. Extrusion coating is one of the processes used to produce a large range of thin multilayer structures.

In extrusion lamination the molten polymer is. These processes although significantly different can produce materials that look very similar to the untrained eye. The purpose of this. In the extrusion coating of polyethylene a molten web of extruded polymer is applied as a thin coating onto a substrate which is passing continuously through a nip roll assembly see figure 2.

For extrusion coating only one substrate is used and the extrudate coats the surface and is quenched on a chill roll much like a cast film process. Extrusion lamination brings two films together using a layer of molten resin extruded through computer controlled extruder dies with advanced gauge controls nuclear gauge monitoring and automatic profile control. The two films and the molten resin form a multilayer flexible packaging lamination. There are numerous advantages of using the extrusion coating process including less expensive raw materials and improved structural.

Extrusion laminating is a similar process except that the extruded hot molten resin acts as the bonding medium to a second web of material. Extrusion and lamination coating. Offering multiple extrusion coating laminating lines with varying width capabilities proampac produces a variety of products and substrates for flexible packaging applications. Lamination and extrusion are common manufacturing processes used to create a variety of building products including bathroom partitions and lockers.

As an example azdel a glass reinforced thermoplastic composite made with continuous glass mat is produced using an extrusion lamination operation film continuous random orientation glass mat and molten resin are combined in a lamination process using a sandvik double belted. The extrusion lamination. This consists of a large roll a pressure roll and a counter pressure roll cooled by water.