Extrusion coating is the coating of a molten web of synthetic resin onto a substrate material. It is a versatile coating technique used for the economic application of various plastics , notably polyethylene , onto paperboard , corrugated fiberboard , paper , aluminium foils , cellulose , non-wovens , or plastic films .

Extrusion coating is the process of applying a thin bonded film of a plastic to a continuous substrate (web) such as paper, board, foil, fabric, as well as a plastic.

Three basic molecular properties affect most of the properties essential to high quality extrusion coatings. These molecular properties are: These molecular properties are determined by the materials used to produce polyolefins and the conditions under which resins are manufactured.

Extrusion coating is one of the processes used to produce a large range of thin multilayer structures. 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 …

EXTRUSION COATING Procedure: The extrusion-coating process is illustrated in Figure 5. TPU pellets are compacted and fluxed in the extruder barrel (not shown but perpendicular to the place of the paper). The molten material is forced through a slit due downward between two rolls. The substrate is fed into the system between the molten plastic ...

function of the basic resin properties and extrusion coating conditions. With a given resin neck-in can be reduced by decreasing the air gap, increasing the coating line speed, or decreasing the melt temperature.

In the extrusion coating process an extruder forces melted thermoplastic resin through a horizontal slot-die onto a moving web of substrate. The resulting product is a permanently coated web structure. Extrusion lamination is a similar process to extrusion coating, where the resin is extruded between two substrates and acts as a bonding agent.

Extrusion is a game-changing manufacturing process that has revolutionized multiple industries. From packaging to automotive, aerospace to medical, this versatile technique has found its way into countless applications.