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Flat film Flat film is produced by cutting a tube along its ends during the extrusion process. It can be cut crosswise to produce rectangular pieces of film or sheets, and also lengthwise into varying widths, resulting in very long rolls of film.

High-density polyethylene is used in the packaging, electrical, automotive, and other industries.

High-density polyethylene has a wide range of applications; its physicochemical properties, ease of processing, and low cost make it the most widely used thermoplastic in our society.

Due to the change in its structure, the material exhibits improved resistance to deformation under dynamic loading, as well as improved impact strength at low temperatures and improved resistance to stress cracking in corrosive environments.

Cross-linked polyethylene has a modified linear structure, forming an intertwined three-dimensional network similar to that found in thermosetting plastics.

There are different types of additives that can be added to this polyethylene to improve some of its properties, but regardless of the additive used, its main qualities—abrasion resistance and impact resistance—cannot be improved.

The properties of ultra-high-molecular-weight polyethylene differ from those of the two types of polyethylene mentioned above, primarily because of its high molecular weight.

This plastic can be manufactured using the Ziegler, Phillips, or (gas-phase) method. This polymer differs from conventional high-density polyethylene in its average molecular weight, which ranges from 200,000 to 500,000 g/g-mol.

Polypropylene is one of the most versatile polymers known. It serves two fundamental purposes: one as a plastic and the other as a fiber. As a plastic, it is used to make food containers that are microwave-safe and dishwasher-safe.

High-density polyethylene can be manufactured using various methods. Before processing, additives are added; this process is called formulation.