Polyolefins

Polyolefins are polymers that contain only carbon and hydrogen. They consist of long carbon chains – C-C-C – forming the basic skeleton of the polymer chains themselves. It can be said that polyolefins are polymeric hydrocarbons. Polyolefins are a very important industrial group of polymers with excellent performance characteristics.

Polyethylene is a dense, thermoplastic, transparent, and wax-like substance. Under the influence of sunlight and moisture, it loses its elasticity. It is an excellent material for creating shrink films.

Polyethylene films have low water vapor permeability, easily allow organic vapors to pass through, and are not resistant to hydrocarbons and their chlorinated derivatives. However, they are resistant to the action of bases, acid solutions, salts, and low temperatures. Polyolefin films can be produced from both pure granules and mixtures of various semi-products. Thanks to additives, specific properties of the films can be achieved.

• Polyethylene (PE) allows for sealing the film and increases its mechanical resistance.
• Polypropylene (PP) provides high stiffness, resistance to high temperatures, and excellent optical properties.
• Ethylene-vinyl acetate copolymer (EVA) strengthens the film, improves sealability, and shrinkability.
• Ethylene-vinyl alcohol (EVOH) improves the barrier properties against oxygen.
• Polyamide (PA) increases tear resistance and provides a barrier for gases.