MDO PE Film

MDOPE film refers to Machine Direction Oriented Polyethylene film. It is a type of plastic film made through a special processing technique characterized by stretching in the machine direction, which is the direction of film production. This stretching process alters the arrangement of the polyethylene molecular chains, thereby enhancing the film’s physical and chemical properties.

The primary characteristics of MDOPE film include improved barrier properties, enhanced mechanical strength, better transparency and gloss, and customizable features. One of the most significant aspects of MDOPE film is its ability to be compounded into a single PE (Polyethylene) material. The advantage of this material lies in its direct recyclability into PE granules. This means that post-use MDOPE film can more easily enter the recycling process, transforming into new polyethylene products. Recyclability is particularly important for environmental protection and sustainable development, as it helps reduce waste and promotes a circular economy.

The manufacturing process of MDOPE film involves heating a polymer film to a temperature slightly below its melting point and then stretching it in a specific direction. This film can be cast on an MDO machine or introduced as a step at the final stage of blown film manufacturing.

The barrier performance of MDOPE (Machine Direction Oriented Polyethylene) film is generally considered good, especially in terms of its moisture barrier properties. MDOPE films are created by stretching polyethylene film in the machine direction, which aligns the polymer chains and improves strength and barrier properties.

Critical aspects of MDOPE film’s barrier performance include:

Moisture Barrier: MDOPE films typically offer excellent resistance to water vapor transmission. This makes them suitable for packaging applications where a moisture barrier, such as food packaging, is crucial to maintain freshness and prevent spoilage.

Gas Barrier: While MDOPE films provide a decent barrier against gases like oxygen and carbon dioxide, they are less effective than other materials like EVOH (Ethylene Vinyl Alcohol) or PVDC (Polyvinylidene Chloride). MDOPE films are often combined with other materials in multilayer structures for applications requiring high gas barrier properties.

Chemical Resistance: MDOPE films generally have good resistance to oils, fats, and some solvents, which is beneficial for packaging applications involving these substances.

Mechanical Properties: The orientation process enhances the film’s mechanical strength, making it more resistant to punctures and tears. This is advantageous in packaging applications where durability is important.

It’s important to note that the exact barrier properties of MDOPE film can vary depending on the manufacturing process, the degree of orientation, and the presence of any additives or co-polymers