Application of Polyethylene Wax in Thin Films

Application of Polyethylene Wax in Thin Films

The application of polyethylene wax in thin films is widespread. Polyethylene wax, known for its excellent cold resistance, heat resistance, chemical resistance, and wear resistance, enhances the processing performance, durability, and aesthetics of thin films. It is often used as a lubricant to improve production efficiency and prevent adhesion in thin film manufacturing. Additionally, polyethylene wax contributes to increased gloss and processing performance of the final products. As a result, polyethylene wax finds extensive use in the production of various films, including low-density polyethylene films and biaxially oriented polypropylene films.

Mechanism of Polyethylene Wax in Thin Films:

During the thin film production process, polyethylene wax is introduced as an auxiliary agent in the polymer melt. At high temperatures, polyethylene wax and the polymer melt mix and disperse uniformly, influencing the arrangement and crystallization of polymer chains, thereby impacting the film's structure and forming a new stable system. This process enhances the processing performance of the thin film, making it softer, brighter, and more resistant to cold and heat. Furthermore, polyethylene wax improves the tensile strength, tear resistance, and impact resistance of the film.

Primary Functions of Polyethylene Wax in Thin Films:

Enhancing Wear Resistance and Scratch Resistance:

The addition of polyethylene wax increases the film's hardness, improving wear resistance and scratch resistance, thereby extending the film's lifespan.

Improving Transparency of Thin Films:
The tiny particles of polyethylene wax fill surface irregularities, reducing light scattering and reflection, thereby enhancing the transparency of thin films.

Increasing Cold and Heat Resistance:
Polyethylene wax's excellent cold and heat resistance increases the film's ability to withstand extreme temperatures, extending its lifespan.

Improving Chemical Resistance and Wear Resistance:
With excellent chemical resistance and wear resistance, polyethylene wax enhances the film's ability to resist chemicals and wear, expanding its applications into broader fields.

Preventing Moisture, Oxygen, and Harmful Substance Ingress: 
Polyethylene wax forms a protective film on the surface of the thin film, preventing the ingress of moisture, oxygen, and other harmful substances, thereby extending the shelf life of items.

Enhancing Adhesion and Stability of Thin Films: 
Polyethylene wax can form chemical bonds through chemical reactions, particularly with certain materials like metals, enhancing the adhesion and stability of the thin film.

Acting as a Lubricant: 
In the film production process, polyethylene wax serves as a lubricant, improving processing efficiency, preventing and overcoming film adhesion, enhancing the smoothness and glossiness of the final products, and improving their appearance.

Improving Forming Performance of Thin Films: 
The addition of polyethylene wax helps improve the forming performance of thin films, making them easier to process and shape, which is crucial for complex-shaped thin film products.

Reducing Surface Tension: 
Polyethylene wax can lower the surface tension of the film, improving its surface-wetting properties, making it easier to coat or print, and enhancing print quality.

Minimizing Static Electricity Accumulation:
The addition of polyethylene wax can reduce static electricity accumulation on the film's surface, decreasing the ability to attract dust and other particles and maintaining the cleanliness of the film surface.

Enhancing Sealing Performance: 
In applications like food packaging, the use of polyethylene wax can improve the sealing performance of the film, ensuring the packaging's tightness and freshness.

Environmentally Friendly: 
Compared to some traditional additives, polyethylene wax typically exhibits better environmental friendliness, providing certain advantages for thin film products that comply with environmental requirements.

In conclusion, the roles of polyethylene wax in thin films primarily involve improving wear resistance, transparency, and antioxidant properties, thereby protecting items from environmental damage.