Crosslinked Shrink Film: Reshaping the Application Standard of Heat Shrink Packaging

Crosslinked shrink film uses a special irradiation technology. This technology changes the molecular structure inside the film material through specific energy irradiation to form a stable cross-linked network. Unlike traditional chemical cross-linking or physical stretching processes, the irradiation cross-linking process does not require the addition of additional chemical additives to avoid the possible impact of residues on the packaging contents, and the physical properties of the film will not be changed due to the volatilization of additives. ​This molecular-level transformation allows the film material to maintain its original flexibility while significantly improving the overall structural stability. The cross-linked molecular chains are intertwined and connected to form a mesh-like structure, so that the stress of the film can be more evenly dispersed when subjected to external forces.

Excellent shrinkage meets diversified packaging needs
Shrinkage is one of the core properties of heat shrink film, and crosslinked shrink film shows outstanding advantages in this regard. Thanks to its unique molecular structure, during the heating process, the film material can shrink evenly in the preset direction and proportion, and fit closely to the surface of the packaged item. This shrinkage is not only fast, but also has a stable shrinkage rate, which can adapt to product packaging of different shapes and sizes. ​Whether it is a regular box-shaped item or an irregular shaped item, crosslinked shrink film can shrink accurately to form a tight package and effectively reduce the gap inside the package. This tightness can not only improve the aesthetics of the package, but more importantly, it can fix the product position to prevent damage caused by shaking during transportation and storage. The uniform shrinkage characteristics avoid the rupture caused by local over-shrinkage or wrinkles caused by insufficient shrinkage that may occur in traditional shrink films, ensuring the integrity and consistency of the package. ​

Firm and durable sealing ensures packaging safety ​
The sealing of the package is directly related to the storage quality and safety of the product. Crosslinked shrink film shows the characteristics of firmness and durability in terms of sealing. After irradiation cross-linking treatment, the intermolecular bonding force of the film material is enhanced. During the heat sealing process, the heat-sealed part of the film can form a stable and high-strength sealing layer, which effectively blocks the outside air, moisture and dust. ​This sealing performance has long-term stability, and the seal is not easy to crack or loosen even in a large temperature change or humid environment. For products that need to be stored for a long time or transported over long distances, this strong sealing can significantly extend the shelf life of the product and reduce product deterioration or damage caused by external environmental influences. Good sealing can also prevent the leakage of volatile substances inside the package, and is suitable for fields with high requirements for packaging sealing. ​

Wide sealing temperature range improves application flexibility​
Another major advantage of crosslinked shrink film is that it has a wide sealing temperature range. Traditional heat shrink film is often sensitive to heat sealing temperature. Too high temperature may cause film aging or damage, and too low temperature cannot form an effective seal. Due to the stability of its molecular structure, crosslinked shrink film can maintain good heat sealing performance in a wide temperature range. ​This feature enables crosslinked shrink film to adapt to different types of packaging equipment and process conditions. Whether it is the lower temperature operation of manual packaging equipment or the high temperature and rapid heat sealing of automated production lines, it can stably complete the sealing process without frequent adjustment of equipment parameters. This flexibility reduces the difficulty of operation in the packaging production process and improves production efficiency. It also expands the application scenarios of crosslinked shrink film, enabling it to meet the packaging needs of different industries and different production scales.​

Multiple performances adapt to all-scenario packaging systems​
The various excellent properties of crosslinked shrink film make it suitable for all packaging systems. From food, medicine to electronics, building materials and other fields, different products have different requirements for packaging, and crosslinked shrink film can meet them with its comprehensive performance. ​In food packaging, its non-toxicity and good sealing can ensure the freshness and safety of food; in the field of pharmaceutical packaging, its stable chemical properties and barrier properties can meet the strict standards for drug storage; for electronic component packaging, its antistatic properties and tight wrapping can effectively protect components from external interference and physical damage. This wide range of applicability is not a simple superposition of functions, but the result of the synergistic effect of various properties, which enables crosslinked shrink film to achieve ideal packaging effects in different packaging systems. ​​