Cross-linked Shrink Film Production Process

The manufacturing process of cross-linked shrink film mainly includes the following steps:

1. Raw Material Preparation

   • First, prepare the raw materials for the five film layers.
   • Mix the raw materials evenly for each layer and feed them into a five-layer circular extrusion machine.
   • The layers are extruded and stacked together to form the first film bubble.

2. Forming Process

   • The first film bubble undergoes secondary water-cooling to form the first film body.
   • The first film body is then subjected to a three-stage heating process.
   • After heating, air is injected to expand it into the second film bubble.
   • The second film bubble is cooled using circulating cold air, resulting in the second film body.

3. Cross-linking Treatment

   • The second film body is perforated using a dotted perforation device.
   • Finally, it undergoes cross-linking treatment using an electron beam as the irradiation source.

Advantages of Cross-linked Shrink Film

1. High Transparency and Gloss

   • The film offers excellent transparency and gloss, allowing clear visibility of the packaged contents.
   • Enhances the aesthetic appeal of the product.

2. Superior Mechanical Properties

   • The cross-linking process improves tensile strength, tear resistance, and puncture resistance.
   • Provides better protection, reducing the risk of damage during transportation and storage.

3. Excellent Heat Sealing Performance

   • Features a wide heat sealing temperature range, ensuring firm and secure seals.
   • Reduces the risk of seal breakage, making it suitable for high-speed packaging lines.

4. Eco-friendly and Recyclable

   • The film is non-toxic, odorless, and complies with food packaging safety standards.
   • It is recyclable, contributing to environmental sustainability.

5. High and Uniform Shrinkage

   • Offers high shrinkage rates with even shrinkage performance.
   • Can tightly wrap products of various shapes, enhancing packaging appearance and protection.

6. Temperature and Chemical Resistance

   • Maintains stability in both high and low-temperature environments.
   • Resistant to chemical corrosion, making it suitable for diverse packaging applications.

7. Lightweight and Cost-effective

   • Low-density material reduces film consumption per unit area.
   • Lowers packaging costs and transportation expenses.

Cross-linked shrink film is widely used due to its outstanding performance, making it an ideal choice for high-end packaging applications. Let me know if you need more details or recommendations!