Customized CPE cast film offers tailored thickness, clarity, and strength for versatile applications.

Introduction:
High-speed beverage production demands reliable collation shrinking to maintain pack integrity during Heat Tunnel processing. CPE Cast Film offers high mechanical strength and controlled shrink characteristics, making it an ideal choice for heavy-duty beverage packs. Failure to properly shrink can result in loose packs, uneven shrinkage, or tearing during lifting, leading to production delays and logistics risks. This film is engineered to provide consistent Heat Shrink performance, optimal Shrink Ratio, and reliable Holding Force from filling line to palletizing.

1. Engineered for Stable Heat Shrink Performance

Beverage packs in Heat Tunnel lines are exposed to concentrated thermal energy while bearing mechanical load from heavy bottles. Standard films often fail to maintain uniform contraction. CPE Cast Film provides controlled Heat Shrink, ensuring even contraction around collated units and minimizing deformation.

Key Parameters:

Thickness: 50–100 μm

Tensile Strength: MD ≥30 N/mm², TD ≥20 N/mm²

Heat Shrinkage: MD ≤1.0%, TD ≤1.0%

This combination maintains pack integrity and dimensional stability throughout tunnel processing and cooling.

2. Optimized Shrink Ratio for Uniform Collation

Uneven Shrink Ratio leads to distorted packs and unstable stacks. CPE Cast Film is formulated with precise molecular orientation to synchronize shrinkage across the entire pack surface, reducing Bullseye formation at sleeve openings and supporting consistent pack geometry.

Key Parameters:

MD Shrink Ratio: ≤1.0%

TD Shrink Ratio: ≤1.0%

Elongation at Break: MD ≥350%, TD ≥450%

This ensures tight, uniform collation suitable for automated conveying, lifting, and palletizing operations.

3. High Holding Force for Heavy Beverage Loads

After exiting the Heat Tunnel, beverage packs must retain sufficient Holding Force to withstand lifting, conveying, and palletizing. CPE Cast Film maintains residual tension after cooling, keeping bottles securely collated even under dynamic load conditions.

Key Parameters:

Static/Dynamic COF: ≤0.8

Sealing Strength (125°C): ≥8 N/15mm

This prevents loose packs and tearing during post-tunnel handling.

4. Mechanical Strength Against Lift-Induced Failure

Heavy beverage packs are prone to tearing when lifted immediately after shrinking. CPE Cast Film’s high tensile and puncture resistance provides robustness against edge stress, ensuring reliable protection throughout transport and handling.

Key Parameters:

Puncture Resistance: high (inherent from tensile/elongation properties)

This mechanical performance minimizes pack failure during lift-and-carry operations.

5. Practical Specifications for High-Speed Beverage Lines

CPE Cast Film is compatible with standard Heat Tunnel temperatures and high-speed lines. Controlled COF and uniform thickness ensure smooth feed through automated systems, reducing jams and maintaining production efficiency.

Conclusion:
For heavy-duty beverage collation, selecting CPE Cast Film with stable Heat Shrink behavior, balanced Shrink Ratio, high Holding Force, and proven mechanical strength is essential. It ensures uniform pack contraction, prevents tearing, and supports stable operations from Heat Tunnel exit to palletizing, maintaining product integrity and production efficiency. To achieve optimal packaging performance, we invite you to contact the Ruida technical team to obtain test samples designed for automated packaging systems and experience a more reliable and efficient packaging solution.