Cross-Linked Shrink Film

Cross-linked shrink film is a high-end packaging material with superior performance compared to ordinary shrink film. Through electron beam cross-linking modification of the polyethylene molecular structure, a stable three-dimensional network system is formed, significantly improving film strength, puncture resistance, and resistance to high and low temperatures. It is suitable for packaging heavy, sharp, irregularly shaped goods, and items requiring high levels of protection.

This product uses an additive-free electron beam physical cross-linking process, leaving no chemical residues and ensuring safety and environmental friendliness. It is the preferred solution for high-end packaging in various industries.

1. Exceptional Puncture & Tear Resistance

The cross-linked structure gives the film physical strength far beyond standard shrink film

• Puncture resistance:2–3x higher than standard LDPE shrink film – effectively resists punctures from sharp edges
• Tear resistance:Even if locally damaged, tears do not propagate easily
• Tensile strength:Withstands higher packaging tension – suitable for heavy-duty product packaging
• Applicable products:Hardware tools, machine parts, building materials pipes and tubes, industrial parts with edges and corners

2. Wide Temperature Range – Stable in Hot and Cold Environment

It maintains excellent performance under extreme temperatures:

• Cold resistance: Remains flexible at -30°C – no brittleness, no cracking – suitable for frozen storage and cold chain transport
• Heat resistance: Dimensionally stable at 90°C – no softening or deformation – suitable for high-temperature storage environments
• Shrink temperature: Shrinks across a range of 110°C–140°C – adapts to different types of shrink equipment.

3. High Shrink Ratio – Tight Fit Around Irregular Shape

The cross-linked structure gives the film a higher shrink ratio and stronger shrink force:

• Shrink ratio: MD up to 80%–85% – TD up to 80%–85%.
• Irregular shape conformity: Tightly conforms to complex product contours such as tool handles, pipe fittings, and irregular parts
• Memory effect: Maintains shape stability after heat shrinking – no rebound or loosening after cooling.

4. Multiple Forms & Specification

The cross linking process does not affect film transparency

• Transparency ≥85%: Packaged products remain clearly visible
• High gloss: High surface gloss after shrinking – enhances product appearance
• No yellowing: Excellent chemical stability after cross linking – does not yellow during long-term storage

5. Multiple Forms & Specification

We offer various forms depending on your packaging method:

• Rolls: Suitable for automatic packaging equipment – ideal for high-volume continuous production
• Pre-made bags: Suitable for manual packaging or small-batch production
• Sheets: Suitable for manually wrapping irregularly shaped products

6. Environmental & Safety

• No chemical residues: Electron beam cross linking process – no chemical cross linking agents added
• 100% recyclable: Meets circular economy requirements
• Custom printing available: Gravure printing services available for brand presentation when required,

1.Hardware Tools

• Product types: Wrenches, pliers, hammers, power drills, saw blades, screwdrivers
• Packaging challenge: Sharp tool edges – standard film easily punctured
• Cross-linked film advantage: High puncture resistance – effectively protects tools – prevents package breakage

2.Machine Parts & Auto Components

• Product types: Bearings, gears, brake pads, filters, pulleys
• Packaging challenge: Irregular shapes with edges and corners – standard film does not conform tightly
• Cross-linked film advantage: High shrink ratio – tight fit around irregular contours – secure wrapping

3.Building Materials & Pipe Products

• Product types: Metal pipe fittings, valves, connectors, profiles, sheets
• Packaging challenge: Heavy products – prone to abrasion and breakage during transport
• Cross-linked film advantage: High tear resistance – withstands heavy product packaging – reduces transport damage

4.Cold Chain & Frozen Products

• Product types: Frozen seafood, frozen meat, ice cream, quick-frozen foods
• Packaging challenge: Standard film becomes brittle and cracks at low temperatures
• Cross-linked film advantage: Remains flexible at -30°C – no brittleness at low temperatures

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Why Cross-Linked Film Outperforms Standard LDPE Shrink Film

 

Performance Indicator	Standard LDPE Shrink Film	Our Product
Puncture Resistance	Baseline	2–3x higher
Tear Resistance	Baseline	Significantly improved
Shrink Ratio	50%–55%	80%–85%
Minimum Service Temperature	-20°C	-30°C
Maximum Service Temperature	80°C	110°C
Shrink Temperature	140°C–180°C	110°C–140°C
Irregular Shape Conformability	Moderate	Excellent
Memory Effect	None	Yes
Price	Baseline	Higher – cost-effective value

 

 

What to Consider When Choosing Cross-Linked Shrink Film?

 

Consideration	Specific Question	Our Response
Cross Linking Method	Which cross linking process is used? Electron beam or chemical?	Electron beam cross linking – stable performance – no chemical residues
Strength Performance	What is the puncture resistance? How much stronger than standard film?	2–3x higher puncture resistance – suitable for products with sharp edges
Temperature Range	Maximum temperature resistance? Does it become brittle at low temperatures?	Service temperature range -50°C to 120°C – excellent cold and heat resistance
Shrink Performance	What is the shrink ratio? Does it conform tightly to irregular shapes?	Shrink ratio up to 70%–80% – tight fit around complex contours
Transparency	Does cross linking affect transparency?	Transparency ≥85% – maintains good presentation
Suitable Applications	Which products require cross-linked shrink film?	Heavy-duty items, sharp-edged products, irregular shapes, industrial goods requiring long-distance transport

 

 

How to Determine Whether Your Product Requires Cross-Linked Shrink Film?

 

Product Characteristic	Standard Shrink Film	Cross-Linked Film
Lightweight, smooth surface	✓ Suitable	Optional
Sharp edges or corners	Prone to breakage	✓ Recommended
Irregular shape	Moderate conformity	✓ Excellent conformity
Requires long-distance transport or multiple handling	Higher risk	✓ Recommended
Requires storage at low temperatures (below -20°C)	Prone to brittleness	✓ Recommended
Requires storage at high temperatures (above 80°C)	Prone to deformation	✓ Recommended
Seeking higher packaging strength and reliability	Moderate	✓ Recommended

 

 

Request Samples & Get a Quote

 

We offer two sample options to help you verify cross-linked film performance before purchasing:

Free existing samples

In-stock cross-linked film samples for testing puncture resistance, shrink performance, and conformability (freight collect).

Custom samples

Sample rolls or bags made to your product dimensions and shape – proceed to mass production after approval.

 

When sending your inquiry, please provide the following information so we can recommend the right solution and provide an accurate quote:

 

Item	Details
Product type	Hardware tools / machine parts / building materials / industrial goods / other?
Product characteristics	Sharp edges? irregular shape? weight?
Packaging method	Manual / semi-automatic / fully automatic?
Environmental requirements	Low temperature resistance? high temperature resistance?
Estimated monthly usage	What is the total quantity of products that need to be packaged?

 

 

Customization Process

 

Size

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Proofing

2

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Drawing

3

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Customized Services

4

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Production and delivery

5

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After-sale Services

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FAQ

Q: What is the difference between cross-linked shrink film and standard LDPE shrink film?

A: It uses electron beam irradiation to modify the molecular structure of polyethylene at the molecular level, creating a three-dimensional network. This change delivers three core differences: puncture resistance is 2–3x higher – suitable for packaging products with sharp edges; service temperature range expands to -30°C to 90°C – excellent cold and heat resistance; shrink ratio is higher (80%–85%) – conforms tightly to irregular product contours. Standard LDPE shrink film is suitable for conventional product packaging, while film is designed specifically for demanding packaging requirements.

Q: What is electron beam cross linking? How does it differ from chemical cross linking?

A: Electron beam cross linking uses high-energy electron beams to irradiate the film, creating cross links between polyethylene molecular chains without adding any chemical cross linking agents – no chemical residues – safe and environmentally friendly. Chemical cross linking requires adding cross linking agents to the raw material, creating the cross-linked structure through a chemical reaction. Electron beam cross linking offers more uniform and controllable cross linking density, with higher product purity – suitable for applications with strict requirements regarding chemical residues.

Q: Can cross-linked shrink film be used for food packaging?

A: Yes. Our electron beam cross linking process does not add chemical cross linking agents – no chemical residues from the cross linking process. It is produced using food-grade polyethylene raw materials and complies with FDA food contact material standards – suitable for direct contact with frozen meat, seafood, baked goods, and more. The excellent cold resistance of cross-linked film makes it particularly suitable for frozen food packaging – it remains flexible at -30°C without brittleness or cracking.

Q: The shrink temperature of cross-linked shrink film is higher than standard film. Do I need to adjust my equipment?

A: Yes. The recommended shrink temperature for cross-linked film is 110°C–140°C – slightly higher than standard LDPE film. Most hot-air circulation shrink tunnels and infrared shrink equipment can adapt by adjusting the temperature setting. If your existing equipment has insufficient maximum temperature, we can also provide a low-temperature formulation cross-linked film that achieves good shrink performance at slightly lower temperatures. We can provide temperature parameter recommendations based on your equipment.

Q: It has a higher cost. How is its cost-effectiveness demonstrated?

A: It has a higher unit price than standard film, but the comprehensive benefits are significant: puncture resistance is 2–3x higher – substantially reduces product damage and rework costs caused by package breakage; high shrink ratio ensures tight packaging for irregular products – reduces secondary packaging needs; wide temperature range of -30°C to 90°C reduces the need for film changes due to temperature variations; exceptional physical properties allow you to achieve the same protection with thinner film compared to standard thick film. When calculating total packaging waste, transport damage, and labor costs, It often delivers a superior total cost of ownership.

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