Precision Testing of Shrink Force, Shrinkage Ratio and Contracting Force of Heat-Shrink Films

The Labthink C631H Thermal Shrinkage Tester is designed for the accurate measurement of shrinking force, contracting force, and shrinkage ratio of heat-shrinkable films. Developed in accordance with internationally recognised standards, the C631H helps manufacturers evaluate the thermal performance of shrink films used in packaging applications.

With a force detection capability greater than 0.01 N, the C631H provides highly sensitive and repeatable measurements, enabling quality control teams, researchers, and packaging engineers to assess shrink film behaviour under controlled thermal conditions.

The system is ideally suited for manufacturers of shrink films, flexible packaging materials, labels, sleeves, and other heat-shrinkable products where consistent shrink performance is critical to product quality and packaging appearance.

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Key Features

Accurate Shrink Force Measurement

Measures the shrinking force generated by heat-shrinkable films during thermal exposure.

Contracting Force Analysis

Evaluates contraction forces that influence package appearance, product protection, and material performance.

Shrinkage Ratio Determination

Assesses the dimensional shrinkage characteristics of films to verify material consistency and performance.

High Sensitivity

Capable of detecting shrinking forces greater than 0.01 N, enabling precise measurement of film behaviour.

Standards-Compliant Testing

Designed and developed in accordance with internationally recognised testing standards.

Quality Control and R&D Applications

Suitable for routine production testing, material development, quality assurance, and supplier qualification programs.

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Technical Specifications

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Reference Standards

The C631H is designed in accordance with:

These standards help ensure consistent, repeatable, and internationally recognised test results.

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Key Benefits for Quality Engineers

Verify Film Performance

Ensure heat-shrink films perform consistently during packaging operations and meet product specifications.

Improve Packaging Quality

Measure and control shrink characteristics that affect package appearance, fit, and protection.

Identify Material Variations

Detect differences in shrink force and shrinkage behaviour between production batches or suppliers.

Support Supplier Qualification

Verify incoming materials meet performance requirements before use in production.

Reduce Packaging Defects

Identify issues that may lead to:

• Poor package appearance
• Wrinkling
• Distortion
• Insufficient shrink performance
• Product damage during packaging

Reliable Quality Documentation

Generate objective test data to support:

• Quality management systems
• Customer requirements
• Product validation
• Supplier audits
• Continuous improvement programs

Improved Process Consistency

Monitor shrink-film performance to reduce variability in packaging operations.

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Industries and Applications

Flexible Packaging

Applications

• Shrink film testing
• Shrink wrap evaluation
• Packaging material development
• Production quality control

Benefits

• Consistent packaging appearance
• Improved product protection
• Reduced packaging defects

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Food and Beverage Packaging

Applications

• Bottle neck sleeves
• Shrink bands
• Multipack shrink wrapping
• Label performance verification

Benefits

• Better packaging consistency
• Improved shelf presentation
• Enhanced product security

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Pharmaceutical Packaging

Applications

• Tamper-evident shrink bands
• Security packaging validation
• Shrink sleeve testing

Benefits

• Regulatory compliance support
• Improved package integrity
• Consistent packaging performance

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Consumer Goods Packaging

Applications

• Full-body shrink sleeves
• Product packaging validation
• Label shrink performance testing

Benefits

• Improved brand presentation
• Reduced packaging failures
• Better customer experience

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Packaging Film Manufacturing

Applications

• Film development
• Production quality control
• Material comparison studies
• Research and development

Benefits

• Improved material consistency
• Faster product development
• Better process control

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Why Shrink Force Testing Matters

The performance of heat-shrink films directly impacts package appearance, product protection, and production efficiency.

The C631H enables manufacturers to:

✅ Measure shrink force accurately
✅ Determine shrinkage ratios
✅ Compare material performance
✅ Validate packaging materials
✅ Improve product consistency
✅ Reduce packaging defects
✅ Support compliance with industry standards

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Why Choose the Labthink C631H?

The Labthink C631H Thermal Shrinkage Tester provides a comprehensive and reliable solution for evaluating the thermal shrinkage properties of heat-shrinkable films. Its ability to accurately measure shrinking force, contracting force, and shrinkage ratio helps manufacturers maintain product quality, optimise packaging performance, and ensure material consistency.

Key Advantages

✅ Measures shrinking force, contracting force, and shrinkage ratio
✅ Detects forces greater than 0.01 N
✅ Standards-compliant testing
✅ Suitable for quality control and R&D applications
✅ Supports packaging material validation
✅ Helps reduce packaging defects and variability
✅ Ideal for flexible packaging, food, pharmaceutical, and consumer goods industries

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Why Choose S.I. Instruments?

S.I. Instruments supplies advanced testing and measurement solutions backed by technical expertise, calibration support, and application knowledge.

We help manufacturers, laboratories, and quality professionals across Australia, New Zealand, and Papua New Guinea achieve reliable, repeatable, and compliant testing results.

Our Services

• Product selection and application advice
• Installation and commissioning assistance
• Calibration services
• Operator training
• Technical support
• Preventive maintenance

Regional Coverage

Choose S.I. Instruments for precision you can trust, compliance you can rely on, and service that delivers confidence.

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Request a Quote

Looking for a reliable solution for testing heat-shrinkable films and packaging materials?

Contact S.I. Instruments today to discuss the Labthink C631H Thermal Shrinkage Tester and find the right solution for your application.