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Seal Strength Test
About Us
Reliable Seal Strength Testing
Seal strength testing equipment accurately measures the force required to break the seal of various packaging materials, ensuring your products remain intact during transportation and storage. Whether it’s food, medical products, or other goods, a strong seal is essential for preventing contamination, maintaining freshness, and ensuring safety.
Factors such as the material’s melting point, thermal stability, flowability, and thickness can all affect its heat sealing performance. The heat sealing parameters vary significantly between different materials. The HST-01 Heat Sealer is designed to determine the optimal heat sealing parameters for materials such as plastic films, flexible composite films, and coated papers, including sealing time, sealing pressure, and sealing temperature.
HST-01 Hot Seal Tester
Product Features
- The upper and lower sealing jaws are made of metal surfaces, ensuring realistic heat sealing parameters.
- Digital PID temperature control technology enables fast and stable temperature regulation.
- Automatic pressure control ensures consistent sealing pressure.
- Automatic leveling ensures uniform sealing.
- Wide control range for temperature, pressure, and time, suitable for various testing needs.
- Manual/pedal switches and anti-burn design ensure safe operation.
- Professional software supports remote operation, data storage, and printing.
Efficient, Safe, and User-Friendly Design
- Tests up to 5 samples simultaneously for efficient, accurate results.
- Independent control of upper and lower sealing temperatures for flexibility.
- Easy-to-replace detachable sealing jaws.
- Manual and foot pedal switches with anti-burn design for safety.
standard
ASTM F2029、QB/T 2358、YBB 00122003
Applications
| Film Type | Materials | Applications | Heat Sealing Requirements |
| Smooth Surface Films | Plastic films, plastic composite films, paper-plastic composite films, coextruded films, aluminized films, aluminum foils, aluminum foil composite films, etc. | Food packaging, pharmaceutical packaging, electronic product packaging, etc. | Sealing surface must be smooth, width customizable to ensure sealing integrity. |
| Decorative Pattern Surface Films | Plastic films, plastic composite films, paper-plastic composite films, coextruded films, aluminized films, aluminum foils, aluminum foil composite films, etc. | Cosmetic packaging, luxury product packaging, pharmaceutical packaging, high-end product packaging, etc. | Sealing surface can be designed to balance aesthetics and sealing performance. |
Technical Specifications
| Specifications | HST-01 Heat Seal Tester |
| Sealing Temp. | Ambient~300℃ |
| Deviation | ±0.2℃ |
| Sealing Time | 0.1S~9999S |
| Sealing Pressure | 0.15~0.7 MPa |
| Seal Jaws | 330*10 mm L*W |
| Gas Pressure | 0.7 MPa |
| Port Size | Ф6 mm PU Hose |
| Power | AC 220V 50Hz |
| Customers need to prepare gas supply. | |
The sample is held between the two ends of the fixture, and tested through relative motion. By utilizing the force sensor on the fixture and the displacement sensor built into the testing machine, force and displacement data are collected in real-time, allowing the calculation of key performance indicators such as tensile strength, tear resistance, and deformation rate.
TST-01 Tensile Tester
Technologies
- 7 inch TFT touch screen operation
- PLC control
- Precision ball lead screw
- Test speed adjustable.
- Multiple fixtures available
- Limiting device and automatic returning function
- Multiple test items available.
- Microprinter(optional)
Standard
ISO 37、ASTM E4、ASTM D882、ASTM D1938、ASTM D3330、ASTM F88、ASTM F904
Applications
The tensile testing machine offers extensive applications, with more than 100 sample fixtures to accommodate the testing needs of over 1,000 materials. Labthink also provides customized solutions to address the specific testing requirements of different materials.
| Test Type | Description |
| Tensile Strength & Deformation | Measures the material’s tensile strength and deformation. |
| Breaking Force | Determines the force required to break the material. |
| Heat Sealing Strength | Assesses the strength of heat seals in packaging films. |
| Tear Resistance | Measures how well the material resists tearing. |
| Shear Strength | Evaluates the shear resistance of the material. |
| 180° Peeling | Tests the peeling force at a 180° angle. |
| 90° Peeling | Tests the peeling force at a 90° angle. |
The LT-03 Leak and Seal Strength Tester is engineered for testing the leakage resistance of packaging used for food, pharmaceuticals, medical devices, household chemicals, automotive parts, electronics, stationery, and other industrial products. Additionally, it evaluates the seal integrity of specimens after impact and compression tests.
LT-03 Leak Tester
Product Features
Feature | Description |
| PLC-Controlled Operation | PLC-controlled for stable, repeatable results. HMI touch screen for intuitive control. |
| Efficient Vacuum System | Venturi tube generates a vacuum up to -90 KPa, effectively detecting small leaks without extra equipment. |
| Visual Leak Detection | Leaks are identified through visible bubbles in a water-filled chamber, with cumulative results for easy assessment. |
| Parameter Saving Function | Saves up to 5 test setups for quick switching between different materials and conditions. |
| Customizable Chamber & Features | Clear acrylic chamber, custom sizes, and optional features like a micro printer, language adaptation, and integrated vacuum pump. |
Standard
ASTM D3078, GB/T 15171
Applications
| Product Type | Description |
| Glass Bottles, Pipes, Cans, and Boxes | Used for testing the seal strength of various glass containers, including bottles, pipes, cans, and boxes, ensuring product integrity during transport and storage. |
| Plastic Bottles, Pipes, Cans, and Boxes | Tests the seal quality of plastic packaging, including bottles, pipes, cans, and boxes, to prevent leakage or contamination. |
| Metal Bottles, Pipes, Cans, and Boxes | Ideal for evaluating the seal strength of metal containers, including bottles, pipes, cans, and boxes, ensuring protection against external factors. |
| Paper-Plastic Composite Bags and Boxes | Used to test the sealing performance of paper-plastic composite packaging, commonly found in food, beverage, and pharmaceutical industries. |
| Pen Refills | Tests the seal strength of pen refills, ensuring that ink does not leak and the refill remains intact during use and storage. |
| Electronic Components | Tests the sealing of electronic components packaging to prevent moisture or dust from affecting sensitive parts during transport and storage. |
| Medical Instruments | Ensures the integrity of packaging for medical instruments, vital for maintaining sterilization and protection during shipping and handling. |
Technical Specifications
| Test Range | 0~-90 KPa |
| Chamber | Acrylic Cylinder Shape |
| Test Space | Φ270*H210mm (Inside Usable) |
| Compressed Air | 0.7MPa (Prepared by user) |
| Power | 110~220V 50/60Hz |
Seal strength test evaluates the mechanical durability of seals to ensure they remain intact, maintaining packaging integrity throughout the entire product lifecycle.
LSST-01 Burst Tester
Principle
Burst Testing involves inflating a package until it ruptures, while measuring the pressure and volume at the point of failure. This method is essential for assessing the burst strength of packaging materials, ensuring they can endure internal pressures encountered during handling and storage.
Standard
ISO 11607-1、ISO 11607-2、ASTM F1140、ASTM F2054
Applications
Product Type | Description |
| Plastic Composite Bags | Tests the compressive strength of various packaging bags made from plastic films, aluminum films, paper-plastic composites, aluminum-plastic composites, and more. |
| Flexible Tubes | Includes a variety of tubes used in daily chemical and other industries, such as toothpaste tubes, cream tubes, cosmetic tubes, pharmaceutical tubes, and food tubes. |
| Creep Testing | Applicable to various packaging bags and boxes to evaluate their long-term deformation under constant load. |
| Creep-to-Failure Testing | Tests various packaging bags and boxes until failure to assess durability under prolonged stress. |
Technical Specification
Specification | Description |
| PLC-Controlled Unit | Ensures industrial-level stability and precise control. |
| User-Friendly HMI Touch Screen | Simplifies operation and reduces training time. |
| Automatic Test Result Statistics and Storage | Facilitates efficient data management and analysis. |
| Compatibility with Various Fixtures | Supports testing of multiple package types including three-side-seal packages, closed packages, doy packs, tubes, sealed trays, and cups. |
| Three Test Modes | Burst, creep, and creep to failure modes to meet diverse testing needs. |
| Personalized Sensitivity and Threshold Settings | Allows customization for specific testing requirements. |
| Pressure Range Up to 600 KPa | Adjustable to accommodate unique testing specifications. |
| Customizable Programming | Provides flexibility to tailor testing protocols. |
standard test method for seal strength of flexible barrier materials
Seal Strength Test importance
seal integrity testing by dye intrusion method
Benefits of testing
3. Verifying Compliance with Quality Standards
- Meets International Standards: Seal strength test is a key requirement in standards such as ASTM F88 and ISO 11607.
- Provides Basis for Certification: Supports FDA, CE, and other certifications for medical devices, food, and pharmaceuticals.
- Supports Customer Acceptance and Audits: Quality data serves as an important reference for supplier-customer acceptance and audits.
- Core Quality Control Indicator: Alongside thickness, peel strength, and permeability tests, it is a crucial part of packaging quality evaluation.
4. Enhancing Brand Image and Market Competitiveness
- Improves Customer Satisfaction: Strong seals provide a better unboxing experience, increasing consumer trust.
- Reduces Recall Risks: Prevents complaints, returns, or large-scale recalls caused by packaging failures.
- Strengthens Product Differentiation: High-quality packaging helps products stand out in highly competitive markets.
- Demonstrates Commitment to Quality: Using scientific testing shows the professionalism and rigor of the company’s quality management system.
1. Ensuring Product Packaging Safety
- Prevents Leakage: Ensures that packaging does not leak contents during transportation and storage due to insufficient seal strength.
- Extends Shelf Life: Proper sealing helps prevent moisture and oxidation, thereby prolonging the product’s shelf life, especially for food and pharmaceutical packaging.
- Protects Product Quality: Effective sealing prevents microorganisms, dust, and other contaminants from entering, maintaining the original quality of the contents.
- Prevents Cracking or Tearing: Avoids physical damage caused by weak seals during handling.
2. Guiding Production Process Optimization
- Validates Sealing Parameters: Test results verify whether heat sealing temperature, pressure, and time are set properly.
- Optimizes Sealing Process: Use test data to adjust equipment settings, improving the consistency and stability of heat seals.
- Reduces Production Waste: Early detection of sealing defects decreases the number of defective products and increases production efficiency.
- Enhances Automation Control: Test data can provide feedback for online quality control and adaptive process adjustments.
packaging seal strength testing
Cell Instruments Advantages
01
Professional manufacturer background
With many years of R&D and production experience, we focus on packaging, medicine, food, and electronics. We have a strong R&D team and modern manufacturing system to ensure leading product quality and technical level.
02
Strong custom development capabilities
With deep technical accumulation, we provide tailor-made solutions, including function adjustment, software customization, and automation transformation, to flexibly respond to various testing needs and improve testing efficiency.
03
Complete after-sales service system
With a technical support and after-sales service network covering the national and overseas markets, we provide full-service services such as operation training and remote diagnosis to ensure that customers are worry-free and minimize downtime.
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– CELL INSTRUMENTS