GBPI GB-LSS – Leak and Seal Strength Tester (Burst & Creep Method)
- Advanced multi-mode leak and seal strength tester for flexible pouches, medical sterile barrier packages, and rigid caps
- Full testing compliance with ASTM F1140, ASTM F2054, ISO 11607-1, ISO 11607-2, and GB 10440
- Supports Burst Testing, Creep Testing, Creep-to-Failure, and high-pressure seal integrity leak evaluation
- High-pressure testing range from 0 to 1.0 MPa (10 bar) with class-leading sensor accuracy of 0.5% F.S.
- Dual test configurations: Restrained Platen fixture (ASTM F2054) and Unrestrained free expansion mode (ASTM F1140)
- Accommodates diverse specimen formats up to 400 mm sealing length with specialized probe insertion fixtures
- Integrated color touchscreen terminal displaying real-time pressure-time inflation curves and automated burst peak capture
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The GBPI GB-LSS is a heavy-duty, high-precision leak and seal strength tester engineered to evaluate the internal pressurization burst resistance, creep deformation, creep-to-failure endurance, and package integrity of flexible pouches, aseptic medical packaging, rigid plastic closures, and collapsible squeeze tubes. Built in strict conformity with international packaging standards including ASTM F1140 (unrestrained internal pressurization failure resistance of packages), ASTM F2054 (burst testing of flexible packaging seals using internal air pressurization within restraining plates), and ISO 11607-1/2 for medical device packaging validation, this instrument delivers definitive seal performance analytics.
During transportation, air shipment altitude changes, and automated sterilization autoclaving, sealed containers experience substantial internal pressure differentials. If seal joints exhibit weak fusion or localized micro-defects, packages rupture or suffer unnoticeable slow leakage, compromising sterility and shelf stability. Operating as a comprehensive leak and seal strength tester, the GBPI GB-LSS injects positive-pressure compressed gas directly into the package interior via an airtight injection septum needle or customized port adapter, continuously recording internal pressure rise until catastrophic seal rupture or pressure decay occurs.
Versatile Testing Modes: Burst, Creep & Failure Analysis
The instrument provides three primary test modes: Burst Mode rapidly pressurizes the package until the weakest seal perimeter blows out, capturing the absolute maximum burst peak pressure; Creep Mode pressurizes the package to a predetermined threshold and holds it for a set duration to verify whether seals hold without rupture; and Creep-to-Failure Mode holds a constant pressure plateau until ultimate joint separation occurs, establishing long-term seal fatigue limits.
Restrained & Unrestrained Platen Versatility
Equipped with an adjustable rigid restraining platen assembly, the GB-LSS restricts pouch pillowing, compelling air pressure to act uniformly along the seal perimeter in accordance with ASTM F2054. For irregular packaging, unrestrained free inflation provides realistic unconfined burst profiles.
With comprehensive data logging, live pressure-time curve graphics, and multi-level operator security, the GB-LSS is an indispensable instrument for pharmaceutical converters, retort pouch producers, and medical device manufacturers.
GBPI GB-LSS Leak & Seal Strength Tester – Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Test Principle | Positive Internal Air Pressurization (Burst, Creep, and Creep-to-Failure) |
| Applicable Standards | ASTM F1140, ASTM F2054, ISO 11607-1, ISO 11607-2, GB 10440, GB 18454 |
| Seal Strength Pressure Range | 0 ~ 1.0 MPa (0 ~ 10 bar / 0 ~ 145 psi) |
| Leakage Pressure Test Range | 0 ~ 100 kPa (Pressure decay sensitivity) |
| Sensor Measurement Accuracy | ±0.5% of Full Scale (High-resolution digital transducer) |
| Test Modes | Burst Test, Creep Test, Creep-to-Failure Test, Pressure Decay Leak Test |
| Sample Size Range | Sealing length up to 400 mm (Accommodates standard and large pouches) |
| Restraining Plate Gap Setting | Adjustable from 6 mm to 50 mm (ASTM F2054 compliance) |
| Gas Supply Requirement | Compressed air, 0.4 ~ 1.0 MPa (Standard Φ6 mm pneumatic tube interface) |
| Main Unit Dimensions | 450 mm (L) × 340 mm (W) × 230 mm (H) |
| Restraining Platen Fixture Dimensions | 500 mm (L) × 250 mm (W) × 280 mm (H) |
| Total Weight & Power | Weight: Approx. 125 kg (Total assembly); Power: AC 220 V, 50 Hz, 100 W |
Key Features & Engineering Highlights
- Multiple Standard Testing Modes: Supports Burst, Creep, and Creep-to-Failure in accordance with ASTM F1140 and ASTM F2054.
- Broad High-Pressure Capacity: Delivers test pressures up to 1.0 MPa (10 bar), capable of evaluating both delicate pouches and heavy-duty industrial bags.
- Restrained Platen Optimization: Rigid restraining plates distribute internal pressure evenly across the perimeter, preventing false ballooning rupture.
- Microprocessor Dynamic Control: Real-time high-speed data sampling captures the microsecond burst peak point with outstanding repeatability.
- Real-Time Graphical Display: Touchscreen interface plots the pressure-time curve dynamically, revealing elastic deformation and yield phenomena.
- Automated Pneumatic Clamping: Heavy-duty pneumatic clamping cylinder secures restraining platens with safety interlocks during high-pressure testing.
- Universal Specimen Adaptability: Features interchangeable injection probes, tube fixtures, bottle neck adaptors, and custom fittings.
Standard Package & Accessories
| Item Description | Quantity |
|---|---|
| GBPI GB-LSS Leak & Seal Strength Tester Mainframe | 1 Unit |
| Heavy-Duty Restrained Platen Test Fixture (ASTM F2054) | 1 Set |
| Pouch Piercing Injection Probe Assembly & Adhesive Septum Seals | 1 Set |
| Pneumatic Gas Input Hose (Φ6 mm) & Pressure Regulator | 1 Set |
| Power Supply Cable & Safety Ground Wire | 1 Set |
| Operating Manual & Calibration Certificate | 1 Set |
Target Industry Applications
Medical & Pharmaceutical Packaging
Validating Tyvek header pouches, sterilization reel bags, suture packs, and sterile medical device barrier enclosures under ISO 11607.
Food & Beverage Packaging
Assessing retort pouch withstand pressure during thermal processing, coffee bean one-way valve bags, and snack pillow pouches.
Tubes, Bottles & Caps
Testing crimp burst pressure of aluminum toothpaste tubes, cosmetic squeeze tubes, and tamper-evident threaded bottle caps.
Liquid Detergent & Chemical Pouches
Evaluating puncture resistance and corner seal strength of heavy-duty liquid laundry detergent pouches and industrial chemical bags.