GBPI GB-M – Intelligent Seal Performance & Leakage Tester
- Standard laboratory seal performance and leakage tester utilizing the submerged bubble emission vacuum chamber method
- Full testing compliance with ASTM D3078, GB/T 15171, and pharmaceutical packaging hermeticity standards
- Controlled digital vacuum generation from 0 to -95 kPa with precision accuracy of ±1 kPa
- Crystal-clear heavy-duty PMMA acrylic vacuum chamber providing 360-degree visual observation of leak bubble emergence
- Automated vacuum dwell timing from 0.1 s to 9999.9 s with automatic back-flush vacuum termination
- Standard vacuum chamber effective size of Φ270 mm × 270 mm (customizable up to Φ300 × 350 mm)
- Ideal for food pouches, blister packs, plastic bottles, metal cans, and medical device sterile barrier packaging
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The GBPI GB-M is an industry-benchmark seal performance and leakage tester designed to assess the hermetic seal integrity, pinhole leak-tightness, and closure reliability of flexible packages, rigid containers, pharmaceutical blister cards, and electronic components. Built in strict accordance with ASTM D3078 (standard test method for determination of leaks in flexible packaging by bubble emission) and GB/T 15171, this instrument provides packaging engineers with an intuitive, standardized quality control method to verify seal barrier performance before market distribution.
Packaging leakage is one of the most frequent causes of premature food spoilage, moisture ingress in dry pharmaceuticals, and loss of sterile barrier integrity in medical devices. Sub-millimeter pinholes, micro-cracks along thermoformed edges, and incomplete heat-seal bonding cannot be detected by tactile inspection alone. Operating as a precision seal performance and leakage tester, the GBPI GB-M subjects submerged test specimens to an evacuated negative-pressure environment inside an aqueous acrylic test chamber. By establishing a controlled pressure differential between the package interior and external water column, gas trapped inside the packaging expands and steadily escapes through any orifice, generating continuous streams of visible bubbles that pinpoint the exact leakage location.
High-Clarity PMMA Acrylic Vacuum Chamber
The test chamber is precision-machined from seamless, high-transparency polymethyl methacrylate (PMMA) with a heavy-wall construction that resists mechanical deflection under deep negative pressure. Operators enjoy an unobstructed 360-degree field of view to inspect seal perimeters, pouch gussets, and closure interfaces during the immersion cycle.
Microprocessor Control & Automated Evacuation
The GB-M features digital microprocessor control that allows laboratory technicians to preset exact vacuum targets (up to -95 kPa) and dwell durations. Once initiated, the internal high-efficiency Venturi vacuum ejector rapidly evacuates the chamber, maintains the target vacuum level with ±1 kPa stability, and automatically vents atmospheric air back into the chamber upon cycle completion.
Widely utilized across food processing plants, cosmetics manufacturers, pharmaceutical packaging lines, and third-party inspection agencies, the GB-M delivers reliable seal validation essential for shelf-life security.
GBPI GB-M Seal Performance & Leakage Tester – Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Test Principle | Submerged Aqueous Bubble Emission under Controlled Vacuum Differential |
| Applicable Standards | ASTM D3078, GB/T 15171, ISO 20484 |
| Vacuum Range | 0 ~ -95 kPa (Continuously adjustable) |
| Vacuum Precision | ±1 kPa (High-precision electronic pressure sensor) |
| Vacuum Holding Dwell Time | 0.1 s ~ 9999.9 s (Digital countdown display) |
| Standard Vacuum Chamber Size | Effective inner dimensions: Φ270 mm × 270 mm (Height) |
| Optional Chamber Dimensions | Φ300 mm × 390 mm, Φ360 mm × 585 mm, or customized sizes |
| Compressed Air Requirement | 0.7 ~ 0.8 MPa (Air consumption: approximately 20 L/min) |
| Pneumatic Gas Port Interface | Φ6 mm polyurethane rapid pneumatic tube |
| Controller Unit Dimensions | 580 mm (L) × 345 mm (W) × 440 mm (H) |
| Total Net Weight | Approximately 12 kg |
| Power Supply & Rating | AC 220 V ±10%, 50 Hz / 60 Hz; Total Power: 100 W |
Key Features & Engineering Highlights
- Compliance with ASTM D3078: Directly follows international standards for bubble emission leak testing in flexible and semi-rigid packaging.
- Digital Microprocessor Vacuum Regulation: Eliminates manual needle valve adjustments, automatically reaching and maintaining the set negative pressure.
- Crystal-Clear Seamless Acrylic Chamber: Heavy-duty PMMA cylinder offers superior structural integrity under deep vacuum and panoramic visual monitoring.
- Automated Cycle Execution: Automatically executes vacuum ramp, dwell timing, and atmospheric back-flush venting upon test completion.
- Precision Pressure Transducer: Digital sensor provides stable vacuum feedback with precision within ±1 kPa across the entire measurement range.
- Dual Operation Flexibility: Compatible with central laboratory compressed air networks via integrated Venturi vacuum generator.
- Non-Corrosive Fluid Submersion Rig: Includes stainless steel submersing mesh plate that holds buoyant packaging securely beneath the water line.
Standard Package & Accessories
| Item Description | Quantity |
|---|---|
| GBPI GB-M Digital Leakage Tester Main Controller Unit | 1 Unit |
| Heavy-Duty PMMA Acrylic Vacuum Chamber (Φ270 mm × 270 mm) | 1 Unit |
| Perforated Stainless Steel Specimen Submersion Holding Plate | 1 Pc |
| Pneumatic Connection Tubing & Quick-Coupling Fittings | 1 Set |
| Power Supply Cable & Grounding Lead | 1 Set |
| Operating Manual & Factory Calibration Certificate | 1 Set |
Target Industry Applications
Food & Beverage Packaging
Verifying hermetic seals on potato chip pouches, coffee bags, vacuum-sealed cheese, retort pouches, and beverage bottle screw caps.
Pharmaceuticals & Medical Devices
Testing blister pack cavities, surgical glove pouches, intravenous fluid bags, and sterile barrier medical packaging for micro-leaks.
Cosmetics & Personal Care
Inspecting shampoo pump dispensers, facial cream tubes, lotion jars, and wet wipe flow-packs against transport leakage.
Chemical & Industrial Packaging
Evaluating hazardous chemical bottles, motor oil canisters, lubricant pouches, and electronic component moisture barrier bags.