Leak & Seal Strength Tester
- ST-LS01
- Standard: 0～250kPa (0～36.3 psi)
- Class 0.5
- 0.4MPa～0.9MPa (air compressor to be prepared by user)
Positive Pressure Method Leakage and Seal Strength Tester Packages Burst Pressure Test Machine Plastic Bottle Caps Sealing Performance Tester Packages Heat Sealing Tester Package Leak and Seal Strength Detector Package Burst Strength Tester Package seal leakage performance Tester Leak and Seal Strength Tester Machine
Product Description
ST-LS01 Leak & Seal Strength Tester quantitatively tests seal strength, heat-seal quality, burst pressure of full bags and sealing leakage performance for flexible packages and sterile packages formed by heat sealing or adhesive bonding. It also conducts quantitative measurement of sealing performance of plastic tamper-evident caps, overall tightness, pressure resistance, cap detachment force, heat seal strength and binding strength of flexible tubes.
Besides, it can evaluate compression resistance, burst resistance of materials for flexible pouches, cap torque sealing indicators, cap pull-off strength, material stress resistance, overall bottle tightness and pressure resistance.
1. Application Fields
| Basic Applications | Burst strength test, creep test, creep-to-failure test for flexible pouches & paper-plastic composite bags |
|---|---|
| Extended Applications | Burst test for 3-side sealed open pouches; sealing test for tamper-evident caps; blister pack burst test; gross bubble leak test; pressure & sealing test for metal cans |
Note: Extended applications require customized pressure ranges, fixtures and auxiliary accessories.
2. Test Principles
2.1 Burst Test
Pressurize the flexible pouch internally until rupture. The maximum burst pressure the sample withstands before failure will be recorded.
2.2 Creep Test
Apply a fixed internal pressure and hold for specified duration. Samples with intact sealing without leakage are judged Pass; otherwise Fail.
2.3 Creep-to-Failure Test
Pressurize the pouch to a preset pressure and maintain until leakage occurs. Higher pressure is adopted compared with standard creep test to ensure package failure within reasonable time. The test records the holding time before leakage.
2.4 Gross Bubble Leak Test (Customized Whole Machine Required)
Pierce the package with a perforator to insert air supply and pressure monitor, then seal the piercing position with adhesive tape and rubber mat. Submerge the package about 2.5cm under water, inflate the sample and adjust pressure regulator to reach or exceed specified test pressure and maintain constant pressure. Inspect bubble streams from all damaged areas (seal channels, pinholes, ruptures, tears). Mark all leakage positions after taking samples out of water. This full set function needs customized configuration.
2.5 Cap Sealing Test (Customized Fixture Required)
Non-carbonated beverage caps
No leakage at 200kPa, no cap detachment at 350kPa.
Seal the cap at rated torque, pressurize to 200kPa and hold underwater for 1 minute to check air leakage. Then raise pressure to 350kPa and hold for another 1 minute to observe cap detachment.
Carbonated beverage caps
No leakage at 690kPa, no cap detachment at 1207kPa. Test procedure follows the same steps above.
2.6 Metal Can Pressure & Sealing Test (Customized Fixture Required)
Pressure Resistance Test
Inflate to 150kPa; for cans with height ≥ 2×diameter, hold 1 minute at 180kPa without permanent deformation.
Sealing Integrity Test
Inflate to 150kPa; for cans with height ≥ 2×diameter, hold 1 minute at 180kPa with zero leakage allowed.
3. Product Features
- Adopts positive pressure test principle.
- High-definition touch screen with menu interface for quick test operation and data review.
- Dual test modes: restrained inflation & unrestrained inflation, freely selectable for different test purposes.
- Multiple test modes including burst, creep and creep-to-failure to meet diverse testing demands.
- Optional test pressure ranges; one-click automatic test and intelligent design support non-standard customized testing.
- Password login on startup to prevent unauthorized operation; four-tier user login & operation authority management.
- Standard built-in mini thermal printer for fast test report output.
- Dual independent power supply for measurement-control system and execution system to guarantee stable operation.
- Automatic constant-pressure air replenishment to stabilize test conditions.
- Optional GMP compliant computer software: multi-level user authority management, test data export, electronic signature supported, fully compliant with pharmaceutical factory audit requirements.
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4. Technical Specifications
| Parameter | Specification |
|---|---|
| Test Pressure Range |
Standard: 0～250kPa (0～36.3 psi)
|
| Pressure Accuracy | Class 0.5 |
| Compressed Air Supply | 0.4MPa～0.9MPa (air compressor to be prepared by user) |
| Air Connector | Φ8mm PU polyurethane tube |
| Main Unit Dimension | 300mm(L) × 300mm(W) × 200mm(H) |
| Test Bench Dimension | 300mm(L) × 360mm(W) × 350mm(H) |
| Power Supply | AC 220V 50Hz |
| Net Weight | 20kg |
5. Compliant Standards
GB 10440, GB 18454, GB 19741, GB 17447, ASTM F1140, ASTM F2054, ISO 11607-1, ISO 11607-2, GB/T 17876, GB/T 10004, GB/T 10005, GB/T 17590, BB/T 0003, BB/T 0025, QB/T 1871, YY/T 0681, YBB0025-2005, YBB0016-2002
Note: Customized fixtures and test programs are required for tests complying with different standards.
6. Configuration List
Standard Configuration
Main tester unit, test bench, mini thermal printer
Optional Accessories
Restraint plate assembly, open pouch test fixture, plastic tamper-evident cap sealing test fixture, flexible tube sealing test fixture, aerosol valve sealing test fixture, full customized gross bubble leak test system
