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LB-2608 Packaging Bag Leak and Seal Positive Pressure Strength Tester (High-Definition Touchscreen)

It is suitable for testing the heat-seal strength and seal integrity of various packaging bags and containers. By measuring the material’s heat-seal strength and seal integrity, it enables control and adjustment of key production‑process parameters—such as bag opening characteristics and packaging machine speed—thereby ensuring compliance with product‑use requirements.

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Other Laboratory Testing Equipment

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LB-2608 Packaging Bag Leak and Seal Positive Pressure Strength Tester (High-Definition Touchscreen)

Description

Product Introduction:

It is suitable for testing the heat-seal strength and seal integrity of various packaging bags and containers. By measuring the material’s heat-seal strength and seal integrity, it enables control and adjustment of key production‑process parameters—such as bag opening characteristics and packaging‑machine speed—thereby ensuring compliance with product‑use requirements.

Reference standard:

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/T0681, YBB00252005, YBB00162002

Test principle:

Leak Test: After reaching the set pressure, maintain that pressure without replenishing it. If the pressure drop during the hold period exceeds the specified threshold, the sample is deemed non‑conforming; if the pressure drop remains within the threshold, the sample is deemed conforming.
Burst test: Once the pressure reaches the threshold, the burst‑detection phase begins; the test stops when the pressure drops to within a specified percentage of the maximum pressure, at which point the system automatically releases the air. During this process, the screen displays the recorded maximum pressure value. Pressure is regulated via the pressure‑adjustment valve on the side of the device; it is recommended to increase the pressure gradually to prevent rapid pressurization, which could lead to uneven pressure distribution between the sensor and the sample interior and introduce measurement errors.
Pressure Holding/Creep: Once the set pressure is reached, pressure holding begins. During the holding phase, if the pressure drops to (1 − accuracy%) of the set value, a pressure‑boosting step is performed to maintain the target pressure. If, during the holding phase, the pressure drop reaches the predefined threshold, the specimen is deemed to have ruptured, the test is terminated, and the specimen is classified as non‑conforming.
Creep to burst: After reaching the set pressure, maintain constant pressure. During the hold phase, if the pressure drops to (1 − accuracy%) of the set value, apply a compensating pressure to sustain the target level. If the pressure decline during the hold phase reaches the predefined threshold, the test is deemed to have reached the sample’s burst point; pressure holding is then discontinued, timing stops, and the timer is not reset.
Large‑scale leakage: Use a dedicated clamping fixture to press the bag underwater, inflate the test bag to a specified pressure, and visually inspect for leaks. The test duration is manually controlled and can be stopped by pressing the stop button.

Product Features:

Intelligent control enables one‑button operation for pressurization, pressure maintenance, timing, and pressure relief during testing, resulting in high test efficiency.
The test range is customizable, offering a wide measurement span and broad application versatility.
Dual test method for swelling inhibition and non‑swelling inhibition
Supports test attachments, offers flexible test modes, and ensures broad compatibility.
It employs imported SMC pneumatic components, ensuring durable performance and stable, reliable operation.

Technical Specifications:

Project	Indicator
Pressure range	0–500 kPa (optionally configurable to 0–1000 kPa)
Time range	0–99,999 seconds (optionally configurable to 0–9,999,999 seconds)
Pressure unit	kPa, MPa, PSI, Bar
Sources of Stress	0.7 MPa (7 kgf/cm²), air supply provided by the user
Air source interface	Φ8mm polyurethane tube
Screen display mode	7-inch color touchscreen (optional storage function)
Data Printing	Built-in high-speed thermal printer
Power supply	220V/50HZ/150W
External dimensions	300300310mm (width-depth-height)
Ambient operating temperature	10–40°C

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FAQs

Do you supply full-set testing instruments for asphalt and geotechnical engineering projects?

We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

We provide non-standard customization of test equipment and customized fixture clamps according to customers’ specimen size and test standards. All our testing machines enjoy 12-month factory warranty; overseas customers get remote online debugging guidance, spare parts supply and technical operation training. Our products have been exported to over 70 countries globally

Which materials can be measured by your Vicat softening point tester?

It measures heat deflection temperature and Vicat softening temperature of plastics, hard rubber, nylon, insulating materials and fiber-reinforced thermosetting composites. Intelligent temperature control guarantees precise heating rate, ideal for plastic raw material incoming inspection and formula development in plastic factories.

Does your pipe pressure burst testing machine control test temperature automatically? What’s its main application?

Yes, the constant-temperature circulating system keeps stable test environment during long-time hydrostatic resistance and instant burst pressure measurement of thermoplastic pipes. It complies with GB6111 standard and serves raw material inspection, new product R&D for plastic pipe manufacturers, third-party testing labs and university laboratories.

What kinds of pipes fit your ring stiffness tester? Can it do long-term creep testing?

This equipment is designed for HDPE, PVC corrugated pipes, plastic drainage pipes and various plastic tubular products. Apart from ring stiffness, ring flexibility and flattening tests, it supports continuous long-term creep tests up to 1000 hours (42 days) as required by industry specifications, widely used for pipe factories and construction quality inspection institutes.

What test items can your WDW series computer-controlled electronic universal testing machine complete? Which international standards can it meet?

Our WDW universal tester is applicable for tension, compression, bending, shearing and peeling tests of metal, plastic, rubber and composite materials. It supports test procedures in accordance with GB, ISO, ASTM, DIN, JIS multiple domestic and global standards. Equipped with high-precision servo drive and dedicated test software, it automatically collects, calculates and exports test data including tensile strength, elongation at break and elastic modulus.

Customer Reviews

European Plastic Pipe Manufacturer｜Purchase: Ring Stiffness & Hydrostatic Burst Tester

From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

2026.06.05

★★★★★

“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”

Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

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LB-2608 Packaging Bag Leak and Seal Positive Pressure Strength Tester (High-Definition Touchscreen)

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