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Factory Direct Sale Leak and Seal Strength of Seal Meal Bags

Testing the integrity helps ensure that the sample provides required product protection.


The pressure decay method is employed to conduct tests. It involves internally pressurizing food saver bags or other sealed packages to assess their maximum durability.


Test Method

Please follow these steps to test the food saver bag:

  1. Securely attach the food saver bag onto the fixture.
  2. Apply pressure to the food saver bag until it reaches the desired pressure level.
  3. Disconnect the air source to seal off the bag.
  4. Verify the pressure level, and if it drops, it indicates a leak in the food saver bag.
  5. There are three standard testing methods available: a, b, and c.

Test Method a (Burst Test):

  • Position the package in the apparatus and gradually increase the internal pressure until it fails.

Test Method b1 (Creep Test):

  • Position the package in the testing apparatus, apply pressure internally to the specified level, and maintain that pressure for a designated period.

Test Method b2 (Creep to Failure):

  • Similar to test method b, but in this case, the pressure is sustained until the package fails

Technical Features

☛PLC controlled unit (industrial level stable) and HMI touch screen operated.

☛The tester is able to realize three test modes of burst, creep and creep to failure.

☛Test result auto statistics and storage.

☛Sensitivity and threshold personalized setting.

☛Restraining plates can be equipped.

☛Program customization available.

☛Standard pressure up to 600KPa (87 psi) and can be modified to user requirement

☛Compatible with other form of fixtures to facilitate tests to package form like open package (three-side-seal), closed package, doy pack, tube, sealed tray and cup, etc.

Main Parameters

Test Range                     0~-600KPa

Sample Width               300mm (standard)

Inflating Head               Φ4mm

Compressed Air            0.4~0.7MPa ( Prepared by user)

Power                              110~220V 50/60Hz


Jigs Available

The LSST-01 control unit can work with many standard and customize jigs for different applications and sample forms, such as sachet, bag, pouch, tube, bottle, doy pack, cell battery, jumbo bag, etc. Please contact our sales for a customized plan.



ASTM F2054 Standard Test Method for Burst Testing of Flexible Package Seals Using Internal Air Pressurization Within Restraining Plates

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