Seal Strength Tester

Seal strength testing evaluates the mechanical strength of the seal, assuring proper bonding to maintain package integrity throughout the life of the package. Here we address two basic typle of seal strength testing: tensile strength testing (ASTM F88) and burst or crepp testing (ASTM F1140 & ASTM F2054)

Seal Strength Testing
Test conditions based on ASTM F88

One-inch wide samples are cut perpendicular to the seal and pulled apart at a constant speed (usually 12 inches/minute) when mounted in the grippers of the instrument. The force required to separate the two sealed substrates is measured and reported as x lbs/inch width.

ASTM F88 -- Standard Test Method for Seal Strength of Flexible Barrier Materials

Burst and Creep Testing
Test conditions based on ASTM F1140, F2054

LSSD-01 Leak and Seal Strength Tester is professionally applicable to the quantitative determination of seal performance, seal quality, burst pressure, compression resistance, torsion force and joint/disengaging force of flexible packages, aseptic packages, various plastic pilfer-proof closures, flexible tubes, caps and other materials.

  • Burst Test: Fill the package with air until it bursts and measuring the terminal pressure.The method can be used with the package unrestrained or within restraining plastes to simulate packages stressed in various situations.
  • Creep Test: Inflate the package to a constant pressure and then check if the pressure in the package can hold a specific time. the suggested pressure in ASTM F1140 is about 80% of burst pressure.

ASTM F1140 -- Standard Test Methods for Internal Pressurization Failure Resistance of Unrestrained Packages for Medical Applications
ASTM F2054 -- Standard Test Method for Burst Testing of Flexible Package Seals Using Internal Air Pressurization within Restraining Plates

Heat Seal Tester

Heat Seal Testers are used for the determination of heatsealability of plastic films, composite films, coated paper, and other sealing films under certain sealing speed, pressure

Tensile Strength Tester

Tensile Strength Tester includes Tensile Strength, Shear, Peel Strength, Tear Strenth and Seal Strength Test. 6 Models are available for customer choices according their requirements.

LSSD-01 Leak and Seal Strength Detector

LSSD-01 is designed for leak detection and seal strength test, including creep test and burst test in one instrument. It can be used for measurement of heat seal edge of flexible packages that are made by heat seal and adhesive processing.

PSST-100 Portable Heat Seal Strength Tester

PSST-100 Heat Seal Strength Tester is a professional heat seal strength tester for plastic films, composite films and other materials. This instrument is suitable for on-site quantitative inspection.