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)
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
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
i-Leaktek 6600 is designed for the seal strength and seal performance of various heat sealed flexible packages, sterilized packages and pilfer-proof closures. Leak characteristics of packages can be measured too.
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 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 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.