LabthinkLabortory Heat Sealer


The HST-H3 is an extremely accurate heat sealer designed to enhance heated seals for the flexible packaging industry. This instrument is based on heat sealing method and applicable in determination of proper sealing temperature, sealing pressure and dwell time of packaging films. The instrument conforms to ASTM F2029 -- Standard Practices for Making Heatseals for Determination of Heatsealability of Flexible Webs as Measured by Seal Strength. Sealing Temperature



Adopt Digital P.I.D. temperature control technology


  • Get defaulted temperature, efficiently and accurately


  • Digitally display temperature value for easy and friendly use


  • Independent upper and lower sealing temperatures


Sealing Pressure


  • Controlled by micro computer


  • Electronic Pressure Timer, digital display pressure value


  • High precise pressure sensor


  • Dual underneath and closed loop-type of gas cylinders ensure even pressure of sealing surface


Dwell Time


  • Electronic Timer, Digital display dwell time


  • Special design for measuring accurate dwell time on the sealing sample


Sealing Jaws


  • Extended sealing surface can seal large or several specimens at the same time


  • Up to 330mm sealing area (customization available)


  • Special Design to make sure the even temperature across the whole sealing jaws


  • Sealing Surface can be customized into different shapes


  • Safe use caution sign



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