HST-02 Heat Seal Tester

Heat Seal Tester HST-02 heats the plastic film into a viscous flow state, and then with certain pressure and through certain time, the two layers of film are fused into one. After cooling, the sample seal strength and sealability are further analyzed by other mechanical tests.

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After heat seal tester heat seals the sample, the sample is taken to further mechanical analysis ,then the material's best heat sealing time, pressure and temperature are determined. The process is to ensure that the material can withstand a certain amount of external force during packaging, transportation, storage and consumption without cracking or leaking.

Test Principle

The sample are placed between upper and lower sealing jaws when the preset temperature is reached, then upper jaw moves down to exert preset pressure on the sample, in a preset time interval. Then the sample is taken away from the heat sealing area to keep cool, for further analysis.

HST-02 is first generation heat sealer developed by Cell Instruments. It has below features.

1. Both manual and foot switch jaw movement control available. Humanized structure design.
2. Brand digital P.I.D. temperature control for precise temperature parameter.
3. Jaws are heated evenly to prevent leakage and uneven sealing.
4. Independent temperature control of the upper and lower sealing jaws.
5. Non-standard size heat sealing jaws and patterns can be customized.

Item	Parameters
Sealing Temperature	Ambient~300℃
Temperature Accuracy	±0.2℃
Heat Seal Dwell Time	0.1~9999S
Sealing Pressure	0.15MPa~0.7MPa
Sealing Surface	330mm*10mm Teflon(customization available)
Jaw Heating	Doube Heating
Output	0.7 MPa by Ф 6mm pipe by user
Power	220V

ASTM F2029-16(2021)
Standard Practices for Making Laboratory Heat Seals for Determination of Heat Sealability of Flexible Barrier Materials as Measured by Seal Strength