The PVC film shrinkage tester developed by Jinan Sanquan Zhongshi Experimental Instrument Co., Ltd. is suitable for the heat shrinkage of PVC film testing materials. It can be used for other plastic film substrates (POF film, PE film, PET film, A heat shrinkable film such as an OPS film, a flexible packaging composite film, a PVC polyvinyl chloride sheet, a solar battery back sheet, and other materials having heat shrinkage properties. PVC film shrinkage testing machine is widely used in quality inspection institutions, packaging materials plants and other units.
Test principle:
The heat shrink meter accurately controls the temperature of the heat carrier oil in the heating tank, cuts the sample into a certain size, and puts it into a certain amount in the heating tank. After the time is reached, the sample is taken out, and after cooling to room temperature, the size of the sample is taken, and the heat is calculated. Shrinkage.
PVC film shrinkage tester experimental method
1 Mark a symmetry axis in the longitudinal and lateral directions of the specimen, and mark the vertical and horizontal directions.
2 Place the sample flat between the two frames, then quickly immerse it in a constant temperature medium of 120±2°C (the heat transfer medium is usually glycerin), shrink it freely, take it out after 20S, immerse it in a spare room temperature bath, and take it out after cooling for 5s. Sample, horizontally rest, measure the vertical and horizontal axis of symmetry within 30 minutes.
3 Accurate to 1mm and record the measurement data.
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