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The fiber thermal shrinkage tester is lately developed based on the digital technology. It is applied to the dry thermal shrinkage test of staple chemical fibers. The instrument is read by the imaging device in turn to read the changes of the fiber length before and after the heating of the fiber on the cylinder frame, and the average heat shrinkage and coefficient of variation of the fiber are calculated automatically. The test process is monitored by the computer and the test results are automatically displayed and printed.

The instrument can meet the requirements of FZ / T50004-1991 standard, and it can be widely used in chemical fiber, textile and other production enterprises, fiber inspection institutions and scientific research units for single chemical fiber thermal shrinkage test.

FZ/T50004-1991Test method for shrinkage in hot air of polyester staple fibers

Items	Parameters
Measuring range of thermal shrinkage	0～25％
Precision	±0.01mm
Error of the thermal shrinkage	≤±0.1％
Gauge between the upper and the lower clamp	20mm±1mm
Number of objective fibers on the sample cylinder	35
Power	220V±10％
Weight	20kg
Size	450×300×360(mm)

◆ Instrument structure is compact
◆ Application of image processing technology makes the instrument measurement fast
◆ The test results are accurate and stable
◆ Easy to operate
◆ Instrument failure rate is small