Hot Air Thermal Shrinkage Tester Application
Testador de retração térmica por ar quente conforms to ASTM D5591 and ASTM D4974 and is used for the measurement of the thermal shrinkage force and rate of yarns and cords in air at controlled temperature. It is applicable to yarns and cords made of nylon, polyester and other polymers, etc.
Hot Air Thermal Shrinkage Tester Principles
ASTM D4974 shrink rate test:
A relaxed specimen of yarn or cord is subjected to dry heat for a specified time under a specified tension. The percent of shrinkage is displayed on the screen while the specimen is still under tension and exposed to heat.
ASTM D5591 shrink rate test:
A specified length of yarn or cord is fixed at a grip and the other end is mounted with a pretension mass, then the mass is removed and the end was connected to a loadcell. After that the yarn or cord is exposed to dry heat at a controlled temperature. The shrinkage force induced in the specimen is read from the tester.
The Thermal Shrinkage Tester advantages
1. It can measure the thermal shrinkage force and rate of yarns and cords in air at a controlled temperature
2. It can be used for yarns and cords made of nylon, polyester, and other polymers
3. It can be used for quality control and inspection
4. It can test the heat shrinkage performance and quality of PVC hard sheet batches
Technical Features OF Heat Shrinkage Testing Machine
1. Made of metal material, strong and durable.
2. Easy and user-friendly operation procedures.
3. Highly integrated design and easy to carry.
4. Thermal type micro printer.
5. Large touch screen display and operation.
6. RS232 Port and profession PC software are optional. (Stand-alone model and PC model)
Technical Information
1. Conditions of use: -10～+40℃, RH: 45%～85%, no vibration;
2. Temperature Range and Accuracy: Ambient~250°C; ±0.1°C;
3. Shrinkage Resolution: 0.01% (100% is 250mm);
4. Shrink Force Resolution: 0.01N
5. Shrink Force Range: 0~50N (Customization Available)
6. Test time: 0.1~60min;
7. Power: AC220V, 50Hz;
8. Maximum Heating Power: 1000W
9. Pre-tensioned weights: A 200g combination, a 150g combination, a 100g combination, a50g combination, a 20g combination, 50g*1PCS , 20g*2PCS , 10g*1PCS , 5g*1 PCS, 2g*2PCS, 1g*1PCS (weights can be applied in combination according to the sample size and the range of applied tension)
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