HST/S Hot Shrinkage Force Tester – Latest
The HST/S Hot Shrinkage Force Tester precisely measures both Shrinkage % and Shrinkage Force (cN) on industrial yarn. The system is a fully enclosed unit that maintains a controlled, draft-free atmosphere as the test progresses, ensuring consistent and repeatable results.
Dual non-contact heaters are programmable up to 350°C following PID logic for independent, constant temperature control. The standard load cell capacity is 3000 gms, with one or two load cells available depending on application requirements. Optional high temperature heaters up to 450°C are also available.
With a world-leading shrinkage measuring range of 0% to 500%, touch screen control, friction-free pulley measurement, and USB-based test report and graph printing, the HST/S is the most complete hot shrinkage testing solution available for yarn manufacturers.
Specifications
Shrinkage % Range
0% to 500% (world largest measuring range), Accuracy ± 0.1%
Testing Temperature
RT to 350°C (Optional: up to 450°C)
Temperature Distribution
Constant ± 1°C in at least 90% of heater length
Temperature Resolution
0.1°C
Testing Time
0–500.0 minutes (Customizable)
Shrinkage Resolution
0.1%
Shrinkage Force (Optional)
1 to 3000 cN (Customizable), Accuracy < 0.2%
Force Resolution
1.0 cN (= 0.01 N)
Pretensioning
0 to 500 cN (depends on test sample)
Power Supply
220–230V AC / 50 Hz, 600 W
Weight
45 Kg
Dimensions
500 × 480 × 320 mm (L × W × H)
System Features
Automated testing system for simultaneous measurement of Shrinkage % and Shrinkage Force (cN) on industrial yarn
Enclosed system that maintains a draft-free, controlled atmosphere throughout the entire test duration
Dual, non-contact heaters programmable from ambient to 350°C (optional customized up to 450°C) under constant PID temperature control
Standard 1 or 2 (Optional) load cells of 3000 gms with customer-configurable force range in cN depending on yarn type
Light duty or heavy duty clamp designs available for non-slip grip across yarn types from elastomeric yarns to tire cords
Friction-free pulley measuring Shrinkage % with ± 0.1% precision; Touch Screen control with easy-to-use software and USB port for test report & graph printing
Test Standards
ASTM D4974
ASTM D5591
EN 13844
Key Highlights
World's Largest Shrinkage Measuring Range
Measures shrinkage from 0% to 500% — the world's largest measuring range — with ± 0.1% accuracy via a friction-free pulley. Configurable shrinkage force measurement from 1 to 3000 cN with < 0.2% accuracy makes it versatile for elastomeric yarns through high-tenacity tire cords.
Dual Non-Contact Heaters with PID Control
Two non-contact heaters programmable from ambient to 350°C (optional 450°C) operate under PID logic for independent, constant temperature control with ± 1°C uniformity across at least 90% of the heater length — ensuring a stable and repeatable thermal test environment.
Touch Screen & USB Report Printing
The easy-to-use touch screen interface with intuitive software allows operators to program test parameters and monitor results in real time. A built-in USB port enables direct printing of test reports and graphs, eliminating manual data transcription and streamlining QC workflows.
The HST/S measures two key parameters on industrial yarn: Shrinkage % (dimensional change under heat) and Shrinkage Force (cN) — the restoring force generated as the yarn attempts to shrink. Both measurements are made simultaneously in a controlled, enclosed environment, making it ideal for yarn quality control in industrial textile manufacturing.
The standard HST/S operates from room temperature (RT) up to 350°C using dual non-contact heaters under PID control. Temperature uniformity is maintained at ± 1°C across at least 90% of the heater length. An optional customized high-temperature heater configuration extends the range up to 450°C for specialized applications.
The HST/S is suitable for a wide range of industrial yarns — from soft elastomeric yarns to high-tenacity tire cords. Light duty and heavy duty clamp designs are available to provide non-slip grip for different yarn types. The force range of 1–3000 cN is fully customizable to match the yarn's application and pretension requirements.
The HST/S measures shrinkage from 0% to 500% — claimed to be the world's largest measuring range for this type of instrument — with ± 0.1% accuracy and 0.1% resolution via a friction-free pulley system. The shrinkage range is fully customizable to suit specific yarn and testing program requirements.
Yes, the shrinkage force (load cell) attachment is an optional feature on the HST/S — please confirm at the time of ordering. Standard configurations include one load cell (optional two) with a 3000 gms capacity. The force range is customer-configurable in cN depending on the yarn type and test requirement, with accuracy < 0.2% and resolution of 1.0 cN.
The HST/S complies with ASTM D4974 (thermal shrinkage of yarn), ASTM D5591 (thermal shrinkage force of yarn), and EN 13844 (the European standard for determination of shrinkage force and shrinkage percentage of yarn). These standards are widely specified by industrial yarn manufacturers and quality control laboratories.
The HST/S is used by industrial yarn manufacturers, tyre cord producers, technical textile companies, and research laboratories. It is particularly important for polyester, nylon, aramid, and other thermoplastic yarn producers where shrinkage performance under heat is a critical quality parameter for downstream processing and end-use applications.
The HST/S operates on 220–230V AC, 50 Hz at 600 W and measures 500 × 480 × 320 mm (L × W × H) with a weight of 45 Kg. Its compact benchtop design makes it suitable for standard laboratory environments without requiring special floor space or high-power electrical infrastructure.
WHAT OUR CLIENTS SAY
Trusted by industries worldwide for precision testing equipment and reliable solutions.
Send Your Requirement
Looking for laboratory testing equipment, material testing machines, or customized automation systems? Share your requirement and our team will get back to you with the right solution.
WATCH APPLE ELECTRONIKS
Explore our precision testing machines, industrial solutions, and engineering capabilities through our company video.
- Precision-engineered testing machines
- Wide range of industrial testing solutions
- Customized systems based on requirements
- Serving textile, polymer, and electrical industries
- Focus on quality, accuracy, and reliability
