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1658 G.A.R Highway, Suite 6

Swansea, MA 02777, USA

Tel:+1 (508) 679-5364

Fax: +1 (508) 679-5396

Email: Information@lawsonhemphill.com




DFT-HT is the newest addition to Lawson Hemphill line of Draw Force Testers. The instrument features 1000 meters/minute test speed and 500°C  hot air temperature on the running yarn.  It complies with  ASTM D 5344.

The system is Software Controlled to set the required Draw Ratio and Pre-Tension while maintaining constant air test temperature throughout the test. It is equipped with yarn guides that move the yarn in-out of the heater when testing is completed.  For maximum safety, DFT-HT doors remain closed during  the test.

The operator can start the test from either side of machine by pressing Quick Start Blue button or a single keyboard click. When equipped with Automatic or Manual Splice Package Changers, the DFT-HT  operates continuously.


High Speed and High Temperature precision Draw Force Tester with Electronic Drive System

Testing Speeds between 20-1000 meters/minute with electronic servo motors

Heater Temperature between 25-500°C

Real-time Draw Force Measurement for partially oriented yarn under constant extension

Software controlled, Electronic Pre-tension applied for the entire duration of the yarn testing

Automatic Yarn Guides to move the yarn in and out of the heater after test

Continuous operation with Automatic or Manual Splice Yarn Package Changers for maximum  test efficiency

Ability to start the test from both sides of  the machine

Closed door application for maximum safety

Effectively used to test POY, MOY and LOY

DFT-HT complies with ASTM D5344


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