HDK (HOT DRAW KNITTER)
INTRODUCTION
The uniformity of POY is essential. The irregular POY packages need to be identified and prevented from entering the production line. The textile industry heavily relies on the knit-dye-grade method to qualify the POY packages. Preparing uniform knit samples is the most critical step during this process.
The Hot Draw Knitter, HDK, is a high-speed, precision knitting machine with a built-in stitch control system to check the uniformity and the consistency of the POY production quickly and accurately. It is ideal for use in production control and R&D labs as well as dyeing plants.
POY, MOY and LOY samples from 10d up to 2000d can be knit with the HDK. (Please consult Lawson Hemphill to knit higher or lower denier yarns).
The machine can be equipped with a non-contact Vapor heater and contact Pin heater to allow testing both polyester and nylon yarns. Precision Draw ratios are available from 1:1 to 1:3, with increments of 0.05.
A Draw Force Test option is available to measure the tension on the yarn as it is being drawn and knitted. With the Draw Force measurement, the HDK becomes the only instrument that provides a knit sample and draw force results on a package at the same time. This test complies with ASTM 5344, Standard Method for Extension Force of Partially Oriented Yarn.
APPLICATIONS
POY (Partially Oriented Yarn), Solution dyed fibers, MOY (Medium Oriented Yarn), Nylon, LOY (Low Oriented Yarn), Polyester, DTY (Draw Textured Yarn), Polypropylene, And Others
FEATURES
- Precision lab knitting machine with Stitch Control System to prepare standard knit fabric samples to check the uniformity and the consistency of the POY production quickly and accurately
- Ability to knit POY, MOY and LOY yarn samples
- Non-contact Vapor Heater (max 2050C) and contact Pin heater (max 2500C) are available to test polyester and nylon yarns on the same machine
- Precision Draw Ratio rolls from 1:1 to 1:3, with increments of 0.05 are available
- Nine different cylinder sizes to knit yarns from 10d up to 2000d. (Please consult Lawson Hemphill to knit higher or lower denier ranges.)
- Interchangeable knitting cylinders that can be used in all Lawson Hemphill knitting machines
- Maintains constant course length with the Yarn Meterhead to ensure uniform loop size
- Maintains constant tension on the yarn with the Air Servo/Stitch Cam Regulator
- Features fabric take-up assembly to collect the fabric sample under controlled tension
AVAILABLE OPTIONS
- Package Changer for automatic operation
- Available with Draw Force option to measure the tension on the yarn as it is being drawn and knitted.
- This test complies with ASTM 5344, Standard Method for Extension Force of Partially Oriented Yarn
INSTRUMENT SIZE
| Width | 41.5 in. (105.4 cm) | ||
| Length: | 21.5 in. (54.6 cm) | ||
| Height:: | 53 in. (134.6 cm) | ||
| Weight: | 400lbs. (408 kg) |
CONNECTIONS
Electrical: 115/220 VAC- 50-60 Hz (consult LH for other power supply)
Air: 60PSI (clean air required)
ORDERING INFORMATION
Catalog Number: LH-123
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PDF Product Sheet:
Product Video
Hot Draw Knitter (HDK) with Draw Force Test
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