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KNITTING

FAK-S PRECISION LAB KNITTING MACHINE

LH-122 FAK-S

The Lawson Hemphill FAK-Sampler, FAK-S is recognized as the worldwide standard for lab knitting machines. It is a high-speed, precision knitting machine designed to check uniformity and consistency of the yarn quickly and accurately. It is ideal for use in production control and R&D labs as well as dyeing plants.

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In any knitting application, the yarn tension and the yarn feed controls are critical to ensure fabric uniformity. Any changes in these variables during knitting will cause irregularities, creating a defective fabric. The FAK-S has a built-in Stitch Control System, which ensures the preparation of the standard samples of knit fabric for yarn quality control purposes. The machine also features a take-up assembly to collect the fabric under controlled tension to further ensure fabric uniformity.

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The FAK-S can knit all types of yarns, including synthetic and natural fibers as well as monofilament, filament, elastomeric and spun yarns. Nine different cylinder sizes are available to knit yarns from 10d up to 2000d. All knitting cylinders are interchangeable and can be used with all Lawson Hemphill knitters. (Please consult Lawson Hemphill for knitting higher or lower denier yarns).

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  • Precision lab knitting machine with Stitch Control System to prepare standard samples of knit fabric for quality control purposes

  • Ability to knit all types of yarns, including synthetic and natural fibers as well as monofilament, filament, elastomeric and spun yarns

  • The only sample knitting machine trusted with spectrophotometer for color and dye analysis

  • 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 to eliminate fabric defects such as barre, which is caused by tension variation during knitting

  • Features fabric take-up assembly to collect the fabric under controlled tension to ensure fabric uniformity

  • Nine different cylinder sizes available to knit yarns from 10d up to 2000d (Please consult us for higher or lower denier ranges.)

  • Interchangeable knitting cylinders that can be used in all Lawson Hemphill knitting machines

KNITTING

HDK HOT DRAW KNITTER

LH-123 HDK

The uniformity of POY (Partially Oriented Yarn) is essential. The irregular POY packages need to be identified and prevented from entering the production line. The textile industry relies on the knit-dye-grade method to qualify the POY packages. Preparing uniform knit samples is the most critical step during this process.

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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.

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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).

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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.

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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.

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  • Input Tension Control

  • Output Tension Measurement & Optical Yarn Break Detector

  • Electronic Drives (10-500 m/min)

  • Positive Yarn Feeder (EYF LH 455) Optional

HDK

HDK-DFT HOT DRAW KNITTER with DRAW FORCE TESTER

LH-123A HDK-DFT
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KNITTING

Hot Draw Knitter with Draw Force Tester, HDK-DFT, is a precision knitting machine with automatic stitch control system and a Draw Force measurement to check 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.

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The HDK-DFT is the only instrument that provides a knit sample and draw force results on a package at the same time. This test complies with ASTM D 5344, Standard Method for Extension Force of Partially Oriented Yarn.

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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 of both polyester and nylon yarns. Precision Draw ratios are available from 1:1 to 1:3, with increments of 0.05.

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Windows based and user friendly DFT software program provides real-time tension data on the yarn as it is being drawn and knitted. Accept/Reject limits can be defined by the operator. The test results and the tension graphs are saved in common file formats. DFT software includes the ability to run draw force tests under increasing temperature levels to determine optimum settings and critical temperatures for the yarn under test.

  • Precision knitting machine with automatic Stitch Control and Draw Force Measurement system

  • Provides a standard knit fabric sample and draw force results on the same POY package at the same time to check the uniformity and the consistency of the POY production quickly and accurately

  • Complies with ASTM D 5344, Standard method for Extension Force of Partially Oriented Yarn

  • Ability knit POY, MOY and LOY yarn samples

  • Non-contact Vapor Heater (max 205°C) and contact Pin heater (max 250°C) 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 yarns.)

  • 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

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