Knitted Fabric Stretch Recovery Tester TF155
Knitted Fabric Stretch Recovery Tester, conforms to ASTM D2594, to determine the stretch properties of knitted fabrics from stretch yarns under a specified tension and extension, including constant load test frame and constant extension test frame.
Description
Application
The Knitted Fabric Stretch Recovery Tester is suitable for testing the stretch recovery properties of low-stretch knitted fabrics. Examples include low-stretch knitwear such as swimwear, sportswear, and loose or other tight-fitting garments. What’s more, not only this knitted fabric elastic properties testing instrument can perform a constant load test, measuring the elongation of an elastic fabric under a certain tension and calculating the elongation, but also can conduct a constant elongation test, testing the elongation of the fabric to a specified elongation, recording the change in the elongation of the fabric with the tension removed and calculating the elastic recovery and residual deformation.
In addition, this tester is for knitted stretch and recovery tests, but TESTEX also has stretch recovery testers for woven fabric.
Test principle
Applying an elastic fabric to a certain amount of tension, the fabric will elongate under the tension. When the fabric elongates to a specified amount of elongation, the fabric will recover with the tension removed.
Specifications
- Test station: 6
- Made of stainless steel
- Upper hanger: 6
- Lower hanger: 6
- The width of the hanger: 140 mm
- 5 lb and 10 lb tension weights are offered
Weight
| 50 Kg |
Dimensions
| Length: 1070 mm | Width: 440 mm | Height: 1080 mm |
Standards
| ASTM D2594 |
Features
- Both constant load and constant elongation tests in one machine.
- Equipped with a special elongation scale for easy marking, measuring, and calculation.
- Each station has a timer for easy recording of test time.
- Specimen holder with quick clamping jaws for fast and efficient specimen clamping.
- Flexible sliding specimen holder with positioning block for fixing anywhere on the guide rail.
- The frame, guide rails, and specimen are made of high-quality aluminum, so it has well thickness and strength.
- Made of stainless steel, weights, are corrosion-resistant and rust-free.
- The feet adopt horizontal adjusting castors, so it is easy to move and install.
Why choose TESTEX Knitted Fabric Stretch Recovery Tester TF155
Strictly meet standards:
All data for the knitted fabric stretch recovery testing machine meet the standard parameters.
Consistency with international third-party laboratories:
The test data are comparable to the test results obtained by well-known international third-party laboratories.
High reproducibility:
Whether is the same set of samples, or different machines of the same model, after multiple tests, the results are consistent.
Longer service life:
TESTEX makes prototypes and then subjects them to rigorous reliability testing in a variety of environments to ensure achieve the expected service life.
User-friendly transparent warranty policy:
Textile testing machines, 14 months free warranty (12 months normal warranty time + 2 months shipping time). Besides, all spare parts, have 3 months free warranty.
We provide full life-cycle support for Knitted Fabric Stretch Recovery Tester TF155. So feel free to contact our service team with any questions you may have.
Welcome to TESTEX – a professional textile testing instrument supplier – Knitted Fabric Stretch Recovery Tester TF155 is on sale, contact us to get a detailed price quote.
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Stretch Recoverability of Fabric
Fabric stretch recovery is calculated as the percentage of the fabric growth recovered with respect to the fabric growth determined after tension or after a specified extension obtained at the various intervals. Fabric with good tensile or elastic properties will shrink itself after spreading and will be difficult to deal with in cutting, sewing, ironing, and other operations. Because of the product drawing, the size changed and the stitching part of the corrugated shape, if the stitching direction of the tension is too large, the sewing is easy to break or shrink the thread. Therefore, when operating for the above-mentioned fabric, we should choose the suitable elastic sutures for tensile properties.
Knitted fabric stretch recovery tester, used to determine the tensile properties of the fabric in a certain tension and tensile range.
Sample Preparation
Cut five samples along the length direction and width direction, which size is (125±3)mm*(500±10)mm. Ensure the specimens are free of folds, creases, or wrinkles. Avoid getting oil, water, grease, etc. on the specimens when handling.
The specimen is semi-folded into a ring, suture from the edge of the sample at 6~13mm which parallel to the short edge. Place the sample on the plane and set a mark A at the center of one side of the annular specimen. Humidification the sample according to ASTM D 1776 standard.
Test Procedure
1 Slide the specimen loop over the upper hanger rod and secure the rod in the hanger. Slide the folded end of the loop over the lower hanger rod and secure the rod to the hanger.
2 Place the upper hanger in the slot in the top bar of the supporting frame. Insert the dowel pin into the upper step marking the center on the fabric surface and connect to the sample ring.
3 Attach the chain by means of the turnbuckle to the lower hanger and extend the specimen loop to the amount specified, that is, such that the lower benchmarks line up with the specified percentage stretch point on the scale.
4 Lock the chain in the corresponding notch in the lower cross member of the frame. Adjust the turnbuckle to make minor adjustments to the position of the lower benchmark.
5 Waiting for a period of time as required, unlock and release the chain and remove the lower hanger from the specimen loop.
6 Measure the position of the lower benchmark relative to the scale on the rule to the nearest 1% or 1mm of the original gauge length.
Report Content
Sampling specifications and sampling methods. The original size between the marking points.
After 60 seconds of recovery, each fabric elongation and average elongation of the fabric. After 2 hours of recovery, each fabric elongation and the average elongation of the fabric.
Percentage of fabric elongation. The tension at which the fabric is stretched.
As a professional supplier of textile instruments, we are committed to continually improve the user experience, TESTEX Textile Testing Equipment is a reliable choice for testing textile quality.
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