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Elmendorf Tear Tester TF140C

4.5 out of 5 based on 8 customer ratings
(8 customer reviews)

Elmendorf Tear tester, a computer controlled falling-pendulum instrument, to decide the ballistic tearing strength of textiles, plastics, paper or board. Tear Strength Tester complies with ASTM D1424/1922/5734, ISO 1974/9290/6383-2, BS ISO 13937, etc. The tearing tester is further enhanced and supported by the easy to use computer. Elmendorf Tear Strength Tester will show its good performance when you do Elmendorf tear test.

Application

Auto Elmendorf Tear Tester (patented product), is used to determine the ballistic tearing strength of textiles, plastics, paper or board.

Elmendorf tear tester (protear) enables rapid determination of the dynamic resistance of materials designed to be subject to strong shearing loads (e.g. fabrics) or liable to be damaged by sharp or heavy objects (e.g. paper bags). Subsequently, the test was naturally adopted for all materials in the form of sheet or films, cardboards, cloth, knitted fabrics, plastic films, aluminium foil, non-woven fabrics, complex flexible packaging etc.

Elmendorf type tear tester is not applied to sparse fabric or stretch materials which the tearing direction might be shift in test.

Compressed air of 0.4~ 0.7 mPa is required.

Features

  • Works in accordance with all known test standards.
  • The model is the only one that covers the most completed test range from 0 to 12800cN.
  • RS-232 data output, equipped with Lenovo computer and Tearing Test software, and Panasonic printer.
  • Machine can be controlled by the large graphic touch panel without computer and software.
  • Automatic specimen clamping and notching.
  • Repeatable, pneumatic specimen gripping system guarantees sufficient clamping pressure to avoid all slipping phenomena, thus ensuring perfect reproducibility of the experimental conditions.
  • Automatic compensation for friction and leveling errors, no slave pointer, therefore no friction, alignment and maintenance problems.

Specifications

  • Capacity: 0-12800 grams (0 ~ 128N)
  • Pendulum Range(cN): 0~ 1600, 0 ~ 3200, 0 ~ 6400, 0 ~ 12800
  • Accuracy: 0.2% of pendulum range
  • Unit: GF, MN, CN, CP, LB

Included Accessories

  • TESTEX Elmendorf Tearing Test software
  • Complete with work pendulums
    1600cN/g (3.5lb), 3200cN/g (7.0lb), 6400cN/g (14.0lb), 12800cN/g(28.0lb)
  • 2 pcs of Cutting blades
  • 1 pc of Specimen cutting template

Weight

105 kg

Power

220/110 V50/60 Hz0.5-0.7 Mpa

Dimensions

Width:560 mmDepth:420 mmHeight:530 mm
22 inch17 inch21 inch

Standards

ASTM D1424ASTM D1922ASTM 5734ISO 1974
ISO 6383-2ISO 9290BS ISO 13937BS 3424
BS 4253BS 4468DIN 53862DIN 53128
NEXT 17M&S P29INDA IST 100.1AFNOR G 07-149
GB/T 3917.1FZ/T 60006FZ/T 7500

 

What Factors to Pay Attention to when Determining the Tearing Strength?

1.The sample should be cut according to the size in the following chart.

ProjectTrapezoid MethodSingle Tongue MethodHammer Drop Method
Sample Length(mm)≥200 (approximately 150)≥20075 (approximately 63)
Sample Width(mm)50(After repairing the edge yarn)75100
Cut Length(mm)108020
Tear Length(mm)107513
Holding Distance(mm)10075<2
Stretching Rate(mm)200200(Hair Length 50)Hammer Drop

2. The test direction refers to the direction in which the yarn is torn, ie, the direction perpendicular to the incision, such as the warp yarns of the warp sample in the single tongue tear in the width direction, and the trapezoid method in the opposite direction.

3.The cut should be cut along the warp or weft direction, otherwise the tear may deviate from the cut during tearing.

4.When the specimen is clamped, the yarn at the incision can not be stressed.

5. Measurement observed in the observation of the tear of the specimen, such as the slit deviate from the incision extension line should be examined further. It should be removed and added to the results.

6.Drop the weight of the bezel in order to determine the pressure, full, not with the fan hem friction.

 

Elmendorf Tear Test – Pendulum Method

What is elmendorf tear definition? Elmendorf tear strength (or tear resistance) is a measure of how well a material can withstand the effects of tearing by pendulum method. Elmendorf tear tester manual and Elmendorf tear test units are most common used machines in this method.

The pendulum method (elmendorf test) is similar to the tongue tearing method and is in the family of fast tear strength test methods. The elmendorf tear test is commonly used. It can bet used for woven fabrics and also other fabrics that are produced with similar technology. However, this method can not be used for woven elastic fabrics, knitted fabrics, or any fabric that has the possibility of tearing transfer and has a great difference on weft and warp.

The Pendulum Method’s testing parameters have different national testing standards, as shown in Table 1 below.

Table 1 - Pendulum Method tear strength comparison of technical parameters

ProjectGB/T 3917.1-2009ISO 9290ASTM D1424
Test RangeSuitable for woven fabrics, but also for other technologiesSuitable for woven fabrics, but not for knitted fabrics and non-wovenSuitable for most woven fabrics, also suitable for warp knit fabrics
EquipmentPendulum fabric tearing strength tester (elmendorf tearing strength tester)
Distance of clamps /mm3±0.52.8±0.42.5±0.25
Surface Size of clamps /mm30×1537×1625×16
Sample Size/mmLength - 100±2 Width - 75±2 Diameter - 63Length -100±2 Width - 75±5Length - 100±2 Width - 75±2 Diameter - 63
Number of SamplesLength and width of at least 5 mm each (at least 5x5)
Cutting Length/mm20±0.520±0.1520±0.15
Tear Length/mm43±0.543±0.543±0.15
Environmental ConditionsWater Temperature /℃ (20±2)Relative Humidity / % (65±2)Water Temperature /℃ (20±2)Relative Humidity / % (65±2)Water Temperature /℃ (20±1)Relative Humidity / % (65±2)
Humidifying TimeAt least 4h

 

Current GB / T 3917.1-2009 steps (elmendorf tear test procedure) for detection methods are as follows:

  1. Sample Preparation

Two sets of specimens were cut at a distance of 150 mm from the edge of the cloth, one for the warp sample and the other for the weft sample. The short side of the specimen shall be parallel to warp or weft to ensure that the tear is made along the incision. At least five samples of each group, the sample size shown in Figure 1. Tear length remains (43 ± 0.5) mm.

 

Fig: Sample Size

Fig: Sample Size / mm

 

Be careful when sampling, the sample should be representative to ensure that the sample does not contain the same between the warp and weft. Take the longitudinal direction of the sample, the sample should be parallel to the short side of the weft, not cut off incision weft; weft to take the same principle of the sample. After the sample is cut, put into a constant temperature and humidity laboratory humidity conditioning treatment before testing.

  1. Instrument Preparation

Check the calibration equipment, choose the quality of the pendulum, so that the elmenforf tear  test results of the sample fell within the range of 15% ~ 85% of the corresponding scale; with the calibration instrument at zero, the pendulum should rise to the starting position, the pointer is also placed at the zero position.

  1. Clamping the Specimen

The sample is sandwiched between the clamps so that the long side of the sample is centered, the lower side abuts against the base of the clamp head, the upper side is parallel to the top of the clamp head, and the two clamps clamp the sample evenly. In the middle of the opposite side of the groove of the sample, cut a (20 ± 0.5) mm incision with a shearing device according to the rule, leaving a length of (43 ± 0.5) mm to be torn.

  1. Measurement Performance

Start the instrument and let go of the pendulum for tearing. Hold the pendulum when it is in the high position, so as not to damage the position of the pointer, read out the data indicated by the pointer. The test results fall within the range of 15% ~ 85% of the scale used. According to the observations in the longitudinal and latitudinal directions, the mean (N) tear strength of the samples in the warp and weft directions are each calculated.

When testing, care should be taken to see if the tear is in the direction of the force, and whether the yarn slips off the fabric instead of being torn. If the fabric does not slip from the jaws, tear has been in the 15mm wide groove area, the test is normal, otherwise the results need to be removed. This method does not apply if three or more of the five specimens are rejected.

 

The machines for tear strength are in hot sales now! Welcome to contact us for elmendorf tear tester price or more information.


Leave an inquiry for instruments, methods or any information.

We usually respond within 12 hours, or faster.

Q: Do you have elmendorf tear tester manual?

A: Yes, please contact our sales person.

 

Q: What is elmendorf tear definition?

A: Elmendorf Tear ASTM D1922. Propagation Tear Resistance of Plastic Film and Thin Sheeting by Pendulum Method (Elmendorf Tear) ASTM D1922. Scope: A pendulum impact tester is used to measure the force required to propagate an existing slit a fixed distance to the edge of the test sample.

 

Q: How are elmendorf tear test results?

A: You can refer to the Elmendorf Standard Test for the specified.

 

Q: How to use elmendorf tear tester?

A: There are some steps you can follow in the “Description”. What’s more, there is a detailed procedure of the usage of elemndorf tear tester in our product manual. We can offer the e-manual if you need. Please contact us via e-mail.

 

Q: Can you provide the Elmendorf tear test formula for me?

A: Actually, there are different formulas of different national testing standards, and you don’t need the formula because our product will calculate the results for you automatically.

8 reviews for Elmendorf Tear Tester TF140C

  1. 5 out of 5

    :

    bom vendedor produto chegou antes do prazo eu recomendo !!!

    • :

      Thank you for your support!!

  2. 5 out of 5

    :

    Everything was great!

  3. 5 out of 5

    :

    sir, i like your equipment because it is so frinedly use, but i need some guidance about Elmendrof tear tester TF140B. can you please do me a favor. i want to know how to calibrate this version of tear tester?? i hope you will guide me..

    • :

      Mr Arshad,our colleague will contact you by email as soon as possible.

  4. 3 out of 5

    :

    Everything is good, but some problems appear in communication. The manufacturer of elmendorf tearing tester still strive to solve for me.

    • :

      We feel so sorry for this. We’ll continue to struggle for providing best service for customers.

  5. 5 out of 5

    :

    The elmendorf tear test unit is excellent for its performance.

  6. 4 out of 5

    :

    Very useful machine! Recommend!!

  7. 4 out of 5

    :

    The operation of this tester is simple and convenient,pretty good!

  8. 5 out of 5

    :

    Very satisfied with this Elmendorf Tear Tester price and performance.

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