Table Tag: Uster tester

Yarn Test Results Tensorapid and Tensojet

Tensorapid and tensojet yarn testing parameters

Introduction

The tensorapid and tensojet are two of the most used instruments in textile testing labs today. They provide an excellent opportunity to measure breaking force, elongation, rkm and many other key indicators of quality. Here are some key points regarding these measurements: Breaking Force is a measure of the strength of a strand at its point of failure. Elongation is a measure of how much tension was applied to a strand before it breaks. RKM is calculated from the difference between the measured and theoretical breaking force divided by breaking force multiplied by 100%. This gives us an indication as to whether or not there is any slippage between strands within our sample that would cause skewing in our results

The tensojet and tensorapid are two of the most used instruments in textile testing labs today.

The tensorapid and tensojet are two of the most used instruments in textile testing labs today. These instruments measure warp, weft, and fill yarns, as well as fabrics on a loom. They also test for colorfastness, washability, shrinkage and other properties that affect your finished product.

These tools allow you to test yarns at any point during their production cycle from raw material through production phase to finished goods before they go into stores or onto consumers’ hands!

They provide an excellent opportunity to measure breaking force, elongation, rkm and many other key indicators of quality.

A tensorapid and tensojet yarn test provides an excellent opportunity to measure breaking force, elongation, rkm and many other key indicators of quality.

The tensorapid machine has a minimum diameter of 10mm and a maximum tension of 10N/cm2. The tensojet machine has a maximum tension between 200N/cm2 and 300N/cm2.

Here are some key points regarding these measurements.
  • Breaking force is the amount of force required to cause a strand to break at its point of failure. The breaking force is measured in pounds per inch (lbs/in).
  • Elongation is how much tension was applied to a strand before it broke. It can be expressed as a percentage or as an actual length measurement. The elongation measurement should be taken from 5% or higher on each side of the yarn after wrapping, so if you have multiple wraps on your test piece then it’s best to measure from halfway through each one separately rather than just measuring one wrap instead!
What is breaking force in yarn.
Breaking Force is a measure of the strength of a strand at its point of failure.

Breaking Force is a measure of the strength of a strand at its point of failure. It is calculated using the formula:

breaking force = (density x length) / 2.2

What is elongation in yarn.
Elongation is a measure of how much tension was applied to a strand before it breaks.

Elongation is a measure of how much tension was applied to a strand before it breaks. It’s measured in percentage and can be used as an indicator of the quality of the yarn.

Elongation is not only useful for determining if your strand has been over-stretched and will break within its lifespan, but also what type of yarn it is and how many times you need to test your new batch before sending it out into production.

What is RKM in yarn.
RKM is calculated from the difference between the measured and theoretical breaking force divided by breaking force multiplied by 100%. This gives us an indication as to whether or not there is any slippage between strands within our sample that would cause skewing in our results.
Classimate Yarn Testing Report

The report is broken down into three categories:

  • Sample Attributes – This section includes information about the yarn, including its length and diameter. It also lists any defects or damage detected during testing.
  • Yarn Testing Parameters – In this section, you can find out how much force was required to break a length of yarn (fiber diameter), as well as any other relevant information such as tensile strength and elongation at breakage points.
  • Visualization Tools – This area provides an overview of all results from your test run and allows users to analyze them in more detail by clicking on various features within each analysis category listed above.[
Conclusion

The above analysis shows that there is a significant difference between these two yarns with respect to their breaking force, elongation and RKM values. This could mean that one of them may not be as good as the other and therefore require different treatments before they are used in production processes.

Author: Afzaal Khadim Khan
Owner: Textiles Bar
Lahore Pakistan

For complete understanding of Uster results of yarn please Click Here

Complete description of yarn test results on Uster machine

Uster yarn testing parameters detail

Introduction

Uster yarn testing parameters are used to test the uniformity in yarn with the help of a highly complex testing machine that has the capability to determine the variation in yarn even less than one denier. It is important to note that Uster Quality Factor (UQF) is not a single number but an umbrella term for all those factors which affect uniformity and other imperfection parameters from raw material till finished product. It also includes skill of machine operators as well as other factors like temperature and humidity conditions etc., whose effect on uniformity cannot be ignored during testing process.

What is U% in Yarn:

Uster Quality Factor (%) is the test of the uniformity in yarn with the help of a highly complex testing machine that has the capability to determine the variation in yarn even less than one denier.

Uster Quality Factor (%) is the test of the uniformity in yarn with the help of a highly complex testing machine that has the capability to determine the variation in yarn even less than one denier. Uster Quality Factor is measured based on tensile strength and elongation of sample at break point.

Uster quality factor will be determined for each sample by taking its own weight, dividing it by its diameter and multiplying this number by 100%. The result will be divided by 1,000 (1% = 0.01).

What are Thin Places in Yarn:

The thin place is the proportion of thin places on yarn and it is expressed as a percentage.

In this section, we will discuss the thin place. The thin place is the proportion of thin places on yarn and it is expressed as a percentage.

The “thin” place refers to areas in which there are no defects but just interspersed knots or strings that do not form loops. A large percentage of these defects can be removed by one or two passes with a carded comb through these areas, however you may need more than this if there are many different types of defects present (such as broken threads).

What are Thick Place in Yarn:

The thick place is the proportion of thick places on yarn and it is expressed as a percentage.

The thick place is the proportion of thick places on yarn and it is expressed as a percentage.

The thickness of yarn can be measured in three ways:

  • Thickness at break (TBT) which is determined by breaking tweezers into two pieces and determining how many times they can be broken before they break. If a tweezer breaks more times than specified, then that means there are more than 3/8″ (1 cm) per meter.

Description or definition of Neps+200 in Yarn:
The number of neps+200 is the count of knots bigger than 200 micron which are present on every linear meter of yarn.

The neps+200 is the count of knots bigger than 200 micron which are present on every linear meter of yarn. It is expressed as a percentage, determined by Uster Tester 3 and Tester 5 machines.

Neps+200 value can be used to determine the quality of yarn in terms of its potential as a warp material for next production phase (sewing).

Description of Hairiness in Yarn:

Uster Hairiness Test Measures number of extra fibers sticking outside from yarn surface per meter length.

The hairiness test is a measure of the number of extra fibers sticking outside from yarn surface per meter length.

The hairiness test is done by applying pressure on the yarn sample and measuring how much it swells up under this pressure.

The higher the number, the more likely that your yarn will be suitable for knitting or weaving with natural fiber materials such as wool, silk and cotton as well as synthetic ones such as nylon or polyester.

What is U CV% in Yarn (Complete Definition):

Short name for Uster CV% which stands for coefficient variation produced by Uster Tester 3 and Tester 5 machines. It is the overall measure for all those parameters which affect uniformity and other imperfection parameters.

The Uster CV% is the overall measure for all those parameters which affect uniformity and other imperfection parameters. It can be used to identify the quality of yarn. The CV% is calculated as follows:

  • CV% = U% + tp% + th% + neps+200 + sh% + cvm%.

Meaning of IPI in yarn. How to calculate or find IPI in yarn.

In Normal spun yarns IPI is the total of Thin(-50%)+Thick(+50%) and Neps(+200%)

Description of SH% in Yarn:
Short name for Shaft Holes, a defect produced by spinning machine due to rubbing between two components at high speed. It results in reduction in strength as well as leads to produce weak parts in yarn which can break anytime during post-spinning operations.

Shaft holes are caused by rubbing of the two components at high speed. It results in reduction in strength as well as leads to produce weak parts in yarn which can break anytime during post-spinning operations.

Definition and description of Yarn Strength:
Strength stands for how strong a material is i.e, its resistance against breaking or tearing apart under tension or pressure.

Strength is the measure of how strong a material is, i.e., its resistance against breaking or tearing apart under tension or pressure. It’s measured in grams per denier (g/d).

Strength is used to determine whether yarns are suitable for use in certain applications and materials. The tensile strength of a material determines how much force can be applied without causing it to break; thus, higher values indicate greater strength.

Complete Yarn Testing Report

The yarn testing report is a comprehensive document that contains all the information you need to understand your sample. It includes:

  • Information about the yarn type and brand of the yarn
  • Details of how to conduct test procedures, including which machine settings should be used and what tests should be conducted (such as tensile strength or washability)
  • Results from measuring all parameters associated with each of these tests, including tear index and smoothness index

Conclusion

Uster yarn testing parameters are important in assessing the quality of a yarn and it can be used to identify any defects present on the yarn.

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Author: Afzaal Khadim Khan
Owner: Textiles Bar
Lahore Pakistan