1 - Manufacturer of Sewing Threads Textiles and Footwear
An important aspect is the knowledge of the linear density of the yarn manufacturer Sewing Threads Textiles and footwear , because it allows for a fellow wire Wire Manufacturer of Sewing and Textiles Footwear , choose what best suits the conditions of use of the article.
Indeed, the linear density of the yarn manufacturer of textile yarns and stitching footwear influence :
· Wire resistance Manufacturer of Sewing Threads Textiles and Footwear , and consequently the strength of the seam ;
· The choice of the number of needle ;
· Filling cinnamon ;
· The pitch of the sewing machine tensioners ;
· The risk of curl of the line.
Manufacturer of Sewing Threads Textiles and Footwear
The linear density can be expressed in several ways:
Manufacturer of Textile Yarns and Sewing Tex Footwear
Manufacturer of Sewing Threads Textiles and Footwear Ne
Manufacturer of Sewing Threads Textiles and Footwear Nm
Manufacturer of Sewing Threads Textiles and Footwear Denier
Tex and Ne are the most used in sewing
2 - Manufacturer of Sewing Threads Textiles and Footwear
The number of turns of wire around its axis , determined based on their nominal gauge length before the distortion.
The twist should be expressed preferentially in turns per meter (turns / m) can also be expressed in turns per cm (turns / cm) and (turns / inch).
The steering torque is very important. The twist may be in the clockwise direction , Z- twist , known as left twist , or in the opposite direction to the clockwise twist forming S, known as right twist . Manufacturer of Sewing Threads Textiles and Footwear
The Z- twist is more appropriate for larger paret sewing machines because with the twist S distorts the sewing thread during sewing thus causing distortion and breakage of the line textile yarn stitching footwear and
3- friction coefficient
It is sliding against the force of a wire in contact with a cylindrical body where there are opposing forces . One cause of needing to change the needle often is the great wear caused by friction of the yarn on the metal .
The heating of the needle and breaks frequently abnormal , are also consequences of friction. The friction properties of a wire depend on the characteristics , but above all the finishing products and lubricants. Lubrication of a wire is very important , because it reduces friction and protects the wire against heat . It is in these cases necessary to make a test of friction or slip on a metal wire , which permits to detect whether the wire will wear material, or affect the characteristics and service life of the organs of the machine.
A high lubricity can cause staining on parts , creating a huge problem because the removal is very expensive and in some cases impossible.
4 - Manufacturer of Sewing Threads Textiles and Footwear
The irregularity of the yarn , ie the variation in mass per unit length is considered to be an important and critical, as it may cause breakage of the seam line . Irregularities can be found at any stage of the textile process , ie, appear on wires , fuses , blankets and ribbons.
The length and diameter of the fiber are important properties for determining the behavior of these in the spinning process . There is a high correlation between the irregularity of the yarn and the average length of the fiber.
The variations in the cross section of the wire , as neps , thin places and thick places , are usually described as imperfections and are analyzed in parallel to the irregularity .
It is important to realize that all the wires are somewhat irregular , and its value is the determining factor for the acceptability or otherwise of the product by the consumer .
5 - Rupture Resistance Manufacturer of Sewing Threads Textiles and Footwear
Maximum force applied in a tensile test carried to rupture . To yarn is preferably expressed in centinewtons ( cN 1GF = 0.98 ) can also be expressed in kilograms or grams (force ) . This varies slightly according to the specific conditions under which the wire was broken , for example, humidity , temperature, charging rate and length of the wire subjected to tension. For this reason , all of these conditions are specified accurately in all internationally recognized tests . These tests are conducted in standardized laboratory environment with automated instruments and usually using electronic load cells .
6 - Tenacity Yarn Manufacturer of Sewing and Textiles Footwear
Ratio of tensile strength of the wire , relative to their linear density . It is usually expressed in centinewtons per tex ( cN / tex) .
Of course, to produce the thicker a wire , the more resistant it will be. But the tenacity is theoretically independent of the linear density of the yarn and can therefore be used to compare the resistance of fibers and wires. The tenacity can be expressed in various ways grams (force ) per denier (g / d ), and grams ( force ) tex .
7 - Elongation at break Manufacturer of Sewing Threads Textiles and Footwear
Increase in length of a specimen produced by the breaking force . It is expressed as a percentage of the original nominal length .
This is important , being one of the factors involving the enhancement of the elasticity of the seams . By itself is important because it identifies the behavior of the yarn stitching.
8 - Elasticity Manufacturer of Sewing Threads Textiles and Footwear
It is the property of a wire and Textile Yarns and Sewing Calçadopela which it tends to recover its original length after being stretched to a certain point . For example, the gum regains its original length , is therefore highly elastic , with a 100% elastic recovery .
A polymer unstretched , is said to have high plasticity with elastic recovery zero.
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