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Monday, July 13, 2020 | History

2 edition of influence of yarn properties on the size sensitivity of pantyhose found in the catalog.

influence of yarn properties on the size sensitivity of pantyhose

Wim Schoenmaker

influence of yarn properties on the size sensitivity of pantyhose

by Wim Schoenmaker

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Published by Leicester Polytechnic in Leicester .
Written in English


Edition Notes

Thesis (Ph.D.) - Leicester Polytechnic, Leicester 1975.

StatementWim Schoenmaker.
ContributionsLeicester Polytechnic. School of Textile and Knitwear Technology.
ID Numbers
Open LibraryOL17894863M

Nylon and polyamide fibers have been a boon to knitting and crocheting since it was introduced in When nylon or polyamides are added to natural fibers it improves strength and durability of the yarn which is why so many sock yarns contain nylon or polyamide today. Nylon is also a great ingredient in many novelty yarns where strength, elasticity and shimmer are wanted. The effect of different yarn and fabric parameters on the tearing strength of fabrics having plain, 2/2 twill, 3/1 twilland 4­ thread satin weaves and woven using 52' .

crimp, length, and surface properties are the most important ones. Yarn structure yarn governs properties for the yarns produced from a fiber with a given set of fiber properties. Fabric structure includes type of yarn, twist level, unevenness, and hairiness of yarns, as well as yarn linear density, yarn sett, weave pattern, and crimp levels. attempted to relate yarn strength to fibre properties and yarn twist [7]. He introduced a composite factor (a product of the coefficient of friction, length and surface area of fibre) in determining the tension developed in a twisted yarn. He also derived an expression for the maximum strength at optimum twist.

  sizing of Synthetic yarn 1. SIZING OF SYNTHETIC YARN 2. Sizing: The process of apling proctive adhesive coating the tarn surface is called Sizing. In the weaving of yarns into fabrics, most yarns lack the strength and abrasion resistance necessary to weave efficiently under typical weaving conditions. Elasticity of the yarn is also increased. By adding size materials, yarn weight is increased. To increase the frictional resistance. Projected fibers are removed by this process. To reduce electrostatic formation. Properties of sized yarn: Generally size ingredients are used for warp yarn but sometimes it applies on weft yarn. Anyhow, by.


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Influence of yarn properties on the size sensitivity of pantyhose by Wim Schoenmaker Download PDF EPUB FB2

The sensitivity analysis plot Fig. 6 shows that the variable which had the greatest significant positive influence on the number of thick places was yarn twist (rank = +) which suggest that as the twist imparted on the yarn increase the appearance of thick places would increase, this probably because at high twist the areas along the yarn.

The measured temperature sensitivity of microfiber grating ( pm/°C) was approximately two times larger than that of the nontapered polymer grating (88 pm/°C), which is mainly due to the reduced size of the fiber.

The strain sensitivity of the microfiber grating ( pm/με) and the original polymer FBG ( pm/με) is approximately in.

Fabric with pore size gradient. US Patent () describes weft double-knit fabric formed from two different polyester yarns. A micro fibre ( to denier fibres) and a non-micro fibre (two denier fibres) yarn are knitted into an irregular pique knit which is a modification of the basic pique stitch.

Woven fabrics are subjected to a combination of in-plane extension/tension, shear, compression, bending in a perpendicular plane and out-of-plane buckling deformations. 10 The tensile properties of woven fabrics depend on the yarn and the fabric structure, that is the yarn twist, yarn strength, weave, crimp and cover.

The degree of yarn twist Cited by: 4. INFLUENCE OF POLYESTER FIBRE SHAPE & SIZE ON YARN PROPERTIES 27 Table 3—Effect of polyester fibre fineness and cross-sectional shapes on tensile modulus, bending rigidity and hairiness of the yarns made of % polyester Yarn ref.

Fibre mix Tex twist factor tex1/2 × turns/cm Tensile modulus cN/tex Modulus ratio Average number of fibresCited by: 1. The data also show that, in those instances where a property is texturing-temperature-dependent for more than one feeder yarn, the magnitude of the dependence (i.e., the slope of the property versus texturing temperature curve) is similar for all feeder yarns affected.

Therefore, these feeder yarns tend to have equal sensitivity to changes in. The study has used modified cellulosic yarn Cotton, Tencel, Excel and Modal spun yarns were used as raw material. The weft yarn are used of Tencel, Excel and Modal for all spun yarns was same i.e.

40 S Ne ( Tex) in the weft and cotton 60 S Ne ( Tex) in the warp were chosen for the construction shown in table no. Table 1: Yarn. Anish M. Varghese, Vikas Mittal, in Biodegradable and Biocompatible Polymer Composites, Functionalized hemp fiber–reinforced polymer composites. Hemp fiber is one of the dominant classes of bast natural fibers, commonly procured from the hemp plant with the species of common features of natural fibers along with inherent mechanical, thermal, and acoustic properties of.

Relationship between Yarn Properties and Process Parameters in False-Twist Textured Yarn Article (PDF Available) in Journal of engineered fibers and fabrics 4(2) June with 2, Reads. Yarn properties affecting comfort of the fabric. Yarn properties affecting comfort of the fabric Yarn size: The most common yarns are based on the length of the fibers within them and the appearance and alignment of the fibers, These fibers are either short, long.

Spun yarn: made by twisting or bonding staple fibres together to make a. The quality of hosiery yarn has to be considered with due weight-age to the fluidity of knitted structures and their influence on knit fabrics quality. The crucial yarn properties to be thought-about would be twisted in yarn for shortest doable gauge length, among variation of friction in yarn, yarn irregularity, torsional rigidity and flexural.

TYPES OF YARNS & APPLICATION& PROPERTIES 1. TYPES OF YARNS PROPERTIES END APPLICATION NATIONAL INSITUTE OF FASHIION TECHONOLOGY (CHENNAI) Tina dhingra MFTECH 2. JUTE • 2ply • S Twist • Jute is also called "the golden fiber" for. G.K. Tyagi, in Advances in Yarn Spinning Technology, Tensile properties.

Breaking strength and elongation are two prime quality attributes of any spun yarn. The strength and elongation of a yarn are important to the processability of the yarn in the downstream processing and operational life of the substrate made with the yarn.

An attempt has been made to establish a relationship between morphology and properties of these yarns. High tenacity (HT) polyester yarn has the highest birefringence, amorphous orientation, and long period but is relatively less crystalline.

High shrinkage characteristic of HT polyester yarn can be accounted for its higher amorphous orientation. Yarn properties evaluation with normal & pin type spacer Thick +50% Neps +% Total IPI Thin % Thick +35% Neps +% Sensitive IPI Series1 Series2 ties Yarn properties evaluation with normal &.

Effect-yarn draw ratio. Draw ratio affects the physical properties of effect-yarn, such as count, tenacity, elongation and flexibility etc. Generally, the effect-yarn draw ratio is maintained at a lower level than the core-yarn, so that one can later reduce the loop size by heat setting of the textured yarn.

Yarn size can get complicated Measurements and terms can vary by country. I’ll just give you enough information to get started. I’ll explain things using US measurements.

I know metric measurements are much easier to calculate, but since I live in the US, I’ll do it the hard way. Let’s get started. The size refer. The quality of hosiery yarn has to be considered with due weight-age to fluidity of knitted structures and their influence on knit fabrics quality. You may follow 1.

List of Top 10 Textile Companies in World 2. 15 Key Difference Between Knit and Woven Fabric. Fig: Yarn: The crucial yarn properties to be considered would be twist in yarn for. The values have been measured before conditioning, just conditioning (after keeping sample for 24 hours and 48 hours in a laboratory where ambient conditions), the physical properties of yarn are.

Book Bulk: Book bulk is defined as the overall thickness in mm of a given number of paper sheets. The bulking number is defined as number of sheets required to bulk 25 mm or approximately 1". The standard procedure of measuring book bulk is laid out in TAPPI T.

It kind of depends on what type of sensitivity you're talking about. I work in a yarn store, and we get lots of customers who think they're "allergic" to wool because they find it itchy.

I ask them if they get a rash. If not, if it's just red s.The purpose of this study was to examine the effect of spinning technologies and weave design on fabric mechanical and surface properties.

For this purpose, ring spun (combed, carded) and open-end.2. Yarn Fibres: The different properties of various yarn fibres including details of what these fibres are like to knit with as well as the properties of the knitted fabric.

3. Yarn Substitution: Helpful hints on substituting yarns when you are following a pattern but don’t want to use the recommended yarn.

1. Yarn .