The Corona Treatment of Cotton

1977 ◽  
Vol 47 (3) ◽  
pp. 199-202 ◽  
Author(s):  
G. M. Abbott ◽  
G. A. Robinson
Keyword(s):  
Yarn Strength ◽  
Untreated Cotton ◽  
Fabric Hand ◽  
Before And After ◽  
Fabric Strength ◽  
Card Sliver ◽  
Corona Treatment

The effect of various corona treatments of cotton card sliver on yarn and fabric properties and on spinning performance has been investigated. The corona increased yarn strength, especially at low twist levels and for coarse counts, without adversely affecting yarn evenness. At a given twist the corona treatment gave less end-breaks than untreated cotton. It also increased fabric strength but harshened fabric hand, both before and after wet finishing.

The Corona Treatment of Cotton

1977 ◽  
Vol 47 (2) ◽  
pp. 141-144 ◽  
Author(s):  
G. M. Abbott
Keyword(s):  
Moisture Content ◽  
Corona Discharge ◽  
Number Of Passes ◽  
Different Gases ◽  
Card Sliver ◽  
Corona Treatment

The cohesion or drafting force of cotton card sliver was enhanced by corona-discharge treatments. The level of treatment increased with the power in the corona, the number of corona zones, the number of passes through the corona apparatus, and the temperature of the cotton, but decreased with the moisture content of the cotton. Four different gases used in the corona reactor produced the same increase in sliver cohesion.

scholarly journals Development of Models to Predict Tensile Strength of Cotton Woven Fabrics

2011 ◽  
Vol 6 (4) ◽  
pp. 155892501100600 ◽  
Author(s):  
Zulfiqar Ali Malik ◽  
Mumtaz Hasan Malik ◽  
Tanveer Hussain ◽  
Farooq Ahmed Arain
Keyword(s):  
Tensile Strength ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Weft Yarn ◽  
Linear Regression Models ◽  
Warp Yarn ◽  
Yarn Strength ◽  
Fabric Density ◽  
Cotton Yarns ◽  
Fabric Strength

Tensile strength has been accepted as one of the most important performance attributes of woven textiles. In this work, multiple linear regression models are developed by using empirical data for the prediction of woven fabric tensile strength manufactured from cotton yarns. Tensile strength of warp & weft yarns, warp & weft fabric density, and weave design were used as input parameters to determine warp- and weft-way tensile strength of the woven fabrics. The developed models are able to predict the fabric strength with very good accuracy. Warp yarn strength and ends per 25 mm are found to be the most dominant factors influencing fabric strength in warp direction while weft yarn strength and picks per 25 mm are most vital in weft direction.

Study on Dyeing of the Plasma Modification Silk Fabric in Supercritical Carbon Dioxide

2011 ◽  
Vol 175-176 ◽  
pp. 661-666 ◽  
Author(s):  
Jun Yan ◽  
Lai Jiu Zheng
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Ph Value ◽  
Orthogonal Experiment ◽  
Plasma Modification ◽  
Silk Fabric ◽  
Dyeing Process ◽  
Before And After ◽  
Fabric Strength ◽  
Supercritical Carbon

A study has been conducted into the dyeing of silk fabric in supercritical carbon dioxide. In order to reach better dyeing effect, plasma modifying is used to silk. Plasma modifying can decompose disulfide bond of the protein fiber, change the state of scale layer and break silk gum of fiber so that dyestuff could infiltrate. Factors of plasma modifying are fixed, including pH value, processing time. And they affect the values of fabric colour feature and fabric strength. In this work, C.I. Disperse Blue-77 and C.I. Disperse Yellow E-3G are used by combining orthogonal experiment and single factor analysis. During dyeing process, temperature and pressure have a great impact on the result. Modification process and dyeing process are optimized, and the best process is determined. The results presented in this study show dyestuff can infiltrate through modified fabric easily. Through the testing, the washing fastness and rubbing fastness of silk fabric after being modified are improved. The changes between before and after dyeing are analyzed by scanning electron microscope and infrared spectrometer. It is showed that modified fabric obtains a better effect.

scholarly journals Influence of Hydroxyethyl Cellulose Treatment on the Mechanical Properties of Jute Fibres, Yarns, and Composites

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Ranajit K. Nag ◽  
Andrew C. Long ◽  
Michael J. Clifford
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Room Temperature ◽  
Failure Load ◽  
Tap Water ◽  
Tensile Modulus ◽  
Hydroxyethyl Cellulose ◽  
Yarn Strength ◽  
Before And After ◽  
Increased Strength

Jute yarns were treated by tap water with and without tension at room temperature for 20 minutes and then dried. Fibre and yarn strength were measured before and after treatment. Unidirectional (UD) composites were made by both treated and untreated yarns with and without applying hydroxyethyl cellulose (HEC) as size material. Water-treated jute yarns without tension and composites made of those yarns showed decreased strength, and water treated jute yarns with tension and composites made of those yarns showed increased strength with respect to raw yarns and composites made of raw yarns. However, no specific trend was noticed for fibre tensile strength and tensile modulus. HEC sized yarns showed up to 12% higher failure load with respect to unsized yarns, and composites made of HEC sized yarns showed up to 17% and 12% increase in tensile strength and tensile modulus, respectively, compared to composites made of similar types of unsized yarns.

Incremental Frictional Abrasion

1977 ◽  
Vol 47 (5) ◽  
pp. 332-340 ◽  
Author(s):  
Carol L. Warfield ◽  
Dorothy K. Elias ◽  
Ruth L. Galbraith
Keyword(s):  
Cross Sections ◽  
Yarn Strength ◽  
Performance Factors ◽  
Durable Press ◽  
Strength Behavior ◽  
Fabric Strength ◽  
Low Levels ◽  
Abrasion Damage ◽  
Small Increments ◽  
Thread Count

Fabric and yarn damage caused by small increments of frictional abrasion in an Accelerotor were evaluated for three pairs of matched fabrics. Variables investigated were fiber content, blend level, weave, finish, and amount of abrasion. Quantitative measures of changes in yam and fabric properties were evaluated. Photomicrographs of fabric surfaces, yarns removed from fabrics, and of fabric cross sections were also evaluated. Fabrics with crease-resistant finishes tended to rank higher in appearance characteristics, while those with the pure finishes tended to rank higher in performance factors related to strength. Crease-resistant finishes did not necessarily accelerate abrasion damage. Evaluation of abrasion damage generally showed a relationship between increased yarn crimp and increased thread count, between loss in yarn tex and loss in yarn strength, and between loss in fabric strength and loss in yarn strength. A double rupture was observed in the breaking-strength behavior of the durable-press polyester/cotton fabrics after low levels of abrasion. This double rupture disappeared after higher abrasion levels.

Effects of Mechanical Cleaning on Cotton Fibers: Part III: Effects of Card Wire Condition on White Specks

1997 ◽  
Vol 67 (12) ◽  
pp. 857-865 ◽  
Author(s):  
Patricia Bel-Berger ◽  
Terri Von Hoven
Keyword(s):  
Image Analysis ◽  
Sample Size ◽  
Cotton Fibers ◽  
Yarn Strength ◽  
Fiber Properties ◽  
Fabric Strength ◽  
The Impact ◽  
Larger Sample ◽  
Different Levels ◽  
Mechanical Cleaning

Combinations of gin and mill cleaning sequences have been studied to determine the best way to clean both smooth-leaf and hairy-leaf cottons. The two varieties were subjected to four different levels of lint cleaning at the gin, followed by nine different mill cleaning sequences, for a total of thirty-six samples. All samples were tested for fiber properties (Part II), yarn strength, and fabric strength and appearance. The yarn and fabric properties are reported in this paper. In the middle of the study, the card wire was damaged and subsequently replaced, which presented the opportunity to determine the impact of the card wire's condition on white specks. In addition, image analysis of the fabric samples by Optimas detected the percent white, the percentage of the area of white specks in a specified area of fabric. Because of the variability of white specks, a larger sample size was needed than was available for the mill samples, so only trends can be reported for the mill samples. In general, the more aggressive the cleaning, the higher the percent white. When comparing the effect of ginning, each additional lint cleaner produced an increase in percent white for the worn card wire. The new card wire decreased the percent white overall as compared to the worn card wire. The new card wire samples with three lint cleanings had a significantly higher white speck level than zero, one, or two lint cleaners. Similarly, the harsher the mill cleaning, the higher the percent white. The hairy-leaf variety produced percent white values similar to those for the smooth-leaf cotton for both the old and new card wires. Thus, when confronted with the possibility of a white speck problem, minimal gin cleaning and less aggressive mill cleaning are recommended.

Synthesis and Application of a Novel Modified Polysiloxane Polymer with High Reaction Activity as Water Repellent Agent for Cotton Fabrics

2015 ◽  
Vol 10 (2) ◽  
pp. 155892501501000
Author(s):  
Chaohong Dong ◽  
Zhou Lu ◽  
Ping Zhu ◽  
Lei Wang ◽  
Fengjun Zhang
Keyword(s):  
Cotton Fabric ◽  
Water Vapor Permeability ◽  
Water Repellency ◽  
Catalytic Amount ◽  
Cotton Fabrics ◽  
Water Repellent ◽  
Vapor Permeability ◽  
Untreated Cotton ◽  
High Reaction ◽  
Before And After

A novel poly(4-iodobutoxylmethylsiloxane) (PIBMS) water repellent with high reaction activity was synthesized using poly(hydromethylsiloxane) (PHMS), methyl iodide (MeI) and tetrahydrofuran (THF) in the presence of a catalytic amount of PdCl2. The new chemical active group of PIBMS could covalently bond to the cotton fabric. It is conducive to improve the washability of treated cotton fabric. The structure of PIBMS was confirmed by the FT-IR and 1H NMR spectra. The PIBMS was applied onto cotton fabric by a pad-dry-cure process. PIBMS was applied to cotton fabrics and the effect of the process parameters on water repellent performance was studied. The morphology of PIBMS polymer film on the cotton fabric was investigated by SEM. The water repellency of treated cotton fabrics before and after vigorous washes was compared. The results show that the water repellent grade of cotton fabric treated with PIBMS was 90. The contact angle of the treated cotton fabric was 136.94°, which was higher than that of the untreated cotton fabric. The water repellent grade of treated cotton fabric was still as high as 80 after 20 times washing. The tear strength and the tensile strength of cotton fabric significantly increased after PIBMS treatment. The air permeability and the water vapor permeability of treated cotton fabric were slightly lower than those of untreated cotton fabrics.

Study on Property of Carbon/Glass Braided Fabric Reinforced Composite

2011 ◽  
Vol 339 ◽  
pp. 426-430
Author(s):  
Mei Du ◽  
Lei Zhao ◽  
Li Bin Lv ◽  
Zhao Yu Wang ◽  
Yong Xun
Keyword(s):  
Tensile Strength ◽  
Tensile Property ◽  
Utilization Rate ◽  
Yarn Strength ◽  
Reinforced Composite ◽  
Before And After ◽  
Woven Structure

The choose of fabric woven structure, tensile property of fabric before and after dipping and the adhesion between fabric and concrete sheet were studied. It was concluded as followings. The utilization rate of the yarn strength in composite was increased by using braided fabric. The tensile strength of fabric and the adhesion between fabric and concrete sheet was obviously increased after dipping.

scholarly journals Analysis of the Strength Parameters of Worsted and Component Spun Yarns after the Rewinding Process

2018 ◽  
Vol 26 (2(128)) ◽  
pp. 32-37
Author(s):  
Jacek Rutkowski
Keyword(s):  
Cross Section ◽  
Joint Strength ◽  
Lower Number ◽  
Computer Memory ◽  
Strength Parameters ◽  
Control Operation ◽  
Yarn Strength ◽  
Before And After ◽  
Spun Yarns ◽  
Spinning Mill

The notion of yarn is understood as a continuous textile product of theoretically endless length and circle-like cross-section, made of staple or continuous fibres. A yarn leaves the spinning mill in a raw state and is used to produce some fabrics, but mostly it is subjected to the process of finishing. The yarn undergoes preparatory processes, such as winding, doubling, twisting, paraffin treatment, singeing and dyeing, depending of the final fabric type. Yarns are rewound on winding frames, and computers control operation of the rewinding frames and systematically monitor the yarn parameters. An electronic cleaner removes yarn defects, whose size has been saved in the computer memory. The purification of yarn improves its quality, resulting in a decrease in the number of breaks in further technological processes. A lower number of yarn breaks contribute to an increase in machine efficiency (weaving and knitting machines). The experimental section of the study is divided into two parts. The first includes tests of yarn strength parameters before and after the rewinding process. It was established in the process of cleaning that the yarn during rewinding affects the strength of wool and blended yarns. In the second part, the strength parameters of yarn doubling points after the rewinding process for various variants of the splicer setting were tested. The blowing time in the doubling chamber was changed and the importance of using the thermosplicer for the yarn joint strength was established.

Spin Finishes for Cotton

1988 ◽  
Vol 58 (3) ◽  
pp. 173-179 ◽  
Author(s):  
Henry H. Perkins
Keyword(s):  
Mississippi Delta ◽  
Processing Waste ◽  
Textile Processing ◽  
Adverse Conditions ◽  
Yarn Strength ◽  
Fiber Properties ◽  
Dust Generation ◽  
Before And After ◽  
History Of ◽  
Surfactant Additive

Cotton has an exceptional natural finish, but under adverse conditions of weathering, this finish may deteriorate to the extent that processing quality is altered. Changing technologies involving higher processing speeds and new spinning systems have placed increased demands on the fiber properties of all cottons. Spin finishes could reasonably improve the processing qualities of both damaged cottons and cottons in general. The history of effective finish usage (additives) in both ginning and textile processing of cotton has been reviewed. Cottons harvested both before and after significant weathering in the Mississippi Delta, with and without added finishes, were evaluated for spinning quality. The cottons harvested before and after weathering had similar traditional fiber properties of length, strength, and micronaire, but the weathered cottons were poorer in grade, color, and trash. The processing performance of the unweathered cottons was superior to that of the weathered cottons. A hydrocarbon plus surfactant additive improved the processing performance of the weathered cottons in relation to processing waste and dust generation, but did not improve spinning end breakage or yarn strength.

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