TECHNOLOGY OF TEXTILE JOURNAL
Year:2012 | Volume:7 | Issue:1|Papers Count:10

In this study the affected factors on loyalty in carpet finishing that its dimensions are price, mentality, trust, quality of service and the quickness of service has been studied as independent variable and customer loyalty as dependent variable of research.And more has been paid to determine the meaning full relationship between these variables. Type of research conducted is correlation and is field research. Community survey is Kashan carpet companies and is 82 samples. Research Measuring Tools is questionnaire. Research has been studied through the Pearson and Spearman test between variables and through Freedman test the priority of factors has been determined .The results show that all of the mentioned factors affected on loyalty meaningfully. Also the quality of service is the most effective and mentality is the less effective on loyalty and satisfaction of customers.

The purpose of this research ،is identify and prioritize waste (muda) in poushesh, Iran, Spinning and Weaving Co, and seek appropriate solutions to productivity improvement through the reducing waste.ten waste, as hypotheses were tested (manpower waste, Waiting time, Unnecessary movement, Over processing, Over production, Excess inventory & storage, Organizational problem, process & Environmental waste, Defects & reworks, Unnecessary transport) The results of the study indicated that there are four types of wastes in the organization that The order of priority are: Waiting time, Defects & reworks, manpower waste, Organizational problem.

A experimental analysis of effects of dry heat (under low pressure) and test speed on load-extension behavior of cotton plain wave fabric is presented. For this reason we preparations samples under this conditions: the samples heated in two states continuous and periodic then tested under uniaxial tensile deformation with various test speed (300 and 450 mm/Min). The results showed in both test speed the strength increase when dry heat apply periodic. Also the dry heat cause reduces the elongation at break of fabric and in heated fabric the elongation at break is greater than unheated fabric.

It is well known that weft knitted fabrics tend to undergo large changes in dimensions and are often prone to distortion upon repeated laundering. A large number of factors are responsible for causing these undesirable effects in knitted structures; these are all associated with the yarn, knitting, finishing and making-up of the fabrics. It is also a fact that consumers are becoming increasingly concerned and aware of fabric quality and expect higher standards of performance than ever before, even after a number of wash and dry cycles. Therefore, raw fabrics (rib 1×1 100% cotton) produced from the scouring, cooking and bleaching, dyeing, stretch, shrink and spread process through all the stages of testing and measuring the density of longitudinal, width and surface fabric (CPC, WPC, SD). Overall the results and their analysis revealed dimensional changes and the percentage of shrinkage depends on the length and width fabrics change the machine settings (speed, tension and over feed). The wet Finishing process of various stages (scouring, cooking and bleaching), maximum effect stead on the dimensional changes of weft knitting fabrics and at the end of this process, fabric is better dimensional stability. Speed and tension variations of their influence on width shrinkage, but in later stages of supplementary (dry), stretch, shrink and eventually spreads, good dimensional changes of the previous steps, because the consumer's request kg/m fixed, their lost and ultimately undesirable dimensional changes of fabric reaches the final consumer.

Gelatin as a natural and biocompatible polymer has been considered in tissue engineering for medical applications. However Gelatin is dissolved in water, its electrospinning from aqueous gelatin solutions would be impossible. Since gelatin is dissolved in formic acid, in this research formic acid and water have used as solvent. Gelatin nanofibers have been electrospun from solutions with different gelatin concentration and various water-acid ratios in suitable voltage. Nanofiber morphology and chemical structure variations were investigated by scanning electron microscopy and FTIR, respectively. The electrospinning results showed that the nanofiber can be produced from the solution with water ratio lower than 95%. SEM pictures display the nanofibers diameter changes between 82 to 277 nm depends on electrospinning solution. The number of beads is decreased by increasing gelatin concentration, acid ratio and voltage. Also the nanofiber diameter is increased by increasing gelatin concentration and acid ratio in electrospinning solutions. The FTIR results explain gelatin nanofibers have got more order structure as compared to gelatin powder, and there is not any structure difference in nanofibers produced from solutions with different amount of acid.

In this research with poly carboxylic acid BTCA with SHP catalyst and Nano Tio2 by pad-dry method, wrinkle recovery behavior and toursional force (wrinkle force), for cotton/polyster blended fabric (35.65) were studied. The method was testing in fluence of BTCA and Nano tio2 alone and in compound from and systematic studied on samples. Samples that done by electronic microscope (SEM) and also wrinkle recovery tester and wrinkle force tester were evaluated and compared. Results showed that applying Tio2 and poly carboxylic acid at the same time will increase the performance of durable press finish on cotton/polyster blended fabrics in compare with each of them individually.

The applications of some Nanocomposite are developed extensively in textile industry nowadays. Nanocomposite of chitosan/ nano silver are one of the nanocomposite applied for wrinkling –antibacterials properties on textiles. In this study, it was aimed to investigate the effects of chitosan/nano silver nanocomposite on crease behavior of cotton fabric especially cross linked cotton fabrics & effect Antibacterial of E. coli and S. aureus & properties Stretching strength with Polycarboxylic acids. Samples were treated with nano composite of chitosan/nano silver and citric acid separately or concurrently by Impregnation & cur method. Samples were characterized by colonies antibacterial and wrinkle recovery tester. Results showed that applying chitosan/nano silver and a Polycarboxylic acid at the same time will increase the performance of durable press finish & anti-bacterial on cotton fabrics in compare with each of them individually. But the ability of Stretching Strength to rupture decreased by increasing curing temperature for each of the materials.

In this study, the curling behavior of single jersey weft‐knitted fabrics produced from different structures such as cross-miss, double cross-miss, triple cross-miss, cross-tuck, double cross-tuck and triple cross-tuck with two different yarn twist directions is investigated. Curling behavior is characterized in terms of curling surface in both course and wale direction. In this investigation it is indicated that the curling of weft‐knitted fabric samples produced from the Z‐twist ring-spun yarn is higher than that of the samples produced from the S‐twist cotton ring‐spun yarn. The comparison between different fabric structures revealed that the presence on tuck loops in fabrics results in fabric curling decreases. During the tuck loop formation, the higher yarn tension on the held loop causes them to rob yarn from adjacent knitted loops. This in turn causes more moment though the loop and the higher curling would be expected. But the results showed that the friction between the yarns in contact points has a significant effect on the curling reduction. It has been figured out that the structures comprised of tuck and knit loops present lower curling phenomenon. In this study, double cross tuck and triple cross miss structures showed the lower and higher curling. Totally it could be stated that the structures possess miss loops have the lower curling surface in the wale direction while it is the opposite in the course direction. For structures including tuck loops, the results are quite in contrary.

The applications of anti-bacterial agents are developed extensively in textile industry. Antibacterial of PHMB (Polyhexamethylene Biguanide Hydrochloride) are one of the agents applied for implying anti-bacterial properties on textiles. In this study, PHMB was used to create antibacterial properties on woolen fabric. Uuntreated and treated with protease enzyme wool fabric were loaded with PHMB by exhaustion method. Samples were characterized by scanning electron microscopy SEM. Loading efficiency and the amount of PHMB on fabric is determined by spectroscopic method. Antibacterial properties of wool fabric loaded PHMB are investigated against a Gram-negative bacteria (Escherichia coli) and Gram-positive bacteria (Staphylococcus aurous). This research was conducted with the objective of preparing an antimicrobial woolen fabric using the PHMB polymer; in this case we can to be effective to create antimicrobial properties on woolen fabric in the textile industry. Results of anti-bacterial indicated that the fabrics loaded with PHMB have antibacterial properties against both Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus).

Research on photocatalytic degradation rate of azo dyes using nano strontium titanate in photocatalysis process was the main goal of present study. In this regard, the influence of the main operating parameters such a photo-catalyst concentration, dye concentration, temperature, pH and auxiliary hydrogen peroxide upon dye removal rate under UV irradiation were studied. Dye absorption measured by a UV-Vis spectrophotometer. The structure and morphology of nano powder were investigated using scanning electron microscopy and crystallinity by X-ray diffraction spectroscopy. The results reveal that nano strontium titanate has high and significant photocatalytic activity and in comparison with nano-titanium dioxide was superior photo-catalyst.