2013

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    Dissipation of energy in stacking layer of bullet proof vest
    (UMT Lahore, 2013) Ayesha Ghazanfar; Ayesa Azhar
    In This project we are discussing the dissipation of energy in stacking layers of bullet proof vest. We use the three fabrics (Kevlar, Nomex and Dyneema) for making the stacking of fiber then find the impact of the bullet on the stacking layer of fiber. For this purpose we find the momentum, and velocity of the bullet. We use the TexGen and ABAQUS software for modeling of fiber and the stress strain curve of the fiber
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    Study of blow room and card cleaning efficiencies for modern processing lines
    (UMT Lahore, 2013) Ahmad Nasir; Ghulam Yaseen; Mudasir Mehdi; M. Irfan; Usman Sheikh
    The Blow room plays an important role in the opening, cleaning, homogeneous mixing and blending, optimum process parameters are required to minimize/control the fiber rupture and lower the neps generation. Material transportation to chute for sub sequent process is also carried out while blow room is in action. The main object of this study is to achieve better sliver and yarn quality by implementing different settings at different machines. The blow room contributes only about 5 to 10% to production costs in the ring spinning mill. Cotton cleaning is an important spinning preparation process, and the degree of cleaning is therefore an interesting characteristic for the machine employed in this field. On the basis of the authors' research, they state that the determination of the clean ability based on the measures of trash by means of the device of control “Uster" permits to predict the future behavior of cotton in cleaning and gives a preview on the cleaning efficiency of cleaner and even a cleaning line. This means that it is possible to test cotton fibers at all stages of the cleaning process. The clean ability of cotton is clearly influenced by several fiber properties. We can notice that the clean ability strongly depends on the seed coat fragments and the micronaire value but does not depend on the trash content. So the determination of C allows to compare the effect of cleaning lines on the decrease and the fragmentation of trash and to evaluate the cleaning efficiency.
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    Effect on moisture management of different fabrics using different 100% pure yarns
    (UMT, Lhr, 2013) Qurbat Zahra
    The plain fabric was manufactured. In warp direction 100% cotton yarn was used and in weft different yarns like Tencel, Modal, Pro Modal, Bamboo, Polyester and cotton yarn in 100% pure form were used. Moisture Management test were perform on these yarns and was seen as the yarn decreases in Gsm its moisture management transfer property become less where’s the air permeability increases as the structure of yarn become regular. Water Vapour permeability of Tencel has much higher value as compared to polyester and other fibers. This property makes the Tencel fabric to be used in sports wear products. Bamboo and pro Modal cost is at average than other yarns so they can be used in making sports wear as there moisture management properties are near to tencel and modal.
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    Study of different types of ring travellers for their effects on yarn quality
    (UMT, Lhr, 2013) M. Adnan; Aleem Khan; Sarfraz Riaz; Tajdar Adil
    In the experiment we kept all parameters constant. Here we also performed experiment under these terms for each type of company traveller. Using these traveller one by one take results. We used three companies traveller respectively same no but different type of traveller. CISEL –VXL, ELI – RNF, and UIML –LRT. Due to different trails results we can easily identify which travellers best on the basis of IPI, hairiness & U %. On the basis of result the best traveller is VXL - CISEL 9/0 because of IPI value (89.5) is less than RNF and LRT. Unevenness Value (9.35%) is Lower than both others. Hairiness value (3.26) is also lower than others.
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    Vat dye printing on cellulosic fabric with reactive dye
    (UMT, Lhr, 2013) Muhammad Ramzan; Muhammad Usman Akhtar; Abdul Qadeer
    Discharge Printing is one of the recently generated printing. This print is a style of printing.Structure of discharge print is different from others printing styles. The main difference which distinguish it from others styles is the use of reducing agents. Sodium hydro sulfite was used as a reducing agent. The discharge print fabric has good textured. The faults arising in this printing style is due to the conditions which are not suitable for this. Discharge fabrics were preprocessed by different dyeing methods (i.e. exhaust and continuous) to apply discharge effects. Two different types of this style is discussed white discharge, and color discharge. There were no Cross-linking agents (binders used in pigment printing) applied before and after printing. The discharge paste is printed on to the dyed fabric and, usually during subsequent steaming; the dye in the pattern area is discharged. A white discharge is thus produced.Discharge is usually a water-based screen printing method. The majority of the ink has a water based component as its base. Water-based discharge prints can achieve the opacity of plastisol in addition to a very soft hand on dark-colored garments. It enables light, brighter colors to be obtained on a dark ground and Very sharp features like fine outlines, dots, raster etc., can be produced with total clarity, without any smudging (due to overlapping of contact colors) or outfitting problems normally faced by direct style of printing. The effect, clarity, distinction, richness and aesthetic appeal obtained add value for discharge printing. It is an expensive process with two stage application involved in dyeing or padding and discharge printing and most important results was Limited choice of ground and motif colors. Only dischargeable dyes can be discharged by this method. But in the color discharge printing we use different type of the color. When we use the vat dye color in the discharge printing that is little bit different form the white discharge in the vat discharge print cycle is print, dry, chemical pad, flash ageing, and Re- oxidation then washing.
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    Study of woven fabric faults and their remedies
    (UMT, Lhr, 2013) Haroon Abdullah
    This project contains experimental work about the common faults occurring in fabric and their remedies. It also consists of particular weaves prepared on the loom according to customer requirements.
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    Productivity enhancement in apparel unit by reducing rework
    (UMT, Lhr, 2013) Ahmad Imtiaz; Abdul Hannan; Hafiz Adeel ur Rehman; Muhammad Ans; Akram Yaqoob
    In garment industry there is lot of burden on production to be complete within lead time. For this purpose the operators and supervisors just try to concentrate on production irrespective of the quality they produce in garments. In the end it cause them problems and increase their rework. We did our project on increasing the productivity by reducing rework. We observed the production lines and find the main problem is in, in-line inspection and operator’s less dedication towards quality and his job. Improving inspection at needle point and supervisors should be true to their jobs are necessary to increase productivity and reducing rework
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    Implementation of lean manufacturing tool to reduce production time
    (UMT, Lhr, 2013) ALI JUNAID KHAN; M. SAAD IRFAN SH.; MANSOOR AHMED AZIZ; RAO FAISAL NASEEM; RANA JAHANZAIB; AZAM AKBAR
    Traditionally operated garment industries are facing problems like low productivity, longer production lead time, high rework and rejection, poor line balancing, low flexibility of style changeover etc. These problems were addressed in this study by the implementation of lean tools like cellular manufacturing, single piece flow, work standardization, just in time production etc.After implementation of lean tools, results observed were highly encouraging. Some of the key benefits entail production cycle time decreased by 8%, number of operators required to produce equal amount of garment is decreased by 14%, rework level reduced by 80%, production lead time comes down to one hour from two days, work in progress inventory stays at a maximum of 100 pieces from around 500 to 1500 pieces. Apart from these tangible benefits operator multi-skilling as well as the flexibility of style changeover has been improved. This study is conducted in the stitching section of a shirt manufacturing company. Study includes time studies, the conversion of traditional batch production into single piece flow and long assembly line into small work cells.
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    PCMs Incorporated Textile Laptop cooling pad
    (UMT, Lhr, 2013-04-02) Syed Ejaz Hassan Gillani; M.Irfan Hayat
    While you use laptop or notebook for a long period of time, you may realize that laptop get hot. Hot enough to toast your legs and it is very uncomfortable to continue using the laptop on your lap. The heat generates from laptop also reduce the lifetime of your internal components of laptop and make it halt and you need to restart your system. The project is to introduce Phase change material PCMs into Textile pad in order to prevent heating for sufficient long time and to protect your lap from the heat of the laptop. In order to do this we explain the types of material along with melting point and we detect the temperature of the laptop with different ways and according to that detected temperature we get the required chemical and introduced it into textile pad.