Saturday, December 28, 2019

Basic Concept of Textile - Free Essay Example

Sample details Pages: 5 Words: 1468 Downloads: 9 Date added: 2017/09/11 Category Advertising Essay Did you like this example? INTRODUCTION TO WEAVING KNITTING YARN Yarn is a long continuous length of interlocked fibres, suitable for use in the production of textiles, sewing, crocheting, knitting, weaving, embroidery and rope-making. TYPES OF YARN †¢ Spun yarn is made by twisting or otherwise bonding staple fibre together to make a cohesive(solid) thread. Twisting fibres into yarn in the process called spinning †¢ Filament yarn consists of filament fibres (very long continuous fibres) either twisted together or only grouped together. Don’t waste time! Our writers will create an original "Basic Concept of Textile" essay for you Create order Texturized yarns are made by a process of air texturizing, which combines multiple filament yarns into a yarn with some of the characteristics of spun yarns. WEAVING Weaving is the textile art in which two distinct sets of yarns or threads, called the warp and the filling or weft (older woof), are interlaced with each other to form a fabric or cloth. The warp threads run lengthways of the piece of cloth, and the weft runs across from side to side. TYPES OF WEAVE The manner in which the warp and filling threads interlace with each other is known as the weave. Different types of weaves are as follows: †¢ Plain weave †¢ Satin weave †¢ Twill Weaving involves the interlacing of two sets of threads at right angles to each other: the warp and the weft. PLAIN WEAVE plain weave also called tabby weave or taffeta weave is strong and hardwearing, used for fashion and furnishing fabrics. In plain weave, the warp and weft form a simple criss-cross pattern. Each weft thread crosses the warp threads by going over one, then under the next, and so on. The next weft thread goes under the warp threads that its neighbour went over, and vice versa. Structure of plain-woven fabric TYPES OF PLAIN WEAVE †¢ Balanced plain weaves are fabrics in which the warp and weft are made of threads of the same weight (size) and the same number of ends per inch as picks per inch. †¢ Basket weave is a variation of plain weave in which two or more threads are bundled and then woven as one in the warp or weft, or both. A balanced plain weave can be identified by its checkerboard-like appearance. It is also known as one-up-one-down weave or over and under pattern. SATIN WEAVE satin weave is one of the three important textile weaves. The satin weave is distinguished by its lustrous, or silky, appearance. Satin describes the way the threads are combined, and the yarn used may be silk or polyester, among others, giving different fabrics. The satin weave is characterized by four or more cool fill or weft yarns floating over a warp yarn or vice versa, four warp yarns floating over a single weft yarn. TWILL WEAVE A twill weave can easily be identified by its diagonal lines. It is made by passing the weft thread over one or more warp threads and then under two or more warp threads and so on, with a step or offset between rows to create the characteristic diagonal pattern. Because of this structure, twills generally drape well. Structure of a 2/2 twill Structure of a 3/1 twill WEAVING PROCESS †¢ Weaving involves the interlacing of two sets of threads at right angles to each other: the warp and the weft. †¢ The warp threads are moved up or down by the harnesses creating a space called the shed. The weft thread is wound onto spools called bobbins. By spacing the warp more closely, it can completely cover the weft that binds it, giving a warp faced textile such as rep weave. Conversely, if the warp is spread out, the weft can slide down and completely cover the warp, giving a weft faced textile, such as a tapestry. †¢ An Indian weaver preparing his warp REP WEAVE By spacing the warp more closely, it can completely cover the weft that binds it, giving a warp faced textile. TAPESTRY Tapestry is a form of textile art and is composed of two sets of interlaced threads in such a way that the warp threads are set up under tension on a loom, and the weft thread is passed back and forth across part or al l of the warps. Tapestry is weft-faced weaving, in which all the warp threads are hidden in the completed work, unlike cloth weaving where both the warp and the weft threads may be visible. KNITTING Knitting is a method by which thread or yarn may be turned into cloth or other fine crafts. Knitting consists of consecutive loops, called stitches. As each row progresses, a new loop is pulled through an existing loop. The active stitches are held on a needle until another loop can be passed through them. This process eventually results in a final product, often a garment. Knitting may be done by hand or by machine. By hand, numerous styles and methods of knitting exist. Different yarns and knitting needles may be used to achieve different end products by giving the final piece a different colour, texture, weight, or integrity. Using needles of varying sharpness and thickness as well as different varieties of yarn adds to the effect. COURSES AND WALES The yarn in knitted fabrics follows a twisting path called a course, forming symmetric loops also called bights symmetrically above and below the mean path of the yarn. These twisting loops can be stretched easily in different directions, which give knitting much more elasticity than woven fabrics; depending on the yarn and knitting pattern, knitted garments can stretch as much as 500%. A sequence of stitches in which each stitch is suspended from the next is called a wale. WEFT AND WARP KNITTING There are two major varieties of knitting: weft knitting and warp knitting. In the more common weft knitting, the wales are perpendicular to the course of the yarn. In warp knitting, the wales and courses run roughly parallel. In weft knitting, the entire fabric may be produced from a single yarn, by adding stitches to each wale in turn, moving across the fabric. In warp knitting, one yarn is required for every wale. Since a typical piece of knitted fabric may have hundreds of wales, warp knitting is typically done by machine, whereas weft knitting is done by both hand and machine. Basic pattern of warp knitting. Parallel white, red and green yarns zigzag lengthwise along the fabric, each loop securing a loop of an adjacent strand from the previous row. Thus, the two central wales in this picture are alternating whitered-white and red-green-red stitches. TYPES OF KNITTING There are 3 types of knitting as mention below: †¢ Circular knitting also called knitting in the roundâ€Å" Flat knitting †¢ Felting FLAT KNITTING VERSUS CIRCULAR KNITTING Circular Knitting Flat knitting †¢ is a form of knitting that creates a seamless tube. Knitting is worked in rounds in a spiral. A circular needle resembles two short knitting needles connected by a cable between them. †¢ Circular knitting is employed to create pieces that are circular or tube-shaped, such as hats, socks, mittens, and sl eeves. †¢ is used, in its most basic form, to make flat, rectangular pieces of cloth. It is done with two straight knitting needles and is worked in rows, horizontal lines of stitches. Flat knitting is usually used to knit flat pieces like scarves, blankets, afghans, and the backs and fronts of sweaters. FLAT KNITTING VERSUS CIRCULAR KNITTING Circular Knitting Flat Knitting KNITTING TOOLS Knitting needles in a variety of sizes (US 2, 4, 5, 6, 7, 8, 9, 10, 11, 13 and 15 from the bottom). The US size 7 and 15 needles are bamboo and wood, respectively, whereas the others are aluminium. Having a smoother surface, metal needles tend to produce faster knitting but stitches are more likely to slide off by accident. Double-pointed knitting needles, sometimes used for socks, collars and sleeves. Typically they come in sets of four or five; shown here are US size 8 in wood (left), and US size 1 in aluminium (right). KNITTING TOOLS Three different circular knitting needles of different sizes and composition. The inner beige one is short and thick (US size 13) and made of wood, whose roughness prevents stitches from slipping off. The red metal middle one is US size 9, and its tips have been screwed onto the nylon cord. The outer one is US size 5, nickelplated hollow brass for speed and unusually long, designed for lace and larger sweaters. CONCLUSION †¢ Weaving is worked on a loom. It is comprised of a series of individual threads (called warp threads) that are kept vertically under tension by the loom. The weaver then places horizontal rows of weft threads through the warp to make the cloth. The warp and the weft are always perpendicular to each other. †¢ Knitting is worked on a set of two pointed sticks (knitting needles). A single thread is worked in loops to make a row. Subsequent rows are built on the previous row to make the cloth, still using the same single thread. THANK YOU

Friday, December 20, 2019

Production and Operation Management - 864 Words

Production and Operation Management Cheng Guoping Chapter 1 Introduction 1. Production System 2. Production and operations in the organization 3. Function and jobs of POM 4. Decision Making in POM 5. The emergence of production and operation management 1. Production System Production and operation management (POM) is the management of an organization s production system, which converts input into the organization s products and services. 1.1 Production system model Inputs conversions subsystem output Feedback Feedback Figure 1 A production System Model 2. Common ground and differences between manufacturing and services 1.2.1 Common Ground: †¢ Entail†¦show more content†¦Production and operations in the organization Figure 2 Basic management responsibilities 3. Function and jobs of POM 3.1 Functions †¢ Manufacturing--cutting, drilling, milling, etc. Or Teaching, farming, packing, consulting, mixing, etc. †¢ Transporting †¢ Storing †¢ Plant maintenance and management †¢ Material management †¢ Quality control, etc. Table 2 functions of POM |Planing |Capacity | | |Location | | |Layout | | |Projects |Show MoreRelatedProduction And Operations Management : Production Management Essay941 Words   |  4 Pagesused in the production/operations subsystem of the organization into value added product/services in a controlled manner as per the policies of the organization, is the definition of Production/operations management. Consequently, it is that part of an organization, this part is involved in the transformation of a range of inputs, like men, material, machines, information and capital, into the required (products/services), with the requisite quality level. The group of correlated management activitiesRead MoreProduction Of Production And Operation Management1415 Words   |  6 PagesPRODUCTION OPERATION MANAGEMENT The focus of any business is to provide needs of customer by providing military and supplies, and in this procedure generate value for customers and solve their trouble. Production and operations management talks about applying big business association and management concepts in formation of supplies and military (1). PRODUCT: A product is defined as the thing offered for deal. A product can be a facility or an item. It can be material or in virtual form. Every productRead Moreproduction and operation management1377 Words   |  6 PagesPaper of Production and Operations Management IIBM Institute of Business Management Examination Paper Production and Operations Management Subject Code-B107 ï‚ · ï‚ · ï‚ · MM.100 Section A: Objective Type Short Questions (30 marks) This section consists of multiple choice Short Notes type questions. 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PRODUCT Though many authors define the product with Consumer orientation, it is better for us to deal with different angles, because it will be helpful for us to understand the subject of production and Operation Management. (i) For a Consumer: The product is a combination of or optimalRead MoreProductions and Operations Management737 Words   |  3 PagesProductions and Operations Management I The three categories of statistical quality control The three categories of SQC include the traditional statistical tools, acceptance sampling, and statistical process control (SPC). Traditional statistical tools are descriptive statistics like the mean and range, used to describe qualitative characteristics. Acceptance sampling is a process of taking a random sample or portion of a batch and deciding whether to accept or reject the whole batch. SPC is aRead MoreOperations Management : Production Management1657 Words   |  7 Pages Operations management is the art of knowledge that ensures that services and goods are produced and distributed successfully to customers. Operations management key objective is maximize efficiency while producing and effectively fulfilling customer needs. In this novel the operations management team is struggling to make this plant a profitable plant so it will not be shut down. Alex is wondering why is that he cannot produce quality products and respond to customer needs at a faster pace considerablyRea d MoreProduction Operation Management1195 Words   |  5 PagesProduction Operations Management Session 3-2 More on Processes 1 Outline ï‚ § Multi-product, multi-flow process analysis – So far: 1 product, 1 flow – Differing process times, yield issues, machine breakdown ï‚ § Big Takeaway: – Product-mix becomes critical in multiple flows – Implications in capital investment, scaling business, and risk management ï‚ § Calculating capacity when you have – Multiple flows †¢ With the same processing time at each resource †¢ With different processingRead MoreProduction and Operation Management890 Words   |  4 Pagesif they plan long-term operations in such countries. 8. Governmental regulation. Companies also may face government barriers and heavy restrictions and regulation if they intend to expand into other countries. Therefore, companies must examine governmental—as well as cultural—obstacles in other countries when developing location strategies. 9. Environmental regulation. Companies should consider the various  environmental regulations  that might affect their operations in different locationsRead MoreProduction and Operation Management657 Words   |  3 Pageswell within the control limits, although sample 24 is close to the XÌ… lower control limit and samples 17 through 22 are above the target. 3. Twelve additional samples of curetimes data from the molding process were collected from an actual production run. The data from these new samples are shown before. Update your control charts and compare the results with the previous data. The XÌ…- and R-chart are drawn with the new data using the same control limits established before. Comment on what the

Wednesday, December 11, 2019

Irony in A Modest Proposal by Jonathan Swift free essay sample

This paper shows how the author of the book utilizes irony as a tool to make the absurd a possibility. This paper describes how the author takes irony to the extreme. Rather than write a direct essay criticizing Irelands treatment of its poor, Swift realizes that irony and parody are much more effective tools. Consequently, he develops an absolutely absurd solution to Irelands poverty problem and bends reason to persuade his readers directly that his proposal that Irelands wealthy eat the poor babies is a possible one, and indirectly that Irelands treatment of the poor may as well be cannibalistic in its cruelty. This is arguably the most successful passage in the piece. In one fell swoop, Swift professes his sincerity in suggesting that eating babies would give pleasure to the rich and that Swift himself is exempt from this proposal. He does this by combining the reasoning device of sincerity discussed above with another example of lulling the reader into submission: the public good of the country, advancing the trade, providing for infants and relieving the poor are all worthy goals to attain. We will write a custom essay sample on Irony in A Modest Proposal by Jonathan Swift or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page But Swift tacks on giving some pleasure to the rich to the end of that list, and as readers, we at first swallow that benefit as well, but on a double-take, realize that giving pleasure to the rich is not one of our duties, it just seems that it is given societys ills.

Wednesday, December 4, 2019

Free Siddharthas The River and the Mind/Bod Essay Example For Students

Free Siddharthas: The River and the Mind/Bod Essay y Dichotomy Hesse Siddhartha EssaysThe River and the Mind/Body Dichotomy in Siddhartha In Herman Hesses work Siddhartha, the primary physical symbol of division is the river. One side of the river represents geist, or a realm concerned with the spiritual world. The second side represents natur, the natural world where the flesh is engorged with pleasure and earthly satisfaction. Siddhartha begins on the spiritual side of the river. He is in training to become an excellent Brahmin like his father, much is expected of this intelligent and attractive young man. Yet Siddhartha feels a rumbling in his body and mind. His soul is not satisfied with the answers that he has received about problems in life. He feels the need to live his home in order to find these answers. He is willing to sacrifice security for insecurity and danger. His travels renew and strengthen his spirit. The structure of the story is centered around the apparatus of iterative-durative time, a technique in which the author follows a loose linear chronlogy, with each part covering approximately twenty years, while only about one or two of those years are described in any detail. The effect easily lulls the reader into a perception of the passing time. He first spends time with a roving band of asceitics, forest-dwelling nomads that prefer to live a life of extreme sacrifice and self-denial. Siddhartha masters their art and goals, but shortly decides to move on after only a few years. He is not able to find his quest for salvation and understanding on such a path. Throughout his journey, his friend Govinda stays by his side. He decides to leave the town with him, come with him and practice with the ascetics, and then agrees to leave with him to seek out the Illustrious One, Gotama. Siddhartha does not find the answers to his spiritual queries here either, and decides to move on again. This time Govinda, his shadow, decides to stay and make a niche for himself. Siddhartha strikes out on his own, crossing the center symbol of the river with the help of the boatman Vasudeva. After crossing the river he encounters an Indian woman who encourages him and allows him to kiss her nipple. His experience with the natur world has begun, his experiences of the sense being heightened and readied for a sensual deluge. He remains on the sensual side of the river for twenty years and in that time impregnates his seductive teacher and partner Kamala. Their child will later teach him many lessons. Siddhartha leaves the town he had been living in because he is disgusted with and tired of his lifestyle. He comes to the river and is so destitute that he is about to kill himself in it. Immediately before letting himself plunge to a watery death, he hears a sound emanating from the river. The riverno longer seen as divisive, it gives solidity and meaning to both banks. It combines elements of the spiritual world along with that of the flesh. The infinite and universal Om is emitted from the river and it saves Siddhartha. The now aging Siddhartha makes his life with Govinda the boatman. His life has finally come to the point where he had always been seeking to find himself. He is at the middle of the spiritual and natural world. A true synthesis is the key to his sense of peace. The river and Siddharthas perception of the harsh discordance between the spirit and natural self eventually culminate in realizing the importance of both. His life on the river, his constant journeying from one bank to the other, largely represent this realization and his discovery about life. This work can help teacher any young, idealistic, searching spirit about life and the necessity of synergy in ones philosophical and practical thought about life.