Geotextile and it's application on Bangladesh
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Detailed concept on geotextile- its evolution, application, current benefits received by Bangladesh and future opportunities for making sustainable environment. Feel free to read and share with others. You may find your desired topics on my other slides. Thank you.
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Weaving Department about loom mechanism _unit_2
The document provides information about different types of loom motions and shedding mechanisms used in weaving looms. It describes the primary motions of shedding, picking, and beating. It then discusses different types of sheds including bottom close shed, centre close shed, semi-open shed, and open shed. The rest of the document focuses on different mechanisms used to create the shed, specifically tappet shedding mechanism, dobby shedding mechanism, and jacquard shedding mechanism. It provides details on the working and advantages and disadvantages of tappet shedding mechanism.
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The beating-up mechanism is used in weaving to push the newly inserted weft pick to the fell of the cloth. It consists of a reed fixed to a sley that is given a quick motion towards the fell by cranks connected to a crankshaft. The main parts include the crankshaft, crank, connecting arm, reed cap, reed, sley race, sley, and sleysword. The sley receives a reciprocating motion from the rotating crankshaft via the crank and connecting arm, which pushes the reed and new weft pick to the fell. Some looms use a double beating-up mechanism with two arms to give two blows per
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This document summarizes a student's summer training project on reducing warp breaks at a weaving department. It includes an introduction, acknowledgements, objectives, and sections on literature review, materials and methods, cost benefit analysis, inferences, and conclusions. The student conducted the project under the guidance of Mr. A.K.S. Gangwar to analyze causes of warp breakage and reduce warp breaks per machine at a textile company.
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The document discusses the process of fabric manufacturing from yarn production through several steps. There are three basic steps: 1) yarn production where fibers are spun into threads, 2) weaving or knitting where yarns are interlaced or looped to form fabric, and 3) further processing like bleaching, dyeing, and finishing to produce the final fabric. It then focuses on different types of knitting, including weft and warp knitting, and finishing processes like ironing, folding, and cartoning of knitwear products. The knitwear industry in Bangladesh is mainly located in the Narayanganj district.
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- Projectile looms produce fabrics with good quality at high efficiency and low energy use. They can weave a wide variety of yarns from fine to coarse.
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1. The document discusses how knitted fabric specifications like GSM, stitch length, and yarn count are related. It provides equations to calculate the yarn count needed to achieve a desired GSM for different fabric types.
2. Key findings are that stitch length increases as GSM decreases, and compact structures with shorter loops have higher GSM than loose structures. Calculated GSM values also varied more from actual GSM for fabrics with knit and tuck loops like pique.
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This document is an 11-page lab report on studying a flat bed knitting machine. It includes diagrams of the machine's yarn path, needle beds arranged in a V formation, and cam carriage system. The report describes the machine parts like the needle beds, yarn carriers, and different cams. It explains the knitting action where the needle butts are lifted and lowered by the cam system to transfer stitches and form new loops. The conclusion states that this experiment provided an introduction to flat bed knitting machine operations and settings that could help with industrial applications.
Singeing
1) Fabric singeing machines use heated plates, cylinders or gas flames to remove projecting fibers from fabric surfaces.
2) Plate singeing passes fabric over heated copper plates while roller singeing uses a heated cylinder.
3) Gas singeing is most common, using burners to singe both sides of fabric simultaneously as it passes through guide rollers.
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Eco-Jutex produces and exports various jute products including yarn, twine, and rope. Their jute products are made from 100% natural Bangla Tossa fiber and are available in different counts, plies, diameters, and packings. Their jute products are used for carpet and bag weaving, crafts, home decor, and other purposes. Eco-Jutex aims to develop reliable business relationships through competitive pricing and quality products.
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Cotton fabric shrinks due to the swelling of cotton fibers in water and the release of mechanical stresses from spinning and weaving. The anti-shrink finishing process uses a sanforizing machine to pre-shrink cotton fabric in a controlled way. The machine places the moistened fabric onto the concave surface of a stretched rubber blanket. As the blanket contracts, the fabric is forced to shrink with it, preventing excessive shrinkage during washing. Key parts of the machine include feed rollers, sprayers, a steaming unit, and a rubber blanket wrapped around a heated cylinder. The amount of shrinkage can be controlled by adjusting the tension on the blanket and its thickness.
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The document is a lab report that details measurements taken of the student's own body. It includes an introduction outlining the importance of accurate body measurements for sewing clothing. The objectives are to learn standard body measurements, how to measure accurately, and how to measure one's own body. A variety of circumference, torso, leg, and arm measurements are recorded in detail in tables. The student acknowledges some measurements may not be perfectly accurate as they measured themselves. The conclusion is that the student now understands where to take measurements and can measure body sizes in the future.
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Weft Knitting
In weft knitting, the loops are formed across width of the fabric Each weft thread is fed , more or less at right angles to the direction in which the fabric is produced.Weft-knit fabrics may also be knit with multiple yarns, usually to produce interesting color patterns.
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The document is a presentation about technical textiles focusing on geotextiles. It includes:
- An introduction to geotextiles, which are synthetic permeable textiles used in civil engineering to improve soils.
- The main types of geotextiles like woven, nonwoven, knitted, and their properties and functions.
- Applications of geotextiles like roads, dams, drainage, and erosion control.
- Advantages of geotextiles in strengthening soils cost effectively.
- Major geotextiles companies in Bangladesh.
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The document discusses the process of fabric manufacturing from yarn production through several steps. There are three basic steps: 1) yarn production where fibers are spun into threads, 2) weaving or knitting where yarns are interlaced or looped to form fabric, and 3) further processing like bleaching, dyeing, and finishing to produce the final fabric. It then focuses on different types of knitting, including weft and warp knitting, and finishing processes like ironing, folding, and cartoning of knitwear products. The knitwear industry in Bangladesh is mainly located in the Narayanganj district.
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The document summarizes projectile weaving, which uses gripper projectiles to insert weft threads into warp threads. Key points:
- Projectile weaving machines were invented in 1924 and introduced commercially in 1953. They use small, bullet-like projectiles to insert weft threads at high speeds up to 1500 picks per minute.
- Projectile looms produce fabrics with good quality at high efficiency and low energy use. They can weave a wide variety of yarns from fine to coarse.
- The projectile is propelled through the warp shed using stored energy from a twisted metal torsion bar, allowing very high insertion speeds. It grips the weft securely and deposits it without
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This presentation discusses the process of dip dyeing garments. It begins with an introduction and background of the presenter. Then, it defines different types of dyeing including dip dyeing. The document proceeds to describe the dip dyeing process which involves immersing garments in dye baths to create gradients from darker at the bottom to lighter at the top. It provides details on the equipment, pre-treatment, recipes, and step-by-step working procedures for dip dyeing a batch of baby girl shorts.
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The document discusses combing preparatory processes. It describes the need for combing preparatory, which includes fiber straightening, reversing fiber flow, and producing a flat sliver. Traditionally, this involved a sliver lap machine and ribbon lap machine, but now mostly uses a draw frame and sliver lap machine. The objectives of combing preparatory are to straighten fibers, reverse flow, maximize leading fiber hooks, and produce a flat sliver. Different machine types and their functions are explained, including parameters that influence the combing operation and quality of the finished product.
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Change of fabric gsm vary with yarn count
1. The document discusses how knitted fabric specifications like GSM, stitch length, and yarn count are related. It provides equations to calculate the yarn count needed to achieve a desired GSM for different fabric types.
2. Key findings are that stitch length increases as GSM decreases, and compact structures with shorter loops have higher GSM than loose structures. Calculated GSM values also varied more from actual GSM for fabrics with knit and tuck loops like pique.
3. Tables show measured GSM values for different fabrics with varying yarn counts and stitch lengths. Equations presented allow selecting the proper yarn count to get a required GSM for fabrics like single jersey,
Nonwoven
This document provides information about nonwoven fabrics, including definitions, history, production processes, characteristics, uses, and the roles of industry associations. It defines nonwoven fabrics as sheet materials made from long fibers bonded together without weaving or knitting. The production of nonwovens began in the 19th century and expanded commercially in the mid-20th century. Key points covered include the main steps of nonwoven production, common fiber materials, properties such as absorbency and strength, and applications in areas like filtration, hygiene, medical, furniture, and automotive. Industry associations that support the development of nonwovens are also mentioned.
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The document is a presentation about a draw frame machine. It defines a draw frame as a machine that blends, doubles and levels slivers of cotton by drafting and doubling them. It lists the key parts of the machine and describes the actions of drafting, doubling and drawing that take place. The tasks of the draw frame are to equalize, parallelize and blend slivers, while removing dust. The waste produced includes filter, clearer and sliver cut waste.
Study on Flat Bed Knitting Machine
This document is an 11-page lab report on studying a flat bed knitting machine. It includes diagrams of the machine's yarn path, needle beds arranged in a V formation, and cam carriage system. The report describes the machine parts like the needle beds, yarn carriers, and different cams. It explains the knitting action where the needle butts are lifted and lowered by the cam system to transfer stitches and form new loops. The conclusion states that this experiment provided an introduction to flat bed knitting machine operations and settings that could help with industrial applications.
Singeing
1) Fabric singeing machines use heated plates, cylinders or gas flames to remove projecting fibers from fabric surfaces.
2) Plate singeing passes fabric over heated copper plates while roller singeing uses a heated cylinder.
3) Gas singeing is most common, using burners to singe both sides of fabric simultaneously as it passes through guide rollers.
Jute yarn catelogue
Eco-Jutex produces and exports various jute products including yarn, twine, and rope. Their jute products are made from 100% natural Bangla Tossa fiber and are available in different counts, plies, diameters, and packings. Their jute products are used for carpet and bag weaving, crafts, home decor, and other purposes. Eco-Jutex aims to develop reliable business relationships through competitive pricing and quality products.
Durable press finish
Durable press finishing provides fabrics with crease retention and freedom from ironing after washing through the use of cross-linking resins. The process involves padding the fabric with a resin like DMDHEU, making the fabric into garments, and curing them at a high temperature to set the creases. This provides better crease retention than wash and wear finishes. The resin must cure at high heat without discoloring and remain fast after washing. However, durable press finishing can reduce fabric strength and abrasion resistance due to the high resin levels and prolonged curing, so softeners are added to minimize these issues.
Anti shrink finish
Cotton fabric shrinks due to the swelling of cotton fibers in water and the release of mechanical stresses from spinning and weaving. The anti-shrink finishing process uses a sanforizing machine to pre-shrink cotton fabric in a controlled way. The machine places the moistened fabric onto the concave surface of a stretched rubber blanket. As the blanket contracts, the fabric is forced to shrink with it, preventing excessive shrinkage during washing. Key parts of the machine include feed rollers, sprayers, a steaming unit, and a rubber blanket wrapped around a heated cylinder. The amount of shrinkage can be controlled by adjusting the tension on the blanket and its thickness.
175035 apparel lab 01 asad sir
The document is a lab report that details measurements taken of the student's own body. It includes an introduction outlining the importance of accurate body measurements for sewing clothing. The objectives are to learn standard body measurements, how to measure accurately, and how to measure one's own body. A variety of circumference, torso, leg, and arm measurements are recorded in detail in tables. The student acknowledges some measurements may not be perfectly accurate as they measured themselves. The conclusion is that the student now understands where to take measurements and can measure body sizes in the future.
textile internship
The document provides details about an internship at Jaya Shree Textiles, the largest manufacturer of linen fabric in India. It describes the various processes involved in linen fabric production from bale opening to packaging, including hackling, drawing, roving, wet spinning, dyeing, warping, weaving, bleaching, and quality inspection. Key aspects of each process are highlighted such as the machines used, production rates, parameters, and quality control measures.
Terry Towel Production
A terry towel is a textile product which is made with loop pile on one or both sides generally covering the entire surface or forming strips, checks or other patterns. Special type of weaving technique is required for terry towel manufacturing. Terry towels are often very complex with yarns of different types and colors, in combination with various loop pile and flat structures. The name "terry" comes from the word "tirer" which means to pull out, referring to the pulled out by hand to make absorbent traditional. Turkish toweling Latin "vellus" meaning hair has the derivation "velour" which is the toweling with cut loops.There are many types of towel. Baby Towel, Bath Towel, Beach Towels, Golf Towels ,Hand Towel and Hotel Towels now used commonly.
Weft Knitting
In weft knitting, the loops are formed across width of the fabric Each weft thread is fed , more or less at right angles to the direction in which the fabric is produced.Weft-knit fabrics may also be knit with multiple yarns, usually to produce interesting color patterns.
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Knitting Technology of Bangladesh 2021 - Knitting Manufacturing Technology
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- The main types of geotextiles like woven, nonwoven, knitted, and their properties and functions.
- Applications of geotextiles like roads, dams, drainage, and erosion control.
- Advantages of geotextiles in strengthening soils cost effectively.
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Geotextile and it's application on Bangladesh
- 1. Presenter ID: 181-23-5270 Presentation on Geotextile and it’s application on Bangladesh Course Code: TE-4111 Course Title: Technical Textiles 01
- 2. Table of Contents 01 02 04 Introduction Fibers used as geotextile Properties 02 05 Uses of geotextile 03 Types of geotextile 08 06 07 Conclusion Projects Company produces geotextile in Bangladesh
- 4. 04 • Permeable textile material used for filtration, drainage, separation, reinforcement and stabilization process as an integral part of civil engineering structures of earth, rock or other constructional materials. Introduction:
- 5. 05 • Environment friendly • Cheap • Easy installation process • Creates new dimension of possibilities • Excellent sealing and erosion control • Reduces PWP Introduction:
- 7. 07 Natural fibers: Jute, coir Synthetic fibers: Polypropylene, polyethylene, polyester and polyamide. Fibers used as geotextile:
- 9. 1 . Woven Geotextiles: • Perform the functions of separation and reinforcement. • They are referred to by tensile strength. • Offer a very high load capacity. • Ideal choice for roads, parking lots, etc. Types of geotextile: 09
- 10. 2 . Non-woven Geotextiles: • Felt-like. • Referred to by weight. • Ideal for any hardscape project where filtration or drainage is needed. Types of geotextile: 10
- 11. 3 . Poly-spun Geotextiles: • Non-woven fabrics. • Referred to by lifespan. • Most commonly used as weed barriers. Types of geotextile: 11
- 12. 4 . Spun bound Geotextiles: • The fastest manufacturing method for nonwoven fabrics. • Referred to by weight. • Commonly used as weed barriers or as drainage fabrics. Types of geotextile: 12
- 13. 5 . Knitted Fabrics: • Manufactured using knitting process. • Only a very few knitted types are produced. • All of the knitted geo-synthetics are formed by using the knitting technique in conjunction with some other method of geo-synthetics manufacture, such as weaving. Types of geotextile: 13
- 14. Properties 14
- 15. • Availability. • Super abundant drape ability. • Greater Moisture Retention Capacity. • Flexible Costs. • Ease of Installation. • Bio-degradable Properties. Properties: 15
- 17. • Erosion Control • Hydraulic Works • Drainage/Filtration • Ground Systems • Road Works • Construction • Waste Disposal Uses of geotextile: 17
- 18. 18
- 19. Company produces geotextile in Bangladesh 19
- 20. • Nahee Geo- Textile Industries Limited • Jute.com.BD • DIRD Felt Ltd • BST Engineering & Galvanizing. • M/s. Knit Sew Combination. • Xtra Power Bangladesh. • Seconds Industries Limited. • Traditional Bangladesh. • Rohani Fabrics. • Al Salam Fabrics (Pvt.) Ltd. • United Tex (BD) Int'l Ltd. Company produces geotextile in Bangladesh: 20
- 21. Projects 21
- 22. • Synthetic geo bag laid alongside the Cox’sbazar to Teknaf marine drive. • Synthetic geo tube laid at Matarbari deep sea port. • Drainage trenches at all the Bangladesh cricket and football stadium. • Geo bag at Jamuna-Meghna River erosion mitigation project. Projects: 22
- 23. Conclusion 23
- 24. 24 Geotextile is one of the important sector of technical textile. From Bangladesh perspective its need and importance is growing day by day. Also due to blessing of jute fiber there's a huge opportunity for us to earn more foreign currency. Along with it will give us a fighting chance against natural disasters. So it is a matter of hope for us to improve it in future and establish it as on of the biggest foreign currency earning industry in our country. Conclusion:
- 25. Thank you 25