Polyester(man made fibres)
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Introduction of polyester fibre Forms of polyester Microscopic view Different structure and appearance of polyester Characteristics of polyester Manufacturing of polyester Properties of polyester Physical properties Chemical properties Thermal properties
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This document provides guidelines for sampling procedures when testing cotton fibers to determine their quality properties. It discusses:
- The need for representative sampling due to natural variations in fiber properties within and between cotton bales.
- Procedures for obtaining a gross sample by drawing tufts from 10 equally spaced layers across randomly selected bales based on the lot size.
- Reducing the gross sample size by spreading it out and randomly pulling tufts weighing about 4g from 25 sub-squares of a 1m x 1m area or 2g from 50 sub-squares of a 1m x 2m area.
- Further reducing the reduced sample into 25 or 50 approximately equal parts for fiber testing.
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This document provides information on principles of wool spinning. It discusses the classification of wool types, how wool is obtained from sheep, and the processes involved in preparing wool for yarn production. The key steps discussed are:
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2. Scouring wool to remove grease and other impurities.
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This document provides guidelines for sampling procedures when testing cotton fibers to determine their quality properties. It discusses:
- The need for representative sampling due to natural variations in fiber properties within and between cotton bales.
- Procedures for obtaining a gross sample by drawing tufts from 10 equally spaced layers across randomly selected bales based on the lot size.
- Reducing the gross sample size by spreading it out and randomly pulling tufts weighing about 4g from 25 sub-squares of a 1m x 1m area or 2g from 50 sub-squares of a 1m x 2m area.
- Further reducing the reduced sample into 25 or 50 approximately equal parts for fiber testing.
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Textile yarn manufacturing involves several key steps. Fibers are first opened and cleaned through blowroom and carding processes. Drawing further arranges fibers into parallel strands called slivers. Roving attenuates slivers and adds twist. Ring frames then spin roving into yarn using drafts and twist. Combing upgrades raw materials by removing short fibers. The processes work to arrange, draft, and twist fibers into consistent yarns for weaving or other uses.
Textile testing
Textile testing involves measuring properties and characteristics of textiles using techniques, tools, instruments, and machines in the laboratory. It is important for quality control in the textile industry and helps establish standards and specifications. There are various sampling techniques used for textile testing depending on the form of the material (fiber, yarn, fabric), amount of material, type of test, and information required. Random sampling aims to select samples randomly to represent the bulk material, while biased sampling may be influenced by other factors. Common fiber sampling techniques include squaring, cut squaring, and zoning to select representative samples.
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This document discusses various characteristics of yarn that are tested, including linear density, twist, yarn evenness, hairiness, bulk, and friction. It provides details on different systems for measuring linear density, the types and importance of twist, factors that affect hairiness, and methods for measuring and recovering from yarn hairiness. The document was submitted by five students - Md Mahmud Mia, Imran Hasan, Hasan Al Mamun, Mahabubur Rahman, and Naiemmur Rahman.
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This document discusses different types of yarn faults, including:
1. Yarn content in the cop being less, causing efficiency loss and more knots. This can be caused by underutilization of bobbin height or improper ratchet settings.
2. Slubs, which are thick lumps showing less twist. This can damage fabrics and cause shade variations. Poor carding, machine dirtiness, and drafting issues can cause slubs.
3. Neps, which are rolled fiber masses visible on black boards. This also damages fabrics. Machine cleaning, carding, and drafting are important to prevent neps.
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Spirality and shrinkage are common problems in knitted fabrics that can be influenced by various factors. [1] Spirality occurs when wales are not perpendicular to courses and is affected by yarn twist, count, fabric structure, and machine settings. [2] Shrinkage is a decrease in length or width upon washing and is mainly due to yarn swelling; it can be impacted by GSM, stitch length, and fabric type. [3] The document discusses measuring and reducing spirality and shrinkage through parameters like yarn and fabric properties as well as processing methods.
Singeing
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2. There are three main types of singeing machines: gas, plate, and rotary cylinder. Parameters like flame intensity, fabric speed, and distance between flame and fabric must be optimized.
3. Singeing removes loose fibers and improves fabric appearance, allowing for clearer printing and reducing soiling and pilling. Precautions must be taken to avoid over-singeing or damaging heat-sensitive fibers.
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This document provides an overview of man-made fiber formation and regenerated fibers. It discusses the basic principles of fiber manufacturing, including converting the fiber-forming substance into a fluid and extruding it through spinnerets. Melt spinning and solution spinning methods are described. Regenerated fibers like viscose rayon and cellulose acetate are examined, outlining their production processes and key properties. Viscose rayon is made through wet spinning cellulose into a viscose solution, while acetate is produced via dry spinning after acetylating cellulose. Their uses include clothing, home goods, and industrial applications.
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This document discusses non-woven textiles. It covers raw materials like cotton, rayon, wool, polyamide/polyester and acrylic. It describes properties of non-wovens like fiber description, bonding agents, binder mechanisms, classification of binders and types of binders. It also discusses manufacturing steps for non-wovens including wet laid, dry laid, air laying, spun laid and melt blown processes. Finally, it outlines bonding techniques such as mechanical, chemical and thermal bonding.
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This document provides an overview of non-woven fabrics. It defines non-woven fabrics as sheet or web structures bonded together by entangling fibers or filaments mechanically, thermally, chemically or through solvent treatment. The document discusses the history of non-woven fabrics and mentions some early precursors. It also outlines different types of non-woven fabrics based on materials used and manufacturing processes. Common applications of non-woven fabrics in various industries are also summarized.
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This presentation summarizes key information about polyester fiber. It discusses that polyester is a synthetic polymer derived from the reaction of an alcohol and acid. The presentation provides microscopic views and describes the main types of polyester fibers, including polyethylene terephthalate and poly-1,4-cyclohexyline dimethylene terephthalate. It also outlines the manufacturing process of polyester filament and lists the physical and chemical properties of polyester fiber. Some common uses of polyester include clothing, home furnishings, and industrial applications like ropes and tires.
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Elastomeric fibers are fibers that can stretch to very high elongations (400-800%) and rapidly recover their original length. They include fibers made from natural and synthetic rubbers as well as spandex and polyacrylates. Elastomeric fibers are produced via a spinning process where polymers are mixed and reacted to form long chains, then extruded through spinnerets into a water bath or air to solidify. The fibers have excellent elasticity and strength even at high elongations. Common applications include clothing, automotive and industrial parts, coatings and more where elasticity is required.
Drafting in spinning process
Drafting irregularities and their causes and remedies,Amount of draft and draft distribution on strand irregularity,Draft distribution,Recommended total draft range,Limitations of apron drafting and the scope for improvement.
Pigment Dyeing
DEFINITION: Pigment is a substrate in a particulate form which is insoluble in water but which can be dispersed in this medium to modify its color and light scattering properties. They are organic or inorganic coloring materials. They have no affinity to textile materials. They are fixed on the textile material with the help of binding agent in form a thin invisible coating.
Heat setting
Heat setting is a heat treatment applied to thermoplastic fabrics like polyester and nylon to impart dimensional stability. It involves heating the fabric above the glass transition temperature to allow polymer chains to rearrange into a stress-free configuration, then cooling to fix this new shape. Uneven heating can cause unlevel dyeing. Proper heat setting improves crease resistance but can reduce dye uptake if not done uniformly before dyeing. Stenters are commonly used and temperature, moisture, and processing time must be carefully controlled to avoid issues like fabric yellowing or stiffness.
Fundamentals of Textile & Man made fiber
The document is a presentation on textiles and man-made fibers from Southeast University in Bangladesh. It includes sections on textile fibers and their classification, properties of man-made fibers and how their chemical structure influences these properties. It also discusses various spinning processes like melt, dry, and wet spinning and manufacturing processes for specific fibers like viscose and cuprammonium rayon.
Yarn Count
This document discusses yarn count systems. It explains that yarns come in different thicknesses and are typically sold based on weight. There are two main systems for expressing yarn count: direct and indirect. Direct systems indicate the weight of a given length of yarn, while indirect systems indicate the length of yarn in a given weight. Common direct units include tex, dtex, and ktex which measure grams per 1000 meters, 10000 meters, and 1 meter respectively. Common indirect units include Nm, Nec, and Nw which measure meters, 840-yard hanks, and 560-yard hanks per gram respectively. The document provides examples and conversion factors between different count systems.
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Milling is a process that felts wool fabrics to make them thicker, fuller, and more uniform. It involves treating wool fabrics with moisture, heat, and pressure in a milling machine. There are several types of milling depending on the chemicals used, such as alkaline milling using sodium carbonate, soap milling using soap solutions, and acid milling using diluted sulfuric acid. The objective is to felt the wool fibers together to condense and shrink the fabric while also making the weave less visible. Milling improves the strength, handle, and appearance of the wool fabric.
Yarn Manufacturing
Textile yarn manufacturing involves several key steps. Fibers are first opened and cleaned through blowroom and carding processes. Drawing further arranges fibers into parallel strands called slivers. Roving attenuates slivers and adds twist. Ring frames then spin roving into yarn using drafts and twist. Combing upgrades raw materials by removing short fibers. The processes work to arrange, draft, and twist fibers into consistent yarns for weaving or other uses.
Textile testing
Textile testing involves measuring properties and characteristics of textiles using techniques, tools, instruments, and machines in the laboratory. It is important for quality control in the textile industry and helps establish standards and specifications. There are various sampling techniques used for textile testing depending on the form of the material (fiber, yarn, fabric), amount of material, type of test, and information required. Random sampling aims to select samples randomly to represent the bulk material, while biased sampling may be influenced by other factors. Common fiber sampling techniques include squaring, cut squaring, and zoning to select representative samples.
yarn test
This document discusses various characteristics of yarn that are tested, including linear density, twist, yarn evenness, hairiness, bulk, and friction. It provides details on different systems for measuring linear density, the types and importance of twist, factors that affect hairiness, and methods for measuring and recovering from yarn hairiness. The document was submitted by five students - Md Mahmud Mia, Imran Hasan, Hasan Al Mamun, Mahabubur Rahman, and Naiemmur Rahman.
Yarn manufacturing (yarn faults)
This document discusses different types of yarn faults, including:
1. Yarn content in the cop being less, causing efficiency loss and more knots. This can be caused by underutilization of bobbin height or improper ratchet settings.
2. Slubs, which are thick lumps showing less twist. This can damage fabrics and cause shade variations. Poor carding, machine dirtiness, and drafting issues can cause slubs.
3. Neps, which are rolled fiber masses visible on black boards. This also damages fabrics. Machine cleaning, carding, and drafting are important to prevent neps.
Yarn Hairiness
Hairiness is characterized by the quantity of freely moving fibre ends or fibre loops projecting from a yarn or textile fabric (woven, knitted or non woven fabrics).
In term of measurement Hairiness corresponds to the total length of the protruding fibres in unit length of one centimeter.
Sports textiles
Sport tech, also known as sports textiles or technical textiles for sports, refers to textile materials used for sports and leisure purposes, mainly in sportswear, shoes, and accessories. Traditional cotton fabrics were replaced by synthetic fibers with properties like moisture wicking, breathability, and stretch. These fabrics must withstand stresses from activities while keeping athletes dry and comfortable. New developments include smart fabrics with sensors and phase change materials. The global sportswear market was worth $126 billion in 2015 and continues to grow. Common fibers used include polyester, nylon, spandex and cotton. Major brands include Nike, Adidas, and Puma.
Jigger dyeing machine
This document provides information about jigger dyeing machines. It discusses that jigger dyeing machines apply tension to woven fabrics as they pass through a dye bath. The document outlines the main parts of jigger dyeing machines, including guide rollers, take up rollers, let off rollers, and dye baths. It also discusses technical details like fabric tension and speed. The document summarizes advantages of modern jigger dyeing machines like improved tension and speed control. It notes that jiggers are suitable for dyeing woven fabrics up to boiling temperatures without creasing.
Flock printing
Flocking is defined as the application of fine particles to adhesive coated surfaces. Nowadays, this is usually done by the application of a high-voltage electric field. In a flocking machine the "flock" is given a negative charge whilst the substrate is earthed. Flock material flies vertically onto the substrate attaching to previously applied glue.
Presentation on spirality & shrinkage
Spirality and shrinkage are common problems in knitted fabrics that can be influenced by various factors. [1] Spirality occurs when wales are not perpendicular to courses and is affected by yarn twist, count, fabric structure, and machine settings. [2] Shrinkage is a decrease in length or width upon washing and is mainly due to yarn swelling; it can be impacted by GSM, stitch length, and fabric type. [3] The document discusses measuring and reducing spirality and shrinkage through parameters like yarn and fabric properties as well as processing methods.
Singeing
1. Singeing is the process of burning off protruding fiber ends from fabric surfaces to obtain a smooth finish and reduce pilling. It is done by passing fabric over an open flame or heated plates.
2. There are three main types of singeing machines: gas, plate, and rotary cylinder. Parameters like flame intensity, fabric speed, and distance between flame and fabric must be optimized.
3. Singeing removes loose fibers and improves fabric appearance, allowing for clearer printing and reducing soiling and pilling. Precautions must be taken to avoid over-singeing or damaging heat-sensitive fibers.
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garments---Effect of blent ratio on quality of polyester/cotton yarns
This document provides an introduction and overview of a project presentation on the effect of blend ratio on the quality of polyester/cotton yarns. The project aims to compare different blend ratios in terms of yarn quality parameters to determine the best quality blended yarn. Literature on cotton, polyester, and blended fibers is reviewed, including properties, objectives of blending, and blending types. The document outlines the project structure, which involves testing polyester/cotton blend yarns against 100% cotton yarn across quality metrics like CVm%, strength, and hairiness.
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Polyester fibers
Polyester fibers are long chain synthetic polymers composed of at least 85% ester units, most commonly polyethylene terephthalate (PET). PET is produced via the reaction of terephthalic acid and ethylene glycol. Polyester fibers are strong, durable, resistant to moisture and chemicals, and can be manufactured into filaments or staple fibers. They are widely used to make clothing, home furnishings, industrial products, and frequently blended with other fibers like cotton and wool.
Man made fibre presentation from basic to higher level
This document provides an overview of a course on man-made fibers taught by Dr. Mukesh Bajya. The course aims to develop an understanding of man-made fiber manufacturing processes and properties. Key topics covered include the history of man-made fibers, fiber formation methods like melt spinning and solution spinning, drawing and heat setting, common man-made fibers like polyester, nylon and acrylic, structure-property relationships, and new developments in the field. The course involves 40 total lectures across various fiber production topics.
Fibre mechanical engineering 2016*
This document provides information on recommended books for engineering chemistry, lists common polymers including their production methods, and discusses various properties of synthetic fibers such as length, crimp, denier, abrasive resistance, water absorbance, chemical stability, and dyeing capacity. It also covers fiber modifications through changes to the spinneret, molecular structure, additives, and complex modifications.
Bicomponent fibers
Bicomponent fibers are comprised of two polymers extruded from the same spinneret within the same filament. They can have side-by-side, sheath-core, islands-in-the-sea, or segmented pie cross-section structures. Bicomponent fibers provide capabilities like thermal bonding, self-bulking, very fine fibers, and use of special polymers at reduced cost. Common polymer combinations include polyester core with copolyester or polyethylene sheath. Major applications are in nonwovens as bonding fibers.
Polymer fibres
This document discusses different types of polymer fibers and their production methods. It begins by describing extrusion as a common way to shape polymers into fibers through a die. Two main fiber production methods are then covered: melt spinning, where fibers are extruded from a melt through a spinneret, and wet spinning, where polymers are extruded from a solution. Specific high-strength fibers are also summarized like Kevlar, polyethylene, and carbon fibers produced from polyacrylonitrile. The document aims to explain how polymer structure impacts fiber properties at the macro and microscale.
Man made fiber spinning
This document summarizes man-made fiber spinning technology. There are three main types of spinning - melt, dry, and wet spinning. Melt spinning involves melting the polymer and extruding it through spinnerets. Dry spinning uses a volatile solvent to dissolve the polymer before extrusion. Wet spinning extrudes the polymer solution into a coagulating bath. Each method has advantages and disadvantages related to investment cost, hazard level, heat requirement, and production speed. The document also discusses properties required for fiber-forming polymers and the basic spinning system components like spinnerets.
Water filter
Water filtration is the process of removing or reducing the concentration of particulate matter, including suspended particles, parasites, bacteria, algae, viruses, and fungi, as well as other undesirable chemical and biological contaminants from contaminated water to produce safe and clean water for a specific purpose
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garments---Effect of blent ratio on quality of polyester/cotton yarns
Textile manufacturing and fabric processing (fiber to fabric)
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Man made fibre presentation from basic to higher level
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1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
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2、国（境）学习人员提供就业推荐信服务
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一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份毕业证【Q微信741003700】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【Q微信741003700】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
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1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
【关于价格问题（保证一手价格）】
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
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留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
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【业务选择办理准则】
一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份就读学校的毕业证【微信176555708】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【微信176555708】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
留信网服务项目：
1、留学生专业人才库服务（留信分析）
2、国（境）学习人员提供就业推荐信服务
3、留学人员区块链存储服务
→ 【关于价格问题（保证一手价格）】
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
选择实体注册公司办理，更放心，更安全！我们的承诺：客户在留信官方认证查询网站查询到认证通过结果后付款，不成功不收费！
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本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问微bwp0011
【主营项目】
一.毕业证【微bwp0011】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【微bwp0011】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理阿卡迪亚大学毕业证（uvic毕业证）本科文凭证书原版一模一样
原版一模一样【微信：741003700 】【阿卡迪亚大学毕业证（uvic毕业证）本科文凭证书】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
A Guide to a Winning Interview June 2024
This webinar is an in-depth review of the interview process. Preparation is a key element to acing an interview. Learn the best approaches from the initial phone screen to the face-to-face meeting with the hiring manager. You will hear great answers to several standard questions, including the dreaded “Tell Me About Yourself”.
一比一原版布拉德福德大学毕业证（bradford毕业证）如何办理
一模一样【微信：A575476】【布拉德福德大学毕业证（bradford毕业证）成绩单Offer】【微信：A575476】（留信学历认证永久存档查询）采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
【业务选择办理准则】
一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份就读学校的毕业证【微信：A575476】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【微信：A575476】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
→ 【关于价格问题（保证一手价格）
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
Connect to Grow: The power of building networks
In the intricate tapestry of life, connections serve as the vibrant threads that weave together opportunities, experiences, and growth. Whether in personal or professional spheres, the ability to forge meaningful connections opens doors to a multitude of possibilities, propelling individuals toward success and fulfillment.
Eirini is an HR professional with strong passion for technology and semiconductors industry in particular. She started her career as a software recruiter in 2012, and developed an interest for business development, talent enablement and innovation which later got her setting up the concept of Software Community Management in ASML, and to Developer Relations today. She holds a bachelor degree in Lifelong Learning and an MBA specialised in Strategic Human Resources Management. She is a world citizen, having grown up in Greece, she studied and kickstarted her career in The Netherlands and can currently be found in Santa Clara, CA.
体育博彩论坛-十大体育博彩论坛-体育博彩论坛|【网址🎉ac55.net🎉】
在体育博彩论坛，你会发现数之不尽的在线博彩机会，包括世界各地的精彩体育赛事以及绝佳的赔率。此外，体育博彩论坛还会为你提供诸如赌场、宾果和扑克等在线游戏以及各种各样的奖金优惠，包括体育博彩论坛的免费投注。无论你是忠实的足球迷，或者是二十一点的专业玩家，在这里都可以找到你最感兴趣的投注市场或游戏。
一比一原版(EUR毕业证)鹿特丹伊拉斯姆斯大学毕业证如何办理
原件一模一样【微信：95270640】【鹿特丹伊拉斯姆斯大学毕业证EUR学位证成绩单】【微信：95270640】（留信学历认证永久存档查询）采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
【业务选择办理准则】
一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份就读学校的毕业证【微信：95270640】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【微信：95270640】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份【微信：95270640】
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
→ 【关于价格问题（保证一手价格）
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
办理鹿特丹伊拉斯姆斯大学毕业证毕业证offerEUR学位证【微信：95270640 】外观非常精致，由特殊纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理鹿特丹伊拉斯姆斯大学毕业证EUR学位证毕业证offer【微信：95270640 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理鹿特丹伊拉斯姆斯大学毕业证毕业证offerEUR学位证【微信：95270640 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理鹿特丹伊拉斯姆斯大学毕业证毕业证offerEUR学位证【微信：95270640 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
Learnings from Successful Jobs Searchers
Are you interested to know what actions help in a job search? This webinar is the summary of several individuals who discussed their job search journey for others to follow. You will learn there are common actions that helped them succeed in their quest for gainful employment.
在线制作加拿大萨省大学毕业证文凭证书实拍图原版一模一样
原版一模一样【微信：741003700 】【加拿大萨省大学毕业证文凭证书】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Community Skills Building Workshop | PMI Silver Spring Chapter | June 12, 2024
Community Skills Building Workshop | PMI Silver Spring Chapter | June 12, 2024Hector Del Castillo, CPM, CPMM
We recently hosted the much-anticipated Community Skill Builders Workshop during our June online meeting. This event was a culmination of six months of listening to your feedback and crafting solutions to better support your PMI journey. Here’s a look back at what happened and the exciting developments that emerged from our collaborative efforts.
A Gathering of Minds
We were thrilled to see a diverse group of attendees, including local certified PMI trainers and both new and experienced members eager to contribute their perspectives. The workshop was structured into three dynamic discussion sessions, each led by our dedicated membership advocates.
Key Takeaways and Future Directions
The insights and feedback gathered from these discussions were invaluable. Here are some of the key takeaways and the steps we are taking to address them:
• Enhanced Resource Accessibility: We are working on a new, user-friendly resource page that will make it easier for members to access training materials and real-world application guides.
• Structured Mentorship Program: Plans are underway to launch a mentorship program that will connect members with experienced professionals for guidance and support.
• Increased Networking Opportunities: Expect to see more frequent and varied networking events, both virtual and in-person, to help you build connections and foster a sense of community.
Moving Forward
We are committed to turning your feedback into actionable solutions that enhance your PMI journey. This workshop was just the beginning. By actively participating and sharing your experiences, you have helped shape the future of our Chapter’s offerings.
Thank you to everyone who attended and contributed to the success of the Community Skill Builders Workshop. Your engagement and enthusiasm are what make our Chapter strong and vibrant. Stay tuned for updates on the new initiatives and opportunities to get involved. Together, we are building a community that supports and empowers each other on our PMI journeys.
Stay connected, stay engaged, and let’s continue to grow together!
About PMI Silver Spring Chapter
We are a branch of the Project Management Institute. We offer a platform for project management professionals in Silver Spring, MD, and the DC/Baltimore metro area. Monthly meetings facilitate networking, knowledge sharing, and professional development. For more, visit pmissc.org.Recently uploaded (20)
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Community Skills Building Workshop | PMI Silver Spring Chapter | June 12, 2024
Community Skills Building Workshop | PMI Silver Spring Chapter | June 12, 2024
Polyester(man made fibres)
- 1. JAWAHAR LAL NEHRUGOVT. ENGINEERING COLLEGE SUNDERNAGAR distt.MANDI( H.P.) NAME:- RITISH RANA BRANCH:-TEXTILE ENGG. SUBJECT:- MANMADE FIBRES
- 3. Content Introduction of polyester fibre Forms of polyester Microscopic view Different structure and appearance of polyester Characteristics of polyester Manuracturing of polyester Properties of polyester Physical properties Chemical properties Thermal properties Page 1 Page 2-3 Page 4 Page 5-6 Page 7 Page 8-11 Page 12 Page 13 Page 14
- 4. POLYESTER Polyester fibres are formed from synthetic polymer , manufactured by the action of poly- functional acids with poly-function alcohol. The fibre forming polymer is a long linear polymer with repeating ester groups in its structure . Being an ester , it is made from an acid , benzene-1,4-dicarboxylic acid (terephthalic acid), and an alcohol, ethane-1,2-diol 1
- 5. FILAMENT STAPLE TOW FIBERFILL FORMS OF POLYESTER 2
- 6. FILAMENT FORM • Polyester form continuous in length, producing smooth-surfaced fabrics STAPLE FORM • Filament are cut to short , predetermined lengths. • Easier to blend with other fibres TOW • A form in which continuous filament are drawn loosely together FIBREFILL • The voluminious from used in the manufacture of pillows and outerwear 3
- 8. DIFFERENT STRUCTURE OF POLYESTER 5
- 9. STRUCTURE AND APPEARANCE COLOURLESS AND TRANSPARENT SMOOTH AND LUSTURE SHAPE AS WE REQUIRE SHINY GLASS ROD LIKE 6
- 10. CHARACTERISTICS OF POLYESTERSTRONG VERY DURABLE RESISTANT TO STRETCHING AND SHRINKING QUICK DRAWIMG WRINKLE RESISTANCE MILDEW RESISTANCE RETAINS ITS SHAPE GOOD FOR MAKING OUTDOOR CLOTHING EASILY WASHED 7
- 11. MANUFACTURING POLYESTER Preparation of raw material(DMT,ethylene,etc.) Mixing tank Polymerization in reactor(temp.-260-280degree c , time-3/6hr Polymer chips Melt spinning Polyester filament produced from spinnert holes( monofilament, multifilament) Drawing Reeling onto a package or texturization 8
- 12. MELT SPINNING POLYMER FROM CHIP 9
- 13. POLYMER SYSTEM Polyester fibre forming polymer is a long linear polymer and its degree of polymerization is 115 to 140 where molecular weight is around 20000. Important groups are –CH2,-CO,-OCO and held in polymer through by vander walls forces , H-Bond. Polyester polymer length is 120 to 150micrometer and 0.6micrometer thick. It is 65% to 85% crystalline . –OH, -COOH are the functional groups of polyester. 10
- 14. Macro Structure Of Polyester LENGTH:-Its can be made in both staple and filament form. Fibre Diameter:-12 to 25micrometer Length width ratio:-2000:1 Appearance:-smooth Cross section:-generally have round cross section but may be triangle ,oval and rectangle shaped Colour:-generally white 11
- 15. PHYSICAL PROPERTIES OF POLYESTER Specific gravity:- 1.38 Moisture regain:-0 to 0.4% at standard condition due to having extremely crystallinity and lack of polarity. Tenacity( dry/wet):-7-8gm/denier for high tenacity filament,4.5-5.5gm/denier for normal tenacity filament,3.5-4gm/denier for staple fibres Elongation:-8-11%for high tenacity,15-30%for medium tenacity,25-45%for staple fibre Bending recovery:-Good Resiliency:-very good Abrasion resistance:-not good.Abrasion resistance of normal polyester is less than that high tenacity one. 12
- 16. CHEMICAL PROPERTIES POLYESTER Effects of moisture:-polyester absorbs only a very small amount of amount of moisture and tenacity and elongation are unaffected by moisture Effect of bleaches:- Not effected by oxidizing and reducing bleaches Effect of acid:- Polyester fibres are highly resistance to material and organic acids. Weak acid can not effected on them on even on boiling. Strong material such as H2SO4 can only hydrolyze them on boiling for hours together. Effect of alkali:- polyester is very much resistant to alkalis.Only strong hot alkalis result in a slow thinning of the diameter by sponification Effect of organic solvents:- resistant to all dry cleaning solvents. Dye ability:- disperse dye and some pigments can be used for coloration. Effect of sunlight:- Have good resistance to sunlight becomes weak when expose in sunlight for long time. 13
- 17. THERMAL PROPERTIES OF POLYESTER Polyester fibre is the most thermally stable synthetic fibre.If heat setting is not done properly then shrinkage occurs. At high temp. polyester melts and burns Softening temp.:-69degree c. Melting temp.:-250-265 degree c. Sticking temp.:-230-240 degree c. Ironing temp.:-135 degree c. 14