Types of Natural Dyes

Natural dyes can be sorted into three categories: natural dyes obtained from plants (Indigo), those obtained from animals (cochineal), and those obtained from minerals (ocher). Although some fabrics such as silk and wool can be colored simply by being dipped in the dye, others such as cotton require a mordant.

A mordant is an element, which aids the chemical reaction that takes place between the dye and the fiber so that the dye is absorbed. Containers used for dying must be non-reactive (enamel, stainless steel.) brass, copper or iron pots will do their own mordanting. Not all dyes need mordants, such as lichens and walnut hulls, they are called substantive dyes. If they do need a mordant, they are called adjective dyes.

DYES APPLIED TO FIBER CLASSES

Dyes for Cellulosic Fibers

Cellulosic fibers can be dyed readily using a number of dye classes. The less crystalline regenerated cellulosic (rayon) dye more readily than the more crystalline natural cellulosic fibers such as cotton. Cellulosic can be dyed or printed using direct, reactive, basic, vat, sulfur, or azoic dyes.

Cellulosic can also be colored using pigment-binder systems. Mordanting of direct and basic dyes on cellulosic improves overall fastness. Since the hydroxyl groups in cellulosic are less reactive than many functional groups found in protein fibers, reactive dyes such as the dichlorotriazine (Procion M) or dichloroquinoxaline (Levefix) dyes are often used on cellulosic fibers due to their higher reactivity.

Objectives of implementing TQM in textile factories?

To reduce work in process ( WIP) : 

Work in process means a material that has entered in production process but is not yet a finished product . It is necessary to reduce work process for maintain total quality management that’s why management get output of entered product as soon as possible within required time.

To maintain Critical Path Method ( CPM) : 

Critical path method means how any work or production is complete in accurate but short way by considering all the quality and other factors of production . Management must be walk out by using CPM.

To reduce wastage  : 

Wastage is a common factor for any production . In textile sector , costing of a product is calculated smaller then smallest  . How much you can reduce wastage , you will save more costing which is profitable for company . so that it is necessary to reduce wastage

Apparel Glossary of Terms

A guide to the terminology used in the description of various apparel.

Written By,

Nurul Amin Jibon

IE Executive (Mohammadi Group)

B.Sc In Textile Engineer

Primeasia University. Batch: 091

1x1 Rib Also 2x2 rib knit trim. The width of each rib is the same as the width between each rib. This helps the garment retain its elasticity.

2-Way Zipper A zipper with two zipper pulls so that it can be unzipped from either direction.

All-Weather Microfiber 100% Polyester Microfiber with waterproof coating and fully taped seams. 100% waterproof.

Anti-Pill A treatment applied to garments primarily to resist the formation of little balls on the fabric’s surface due to abrasion during wear.

Appliqué Decoration or trimming cut from one fabric piece and stitched to another to add dimension.

Argyle Typically a diamond pattern woven into a garment.

Baby Pique Very small pique knit. See Pique Knit.

Back Pleats Tiny folds in the material on the back of a garment that allow for more room and comfort.

Back Yoke A piece of fabric that connects the back of a garment to the shoulders. This allows the

What Is Production Study? Importance & Procedure of Production Study?

What Is Production Study? Importance & Procedure of Production Study?

Written By,

Nurul Amin Jibon

IE Executive (Mohammadi Group)

B.Sc In Textile Engineer

Primeasia University. Batch: 091

Phone No : 01687-201045

Production study

The second stage of work measurement is the production study that is a very powerful and effective technique of work measurement. It is easy technique to determine the fact about effective or non-effective time that how it is effective or non-effective as well as the causes of their activities. It shows the real picture of work that can be segregated the time feature of every element and their

Some Interview Question in Bangla

১.প্রথম আবিস্কার করা ন্যাচারাল ফাইবার এর নাম কি?
উত্তর: wool ফাইবার।

২.প্রথম আবিস্কার করা crop ফাইবার এর নাম কি? 
উত্তর : ফ্লাক্স ফাইবার

৩.প্রথম আবিস্কার করা সিননথেটিক অথবা মেন মেইড ফাইবার এর নাম কি?
উত্তর: পলি এমাইড ফাইবার। Nylon Fibre.

৪.সকল ফাইবারের কিং বলা হয় কোন ফাইবার কে?
উত্তর: কটন ফাইবার Cotton

৫.কোন ফাইবার কে ফাইবারের রাণী বলা হয়?  
উত্তর: সিল্ক ফাইবার Silk

৬.ডিসপোজাল গার্মেন্টস কি? 
উত্তর: এক বার ব্যবহার করা গার্মেন্টস কে বলা হয়।

৭.ফাইবার ফিজিকেলী কত প্রকার?

What is Cycle Time? How to Checking Cycle Time? Importance & Procedure of Cycle Checking?

What is Cycle Time? How to Checking Cycle Time? Importance & Procedure of Cycle Checking?

Written By,

Nurul Amin Jibon

IE Executive (Mohammadi Group)

B.Sc In Textile Engineer

Primeasia University. Batch: 091

Phone No : 01687-201045

Cycle Time

To check how many an operator can produce in one hour.

Cycle check

Cycle check means to check the time of a specific operation or element from starting point to ending point. An operator has to perform an operation or some of operations within an allocated time that is called a cycle and every cycle have to be repeated continue for his/her duty hours.

Cycle checking area

1.         Individual operation or group of operations performing area

2.         Individual worker or group of workers working area.

What Is IE/Work Study Procedure?

What Is IE/Work Study Procedure?

Writing By,

Nurul Amin Jibon

IE Executive (Mohammadi Group)

B.Sc In Textile Engineer

Primeasia University. Batch: 091

Phone No : 01687-201045

Work-study is a systematic job procedure. There are many objects to be studied systematically to carry out the most economical result. The procedure will be continued step by step for view. Let’s see the below:-

Select: Select the task to be studied.

Record: Record or collect all relevant data about the task or process, using the most suitable data

Characteristics & Basic Function of Work Study/Industrial Engineer?

Characteristics & Basic Function of Work Study/Industrial Engineer?

Writing By,

Nurul Amin Jibon

IE Executive (Mohammadi Group)

B.Sc In Textile Engineer

Primeasia University. Batch: 091

Phone No : 01687-201045

A work Study Engineer needs to be educated, expert, smart, confident, personal dignity and honest. Details bellow-

Education

Good secondary education with an aptitude for matriculation, formal education in engineering disciplines preferred.

Practical Experience

It is desirable that candidates for posts as work-study specialists should have had practical experience in the industries in which they will be working. This experience should include a period of working within one or more of the processes within our industry.

Personal Qualities

Sincerity and Honesty

The work-study person must be sincere and honest only if this is the case will he or she gain the

How silk is made & properties

Silk - the most beautiful of all textile fibers is acclaimed as the queen of textiles. Silk  comes from the cocoon of the silk worm and requires a great deal of handling and processing, which makes silk  one of the most expensive fibers also. Today China is the leading silk producer of the world. Other major silk producing countries include Japan, India,Bangladesh and Italy. Now I will discuss about Silk such as :-   Production of Silk  Characteristics of Silk  Identifying of Silk  Four Varieties of Natural Silk