Wednesday, August 17, 2016

Denim production in Bangladesh & importance

Denim is a sturdy cotton warp-faced textile in which the weft passes under two or more warp threads. This twill weaving produces a diagonal ribbing that distinguishes it from cotton duck. The most common denim is indigo denim, in which the warp thread is dyed, while the weft thread is left white.


Denim is a sturdy cotton warp-faced textile in which the weft passes under two or more warp threads. This twill weaving produces a diagonal ribbing that distinguishes it from cotton duck. The most common denim is indigodenim, in which the warp thread is dyed, while the weft thread is left white.


Image of Denim Fabric


HISTORY
In the 1800’s American gold miners wanted clothes that were strong and did not tear easily.They made one kind of fabric that commonly known as jeans.The 1930’s Cowboys often wore jeans in the movies. This made jeans become very popular, as you know how much of an influence clothing in the movies has on every day wear.During the 1940’s The second World War started then all most maximum country of the world weaving production was stop. American weaving production was not stopped. After the war, rival companies began to compete business and share of the international market.

In the 1950’s Denim became very popular with young people.      

In the 1960’s and 70’s manufacturers started to make different styles of jeans to match the 60’s fashions which included embroidered jeans, painted jeans, psychedelic jeans etc, these were a huge part of the fashion and culture. In the 1980’s jeans became a very high fashion clothing. Famous fashion designers like Gucci started making jeans, with their own labels on them.


Flow Chart of Denim Production:

Spinning 
      ↓ 
Bale Warping 
      ↓ 
Rope Dyeing 
      ↓ 
Long Chain Beaming 
      ↓ 
   Sizing 
      ↓ 
   Weaving 
      ↓ 
Finishing 
    ↓ 
Inspection & Folding 
    ↓ 
 Packing 
    ↓ 
 Dispatch


Types of Denim are given below: 


1. Dry Denim
2. Selvage Denim
3. Stretch Denim
4. Poly Denim
5. Ramie Cotton Denim

a. DRY DENIM:
Dry or raw denim, as opposed to washed denim, is a denim fabric that is not washed after being dyed during its production. Most denim is washed after being crafted into an article of clothing in order to make it softer and to eliminate any shrinkage which could cause an item to not fit after the owner washes it. In addition to being washed, nondry denim is sometimes artificially "distressed" to achieve a worn-in look. Much of the appeal of dry denim lies in the fact that with time the fabric will fade in a manner similar to factory distressed denim. 

                      Image of Dry Denim
           
b) Selvage denim
Selvage denim (also called selvage denim) is a type of denim which forms a clean natural edge that does not unravel. It is commonly presented in the unwashed or raw state. Typically, the selvage edges will be located along the out seam of the pants, making it visible when cuffs are worn. Although selvage denim is not completely synonymous with unwashed denim, the presence of selvage typically implies that the denim used is a higher quality. The word "selvage" comes from the phrase "self edge" and denotes denim made on old-style shuttle looms. These looms weave fabric with one continuous cross thread (the weft) that is passed back and forth all the way down the length of the bolt. As the weft loops back into the edge of the denim it creates this “self-edge” or Selvage. Selvage is desirable because the edge can’t fray like lower grade denims that have separate wefts which leave an open edge that must be stitched. 

                        
                                                                         Selvage denim

c) stretch Denim
It is usually about 98% cotton and 2% Spandex for a bit of that forgiving stretch we all love. This blend gives you wonderful ease of movement and at the same time some support for those “trouble spots” you aren’t so fond of around the hips or thighs. Stretch denim jeans are one of the fastest growing segments of the women’s market for jeans manufacturers.



Stretch Denim


d) Poly denim
It is the blends that appeal to those who like the look of denim but prefer polyester blends that wash and dry quickly and are lighter weight and a bit dressier. These usually appeal to a slightly older market, but are also finding favor for pantsuits, etc. when the look is meant to be “dressy but casual.”


Poly Denim
e) Ramie Cotton Denim
It is the blends that are found in a variety of combinations, with a wide price variance. Ramie is a plant fiber usually added because it reduces wrinkling and adds a silky luster to the fabric. It isn’t as strong as cotton, however, so it has to be blended with this stronger material in order to stand up as a denim material.
                             
  
                     Image of Ramie Cotton Denim


Properties of Denim Fabric:

1. Denim fabric creases easily.
2. It is very strong and durable.
3. It is feeling hard during wearing.
4. It is used for long time wearing.
5. It resists tears and snags.


Types of Denim Fabric:

There are mainly eight types of denim fabric, those are
1. Colored denim,
2. Bubble gum denim,
3. Denim from fox fiber,
4. Crushed denim,
5. Vintage denim,
6. Ecru denim,
7. Marble denim,
8. Reverse denim.


All the above denim fabric types are discussed in the below:


1. Colored denim:
Colored denim fabrics are woven, manufacturing with dyed yarn either warp or weft. This kind of fabric can be obtained by piece dyeing process

2. Bubble gum denim:
Bubble gum denim fabric is lycra containing denim, that has between 35 to 50% lycra or stretch.

3. Denim from fox fiber:
This kind of denim fabric is manufactured by colored cotton fiber that grows naturally developed and patented by California cotton breeder sally fox.

4. Crushed denim:
In Crushed denim fabrics, textured effect achieved through a special fabric construction coupled with wet processing, where the effect can also be improved by using stone and bleach. This kind of denim fabric is woven with an over twist weft yarn.

For achieving old and worn outlook, a denim treatment that applies heavy stone wash or a cellulose enzyme wash with bleach or without bleach is called vintage denim.

Ecru denim fabric is that, which is not having any dyed yarn, contains only grey yarn in warp and weft.

Marble denim has another name is acid wash. If the fabric is strongly bleached then it is called marble denim.

Reverse denim fabric is that, where the face side and reverse side look alike.

Denim Production Process - Part 1 : Yarn Spinning

CONCLUSION
Jeans have become one of the most worn pieces of clothing in the world. Everybody wears them, from the rural farmer to the urban; lawyer and from models to housewives. Jeans is very popular because it is became softer as it got older. They were dyed with indigo because it did not go through the cloth like other dyes do.At first jeans were worn only by workers, especially in factories. In the eastern part of the US jeans were hardly worn at all. They were associated with rural people and the working class. But when rich easterners went on holidays to escape everyday life they often put on jeans.













1 comment:

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