Pretreatment

What is Pretreatment?

Textile Pre-treatment, considered to be a series of cleaning operations starting from the raw state of fiber, and lays the foundation for the quality in textile processing.

Importance of Pretreatment

Pre-treatment have same importance as coloration and finishing of textile materials, about 60%-70% faults that appears in processing unit are due to inadequate pre-treatment process.

Objectives of Pretreatment

The main objective of textiles Pre-treatment is to produce a clean and absorbent cloth or to pass the textile materials by standard procedure; so that, it may brought to the state; which can be dyed or printed and finished without any hurdle and displaying any kind of faults.

1. Complete removal of all kinds of Impurities

2. Removal of all Projecting/Protruding fibers (Fibers hanging on fabric surface due to spinning of carded yarn)

3. To get uniform absorbency(pick up) throughout the fabric

4. To get maximum whiteness

5. To have minimum damage of fibers constituting fabric.

6. To neutralize pH of the fabric, necessary for further process.

7. To remove Natural impurities (Fats, natural pigments, mineral substances and seed particles).

8. To remove Artificial impurities (Sizes, mineral oils, fungus, rust and coloring materials)

Pretreatment:

The sequences of process starting from inspection of gray fabric to mercerization is called pretreatment.

Objective of pretreatment:

· To get uniform absorbency(pick up) throughout the fabric
· To get maximum whiteness
To remove Protruding or floating fibers (fibers hanging up on fiber surface)
To remove all kind of impurities completely
· To have minimum damage to fabric
· To neutralize the pH of the fabric that is necessary for further process
· To make fabric ready for dyeing and printing.

Mechanics of materials by Beer Johnston

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Mechanics of materials by Beer Johnston

Terms for garments and parts A-B

1. Accordian pleats

Narrow, straight pleats usually parallel to one another.

2. Back-strap

Strap across the back of a garment at the waist, usually fitted with a buckle, or other method of adjustable fastening, and used to adjust the fit of the garment, within limits, to the wearer's requirement.

3. Bearers (for trousers)

Sections fastened to the side seams to take the weight of the trousers when the fronts are opened. Bearers for whole fall trousers contain the pockets. Bilston bearers similar to whole falls but with deeper bearer.

Pocket bearers are employed for cross pockets.

French bearers are a continuation of the button catch & fly with two or more holes fastened on to a strap from the side seams.

4. Belt loop

A loop of material or thread, which is sewn into the waist of the garment. The degree of fit is adjustable by means of a belt drawn through the loops.

5. Bespoke

Bespoke clothes are those which are made to the order of an individual.

6. Bodice

The section of a woman's garment covering the body from neck to waist.

7. Box pleat

A form of enclosed pleats achieved by double folding cloth alternately in opposite directions.

8. Break

The point where the bridle ends at the centre front of a coat, it is usually at the top buttonhole.

9. Buggy

A lining from the neck down across the back of anotherwise unlined coat.

10. Button stand

The distance from the finished edge of the garment to the centre of the button.

The hole through which a button is passed to hold the garment in the correct position.

12. Buttonhole stand

The distance from the finished edge of the garment to the eye of the buttonhole.