Laboratory Winch Dyeing Machine

Laboratory Winch Dyeing Machine real Speed :	35-50 r.p.m. at 50 Hz or Variable Speed Control
Winch Dyeing Machine Door:	Two doors, one each at front end back
Guidsloller:	Detachable type with 3 guide bars
Heat Soruces:	Internal heating system
Material:	Stainless steel
Goods to be handled:	Woven and knit goods of various kind
Processing capacity: Weaight:	Min. 3 Kg or above
Max-working Temperature:	98 C and higher
Vapor pressure:	3-5 Kg/crr2 or higher

Natural Dyes:

After spinning process it is necessary to select the dyes. Read about Woven Fabric Jigger Machine

Dyed yarn sorting:

We know carpet is a colorful thing. It is mainly used for floor coverings. It is increases the beauty of home and official also.

Objective of Dyed yarn sorting:

• To makes separate bundle of yarn according to cloth.
• To helpful for knotting.

Winch Dyeing MachineProcedure:

• After dyeing and drying the yarn.
• Then it is sorting into a beam.
• It is sorting by hand.

Washing and Wash Rug Drying:

After knotting a full carpet actually made. Then it is needs to be wash. After wash it will be ready for next process.

Objective of Washing and Wash Rug Drying:

• To remove impurities is from carpet.
• To increase lusture of carpet.
• To make soft handle.

Procedure:

• First we haveto lay the carpet in the field.
• Then it is have to fall water on the surface of carpet.
• Then wash the carpet by brush.
• Then have to dry the carpet by sunlight.

Dyeing Related Defects/Problems

Uneven Appearance and Blotchiness-

Definition and Causes:

There are many factors that could cause these conditions. The following are the most common causes:

uneven exhaustion of dyes (disperse and acid dyes)

uneven absorption of dyes   (reactive and direct dyes)

incompatibility of dyes in the color formula

incorrect or incomplete preparation of the greige goods prior to dyeing

left-over and un-removed preparation chemicals prior to dyeing (Hydrogen Peroxide)

insufficient and improper use of Retarders/Leveling chemicals (in direct dyes)

incorrect fabric dwell time in the dye machine

high dye bath water hardness    

application of fixing chemicals in un-clean dye bath water

the use of high energy disperse dyes at low temperatures etc.

Preventive Suggestions:

Due to the complexity of the dyeing process, every technical aspect of dyes, chemicals and type of machineries, must be studied and taken in to consideration before any attempt is made to select a procedure to dye a fabric.

Corrective Measures:

Generally, and in less severe cases, removal and stripping the original color and re-dyeing the fabric may correct the problem. Although, total removal of the original color may weaken the fabric and thus special care is required.

In more severe cases, over-dyeing in to a darker shade or black may be the only solution.

Non-Union Dyeing (Cross-Dyeing)-

Definition and Causes:

This is a common problem with fabrics that are made with blended yarns where one component of the yarn appears to be of a different shade.

Preventive Suggestions:

In order to get an even and uniform (union) color, both fibers need to be dyed to the same color according to their percentage content.

This could be done by dyeing one component first followed by the other fiber. This is known as “2 bath dyeing “

The other way would be to dye both components simultaneously, which is referred to as

“1 bath dyeing”. This process is difficult and can not be performed for certain colors.

In either case care must be taken to ensure that complete dye uniformity is achieved.

Corrective Measures:

In most cases the non-union color can be corrected by making an appropriate dye addition.

Winch Dyeing Machine : It is, however, very important to make sure any softeners or other finishing chemicals that are on the fabric are thoroughly removed before the dye addition is made.