Introduction of jigger dyeing

Jigger dyeing, a method of dyeing fabrics performed on a jigger. The fabric is wound onto one spool of the jigger and fed through the dyebath to the other spool. After rolling, repeat the process in reverse order until the fabric is evenly dyed in the desired color. It is an intermittent production method, suitable for small batch production of many varieties. The basic working process is to repeatedly pass the fabric of a certain length and width through the dye solution of a certain concentration and temperature, and complete a certain number of back and forth movements according to the process requirements, so that the dye can be dyed on the fabric. Therefore, the process of jigger-dyed products is simple.

Structure and working principle

The working principle of the jigger consists of two rollers with the same geometrical size, including a fabric take-up roller and a fabric release roller, drive the fabric to dry reciprocally in the liquor tank until the process requirements are met. As the movement of the jigger progresses, the diameter of the cloth winding roller gradually increases. The diameter of the cloth release roller gradually decreases. In order to achieve a constant linear speed when drying the fabrics, the speed of the fabric winding roller must be gradually reduced and the fabric winding roller adjusted steplessly.

The constant line speed adjustment of the fabric has undergone various forms of speed regulation, such as purely mechanical differential mechanism, hydraulic motor speed regulation, winding motorand a DC motor. Although the DC motor has the advantages of large starting torque and wide speed range, the windings are easy to burn out in high temperature and high humidity environments. In addition, slip rings and electric brushes also need regular maintenance, the DC speed control system and computer interface are more problematic, and it is also more difficult to realize automatic control.

A: fabric roll B: fabric roll c: motor D: motor E: gear F: gear G, H guide roller M : Dyeing liquor tank V: Wiring speed

According to the requirements of the jigging dyeing process, the jigging tension F of the fabric is constant. For this reason, the functional characteristic of the jigger is that it has two identical engines C, D, via twoi identical gears, drive A, B, two rollers with identical diameters. The fabric is dip-dyed in the dyeing vat of roll B by fabric guide rolls C and H and then rolled onto roll A. At this time, motor C is in the motoring state while motor D is in the towing state. And make sure that the fabric keeps a certain tension F during the dyeing process. Runs in forward direction until All fabrics are dyed on roll A, the motor brakes, stops and reverses by the electric automatic control system. The fabric is then dip dyed from roll A through the dye vat and then rolled onto roll B, and this cycle repeats until the requirements are met. The design of the electric automatic control system is done according to this process requirement.

Jigger Dyeing Process

1. Check the jigger fabric: check the quality of the fabric, check the structure of the fabric, check theColor of the fabric, check whether the fabric is stained, check the width and thickness of the fabric, and the drying requirements of the fabric.

2 Pre-treatment: According to the quality and drying requirements of B. Soaking, alkali washing, Chlorine washing etc. to prepare the fabric for dyeing.

3. Dyeing with the jigger: Put the preserved fabric in the jigger and add dyes, and dye according to the dyeing needs.

4.PPrinting and Dyeing: Put the dyed fabric into the printing and dyeing machine, add printing and coloring agents, and do the printing and coloring according to the coloring requirements.

5. Finishing: Put the printed and dyed fabric into the finishing machine, add finishing agent and finish according to the drying requirements.

6. Check and Report: Check the drying effect, report the drying effectand determine the drying quality.

There are some precautions you should take into account:

Chemicals: The dyes must be fully agitated and dissolved in the chemical tanks before they can be added to the machine tank, otherwise, color stains may appear on the fabric surface. Temperature: It must be covered and kept warm to keep the temperature of the liquid above and below the liquid in the cylinder constant. Heating up: When adding steam to increase the temperature, the cloth roller cannot be operated, otherwise the temperature difference between the front and back will lead to color difference Head and tail: Before operation, make sure that the temperature of the cloth roller roller is not much different from the temperature under the liquid differs. In winter, it is necessary to prevent the cloth roller from getting too cold so that the cloth layer comes into contact with the rollerchilled Let it raise the temperature. The function and advantages of the jigger dyeing machine

The role of the jigger in the dyeing process is undeniable. From ancient times to the present, there have been constant references to new technologies. The jigger, commonly known as the dye vat, is an early open-width dyeing machine. It greatly improves the efficiency of drying fabrics, shortens the working time, and improves the business benefits. It is suitable for dyeing fabrics with direct dyes, reactive dyes, vat dyes, etc. Sulfur dyes; It can also be used for desizing, degreasing, bleaching, washing and finishing.

Because of its simple structure, flexible operation, convenient maintenance, low investment cost and ideal application, it is particularly suitable for processing and production of multi-type and small series. Compared to continuous dyeing, jigger dyeing always applies noch as the dyeing process with the best quality. Although it was used earlier, the number of users has not decreased so far, it has been developed and improved in recent years. The current dye tank is made of stainless steel and the gearbox has been changed from a linkage to an independent drive to allow the gray fabric to be wound up at a constant linear speed. The most attractive is the advent of large dyeing machines with microcomputers. These new developments not only increase the size of the fabric rolls, but also the whole process is controlled by microcomputer programs and the dyeing quality is very stable.

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