Padding is defined

The  fabric is dyed in a bath after a brief immersion, then rolled with a  roller , squeeze the dye textiles in the tissue spaces , to remove  excess dye and the dye is uniformly distributed on the fabric. The  dye is ( or mostly ) such as steaming or baking in the future , such as  the completion of the process , the fabric is immersed in the dye in  general only a few seconds to tens of seconds, with the padding on the  fabric dye ( usually called rolling over rate , dry cloth weight in percentage terms ) is not much, between 30 % to 100 %. ( About 30% synthetic fiber , 65% to about 70% cotton , 90% rayon ) . Padding is continuous dyeing , dyed fabric tension suffered large  scale is commonly used fabric dyeing machine , higher labor  productivity.

Dyeing machines use

Generally  uses continuous dyeing machine, continuous dyeing machine machine  composed by a number of units , there are rolling cart ( padding device )  , solid -color , flat wash , drying , steaming and other cell devices. Various dyes due to the different conditions of the dyeing process and thus a variety of pad machines . Vat dyes such as suspension padding machines, continuous dyeing  machine insoluble azo dyes , soluble vat dyes continuous dyeing  machines.

Requirements  for rolling car : mangle requires uniform, front, rear, left, right  uniform with liquid ratio requirements currently rolling cart is ideal  uniform rolling car , which rolled the car at both ends of the roll with  compression. air  pressure in the oil pump pressure inside the roll , by adjusting the  amplitude of the pressure on the whole the same , easy to cause the  fabric edge and intermediate shades of flaws. Padders  a pair of rolls are soft rolls , padding generally have a dip of a  rolling, rolling several forms of a second dip , Second Baptist Baptist  or a second rolling mill , etc., as the case fabrics, equipment , dyes,  etc. may be. Fabric thickness , permeability is poor, the amount of dye is high, appropriate to a dip a roll . When  padding fabric with liquid rate generally should be lower, rolling over  is high, the drying process to produce swimming shift ( refers to the  process of dip dyeing fabric in the dye solution with water movement and  movement phenomenon also known as free ) situation more serious , easy to produce uneven dyeing . Moisture content of the fabric at a certain value or less (e.g., 30%  cotton , 25% polyester ) is not significant shift of the TC .

Infrared drying device drying , hot air drying , drying cylinder drying . In  the infrared drying process, while the fabric surface and internal  heat, drying evenly, dye fabric moves from inside to swim fewer surface .  Hot  air drying temperature is not too high, or likely to cause uneven drying  , especially ran over dip dye fabric , just enter the hot room even  more. In order to  improve drying speed , hot air drying machine can be divided into  several rooms , and gradually raise the temperature. Drying  cylinder drying fabric is affixed to the inside of a metal cylinder  with a steam heating surface , evaporation of moisture on the fabric ,  high drying efficiency. However,  due to the drying cylinder wall thickness inconsistencies and  differences in the degree of surface smoothness , the direct use of high  temperature drying cylinder drying, dip dyeing fabric can easily cause  uneven and dye solution after bathing and drying shift , thus beginning a  few drying cylinder temperatures should  be lower , to be baked to a certain temperature and humidity and then  make contact with the fabric of high drying cylinder . In actual production , the drying of the three ways is often used in combination .
Dye fixing pad manipulation methods are generally steaming , baking two kinds. Steaming is carried out in the steaming box. Steaming  is the use of water vapor so that the fabric temperature rises, fiber  swelling , dyes or dye and chemical effects after diffusion into the  interior of the fiber and the fiber fixation . Baking is a dry hot air as the heat transfer medium temperature of the fabric , dye diffusion into the fiber and fixed .

Then washed with water or steam curing , after soaping treatment according to different requirements , etc. .