The Main Points Of The Color Electrostatic Flocking Process (1)
1.The dyeing method with sublimation
1.The dyeing method with sublimation
The dyeing method with sublimation is depend on the dye sublimation being heat and becoming gas. The gas spreads and dyes to fluff fiber with affinity. This method is to add dye sublimation in the adhesives of flocking. When the adhesives are used on the base fabric in the flocking process, the dye will be painted on the base fabric too. After the flocking baking, solidifying and dyeing will be finished at the same time. The dyes will come from the adhesives for gas and sublimation, and then the dyes will transfer to the fluffs.
The technological process of the dyeing flocked fabric is:
Brushing the flocking-glue with the dyes on the base fabric------flocking-----drying------baking------dyeing
The points of the process:
(1)Select the dyes with good sublimation performance in high temperature. All kinds of dyes should have the approximate performance of sublimation when they are put the colors together.
(2)The dyes should have the affinity for the fluffs which is higher than the affinity for the base fabric or adhesives, etc.
(3)Choose a colorless fluffs. After the baking, the dyes will show the normal colors and the fiber will get the bright color.
(4)If use the colored fluffs and put the colors together by the spelling color principle of flocking, such as the pulp of the base fabric dye is blue and the fluffs are yellow, after the baking, the fluffs will become the green color.
(5)For the choice of the base fabric is very important too. If the base fabric is cotton cloth, the fabric will not be dyed and just get the colors by the sublimation dyes. Most of the colors will be dyed on the fluffs, that will make the fluffs be with deep, rich and gaudy colors; If the base fabric is polyester fabric, the fluffs and the base fabric will be dyed by the dye, so the color of the fluffs will be less and light.
(6)Most of the devices of the screen printing enterprise can be used, so that can reduce the investing of the capital.
2.The method of thermal transferring
This method is to implant the colorless fluffs on the whole area of the fabric, and then use the dispersed dyes for the thermal transferring. The basic production method of transfer printing is to make the suitable dyes display the colors fist, and then let them print into the paper flowers, after that, let the paper flowers and the flocked fabric be together to heat, add the pressure or reduce pressure. The dyes which are on the pattern of the paper will sublimate into gas and transfer to the fluffs. The necessary papers can be bought on the market or be printed by yourself.
The process of flock printing or the printed leather:
Implanting the colorless fluffy on the whole base fabric------drying------printing and transferring the printed paper-------putting the base fabric and the printed paper together-------heating and adding the pressure------uncovered printing paper-------printing completely
The points of the process:
(1)Using the nylon or polyester fluffs will get the best effect.
(2)Selecting molecular weight of the transferring printed should not be more than 350. Commonly, the suitable weight is between 250 to 270. Moreover, all sublimation point of the different kinds of dyes, the function of transferring and diffusion should be closed, because that meets the requirements of the production.
(3)Transferring printing paper requirements are: having the enough strength; staying more than 30 seconds on 220 high temperature; the surface is bright, clean and without the dirt. The gas dyes must be with the low affinity to the paper.
by:lycamila
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