You are here:Home>News>Accessories


Sandwich staining

Published on:2013/5/6 16:24:59

Keyword:Printing, fabric
Introduction:The so-called sandwich-staining, that is, the thickness of the fabric, the difference given a special agents (concentrated stain resist agent)

 The so-called sandwich-staining, that is, the thickness of the fabric, the difference given a special agents (concentrated stain resist agent), to the inner and outer layers of the fabric in the dyeing method of dyeing the difference appears. If you say it more clearly, it is like from both sides of the absorbent sponge gently pressurized appear dry on the surface while the interior is in a state containing water. This will cause the differential adsorption of Pharmacy, this state is rapidly fixed, such staining, due to the balance of the pharmaceutical type in the fiber surface and internal therefore produce dye stain difference.

In recent years, semi-finished products have been bleached for dyeing processing, often fabric Shihlin dye decolorization after several hours, in order to improve its texture, and the Movement of white fluffy surface. But the processing time is very long, often require 5-10 hours. Sandwich dyeing rule is developed to generate a sense of bleach in a short time. And thereby printing a combination, it may prominent color change processing.
Sandwich staining method of processing the pursuit of monochrome shades, and sandwich processing and printing processing rule of thumb is to make the color bleach tune, use of cationized that the depth of processing, anti-pollution, and then overprint, made prominent bleaching sense of commodity.
The process is particularly suitable for pile fabrics such as velveteen, corduroy, emery pile fabric irregularity tissue and high-density fabric. Such as color dyed fabric dyeing coloring sandwich, you can give the two-color flash.
Sandwich staining process: pre-treatment (padding) → drying → baking → staining (impregnation method, continuous dyeing or printing) → washing → soaping → washing → drying.
Sandwich processing and printing process: pre-treatment (padding) → drying → baking → printing → baking → staining (impregnation method, continuous method) or printing (printing 100 ° C steaming 10min) → washing → soaping → washing → drying.
Sandwich dyeing and sandwich processing and printing a combination of fabric pre-treatment by the anti-pharmaceutical agent (such as the ARO-mafix GP, Aromafix MG), concentrated dye (such as Aromafix PV-7, Aromafix PV-8), the cross-linking agent (such as aromafix K-8, above all Japan Ming-Cheng Chemical Co., Ltd.) composition. The amount and combination of a sense of the type of material to be dyed, the organization and the pursuit of bleaching. Examples are as follows: pretreatment: Aromafix PV-30g / L, the Aromafix GP 30g / L, ARO-mafix K-8 10g / L.
Sandwich staining processing, or processing method of combining with the sandwich processing and printing. Dip dyeing method, for example, the prescription is:
Reactive dyes (fabric) 2%
Sodium Sulfate 50 g / L
Soda ash 20 g / L
Dyemol EC-9 2 g / L
Bath ratio 1:10
Temperature ° C 60-70
Time (min) 60
And then washed with water, soap, washing, drying. Sandwich processing and printing combined, for example, padding (pick up 70% -90%), drying (100-120 ° C) fabric printed pattern object, stain blocking processing, white anti-pollution, coloring resist or combine them for dyeing (exhaust dyeing, continuous dyeing or printing).
The dye-barrier method of printing paste in the following prescription: 50 g of baking soda and water 550 g of sodium alginate (5%) 400 g. Process: printing, drying, curing (160-170 ° C for 3 min), washed with water, soap (the net lotion g / L, the 90 ℃ 10min2-) washing, drying after dyeing.
Fabric processing with the dye-barrier method, the printing portion Movement unprocessed state, it is possible to generate the differential shades. Combined with a variety of pattern, may give rise to similar cation style. Cation disadvantage is: washing the dye tarnished, so white, processing difficulties, but this approach, white, does not tarnish.
As for the dip, continuous dyeing, printed fabric, solid color showed deeply stained, then white anti-pollution stain blocking method. Deep, medium and light colors on the dye.