Bleached jersey process: drying fabric → alkali reduction → → sodium hypochlorite scouring bleaching → bleaching hydrogen peroxide → whitening → softening → Custom Made Decorative Flags dehydration →
Dyeing () process jersey: fabric → alkali reduction dyeing () → finishing → scouring → sodium hypochlorite bleach →
Cotton cloth process of dyeing (): → fabric scouring → sodium hypochlorite bleach → dyeing () → finishing
(1) alkali reduction alkali shrinking process of cotton knitted fabrics in the relaxed state, with a concentrated alkali solution. Alkali shrink the main purpose is to increase the density and elasticity of the fabric and improve the strength of the fabric and improve gloss and reduce shrinkage of the fabric. Maker Swooper Flags Completion of the alkali reduction process to go through three steps padding lye, piled contraction and washing the alkali. Cylindrical knitted fabric base shrinking machine by a consortium of machine to dip into the layout and alkali slot cars rolling, wash alkali slot, cloth storage boxes, drop-cloth device, as shown in Figure 1-11.
Figure 1-11 knitted alkaline reduction combination machine Custom Made Decorative Flags
1 – tune wrapped around the plate – support plate 3 – Cheap Decorative Garden Flags padder – Baptist alkali slot 5 – Baptist alkali heap cloth box
6 – stacked boxes – washing alkali slot – cloth storage box – drop cloth device
Alkali reduction process conditions: alkali concentration of NaOH 140 ~
Alkali reduction of the process are: the expansion rate of the seam → → padding → stacking of concentrated lye (or dipping in concentrated alkali solution) → go alkali → Swooper Feather Flags Wholesale hot water washing → cold water washing.
Knitted jersey alkali reduction dry cloth alkali reduction (shrinkage) and a damp cloth alkali reduction (wet reduction) methods. The shrinkage is scouring the knitted fabric to alkali reduction, wet shrink knitted fabric Xianzhu practice alkali shrink. The former process is simple, but the uneven fabric respiratory alkalosis, the latter respiratory alkalosis uniform, flexibility and luster, but the process is longer, the actual production of more than a dry cloth alkali reduction. Custom Made Decorative Flags
(2) The knitted fabric scouring the purpose of scouring is to remove the fabric on the cotton seed shell, cellulose impurities of the oil stained with a total of biological and weaving. Custom Printed Teardrop Flags Knitted fabric scouring cloth pot training and rope-like steam cooking practice can be used to cook. Whichever method is used, the conditions should be than the average cotton scouring ease, keeping more of the waxy substance on the cloth, so as not to affect the feel of the fabric and cause the sewing hole.
Knitted continuous steam cooking training process is as follows:
Knitted fabric after alkali reduction → padding cook training liquid → steaming → 60 ~
(3) bleached knitted fabric bleach can be used sodium hypochlorite, hydrogen peroxide and sodium chlorite bleach. The general effect of sodium hypochlorite bleach, and easy to damage the fiber, and have a greater impact on the environment, but its low cost, simple equipment, bleach is still widely used in cotton knits, has been gradually hydrogen peroxide replaced. Hydrogen peroxide bleaching effect, must go to miscellaneous small fiber damage, it not only applies to cotton, Custom Made Decorative Flags but also make other fibers to obtain a good bleaching effect, and therefore especially suitable for cotton and synthetic fiber blended fabric bleaching. Sodium chlorite is not only the bleaching effect, and fiber damage, the ability of it to the complex and wide adaptability to the fiber, is an ideal bleach. But its high cost, equipment corrosion, Custom Made Decorative Flags bleaching emit toxic gases, have a greater impact on the environment, therefore a very limited use. The bleaching process and conditions of the knitted fabric and generally cotton. Whiteness demanding products, but also the need for complex drift and fluorescent whitening treatment.