There are two main methods of fabric printing and dyeing, one is traditional paint printing and dyeing, and the other is reactive printing and dyeing which is opposite to paint printing and dyeing.
Reactive printing and dyeing means that under certain conditions, the active gene of the dye combines with the fiber molecules, the dye penetrates into the fabric, and the dye and the fabric react chemically to form a whole body. ; Paint printing is a printing and dyeing method in which dyes are physically combined with fabrics through adhesives.
The difference between reactive printing and dyeing and paint printing and dyeing is that the hand feeling of reactive printing and dyeing is smooth and soft. A common saying is that the fabric of reactive printing and dyeing looks like mercerized cotton. Look at the printing and dyeing from both positive and negative aspects. The effects are very good; while the paint-dyed fabric feels stiff and looks a bit like an ink painting effect.
1. Characteristics of paint printing and dyeing
The process is simple and the cost is low. The color fastness is poor, and it gets old after washing; the environmental performance is poor, and the formaldehyde content is higher than that of reactive printing and dyeing; the printed part is sticky, and it appears hard without adding softener. If softener is added, the formaldehyde content will be higher.
2. Characteristics of reactive printing and dyeing
Good breathability and fastness It has excellent strength and soft hand feel, but there are also problems such as cumbersome printing process, long process and difficult processing. Generally, reactive printing and dyeing can ensure that it is environmentally friendly and harmless to people. The color and fabric feel are also better, and there is no hard or soft feeling.
3. Identification method
Color identification: The color of paint printing is not Bright and dim colors give people the feeling that the colors are floating on the cloth. It’s like a coat of paint on the wall.
Look at the gloss: Pigment-printed fabrics go through a “calendaring” process before leaving the factory, so you see a shiny feeling on the cloth surface. It may be pigment printing. This process The smooth finish obtained by calendering is one-time and will disappear after washing.
Smell: Pigment printing adds a lot of adhesives and is directly shaped without being washed, so the finished fabric will have a strong smell.
Feel: Pigment printing feels hard. In order to cover this shortcoming, fabric manufacturers add softeners during shaping, and the finished product will feel softer after being “calendered”. Most of it will fall off after washing. </p
