What is the pretreatment before digital printing of textiles?
Digital textile printing machine is a process of direct jetting pattern printing on fabrics using digital technology. It has the advantages of high efficiency, low cost and environmental protection, and is widely used in textile production. Some fabrics need a series of pretreatments before digital printing. The purpose of pretreatment is to remove natural impurities contained in the fiber and the slurry and oil applied during textile processing, so that the fiber can give full play to its excellent quality and make the fabric white, soft and breathable, meeting the requirements. We also provide qualified semi-finished products for dyeing, printing and finishing. The following is the pretreatment before digital printing of textiles:
1. Inspection and cleaning
Before using the Boyin digital printing machine, the textiles must be thoroughly inspected to ensure that there are no defects such as stains, damage, uneven texture, etc. In addition, the textiles need to be cleaned to remove oil, dust and other impurities that may affect the printing effect.
2. Pre-shrinking
In order to prevent dimensional changes caused by shrinkage after textile printing, pre-shrinking is required. Most of the shrinkage can be removed in advance by soaking the textile in hot water or steam treatment.
3. Desizing treatment
Desizing refers to the removal of sizing from textiles, which is often used in the weaving process to enhance the strength and stability of the yarn. Desizing helps ensure better penetration of the ink into the fiber, improving the quality and durability of the print.
4. Bleaching treatment
For prints that require a particularly white background, the textile may need to be bleached. Bleaching removes the natural pigments in the textile and provides a uniform white background for digital printing.
5. Softening treatment Softening
The treatment improves the feel and softness of the textile, which is essential for improving the comfort of the final product. Softeners can be chemical agents or natural materials such as lanolin or vegetable oils.
6. Use pretreatment
Pretreatment liquid is usually used to improve the adhesion of ink to textiles. It can be water-based or solvent-based, depending on the type of ink used and the material of the textile. Boyin digital printing pretreatment agent can improve the feel of the textile, improve color brightness and pattern clarity.
7. Drying treatment
The textile may undergo multiple wetting and drying processes during the pretreatment steps. It is very important to ensure that the textile is completely dry before printing to avoid uneven ink penetration or overly bright colors.
Through these pretreatment steps, the quality and efficiency of digital printing can be greatly improved, while reducing waste and errors in production. Yisheng digital printing pre-treatment agent can improve the clarity of textile patterns, the vividness of colors and the softness, and the product is also environmentally friendly.