A. New synthetic fiber pre-treatment processing requirements
The pre-treatment processing is to determine the product key to the quality of the new synthetic fabrics. Usually pre-treatment processing of the new synthetic fiber tend to include desizing, Decorative Flags For Garden scouring relaxation, pre-shaped, alkali reduction (or splitting), and several other process. Sizing new synthetic compound oil of mineral oil, grease of oil, wax, and the new synthetic structure, large surface area, sizing or oiling rate and buildup of force is greatly increased, thereby increasing the desizing difficult. So, the desizing when to choose to go to the grease to wax sex, the desizing strong and a good wash effect refining additives better. Clearly, the new synthetic fiber desizing remove oil, desizing should mainly the role of surfactants as additives to the alkaline agent. Decorative Flags For Garden Beach Warning Flags For Sale
Higher refining relaxation process conditions to make a new synthetic fabric effectively shrink and was a good fluffy. The residual fat should be in the process of refining relaxation rate of less than 0.2%, Decorative Flags For Garden and to prevent further contamination. In this process, the new synthetic fiber shrinkage varies with temperature sensitivity is much stronger than conventional polyester, solid this be a good grasp of the relationship between heat treatment temperature and fiber shrinkage. Often the fabric from the beginning of low temperature, slow heating to its full contraction, or part of the fiber contraction uneven, will have wrinkles, gloss unevenness and high temperature setting affect quality. For new synthetic Overtwisted fabric should be taken to the low temperature relaxation treatment. Of course, the different requirements of the new synthetic fabric, should be adjusted accordingly scouring relaxation process. New synthetic fiber scouring relaxation should be a phased opening of the first continuous relaxation on the pre-relaxation, then overflow dyeing machine relaxation. Advertising Feather Flags
Pre-shaped, not only can improve the dimensional stability, Decorative Flags For Garden eliminating the analysis of marks, but also help to improve the reduction and dyeing uniformity.
Alkali reduction not only make the fiber thinning, but also to improve the drape of the fabric, moisture absorption and softness, and show the style of the new synthetic fabrics. Custom Made Wind Flags But the new synthetic materials and traditional products, the reduction rate is therefore different requirements, if handled badly, it will cause the differences in the rate of reduction to make a strong decline in the fabric is treated to elongation.
Microfiber (fiber) base reduction, in fact, with traditional polyester silk, Decorative Flags For Garden as its main splitting, and thus the general reduction rate was controlled at 1% to 2% can be, but its control and production difficulties. The actual production, and some do not use alkali ways to reduce the splitting agent and by sanding, Beach Flags For Sale sand to achieve the purpose of splitting, but also by alkali reduction supplement splitting. Splitting alkali Reduction Act, must not allow the alkali reduction increases. Splitting the two-component polyester / nylon fiber, the reduction rate does not exceed 5%, Swooper Feather Flags Wholesale but must ensure that the splitting, generally splitting rate of 80% is fully open to the fiber. It is noteworthy that new synthetic alkaline hydrolysis rate is faster than conventional polyester, and the hydrolysis rate of new synthetic, and therefore must pay attention to the fast hydrolysis of the components of the new synthetic fiber caused by a strong decline in over-the same time, bending and shear The cut features will also be reduced, Decorative Flags For Garden affecting the body bone and toughness of the fabric. As a result, the new synthetic reduction control requirements than conventional polyester strict and difficult to process.
The first treatment process should be as much as possible to keep the slack or tension-free conditions.
Two. Pre-treatment process
(1) desizing, scouring relaxation process under the new synthetic fiber sizing situation, Backpack Banner Price first need to choose a suitable desizing agent. The alkaline agent is the main component of the desizing agent need to adjust the pH value, and then depending on the slurry, adding different alkali agent. Desizing in addition to the alkali addition to, and often add non-ionic surfactant penetration and emulsifier, the cloud point can not be too low. Taking into account the characteristics of the new synthetic fiber, often choose the alkali, the permeability of the emulsifying and diffusion of the high temperature the mixture of good anionic and nonionic surfactants. Desizing temperature is usually in the 80 ~