Production method of formaldehyde-free non-ironing shirt

Abstract

The invention relates to a production method of a formaldehyde-free non-ironing shirt. The production process is as follows: spraying of finishing liquid, drying, stereoscopic molding, shaping of a drying tunnel, and dehumidifying and dampening, wherein the drying temperature is set to be 80 DEG C to 90 DEG C, and the humidity is controlled to be 30-50%; in the stereoscopic molding step, a stereoscopic combined type press process is adopted, the temperature is controlled to be 140 DEG C to 160 DEG C the time is controlled to be 1-2min, and force of 6-10 kg/cm<2> is applied; and in the step of shaping of the drying tunnel, the design of circular blowing and heat insulation as well as a band-type drying tunnel of a ternary-form gradually-heated system are adopted, the shaping temperature of different segments is set to be 110 DEG C to 140 DEG C, 130 DEG C to 160 DEG C and 150 DEG C to180 DEG C, and the total shaping time is 3-6min. The non-ironing shirt produced by the invention is free from formaldehyde and belongs to a real formaldehyde-free non-ironing shirt, the production process flow is short, the process control is simple, the production reproducibility is good, and the product quality is stable.

Description

technical field [0001] The invention relates to a post-production method of shirts, in particular to a production method of formaldehyde-free non-ironing shirts. Background technique [0002] With the continuous improvement of the social and economic level, more and more functional textiles are familiar and accepted by people. Among them, the non-ironing shirts, which have become increasingly popular in recent years, are easy to wear because of their crisp and tangible shape and no need to iron after washing. The performance advantage of nursing has been favored by the majority of consumers, but the non-ironing shirts currently produced on the market, no matter whether they are non-ironing fabrics or non-ironing garments, the resin crosslinking agent used in the production process is mostly formaldehyde. As the initial raw material, it is synthesized with urea, cyclic urea, carbamate or other amides, such as UF resin, MF resin, and DMEU resin. These finishing agents are modi...

AI Technical Summary

Problems solved by technology

[0005] (1) The production process has a large span, involving many different fields such as fabric weaving, finishing, and garment sewing. The process control is difficult, the reproducibility is poor, and the stability of industrial production of products is poor.

[0006] (2) The technical process of padding finishing solution after garment making mentioned in its patent is difficult to produce garment padding, and it is impossible to ensure uniform liquid retention rate in different parts, especially multi-layer and single-layer fabrics. Uneven non-ironing effect and obvious local color differences. At the same time, the three technological processes mentioned in the patent all adopt the padding feeding method. The utilization rate of the finishing liquid is low, the waste is large, and the cost of additives is high. Pollution of the environment in the later discharge

[0007] (3) The high-temperature baking process at 170-185°C is easy to produce color changes for light-colored and white varieties, which affects product quality. At the same time, it consumes a lot of energy and consumes a lot of energy, which is not conducive to energy saving and emission reduction

[0008] (4) The patent does not mention the pleat appearance and seam appearance grades in the non-ironing performance of the product, and the necessary performance measurement indicators are missing. At the same time, the most critical zero-formaldehyde crosslinking resin in the patent does not specify the specific name and main components, which affect latecomers' research on its performance and related industries, and are not conducive to the promotion of formaldehyde-free non-ironing technology

Although the appearance of the non-ironing shirts produced by this process method meets or exceeds the requirements of national standards, the production process has the following defects (1) Although the multifunctional resin finishing agent used has been modified However, due to the incomplete modification and alkylation treatment, the finishing solution still contains N methylol compounds, and formaldehyde can still be released after alkaline hydrolysis. It is not a formaldehyde-free non-ironing shirt.

[0010] (2) The pre-drying temperature is as low as 50-70°C, which is not suitable for drying large quantities of shirts, and the drying efficiency is low, which cannot meet the needs of industrial production

[0011] (3) Independent pressing method is used to press different parts of the shirt separately. There are many production processes, long assembly line design, many equipment and personnel required, large space occupation, many intermediate links, long circulation time, and product output ratio low production efficiency

[0012] (4) After the baking is completed, it needs to be ventilated and cooled for 4-6 hours before subsequent processing. The dehumidification and cooling time is long, the circulation speed is slow, and the production efficiency is low.