阅读说明：本技术 一种粗纺四面弹面料的后整理工艺 (After-finishing process of woolen four-side elastic fabric ) 是由 吴栋标 于 2020-05-27 设计创作，主要内容包括：本发明公开了一种粗纺四面弹面料的后整理工艺,包括依次进行的坯布准备→预定型→低弹性处理→皂洗→缝边→缩呢→检验→定型→剪毛→蒸呢→检验、包装；所述低弹性处理包括将坯布依次通过甲酸熏蒸、体积百分比为0.1-1％的醋酸水溶液喷洒浸润、超声处理、等离子处理、碱处理,其中醋酸溶液与坯布的重量比为0.1-1:5。通过该整理工艺整理的羊毛混纺弹性面料收缩一致均匀不易起皱；面料表面绒毛密而均匀,具有良好的弹性稳定性和保暖性。(The invention discloses a post-finishing process of a woolen four-side elastic fabric, which comprises the steps of preparing gray fabric → presetting → low elasticity processing → soaping → sewing edge → shrinkage → inspection → shaping → shearing → decating → inspection and packaging which are carried out in sequence; the low elasticity treatment comprises the steps of fumigating the grey cloth by formic acid, spraying and infiltrating acetic acid aqueous solution with the volume percentage of 0.1-1%, carrying out ultrasonic treatment, carrying out plasma treatment and carrying out alkali treatment in sequence, wherein the weight ratio of the acetic acid solution to the grey cloth is 0.1-1: 5. The wool blended elastic fabric finished by the finishing process has uniform shrinkage and is not easy to wrinkle; the surface fluff of the fabric is dense and uniform, and the fabric has good elastic stability and heat retention.)

1. An after-finishing process of a woolen four-side elastic fabric is characterized by comprising the steps of preparing gray fabric → presetting → low elasticity processing → soaping → sewing edge → felting → inspecting → sizing → shearing → decating → inspecting and packaging in sequence; the low elasticity treatment comprises the steps of fumigating the grey cloth by formic acid, spraying and infiltrating acetic acid aqueous solution with the volume percentage of 0.1-1%, carrying out ultrasonic treatment, carrying out plasma treatment and carrying out alkali treatment in sequence, wherein the weight ratio of the acetic acid solution to the grey cloth is 0.1-1: 5.

2. The finishing process of the woolen four-side elastic fabric according to claim 1, wherein the formic acid fumigation process comprises heating formic acid to 110-120 ℃, fumigating the sealed space for 30-40min, and condensing and refluxing the fumigated formic acid for recycling.

3. The finishing process of the woolen four-side elastic fabric according to claim 2, wherein the plasma treatment process is that the gray fabric is unfolded and straightly passes through a plasma reaction chamber for 1-10min, the vacuum degree is 30-40pa, and the power is 50-100 w.

4. The post-finishing process of the roved four-side elastic fabric according to claim 3, wherein the alkali treatment process is to place the grey fabric in a closed ammonia gas chamber at normal temperature for 10-20min in a cold heaping manner.

5. The finishing process of the woolen four-sided elastic fabric according to claim 4, characterized by further comprising cleaning the grey fabric, dehydrating and spraying deionized water for soaking before the cold piling of the ammonia gas chamber, wherein the weight ratio of the deionized water to the grey fabric is 1-2: 5.

6. The finishing process of the woolen four-side elastic fabric according to claim 5, wherein the pre-shaping comprises baking and shaping under the conditions that the temperature is 180-190 ℃ and the vehicle speed is 10-15 m/min.

7. The post-finishing process of the slubbed four-side elastic fabric according to claim 6, wherein the specific conditions of the decating are that the steam pressure is 0.5-0.6MPa, the internal and external air release is 60-120s, the external and internal air release is 90-120s, and the cooling time is 90-150 s.

Technical Field

The invention relates to the technical field of fabric after-finishing, in particular to an after-finishing process of a woolen four-side elastic fabric.

Background

The woolen wool four-side stretch fabric is generally woven by blending wool tops with elastic fibers such as wool, terylene and the like in the warp direction and the weft direction. The elasticity of fibers such as dacron is basically equal to that of wool fibers, after the wool blending elastic fabric containing the dacron fibers is subjected to high-temperature presetting, the dacron is bonded, the elasticity is reduced, but the elasticity of wool does not change after the presetting, so that the elastic shrinkage between the elastic fibers and the wool fibers in the wool blending elastic fabric is inconsistent, or the wool fibers draw the elastic fibers to move when shrinking, because the elastic fibers do not shrink independently, the shrinkage of the elastic fibers is not uniform, the surface unevenness of the fabric is caused, the wrinkles occur, and the appearance of the fabric is poor.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the after-finishing process of the woolen four-side elastic fabric, and the wool blended elastic fabric finished by the after-finishing process has uniform shrinkage and is not easy to wrinkle; the surface fluff of the fabric is dense and uniform, and the fabric has good elastic stability and heat retention.

In order to achieve the purpose, the technical scheme of the invention is to design an after-finishing process of a woolen four-side stretch fabric, which comprises the steps of preparing gray fabric → presetting → low elasticity processing → soaping → hemming → milling → inspection → sizing → shearing → decating → inspection and packaging which are carried out in sequence; the low elasticity treatment comprises the steps of fumigating the grey cloth by formic acid, spraying and infiltrating acetic acid aqueous solution with the volume percentage of 0.1-1%, carrying out ultrasonic treatment, carrying out plasma treatment and carrying out alkali treatment in sequence, wherein the weight ratio of the acetic acid solution to the grey cloth is 0.1-1: 5.

According to the method, the grey cloth is subjected to formic acid fumigation and acetic acid solution ultrasonic treatment to enable cells of a primary cortical layer and a secondary cortical layer to be subjected to rotary distortion, so that a spiral shape with the primary cortical layer and the secondary cortical layer arranged alternately is formed on the surface of a wool fiber in the length direction, part of cells of the primary cortical layer and part of cells of the secondary cortical layer are partially hidden due to the rotation of the cortical layer, and the amount of the primary cortical layer is larger than that of the secondary cortical layer, so that a large amount of cells of the primary cortical layer are hidden and a large amount of cells of the secondary cortical layer are exposed in the rotary distortion process, and the cells of the secondary cortical layer with lower content are etched and lost more and the content of the cells of the secondary cortical layer is reduced through plasma etching treatment, and the plus material is subjected to alkali treatment to enable the primary cortical layer to expand and turn to the outer side; the elasticity of the wool fibers is reduced due to the reduction of the cell content of the accessory cortex layer, and the elasticity of the wool fibers and the elasticity of the elastic fibers damaged by high-temperature setting tend to be consistent again, so that the fabric is not easy to wrinkle after low-elasticity treatment; meanwhile, the wave width of the bending wave of the wool fiber with reduced elasticity is increased, and the fulling property of the wool fiber is further increased, so that the low-elasticity treatment is arranged before the fulling process, so that the wool blended elastic fabric is compact in fluff, enhanced in heat retention, attractive in appearance, and thick and soft in hand feeling.

The preferred technical scheme is that the formic acid fumigation process comprises the steps of heating the formic acid to 110-120 ℃, fumigating the sealed space for 30-40min, and condensing and refluxing the fumigated formic acid for recycling. Formic acid fumigation is carried out in a sealed space, so that the using amount of formic acid is reduced; formic acid is condensed and refluxed, and the formic acid is repeatedly recovered, and the concentration of the formic acid is maintained.

The further preferable technical scheme is that the plasma treatment process comprises the steps of unfolding the grey cloth, treating the grey cloth in a plasma reaction chamber for 1-10min in a straight way, wherein the vacuum degree is 30-40pa, and the power is 50-100 w.

The further preferable technical scheme is that the alkali treatment process comprises the steps of placing the grey cloth cold stack in a closed ammonia gas cavity at normal temperature, and fumigating for 5-10 min. And weak alkali treatment of ammonia gas cold heaps is adopted, so that the corrosion and loss of alkali treatment on cortical cells are reduced, and the reduction of the stability and durability of the wool fibers is avoided.

The further preferable technical scheme is that the method further comprises the steps of cleaning the grey cloth, dehydrating and spraying deionized water for soaking before the cold batch of the ammonia gas chamber, wherein the weight ratio of the deionized water to the grey cloth is 1-2: 5. The grey cloth is cleaned before the ammonia gas cold batch treatment, deionized water is sprayed and soaked, the ammonia gas is combined with the deionized water on the grey cloth to form ammonia water, the ammonia gas can be intercepted on the surface and inside of the fabric to the maximum extent, the ammonia water is fully contacted with the fabric, the alkali treatment efficiency is improved, and the treatment time is shortened.

The further preferable technical scheme is that the pre-shaping comprises baking and shaping under the conditions that the temperature is 180-190 ℃ and the vehicle speed is 10-15 m/min.

The specific conditions of the decating are that the steam pressure is 0.5-0.6Mpa, the inside and outside air release is 60-120s, the outside and inside air release is 90-120s, and the cooling time is 90-150 s.

The invention has the advantages and beneficial effects that: the wool blended elastic fabric finished by the finishing process has uniform shrinkage and is not easy to wrinkle; the surface fluff of the fabric is dense and uniform, and the fabric has good elastic stability and heat retention. According to the invention, the grey cloth is subjected to formic acid fumigation and acetic acid solution ultrasonic treatment, cells of a primary cortex layer and a secondary cortex layer are subjected to rotational distortion, so that a spiral shape with the primary cortex layer and the secondary cortex layer arranged alternately is formed on the surface of wool fibers in the length direction, and the content of the cells of the secondary cortex layer is reduced through plasma etching treatment; meanwhile, the wave width of the bending wave of the wool fibers with reduced elasticity is increased, and the fulling property of the wool fibers is further increased, so that the low-elasticity treatment is arranged before the fulling process, so that the wool blended elastic fabric is compact in fluff, enhanced in heat retention, attractive in appearance and thick and soft in hand feeling; and weak alkali treatment of ammonia gas cold heaps is adopted, so that the corrosion and loss of alkali treatment on cortical cells are reduced, and the reduction of the stability and durability of the wool fibers is avoided.

Detailed Description

The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.