Introduction Of Basic Finishing Process For Common Sweaters

< p > < strong > 1. The matching of sweater < /strong > < /p >.

< p > Velour sexy and < strong > a href= "http://www.91se91.com/" > pink < /a > /strong > lovely, comfortable and warm, this kind of collocation is indeed bright.

Tall girls wear not only the bloated winter, but also the extraordinary temperament.

Matching a bright and eye-catching leather bag, fashion 100%.

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< p > black is always the main color of fashion.

It is the pronoun of elegance and elegance.

Black Plush coat, leather black satchel, with a pair of shoulder flat ground < a target= "_blank" href= "http://www.91se91.com/" > shoes < /a >.

Bright colors make the whole collocation look more bright.

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Less than P, the fluffy coat with loose and comfortable features is very innovative with the lovely robot T-shirt and the wave dot red skirt.

It gives people a cute and lovely feeling, and the black short boots are more elongated.

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Less than P, the fluffy coat with loose and comfortable features is very innovative with the lovely robot T-shirt and the wave dot red skirt.

It gives people a cute and lovely feeling, and the black short boots are more elongated.

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The white plush coat gives a sense of elegance to P.

Black < strong > a href= "http://www.91se91.com/" > bottom shirt "/a > /strong" and dark colored slim jeans are also unable to resist the charming figure in winter.

The length of the plush coat is very important. The length of this coat can better decorate the figure and make people look taller.

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< p > the combination of plush and woolen makes the coat more designed and layered.

Walking in the street is definitely a single product with a turnover rate of 100%.

The most popular envelopes and boots now make the whole collocation bright.

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< p > < strong > two. Sweater technology introduction < /strong > < /p >

< p > (1), basic finishing process < /p >

< p > 1. drawing (stentering) < /p >

< p > stretching is the process of making use of cellulose, silk, wool and other fibers in moist condition with < strong > a href= "http://www.91se91.com/" > plasticity < /a > /strong >, and gradually widening the fabric width to the required size and drying, so as to stabilize the fabric shape, so it is also called finishing.

Fabric processing before finishing, such as scouring and bleaching, printing and dyeing process, is often subjected to meridional tension, forcing the fabric to warp lengthwise, weft shrinkage, and produce other shortcomings, such as uneven width, uneven edges, rough handle, flat aurora and so on.

In order to make the fabric have a uniform stable door width, and at the same time, it can improve the above shortcomings and reduce the deformation of the fabric in the process of wearing, the general fabric needs to be stretched by finishing after dyeing and finishing.

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< p > 2. preshrinking (pre Shrinking) < /p >

< p > shrinkage is the process of reducing shrinkage by soaking in water by physical means.

In the process of weaving, dyeing and finishing, the fabric will undergo tension and the buckling wave height of the warp will decrease.

When the hydrophilic fiber fabric soaked and soaked, the fibers swelled, and the diameter of warp and weft yarns increased, so that the warp buckling wave height increased, the fabric length shortened, and the shrinkage decreased.

When the fabric is dried, the swelling disappears, but the friction between the yarns still keeps the fabric in a state of shrinkage.

The mechanical shrinkage is to wet the fabric by spraying steam or spray first, then by mechanical extrusion, so that the buckling wave height increases and then loosely dried.

After shrinking, the shrinkage of cotton cloth can be reduced to less than 1%, and the softness of fabric will also be improved due to the extrusion and rubbing between fibers and yarns.

Wool fabric can be loosed and pretreated, and the fabric can be slowly dried in loose state after warm water impregnated or steam injected, so that the warp and weft of fabric can be contracted.

Fabric shrinkage is also related to its organization.

Shrinkage of fabrics is usually assessed by shrinkage.

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< p > 3. anti wrinkle (CreaSe - reSiSting) < /p >

< p > change the original composition and structure of fiber, improve its resilience, so that wrinkle resistant finishing process is not easy to wrinkle.

It is mainly used for pure spinning or mixing of cellulose fiber < a target= "_blank" href= "http://www.91se91.com/" > textile > /a > substances, also can be used for silk fabrics.

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< p > the development of wrinkle resistant finishing can be roughly divided into three stages: 1) before the mid 1950s, from the middle of 1950s to the middle of 60s, the United States began producing non durable cotton fabric, which had good crease resistance in dry and wet condition.

Many new finishing agents have also appeared during this period.

3) after the mid 1960s, durable press finishing was developed.

Most of the finished products are polyester and cotton blended fabrics. After pressing, they can heat the synthetic fibers, so they can be kept flat and pleat.

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< p > fabric wrinkle finishing, the recovery performance increased, some strength and serviceability improved.

For example, the wrinkle resistance and dimensional stability of cotton fabrics have been improved obviously. The quick drying and drying properties can also be improved. Although the strength and wear resistance will decrease to varying degrees, it will not affect the wearing performance under normal technological conditions.

Besides the obvious improvement of crease resistance, viscose fabric has a slight increase in fracture strength, especially in wet fracture strength.

But wrinkle resistant finishing has some effect on other related properties, such as fabric elongation at break to varying degrees. Washing resistance is different from finishing agent. The washing fastness of dyed products is improved, but some finishing agents will reduce the fastness of some dyes.

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< p > 4. heat setting (heat Setting) < /p >

< p > heat setting is a relatively stable process for making thermoplastic fibers and their blended or interwoven fabrics relatively stable. It is mainly used for the processing of synthetic fibers and their blended fabrics, which are easy to shrink or shrink after heat.

The fabric of thermoplastic fiber will produce internal stress in the process of weaving, and it will be prone to wrinkle and deformation under the influence of moisture, heat and external force in dyeing and finishing process.

Therefore, in production (especially wet heat processing, such as dyeing or printing), it is usually treated in a tensile state at a slightly higher temperature than that in subsequent processes, i.e., < strong < a href= "http://www.91se91.com/" > heat setting < /a > /strong >, to prevent fabric shrinkage and deformation, so as to facilitate the later processing.

In addition, yarns such as stretch yarn (silk), low elastic yarn (yarn) and bulked yarn can be made by using heat setting technology and combining with other physical or mechanical functions.

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In addition to improving the dimensional stability, other properties of P fabrics have been changed, such as wet resilience and pilling properties, and the handle is relatively stiff. The elongation at break of thermoplastic fibers decreases with the increase of heat setting tension, while the strength varies little. If the setting temperature is too high, both of them will decrease significantly.

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< p > (two), appearance style finishing process < /p >

< p > 1. whitening (whitening) < /p >

< p > the process of increasing the whiteness of textile by using the complementary principle of light is called whitening finishing, also known as adding white.

Bleached textiles still contain light yellow substances, and strengthening bleaching will damage fibers.

The whitening agent can make the blue and yellow complement, and improve the whiteness of the textiles without damage to the fibers.

There are two ways to whiten up: blue and fluorescent.

The former uses pale blue dyes or pigments to bleach the fabric to offset yellow. Due to increased absorption of light, the brightness of the fabric will be somewhat reduced and slightly darker.

The fluorescent whitening agent is an organic compound which is close to five colors. When it is dyed to fabric, it is stimulated by ultraviolet rays to produce blue and purple fluorescence. With the reflection of Huang Guangxiang, the whiteness and brightness of the fabric are increased, and the effect is better than that of the upper blue.

Fluorescent whitening can also be carried out in combination with bleaching, sizing or wrinkle resistant finishing < strong > a href= "http://www.91se91.com/" > Bath < /a > /strong >.

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< p > 2. calendering (Calendering) < /p >

< p > calendering finishing is to improve the fabric luster by using the plasticity of the fiber under the condition of damp and hot to roll or parallel the fine lines.

The calender is composed of several hard rolls and soft rollers with smooth surface.

Hard rollers are metal rollers with highly polished surfaces or dense parallel lines, often with heating devices.

After a combination of more and soft rollers, the yarn is flatten, the surface is smooth, the gloss is enhanced, and the feel is tough. It is called leveling.

After the fabric is rolled and pressed by two soft rollers, the yarn wins slightly, the luster is soft, the hands are soft and the B is soft calendering.

Different luster roll combinations and pressure, temperature and wearing mode can give different luster.

Calender finishing is mechanical treatment, and its fabric luster effect is poor. If the fabric first impregnated with the resin and then pre baked, it will get a more durable luster after calendering.

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< p > 3. stripe (embOSSing) < /p >

< p > by using the plasticity of fiber, the process of rolling the fabric with a pair of hard, soft, concave and convex rollers with a certain depth pattern at a certain temperature and making it produce concave and convex pattern effect is called finishing, also known as embossing finishing.

After dyeing or printing, cotton or polyester / cotton blended fabrics can be used to stretch the resin working fluid in the finishing process, thus forming a durable grain effect.

After dyeing and printing, synthetic fabrics can be directly striped.

Using the copper roller with concave grain as the hard roll and the surface high elastic rubber roller as the soft roll pressing and pressing fabric, it is called "flower".

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< p > 4. grinding and polishing (Sanding) < /p >

< p > the process of grinding a short and dense fuzz on the surface of the fabric with a sand roller (or belt) is called finish finishing, also known as < strong > a href= "http://www.91se91.com/" > finishing finish < /a > /strong >.

The wool fabric has the characteristics of thick, soft and warm, which can improve the wearability of the fabric.

Textured suede or high shrinkage polyester knitted fabric or machine (shuttle) fabric can be made into suede fabric after it is ground.

The base cloth made of superfine synthetic fiber can be used to obtain artificial suede with simulation effect after rolling polyurethane emulsion and sanding.

The effect of finishing (or finishing) is similar to that of fuzzing (or napping), which is to create fuzz on the fabric surface.

The difference is that fuzz finishing is usually made of metal card clothing (woolen cloth is also used for bur), mainly the weft fuzz of the fabric, and its hair is sparse and long.

The finishing can make the warp and weft yarn at the same time to produce the villi, and the villi are short and dense.

In order to control the strength drop of the fabric, the quality of the finished fabric is mainly determined by the density and uniformity of the fuzz.

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