A finishing process for a fabric and the fabric itself.

Abstract

This invention discloses a finishing process for fabric and the fabric itself, comprising the following steps: Step a: performing a felting treatment on the fabric; Step b: performing a stretching and drying treatment on the fabric after the felting treatment in Step a; Step c: performing a steel wire raising treatment on the fabric after the stretching and drying treatment in Step b; Step d: performing a burr raising treatment on the fabric after the steel wire raising treatment in Step c; Step e: performing a reverse-nailing rinsing treatment on the fabric after the burr raising treatment in Step d; Step f: performing a drying treatment on the fabric after the reverse-nailing rinsing treatment in Step e; Step g: performing a dry brushing treatment on the fabric after the drying treatment in Step f; Step h: performing a calendering treatment on the fabric after the dry brushing treatment in Step g. The finishing process for fabric provided by this invention results in a fabric surface covered with a layer of long, naturally curly fibers, creating a fluffy, full, and soft luster.

Description

Technical Field

[0001] This invention relates to the field of fabric technology, specifically to a finishing process method for fabrics and a fabric itself. Background Technology

[0002] As we all know, animal fibers are the most precious among natural fibers. Their preciousness is mainly reflected in the fact that animal fibers are very fine, soft and delicate to the touch, and light and fluffy when in fiber form, with particularly good warmth retention. However, coarse spun fabrics processed with current technology have short and neat pile lying on the surface of the fabric. The surface pile is short and neat, the finished product feels tight and stiff, which makes most of the characteristics of animal fibers disappear. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, the present invention provides a post-processing method for fabrics and a fabric.

[0004] According to a first aspect of the present invention, a method for finishing fabrics is provided, comprising the following steps:

[0005] Step a: Fulling, perform fulling treatment on the fabric;

[0006] Step b: Stretching and drying, the fabric that has undergone fulling in step a is stretched and dried.

[0007] Step c: Steel wire raising, the fabric after stretching and drying in step b is subjected to steel wire raising treatment;

[0008] Step d: Prickly napping, the fabric that has been treated with steel wire napping in step c is subjected to prickly napping treatment.

[0009] Step e: Backwashing, the fabric that has been treated with thorns in step d is subjected to backwashing.

[0010] Step f: Drying, the fabric that has been rinsed against the nap in step e is dried.

[0011] Step g: Dry brushing, the fabric that has been dried in step f is subjected to dry brushing treatment;

[0012] Step h: Ironing and calendering, the fabric after dry brushing in step g is ironed and calendered.

[0013] In one embodiment of the present invention, the method further includes the following step prior to step a:

[0014] For the first wash, the fabric is placed in an soaking solution for cleaning, wherein the soaking solution includes a fluffing agent;

[0015] Dehydration: The fabric after the initial washing is dehydrated.

[0016] In one embodiment of the present invention, step a is followed by:

[0017] For the second wash, rinse the fabric that has undergone the fulling treatment with clean water.

[0018] In one embodiment of the present invention, step b is followed by:

[0019] Steaming is the process of steaming the fabric after it has been stretched and dried.

[0020] In one embodiment of the present invention, step c is followed by:

[0021] Impregnation involves impregnating the fabric after the steel wire has been napped.

[0022] In one embodiment of the present invention, step d is followed by:

[0023] Drying: The fabric after the prickly fruit napping treatment is dried.

[0024] Heat treatment: The dried fabric is heat treated.

[0025] In one embodiment of the present invention, step e is followed by:

[0026] Dehydration: The fabric that has been rinsed with water after being washed with reverse nap is dehydrated.

[0027] In one embodiment of the present invention, step g is followed by:

[0028] Pre-shrinking involves pre-shrinking the fabric after the dry brushing process.

[0029] In one embodiment of the present invention, the fabric is a weft-phase structure, and the weft portion accounts for at least 80% of the fabric.

[0030] According to a second aspect of the present invention, a fabric is provided, which is a fabric prepared by the above-described finishing process of the fabric.

[0031] The finishing process of the fabric provided by this invention allows the fibers to exhibit their inherent characteristics in the fabric, resulting in a fluffy, thick, naturally curly, soft luster, and a delicate, smooth feel.

[0032] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0033] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0034] Figure 1 This is a process flow diagram of a finishing process for a fabric. Detailed Implementation

[0035] To make the inventive objectives, technical solutions, and beneficial technical effects of this application clearer, the following detailed description is provided in conjunction with specific embodiments. It should be understood that the embodiments described in this specification are merely illustrative and not intended to limit the scope of this application.

[0036] For simplicity, this paper only explicitly discloses some numerical ranges. However, any lower limit can be combined with any upper limit to form an unspecified range; and any lower limit can be combined with other lower limits to form an unspecified range, just as any upper limit can be combined with any other upper limit to form an unspecified range. Furthermore, although not explicitly stated, every point or individual value between the endpoints of a range is included within that range. Therefore, each point or individual value can serve as its own lower or upper limit and be combined with any other point or individual value, or with other lower or upper limits, to form an unspecified range.

[0037] In the description of this article, it should be noted that, unless otherwise stated, "above" and "below" include the number itself, and "several" in "one or more" means two or more.

[0038] The foregoing description of this invention is not intended to describe every disclosed embodiment or implementation. Instead, the following description provides more specific examples of exemplary embodiments. Throughout the application, guidance is provided through a series of embodiments that can be used in various combinations. The examples listed are merely representative and should not be construed as exhaustive.

[0039] like Figure 1 As shown, this embodiment includes the following steps:

[0040] Step a: Fulling. The fabric is fulled. The fulling process is carried out in a fulling machine. Specifically, water and HAY-71 anionic nonionic composite shrinking agent are added to the fulling machine. The mass of the anionic nonionic composite shrinking agent is 2% of the fabric mass. The fulling machine temperature is raised to 35-40 degrees Celsius by heating. When the fabric is immersed in the hot fulling solution, the tips of the tile-like scales covering the fiber surface can easily gelatinize. Under external pressure, local adhesion may occur between the fibers at the gelatinized areas, which is beneficial for fulling. Higher fulling temperatures make the wool fibers easier to swell, resulting in shorter fulling times and better effects. However, if the temperature is too high, the fulling effect is difficult to control, the fabric is prone to felting, and the fibers are easily damaged. Therefore, the fulling temperature needs to be controlled between 35 and 40 degrees Celsius.

[0041] Adjusting the roller pressure to 2 bar and the groove pressure to 1.5 bar allows the fabric to shrink under humid heat, making the fabric structure denser. Simultaneously, utilizing the unique felting properties of animal fibers such as cashmere and wool, a certain nap is created on the fabric surface, which is beneficial for subsequent processing. Furthermore, felting also makes the fabric denser, shorter, heavier per square meter, thicker, stronger, and more elastic and warmer. The felted fabric surface will show a layer of fluff, giving it a beautiful appearance, a rich and soft feel, and a gentle color. In addition, the fluff created by felting can also soften and conceal certain defects in the fabric, preventing them from being noticeably exposed on the surface.

[0042] Step b: Stretching and drying. The fabric that underwent fulling in step a is then stretched and dried. Specifically, the fabric treated in step a is stretched using a stretching machine, such as a fabric stretching machine or a needle plate stretching machine; no specific limitations are made here. Because fibers are malleable under humid conditions, gradually widening the fabric to the specified size and then drying it to stabilize it can reduce fabric deformation during use.

[0043] Step c: Steel wire raising. The fabric that has undergone stretching and drying in step b is then subjected to steel wire raising. Considering that fulling and stretching drying only form a short nap on the fabric surface, without producing long fibers, and the fabric is dense and thick, steel wire raising is necessary.

[0044] Specifically, the fabric treated in step b is subjected to multiple raising processes using a wire raising machine until the fabric surface is covered with a dense layer of long raw material fibers. In this embodiment, either a single-action or double-action wire raising machine can be used; no specific limitation is made. The fabric treated with wire raising is thick, soft, and warm, with a full and dense nap, concealed weave, and a softened, elastic base.

[0045] Step d: Ribbed napping. The fabric treated with steel wire raising in step c is then subjected to ribbed napping. Considering that the raised nap from steel wire raising is often messy and doesn't provide the best hand feel, ribbed napping is necessary to further refine the fabric.

[0046] Step e: Backwashing. The fabric treated with burr-like texture in step d is then backwashed. Considering that although the surface fibers of the fabric treated with burr-like texture have a certain degree of curl and show a consistent direction, they are still somewhat different from the unique curl state of animal fibers themselves, further processing of the fabric is required.

[0047] Specifically, the fabric that has undergone the thorn-flecked treatment is washed again using a reverse-flow rinsing method. This allows the fabric fibers, after the thorn-flecked treatment, to recover to some extent the unique curl of the animal fibers themselves under the reverse flow of water, presenting a natural, subtle curled appearance and achieving a more fluffy state.

[0048] Step f: Drying. The fabric that has been rinsed against the nap in step e is dried.

[0049] Step g: Dry brushing. The fabric from step f, after drying, undergoes dry brushing. Considering that the fabric's fluffiness is not yet optimal after drying, dry brushing is performed. Specifically, using the brush rollers of a wet brushing machine, dry brushing is performed while both the fabric and the brush rollers are dry. The direction of dry brushing is along the direction of the fabric fibers, making the surface fibers of the fabric fluffy, natural, and smooth.

[0050] Step h: Ironing and calendering. The fabric that has been brushed dry in step g is ironed and calendered.

[0051] Specifically, the fabric after dry brushing is calendered using a calendering machine. In this embodiment, either a single-roller or double-roller calendering machine can be used; no specific limitation is made. The calendered fabric surface is fluffy and full, with a smooth and delicate texture and a natural, soft luster.

[0052] Furthermore, considering that auxiliaries such as wool oil were added to treat the fabric in the previous production process, some of these auxiliaries may remain on the fabric after the previous process, which may affect the fulling process. Therefore, the following steps need to be taken on the fabric before fulling:

[0053] For the first wash, the fabric is placed in a soaking solution, which includes a fluffing agent.

[0054] Dehydration treatment: The fabric after the initial washing is dehydrated.

[0055] Specifically, the fabric is rinsed with clean water. A wool fluffing agent can be added during the rinsing process. In this embodiment, a 1313 softening and fluffing agent with a concentration of 2 g / L is preferably used. The wool fluffing agent can make the fibers on the fabric surface more fluffy. The initial wash not only removes dirt and auxiliaries such as wool oil added in previous production processes, but also eliminates the internal stress generated in various fibers during spinning and weaving, allowing the fibers to relax naturally and aiding subsequent processing. The internal stress here is a type of stress, but it is not generated by external loads; rather, it is inherent to the object itself. It arises from the orientation of molecular chains and uneven plastic deformation in various parts of the object during its formation process. Like stress, internal stress can cause material deformation. When the internal stress is too high, it manifests as changes in product dimensions and warping. After the initial wash, the fabric is dehydrated, and then fulled.

[0056] Furthermore, considering that anionic and nonionic composite shrink-reducing agents are added during the fulling process, and these agents may remain on the fabric surface and affect subsequent processes, a second washing process is performed after fulling. This second washing removes the anionic and nonionic composite shrink-reducing agents added during fulling and helps the various fibers in the fabric regain their original elasticity, making the fabric smoother. After the second washing, the fabric is also dehydrated to prepare for subsequent processes.

[0057] In one embodiment of this disclosure, step b may be followed by steaming, whereby the fabric after stretching and drying is subjected to steaming treatment.

[0058] Specifically, the fabric after stretching and drying will undergo steaming. The steaming method can be open-type, can-type, or continuous steaming; no specific method is specified in this embodiment. Steaming not only stabilizes the fabric's shape and prevents deformation, but also makes it feel full and fluffy, with a soft luster, and smooths the surface without streaks, preparing it for subsequent processes.

[0059] Specifically, since thorn-based napping needs to be done while the fabric is damp, the following steps are required after the wire napping process:

[0060] Impregnation involves impregnating the fabric after the steel wire has been brushed.

[0061] Specifically, the fabric, after being treated with steel wire napping, undergoes a padding process. The fabric is passed through a padding tank filled with a biological enzyme solution, and then evenly wetted by the rollers, resulting in a smooth and uniformly moist fabric. Simultaneously, a brightening and smoothing agent of a weak cationic polymer compound at a concentration of 1 g / L is added to the tank, making the fabric surface fibers soft and lustrous.

[0062] After the padding treatment, the fabric is in a wet state. The fibers on the wet fabric surface are combed by a thorn-shaped napping machine. At the same time, because the plant thorns on the surface of the thorns have a curved arc, the fibers on the surface of the fabric can become naturally curled and have a certain direction, presenting a fixed direction of lying down.

[0063] After the hair removal treatment of the prickly fruit, the following steps are also required:

[0064] Drying: Dry the fabric after the prickly fruit has been treated.

[0065] Ironing involves ironing the dried fabric.

[0066] Specifically, the fabric treated with thorns is dried, and then ironed and calendered to make the fibers on the fabric surface, which are in a flexed state, smooth and shiny, exhibiting a water ripple-like appearance.

[0067] Because the fabric has a high moisture content after reverse rinsing, it is necessary to include the following steps before drying:

[0068] Dehydration: The fabric that has been rinsed against the nap is dehydrated.

[0069] Specifically, the fabric that has undergone reverse napping and rinsing is first dehydrated by a centrifugal dehydrator, and then dried to make it completely dry in preparation for subsequent processes.

[0070] The dehydration and drying processes described above are necessary because the fabric needs to be kept dry during the steel wire raising process. These processes allow the fabric to reach a better condition during steel wire raising. During steel wire raising, the fabric is subjected to warp forces, which cause the fabric width to narrow. Therefore, in step b, the fabric needs to be stretched to widen its width, ensuring that the fabric width meets the process standards even after steel wire raising.

[0071] Furthermore, considering that the fabric will be subjected to tension in the warp direction during subsequent dyeing and finishing processes, resulting in a decrease in the warp crimp height and thus elongation, this is because when hydrophilic fiber fabrics are thoroughly soaked in water, the fibers swell, increasing the diameter of both warp and weft yarns. This increases the warp crimp height, shortens the fabric length, and causes shrinkage. Therefore, after dry brushing treatment, the following steps are also necessary:

[0072] Pre-shrinking involves pre-shrinking the fabric after dry brushing.

[0073] Specifically, the fabric is slowly passed through a mesh-like, breathable working surface, where steam is evenly sprayed. Simultaneously, the mesh-like working surface vibrates, allowing the fabric to lay completely flat and free from any external force. This releases the internal stress generated in the fibers and yarns during the initial processing, resulting in a certain degree of shrinkage. In this embodiment, the pre-shrinking machine can be a rubber blanket pre-shrinking machine or a two-roller resistance pre-shrinking machine; no specific limitation is made. Pre-shrinking eliminates the internal stress of the fabric, preventing excessive shrinkage during subsequent garment processing and wear. This further ensures that the fabric's steam shrinkage rate meets quality requirements, while the steam also makes the fabric feel more fluffy.

[0074] To meet the requirements of the finishing process, the overall process was redesigned before the fabric finishing. The overall process design adopted a configuration with different warp and weft yarn counts, changing the original configuration of warp and weft yarns having the same count to a configuration with finer warp yarns and coarser weft yarns. The warp yarns were selected from 18S / 1 to 48S / 2, and the weft yarns from 18S / 2 to 14S / 2.

[0075] Furthermore, the fabric used in the post-processing method has a weft-phase structure, and the weft side accounts for at least 80% of the fabric. Specifically, the fabric structure is changed from the conventional 2 / 2 twill weave to a five-end or seven-end weft satin for both the front and back sides. This changes the fabric structure from a warp-weft co-phase structure to a weft-phase structure, highlighting the weft yarn structure on the front side. At the same time, by adjusting the warp and weft density, a fabric structure with a weft side accounting for more than 80% is formed. This facilitates increasing the density of weft nap during the later post-processing, enhancing the fullness and fluffiness of the fabric.

[0076] According to a second aspect of the present invention, a fabric is provided, which is a fabric prepared by the above-described finishing process of the fabric.

[0077] The finishing process of the fabric provided by this invention allows the fibers to exhibit their inherent characteristics in the fabric, resulting in a fluffy, thick, naturally curly, soft luster, and a delicate, smooth feel.

[0078] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of the invention is defined by the appended claims.

Claims

1. A method for finishing fabrics, characterized in that, Includes the following steps: Step a: Fulling, the fabric is fulled, wherein the fabric is an animal fiber fabric; Step b: Stretching and drying, the fabric that has undergone fulling in step a is stretched and dried. Step c: Steel wire raising, the fabric after stretching and drying in step b is subjected to steel wire raising treatment; Step d: Prickly napping, the fabric that has been treated with steel wire napping in step c is subjected to prickly napping treatment. Step e: Backwashing, the fabric that has been treated with thorns in step d is subjected to backwashing. Step f: Drying, the fabric that has been rinsed against the nap in step e is dried. Step g: Dry brushing, the fabric that has been dried in step f is subjected to dry brushing treatment; Step h: Ironing and calendering, the fabric after dry brushing in step g is ironed and calendered.

2. The finishing process method for fabric according to claim 1, characterized in that, Before step a, the following also includes: For the first wash, the fabric is placed in an soaking solution for cleaning, wherein the soaking solution includes a fluffing agent; Dehydration: The fabric after the initial washing is dehydrated.

3. The finishing process method for fabric according to claim 1, characterized in that, Following step a, the following is also included: For the second wash, rinse the fabric that has undergone the fulling treatment with clean water.

4. The finishing process method for fabric according to claim 1, characterized in that, Step b is followed by: Steaming is the process of steaming the fabric after it has been stretched and dried.

5. The finishing process method for fabric according to claim 1, characterized in that, Step c is followed by: Impregnation involves impregnating the fabric after the steel wire has been napped.

6. The finishing process method for fabric according to claim 1, characterized in that, Following step d, the following is also included: Drying: The fabric after the prickly fruit napping treatment is dried. Heat treatment: The dried fabric is heat treated.

7. The finishing process method for fabric according to claim 1, characterized in that, Step e is followed by: Dehydration: The fabric that has been rinsed with water after being washed with reverse nap is dehydrated.

8. The finishing process method for fabric according to claim 1, characterized in that, Step g is followed by: Pre-shrinking involves pre-shrinking the fabric after the dry brushing process.

9. The finishing process method for fabric according to claim 1, characterized in that, The fabric has a weft structure, and the weft portion accounts for at least 80% of the fabric.

10. A fabric, characterized in that, The fabric is prepared by the finishing process of the fabric according to any one of claims 1-9.

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