Fabric preparation method, fabric and underpants

Abstract

The invention provides a preparation method of a fabric, the fabric and underpants, and the preparation method comprises the following steps: respectively carrying out microcapsule coating on cranberry powder and probiotic powder by adopting a polyurethane wall material to form cranberry microcapsules and probiotic microcapsules; dispersing the cranberry microcapsules and the probiotic microcapsules in an emulsion dispersant aqueous solution to form a cranberry probiotic finishing agent; mixing the cranberry probiotic finishing agent with a cross-linking agent in water to obtain a setting agent working solution; and carrying out high-temperature setting treatment on a to-be-treated fabric by adopting the setting agent working solution to obtain a finished fabric. The finished fabric prepared by the embodiment of the invention can ensure stable adhesion of functional components such as cranberry probiotics and the like while maintaining original breathability and moisture absorption characteristics of the fabric, natural fragrance is released through cranberries, the wearing experience is improved, and the balance of flora at private parts is adjusted through the probiotics, so that the health of the flora at the private parts of girls is better protected.

Description

Technical Field

[0001] This disclosure relates to the field of textile processing technology, specifically to a method for preparing a fabric, the fabric itself, and underwear. Background Technology

[0002] In recent years, as women have become increasingly concerned about the balance of vaginal flora, more and more probiotic products have appeared on the market. Currently, the majority of products on the market are oral, such as probiotic liquids and capsules, while external probiotic feminine washes and sanitary napkins are also available. The usage scenarios for these products are relatively limited; they are only used for specific oral, maintenance, or menstrual periods, and most products using live probiotics depend on the colonization of the live bacteria to determine their effectiveness.

[0003] However, underwear, which is used most frequently in daily life and comes into the most contact with the genitals, is not combined with probiotics. Most underwear on the market uses regular pure cotton as the crotch fabric, which only meets basic wearing comfort needs and lacks functional designs for balancing the flora in the genital area. Summary of the Invention

[0004] In view of this, the present disclosure provides a method for preparing a fabric, a fabric, and underwear, which, while retaining the original breathable and moisture-wicking properties of the fabric, can ensure the stable attachment of functional ingredients such as cranberry and probiotics, and better protect the health of the female private parts flora.

[0005] To achieve the above objectives, this disclosure provides a method for preparing a fabric, comprising: encapsulating cranberry powder and probiotic powder separately with a polyurethane wall material to form cranberry microcapsules and probiotic microcapsules; wherein the probiotic powder is inactivated Lactobacillus acidophilus SY23, the parent strain of which is a strain isolated from a red papaya sample, and the inactivated Lactobacillus acidophilus SY23 is a functional strain purified and cultured from the parent strain; dispersing the cranberry microcapsules and probiotic microcapsules in an aqueous emulsifying dispersant solution to form a cranberry probiotic finishing agent; mixing the cranberry probiotic finishing agent with a crosslinking agent in water to obtain a setting agent working solution; and using the setting agent working solution to perform high-temperature setting treatment on the fabric to be treated to obtain the finished fabric.

[0006] In one embodiment, the cranberry microcapsules and probiotic microcapsules are dispersed in an aqueous emulsifying dispersant solution to form a cranberry probiotic finishing agent, comprising: dispersing the cranberry microcapsules and probiotic microcapsules in an aqueous emulsifying dispersant solution to form a cranberry probiotic finishing agent with a cranberry mass percentage of 0.5%-2%, a probiotic mass percentage of 4.5%-7%, and a polyurethane wall material mass percentage of 27%-29%; the total mass percentage of the cranberry microcapsules and probiotic microcapsules is 32%-38%.

[0007] In one embodiment, before mixing the cranberry probiotic finishing agent and the crosslinking agent in water, the method further includes: determining the fabric type of the fabric to be treated; when the fabric type is nylon-spandex fabric, determining the target mass percentage of the cranberry probiotic finishing agent in the setting agent working solution as a first mass percentage; when the fabric type is lyocell fabric, determining the target mass percentage of the cranberry probiotic finishing agent in the setting agent working solution as a second mass percentage; when the fabric type is cotton fabric, modal fabric, or other viscose fiber fabric, determining the target mass percentage of the cranberry probiotic finishing agent in the setting agent working solution as a third mass percentage; wherein, the first mass percentage > the second mass percentage > the third mass percentage.

[0008] In one embodiment, the cranberry probiotic finishing agent and crosslinking agent are mixed in water to obtain a setting agent working solution, comprising: determining a target mass percentage of the cranberry probiotic finishing agent in the setting agent working solution based on the fabric type of the fabric to be treated; mixing the cranberry probiotic finishing agent and crosslinking agent in water according to a ratio in which the mass percentage of the cranberry probiotic finishing agent is the target mass percentage and the mass percentage of the crosslinking agent is 3%-5% to obtain the setting agent working solution; wherein, the target mass percentage is 5%-9%.

[0009] In one embodiment, the cranberry probiotic finishing agent and the crosslinking agent are mixed in water to obtain a setting agent working solution, comprising: compounding the cranberry probiotic finishing agent with other textile functional auxiliaries to form a compound finishing agent; and mixing the compound finishing agent and the crosslinking agent in water to obtain the setting agent working solution.

[0010] In one embodiment, after obtaining the setting agent working solution, before performing high-temperature setting treatment on the fabric to be treated using the setting agent working solution, the method further includes: adjusting the pH value of the setting agent working solution to a preset pH value range; measuring the viscosity of the setting agent working solution after pH adjustment, and controlling the viscosity within a preset viscosity range to obtain the setting agent working solution.

[0011] In one embodiment, the preset pH value range is 6.5-7.5, and the preset viscosity range is 100 mPa·s-200 mPa·s.

[0012] In one embodiment, the setting agent working solution is used to perform high-temperature setting treatment on the fabric to be treated, including: pre-washing the fabric to be treated to obtain a pre-treated fabric; immersing the pre-treated fabric in the setting agent working solution and maintaining it for a preset time to obtain an impregnated fabric; performing a rolling treatment on the impregnated fabric to control the liquid content of the fabric at a preset percentage that matches the fabric type; and performing a heat setting treatment on the rolled fabric at a preset temperature to form a finished fabric.

[0013] In one embodiment, the rolled fabric is heat-set at a preset temperature to form a finished fabric, comprising: laying the rolled fabric flat on the conveyor belt of a heat-setting machine, and heat-setting the fabric under preset temperature and wind speed conditions, so that the polyurethane wall material and polyurethane crosslinking agent in the microcapsules form chemical bonds with the hydroxyl groups on the fabric fibers, and at the same time, self-crosslinking reactions occur between the polyurethane wall materials and between the polyurethane wall materials and the polyurethane crosslinking agent; and the heat-set fabric is air-cooled to room temperature to obtain the finished fabric.

[0014] In one embodiment, when the fabric type is nylon-spandex fabric, the liquid retention rate is controlled at 60%-70%; when the fabric type is lyocell fabric, the liquid retention rate is controlled at 75%-85%; when the fabric type is cotton fabric, modal fabric or other viscose fiber fabric, the liquid retention rate is controlled at 90%-100%.

[0015] Secondly, embodiments of this disclosure also provide a fabric, which is prepared using any of the preparation methods described above.

[0016] Thirdly, embodiments of this disclosure also provide underwear, wherein the crotch fabric of the underwear is prepared using any of the preparation methods described above.

[0017] Compared with related technologies, the technical solution disclosed herein has the following beneficial effects: This embodiment of the invention encapsulates cranberry powder and probiotic powder separately into microcapsules before applying them to fabric. This ensures that the functional ingredients effectively adhere to the fabric while maintaining a certain level of washability. The use of polyurethane wall material to encapsulate the cranberry powder and probiotic powder separately prevents their loss and degradation during processing and use, achieving a synergistic effect. Furthermore, high-temperature setting of the microcapsules with a cross-linking agent enhances their adhesion to the fabric, ensuring stable adhesion of the functional ingredients and meeting daily washing needs. This embodiment of the invention retains the original breathability and moisture-wicking properties of the fabric while releasing a natural fragrance through cranberry, enhancing the wearing experience. It also regulates the balance of vaginal flora through probiotics, thereby better protecting the health of the female vaginal flora.

[0018] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and are not intended to limit the technical solutions of this disclosure.

[0019] To make the above-mentioned objects, features and advantages of this disclosure more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. These drawings are incorporated in and constitute a part of this specification. They illustrate embodiments conforming to this disclosure and, together with the specification, serve to explain the technical solutions of this disclosure. It should be understood that the following drawings only show some embodiments of this disclosure and should not be considered as limiting the scope. Those skilled in the art can obtain other related drawings based on these drawings without creative effort.

[0021] Figure 1 A flowchart illustrating the fabric preparation method provided in this embodiment of the disclosure; Figure 2 The process flow diagram for heat setting treatment. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. The components of the embodiments of this disclosure described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this disclosure provided in the accompanying drawings is not intended to limit the scope of the claimed disclosure, but merely represents selected embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In this document, the term "and / or" merely describes a relationship, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Furthermore, the term "at least one" in this document means any combination of at least two of any one or more elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0025] Studies have shown that probiotics can reduce the levels of inflammatory factors in vaginal tissue and increase the levels of immunoglobulins, demonstrating excellent efficacy in preventing and treating bacterial vaginosis. However, directly applying probiotics to textiles presents challenges such as unstable working solutions, processing difficulties, low utilization rates, and poor washability. Furthermore, cranberries are a fruit highly beneficial to women's health, rich in proanthocyanidins, vitamin C, and other components that possess antibacterial, antioxidant, and urinary tract infection prevention properties. Similarly, how to apply cranberries to textiles remains a significant challenge.

[0026] Therefore, developing a technology that can effectively apply cranberries and probiotics to fabric preparation is of great significance. The following embodiments of this disclosure will specifically describe this preparation technology. The fabrics to which this technology can be applied can include various types of fabrics, such as cotton, nylon-spandex, lyocell, and modal fabrics, and can be applied to any intimate apparel, such as underwear and briefs.

[0027] like Figure 1 As shown, the fabric preparation method provided in this embodiment includes the following steps: S101: Cranberry powder and probiotic powder are microencapsulated using polyurethane wall material to form cranberry microcapsules and probiotic microcapsules respectively.

[0028] Here, polyurethane wall materials are derived from plant oil extraction and processing, making them safe, environmentally friendly, and free of toxic and harmful substances such as formaldehyde. They also possess excellent film-forming properties, adhesion, and chemical stability, enabling them to form a stable bond with fabric fibers.

[0029] The cranberry powder and probiotic powder are separately coated with polyurethane wall material, which can simultaneously protect the effective components of cranberries (anthocyanins, vitamin C, etc.) and the functional activity of probiotics, preventing them from being degraded or inactivated during subsequent processing (such as high temperature, acid and alkaline environments), storage, or use, while also improving wash resistance. The resulting cranberry microcapsules and probiotic microcapsules are micron-sized particles (e.g., particle size of 7-8 micrometers (μm)), which can better penetrate into the fabric fibers, without affecting the fabric's feel, and improve adhesion.

[0030] In some embodiments, the probiotic powder may be inactivated Lactobacillus acidophilus SY23, wherein the parent strain of inactivated Lactobacillus acidophilus SY23 is a strain isolated from a red papaya sample, and the inactivated Lactobacillus acidophilus SY23 is a functional strain obtained by purifying and culturing the parent strain.

[0031] Here, inactivated Lactobacillus acidophilus SY23 is a progeny obtained by purifying and culturing a strain isolated from red papaya samples. This strain has an inhibitory effect on pathogens associated with bacterial vaginosis, can reduce the level of inflammatory factors in vaginal tissue, and increase the level of immunoglobulins, thus having the effect of preventing and treating bacterial vaginosis. For example, inactivated Lactobacillus acidophilus SY23, through its occupancy protection function, seizes adhesion sites, forms a defensive barrier, and prevents harmful bacteria from invading; furthermore, it can promote the proliferation of beneficial bacteria, increase competitiveness, thereby reducing the number of pathogenic bacteria; it can also alleviate allergic reactions, bind to harmful bacteria, and prevent their colonization and spread.

[0032] S102: Disperse the cranberry microcapsules and probiotic microcapsules in an aqueous emulsifying dispersant solution to form a cranberry probiotic finishing agent.

[0033] Here, through the surface activity of the emulsifying dispersant, the two microcapsules can be stably suspended in the aqueous solution to form a stable and uniform milky white liquid finishing agent. At the same time, the finishing agent can maintain compatibility with subsequent crosslinking agents and water, ensuring that the cranberry components and probiotics can be evenly distributed on the surface and inside of the fabric when it is subsequently combined with the fabric.

[0034] In practice, pre-dissolved emulsifying dispersant can be added to deionized water and stirred to form a homogeneous carrier solution. Subsequently, cranberry microcapsules can be added to the solution and stirred initially, followed by probiotic microcapsules. High-speed stirring is then used to break up the aggregates, and deionized water can be added during the stirring process to homogenize the mixture. Throughout this process, it is essential to ensure that the content of each added component is within the pre-defined mass ratio range. For the prepared cranberry probiotic finishing agent, observe its appearance for the absence of sedimentation and layering, and for uniform particle size. Once qualified, it should be sealed and stored in a cool, dark place.

[0035] Before proceeding with subsequent processes, the resulting cranberry probiotic finishing agent can be stored and used. By controlling the appropriate temperature and humidity, the shelf life can be maintained for about 6 months.

[0036] In the cranberry probiotic finishing agent prepared by the process disclosed herein, the mass percentage of cranberries can be 0.5%-2%, the mass percentage of probiotics can be 4.5%-7%, and the mass percentage of polyurethane wall material can be 27%-29%. Thus, the total mass percentage of cranberry microcapsules and probiotic microcapsules is 32%-38%. This formulation can ensure efficacy (probiotics play a role in regulating the flora, and cranberries provide natural aroma and antibacterial auxiliary effects) while avoiding side effects (excessive probiotic concentration can lead to a rough and stiff fabric feel, and excessive cranberry concentration can lead to an unpleasant fragrance or uneven fabric color).

[0037] In one embodiment, the ratio of cranberry to probiotics is 1%, probiotics to ...

[0038] During the preparation of cranberry probiotic finishing agent, cranberry microcapsules, probiotic microcapsules, polyurethane wall materials, etc., can be weighed and the weight data of each preparation step can be recorded to ensure that the proportion of each component is always within the specified range.

[0039] S103: Mix the cranberry probiotic finishing agent and cross-linking agent in water to obtain the working solution of the fixing agent.

[0040] The cross-linking agent used in this step can enhance the bonding strength between the microcapsules (including cranberry microcapsules and probiotic microcapsules) and the fabric fibers, and also ensure stable chemical bonding during subsequent high-temperature setting, thereby improving the wash resistance of the finished fabric. Specifically, the cranberry probiotic finishing agent, as a functional carrier for cranberry and probiotic microcapsules, when mixed with the cross-linking agent (polyurethane-based), can form chemical bonds with the polyurethane wall material of the microcapsules and the hydroxyl groups of the fabric fibers. Simultaneously, it can also self-crosslink to form a stable structure, thereby enhancing the bonding strength between the microcapsules and the fabric. The resulting finished fabric exhibits excellent wash resistance and retains its antibacterial effect even after hundreds of washes.

[0041] In some embodiments, before mixing the cranberry probiotic finishing agent and crosslinking agent in water, the fabric type of the fabric to be treated can be determined first. Different target mass percentages of the cranberry probiotic finishing agent in the setting agent working solution can be determined for different fabric types. For example, for fabrics with poor hygroscopicity and low liquid retention (measured after compression and before entering the heat setting machine in the subsequent heat setting process), a higher target mass percentage can be set to compensate for the low amount of adsorbed working solution and ensure that the total amount of functional components meets the standard; conversely, for fabrics with good hygroscopicity and high liquid retention, a slightly lower target mass percentage can be set.

[0042] For example, when the fabric type is nylon-spandex fabric, the target mass percentage of cranberry probiotic finishing agent in the setting agent working solution is determined as a first mass percentage; when the fabric type is lyocell fabric, the target mass percentage of cranberry probiotic finishing agent in the setting agent working solution is determined as a second mass percentage; when the fabric type is cotton fabric, modal fabric, or other viscose fiber fabric, the target mass percentage of cranberry probiotic finishing agent in the setting agent working solution is determined as a third mass percentage; wherein, the first mass percentage > the second mass percentage > the third mass percentage.

[0043] In some embodiments, after determining the target mass percentage of cranberry probiotic finishing agent in the setting agent working solution based on the fabric type of the fabric to be treated, the cranberry probiotic finishing agent and crosslinking agent can be mixed in water according to a ratio of cranberry probiotic finishing agent mass percentage being the target mass percentage and crosslinking agent mass percentage being 3%-5% to obtain the setting agent working solution; the target mass percentage is 5%-9%.

[0044] In practice, the cross-linking agent can be slowly added to a stable water flow according to its mass ratio and stirred until it is completely dissolved (without visible particles) to obtain a cross-linking agent solution. Then, cranberry probiotic finishing agent can be added to the cross-linking agent solution according to its mass ratio and stirred continuously to obtain the finishing agent working solution.

[0045] The above-mentioned proportion range can adapt to the reaction requirements of subsequent high-temperature setting. In addition, the target mass ratio of cranberry probiotic finishing agent is in the range of 5%-9%, which can accommodate the differentiated adjustments of different fabric types, and the mass ratio of crosslinking agent is in the range of 3%-5%, which can ensure the crosslinking effect while avoiding excessive amount that will cause the fabric to stiffen.

[0046] Within the target mass percentage range of 5%-9%, for example, the first mass percentage can be 8% (corresponding to a mass volume concentration of 80g / L), the second mass percentage can be 7% (corresponding to a mass volume concentration of 70g / L), and the third mass percentage can be 6% (corresponding to a mass volume concentration of 60g / L, that is, 60g of cranberry probiotic finishing agent is contained in 1L of the finishing agent working solution).

[0047] For the different types of fabrics mentioned above, the total dosage of cranberry probiotic finishing agent, multiplied by its corresponding mass percentage and liquid retention rate, is approximately 6%, ensuring that the total amount of functional components meets the standard. The liquid retention rate here is measured after the subsequent heat setting process, before the fabric enters the heat setting machine, after the compression treatment. For example, the first, second, and third mass percentages mentioned above can be considered as percentages under the condition of a 100% liquid retention rate. In actual process implementation, after the compression treatment in the subsequent heat setting process, the liquid retention rate of some fabrics will be less than 100%, such as nylon-spandex fabrics, which may have a liquid retention rate of 70%. When the fabric to be treated is nylon-spandex, the cranberry probiotic finishing agent uses the first mass percentage, such as the aforementioned 8%. In this case, for nylon-spandex fabrics, the total dosage of cranberry probiotic finishing agent is 70% × 8% = 5.6%.

[0048] In some embodiments, after obtaining the setting agent working solution, before using the setting agent working solution to perform high-temperature setting treatment on the fabric to be treated, the pH value of the setting agent working solution can be adjusted and its viscosity controlled to ensure that the setting agent working solution can penetrate the fabric evenly and maintain stable performance during impregnation and rolling.

[0049] Specifically, the pH value of the setting agent working solution can first be adjusted to a preset pH range; the viscosity of the setting agent working solution after pH adjustment can be measured and controlled within a preset viscosity range to obtain the setting agent working solution. For example, the preset pH range can be 6.5-7.5, and the preset viscosity range can be 100 mPa·s-200 mPa·s.

[0050] Here, a neutral pH protects the polyurethane microcapsule wall material and crosslinking agent activity, preventing acid and alkali corrosion of the fabric fibers; an appropriate viscosity ensures uniform penetration of the working solution into the fabric, preventing microcapsule loss due to excessive thinness and agglomeration due to excessive thickness, thus guaranteeing the stability of subsequent padding and high-temperature setting processes. Viscosity can be measured using a rotational viscometer; if the viscosity of the setting agent working solution is too high, it can be adjusted by adding a small amount of deionized water; if the viscosity is too low, a small amount of thickener (such as hydroxyethyl cellulose) can be added to adjust the viscosity.

[0051] In some embodiments, the above-mentioned cranberry probiotic finishing agent can also be used in combination with other textile functional auxiliaries (such as some antibacterial auxiliaries and antistatic auxiliaries) to form a compound finishing agent; then the compound finishing agent and crosslinking agent can be mixed in water to obtain a setting agent working solution.

[0052] The compounding ratio of the above-mentioned cranberry probiotic finishing agent with other textile functional auxiliaries, for example: cranberry probiotic finishing agent: other textile functional auxiliaries = 1:1~2:1, can be set according to the liquid content of the fabric. When the liquid content is low, the proportion of cranberry probiotic finishing agent can be relatively higher.

[0053] Specifically, the cranberry probiotic finishing agent is first compounded with other textile functional auxiliaries such as antibacterial and antistatic agents at a mass ratio of 1:1 to 2:1 to form a compound finishing agent. Then, the compound finishing agent is mixed with a crosslinking agent (3%-5% by mass) and water to obtain the setting agent working solution. The compounding ratio is set according to the fabric's liquid content. The lower the liquid content (e.g., 60%-70% for nylon-spandex fabrics), the higher the proportion of cranberry probiotic finishing agent is needed to compensate for insufficient adsorption by the working solution; conversely, the higher the liquid content (e.g., 90%-100% for cotton), the lower the proportion can be. During implementation, other functional auxiliaries must meet the requirements of water phase compatibility, high temperature resistance (e.g., subsequent heat setting at 130℃), and not damaging the stability of the microcapsules, working synergistically with the probiotic finishing agent. This method, while retaining core functions such as bacterial regulation and wash resistance, expands additional functions such as antibacterial and antistatic properties, and is adaptable to different fabric characteristics, ensuring functional uniformity and a good user experience.

[0054] For example, other textile functional auxiliaries, such as some antibacterial and antistatic auxiliaries, include commonly used silver ion antibacterial auxiliaries. While silver ion antibacterial auxiliaries have a certain antibacterial effect, their working principle is mainly indiscriminate sterilization. While inhibiting pathogenic bacteria, they can also affect beneficial bacteria. In contrast, the cranberry probiotic finishing agent prepared in this embodiment does not affect beneficial bacteria and specifically inhibits pathogenic bacteria. Compared to the aforementioned silver ion antibacterial auxiliaries, its antibacterial effect is gentler, healthier, and safer.

[0055] Alternatively, you can choose some natural plant extracts and bio-enzymes as antibacterial adjuvants to combine with cranberry probiotic finishing agents. These antibacterial adjuvants can complement the gut microbiota regulation mechanism of cranberry probiotics, effectively reducing the impact on beneficial bacteria. Examples of natural plant extract antibacterial adjuvants include tea saponins (tea tree seed extract), artemisia extract (eucalyptol, thujone), and honeysuckle extract (chlorogenic acid). Examples of bio-enzyme antibacterial adjuvants include lysozyme (egg white source / microbial fermentation) and lactoferrin (whey extract).

[0056] Antistatic auxiliaries can be selected based on their compatibility with aqueous systems (avoiding layering / agglomeration with cranberry probiotic finishing agents), high-temperature resistant properties, long-lasting antistatic effect, and the ability to prevent fabric stiffness and maintain breathability and moisture absorption. Examples include cationic (long-lasting) and nonionic (mild) antistatic auxiliaries. Cationic antistatic auxiliaries include polyquaternium-10 (a cellulose-modified product) and dodecyltrimethylammonium chloride (DTAC), while nonionic antistatic auxiliaries include fatty alcohol polyoxyethylene ethers (AEO-9 / AEO-15) and polyethylene glycol fatty acid esters (PEG-400 monostearate).

[0057] S104: The fabric to be treated is subjected to high-temperature setting treatment using the setting agent working solution to obtain the finished fabric.

[0058] In this embodiment of the disclosure, the fabric to be processed can be any type of fabric, such as the aforementioned nylon-spandex fabric, lyocell fabric, all-cotton fabric (such as 32-count pure cotton plain weave fabric), modal fabric, or other viscose fiber fabrics, etc.

[0059] Furthermore, the finished fabrics prepared according to the embodiments of this disclosure can be used for various types of intimate apparel, such as underwear and briefs.

[0060] The above steps, through a high-temperature setting process, achieve a firm bond between the microcapsules and the fabric, while also activating the slow-release function of the microcapsules (meaning that the probiotics and cranberry active ingredients in the microcapsules are not released all at once during processing or first use, but are released slowly and continuously during daily wear, friction, washing, etc.), ultimately resulting in a finished fabric with comprehensive functions such as breathability, moisture absorption, bacterial regulation, natural antibacterial properties, and washability.

[0061] like Figure 2 As shown, in some embodiments, the process of using the setting agent working solution to perform high-temperature setting treatment on the fabric to be treated may include: S201: Pre-clean the fabric to be treated to obtain a pre-treated fabric; S202: Immerse the pretreated fabric in the setting agent working solution and maintain it for a preset time (e.g., 3-5 minutes, which can be adjusted according to the fabric thickness; for example, 32S pure cotton plain weave fabric has small fiber gaps and does not need to be too long to achieve penetration) to obtain the impregnated fabric. S203: Roll the impregnated fabric to control the liquid content of the fabric at a preset percentage that matches the fabric type. S204: The rolled fabric is heat-set at a preset temperature (e.g., 120°C~140°C) to form the finished fabric.

[0062] In practice, impurities and oil stains on the surface of the fabric to be treated can be removed first to avoid affecting the bonding effect between the setting agent working solution and the fiber. Then, the pre-treated fabric can be immersed in the setting agent working solution to allow the fabric to fully absorb the solution, ensuring that the microcapsules can penetrate into the fiber interior. During the tack-pressing process, the liquid application rate can be controlled according to the fabric type to ensure sufficient adhesion of functional components while avoiding excessive liquid application that could lead to fabric stiffness and uneven setting. After the tack-pressed fabric is subjected to high-temperature setting at a preset temperature, the microcapsules are firmly fixed to the fabric fibers through chemical bonds. During subsequent wear, friction and pressure can rupture the capsule walls, resulting in the slow release of probiotics and cranberry components. Simultaneously, the finished fabric resists washing impact, allowing millions of probiotics to still be detected after dozens of washes, while maintaining 15A antibacterial effect, natural fragrance, and breathable moisture-wicking properties.

[0063] In the above embodiments, the impregnated fabric is subjected to a rolling process to control the liquid retention rate of the fabric at a preset percentage that matches the fabric type. That is, the controlled liquid retention rate can vary depending on the fabric type. For example, when the fabric type is nylon-spandex, the liquid retention rate can be controlled at 60%-70%; when the fabric type is lyocell, the liquid retention rate can be controlled at 75%-85%; and when the fabric type is cotton, modal, or other viscose fiber fabric, the liquid retention rate can be controlled at 90%-100%.

[0064] Here, the liquid-holding capacity of a fabric generally depends on the number of hydrophilic groups in the fiber itself, the looseness of the fiber structure, and the swelling rate. For example, in nylon-spandex fabrics (containing polyester and spandex blends), polyester fiber is a typical hydrophobic fiber (without hydrophilic groups), while spandex, although having a small number of hydrophilic segments, has poor overall moisture absorption, a dense fiber structure, and an extremely low swelling rate (it hardly swells after absorbing water). If the liquid-holding rate is too high, the fabric cannot effectively absorb excess working liquid, which may lead to the accumulation of the setting agent working liquid on the fabric surface, causing microcapsule aggregation after subsequent rolling (affecting functional uniformity). In addition, incomplete evaporation of moisture during high-temperature setting can damage the chemical bond between the polyurethane wall material and the fiber (reducing wash resistance); spandex is prone to aging and loss of elasticity when exposed to excessive moisture and high temperatures (affecting the wearing experience of the fabric). Therefore, it is necessary to control the liquid-holding rate to a relatively low level, such as the 60%-70% mentioned above. Lyocell fabrics (containing regenerated cellulose fibers) contain a large number of hydrophilic hydroxyl groups, with hygroscopicity between synthetic and natural fibers. The fiber structure is moderately dense, and the swelling rate is moderate (slightly swells after absorbing water). Therefore, a moderate liquid-holding ratio (75%-85%) is set for them, allowing the setting agent working solution to fully penetrate the fiber interior (ensuring sufficient contact area between microcapsules and fiber hydroxyl groups) without causing excessive swelling due to excessive moisture (avoiding fabric stiffness and dimensional instability after setting). For cotton, modal, and viscose fiber fabrics (containing natural or regenerated cellulose fibers), the fiber surface is covered with hydrophilic hydroxyl groups, resulting in extremely high hygroscopicity. The fiber structure is loose, and the swelling rate is high. Therefore, a higher liquid-holding ratio (90%-100%) is set for them, accommodating more working solution to ensure sufficient microcapsules enter the fiber interior (rather than just adhering to the surface).

[0065] In practice, when heat-setting the rolled fabric at a preset temperature, the rolled fabric can be laid flat on the conveyor belt of the setting machine. The fabric is then heat-set at a preset temperature (e.g., 120°C~140°C) and wind speed (e.g., 1.5~2m / s) to allow the polyurethane wall material and polyurethane crosslinking agent in the microcapsules to form chemical bonds with the hydroxyl groups on the fabric fibers. Simultaneously, self-crosslinking reactions occur between the polyurethane wall materials and between the polyurethane wall materials and the polyurethane crosslinking agent. The heat-set fabric is then air-cooled to room temperature to obtain the finished fabric.

[0066] Here, the rolled fabric is laid flat on the setting machine conveyor belt and heat-set at 120℃~140℃ (e.g., 130℃) and an air velocity of 1.5~2m / s, followed by room temperature air cooling. In the high-temperature environment, the polyurethane wall material of the microcapsules and the polyurethane crosslinking agent form chemical bonds with the hydroxyl groups of the fabric fibers. At the same time, self-crosslinking occurs between the polyurethane wall materials and between the polyurethane wall materials and the crosslinking agent, doubly reinforcing the adhesion of the microcapsules. Thus, the heat-setting process can achieve firm adhesion of the microcapsules (e.g., supporting 10-20 washes), activate the slow-release function, and lay the foundation for probiotics to exert their effects such as flora regulation and fabric antibacterial properties.

[0067] The following experimental process further illustrates the optimal ratio of relevant functional components in the cranberry probiotic finishing agent.

[0068] White 32S pure cotton plain weave fabric was used in the experiment. Different fabric colors may have different dyeing processes, which could affect the adhesion or retention of probiotics. White fabric was chosen for this experimental process because it has no inherent color interference, facilitating visual observation and instrument detection, minimizing errors, and thus improving detection accuracy.

[0069] In the first experiment, when preparing the above-mentioned cranberry probiotic finishing agent, the cranberry mass ratio was 0.4%, the probiotic mass ratio was 3%, and the total mass ratio of cranberry microcapsules and probiotic microcapsules was 30%.

[0070] After the finished fabric is prepared by the process described in this disclosure, the probiotic content (cell / g) of the finished fabric after different washing times is quantitatively tested, and the test results are shown in Table 1 below.

[0071] Table 1

[0072] Test data shows that the probiotic content was 9.47E+05 cells / g (approximately 950,000 cells / g) before washing; after 5 washes, it decreased to 6.93E+05 cells / g (approximately 690,000 cells / g); after 10 washes, it decreased to 6.44E+04 cells / g (approximately 60,000 cells / g); after 50 washes, only 8.63E+03 cells / g (approximately 8,600 cells / g) remained; and after 100 washes, only 2.53E+02 cells / g (approximately 253 cells / g) remained. Analysis suggests that this was due to the low initial proportion of probiotics and weak microcapsule adhesion, leading to rapid loss during washing.

[0073] In addition, the test results also showed that the initial aroma of cranberries was not strong; and the microcapsules were easy to detach. After washing with water 5 times, the cranberry components were basically lost and the aroma disappeared.

[0074] In the second experiment, the proportion of probiotics was increased to 5%, while the proportion of cranberries remained unchanged at 0.4%, and the proportion of cross-linking agents also remained unchanged. The total proportion of cranberry microcapsules and probiotic microcapsules remained at 30%. The probiotic content (cells / g) of the finished fabric was quantitatively tested after different washing cycles, and the test results are shown in Table 2 below.

[0075] Table 2

[0076] Test data shows that the probiotic content was 9.84E+07 cells / g (approximately 100 million cells / g) before washing; after 5 washes, it decreased to 1.67E+07 cells / g (approximately 17 million cells / g); after 10 washes, it decreased to 7.59E+06 cells / g (approximately 7.6 million cells / g); after 50 washes, it remained at 6.29E+04 cells / g (approximately 63,000 cells / g); and after 100 washes, it remained at 3.29E+03 cells / g (approximately 3,300 cells / g). Compared to the initial experiment, the probiotic content increased to some extent both before washing and after a certain number of washes.

[0077] In the third experiment, the proportion of probiotics was increased to 6%, and the proportion of cranberries was increased to 1%, bringing the total mass of cranberry microcapsules and probiotic microcapsules to 35%. This directly increased the total amount of functional components initially adsorbed by the fabric. Furthermore, the proportion of cross-linking agents was increased to allow for more complete chemical bonding between the cross-linking agent and the microcapsule wall material and fabric fibers, reducing the probability of microcapsules detaching during washing. In addition, the chain structure of the polyurethane wall material was adjusted to improve the dispersibility and stability of the microcapsules in the finishing agent, preventing microcapsule aggregation (preventing excessive / insufficient functional components in certain areas of the fabric). The adjusted microcapsule particle size is smaller, making it easier to penetrate into the fabric fibers (rather than just adhering to the surface). This improves the bonding strength between the microcapsules and fibers (reducing water loss during washing) and avoids the roughness and stiffness caused by large-diameter microcapsules.

[0078] Based on the above proportions, after the finished fabric is prepared through the above-described process, the probiotic content (cell / g) of the finished fabric after different washing cycles is quantitatively tested. The test results are shown in Table 3 below.

[0079] Table 3

[0080] The adjusted test results showed that the probiotic content reached 2.46E+08 cells / g before washing; after 5 washes (due to the microcapsule's slow-release function, some wall material ruptured, releasing internal probiotics), the content increased to 6.96E+08 cells / g (696 million cells / g). Subsequent washes resulted in slow loss; after 10 washes, the content remained at 3.18E+08 cells / g (approximately 318 million cells / g); after 15 washes, it remained at 2.75E+08 cells / g (approximately 275 million cells / g); after 20 washes, it remained at 1.37E+08 cells / g (approximately 137 million cells / g); after 50 washes, it remained at 6.35E+07 cells / g (approximately 63.5 million cells / g); and after 100 washes, it remained at 8.25E+06 cells / g (approximately 8.25 million cells / g). Even after dozens of washes, the probiotic content remains in the hundreds of millions, and after hundreds of washes, the remaining amount is still in the millions. In addition, after doubling the cranberry content to 1%, the initial fragrance is just right, and the microcapsule slow-release function allows the cranberry components to be released slowly, so the fabric still has a noticeable fragrance after 50 washes.

[0081] In addition, the functional effects of the finished fabric prepared by this process were tested, including: 1) Air permeability: According to GB / T 5453-1997 "Textiles - Determination of air permeability of fabrics", the air permeability of the fabric was tested using an air permeability meter. The test results show that an air permeability value greater than 300 mm / s ensures that the fabric is not stuffy when worn. 2) Moisture absorption and quick-drying performance: Tested according to GB / T 21655.2-2019 "Evaluation of moisture absorption and quick-drying properties of textiles - Part 2: Dynamic moisture transfer method". Test results show that the wetting time, water absorption rate, maximum wetting radius, and liquid water diffusion rate are all not lower than level 3; 3) Antibacterial properties: The antibacterial properties of the fabric were tested according to Q / BY M019-2025 "Antibacterial Textiles", testing the inhibition rate against Staphylococcus aureus, Escherichia coli (or Klebsiella pneumoniae), and Candida albicans; the antibacterial grade reached 15A. Specifically, after 350 washes, the inhibition rates against Staphylococcus aureus, Escherichia coli, and Candida albicans met the test requirements. The test results showed that the inhibition rate against Staphylococcus aureus was >99%, the inhibition rate against Escherichia coli was >96%, and the inhibition rate against Candida albicans was >96%. 4) Probiotic content; The probiotic content was determined using quantitative real-time PCR. Fabric samples (40cm × 40cm) were used, and standard curves were established for each corresponding bacterial species. Different bacteria exhibited different characteristics under fluorescent labeling. The probiotic content was determined by comparing the test sample with the standard curve. Test results showed that the probiotic content was ≥246 ​​million CFU / g before washing and ≥137 million CFU / g after 20 washes. 5) Easy to clean: Fabrics prepared using this process retain their stain-removing and non-re-staining properties even after 5 or 10 standard washes. Specifically, the fabric was washed 5 times according to the GB / T 8629-2017 4M procedure; the testing followed the FZ / T01118-2012 washing method 6A standard, using rabbit blood as the contaminant. The fabric was first contaminated and then laid flat to dry, followed by the prescribed washing procedure and oven drying. The results showed that the initial color difference (unwashed state after contamination) was grade 1, and after 5 washes, the color difference reached grade 4-5, meeting the standard requirement of a color difference ≥ 3-4 after washing. This proves that the fabric can still effectively remove stains after 5 standard washes, demonstrating good stain removal performance and washability. Furthermore, after 10 washes using the GB / T 8629-2017 4M program, the test results were consistent with those after 5 washes. That is, the initial color difference (unwashed state after contamination) was level 1, and after 10 washes, the color difference still reached levels 4-5. This indicates that the fabric's stain-removing effect remains stable with fewer washes (5 times), and does not significantly decrease with increasing washes (up to 10 times), further verifying the durability of the fabric's stain-removing performance, meeting the needs of daily wear scenarios requiring multiple washes.

[0082] In summary, the cranberry probiotic fabric prepared by this process has good breathability, moisture absorption, and antibacterial properties. The fabric can still maintain good functional performance after 20 washes, making it suitable for use in underwear and other intimate clothing, especially as the crotch fabric for women's underwear, effectively protecting women's intimate health.

[0083] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

[0084] Finally, it should be noted that the above-described embodiments are merely specific implementations of this disclosure, used to illustrate the technical solutions of this disclosure, and not to limit it. The protection scope of this disclosure is not limited thereto. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this disclosure; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure, and should all be covered within the protection scope of this disclosure. Therefore, the protection scope of this disclosure should be determined by the protection scope of the claims.

Claims

1. A method for preparing a fabric, characterized in that, include: Cranberry powder and probiotic powder were microencapsulated using polyurethane wall material to form cranberry microcapsules and probiotic microcapsules, respectively. The probiotic powder used was inactivated Lactobacillus acidophilus SY23, the parent strain of which was isolated from a red papaya sample, and the inactivated Lactobacillus acidophilus SY23 was a functional strain purified and cultured from the parent strain. The cranberry microcapsules and probiotic microcapsules are dispersed in an aqueous emulsifying dispersant solution to form a cranberry probiotic finishing agent; The cranberry probiotic finishing agent and cross-linking agent are mixed in water to obtain the working solution of the fixing agent; The fabric to be treated is subjected to high-temperature setting using the aforementioned setting agent working solution to obtain the finished fabric.

2. The method according to claim 1, characterized in that, The cranberry microcapsules and probiotic microcapsules are dispersed in an aqueous emulsifying dispersant solution to form a cranberry probiotic finishing agent, comprising: The cranberry microcapsules and probiotic microcapsules are dispersed in an aqueous emulsifying dispersant solution to form a cranberry probiotic finishing agent with a cranberry mass percentage of 0.5%-2%, a probiotic mass percentage of 4.5%-7%, and a polyurethane wall material mass percentage of 27%-29%. The total mass percentage of the cranberry microcapsules and probiotic microcapsules is 32%-38%.

3. The method according to claim 1, characterized in that, Before mixing the cranberry probiotic finishing agent and cross-linking agent in water, the mixture further includes: Determine the fabric type of the fabric to be processed; When the fabric type is nylon-spandex fabric, the target mass percentage of the cranberry probiotic finishing agent in the setting agent working solution is determined to be the first mass percentage. When the fabric type is Lyocell fabric, the target mass percentage of the cranberry probiotic finishing agent in the setting agent working solution is determined to be the second mass percentage. When the fabric type is cotton, modal, or other viscose fiber fabric, the target mass percentage of the cranberry probiotic finishing agent in the setting agent working solution is determined to be the third mass percentage. Wherein, the first mass percentage > the second mass percentage > the third mass percentage.

4. The method according to claim 3, characterized in that, The cranberry probiotic finishing agent and cross-linking agent are mixed in water to obtain a fixing agent working solution, comprising: Based on the fabric type of the fabric to be treated, determine the target mass percentage of the cranberry probiotic finishing agent in the setting agent working solution. The cranberry probiotic finishing agent and the cross-linking agent are mixed in water at a ratio of 3%-5% by mass of the cranberry probiotic finishing agent to the target mass ratio, to obtain the working solution of the fixing agent. The target quality accounts for 5%-9%.

5. The method according to claim 1, characterized in that, The cranberry probiotic finishing agent and cross-linking agent are mixed in water to obtain a fixing agent working solution, comprising: The cranberry probiotic finishing agent is compounded with textile functional auxiliaries to form a compound finishing agent; The compound finishing agent and crosslinking agent are mixed in water to obtain the working solution of the setting agent.

6. The method according to claim 1, characterized in that, After obtaining the setting agent working solution, before performing high-temperature setting treatment on the fabric to be treated using the setting agent working solution, the process further includes: Adjust the pH value of the working solution of the setting agent to a preset pH range; The viscosity of the working solution of the setting agent after pH adjustment is measured and controlled within a preset viscosity range to obtain the working solution of the setting agent.

7. The method according to claim 6, characterized in that, The preset pH value range is 6.5-7.5, and the preset viscosity range is 100 mPa·s-200 mPa·s.

8. The method according to claim 1, characterized in that, The fabric to be treated is subjected to high-temperature setting treatment using the aforementioned setting agent working solution, including: The fabric to be treated is pre-cleaned to obtain a pre-treated fabric. The pretreated fabric is immersed in the setting agent working solution and kept for a preset time to obtain the impregnated fabric. The impregnated fabric is rolled to control the liquid content of the fabric at a preset percentage that matches the fabric type. The rolled fabric is heat-set at a preset temperature to form the finished fabric.

9. The method according to claim 8, characterized in that, The rolled fabric is then heat-set at a preset temperature to form the finished fabric, including: The rolled fabric is laid flat on the conveyor belt of the setting machine and heat-set under preset temperature and wind speed conditions, so that the polyurethane wall material and polyurethane crosslinking agent in the microcapsule form chemical bonds with the hydroxyl groups on the fabric fibers. At the same time, self-crosslinking reactions occur between the polyurethane wall materials and between the polyurethane wall materials and the polyurethane crosslinking agent. The heat-set fabric is then cooled to room temperature by air cooling to obtain the finished fabric.

10. The method according to claim 8, characterized in that, When the fabric type is nylon-spandex, the liquid retention rate is controlled at 60%-70%. When the fabric type is Lyocell fabric, the liquid retention rate is controlled at 75%-85%; When the fabric type is 100% cotton, modal, or other viscose fiber fabric, the liquid retention rate is controlled at 90%-100%.

11. A fabric, characterized in that, The fabric is prepared using any one of the preparation methods described in claims 1 to 10.

12. A type of underwear, characterized in that, The crotch fabric of the underwear is prepared using any one of the preparation methods described in claims 1 to 10.

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