TW202113195A - Manufacturing method of hydrophobic yarn - Google Patents

Abstract

A manufacturing method of a hydrophobic yarn includes performing a hydrophobic treatment to a polyester yarn. The polyester yarn is soaked in a hydrophobic treatment solution and treated by a pressure cycling at a temperature of 25℃ to 75℃ and under a pressure of 1 to 5kgf/cm² to form a hydrophobic yarn. The hydrophobic treatment solution includes 5 parts by weight to 45 parts by weight of a fluorine-free water repellent, 0.5 parts by weight to 5 parts by weight of a bridging agent, and 50 parts by weight to 95.5 parts by weight of a solvent.

Description

Manufacturing method of hydrophobic yarn

The present disclosure relates to a method for manufacturing a hydrophobic yarn, in particular, a method for preparing a hydrophobic yarn by subjecting polyester yarn to hydrophobic treatment.

In recent years, people's awareness of family leisure and health has gradually increased, so consumer demand for functional fabrics has also increased. One of the functional fabrics popular among consumers is water-repellent fabric, which not only can withstand light rain, but also has a breathable effect, so that the body can keep dry. Therefore, how to make water-repellent fabric is the most important in recent years. One of development. However, the traditional water-repellent fabric production method has low chemical utilization rate, inability to process stably, excessively high water-repellent coating thickness, long sampling time, difficult uniform distribution of the water-repellent coating, and poor fabric quality due to the limitations of the manufacturing process. Stability and other issues.

The present disclosure provides a method for manufacturing a hydrophobic yarn, which includes subjecting polyester yarn to hydrophobic treatment, wherein the polyester yarn is soaked in a hydrophobic treatment solution at a temperature of 25°C to 75°C at a rate of 1 to 5 kgf/ The pressure of cm ² performs a pressurization cycle to form a hydrophobic yarn. The hydrophobic treatment solution includes 5 parts by weight to 45 parts by weight of a fluorine-free water repellent, 0.5 parts by weight to 5 parts by weight of a bridging agent, and 50 parts by weight to 95.5 parts by weight of a solvent.

In some embodiments, the ratio of the weight of the fluorine-free water-repellent agent to the weight of the bridging agent is between 9-11.

In some embodiments, the time to perform the pressurization cycle is between 15 minutes and 45 minutes.

In some embodiments, before the hydrophobic treatment of the polyester yarn, it further comprises winding the polyester yarn into a cheese yarn.

In some embodiments, before performing hydrophobic treatment on the polyester yarn, it further includes dyeing the polyester yarn.

In some embodiments, after dyeing the polyester yarn and before performing the hydrophobic treatment on the polyester yarn, it further includes washing the polyester yarn.

In some embodiments, the polyester yarn is composed of short fibers, and the imperial count of the polyester yarn is between 12 and 45.

In some embodiments, the polyester yarn is composed of long fibers, and the fiber fineness of the long fibers is between 1 dpf and 2.5 dpf.

In some embodiments, the water-repellent fabric made of hydrophobic yarns washed 30 times in water is measured according to the AATCC 22 standard method, and the water-repellent fabric has a water repellency greater than or equal to 70.

In some embodiments, the solvent is water.

These and other features, characteristics and advantages of the present disclosure can be better understood with reference to the following description and the scope of the attached patent application.

It should be understood that the foregoing general description and the following specific description are merely exemplary and explanatory, and are intended to provide further description of the present invention as required.

In this article, the range represented by "a value to another value" is a general way to avoid listing all the values in the range one by one in the specification. Therefore, the record of a specific numerical range covers any numerical value in the numerical range and the smaller numerical range defined by any numerical value in the numerical range, as if the arbitrary numerical value and the smaller numerical value are clearly written in the specification The scope is the same.

As used herein, "approximately", "approximately", "essentially", or "substantially" includes the stated value and the average value within the acceptable deviation range of the specific value determined by a person of ordinary skill in the art, taking into account all The measurement in question and the specific number of errors associated with the measurement (ie, the limitations of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or, for example, within ±30%, ±20%, ±15%, ±10%, ±5%. Furthermore, "about", "approximately", "essentially", or "substantially" used herein can be based on measurement properties, coating properties, or other properties to select a more acceptable deviation range or standard deviation, and It is possible to apply all properties without a standard deviation.

Although a series of operations or steps are used below to illustrate the methods disclosed herein, the sequence of these operations or steps should not be interpreted This is a limitation of the content of this disclosure. For example, certain operations or steps may be performed in a different order and/or simultaneously with other steps. In addition, it is not necessary to perform all operations, steps and/or features to realize the implementation of the present disclosure. In addition, each operation or step described herein may include several sub-steps or actions.

In order to solve the problems mentioned in the prior art, the present disclosure provides a method for hydrophobically treating polyester yarns to produce hydrophobic yarns. The water-repellent fabric made from the hydrophobic yarn has good water repellency and good washing resistance.

The method for producing hydrophobic yarns of the present disclosure includes hydrophobic treatment of polyester yarns. The polyester yarn is soaked in a hydrophobic treatment solution at a temperature of 25°C to 75°C at a pressure of ^{1 to 5 kgf/cm 2} A pressure cycle is performed to form a hydrophobic yarn. The hydrophobic treatment solution includes 5 parts by weight to 45 parts by weight of a fluorine-free water repellent, 0.5 parts by weight to 5 parts by weight of a bridging agent, and 50 parts by weight to 95.5 parts by weight of a solvent. According to the amount of polyester yarn, the temperature can be adjusted to optimize the composition of the hydrophobic treatment solution to uniformly adhere to the polyester yarn. The temperature is, for example, 30, 35, 40, 45, 50, 55, 60, 65, or 70°C. In some embodiments, the effect of high temperature is better than that of low temperature. The pressure is, for example, 1.5, ^{2, 2.5, 3,} 3.5, 4, or 4.5 kgf/cm 2. In some embodiments, the polyester yarn is a polyethylene terephthalate (PET) yarn. In some embodiments, the time to perform the pressurization cycle is between 15 minutes and 45 minutes. The time is, for example, 20, 25, 30, 35, or 40 minutes.

It’s worth noting that compared to just attaching the yarn to the hydrophobic treatment The method of hydrophobic treatment of the solution. The components of the hydrophobic treatment solution are attached to the yarn by pressure. The components have better permeability and durability to the yarn, and the treated yarn can have better washing resistance Sex.

In addition, the present disclosure performs hydrophobic treatment on the polyester yarn by means of a pressurized cycle. The hydrophobic treatment solution does not need to add a penetrant, and a hydrophobic yarn with good hydrophobic effect can be obtained through the aforementioned treatment conditions.

In some embodiments, before performing the hydrophobic treatment on the hydrophobic yarn of the polyester yarn, it further comprises winding the polyester yarn into a cheese. In some embodiments, before performing hydrophobic treatment on the polyester yarn, it further includes dyeing the polyester yarn. In some embodiments, after dyeing the polyester yarn and before performing the hydrophobic treatment on the polyester yarn, it further includes washing the polyester yarn. In some embodiments, the hydrophobic yarn manufacturing method of the present disclosure can be integrated into the current cheese dyeing process. The steps of the cheese dyeing process include, but are not limited to, loosening, refining, bleaching, dyeing, reducing washing, drainage cleaning, dehydration, drying, and winding of the cheese. After draining and washing, the hydrophobic treatment solution can be injected into the dye vat containing the cheese, and the pressurized cycle is carried out to carry out the hydrophobic treatment on the dyed cheese. Therefore, the hydrophobic yarn manufacturing method of the present disclosure can be implemented by the current cheese dyeing equipment, and can be easily integrated into the current cheese dyeing process, and is made of hydrophobic treated polyester yarn Water-repellent fabric has good color fastness to rubbing and color fastness to washing.

In some embodiments, the ratio of the weight of the fluorine-free water-repellent agent to the weight of the bridging agent is between 9-11. The ratio is, for example, 9.5, 10, or 10.5. When the ratio falls within the above range, the hydrophobic yarn can be used to make Water repellent fabric with good water repellency. When the ratio is too small, the water repellency may be insufficient, and when the ratio is too large, it will cause waste of fluorine-free water repellent. In some embodiments, water-repellent fabrics made of hydrophobic yarns washed 30 times in water are measured according to the AATCC 22 standard method, and the water-repellent fabric has a water repellency greater than or equal to 70.

The method for producing hydrophobic yarns of the present disclosure can be used for polyester yarns composed of short fibers or long fibers. In some embodiments, the imperial count of the polyester yarn is between 12 and 45. The imperial count is, for example, 15, 20, 25, 30, 35, or 40. In some embodiments, the polyester yarn is, for example, composed of short fibers, where the short fibers are, for example, short natural fibers or cut chemical fibers. For example, the short fiber is cut polyethylene terephthalate fiber, and the fiber length is between 25 and 100 mm. In other embodiments, the polyester yarn is composed of, for example, long fibers, and the long fibers are, for example, silk or continuous chemical fibers. For example, the long fiber is a polyethylene terephthalate long fiber, wherein the fiber fineness of the long fiber is between 1dpf and 2.5dpf, and the fiber specification is between 30d/12f and 75d/72f, for example. The fiber fineness is, for example, 1.2, 1.4, 1.6, 1.8, 2, 2.2, or 2.4 dpf.

In some embodiments, the fluorine-free water repellent is a pre-coating emulsion, which is prepared by the following steps: (1) Homogenizing the oil-water mixture to form a starting mini-emulsion, wherein the composition of the starting mini-emulsion includes oil (2) Adding the initiator to make the initial miniemulsion undergo miniemulsion polymerization to form a polyacrylate miniemulsion. Acrylate monomers include: short-chain acrylate monomer CH ₂ =C(R ₁ )COOR ₂ , R ₁ is hydrogen or methyl, R ₂ is methyl or ethyl; the chemical formula is CH ₂ =C(R ₁ ) The long linear acrylate monomer of COOR _{3 , where R 1} is hydrogen or methyl, and R ₃ is a linear alkyl group of C12 to C20; the modified acrylate monomer of the _{chemical formula is CH 2} =C(R ₁ )COOR ₄ Body, wherein R ₁ is hydrogen or methyl, R ₄ is -(CH ₂ ) _n OH, n=2-4; and a cross-linked acrylate monomer having at least two acryl groups; and (3) mixed organic The mini-emulsion of silicon system, acid catalyst and polyacrylate is used for hydrolysis condensation reaction and coupling reaction to form the pre-coating emulsion. The emulsion before coating contains an organic-inorganic composite polymer composed of organic silica and polyacrylate. The organosilicon system includes organosilane, linear polysiloxane, and hexamethyldisilazane (HMDS). Organosilanes include: the first long-chain trialkoxysilane of the _{chemical formula R 5 -Si-(OR 6} ) _{3 , wherein R 5} is a C5 to C10 linear alkyl group, and R ₆ is a methyl or ethyl group; It is the second long-chain _{trialkoxysilane of R 7} -Si-(OR ₆ ) _{3 , wherein R 7} is a straight chain alkyl group, the carbon number is greater than R _{5 and the} carbon number is at least 7, and R ₆ is methyl or ethyl ; And a modified trialkoxysilane with the chemical formula R ₈ -Si-(OR ₆ ) ₃ , wherein R ₈ is -(CH ₂ ) _n NH ₂ , n=2-4, and R ₆ is methyl or ethyl .

It is worth noting that the fluorine-free water repellent has been introduced into the silicon component that helps the yarn to be soft and has good permeability. Therefore, the hydrophobic treatment solution can be applied to the hydrophobic treatment of polyester yarn without adding a penetrant.

In some embodiments, the short-chain acrylate monomer is methyl methacrylate (MMA), ethyl methacrylate (ethyl methacrylate), methyl methacrylate (methyl methacrylate), and methyl methacrylate (MMA). acrylate), ethyl acrylate (ethyl acrylate). Short-chain acrylate monomers can be polymerized into the main chain of polyacrylate.

In some embodiments, the long linear acrylate monomer is, for example, stearyl methacrylate (SMA). Since the terminal group is a C12-C20 linear alkyl group, it has better hydrophobicity.

In some embodiments, the modified acrylate monomer is 2-hydroxyethyl acrylate (2-HEA). Since the terminal group of the modified acrylate monomer is a hydroxyl group, it can be used to improve the touch of the fabric on the hand.

In some embodiments, the crosslinking acrylate monomer is, for example, tripropylene glycol diacrylate (TPGDA). Since both ends of the crosslinked acrylate monomer have acryl groups that can undergo free radical polymerization, both ends can react with acrylic monomers or polyacrylates to form chemical bonds, which can improve the crosslinking of polyacrylates. density.

In some embodiments, the first surfactant is a nonionic surfactant, an anionic surfactant, or a cationic surfactant. More than one surfactant can be used. The nonionic surfactant is, for example, polymerizable nonylphenol polyethoxylate (Ne-40). The anionic surfactant is, for example, sodium dodcecyl sulfate (SDS). The cationic surfactant is, for example, hexadecyl trimethyl ammonium chloride (HTAC).

In some embodiments, the homogenization step further includes adding oil Phase triethoxy vinyl silane (triethoxy vinyl silane). The vinyl group of the triethoxy vinyl silane can form chemical bonds with the fibers to improve the adhesion between the emulsion and the fibers.

In some embodiments, the droplet size of the polyacrylate mini-emulsion may be 500 nm or less. In some embodiments, the mini-emulsion polymerization reaction is carried out in an environment with a temperature of about 60°C to about 85°C. In some embodiments, the formed polyacrylate mini-emulsion has a pH of about 5 to about 7.

The initiator is used to initiate a free radical polymerization reaction. In some embodiments, the initiator is 2,2'-azobis(2-methylpropionitrile) (AIBN). At about 80°C, 2,2'-azobisisobutyronitrile will decompose and release free radicals to initiate free radical polymerization of acrylate monomers.

In some embodiments, the hydrolysis condensation reaction and the coupling reaction are carried out in an environment with a pH of about 5 to about 12 and a temperature of about 15°C to about 40°C. In some embodiments, the weight ratio of the starting miniemulsion to the silicone system is 2.5:1 to 7.5:1.

In some embodiments, the first long-chain trialkoxysilane is octyltriethoxysilane (OTES). In some embodiments, the second long-chain trialkoxysilane is hexadecyltrimethoxysilane (HTMS). The first long-chain trialkoxysilane and the second long-chain trialkoxysilane can provide hydrophobicity due to the long linear alkyl group. In some embodiments, the molar ratio of the first long-chain trialkoxysilane to the second long-chain trialkoxysilane is 1:0.5 to 1:2.

In some embodiments, the modified trialkoxysilane is 3-aminopropyltriethoxysilane (APTES). The amine group can form a chemical bond with the fiber to increase the adhesion between the emulsion and the fiber. In addition, it can also improve the hand feel to the fiber.

In some embodiments, the organosilane further includes triethoxy vinyl silane (TEVS). The vinyl group of the triethoxy vinyl silane can form chemical bonds with the fibers to improve the adhesion between the emulsion and the fibers.

The acid catalyst is used to catalyze the hydrolysis reaction of various trialkoxysilanes in organosilanes. In some embodiments, the acid catalyst is acetic acid.

Linear polysiloxane refers to a polysiloxane with a long linear silicon-oxygen bond, which can be used as the main chain of an organosilicon polymer, and its terminal group can be a hydroxyl group or an amine group. In some embodiments, the linear polysiloxane is, for example, hydroxyl-terminated polydimethylsiloxane (hydroxyl terminated-PDMS), and the dynamic viscosity can range from 30 to 100 mm ² /s. The linear polysiloxane whose terminal group is a hydroxyl group can undergo condensation reaction with the hydroxyl group formed after the hydrolysis of the organosilane to produce a silicon-oxygen bond.

In some embodiments, hexamethyldisilazane (HMDS) can be used as a coupling agent. It is speculated that it can be used to increase the force between various compounds of the organosilicon system and polyacrylate to form a stable organic-inorganic Composite polymer.

In some embodiments, the step of mixing the organosilicon system, the acid catalyst and the polyacrylate mini-emulsion further includes mixing the second interfacial activity. Sex agent. In some embodiments, the first surfactant includes a nonionic surfactant and an anionic surfactant, and the second surfactant includes a cationic surfactant. The anionic surfactant may be sodium dodcecyl sulfate (SDS), for example. The nonionic surfactant is, for example, polymerizable nonylphenol polyethoxylate (Ne-40). The cationic surfactant can be, for example, hexadecyl trimethyl ammonium chloride (HTAC). The first surfactant and the second surfactant can be used to improve the stability of the emulsion.

In another embodiment, the first surfactant includes a nonionic surfactant and a cationic surfactant, and the second surfactant includes an anionic surfactant.

In some embodiments, the mini-emulsion of mixing organosilicon system, acid catalyst and polyacrylate comprises the following steps: (1) mixing organosilicon system and acid catalyst to partially hydrolyze organosilane to form a sol-gel solution; and (2) Mix the sol-gel solution and the mini-emulsion of polyacrylate to form the pre-coating emulsion.

在式(2)中，R¹為C1-C6烷基、C2-C6烯基、C7-C12芳烷基、N-取代胺甲醯基、苯基、硝基、鹵素原子或-COO-R²，R²為氫原子或C1-C6烷基；n為0至3的整數，且當n為2或3時，R¹彼此相同或不同。m例如為2至6的整數。R例如是包括脂肪族基團、環脂肪族基團、雜環基團或芳香族基團且包括至少三個連續的伸乙氧基或至少一個聚羥基羧酸的殘基的m價基團。 In some embodiments, the cross-linking agent includes a compound represented by the following formula (1), R-(Z) _m formula (1), wherein R represents the result of removing m isocyanate groups from a polyisocyanate compound having m isocyanate groups Residue; m is an integer from 2 to 10; Z is the same or different from each other, and Z is represented by the following formula (2),

In formula (2), R ¹ is C1-C6 alkyl, C2-C6 alkenyl, C7-C12 aralkyl, N-substituted aminomethanyl, phenyl, nitro, halogen atom or -COO-R ² , R ² is a hydrogen atom or a C1-C6 alkyl group; n is an integer from 0 to 3, and when n is 2 or 3, R ^{1 is the} same or different from each other. m is an integer of 2 to 6, for example. R is, for example, an m-valent group that includes an aliphatic group, a cycloaliphatic group, a heterocyclic group, or an aromatic group and includes at least three consecutive ethoxy groups or at least one residue of a polyhydroxycarboxylic acid .

The bridging agent of the present disclosure has a trifunctional multi-terminal fixed main structure, and after chemical reaction with the fluorine-free water-repellent agent, it can effectively improve the adhesion of the fluorine-free water-repellent agent on the yarn surface to increase the washing resistance times.

The bridging agent of the present disclosure is an isocyanate compound blocked by pyrazole, which can be stored stably at normal temperature (for example, 10°C to 50°C), and can release isocyanate groups after heating to perform a bridging reaction.

The polyisocyanate compound having m isocyanate groups may be well-known polyisocyanate compounds, for example, aliphatic diisocyanates, cycloaliphatic diisocyanates, heterocyclic or aromatic diisocyanates, or dimers and trimers of the above-mentioned diisocyanates Or modified polyisocyanate compounds such as polymers. The above-mentioned diisocyanate compound is, for example, hexamethylene diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, diphenylmethane diisocyanate, or toluene diisocyanate. Furthermore, the polyisocyanate compound may be hexamethylene diisocyanate biuret, hexamethylene diisocyanate trimer, isophorone diisocyanate trimer, toluene diisocyanate trimer The pentamer obtained by the cyclization reaction of isophorone diisocyanate and toluene diisocyanate.

In some embodiments, the solvent is water.

The hydrophobic yarn of the present disclosure can be applied to make a textile that can provide moderate waterproofness and has a breathable function. In some embodiments, the hydrophobic yarn can be used to form the inner layer of apparel, such as clothes, coats, or pants, to provide moisture barrier and dryness. In addition, the hydrophobic yarn can be used in different fabric weave designs, and can make the fabric weave design more flexible, for example, to provide local hydrophobicity requirements. In addition, the hydrophobic yarn can be used to make unidirectional moisture-conducting fabrics. The inner layer can be made of the hydrophobic yarn of the present disclosure, and the outer layer is made of absorbent yarn. Therefore, the wearer’s sweat can be drained from the inner layer to the outer layer. To achieve the effect of moisture absorption and quick drying, and can avoid sweat back seepage.

Hereinafter, the features of the present invention will be described in more detail with reference to Experimental Examples 1 to 3. Although the following embodiments are described, the materials used, their amounts and ratios, processing details, processing procedures, etc. can be appropriately changed without going beyond the scope of the present invention. Therefore, the embodiments described below should not restrictively interpret the present invention.

Experimental example 1: Performing quality test on water-repellent fabric made of short fiber yarn

The yarn-dyed polyethylene terephthalate (PET) yarn composed of short fibers is subjected to hydrophobic treatment. Under different temperatures and treatment times, the yarn wound into a cheese is soaked in a hydrophobic treatment solution at 4kgf The pressure of /cm ² performs a pressurization cycle to form a hydrophobic yarn. The hydrophobic treatment solution includes 10 parts by weight of fluorine-free water repellent, 1 part by weight of bridging agent, and 89 parts by weight of water. Water-repellent fabrics made of hydrophobic yarns were tested for water repellency (according to AATCC 22 standard method) and washing resistance test (according to AATCC 135(1)(II)(A)i standard method). Please refer to Table 1 below for the measurement results.

It can be seen from Table 1 that the water-repellent fabric made from the hydrophobic yarn of this experimental example has good water-repellency and washing resistance.

Next, the yarn-dyed PET yarn composed of short fibers (English count: 15 counts) is subjected to hydrophobic treatment. At a temperature of 70°C and different treatment times, the yarn wound into a cheese is immersed in a hydrophobic treatment solution under ^{a pressure of 4 kgf/cm 2} to carry out a pressurization cycle to form a hydrophobic yarn. The hydrophobic treatment solution includes a fluorine-free water repellent, a bridging agent, and water. The water-repellent fabric made of hydrophobic yarn is tested for rubbing color fastness (according to CNS1499 standard method), washing and dyeing fastness measurement (according to CNS1494 standard method) and water repellency measurement (according to AATCC 22 standard method) ). Please refer to Table 2 below for the measurement results.

It can be seen from Table 2 that under the conditions of a temperature of 70°C, a treatment time of 20 minutes, and a ratio of fluorine-free water repellent to bridging agent of 10, the water repellent fabric made from the hydrophobic yarn of this experimental example is washable. It has good color fastness to rubbing, color fastness to washing and water repellency.

Experimental example 2: Performing quality test on water-repellent fabric made of short fiber yarn or long fiber yarn

Dyed PET yarn or PET dyed yarn composed of short fiber (English count: 15) or long fiber (specification: 40d/36f) is hydrophobically treated, and it will be wound into a cheese yarn at different temperatures and times. The yarn is soaked in a hydrophobic treatment solution at ^{a pressure of 4kgf/cm 2} for pressurization cycle to form hydrophobic yarn dyed PET yarn or hydrophobic PET dyed yarn. The hydrophobic treatment solution includes a fluorine-free water repellent, a bridging agent, and water. The water-repellent fabric made of hydrophobic yarn is tested for rubbing color fastness (according to CNS1499 standard method), washing and dyeing fastness measurement (according to CNS1494 standard method) and water repellency measurement (according to AATCC 22 standard method) ). Please refer to Table 3 below for the measurement results of hydrophobic yarn dyed PET yarn. Please refer to Table 4 below for the measurement results of hydrophobic PET dyed yarn.

It can be seen from Table 3 and Table 4 that the water-repellent fabric made of hydrophobic yarn dyed PET yarn or hydrophobic PET colored yarn has washing resistance, and has good rubbing fastness, washing and dyeing fastness and water repellency .

Experimental example 3: Performing quality test on water-repellent fabrics made of short fiber yarns or long fiber yarns of different colors

Hydrophobic treatment is performed on the yarn-dyed PET yarn of different colors composed of short fibers or long fibers. At a temperature of 70℃, the yarn wound into a cheese is soaked in a hydrophobic treatment solution at a pressure of ^{4kgf/cm 2} Perform a pressurization cycle to form a hydrophobic yarn. The hydrophobic treatment solution includes 10 parts by weight of fluorine-free water repellent, 1 part by weight of bridging agent, and 89 parts by weight of water. Water-repellent fabrics made of hydrophobic yarns are measured for water repellency (according to AATCC 22 standard method), dry rubbing color fastness measurement (according to CNS1499 standard method), wet rubbing color fastness measurement (according to CNS1499 standard) Method) and washing fastness measurement (according to CNS1494 standard method). Please refer to Table 5 and Table 6 below for the measurement results.

From Table 5 and Table 6, we can see that the yarn dyed PET yarn is made Water-repellent fabrics are resistant to washing, and have good color fastness to rubbing and fastness to washing and dyeing.

Although the present invention has been described in considerable detail with reference to certain embodiments, other embodiments are also possible. Therefore, the spirit and scope of the appended patent application should not be limited to the description of the embodiments contained herein.

It is obvious to those skilled in the art that various modifications and changes can be made to the structure of the present invention without departing from the scope or spirit of the present invention. In view of the foregoing, the present invention intends to cover the modifications and changes of the present invention falling within the scope of the appended claims.

Claims (10)

A method for producing a hydrophobic yarn includes: performing a hydrophobic treatment on a polyester yarn, and soaking the polyester yarn in a hydrophobic treatment solution at a pressure of 1 to 5 kgf/cm ² at a temperature of 25°C to 75°C. The pressure is circulated under pressure to form the hydrophobic yarn, and the hydrophobic treatment solution includes: 5 parts by weight to 45 parts by weight of a fluorine-free water repellent; 0.5 parts by weight to 5 parts by weight of a bridging agent; and 50 parts by weight to 95.5 parts by weight of solvent. The manufacturing method according to claim 1, wherein the ratio of the weight of the fluorine-free water-repellent agent to the weight of the bridging agent is between 9 and 11. The manufacturing method according to claim 1, wherein the time for performing the pressurization cycle is between 15 minutes and 45 minutes. The manufacturing method according to claim 1, further comprising winding the polyester yarn into a cheese before subjecting the polyester yarn to the hydrophobic treatment. The manufacturing method according to claim 1, further comprising dyeing the polyester yarn before performing the hydrophobic treatment on the polyester yarn. The manufacturing method according to claim 5, after performing the dyeing treatment on the polyester yarn, and before performing the hydrophobic treatment on the polyester yarn, further comprising washing the polyester yarn . The manufacturing method according to claim 1, wherein the polyester yarn is composed of short fibers, and the imperial count of the polyester yarn is between 12 and 45. The manufacturing method according to claim 1, wherein the polyester yarn is composed of long fibers, and the fiber fineness of the long fibers is between 1 dpf and 2.5 dpf. The manufacturing method according to claim 1, wherein the water-repellent fabric made of the hydrophobic yarn that has been washed 30 times is subjected to water-repellency measurement according to the AATCC 22 standard method, and the water-repellent degree of the water-repellent fabric is Greater than or equal to 70. The manufacturing method according to claim 1, wherein the solvent is water.