CN107476097B - Water-repellent and oil-repellent wash-and-wear-resistant shrink-proof knitted garment and preparation method thereof - Google Patents
Water-repellent and oil-repellent wash-and-wear-resistant shrink-proof knitted garment and preparation method thereof Download PDFInfo
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/04—After-treatment with organic compounds
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- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
- D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting
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- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
- D06C7/02—Setting
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/227—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
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- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
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- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
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- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/11—Oleophobic properties
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- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
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- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/45—Shrinking resistance, anti-felting properties
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Abstract
The invention provides a water-repellent and oil-repellent wash-and-wear washable shrink-proof knitted garment and a preparation method thereof. The method comprises the following steps: pretreating and drying the dyed knitted fabric by adopting a nonionic and/or anionic surfactant; performing anti-pin hole treatment on the fabric, controlling the pH value of the fabric surface to be 5.0-7.5, and controlling the drum explosion strength to be more than 60 PSI; after the fabric is made into a garment, treating the garment by using a finishing liquid containing a water-repellent and oil-repellent finishing agent, and controlling the liquid carrying rate of the treated garment to be 80-180%; pre-drying the ready-made clothes by adopting a roller dryer, and controlling the moisture content of the pre-dried ready-made clothes to be 5% -40%; and (3) performing positioning ironing and baking on the ready-made clothes to obtain the water-repellent, oil-repellent, wash-free, shrink-proof knitted clothes. The knitted garment provided by the invention has a series of advantages of water and oil resistance, shrinkage resistance, fastness to washing, good appearance flatness, fuzzing and pilling resistance and the like.
Description
Technical Field
The invention relates to a water-repellent and oil-repellent wash-and-wear washable shrink-proof knitted garment and a preparation method thereof, belonging to the technical field of textile garments.
Background
With the gradual expansion of the application range of textiles, the demands of people on the textiles are developed from single wearing beauty, wind and cold resistance to more directions, and people want to combine different functions and advantages in the same product. The single water-repellent and oil-repellent finishing can not meet the pursuit of consumers for high value-added clothes, and the consumers need the clothes to have the functions of water repellency and oil repellency, non-ironing, shrink proofing and the like.
At present, most of water-repellent and oil-repellent finishing is to treat fabrics. For example, in the fields of water-proof and oil-proof finishing of cotton knitted fabrics in Wang, jin Hai, discussion of water-and oil-repellent finishing process of pure cotton knitted fabrics in Luhuashan and the like, and in the fields of water-and oil-repellent multifunctional finishing of knitted fabrics in Von Aifen and the like, the method in the documents is adopted to finish the knitted fabrics, so that good water-and oil-repellent effects can be obtained, but the shrinkage and non-ironing performances of the finished knitted fabrics are not researched. Wangwei et al, in the research on the one-bath finishing of cotton fabrics by using a fluorine-containing water repellent finishing agent WR-1 and a crease-resistant finishing agent, adopt the crease-resistant finishing agent and the fluorine-containing water repellent finishing agent to finish the cotton fabrics in one bath, and the treated cotton fabrics have better crease-resistant, water-repellent and oil-repellent effects. The water and oil repellent finish reduces the moisture absorption swelling property of the cotton fiber, has a certain improvement effect on the shrinkage of the fabric, and the shrinkage of the garment made of the fabric can reach the requirements of-5% X-5% (AATCC 150).
The method can obtain better water and oil repellent effect, but the wash-and-wear ultra-low shrinkage knitted garment can not be obtained.
How to enable clothes to have the water and oil repellent performance and the wash and shrink resistant performance of no-iron becomes a technical problem to be solved urgently in the field.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a water-repellent, oil-repellent, wash-free, wash-resistant and shrink-resistant knitted garment and a preparation method thereof. The knitted garment provided by the invention has a series of advantages of water and oil resistance, shrinkage resistance, fastness to washing, good appearance flatness, fuzzing and pilling resistance and the like.
In order to achieve the purpose, the invention provides a method for preparing water-repellent and oil-repellent wash-and-wear washable and shrink-proof knitted clothes, which comprises the following steps:
pretreating and drying the dyed knitted fabric by adopting a nonionic and/or anionic surfactant;
performing anti-pin hole treatment on the fabric, controlling the pH value of the fabric surface to be 5.0-7.5, and controlling the drum explosion strength to be more than 60 PSI;
after the fabric is made into a garment, treating the garment by using a finishing liquid containing a water-repellent and oil-repellent finishing agent, and controlling the liquid carrying rate of the treated garment to be 80-180%;
pre-drying the ready-made clothes by adopting a roller dryer, and controlling the moisture content of the pre-dried ready-made clothes to be 5% -40%;
and (3) performing positioning ironing and baking on the ready-made clothes to obtain the water-repellent, oil-repellent, wash-free, shrink-proof knitted clothes.
The needle hole mainly refers to the phenomenon that during the sewing process of knitwear, when a machine needle runs at high speed, the loops of the fabric are punctured, the yarns are broken, the needle track holes are enlarged, the loops are scattered, and holes appear at the sewing position. The small holes are easy to expand under the action of external force, so that the stitch fastness of the product is reduced, and the appearance quality of the ready-made clothes is seriously influenced. According to the technical scheme provided by the invention, the needle hole prevention treatment is carried out on the fabric, so that the problems that the holes are enlarged under the action of external force, and the firmness and the appearance are influenced can be effectively avoided.
In the above method, preferably, the localized ironing comprises the following processes:
drawing a positioning frame with the same size on an ironing table according to the size of the ready-made clothes to be finally made, for example, the ready-made clothes needs to be made into M codes, drawing the positioning frame with the same size as the M codes on the ironing table, wherein the size of the ready-made clothes to be made is generally consistent with the size of the ready-made clothes after being pre-baked, so that the size of the ready-made clothes to be finally made can be understood as the size of the ready-made clothes after being pre-baked;
placing the ready-made clothes in the positioning frame (as shown in figure 1), and positioning and ironing the ready-made clothes by adopting a steam iron until all parts of the ready-made clothes are flat and have no wrinkles; meanwhile, the size of the main part of the ready-made clothes is ensured to be consistent with the corresponding size on the positioning frame, or the numerical value of the size of the main part of the ready-made clothes exceeding the corresponding size on the positioning frame is (0cm, 2.5 cm); wherein the main parts comprise a shirt length, a chest circumference and a foot circumference. Taking the length of the garment as an example, when positioning ironing is carried out, the size of the length of the finished garment is ensured to be consistent with the size of the length of the garment on the positioning frame, or the numerical value of the length of the finished garment exceeding the size of the length of the garment on the positioning frame is in the interval of (0cm, 2.5 cm); the same is true for the bust and the foot girth.
The invention has been found through intensive research that the conventional ironing adopts a steam iron for ironing, blowing ironing or pressing ironing, only the ironing process focuses on ironing and flattening the ready-made clothes, and the size of the ready-made clothes is not corrected in the ironing process. Due to the good elasticity and loose structure of the knitted fabric, the shirt length and the bust can be extended to a certain degree by conventional steam ironing, particularly, the shirt length and the bust can be generally ironed to be longer than 2cm by the bead ground fabric with more tucks, and the 'over-stretching' is extremely unfavorable for the size control and shrinkage result of the knitted garment. The clothes after being ironed conventionally are hung on a clothes hanger and then enter a continuous or intermittent baking furnace for baking, and finally are cooled, ironed and packaged, because the shrinkage rate difference exists among various batches of knitted fabrics and the production process of garment easy-care is long, the working procedures influencing the garment size include a plurality of working procedures such as pre-baking, ironing, baking and the like, the size of the clothes produced by the traditional garment easy-care method has large fluctuation, the size is difficult to be corrected by final ironing, the qualification rate of the garment size is generally about 80% when the large-batch production is carried out, and the qualification rate of the garment size is even lower by 60% in some cases. By adopting the positioning ironing, each part of the ready-made clothes is flat and free from wrinkles, the sizes of all main parts of the ready-made clothes are ensured to fall within the interval of a positioning frame (0cm, +2.5cm), the excessive stretching of common ironing is effectively avoided, the negative influence of the excessive stretching on shrinkage is reduced, the size and the appearance effect after the positioning ironing are kept to the maximum extent, the shrinkage of the ready-made clothes can be controlled within an ultra-low range, and the size qualification rate of the ready-made clothes during mass production is greatly improved.
The invention also discovers in addition that: when mass ready-made clothes are produced in a centralized manner, due to the difference of the shrinkage rates among the knitted fabric batches, even if the clothes with the same size have certain dimensional deviation before non-ironing, the dimensional deviation still exists after pre-drying; after the technical scheme provided by the invention is adopted to position and iron the ready-made clothes, the size deviation of the ready-made clothes with the same size can be reduced to a small range, and the knitted fabric loops can be fixed in a relatively stable state through the subsequent continuous flat-screen baking. The size of the ready-made clothes prepared by the method can meet the requirement of ordering, the size fluctuation among pieces is very small, the qualified rate of the ready-made clothes size in mass production is greatly improved, and the qualified rate can reach 100%.
In the above method, preferably, when the dyed knitted fabric is pretreated with the nonionic and/or anionic surfactant, the pretreatment temperature is 50 to 95 ℃, and the pretreatment time is 20 to 60 min. The knitted fabric is pretreated to further remove impurities on the cloth surface, particularly the cationic auxiliary agent remained on the cloth surface, so that the negative influence of the cationic auxiliary agent on the combination of the water-repellent and oil-repellent finishing agent and cotton fibers applied to subsequent ready-made clothes is prevented, and the subsequent water-repellent and oil-repellent finishing effect is improved.
In the above method, preferably, the raw material composition comprises, based on the volume of the finishing liquid (i.e., the finishing liquid containing the water-and oil-repellent finishing agent), 5 to 200g/L of the water-and oil-repellent finishing agent, 1 to 100g/L of the first crosslinking agent, 5 to 200g/L of the second crosslinking agent, 1 to 50g/L of the catalyst, and 5 to 100g/L of the softening agent; wherein, the first cross-linking agent comprises one or a combination of more of polyurethane cross-linking agents and isocyanate cross-linking agents; the second crosslinking agent is a resin crosslinking agent; more preferably, the raw material composition of the finishing liquid comprises 30-60g/L of water-oil repellent finishing agent, 1-20g/L of first cross-linking agent, 40-60g/L of second cross-linking agent, 1-15g/L of catalyst and 30-50g/L of softening agent according to the volume of the finishing liquid.
In the technical scheme provided by the invention, the adopted first cross-linking agent can help the water-repellent and oil-repellent finishing agent to be combined with the fibers, so that the initial effect and the washability of the water-repellent and oil-repellent effect of the fabric are improved, the second cross-linking agent can improve the non-ironing washability of the fabric, so that the ready-made clothes can obtain the non-ironing shrink-proof effect, the two cross-linking agents are compounded with the water-repellent and oil-repellent finishing agent for use, so that the fabric can further obtain the non-ironing shrink-proof effect on the basis of water repellency, and the shrink-proof effect is obviously improved compared with the case of only adding the second cross-linking agent.
In the above method, preferably, the resin crosslinking agent includes one or a combination of several of N-methylolamide crosslinking agent and polycarboxylic acid crosslinking agent, but is not limited thereto.
In the above method, the water-and oil-repellent finishing agent may employ a reagent commonly used in the art, and preferably, the water-and oil-repellent finishing agent includes a fluorine-containing water-and oil-repellent finishing agent and/or a fluorine-free water-and oil-repellent finishing agent.
In the above method, preferably, the finishing liquid further comprises one or a combination of several of a penetrating agent, a strong protective agent and a formaldehyde catching agent; more preferably, the concentration of the penetrating agent is 1-5g/L, the concentration of the strong protective agent is 1-30g/L, and the concentration of the formaldehyde catching agent is 1-20 g/L.
In the above method, the catalyst is one or more of metal salt and phosphate, and may include MgCl2But not limited thereto, the catalyst provided by the present invention can accelerate the reaction between the resin crosslinking agent and the fiber. The strength protecting agent, softening agent and penetrating agent may be conventional products in the art, and are not particularly limited, for example, the strength protecting agent may be a polyethylene-based strength protecting agent, the softening agent may be a silicone-based softening agent and/or a fatty acid amide-based softening agent, and the penetrating agent may be a polyoxyethylene ether-based penetrating agent. The strong protective agent has the functions of increasing the lubrication between the fabric yarns and the yarns, reducing the mutual friction coefficient, improving the sewability during the manufacture of ready-made clothes and improving the bulging strength of the fabric to a certain extent; the softening agent has the functions of improving the hand feeling of the garment fabric, improving the bulging strength and the sewability of the fabric, and selecting the softening agent with small influence on the water and oil repellent effect during application; the penetrating agent has the functions of promoting the full absorption of the finishing liquid by the cellulose fiber and improving the physical or chemical combination of the finishing liquid and the cellulose fiber. The formaldehyde scavenger can be combined with free formaldehyde incompletely released by reaction of the resin crosslinking agent to reduceAnd (5) the risk of overproof formaldehyde of the clothes.
In the above method, the soft oil for preventing pin holes preferably includes polyethylene and/or paraffin, but is not limited thereto.
In the above method, preferably, the nonionic and/or anionic surfactant includes one or a combination of several of fatty alcohol polyoxyethylene ether, fatty alcohol polyoxyethylene ether sulfonate, alkylphenol polyoxyethylene ether sulfonate, fatty acid ester polyoxyethylene ether and fatty acid ester polyoxyethylene ether sulfonate, but is not limited thereto.
In the above method, preferably, the performing of the anti-pin-holing treatment on the fabric comprises the following processes: padding the fabric with the anti-pin hole treatment fluid through a setting machine, controlling the setting temperature to be 110-70 ℃, and setting time to be 45s-3 min; wherein, the anti-pin hole treatment fluid comprises 5-30g/L of anti-pin hole soft oil, 1-5g/L of penetrant and 0.1g/L of acetic acid based on the total volume (namely based on the volume of the anti-pin hole treatment fluid).
In the above method, preferably, when the fabric is made into a garment, the non-woven hot-melt adhesive interlining is used as the fabric of the garment ("plain" refers to the interlining of the garment, such as the collar lining, the pocket cover lining and the like), and the shrinkage rate of the control fabric is consistent with that of the main body fabric of the garment; meanwhile, a thread with low shrinkage and high strength is used as a sewing thread, and is preferably one or a combination of more of a polyester PP thread, a polyester core-spun thread and a nylon thread. The PP thread is made of terylene materials and has the performance characteristics of high strength and low elongation.
Preferably, the fabric at the collar and sleeve parts of the ready-made clothes is one or a combination of a plurality of flat machine rib fabric, rib fabric and jacquard fabric; when in use, the hairiness of the fabric at the collar and sleeve parts is ensured to be clean.
In the above method, preferably, the baking temperature is 130-; more preferably, the baking is carried out using a tunnel flat-wire dryer. In the traditional non-ironing process of knitted ready-made clothes, continuous or intermittent suspension type baking is adopted when the ready-made clothes are baked, the ready-made clothes are suspended in a baking furnace, and the body of the shirt is stretched to a certain extent due to the gravity in the drying process, so that the shrinkage result of the ready-made clothes is not favorable; the tunnel type flat net dryer is adopted for baking, so that negative effects of shrinkage of the ready-made clothes due to the fact that the ready-made clothes are stretched under the action of gravity in the baking process are effectively avoided, flat net baking is beneficial to keeping the smooth appearance after positioning ironing, and the ready-made clothes produced in the way have ultralow shrink-proof and smooth appearance effects.
In the method, preferably, the finishing liquid containing the water-repellent and oil-repellent finishing agent is adopted for treatment, the liquid carrying rate of the finished garment after treatment is controlled to be 80-180%, and the method comprises the following steps:
after soaking the ready-made clothes in the finishing liquid, dehydrating the ready-made clothes until the liquid carrying rate is 80-150 percent, and more preferably 90-120 percent;
or uniformly spraying the finishing liquid on ready-made clothes, and controlling the liquid carrying rate to be 120-180%, and more preferably 130-160%.
The research of the invention finds that the amount of the liquid carrying rate of the ready-made clothes is important for the shrink-proof and non-ironing effect of the final ready-made clothes when finishing liquid is applied to the ready-made clothes. When the resin finishing liquid is applied to ready-made clothes in a spraying mode, if the liquid carrying rate is lower than 120%, the knitted clothes of partial styles can have the conditions of incomplete spraying of the cloth body and uneven absorption due to more absorption of materials at thicker parts such as collar and sleeves, the position of the cloth body, a front barrel and the like than that of main body cloth (for example, the manufacturing method of the non-ironing cotton knitted fabric disclosed by CN 1231862A); after the subsequent process baking, the areas with uneven material absorption of the cloth body can have defects such as resin marks and the like; if the liquid carrying rate is higher than 180%, the maximum absorption of the ready-made clothes is exceeded, the waste of finishing liquid is caused, and the drying time is increased. When the technical scheme provided by the invention is adopted for spraying, the liquid carrying rate is controlled to be 120-180%, particularly 130-160%, on one hand, all parts of the ready-made clothes can fully and uniformly absorb the finishing liquid, the drying efficiency of a subsequent procedure is considered, on the other hand, under the liquid carrying rate, cellulose fibers can be fully swelled, in the subsequent pre-drying process, the internal stress between the fibers is fully released in a loose processing mode of roller drying, the loops of the knitted fabric are close to the loose state to the maximum extent, the most stable state is achieved, and the ready-made clothes after being baked can obtain the ultralow shrinkage and non-ironing effects.
In the method, preferably, when the finishing liquid is uniformly sprayed on the ready-made clothes, the spraying speed of the finishing liquid is controlled to be 0.2-1.5L/min, and the clothes homogenizing time is controlled to be 15-30 min. Too fast speed can reduce the uniformity of the material absorption of the ready-made clothes, too slow speed affects the production efficiency, the spraying speed is in the range of 0.2-1.5L/min, and the uniformity of the material absorption of the ready-made clothes is effectively ensured while the production efficiency is considered. The uniformity of the sprayed uniform clothes can further improve the uniformity of ready-made clothes absorbing materials, the difference of liquid carrying rate between pieces can be adjusted and controlled within 3 percent, the uniform clothes time is not suitable to be less than 15 minutes, and the suitable uniform clothes time is 15-30 minutes in consideration of production efficiency and uniformity. The 'uniform clothes' means that after the spray nozzle of the material spraying machine stops spraying materials, the roller continues to rotate so as to enable the liquid carrying rate among ready-made clothes in the roller to be uniformly distributed and reduce the difference among pieces.
In the above method, preferably, when the finishing liquid is uniformly sprayed onto the ready-made clothes, the front side of the ready-made clothes faces the spraying direction of the finishing liquid, so that the front side of the ready-made clothes can be firstly contacted with the finishing liquid and a uniform effect is obtained, and the water and oil repellent effect of the front side of the ready-made clothes is better and more uniform than that of the back side facing the direction of spraying the finishing liquid.
In the above method, preferably, the knitted fabric is a 100% cellulose fiber fabric, or a fabric made of cellulose fibers and other fibers; more preferably, the cellulose fiber comprises one or more of cotton, viscose and tencel; the other fibers include terylene and/or chinlon, but are not limited thereto; for example, the knitted fabric may be an interwoven or blended fabric of cellulosic fibers and polyester and/or nylon.
The invention also provides a water-repellent and oil-repellent wash-and-wear washable shrink-proof knitted garment prepared by the method.
The invention has the beneficial effects that:
1) according to the technical scheme provided by the invention, a positioning ironing mode is adopted, so that each part of the ready-made clothes is flat and free from wrinkles, the negative influence of excessive stretching of common ironing on shrinkage is effectively avoided, and the shrinkage of the finished clothes can reach an ideal effect by combining a subsequent flat net baking mode, and the size of the ready-made clothes can be accurately controlled and corrected;
2) the knitted garment prepared by the technical scheme provided by the invention can reach the following technical indexes:
water repellency: the water repellency test score of the garment before home washing is 95 points or more; 5 times of household washing, the finished clothes have a water repellency test score of 80 points or more (AATCC 22);
water repellency: the water repellency grade of the garment before home washing is 6.0 grade or above, and the water repellency grade of the garment after 5 times of home washing is 5.0 grade or above (AATCC 193);
oil repellency: the oil-repellent grade of the ready-made clothes before home washing is 5.5 grade and above, and the oil-repellent grade of the ready-made clothes after 5 times of home washing is 4.5 grade and above (AATCC 118);
shrinking: after 20 times of household washing, the shrinkage of the garment is within +/-3% plus or minus 3% (AATCC 150); the garment shrinkage after 10 times of family washing is within (-3%) - (1.5%) (GB/T22849-;
cloth surface evenness: after 20 times of household washing, the flatness of the finished clothes is 4 grade or above (AATCC 143);
color change: after 20 times of household washing, the color change of the cloth surface and the collar and the sleeve of the ready-made clothes is 4 grade or above (AATCC gray scale);
pilling property: after 20 times of household washing, the fuzzing and pilling resistance of the cloth body and the collar and the sleeve of the ready-made clothes is more than or equal to grade 4 (ASTMA 3512);
content of formaldehyde: <75ppm (GB-T2912.1).
Drawings
Fig. 1 is a schematic view of localized ironing.
Detailed Description
The technical solutions of the present invention will be described in detail below in order to clearly understand the technical features, objects, and advantages of the present invention, but the present invention is not limited to the practical scope of the present invention.
Example 1
The embodiment provides a method for preparing water-repellent and oil-repellent wash-and-wear washable shrink-proof knitted clothes, which comprises the following steps:
1) fabric treatment: and (2) cleaning the dyed 40 Sx 2 pure cotton single-bead ground knitted fabric, wherein the used cleaning agent is RUCOGEN AIL-C (produced by Ludafu chemical industry), the concentration of the cleaning agent is 2g/L, the cleaning temperature is 60 ℃, the cleaning time is 20min, and the fabric is dried after cleaning.
And (2) processing the fabric by using a setting machine, wherein the processing liquid comprises 20g/L of soft oil RUCO-LUB (produced by Ludafu chemical industry) for preventing needle holes, 1g/L of penetrating agent and 0.1g/L of acetic acid in terms of total volume, the pH value of the fabric surface is controlled to be 6.7, and the bursting strength is 80 PSI.
2) And (3) making ready-made clothes: and (3) making the knitted fabric into a garment.
3) Applying a finishing liquor to the garment: on a full-automatic spraying machine, a certain amount of finishing liquid prepared according to the ready-made clothes liquid carrying rate is uniformly sprayed on the ready-made clothes (the front side of the ready-made clothes faces the direction of spraying the finishing liquid) through a spray head on the spraying machine under the action of an air compressor, and the running rotating speed of the ready-made clothes is controlled in the spraying process so as to control the ready-made clothes liquid carrying rate to be about 150%. When spraying, the front side of the ready-made clothes faces the direction of finishing spraying, the spraying speed of the finishing liquid is 0.5L/min, and the time for uniform coating is 20 min.
The raw material composition of the finishing liquid in this example is shown in table 1.
TABLE 1
4) Pre-baking: and (3) pre-drying the ready-made clothes after the finishing liquid is applied on a roller type dryer, wherein the pre-drying temperature is 60 ℃, and the moisture content of the pre-dried ready-made clothes is controlled to be 20%.
5) Positioning and ironing: and drawing a positioning frame with the same size on the ironing table according to the size data required by each size of the ready-made clothes (namely the size of the ready-made clothes, which is also the size of the pre-baked ready-made clothes). During ironing, the ready-made clothes are placed in a positioning frame (as shown in figure 1), and the ready-made clothes are positioned and ironed by a steam iron according to the size of the drawn positioning frame, so that all parts of the ready-made clothes are ironed without folds; after ironing, the garment has a garment length and girth dimension 0.5cm longer than the prebaked garment (i.e., after ironing, the garment length and girth dimension of the garment is 0.5cm longer than the corresponding dimensions of the orientation frame).
6) Spreading and baking: and flatly paving the scalded ready-made clothes on a tunnel type flat net baking machine for baking, wherein the clothes are required to be flatly paved on a net belt of the baking machine, the baking temperature is 150 ℃, and the baking time is 3 minutes. After the clothes come out of the tail part of the baking machine, the clothes are laid flat and placed, after the ready-made clothes are cooled to room temperature, the ready-made clothes are folded and packaged, and the water-repellent, oil-repellent, wash-free, wash-resistant and shrink-resistant pure cotton single-bead knitted T-shirt can be obtained.
Example 2
The embodiment provides a method for preparing water-repellent and oil-repellent wash-and-wear washable shrink-proof knitted clothes, which comprises the following steps:
the fabric in the embodiment is dyed 40S/1 pure cotton interlock fabric.
1) Fabric treatment: the same as in example 1.
2) And (3) making ready-made clothes: and (3) making the fabric into ready-made clothes.
3) Applying a finishing liquor to the garment: the composition of the raw materials of the finishing liquid is shown in Table 2, and the rest of the operation is the same as that of example 1.
4) Pre-baking: the same as in example 1.
TABLE 2
| Components | Name (R) | Dosage of | Suppliers of goods |
| Fluorine-containing water-repellent and oil-repellent finishing agent | TG-5263 | 50g/L | Dajin Furan chemical Co Ltd |
| First crosslinking agent | FBI | 10g/L | Tuona chemistry |
| Softening agent | JSS | 30g/L | Chemical engineering of mai-chu-ji diagram |
| Second crosslinking agent (modified 2D resin) | PCLN | 60g/L | Onggao chemical Co Ltd |
| Catalyst and process for preparing same | MgCl2 | 12g/L | Fuzhu trade company of Guangzhou city |
| Formaldehyde scavenger | Sq-5861 | 5g/L | Nanjing Shuangquan Tech Co Ltd |
5) Positioning and ironing: the garment length and bust size of the ready-made garment were controlled to be 1.0cm longer than the garment length and bust size of the ready-made garment after prebaking, and the rest of the procedure was the same as in example 1.
6) Spreading and baking: the baking temperature in this example is 140 ℃, the baking time is 4 minutes, and the rest of the operation is the same as that in example 1; the water-repellent and oil-repellent wash-and-wear washable long-sleeved shirt made of pure cotton interlock fabric with ultralow shrinkage is obtained.
Note: the operation method not described in detail in this example is the same as that of example 1.
Example 3
The embodiment provides a method for preparing water-repellent and oil-repellent wash-and-wear washable shrink-proof knitted clothes, which comprises the following steps:
TABLE 3
The fabric in the embodiment is dyed 20S/1 pure cotton plain cloth.
1) Fabric treatment: the same as in example 1.
2) And (3) making ready-made clothes: and (3) making the fabric into ready-made clothes.
3) Applying a finishing liquor to the garment: the composition of the finishing liquid in this example is shown in Table 3, and the rest of the procedure is the same as in example 1.
4) Pre-baking: the same as in example 1.
5) Positioning and ironing: the same as in example 1.
6) Spreading and baking: the baking temperature in this example is 130 ℃, the baking time is 5min, and the rest of the operations are the same as those in example 1; the water-repellent and oil-repellent wash-and-wear washable long-sleeved shirt made of pure cotton plain cloth and with ultralow shrinkage is obtained.
TABLE 4
TABLE 5
The test results of the ultra-low shrinkage knit-wear garment with water and oil repellency and wash-and-wear resistance provided by examples 1, 2 and 3 are shown in table 4:
1) the results of the water-and oil-repellent performance test are shown in Table 4 (test results after 5-time washing of the garment according to the washing method in AATCC 150).
2) The results of the easy-care and shrinkage performance tests are shown in table 5 (test results after 20-time washing of the garment according to AATCC 150).
From the test results, the knitted clothes obtained by the production method can achieve the technical indexes of water-repellent, oil-repellent, wash-free and ultralow shrinkage knitted clothes.
Comparative example 1
The comparative example provides a method for preparing a water and oil repellent garment, comprising the steps of:
1) weaving the 40S multiplied by 2 pure cotton yarn into single-bead ground knitted fabric, boiling, dyeing, dehydrating, scutching and drying the grey fabric.
2) Setting and processing the cloth on a setting machine: padding finishing liquor (controlling the liquor carrying rate to be 70%), drying (90-95 ℃ for 5min), and baking (150 ℃ for 5 min); the raw material composition of the finishing liquid is shown in table 6.
TABLE 6
| Components | Name (R) | Dosage of | Manufacturer of the product |
| Fluorine-containing water-repellent and oil-repellent finishing agent | AFR6 | 80g/L | Ludafu chemical industry |
| Modified 2D resins | PCLN | 40g/L | Onggao chemical Co Ltd |
| Catalyst and process for preparing same | MgCl2 | 8g/L | Fuzhu trade company of Guangzhou city |
| Silicone type soft oil | JSS | 30g/L | Chemical engineering of mai-chu-ji diagram |
3) And (4) performing preshrinking processing on the cloth to obtain a finished knitted fabric product.
4) And (3) preparing the knitted fabric finished product into knitted clothes, and washing the knitted clothes once to obtain the finished clothes with the water and oil repellent effect.
The test results of the knitted pure cotton T-shirt produced by the production methods of comparative example 1 and example 1 are as follows:
1) the results of the water and oil repellency tests are shown in Table 7 (test results after 5-time washing of the garment according to AATCC150 washing method).
2) The results of the easy-care and shrinkage performance tests are shown in table 8 (test results after 20-time washing of the garment according to AATCC150 washing method).
TABLE 7 test results
TABLE 8 test results
From the above comparative test results, it can be seen that the product provided in example 1 has better properties of low shrinkage, less fading, excellent appearance flatness, and pilling resistance, etc. on the basis of comparative example 1.
Comparative example 2
The comparative example provides a method for preparing a water-repellent, oil-repellent, wash-free, wash-resistant, shrink-resistant knitted garment.
TABLE 9
The fabric used in this comparative example was the same as example 1, and the operation was the same as example 1, except that: the orientation of the garment, the rate of finish spray and the leveling time during the finish application to the garment varied as shown in table 9.
From the above results, the effect of the ready-made clothes provided in example 1 is superior to the ready-made clothes provided in comparative example 2 (ready-made clothes 1, 2 and 3), and it can be seen that: the sufficient spraying liquid carrying rate, the front-out, the proper spraying speed and the uniform coating time are very important for the water and oil repellent performance of the product.
Claims (11)
1. A method for preparing water-repellent and oil-repellent wash-and-wear washable shrink-proof knitted clothes comprises the following steps:
pretreating and drying the dyed knitted fabric by adopting a nonionic and/or anionic surfactant;
performing anti-pin hole treatment on the fabric, controlling the pH value of the fabric surface to be 5.0-7.5, and controlling the drum explosion strength to be more than 60 PSI;
after the fabric is made into a garment, treating the garment by using a finishing liquid containing a water-repellent and oil-repellent finishing agent, soaking the garment in the finishing liquid, and dehydrating the garment until the liquid carrying rate is 90-120%, or uniformly spraying the finishing liquid on the garment, wherein the liquid carrying rate is controlled to be 130-160%;
pre-drying the ready-made clothes by adopting a roller dryer, and controlling the moisture content of the pre-dried ready-made clothes to be 5% -40%;
performing positioning ironing and baking on the ready-made garment to obtain water-repellent, oil-repellent, wash-free, shrink-proof knitted garment;
wherein the localized ironing comprises the following processes: drawing a positioning frame with the same size on an ironing table according to the final size required by the ready-made clothes; adopting a steam iron to perform positioning ironing on the ready-made clothes until all parts of the ready-made clothes are flat and have no wrinkles; meanwhile, the size of the main part of the ready-made clothes is ensured to be consistent with the corresponding size on the positioning frame, or the numerical value of the size of the main part of the ready-made clothes exceeding the corresponding size on the positioning frame is (0cm, 2.5 cm); wherein the main parts comprise a shirt length, a chest circumference and a foot circumference;
the baking temperature is 130-180 ℃, and the baking time is 1-10 min; and baking by adopting a tunnel type flat screen dryer.
2. The method according to claim 1, wherein, when the dyed knitted fabric is pretreated with the nonionic and/or anionic surfactant, the temperature of the pretreatment is 50-95 ℃, and the time of the pretreatment is 20-60 min.
3. The method according to claim 1, wherein the raw material composition comprises 5-200g/L of water-oil repellent finishing agent, 1-100g/L of first crosslinking agent, 5-200g/L of second crosslinking agent, 1-50g/L of catalyst and 5-100g/L of softening agent; wherein, the first cross-linking agent comprises one or a combination of more of polyurethane cross-linking agents and isocyanate cross-linking agents; the second crosslinking agent is a resin crosslinking agent.
4. The method of claim 3, wherein the resin crosslinker comprises one or more of N-methylolamide crosslinkers and polycarboxylic acid crosslinkers.
5. The method of claim 3 or 4, wherein the finishing liquor further comprises one or a combination of more of a penetrant, a powerful protective agent and a formaldehyde scavenger.
6. The method of claim 5, wherein the concentration of the penetrant is 1-5g/L, the concentration of the strong protective agent is 1-30g/L, and the concentration of the formaldehyde scavenger is 1-20 g/L.
7. The method of claim 1, wherein the nonionic and/or anionic surfactant comprises one or a combination of fatty alcohol polyoxyethylene ether, fatty alcohol polyoxyethylene ether sulfonate, alkylphenol polyoxyethylene ether sulfonate, fatty acid ester polyoxyethylene ether, and fatty acid ester polyoxyethylene ether sulfonate.
8. The method of claim 1, wherein the anti-pin-holing treatment of the fabric comprises the following processes:
padding the fabric with the anti-pin hole treatment solution, and treating for 45s-3min at 110-70 ℃; wherein the anti-pin hole treatment fluid comprises 5-30g/L of anti-pin hole soft oil, 1-5g/L of penetrating agent and 0.1g/L of acetic acid in terms of total volume.
9. The method according to claim 1, wherein when the finishing liquid is uniformly sprayed on the ready-made clothes, the spraying speed of the finishing liquid is controlled to be 0.2-1.5L/min, and the clothes leveling time is controlled to be 15-30 min.
10. The method according to claim 9, wherein the finishing liquid is uniformly sprayed onto the garment with the front side of the garment facing the direction of spraying of the finishing liquid.
11. A water and oil repellent wash and wear resistant shrink resistant knit garment prepared by the method of any one of claims 1 to 10.
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