Bedding suite

Abstract

The invention provides a bedding suite, and relates to the technical field of household textiles. The bedding suite comprises a quilt cover and a bed sheet. The quilt cover comprises a first fabric layer and a second fabric layer which are sewn together, single-strand yarn with the yarn count of 60-90 S or double-strand yarn with the yarn count of 80-200 S is selected as warp yarn of the first fabric layer, the warp density of the first fabric layer is 120-230 pieces per inch, and the weft density of the first fabric layer is 70-130 pieces per inch; the ratio of the gram weight of the first fabric layer to the gram weight of the second fabric layer is 1.1-1.20; the flatness of the first fabric layer is greater than or equal to level 3, the drip diffusion time of the second fabric layer is less than or equal to 6s, and the air permeability value of the second fabric layer is greater than or equal to 180mm / s; the drop diffusion speed time of the bed sheet is less than or equal to 6s, the flatness is more than or equal to level 3, and the back static friction coefficient of the bed sheet is more than or equal to 0.75. According to the bedding suite, the problem that when a quilt cover and a bed sheet are combined for use, breathability, moisture absorption, softness, flatness and skid resistance cannot be considered at the same time is solved, and the use experience of consumers can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of household textiles, and particularly to a bedding set. Background Art

[0002] At present, the materials of bedding sets are single, and the industry is still in the "one-dimensional comfort" development stage. Most of them focus on breaking through tactile comfort. For example, silicone soft finishing technology is used to improve contact comfort, and sanding treatment technology is used to enhance contact softness and warmth retention. Although the currently available high-end sets have made breakthroughs in single performance, there are still the following technical defects: First, using the same fabric for the duvet cover and the bedsheet results in mutual restriction of performance indicators. For example, improving gloss will affect softness, and enhancing wrinkle resistance will reduce softness. The smooth fabric easily causes the bedsheet and the quilt core to slide. Second, the post-finishing adaptability of the fabric is insufficient. Although traditional silicone finishing can improve the softness of the fabric, it will damage the moisture absorption of the fabric, worsening the water absorption rate to more than 10 seconds. Summary of the Invention

[0003] In view of the above problems existing in the prior art, the present invention provides a bedding set to improve the problem that the duvet cover and the bedsheet in the traditional bedding set cannot take into account air permeability, moisture absorption, softness, and anti-slip and flatness when used in combination.

[0004] To achieve the above object and other related objects, in a first aspect of the present invention, there is provided a bedding set, which includes a duvet cover and a bedsheet. The duvet cover includes a first fabric layer and a second fabric layer stitched together, and a cavity for filling the quilt core is formed between the first fabric layer and the second fabric layer. The warp yarns of the first fabric layer are single yarns with a yarn count of 60-90 English yarns or double yarns with a yarn count of 80-200 English yarns. The warp density of the first fabric layer is 120-230 threads per inch, and the weft density of the first fabric layer is 70-130 threads per inch. The weight ratio of the first fabric layer to the second fabric layer is 1.1-1.2. The flatness of the first fabric layer is ≥3 levels, the water droplet diffusion time of the second fabric layer is ≤6s, and the air permeability value of the second fabric layer is ≥180mm / s. The water droplet diffusion speed time of the bedsheet is ≤6s, the flatness of the bedsheet is ≥3 levels, and the static friction coefficient on the reverse side of the bedsheet is ≥0.75.

[0005] In an embodiment of the present invention, the first fabric layer is prepared by the following method:

[0006] Provide a first grey fabric;

[0007] First pretreatment: Perform singeing, enzyme desizing, and scouring and bleaching on the first grey fabric;

[0008] First caustic mercerization: First, dip the first grey fabric in caustic liquor, and then carry out stretching, width expanding, rinsing, washing, squeezing and drying on the first grey fabric; wherein, the concentration of the caustic liquor is 200 - 230 g / L;

[0009] Enzyme polishing treatment: Place the first grey fabric in a polishing treatment solution for polishing treatment;

[0010] Sizing, softening and setting: Dip the first grey fabric in a sizing solution for sizing. The sizing solution includes 10 - 15 g / L of quaternary ammonium salt softener, 10 - 15 g / L of silicone softener, 2 - 3 g / L of buffer, 20 - 60 g / L of silk protein finishing solution, and 0.1 - 0.3 g / L of acetic acid. The vehicle speed is 40 - 60 m / min, the drying temperature is 110 - 130 °C, and the drying time is 2 - 3 min;

[0011] First post-treatment: Carry out the first calendering treatment, pre-shrinking treatment and the second calendering treatment on the first grey fabric.

[0012] In an embodiment of the present invention, the temperature of the polishing treatment is 50 - 55 °C, and the time of the polishing treatment is 4 - 6 h.

[0013] In an embodiment of the present invention, the second fabric layer is prepared by the following method:

[0014] Provide a second grey fabric;

[0015] Second pre-treatment: Carry out singeing treatment, enzyme desizing treatment and boiling and bleaching treatment on the second grey fabric;

[0016] Second caustic mercerization: First, dip the second grey fabric in caustic liquor, and then carry out stretching, width expanding, rinsing, washing, squeezing and drying on the second grey fabric;

[0017] First softening treatment: Place the second grey fabric in a washing machine, make the wet second grey fabric pat and impact the grid, and at the same time spray a cellulase treatment solution on the second grey fabric;

[0018] Second post-treatment: Carry out the first calendering treatment, pre-shrinking treatment and the second calendering treatment on the second grey fabric.

[0019] In an embodiment of the present invention, placing the second grey fabric in a washing machine, making the wet second grey fabric pat and impact the grid, and at the same time spraying a cellulase treatment solution on the grey fabric includes the following steps:

[0020] Above and below the wet second base fabric after being impregnated with the cellulase treatment liquid, airflows are respectively sprayed onto the second base fabric to make the second base fabric impact the grid, and at the same time, the cellulase treatment liquid is sprayed onto the second base fabric through nozzles on both the upper and lower sides of the second base fabric; wherein, the running speed of the washing machine is 12 - 30 m / min, the flow rate of the airflows is 100 - 500 m / min, and the angle between the nozzle and the second base fabric is 90 - 160°.

[0021] In an embodiment of the present invention, the concentration of the cellulase treatment liquid is 20 - 50 g / L, the pH value of the cellulase treatment liquid is 5 - 7, the temperature of the cellulase treatment liquid is 50°C - 55°C, and the treatment time is 20 - 40 min.

[0022] In an embodiment of the present invention, the concentration of the alkali solution for the second caustic mercerization treatment is 170 - 180 g / L.

[0023] In an embodiment of the present invention, the bedsheet is prepared by the following method:

[0024] Provide a third base fabric;

[0025] Third pretreatment: Singeing treatment, enzyme desizing treatment and scouring and bleaching treatment are carried out on the third base fabric;

[0026] Second softening treatment: Place the third base fabric in a washing machine, make the wet third base fabric pat and impact the grid, and at the same time, spray the cellulase treatment liquid onto the third base fabric;

[0027] Third post-treatment: Carry out the first calendering treatment, preshrinking treatment and the second calendering treatment on the third base fabric.

[0028] In an embodiment of the present invention, placing the third base fabric in a washing machine, making the wet third base fabric pat and impact the grid, and at the same time, spraying the cellulase treatment liquid onto the third base fabric includes the following steps:

[0029] Above and below the wet third base fabric after being impregnated with the cellulase treatment liquid, airflows are respectively sprayed onto the third base fabric to make the third base fabric impact the grid, and at the same time, the cellulase treatment liquid is sprayed onto the base fabric through nozzles on both the upper and lower sides of the third base fabric; wherein, the running speed of the washing machine is 12 - 30 m / min, the flow rate of the airflows is 100 - 500 m / min, and the angle between the nozzle and the third base fabric is 90 - 160°.

[0030] In an embodiment of the present invention, the concentration of the cellulase treatment liquid is 15 - 50 g / L, the pH value of the cellulase treatment liquid is 5 - 7, the temperature of the cellulase treatment liquid is 50°C - 55°C, and the treatment time is 20 - 40 min.

[0031] The quilt cover of the bedding set of the present invention includes a first fabric layer and a second fabric layer sewn together. The first fabric layer has good glossiness and flatness, good glossiness and is not easy to wrinkle, and has good visual comfort. The second fabric layer has good moisture absorption and perspiration discharge. The second fabric layer is arranged close to the body to timely discharge the sweat produced by the human body, and transfer it to the outer layer for dissipation, so that the skin surface remains dry and the discomfort caused by sweat sticking to the skin is reduced, thereby improving the comfort of sleep. The bed sheet has good hygroscopicity and good wrinkle resistance, and the friction coefficient of the back of the bed sheet is large, which is not easy to slide, and can improve the comfort of sleep. The bedding set of the present application alleviates the problem that the moisture absorption and perspiration discharge of the quilt cover and the bed sheet are not taken into account at the same time, and can greatly enhance the consumer's user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a structural schematic diagram of a bedding set in one embodiment of the present invention;

[0034] Figure 2 is a flow chart of the preparation of the first fabric layer of the present invention in one embodiment;

[0035] Figure 3 is a flow chart of the preparation of the second fabric layer of the present invention in one embodiment;

[0036] Figure 4 The figure is a flow chart of the preparation of a bed sheet according to an embodiment of the present invention.

[0037] Component number description:

[0038] 100, first fabric layer; 200, second fabric layer; 300, bed sheet. DETAILED DESCRIPTION

[0039] The following specific examples illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. It should also be understood that the terms used in the embodiments of the present invention are for describing specific implementation manners and are not intended to limit the protection scope of the present invention. The test methods without specific conditions noted in the following embodiments are generally carried out under conventional conditions or according to the conditions recommended by each manufacturer.

[0040] When the embodiments give a numerical range, it should be understood that unless otherwise specified in the present invention, any value at both ends of each numerical range and any value between the two ends can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention, based on the understanding of those skilled in the art of the prior art and the description of the present invention, any methods, devices, and materials of the prior art similar to or equivalent to the methods, devices, and materials in the embodiments of the present invention can also be used to implement the present invention.

[0041] It should be noted that the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not intended to limit the scope of implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope in which the present invention can be implemented.

[0042] Please refer to Figure 1 , this application provides a bedding set, which includes a duvet cover and a sheet. The duvet cover includes a first fabric layer and a second fabric layer stitched together. A cavity for filling a duvet core is formed between the first fabric layer and the second fabric layer. The warp yarns of the first fabric layer are single yarns with a yarn count of 60 - 90 English counts or double yarns with a yarn count of 80 - 200 English counts. The warp density of the first fabric layer is 120 - 230 threads per inch, and the weft density of the first fabric layer is 70 - 130 threads per inch; the weight ratio of the first fabric layer to the second fabric layer is 1.10 - 1.2; the flatness of the first fabric layer ≥ 3 grades, the water droplet diffusion time of the second fabric layer ≤ 6 s, and the air permeability value of the second fabric layer ≥ 180 mm / s. The water droplet diffusion speed time of the sheet ≤ 6 s, the flatness of the sheet ≥ 3 grades, and the static friction coefficient of the reverse side of the sheet ≥ 0.75. When in use, the first fabric layer is arranged above the duvet core, and the second fabric layer is arranged below the duvet core, that is, the second fabric layer contacts the human body. The front side of the sheet is the side that contacts the human body, and the reverse side of the sheet is the side that contacts the mattress.

[0043] The first fabric layer has good gloss and flatness, with good luster and is not easily wrinkled, providing good visual comfort. The second fabric layer has good moisture absorption and sweat wicking properties. By setting the second fabric layer close to the body, the sweat generated by the human body can be promptly drained away and transferred to the outer layer for dissipation, keeping the skin surface dry and reducing the discomfort caused by sweat sticking to the skin, thereby improving the comfort of sleep. The bedsheet has good moisture absorption and excellent anti-wrinkle properties, and the coefficient of friction on the reverse side of the bedsheet is relatively large, making it not easy to slide, which can improve the comfort of sleep. The first fabric layer, the second fabric layer and the bedsheet of the bedding set in this application have different functions, and have the characteristics of good luster, skin-friendly softness, moisture absorption and breathability, easy to care, anti-wrinkle and flat, and non-slip and non-falling, which can greatly enhance the user experience of consumers.

[0044] Please refer to Figure 2 , in one embodiment, the first fabric layer is prepared by the following method:

[0045] S11. Provide the first grey fabric;

[0046] S12. First pretreatment: Singeing, enzyme desizing and scouring and bleaching treatments are carried out on the first grey fabric;

[0047] S13. First caustic mercerization treatment: First, the first grey fabric is impregnated with caustic liquor, and then the first grey fabric is stretched, widened, rinsed, washed flat and squeezed and dried; among them, the concentration of the caustic liquor is 200 - 230 g / L;

[0048] S14. Enzyme polishing treatment: Place the first grey fabric in the polishing treatment solution;

[0049] S15. Sizing, drawing and soft setting: The softener includes 10 - 15 g / L of quaternary ammonium salt softener, 10 - 15 g / L of silicone softener, 2 - 3 g / L of buffer, 20 - 60 g / L of silk protein finishing solution, 0.1 - 0.3 g / L of acetic acid, the drying temperature is 110 - 130 °C, and the vehicle speed is 40 - 60 m / min;

[0050] S16. First post-treatment: Carry out the first calendering treatment, pre-shrinking treatment and the second calendering treatment on the first grey fabric.

[0051] In step S11, the warp of the first grey fabric is selected as a single yarn with a yarn count of 60 - 90 English counts or a double yarn with a yarn count of 80 - 200 English counts, the warp density of the first grey fabric is 120 - 230 picks per inch, and the weft density of the first grey fabric is 70 - 130 picks per inch. Exemplarily, long-staple cotton is selected for the first grey fabric.

[0052] In step S12, in some embodiments, the singeing treatment is a double-sided singeing treatment. The flame temperature of the singeing treatment is 800 - 880 °C, such as any value within 800 - 880 °C like 800 °C, 850 °C, or 880 °C, etc.; the vehicle speed of the singeing treatment is 120 - 150 m / min, such as any value within 120 - 150 m / min like 120 m / min, 130 m / min, 140 m / min, or 150 m / min, etc.

[0053] In some embodiments, the enzymatic desizing treatment includes the following steps: Immerse the first greige fabric after singeing treatment in deionized water at 75 - 95 °C for 3 - 5 min, then dip and roll the first greige fabric in the enzymatic desizing treatment liquid twice, with a liquor pickup rate of 90 - 120 wt%, stack and wind it at a temperature of 45 - 55 °C for 4 - 6 h, wash the first greige fabric in water at a temperature of 90 - 100 °C for 6 - 10 min, wash it 2 - 3 times, and dry it after washing. Washing can inactivate the enzymatic desizing treatment liquid. Exemplarily, the enzymatic desizing treatment liquid includes any one or more of α - amylase, glucoamylase, debranching enzyme, polyvinyl alcohol degrading enzyme, and cellulase, and the pH value of the enzymatic desizing treatment liquid is 5.5 - 7.0, such as 5.5, 6, or 7.

[0054] In some embodiments, the scouring and bleaching treatment includes a scouring treatment and a peroxide bleaching treatment. The scouring treatment includes the following steps: Place the first greige fabric after enzymatic desizing treatment in the scouring treatment liquid and treat it at a temperature of 90 - 110 °C for 50 - 60 min. For example, the temperature of the scouring treatment can be any value within 90 - 110 °C like 90 °C, 100 °C, or 110 °C, etc., and the time of the scouring treatment can be any value within 50 - 60 min like 50 min, 55 min, or 60 min, etc. The peroxide bleaching treatment includes the following steps: Place the first greige fabric after scouring treatment in the peroxide bleaching liquid, heat the peroxide bleaching liquid at a rate of 1 - 3 °C / min to 90 - 110 °C and keep it warm for 30 - 60 min. For example, the heating temperature is any value within 1 - 3 °C / min like 1 °C / min, 2 °C / min, or 3 °C / min, etc., the holding temperature is any value within 90 - 110 °C like 90 °C, 100 °C, or 110 °C, etc., and the holding time is any value within 30 - 60 min like 30 min, 50 min, or 60 min, etc. After the holding is completed, adjust the pH value of the peroxide bleaching liquid to neutral and then take it out and wash it clean. Exemplarily, the scouring treatment liquid includes: 30 - 50 g / L of NaOH, 2 - 5 g / L of complexing agent, 3 - 10 g / L of refining agent; the peroxide bleaching liquid includes 4 - 8 g / L of hydrogen peroxide, 1 - 3 g / L of penetrant JFC, 2 - 12 g / L of hydrogen peroxide stabilizer, and 0.2 - 3 g / L of NaOH.

[0055] In step S13, the first greige cloth after scouring and bleaching is subjected to the first caustic mercerization treatment. In some embodiments, a cloth clip mercerizing machine commonly used in the art is selected for the caustic mercerization treatment. Exemplarily, the caustic liquor is a sodium hydroxide solution, and the concentration of the sodium hydroxide solution is 200 - 230 g / L, such as any value in 200 - 230 g / L like 200 g / L, 210 g / L, or 230 g / L, etc. After the width expanding treatment, most of the residual caustic liquor on the first greige cloth is first rinsed off by shower rinsing, and then the first greige cloth is placed in a water washing box for flat washing. Exemplarily, the temperature during shower rinsing is 90 - 95 °C, such as any value in 90 - 95 °C like 90 °C, 93 °C, or 95 °C, etc. During flat washing, the first greige cloth is successively washed step by step through 2 - 4 water washing boxes. The temperature of the first-stage water washing box is 80 - 85 °C, such as any value in 80 - 85 °C like 80 °C, 83 °C, or 85 °C, etc. Thereafter, the temperature of the next-stage water washing box is 5 - 10 °C lower than the previous stage, such as any value in 5 - 10 °C like 5 °C, 8 °C, or 10 °C, etc. After the cotton fibers are mercerized, the cross-section changes from a kidney shape to a circular shape, which can improve the luster and enhance the smoothness. Appropriately increasing the concentration of the caustic liquor can improve the wrinkle resistance of the fabric.

[0056] In step S14, enzyme polishing treatment is carried out using a jig dyeing machine. Exemplarily, based on the weight percentage of the first greige cloth, the polishing treatment solution includes 0.25 - 0.5% (owf) of cellulase and 0.5 - 1% (owf) of acetic acid. For example, the content of cellulase can be any value in 0.25 - 0.5% (owf) like 0.25% (owf), 0.35% (owf), or 0.5% (owf), etc., and for example, the content of acetic acid can be any value in 0.5 - 1% (owf) like 0.5% (owf), 0.7% (owf), or 1% (owf), etc.; the temperature of the polishing treatment is 50 - 55 °C, such as any value in 50 - 55 °C like 50 °C, 52 °C, or 55 °C, etc.; the time of the polishing treatment is 4 - 6 h, such as any value in 4 - 6 h like 4 h, 5 h, or 6 h, etc. For example, the cellulase selected is the CAN enzyme of Genencor.

[0057] In some embodiments, after the first greige fabric is treated with cellulase for polishing, the first greige fabric is immersed in an alkaline solution for treatment to inactivate the cellulase. Exemplarily, the alkaline solution is a sodium carbonate solution, the pH value of the alkaline solution is 9 to 10, such as any value in the range of 9 to 10 like 9, 9.5 or 10, the temperature of the alkaline solution is 70 to 80 °C, such as any value in the range of 70 to 80 °C like 70 °C, 75 °C or 80 °C, and the inactivation time of the cellulase is 15 to 20 min, such as any value in the range of 15 to 20 min like 15 min, 18 min or 20 min. After inactivating the cellulase, the first greige fabric is washed with water. Exemplarily, the temperature of the water washing treatment is 50 to 60 °C, such as any value in the range of 50 to 60 °C like 50 °C, 55 °C or 60 °C.

[0058] In step S15, in some embodiments, the impregnation rate of the first greige fabric after padding and drawing is 80 to 100%, such as any value in the range of 80 to 100% like 80%, 90% or 100%. The silk fibroin finishing solution is, for example, TASTEX SSU04 of Tana.

[0059] In step S16, in some embodiments, the speed of the first calendering treatment is 70 to 90 m / min, such as any value in the range of 70 to 90 m / min like 70 m / min, 80 m / min or 90 m / min. The temperature of the first calendering treatment is 100 to 115 °C, such as any value in the range of 100 to 115 °C like 100 °C, 110 °C or 115 °C; the linear pressure is 150 to 180 N / mm, such as any value in the range of 150 to 180 N / mm like 150 N / mm, 160 N / mm, 170 N / mm or 180 N / mm; the pre-shrinking treatment is to send the first greige fabric after the first calendering treatment into a pre-shrinking machine, the pressure of the pressure-bearing roller of the pre-shrinking machine is 12 to 15 kg, such as any value in the range of 12 to 15 kg like 12 kg, 13 kg, 14 kg or 15 kg, the temperature of the pre-shrinking treatment is 100 to 120 °C, such as any value in the range of 100 to 120 °C like 110 °C, 110 °C or 120 °C, and the speed of the pre-shrinking machine is 25 to 60 m / min, such as any value in the range of 25 to 60 m / min like 25 m / min, 40 m / min, 50 m / min or 60 m / min; the speed of the second calendering treatment is 60 to 70 m / min, such as any value in the range of 60 to 70 m / min like 60 m / min, 65 m / min or 70 m / min, the temperature of the second calendering treatment is 90 to 100 °C, such as any value in the range of 90 to 100 °C like 90 °C, 95 °C or 100 °C, and the linear pressure is 180 to 200 N / mm, such as any value in the range of 180 to 200 N / mm like 180 N / mm, 190 N / mm or 200 N / mm.

[0060] In some embodiments, after the first greige fabric is subjected to caustic mercerization, the preparation of the first fabric layer further includes subjecting the first greige fabric to tentering pre-setting treatment. The tentering pre-setting treatment synchronously acts on the first greige fabric through high-temperature hot air and mechanical tension to ensure consistent width dimensions during subsequent processing. The tentering pre-setting treatment can adjust the fabric width, improve the flatness and handle, while enhancing the dyeing and printing uniformity, and correcting the wrinkles caused by previous processes (such as bleaching and mercerization), laying a foundation for stable subsequent production.

[0061] In some embodiments, after the enzyme polishing treatment, the preparation process of the first fabric layer further includes subjecting the first greige fabric to dyeing treatment or printing treatment.

[0062] By reasonably designing and matching the warp and weft densities and the post-treatment process, the gloss and wrinkle resistance of the first fabric layer can be improved. The appearance flatness of the first fabric layer is ≥3 grades, and good flatness can still be maintained after multiple washes. The gloss of the fabric is related to the color. In the case of the same color, the gloss of the first fabric layer is greatly improved. In order to improve the gloss of the first fabric layer, if the warp of the first greige fabric is a ply yarn, mercerized warp can be selected.

[0063] Please refer to Figure 3 , in an embodiment, the second fabric layer is obtained by the following method:

[0064] S21. Provide a second greige fabric;

[0065] S22. Second pretreatment: Subject the second greige fabric to singeing treatment, enzyme desizing treatment, and boiling and bleaching treatment;

[0066] S23. Second caustic mercerization: First impregnate the second greige fabric with caustic liquor, and then tenter, expand, rinse, flat wash, and roll and dry the second greige fabric;

[0067] S24. First softening treatment: Place the second greige fabric in a washing machine, make the wet second greige fabric beat and impact the grille, and at the same time spray a cellulase treatment solution on the second greige fabric;

[0068] S25. Second post-treatment: Subject the second greige fabric to the first calendering treatment, pre-shrinking treatment, and the second calendering treatment.

[0069] In step S21, in some embodiments, the second greige fabric is selected, for example, long-staple cotton.

[0070] In step S22, in some embodiments, the singeing treatment is a front-and-back singeing treatment. The flame temperature of the singeing treatment is 800 - 880 °C, such as any value in 800 - 880 °C like 800 °C, 850 °C or 880 °C, etc.; the vehicle speed of the singeing treatment is 120 - 150 m / min, such as any value in 120 - 150 m / min like 120 m / min, 130 m / min, 140 m / min or 150 m / min, etc.

[0071] In some embodiments, the enzyme desizing treatment includes the following steps: Immerse the singed semi-finished fabric in deionized water at 75 - 95 °C for 3 - 5 min, then dip the semi-finished fabric into the enzyme desizing treatment liquid twice and pad it twice, with the padding rate being 90 - 120 wt%, stack it in a roll and keep it warm at 45 - 55 °C for 4 - 6 h, wash the semi-finished fabric with water at 90 - 100 °C for 6 - 10 min, wash it 2 - 3 times, and dry it after washing. Washing can inactivate the enzyme desizing treatment liquid. Exemplarily, the enzyme desizing treatment liquid includes any one or more of α-amylase, glucoamylase, debranching enzyme, polyvinyl alcohol degrading enzyme and cellulase, and the pH value of the enzyme desizing treatment liquid is 5.5 - 7.0, such as 5.5, 6 or 7.

[0072] In some embodiments, the scouring and bleaching treatment includes a scouring treatment and a hydrogen peroxide bleaching treatment. The scouring treatment includes the following steps: Place the semi-finished fabric after the enzyme desizing treatment into the scouring treatment liquid and treat it at 90 - 110 °C for 50 - 60 min. For example, the temperature of the scouring treatment can be any value in 90 - 110 °C like 90 °C, 100 °C or 110 °C, etc., and the time of the scouring treatment can be any value in 50 - 60 min like 50 min, 55 min or 60 min, etc. The hydrogen peroxide bleaching treatment includes the following steps: Place the semi-finished fabric after the scouring treatment into the hydrogen peroxide bleaching liquid, heat the hydrogen peroxide bleaching liquid from 1 - 3 °C / min to 90 - 110 °C and keep it warm for 30 - 60 min. For example, the heating temperature is any value in 1 - 3 °C / min like 1 °C / min, 2 °C / min or 3 °C / min, etc., the heat preservation temperature is any value in 90 - 110 °C like 90 °C, 100 °C or 110 °C, etc., and the heat preservation time is any value in 30 - 60 min like 30 min, 50 min or 60 min, etc. After the heat preservation ends, adjust the pH value of the hydrogen peroxide bleaching liquid to neutral and then take it out and wash it clean. Exemplarily, the scouring treatment liquid includes: 30 - 50 g / L of NaOH, 2 - 5 g / L of complexing agent, 3 - 10 g / L of refining agent; the hydrogen peroxide bleaching liquid includes 4 - 8 g / L of hydrogen peroxide, 1 - 3 g / L of penetrant JFC, 2 - 12 g / L of hydrogen peroxide stabilizer, 0.2 - 3 g / L of NaOH.

[0073] In step S23, in some embodiments, the second greige fabric after scouring and bleaching is subjected to a second caustic mercerization treatment. In some embodiments, a cloth clip mercerizing machine commonly used in the art is selected for the caustic mercerization treatment. Exemplarily, the caustic liquor is a sodium hydroxide solution, and the concentration of the sodium hydroxide solution is 170-180 g / L, such as any value in 170-180 g / L like 170 g / L, 175 g / L, or 180 g / L. After the width expanding treatment, most of the residual caustic liquor on the second greige fabric is first rinsed off by showering, and then the second greige fabric is placed in a water washing box for flat washing. Exemplarily, the temperature during showering is 90-95 °C, such as any value in 90-95 °C like 90 °C, 93 °C, or 95 °C. During flat washing, the second greige fabric is successively washed step by step through 2-4 water washing boxes. The temperature of the first-stage water washing box is 80-85 °C, such as any value in 80-85 °C like 80 °C, 83 °C, or 85 °C, and the temperature of the next-stage water washing box is 5-10 °C lower than the previous stage, such as any value in 5-10 °C like 5 °C, 8 °C, or 10 °C.

[0074] In step S24, the second greige fabric after caustic mercerization is placed in a water washing machine, and airflows are sprayed on the second greige fabric above and below it respectively, and at the same time, a cellulase treatment solution is sprayed on the second greige fabric through nozzles on both the upper and lower sides of the second greige fabric. Here, the second greige fabric is laid flat, and the upper and lower sides respectively refer to the upper and lower sides of the large surface of the second greige fabric.

[0075] The second greige fabric reciprocates along its length direction under the blowing of the airflow, and the second greige fabric as a whole moves in the direction from the fabric inlet storage tank to the fabric outlet storage tank in the water washing machine. In some embodiments, the running speed of the water washing machine is 12-30 m / min, such as any value in 12-30 m / min like 12 m / min, 20 m / min, or 30 m / min, to ensure the coherence and stability of the entire treatment process. A grille is provided in the water washing machine, and the second greige fabric repeatedly impacts the grille under the blowing of the airflow, and the flow rate of the airflow is 100-500 m / min, such as any value in 100-500 m / min like 100 m / min, 300 m / min, or 500 m / min. The liquid levels of the fabric inlet storage tank and the fabric outlet storage tank are 900-1200 L, such as any value in 900-1200 L like 900 L, 1000 L, or 1200 L. Exemplarily, the liquid feeding amount of the water washing machine is 45-68 L / m, such as any value in 45-68 L / m like 45 L / m, 60 L / m, or 68 L / m. That is, 45-68 L of cellulase treatment solution is added per meter of the second greige fabric.

[0076] In some embodiments, the angle between the nozzle and the second fabric is 90 to 160°, such as any value within 90 to 160° like 90°, 120° or 160°. At this time, the number of nozzles is not limited. Exemplarily, the number of nozzles is 4, and two nozzles are respectively arranged on the upper and lower sides of the second fabric. The spraying ranges of the two nozzles can completely cover the width of the second fabric. The fabric inlet storage tank and the fabric outlet storage tank are communicated. The cellulase treatment liquid dripping from the second fabric falls into the fabric inlet storage tank and the fabric outlet storage tank, and the spray head sprays the second fabric again to realize the recycling of the cellulase treatment liquid. The nozzle pressure is controlled by a variable-frequency water pump. For example, the maximum frequency of the water pump motor is 50 Hz, and it is set to 20 to 80% of the maximum frequency.

[0077] The atomization treatment of the treatment liquid by the nozzle can: Improve uniformity: The atomized treatment liquid can be more evenly distributed on the fabric surface, enabling the cellulase to act on the fabric more uniformly, which helps to improve the consistency and uniformity of the polishing effect. Enhance penetrability: The tiny liquid droplets are more likely to penetrate into the internal structure of the fabric, allowing the cellulase to better contact the gaps between the fibers, thereby improving its working efficiency. Reduce dosage: Since the atomization technology can make the liquid exist in a very tiny form, compared with the traditional dipping or padding methods, the usage amount will be greatly reduced, saving costs and reducing environmental pollution. Speed up the reaction rate: When the cellulase is atomized into extremely small particles, the contact area with air is increased, which helps to improve the activation efficiency of the cellulase, and thus may shorten the entire treatment time. Improve the hand feeling: By controlling the atomization degree and the application method (application angle and intensity), the softness and other physical properties of the final product can be adjusted to a certain extent, and thus a better hand feeling can be obtained.

[0078] In some embodiments, the concentration of the cellulase treatment liquid is 20 to 50 g / L, such as any value within 20 to 50 g / L like 20 g / L, 30 g / L, 40 g / L or 50 g / L. The pH value of the cellulase treatment liquid is 5 to 7, such as pH can be any value within 5 to 7 like 5, 6 or 7, and the treatment time is 20 to 40 min, such as any value within 20 to 40 min like 20 min, 30 min or 40 min. The temperature of the cellulase treatment liquid is 50 to 55 °C, such as any value within 50 to 55 °C like 50 °C, 52 °C or 55 °C. Exemplarily, the cellulase treatment liquid selects the CAN enzyme of Genencor.

[0079] The liquid combines with a high-speed air flow to form a continuous spray and sprays towards the fabric, so that the fabric always maintains a uniformly moist state for flapping and impact. At the same time, it is placed under the injection of the cellulase treatment solution, so that the cellulase constantly enters and exits the inside and outside of the yarn. The natural cellulose fabric repeatedly impacts with the grid under the impact of the high-frequency flowing liquid, enabling the cellulase to fully enter the fabric for action. In this process, the cellulase repeatedly shuttles along the thickness direction of the fabric inside the fabric (shearing action of the spray), with high-speed exchange, so as to achieve the full reaction of the fabric with the cellulase under the action of strong mechanical force. The role of cellulase is to catalytically hydrolyze cellulose. Under the conditions of the biopolishing process, the cellulase and mechanical impact act simultaneously, and its hydrolysis effect weakens the microfibrils on the fiber surface, and the fluff is removed under the cooperation of the machinery and liquid flow, so as to achieve the purpose of biopolishing the fabric. The dyeing and finishing process of this application can take into account the sufficiency of cellulase treatment and the slack treatment, eliminate the internal stress inside the fabric, release the fluffiness of the fabric, and thus increase the softness of the fabric. At the same time, due to the shearing action of the cooperation between the spray and the grid, the gas (air) and the cellulase treatment solution (cellulase polishing finishing solution) are fully mixed to form mist-like micro-droplets, increasing the contact area between the cellulase and the fabric. Under the hot and humid conditions, using the chemical action of cellulase polishing and superimposing the shearing action of the nozzle and the grid, the internal stress in the fabric is eliminated, so as to achieve the effect of increasing the soft, smooth hand feeling and elasticity of the fabric. The magnitude of the shearing force is related to the angle between the nozzle and the second fabric. When the angle between the nozzle and the second fabric is 90°, the shearing force generated by the cellulase treatment solution is the largest, and the cellulase is more likely to penetrate into the fabric.

[0080] In some embodiments, after spraying the cellulase treatment solution onto the second fabric, the second fabric is immersed in an alkaline solution for treatment to inactivate the cellulase. Exemplarily, the alkaline solution is selected as a sodium carbonate solution, the pH value of the alkaline solution is 9 to 10, such as any value in 9 to 10 like 9, 9.5 or 10, the temperature of the alkaline solution is 80 to 85 °C, such as any value in 80 to 85 °C like 80 °C, 83 °C or 85 °C, and the inactivation time of the cellulase is 10 to 15 min, such as any value in 10 to 15 min like 10 min, 13 min or 15 min. After inactivating the cellulase, the fabric is subjected to a water washing treatment. Exemplarily, the temperature of the water washing treatment is 50 to 60 °C, such as any value in 50 to 60 °C like 50 °C, 55 °C or 60 °C.

[0081] In step S25, in some embodiments, the speed of the first calendering treatment is 70 - 90 m / min, such as any value within 70 - 90 m / min like 70 m / min, 80 m / min, or 90 m / min. The temperature of the first calendering treatment is 100 - 115 °C, such as any value within 100 - 115 °C like 100 °C, 110 °C, or 115 °C; the linear pressure is 150 - 180 N / mm, such as any value within 150 - 180 N / mm like 150 N / mm, 160 N / mm, 170 N / mm, or 180 N / mm. The pre-shrinking treatment is to feed the second fabric of the first calendering treatment into a pre-shrinking machine. The pressure of the pressure-bearing roller of the pre-shrinking machine is 12 - 15 kg, such as any value within 12 - 15 kg like 12 kg, 13 kg, 14 kg, or 15 kg. The temperature of the pre-shrinking treatment is 100 - 120 °C, such as any value within 100 - 120 °C like 110 °C, 110 °C, or 120 °C. The speed of the pre-shrinking machine is 25 - 60 m / min, such as any value within 25 - 60 m / min like 25 m / min, 40 m / min, 50 m / min, or 60 m / min. The speed of the second calendering treatment is 60 - 70 m / min, such as any value within 60 - 70 m / min like 60 m / min, 65 m / min, or 70 m / min. The temperature of the second calendering treatment is 90 - 100 °C, such as any value within 90 - 100 °C like 90 °C, 95 °C, or 100 °C. The linear pressure is 180 - 200 N / mm, such as any value within 180 - 200 N / mm like 180 N / mm, 190 N / mm, or 200 N / mm.

[0082] In some embodiments, after the second fabric undergoes caustic mercerization treatment, the processing technology further includes a tentering pre-sizing treatment for the second fabric. The function of the tentering pre-sizing treatment on the second fabric is the same as that of the first fabric, and details will not be elaborated here.

[0083] In some embodiments, the preparation process of the second fabric layer further includes a dyeing treatment or a printing treatment for the second fabric. Among them, the dyeing treatment or the printing treatment can be carried out before spraying the cellulase treatment liquid on the second fabric, or after spraying the cellulase treatment liquid on the second fabric. If the dyeing treatment or the printing treatment is carried out before spraying the cellulase treatment liquid on the second fabric, the color of the fabric after dyeing or printing will become lighter. Therefore, attention should be paid to the color shade after lightening when matching colors.

[0084] When preparing the second fabric layer, appropriately reducing the concentration of the caustic liquor during the caustic mercerization treatment can enable the second fabric layer to have good hygroscopicity while maintaining a soft handfeel. The water droplet diffusion time of the second fabric layer prepared in the above manner is ≤ 6 s; the air permeability value is ≥ 180 mm / s, and it still has good hygroscopic and breathable properties after multiple washes.

[0085] See also Figure 4 In one embodiment, the bed sheet is made by the following method:

[0086] S31, providing a third grey cloth;

[0087] S32, third pre-treatment: performing singeing treatment, enzyme desizing treatment and scouring and bleaching treatment on the third grey cloth;

[0088] S33, second softening treatment: placing the third grey cloth in a washing machine, making the wet third grey cloth hit the grid, and spraying cellulase treatment liquid on the third grey cloth at the same time;

[0089] S34, third post-processing: performing a first calendering process, a pre-shrinking process and a second calendering process on the third grey cloth.

[0090] In step S31, the third grey cloth is, for example, long-staple cotton.

[0091] In step S32, in some embodiments, the singeing treatment is a forward and reverse singeing treatment, and the flame temperature of the singeing treatment is 800-880°C, such as 800°C, 850°C or 880°C, any value between 800°C and 880°C; the vehicle speed of the singeing treatment is 120-150m / min, such as 120m / min, 130m / min, 140m / min or 150m / min, any value between 120 and 150m / min.

[0092] In some embodiments, the enzyme desizing treatment comprises the following steps: placing the third blank after singeing treatment in deionized water at 75-95°C for 3-5 minutes, then placing the third blank in the enzyme desizing treatment solution for two immersions and two rollings, the rolling rate is 90-120wt%, and the third blank is kept warm and rolled for 4-6 hours at a temperature of 45-55°C, and the third blank is washed at a temperature of 90-100°C for 6-10 minutes, washed 2-3 times, and dried after washing. Washing can inactivate the enzyme desizing treatment solution. Exemplarily, the enzyme desizing treatment solution includes any one or more of α-amylase, saccharifying enzyme, debranching enzyme, polyvinyl alcohol degrading enzyme and cellulase, and the pH value of the enzyme desizing treatment solution is 5.5-7.0, for example, 5.5, 6 or 7.

[0093] In some embodiments, the scouring and bleaching treatment includes a scouring treatment and an oxygen bleaching treatment. The scouring treatment includes the following steps: placing the third greige fabric after enzymatic desizing treatment in a scouring treatment solution, and treating it at a temperature of 90 - 110°C for 50 - 60 minutes. For example, the temperature of the scouring treatment can be any value in the range of 90 - 110°C such as 90°C, 100°C, or 110°C, and the time of the scouring treatment can be any value in the range of 50 - 60 minutes such as 50 minutes, 55 minutes, or 60 minutes. The oxygen bleaching treatment includes the following steps: placing the third greige fabric after scouring treatment in an oxygen bleaching solution, heating the oxygen bleaching solution to 90 - 110°C at a rate of 1 - 3°C / min and holding for 30 - 60 minutes. For example, the heating rate is any value in the range of 1 - 3°C / min such as 1°C / min, 2°C / min, or 3°C / min, the holding temperature is any value in the range of 90 - 110°C such as 90°C, 100°C, or 110°C, and the holding time is any value in the range of 30 - 60 minutes such as 30 minutes, 50 minutes, or 60 minutes. After the holding is completed, the pH value of the oxygen bleaching solution is adjusted to neutral and then taken out and washed. Exemplarily, the scouring treatment solution includes: 30 - 50 g / L of NaOH, 2 - 5 g / L of complexing agent, and 3 - 10 g / L of scouring agent; the oxygen bleaching solution includes 4 - 8 g / L of hydrogen peroxide, 1 - 3 g / L of penetrant JFC, 2 - 12 g / L of hydrogen peroxide stabilizer, and 0.2 - 3 g / L of NaOH.

[0094] In step S34, place the third greige fabric in a water washing machine, spray air currents on the third greige fabric above and below it respectively, and at the same time, spray a cellulase treatment solution on the third greige fabric through nozzles on both the upper and lower sides of the third greige fabric. Here, the third greige fabric is laid flat, and the above and below respectively refer to the above and below of the large surface of the third greige fabric.

[0095] The third greige fabric reciprocates along its length direction under the blowing of the air flow, and the third greige fabric as a whole moves in the water washing machine from the fabric inlet storage tank to the fabric outlet storage tank. In some embodiments, the speed of the water washing machine is 12 - 30 m / min, such as any value within 12 - 30 m / min like 12 m / min, 20 m / min or 30 m / min, etc., to ensure the coherence and stability of the entire treatment process. A grille is provided in the water washing machine, and the third greige fabric repeatedly impacts the grille under the blowing of the air flow. The flow rate of the air flow is 100 - 500 m / min, such as any value within 100 - 500 m / min like 100 m / min, 300 m / min or 500 m / min, etc. The liquid levels of the fabric inlet storage tank and the fabric outlet storage tank are 900 - 1200 L, such as any value within 900 - 1200 L like 900 L, 1000 L or 1200 L, etc. Exemplarily, the liquid inlet volume of the water washing machine is 45 - 68 L / m, such as any value within 45 - 68 L / m like 45 L / m, 60 L / m or 68 L / m, etc. That is, 45 - 68 L of cellulase treatment liquid is added per meter of the third greige fabric.

[0096] In some embodiments, the angle between the nozzle and the third greige fabric is 90 - 160°, such as any value within 90 - 160° like 90°, 120° or 160°, etc. There is no limit on the number of nozzles at this time. Exemplarily, the number of nozzles is 4, and two nozzles are respectively arranged on the upper and lower sides of the third greige fabric, and the spraying ranges of the two nozzles can completely cover the width of the third greige fabric. The fabric inlet storage tank and the fabric outlet storage tank are connected, and the cellulase treatment liquid dripping from the third greige fabric falls into the fabric inlet storage tank and the fabric outlet storage tank, and the spray head sprays the third greige fabric again to realize the recycling of the cellulase treatment liquid. The nozzle pressure is controlled by a variable frequency water pump. For example, the maximum frequency of the water pump motor is 50 Hz, and it is set to 20 - 80% of the maximum frequency.

[0097] The atomization treatment of the treatment liquid by the nozzle can: Improve uniformity: The atomized treatment liquid can be more evenly distributed on the fabric surface, enabling the cellulase to act more uniformly on the third greige fabric, which helps to improve the consistency and uniformity of the polishing effect. Enhance penetration: The fine liquid droplets are more likely to penetrate into the internal structure of the fabric, allowing the cellulase to better contact the gaps between the fibers, thereby improving its working efficiency. Reduce dosage: Since the atomization technology can make the liquid exist in a very tiny form, compared with the traditional dipping or padding methods, the usage amount will be greatly reduced, saving costs and reducing environmental pollution. Accelerate the reaction speed: When the cellulase is atomized into extremely small particles, the contact area with air is increased, which helps to improve the activation efficiency of the cellulase, and thus may shorten the entire treatment time. Improve the hand feeling: By controlling the atomization degree and the application method (application angle and intensity), the softness and other physical properties of the final product can be adjusted to a certain extent, and then a better hand feeling can be obtained.

[0098] In some embodiments, the concentration of the cellulase treatment solution is 15 - 50 g / L, such as any value in 20 - 50 g / L like 15 g / L, 30 g / L, 40 g / L or 50 g / L. The pH value of the cellulase treatment solution is 5 - 7, such as any value in 5 - 7 like pH 5, pH 6 or pH 7, the treatment time is 20 - 40 min, such as any value in 20 - 40 min like 20 min, 30 min or 40 min. The temperature of the cellulase treatment solution is 50 - 55 °C, such as any value in 50 - 55 °C like 50 °C, 52 °C or 55 °C. Exemplarily, the cellulase treatment solution selects the CAN enzyme of Genencor.

[0099] The liquid combines with a high-speed air flow to form a continuous spray and sprays towards the fabric, so that the fabric always maintains a uniformly wet state for slapping and impact, and at the same time is placed under the injection of the cellulase treatment solution, enabling the cellulase to constantly enter and exit the inside and outside of the yarn. The natural cellulose fabric repeatedly impacts with the grid under the impact of the high-frequency flowing liquid, enabling the cellulase to fully enter the fabric interior to act. During this process, the cellulase repeatedly shuttles along the fabric thickness direction inside the fabric (shearing action of the spray), with high-speed exchange, so as to achieve the full reaction of the fabric with the cellulase under the action of intense mechanical force. The function of the cellulase is to catalytically hydrolyze cellulose. Under the conditions of the bio-polishing process, the cellulase and mechanical impact act simultaneously, and its hydrolysis effect weakens the microfibrils on the fiber surface, and the fluff is removed under the coordination of the machine and liquid flow, so as to achieve the purpose of bio-polishing the fabric. The dyeing and finishing process of the present application can take into account the sufficiency of cellulase treatment and the slack treatment, eliminate the internal stress inside the fabric, release the fluffiness of the fabric, and thus increase the softness of the fabric. At the same time, due to the shearing action of the cooperation between the spray and the grid, the gas (air) and the cellulase treatment solution (cellulase polishing finishing solution) are fully mixed to form mist-like micro-droplets, increasing the contact area between the cellulase and the fabric. Under the humid heat conditions, by using the chemical action of cellulase polishing and superimposing the shearing action of the nozzle and the grid, the internal stress in the fabric is eliminated, so as to achieve the effect of increasing the soft, smooth hand feeling and elasticity of the fabric. The magnitude of the shearing force is related to the angle between the nozzle and the third base fabric. When the angle between the nozzle and the third base fabric is 90°, the shearing force generated by the cellulase treatment solution is the largest, and the cellulase is more likely to penetrate into the base fabric.

[0100] In some embodiments, after spraying the cellulase treatment solution onto the third fabric, the second and third fabrics are immersed in an alkaline solution for treatment to inactivate the cellulase. Exemplarily, the alkaline solution is a sodium carbonate solution, the pH value of the alkaline solution is 9 to 10, such as any value in the range of 9 to 10 like 9, 9.5 or 10, the temperature of the alkaline solution is 80 to 85 °C, such as any value in the range of 80 to 85 °C like 80 °C, 83 °C or 85 °C, and the inactivation time of the cellulase is 10 to 15 min, such as any value in the range of 10 to 15 min like 10 min, 13 min or 15 min. After inactivating the cellulase, the third fabric is subjected to a water washing treatment. Exemplarily, the temperature of the water washing treatment is 50 to 60 °C, such as any value in the range of 50 to 60 °C like 50 °C, 55 °C or 60 °C.

[0101] In step S35, in some embodiments, the vehicle speed of the first calendering treatment is 70 to 90 m / min, such as any value in the range of 70 to 90 m / min like 70 m / min, 80 m / min or 90 m / min. The temperature of the first calendering treatment is 100 to 115 °C, such as any value in the range of 100 to 115 °C like 100 °C, 110 °C or 115 °C; the linear pressure is 150 to 180 N / mm, such as any value in the range of 150 to 180 N / mm like 150 N / mm, 160 N / mm, 170 N / mm or 180 N / mm; the pre-shrinking treatment is to feed the third fabric of the first calendering treatment into a pre-shrinking machine, the pressure of the pressure-bearing roller of the pre-shrinking machine is 12 to 15 kg, such as any value in the range of 12 to 15 kg like 12 kg, 13 kg, 14 kg or 15 kg, the temperature of the pre-shrinking treatment is 100 to 120 °C, such as any value in the range of 100 to 120 °C like 110 °C, 110 °C or 120 °C, and the vehicle speed of the pre-shrinking machine is 25 to 60 m / min, such as any value in the range of 25 to 60 m / min like 25 m / min, 40 m / min, 50 m / min or 60 m / min; the vehicle speed of the second calendering treatment is 60 to 70 m / min, such as any value in the range of 60 to 70 m / min like 60 m / min, 65 m / min or 70 m / min, the temperature of the second calendering treatment is 90 to 100 °C, such as any value in the range of 90 to 100 °C like 90 °C, 95 °C or 100 °C, and the linear pressure is 180 to 200 N / mm, such as any value in the range of 180 to 200 N / mm like 180 N / mm, 190 N / mm or 200 N / mm.

[0102] In some embodiments, after the third fabric is subjected to an oxygen bleaching treatment, the process of preparing the bedsheet further includes a tentering pre-shrinking and setting treatment on the third fabric. The effect of the tentering pre-shrinking and setting treatment on the third fabric is the same as that on the first fabric, and details will not be elaborated here.

[0103] In some embodiments, the preparation process of the bed sheet further includes dyeing or printing the third grey fabric. The dyeing or printing may be performed before or after the cellulase treatment liquid is sprayed on the third grey fabric. If the dyeing or printing is performed before the cellulase treatment liquid is sprayed on the third grey fabric, the color of the fabric after dyeing or printing will become lighter, so when matching the color, attention should be paid to the color after the lightening.

[0104] The bed sheet prepared by the above method retains the waist-round curved structure of cotton fiber, which can increase the friction on the back side and has good air permeability. The drip diffusion time of the bed sheet is ≤6s, and the air permeability is good after multiple washings.

[0105] In some embodiments, the wrinkle resistance of the bed sheet can be improved by increasing the density of the warp and weft yarns of the third grey cloth. The higher warp yarn density makes the warp yarns on the surface of the fabric arranged closely, increases the strength and stability of the bed sheet, and makes it less likely to deform when subjected to pressure. At the same time, the warp yarn can provide more contact points and friction, and maintain good anti-slip performance. Since the front warp yarn of the bed sheet occupies the main part, in order to improve the wrinkle resistance of the bed sheet, when the warp yarn of the second grey cloth is a strand, mercerized yarn is used. In order to improve the friction coefficient of the back of the bed sheet, the warp and weft of the second grey cloth are inlaid with yarns of different thicknesses to increase the concave and convexity of the bed sheet, thereby increasing the static friction coefficient of the bed sheet, improving the anti-slip ability, and thus reducing the running phenomenon of the bed sheet. Due to the presence of yarns of different counts in the weft yarn and the density characteristics of the fabric, the back of the bed sheet also presents a certain degree of unevenness and roughness in the macroscopic view. This macroscopic roughness can increase the contact area between the bed sheet and the mattress. According to the principle of friction, the larger the contact area between the bed sheet and the mattress, the greater the friction, thereby improving the anti-slip effect of the bed sheet. In other embodiments of the shaft rod, the reverse side of the bed sheet can also be roughened to increase the roughness of the reverse side of the bed sheet, increase the static friction of the reverse side of the bed sheet, and reduce the phenomenon of bed sheet running.

[0106] The technical scheme of the present invention is described in detail below through several specific examples. Unless otherwise specified, the raw materials and reagents used in the following examples are all commercially available products, or can be prepared by conventional methods in the art, and the instruments used in the examples are all commercially available.

[0107] Example 1

[0108] In this embodiment, the preparation method of the first fabric layer is as follows:

[0109] S11, providing a first grey cloth;

[0110] S12, pre-treat the first grey cloth. First, singe the first grey cloth in a positive and negative direction, with a flame temperature of 800°C and a vehicle speed of 150m / min. Then, perform enzyme desizing treatment on the first grey cloth: first, place the first grey cloth in 95°C hot water for 5 minutes, then place the first grey cloth in the enzyme desizing treatment solution for two dips and two rolls, with a rolling rate of 120wt%, keep warm and roll it at 55°C for 6 hours, wash the first grey cloth at 90°C for 10 minutes, wash it 3 times for enzyme inactivation, and dry it after washing. Finally, perform scouring and bleaching treatment on the first grey cloth: place the first grey cloth after desizing in a scouring treatment solution at 90°C for 60 minutes, place the first grey cloth after scouring in an oxygen bleaching solution, and heat it to 110°C at a rate of 3°C / min and keep it warm for 60 minutes, adjust the pH value of the oxygen bleaching solution to neutral, and then take it out and wash it. The enzyme desizing solution is α-amylase, and the pH value of the enzyme desizing solution is 5.5. The scouring solution includes: NaOH 30g / L, complexing agent 2g / L, refining agent 3g / L; the oxygen bleaching solution includes: hydrogen peroxide 4g / L, penetrant JFC 1g / L, hydrogen peroxide stabilizer 2g / L, NaOH 0.2g / L.

[0111] S13, alkali mercerization treatment. First, the first grey cloth is dipped in alkali solution, and then the first grey cloth is stretched, expanded, rinsed, flat washed, squeezed and dried. The concentration of the alkali solution is 200g / L, the rinsing temperature is 90°C, the flat washing includes 4-stage washing tanks, the temperature of the first-stage washing tank is 85°C, and the water temperature of the subsequent washing tanks is gradually reduced, and the temperature of the latter-stage washing tank is 5°C lower than that of the previous stage.

[0112] S14, enzyme polishing treatment: Use a dyeing machine to perform enzyme polishing treatment, and place the first blank in the polishing treatment liquid. In terms of weight percentage of the first grey cloth, the polishing treatment liquid includes 0.5% (owf) cellulase and 0.5% (owf) acetic acid. The temperature of the polishing treatment liquid is 50°C, and the polishing treatment time is 6 hours. The first blank treated with enzyme polishing is placed in a sodium carbonate solution at 70°C and soaked for 20 minutes to inactivate the cellulase. The pH value of the sodium carbonate solution is 9. In this embodiment, the cellulase is Genenco CAN enzyme.

[0113] S15, tentering pre-setting treatment;

[0114] S16, printing and dyeing;

[0115] S17. Pad and stretch the first greige fabric in the sizing and stretching liquid, which includes 10 g / L of quaternary ammonium salt softener, 13 g / L of silicone softener, 2.5 g / L of buffer, 60 g / L of silk protein finishing liquid, and 0.1 g / L of acetic acid. The pad pick-up rate is 100%, the vehicle speed is 40 m / min, and it is dried at 110°C for 3 min for setting. In this example, the silk protein finishing liquid selected is TASTEX SSU 04 from Tonatex.

[0116] S18. Perform post-treatment on the first greige fabric. Conduct the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the first greige fabric in sequence. The vehicle speed of the first calendering treatment is 70 m / min, the temperature of the first calendering treatment is 100°C, and the linear pressure is 150 N / mm; feed the first greige fabric after the first calendering treatment into the pre-shrinking machine. The pressure of the pressure-bearing roller of the pre-shrinking machine is 12 kg, the temperature is set at 120°C, and the vehicle speed of the pre-shrinking machine is 60 m / min; the vehicle speed of the second calendering treatment is 60 m / min, the temperature of the second calendering treatment is 100°C, and the linear pressure is 180 N / mm.

[0117] In this example, the preparation method of the second fabric layer is as follows:

[0118] S21. Provide a second greige fabric;

[0119] S22. Pretreat the second greige fabric: Perform singeing treatment, enzyme desizing treatment, and scouring and bleaching treatment on the second greige fabric;

[0120] S23. Alkali mercerization treatment on the second greige fabric: First, pad the second greige fabric with alkali liquor, and then perform stretching, width expanding, rinsing, washing, and squeezing and drying on the second greige fabric;

[0121] S24. Stenter setting treatment;

[0122] S25. Printing and dyeing;

[0123] S26. Softening treatment on the second greige fabric. Place the second greige fabric after alkali mercerization treatment in the washing machine, spray air currents on the second greige fabric above and below it respectively, and at the same time spray the cellulase treatment liquid on the second greige fabric from both the upper and lower sides through nozzles. In this example, the liquid level of the cloth storage tank is 900 L, the liquid inlet volume of the washing machine is 45 L / m, the vehicle speed of the washing machine is 12 m / min, the flow rate of the air current is 100 m / min, the angle between the nozzle and the second greige fabric is 90°, the concentration of the cellulase treatment liquid is 20 g / L, the pH value of the cellulase treatment liquid is 5, the treatment time is 20 min, the temperature of the cellulase treatment liquid is 50°C, and the cellulase treatment liquid selected is CAN enzyme from Genencor.

[0124] After spraying the second greige fabric with the cellulase treatment solution, the second greige fabric is immersed in a sodium carbonate solution to inactivate the cellulase. The pH value of the sodium carbonate solution is 9, the temperature of the sodium carbonate solution is 80 °C, and the inactivation time of the cellulase is 15 min. After inactivating the cellulase, the greige fabric is washed with water, and the temperature of the water washing treatment is 60 °C.

[0125] S27. Post-treatment of the second greige fabric: The second greige fabric is subjected to the first calendering treatment, pre-shrinking treatment, and the second calendering treatment.

[0126] Steps S21 to S22 are the same as steps S11 to S12. The difference between step S23 and step S13 is that the concentration of the lye is 180 g / L. Steps S24 to S25 are the same as steps S15 to S16, and step S27 is the same as step S18.

[0127] In this embodiment, the preparation method of the bedsheet is as follows:

[0128] S31. Provide the third greige fabric;

[0129] S32. Pretreat the third greige fabric;

[0130] S33. Tentering and pre-setting treatment;

[0131] S34. Printing and dyeing;

[0132] S35. Softening treatment of the third greige fabric.

[0133] S36. Post-treatment of the third greige fabric.

[0134] The difference between the preparation method of the bedsheet and the preparation method of the second fabric layer is that the mercerization treatment is not carried out.

[0135] In this embodiment, the first greige fabric is made of 120s / 2×60s long-staple cotton, the warp and weft yarn densities are 230×100 per inch respectively, five-harness satin, and the 120s / 2 ply yarn is a mercerized yarn (lye concentration 230 g / L, time 30 s, air pressure 4 Pa). The second greige fabric is made of 120s / 2×60s long-staple cotton, the warp and weft yarn densities are 200×100 per inch respectively, five-harness satin. The third greige fabric is made of 60s×(40s + 21s) long-staple cotton, the warp and weft yarn density is 230×120 per inch, and the ratio of 40s to 21s in the weft yarn is 1:3.

[0136] In this embodiment, the performance tests of the first fabric layer, the second fabric layer, and the bedsheet in the bedding set are shown in Table 1:

[0137] Table 1 Performance tests of the first fabric layer, the second fabric layer, and the bedsheet in the bedding set of Example 1

[0138]

[0139] In this embodiment, the gram weight of the first fabric layer is 140 GSM, and the gram weight of the second fabric layer is 127 GSM. The flatness of the first fabric layer after 5 washes is Grade 3, and the flatness of the bedsheet after 5 washes is 3.2. It can be seen that the first fabric layer and the bedsheet still maintain good flatness after multiple washes.

[0140] Comparative Example 1

[0141] In this comparative example, the first greige cloth, the second greige cloth, and the third greige cloth are all made of 120s / 2×60s long-staple cotton, with warp and weft yarn densities of 200×98 per inch and a five-harness satin weave.

[0142] The difference in the preparation method of the first fabric layer in this comparative example from that of Example 1 is as follows: In step S13, the concentration of the caustic soda solution during the caustic mercerization treatment is 180 g / L. In step S17, the sizing and drawing solution includes 10 g / L of quaternary ammonium salt softener, 13 g / L of organosilicon softener, 2.5 g / L of buffer, and 0.1 g / L of acetic acid. In this comparative example, the preparation methods of the second fabric layer and the bedsheet are the same as those of the first fabric layer.

[0143] In this comparative example, the performance tests of the first fabric layer, the second fabric layer, and the bedsheet in the bedding set are shown in Table 2:

[0144] Table 2 Performance Tests of the First Fabric Layer, the Second Fabric Layer, and the Bedsheet in the Bedding Set of Comparative Example 1

[0145]

[0146] In this comparative example, the flatness of the first fabric layer after 5 washes is Grade 2, and the flatness of the bedsheet after 5 washes is 2.5. Compared with Example 1, the flatness of the first fabric layer and the bedsheet has decreased significantly. The color of the dyeing and printing in Comparative Example 1 is the same as that in Example 1. The same-color glossiness before washing in Example 1 has increased by 15% compared with that in Comparative Example 1, and the glossiness of the first fabric layer in Example 1 remains good after multiple washes, while the glossiness of the first fabric layer in Comparative Example 1 decreases severely after washing.

[0147] Example 2

[0148] In this embodiment, the preparation method of the first fabric layer is as follows:

[0149] S11. Provide the first greige cloth;

[0150] S12, pre-treat the first grey cloth. First, singe the first grey cloth in a positive and negative direction, with the flame temperature of 880℃ and the vehicle speed of 120m / min during the singeing treatment. Then, perform enzyme desizing treatment on the first grey cloth: first, place the first grey cloth in 75℃ hot water for 4min, then place the first grey cloth in the enzyme desizing treatment solution for two immersions and two rollings, with the rolling liquid rate of 100wt%, keep warm and roll it at 45℃ for 5h, wash the first grey cloth at 100℃ for 6min, wash it 3 times for enzyme inactivation, and dry it after washing. Finally, perform scouring and bleaching treatment on the first grey cloth: place the first grey cloth after desizing in the scouring treatment solution at 100℃ for 55min, place the first grey cloth after scouring treatment in the oxygen bleaching solution, and heat it to 90℃ at a rate of 1℃ / min and keep it warm for 50min, adjust the pH value of the oxygen bleaching solution to neutral, and then take it out and wash it. The enzyme desizing solution is α-amylase, and the pH value of the enzyme desizing solution is 7. The scouring solution includes: NaOH 50g / L, complexing agent 3g / L, refining agent 7g / L; the oxygen bleaching solution includes: hydrogen peroxide 8g / L, penetrant JFC 3g / L, hydrogen peroxide stabilizer 12g / L, NaOH 2g / L.

[0151] S13, alkali mercerization treatment. First, the first grey cloth is dipped in alkali solution, and then the first grey cloth is stretched, expanded, rinsed, flat washed, squeezed and dried. Among them, the concentration of the alkali solution is 230g / L, the rinsing temperature is 95℃, and the flat washing includes 3-stage washing tanks. The temperature of the first-stage washing tank is 82℃, and the water temperature of the subsequent washing tanks is gradually reduced, and the temperature of the latter-stage washing tank is 10℃ lower than that of the previous stage.

[0152] S14, enzyme polishing treatment: Use a dyeing machine to perform enzyme polishing treatment, and place the first blank in the polishing treatment liquid. Calculated by weight percentage of the first grey cloth, the polishing treatment liquid includes 0.3% (owf) cellulase and 1% (owf) acetic acid. The temperature of the polishing treatment liquid is 55°C, and the polishing treatment time is 4h. The first blank treated with enzyme polishing is placed in an 80°C sodium carbonate solution and soaked for 15 minutes to inactivate the cellulase. The pH value of the sodium carbonate solution is 10. In this embodiment, the cellulase is Genenco CAN enzyme.

[0153] S15, tentering pre-setting treatment;

[0154] S16, printing and dyeing;

[0155] S17, the first grey cloth is dipped into a slurry and drawn liquid, the slurry and drawn liquid includes 15 g / L of quaternary ammonium softener, 10 g / L of silicone softener, 3 g / L of buffer, 40 g / L of silk protein finishing liquid, and 0.3 g / L of acetic acid, the immersion liquid rate is 90%, the vehicle speed is 60 m / min, and the fabric is dried at 130° C. for 2 min to be fixed. In this embodiment, the silk protein finishing liquid is TASTEX SSU 04 of Tona.

[0156] S18. Perform post-treatment on the first fabric blank. Perform the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the first fabric blank in sequence. The vehicle speed of the first calendering treatment is 90 m / min, the temperature of the first calendering treatment is 110 °C, and the linear pressure is 170 N / mm; Feed the first fabric blank after the first calendering treatment into a pre-shrinking machine. The pressure of the pressure-bearing roller of the pre-shrinking machine is 15 kg, the temperature is set at 110 °C, and the vehicle speed of the pre-shrinking machine is 40 m / min; The vehicle speed of the second calendering treatment is 70 m / min, the temperature of the second calendering treatment is 95 °C, and the linear pressure is 190 N / mm.

[0157] In this embodiment, the preparation method of the second fabric layer is as follows:

[0158] S21. Provide a second fabric blank;

[0159] S22. Pretreat the second fabric blank: Perform singeing treatment, enzyme desizing treatment, and scouring and bleaching treatment on the second fabric blank;

[0160] S23. Perform caustic mercerization treatment on the second fabric blank: First impregnate the second fabric blank with caustic liquor, and then perform stretching, width expanding, rinsing, washing, and water squeezing and drying on the second fabric blank;

[0161] S24. Perform stentering and pre-setting treatment;

[0162] S25. Perform printing and dyeing;

[0163] S26. Perform softening treatment on the second fabric blank. Jet air currents above and below the wet second fabric blank after impregnating it with a cellulase treatment solution to make the second fabric blank impact a grid, and at the same time spray the cellulase treatment solution onto the second fabric blank through nozzles on both the upper and lower sides of the second fabric blank. In this embodiment, the liquid level of the cloth storage tank is 1000 L, the liquid inlet volume of the washing machine is 55 L / m, the vehicle speed of the washing machine is 30 m / min, the flow rate of the air current is 500 m / min, the angle between the nozzle and the second fabric blank is 160°, the concentration of the cellulase treatment solution is 50 g / L, the pH value of the cellulase treatment solution is 7, the treatment time is 40 min, the temperature of the cellulase treatment solution is 55 °C, and the cellulase treatment solution selects the CAN enzyme of Genencor.

[0164] After spraying the cellulase treatment solution onto the second fabric blank, soak the second fabric blank in a sodium carbonate solution to inactivate the cellulase. The pH value of the sodium carbonate solution is 10, the temperature of the sodium carbonate solution is 83 °C, and the inactivation time of the cellulase is 10 min. After inactivating the cellulase, perform water washing treatment on the fabric blank, and the temperature of the water washing treatment is 55 °C.

[0165] S27. Perform post-treatment on the second fabric blank: Perform the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the second fabric blank.

[0166] Steps S21 to S22 are the same as steps S11 to S12. The difference between step S23 and step S13 is that the concentration of the lye is 180 g / L. Steps S24 to S25 are the same as steps S15 to S16, and step S27 is the same as step S18.

[0167] In this embodiment, the preparation method of the bedsheet is as follows:

[0168] S31. Provide the third greige cloth;

[0169] S32. Pretreat the third greige cloth;

[0170] S33. Tentering and pre-setting treatment;

[0171] S34. Printing and dyeing;

[0172] S35. Softening treatment of the third greige cloth.

[0173] S36. Post-treat the third greige cloth.

[0174] The difference between the preparation method of the bedsheet and the preparation method of the second fabric layer is that mercerization treatment is not carried out.

[0175] In this embodiment, the first greige cloth is made of 60s×60s long-staple cotton, with warp and weft yarn densities of 230×115 per inch respectively, and a five-harness satin weave; the second greige cloth is made of 60s×60s long-staple cotton, with warp and weft yarn densities of 200×98 per inch respectively, and a five-harness satin weave; the third greige cloth is made of 60s×60s long-staple cotton, with a warp and weft yarn density of 230×115 per inch and a five-harness satin weave.

[0176] In this embodiment, the performance tests of the first fabric layer, the second fabric layer and the bedsheet in the bedding set are shown in Table 3:

[0177] Table 3 Performance tests of the first fabric layer, the second fabric layer and the bedsheet in the bedding set of Example 2

[0178]

[0179] In this embodiment, the gram weight of the first fabric layer is 147 GSM, and the gram weight of the second fabric layer is 122 GSM. The flatness of the first fabric layer after 5 washes is 3, and the flatness of the bedsheet after 5 washes is 3.3. It can be seen that the first fabric layer and the bedsheet still maintain good flatness after multiple washes.

[0180] Comparative Example 2

[0181] In this comparative example, the first greige cloth, the second greige cloth and the third greige cloth are all made of 60s×60s long-staple cotton, with warp and weft yarn densities of 200×98 per inch respectively, and a five-harness satin weave.

[0182] The difference in the preparation method of the first fabric layer in this comparative example from that of Example 2 lies in that: in step S13, the concentration of the caustic soda solution during the caustic mercerization treatment is 180 g / L, and in step S17, the quaternary ammonium salt softener is 15 g / L, the silicone softener is 10 g / L, the buffer is 3 g / L, and the acetic acid is 0.3 g / L, excluding the silk protein finishing agent. In this comparative example, the preparation methods of the second fabric layer and the bedsheet are the same as those of the first fabric layer in this comparative example.

[0183] In this comparative example, the performance tests of the first fabric layer, the second fabric layer, and the bedsheet in the bedding set are shown in Table 4:

[0184] Table 4 Performance tests of the first fabric layer, the second fabric layer, and the bedsheet in the bedding set of Comparative Example 2

[0185]

[0186] In this comparative example, the flatness level of the first fabric layer after 5 washes is 2.1, and the flatness level of the bedsheet after 5 washes is 2.5. Compared with Example 2, the flatness of the first fabric layer and the bedsheet has decreased significantly. The color of the dyeing and printing in Comparative Example 2 is the same as that in Example 2, and the same-color glossiness before washing in Example 2 is increased by 23% compared with that in Comparative Example 2. Moreover, the glossiness of the first fabric layer in Example 2 remains good after multiple washes, while the glossiness of the first fabric layer in Comparative Example 2 decreases severely after washing.

[0187] Example 3

[0188] In this example, the preparation method of the first fabric layer is as follows:

[0189] S11. Provide the first grey cloth;

[0190] S12. Pretreat the first greige fabric. First, singeing is carried out on the first greige fabric in a one-sided and one-reverse manner. When singeing, the flame temperature is 840 °C and the vehicle speed is 140 m / min. Subsequently, enzymatic desizing treatment is carried out on the first greige fabric: first, place the first greige fabric in hot water at 85 °C and soak it for 3 min, then place the first greige fabric in the enzymatic desizing treatment liquid for two dips and two rolls, with a liquor pickup rate of 90 wt%, keep it in a roll at 50 °C for 4 h, wash the first greige fabric at 95 °C for 8 min, wash it 2 times for enzyme inactivation treatment, and dry it after washing. Finally, scouring and bleaching treatment is carried out on the first greige fabric: place the desized first greige fabric in the scouring treatment liquid and treat it at 110 °C for 50 min, place the first greige fabric after scouring treatment in the oxygen bleaching liquid, and heat it up to 100 °C at a rate of 2 °C / min and keep it warm for 30 min. After adjusting the pH value of the oxygen bleaching liquid to neutral, take it out and wash it clean. Among them, the enzymatic desizing treatment liquid is α-amylase, and the pH value of the enzymatic desizing treatment liquid is 6. The scouring treatment liquid includes: 40 g / L of NaOH, 5 g / L of complexing agent, and 10 g / L of scouring agent; the oxygen bleaching liquid includes: 6 g / L of hydrogen peroxide, 2 g / L of penetrant JFC, 7 g / L of hydrogen peroxide stabilizer, and 3 g / L of NaOH.

[0191] S13. Caustic mercerization treatment. First, dip and roll the first greige fabric in the caustic liquor, and then carry out stretching, width expanding, rinsing, flat washing, and squeezing and drying on the first greige fabric. Among them, the concentration of the caustic liquor is 220 g / L, the rinsing temperature is 92 °C, the flat washing includes 2-stage water washing boxes, the temperature of the first-stage water washing box is 80 °C, the water temperature of the subsequent water washing boxes decreases gradually, and the temperature of the latter-stage water washing box is 7 °C lower than that of the previous stage.

[0192] S14. Enzyme polishing treatment: Use a jig dyeing machine for enzyme polishing treatment, and place the first greige fabric in the polishing treatment liquid. Calculated by the weight percentage of the first greige fabric, the polishing treatment liquid includes 0.25% (owf) of cellulase and 0.8% (owf) of acetic acid. The temperature of the polishing treatment liquid is 53 °C, and the polishing treatment time is 5 h. Place the first greige fabric after enzyme polishing treatment in a sodium carbonate solution at 80 °C and soak it for 15 min to inactivate the cellulase. The pH value of the sodium carbonate solution is 10. In this embodiment, the cellulase is Genencor CAN enzyme.

[0193] S15. Tentering and pre-setting treatment;

[0194] S16. Printing and dyeing;

[0195] S17. Pad and stretch the first greige fabric in the sizing and stretching liquid. The sizing and stretching liquid includes 12 g / L of quaternary ammonium salt softener, 15 g / L of silicone softener, 2 g / L of buffer, 20 g / L of silk protein finishing liquid, and 0.2 g / L of acetic acid. The pad pick-up rate is 80%, the vehicle speed is 50 m / min, and it is dried at 120 °C for 2.5 min for setting. In this example, the silk protein finishing liquid selected is TASTEX SSU 04 of Tana.

[0196] S18. Perform post-treatment on the first greige fabric. Perform the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the first greige fabric in sequence. The vehicle speed of the first calendering treatment is 80 m / min, the temperature of the first calendering treatment is 115 °C, and the linear pressure is 180 N / mm; Feed the first greige fabric after the first calendering treatment into the pre-shrinking machine. The pressure of the pressure-bearing roller of the pre-shrinking machine is 14 kg, the temperature is set at 100 °C, and the vehicle speed of the pre-shrinking machine is 25 m / min; The vehicle speed of the second calendering treatment is 65 m / min, the temperature of the second calendering treatment is 90 °C, and the linear pressure is 200 N / mm.

[0197] In this example, the preparation method of the second fabric layer is as follows:

[0198] S21. Provide the second greige fabric;

[0199] S22. Pretreat the second greige fabric: Perform singeing treatment, enzymatic desizing treatment, and scouring and bleaching treatment on the second greige fabric;

[0200] S23. Perform caustic mercerization treatment on the second greige fabric: First, pad the second greige fabric with caustic liquor, and then perform stretching, width expanding, rinsing, washing, and water squeezing and drying on the second greige fabric;

[0201] S24. Perform tentering and pre-setting treatment;

[0202] S25. Print and dye;

[0203] S26. Soften the second greige fabric. Place the second greige fabric after caustic mercerization treatment in the washing machine, spray air currents on the second greige fabric above and below respectively, and at the same time spray the cellulase treatment liquid on the second greige fabric through nozzles on both the upper and lower sides of the second greige fabric. In this example, the liquid level of the storage tank is 1200 L, the liquid inlet volume of the washing machine is 68 L / m, the vehicle speed of the washing machine is 20 m / min, the flow rate of the air current is 300 m / min, the angle between the nozzle and the second greige fabric is 120°, the concentration of the cellulase treatment liquid is 35 g / L, the pH value of the cellulase treatment liquid is 6, the treatment time is 30 min, the temperature of the cellulase treatment liquid is 53 °C, and the cellulase treatment liquid selected is CAN enzyme of Genencor.

[0204] After spraying the second greige fabric with the cellulase treatment solution, the second greige fabric is immersed in a sodium carbonate solution to inactivate the cellulase. The pH value of the sodium carbonate solution is 9.5, the temperature of the sodium carbonate solution is 85 °C, and the inactivation time of the cellulase is 12 min. After inactivating the cellulase, the greige fabric is washed with water, and the temperature of the water washing treatment is 50 °C.

[0205] S27. Post-treatment of the second greige fabric: The second greige fabric is subjected to the first calendering treatment, pre-shrinking treatment, and the second calendering treatment.

[0206] Steps S21 to S22 are the same as steps S11 to S12, and the difference between step S23 and step S13 is that the concentration of the lye is 180 g / L; steps S24 to S25 are the same as steps S15 to S16.

[0207] In this embodiment, the preparation method of the bedsheet is as follows:

[0208] S21. Provide the third greige fabric;

[0209] S22. Pretreat the third greige fabric;

[0210] S23. Tentering and pre-setting treatment;

[0211] S24. Reverse sanding (feeding the fabric from the reverse side of the sanding machine, the forward and reverse rotation mode of the sanding roller of the sanding machine is three forward and one reverse, the fabric guiding speed is 15 m / min, the feeding tension is 0.2 Mpa, the wrap angle between the fabric and the sanding roller is 15°, and the rotation speed of the sanding roller is 90 r / min);

[0212] S25. Printing and dyeing;

[0213] S26. Softening treatment of the third greige fabric.

[0214] S27. Post-treatment of the third greige fabric.

[0215] The difference between the preparation method of the bedsheet and the preparation method of the second fabric layer is that mercerization is not carried out, and a reverse sanding process is added after the tentering and pre-setting treatment in step S23. When softening the third greige fabric in step S26, the concentration of the cellulase treatment solution is 15 g / L.

[0216] In this embodiment, the first greige fabric is made of long-staple cotton with 60s×60s, the warp and weft yarn densities are 230×115 per inch respectively, and the weave is five-harness satin; the second greige fabric is made of long-staple cotton with 60s×60s, the warp and weft yarn densities are 200×98 per inch respectively, and the weave is five-harness satin; the third greige fabric is made of long-staple cotton with 60s×60s, the warp and weft yarn density is 200×98 per inch, and the weave is five-harness satin.

[0217] In this embodiment, the performance tests of the first fabric layer, the second fabric layer and the bedsheet in the bedding set are shown in Table 5:

[0218] Table 5 Performance tests of the first fabric layer, the second fabric layer and the bedsheet in the bedding set of Example 3

[0219]

[0220] In this embodiment, the gram weight of the first fabric layer is 150 GSM, and the gram weight of the second fabric layer is 130 GSM. The flatness level of the first fabric layer after 5 washes is 3.1, and the flatness level of the bedsheet after 5 washes is 3. It can be seen that the first fabric layer and the bedsheet still maintain good flatness after multiple washes.

[0221] Comparative Example 3

[0222] In this comparative example, long-staple cotton of 120s / 2×60s is selected for the first greige cloth, the second greige cloth and the third greige cloth, and the warp and weft yarn densities are 200×98 / inch respectively, with a five-end satin weave.

[0223] The difference in the preparation method of the first fabric layer in this comparative example from that of Example 3 is that: in step S13, the concentration of the alkali solution during the alkali mercerization treatment is 180 g / L, and in step S17, the quaternary ammonium salt softener is 15 g / L, the silicone softener is 10 g / L, the buffer is 3 g / L, and the acetic acid is 0.3 g / L, and the silk protein finishing agent is not included. In this comparative example, the preparation methods of the second fabric layer and the bedsheet are the same as those of the first fabric layer in this comparative example.

[0224] In this comparative example, the performance tests of the first fabric layer, the second fabric layer and the bedsheet in the bedding set are shown in Table 6:

[0225] Table 6 Performance tests of the first fabric layer, the second fabric layer and the bedsheet in the bedding set of Comparative Example 3

[0226]

[0227] In this comparative example, the flatness level of the first fabric layer after 5 washes is 2.5, and the flatness level of the bedsheet after 5 washes is 2.6. Compared with Example 1, the flatness of the first fabric layer and the bedsheet has decreased significantly. The color of the dyeing and printing in Comparative Example 3 is the same as that in Example 3, and the same-color glossiness of Example 3 and Comparative Example 3 has increased by 18%. Moreover, the glossiness of the first fabric layer in Example 3 remains good after multiple washes, while the glossiness of the first fabric layer in Comparative Example 3 decreases severely after washing.

[0228] In this application, for the test of softness, refer to the group standard T / ZFB 0003-2019 "Test Instrument Method for Relative Handfeel Value of Textiles"; for the test of luster, refer to FZ / T 01097-2006 "Test Method for Fabric Luster"; for the anti-slip test, refer to FZ / T 01054-2012 "Test Method for Fabric Surface Friction Performance"; the test method for the flatness of the fabric is: GB / T 13769-2009 "Test Method for Evaluating the Appearance Flatness of Textiles after Washing". The moisture absorption performance is determined by GB / T 21655.1-2023 "Evaluation of Moisture Absorption and Quick Drying of Textiles - Part 1 Single-Item Combined Test Method", and the test of air permeability refers to GB / T 5453-1997 "Determination of Air Permeability of Textile Fabrics". The protein content of the first fabric layer is measured using a Kjeldahl apparatus.

[0229] In the bedding set of this application, the softness of the first fabric layer, the second fabric layer, and the bedsheet all meet the basic requirements of six-star softness in Q320691KDA56-2022 "Detection and Evaluation of Textile Soft Quality". And it can be seen from Table 1 to Table 6 that the first fabric layer in this application has good gloss and flatness, the second fabric layer has good moisture absorption and air permeability, and the bedsheet has a relatively large friction coefficient when in contact with the bedsheet on the basis of maintaining good air permeability, which can effectively prevent the bedsheet from sliding.

[0230] The first fabric layer has good luster and is not easy to wrinkle, with good visual comfort. The second fabric layer has good moisture absorption and sweat discharge performance. By setting the second fabric layer close to the body, it can timely drain away the sweat generated by the human body and transfer it to the outer layer for dissipation, keeping the skin surface dry and reducing the discomfort caused by sweat sticking to the skin, thereby improving the comfort of sleep. The bedsheet has good moisture absorption and excellent anti-wrinkle performance, and the friction coefficient on the reverse side of the bedsheet is relatively large and it is not easy to slide, which can improve the sleep comfort. The functions of the first fabric layer, the second fabric layer, and the bedsheet in the above-mentioned bedding set are different, and they have the characteristics of good luster, skin-friendly softness, moisture absorption and air permeability, easy to care, anti-wrinkle and flat, and anti-slip and non-falling, etc., which can greatly enhance the usage experience of consumers. Through the actual trial experience of 100 consumers, compared with the sets normally used by consumers, 89% of the consumers feedback that the bedsheet of the bedding set in this application is not easy to wrinkle, not easy to shift on the bed, and the sleep experience is more comfortable.

[0231] The quilt cover of the bedding set of the present invention comprises a first fabric layer and a second fabric layer sewn together, the first fabric layer has good glossiness and flatness, good glossiness and is not easy to wrinkle, and has good visual comfort. The second fabric layer has good moisture absorption and perspiration discharge. The second fabric layer is arranged close to the body to timely discharge the sweat produced by the human body, and transfer it to the outer layer for dissipation, so that the skin surface remains dry and the discomfort caused by sweat sticking to the skin is reduced, thereby improving the comfort of sleep. The bed sheet has good hygroscopicity and good wrinkle resistance, and the friction coefficient of the reverse side of the bed sheet is large, and it is not easy to slide, which can improve the comfort of sleep. The bedding set of the present application alleviates the problem that the moisture absorption and perspiration discharge of the quilt cover and the bed sheet are not taken into account at the same time, and can greatly enhance the user experience of consumers. Therefore, the present invention effectively overcomes some practical problems in the prior art and has high utilization value and use significance.

[0232] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A bedding set, characterized in that: include: A quilt cover, comprising a first fabric layer and a second fabric layer sewn together, a cavity for filling a quilt core is formed between the first fabric layer and the second fabric layer, the warp yarn of the first fabric layer is a single-strand yarn with a yarn count of 60 to 90 or a double-strand yarn with a yarn count of 80 to 200, the warp density of the first fabric layer is 120 to 230 strands / inch, and the weft density of the first fabric layer is 70 to 130 strands / inch; the gram weight ratio of the first fabric layer to the gram weight of the second fabric layer is 1.10 to 1.20; the flatness of the first fabric layer is ≥ level 3, the drip diffusion time of the second fabric layer is ≤ 6s, and the air permeability of the second fabric layer is ≥ 180 mm / s; A bed sheet, wherein the water drip diffusion speed time of the bed sheet is ≤6s, the flatness of the bed sheet is ≥level 3, and the static friction coefficient of the back surface of the bed sheet is ≥0.

75.

2. The bedding set according to claim 1, characterized in that: The first fabric layer is prepared by the following method: providing a first grey cloth; First pre-treatment: subjecting the first grey cloth to singeing treatment, enzyme desizing treatment and scouring and bleaching treatment; First alkali mercerizing treatment: firstly, the first grey cloth is immersed in alkali solution, and then the first grey cloth is stretched, expanded, rinsed, flat washed, squeezed and dried; wherein the concentration of the alkali solution is 200-230 g / L; Enzyme polishing treatment: placing the first blank in a polishing treatment liquid for polishing treatment; Slurry stretching, softening and shaping: immersing the first grey cloth in a slurry stretching solution, wherein the slurry stretching solution includes 10-15 g / L of quaternary ammonium salt softener, 10-15 g / L of silicone softener, 2-3 g / L of buffer, 20-60 g / L of silk protein finishing solution, and 0.1-0.3 g / L of acetic acid, with a vehicle speed of 40-60 m / min, a drying temperature of 110-130° C., and a drying time of 2-3 min; First post-processing: performing a first calendering process, a pre-shrinking process and a second calendering process on the first grey cloth.

3. The bedding set according to claim 2, characterized in that: The temperature of the polishing treatment is 50-55° C., and the time of the polishing treatment is 4-6 hours.

4. The bedding set according to claim 1, characterized in that: The second fabric layer is prepared by the following method: providing a second grey cloth; Second pre-treatment: performing singeing treatment, enzyme desizing treatment and scouring and bleaching treatment on the second grey cloth; Second alkali mercerizing treatment: firstly, the second grey cloth is dipped in alkali solution, and then the second grey cloth is stretched, expanded, rinsed, flat washed, squeezed and dried; First softening treatment: placing the second grey cloth in a washing machine, making the wet second grey cloth hit against a grid, and spraying a cellulase treatment solution onto the second grey cloth; Second post-treatment: performing a first calendering treatment, a pre-shrinking treatment and a second calendering treatment on the second grey cloth.

5. The bedding set according to claim 4, characterized in that: Placing the second grey cloth in a washing machine, making the wet second grey cloth hit against a grid, and spraying a cellulase treatment solution onto the grey cloth at the same time comprises the following steps: Air flow is sprayed on the second grey cloth in a wet state after being immersed in cellulase treatment liquid, respectively, above and below the second grey cloth so that the second grey cloth hits a grid, and cellulase treatment liquid is sprayed on the second grey cloth through nozzles on the upper and lower sides of the second grey cloth; wherein the speed of the washing machine is 12 to 30 m / min, the flow rate of the air flow is 100 to 500 m / min, and the angle between the nozzle and the second grey cloth is 90 to 160°.

6. The bedding set according to claim 4, characterized in that: The concentration of the cellulase treatment solution is 20-50 g / L, the pH value of the cellulase treatment solution is 5-7, the temperature of the cellulase treatment solution is 50° C.-55° C., and the treatment time is 20-40 min.

7. The bedding set according to claim 4, characterized in that: The concentration of the alkali solution in the second alkali mercerizing treatment is 170-180 g / L.

8. The bedding set according to claim 1, characterized in that: The bed sheet is prepared by the following method: Provide third grey cloth; The third pre-treatment: performing a singeing treatment, an enzyme desizing treatment and a scouring and bleaching treatment on the third grey cloth; Second softening treatment: placing the third grey cloth in a washing machine, making the wet third grey cloth hit against a grid, and spraying a cellulase treatment solution onto the third grey cloth; Third post-processing: performing a first calendering process, a pre-shrinking process and a second calendering process on the third grey cloth.

9. The bedding set according to claim 8, characterized in that: Placing the third grey cloth in a washing machine, making the wet third grey cloth hit against a grid, and spraying a cellulase treatment solution onto the third grey cloth at the same time comprises the following steps: Air flow is sprayed on the third grey cloth above and below the third grey cloth in a wet state after being immersed in cellulase treatment liquid so that the third grey cloth hits a grid, and cellulase treatment liquid is sprayed on the grey cloth through nozzles on the upper and lower sides of the third grey cloth; wherein the speed of the washing machine is 12 to 30 m / min, the flow rate of the air flow is 100 to 500 m / min, and the angle between the nozzle and the third grey cloth is 90 to 160°.

10. The bedding set according to claim 8, characterized in that: The concentration of the cellulase treatment solution is 15-50 g / L, the pH value of the cellulase treatment solution is 5-7, the temperature of the cellulase treatment solution is 50° C.-55° C., and the treatment time is 20-40 min.

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