Method for producing a temperature-regulating bed linen

Abstract

The present application relates to the field of textiles, and a preparation method of a temperature-regulating bedding fabric, comprising the following steps: Step 1, temperature-regulating yarn preparation: mixing temperature-regulating fiber A and temperature-regulating fiber B, and then mixing with cellulose fibers to obtain; Step 2, fabric weaving: the weaving structure of the fabric adopts warp face reinforced satin structure; the yarn is 100% full cotton yarn, 100% regenerated cellulose fiber yarn or cotton regenerated cellulose fiber blended yarn with fineness of 50S-80S; the weft yarn is temperature-regulating yarn; Step 3, fabric dyeing and finishing: the grey fabric woven in Step 2 is subjected to desizing process, pretreatment process, dyeing process and setting finishing process to obtain the temperature-regulating bedding fabric. The fabric obtained by the present application has soft hand feeling, skin-friendly and breathable, and the temperature-regulating function is durable and washable, and the cost is controllable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of textiles, in particular to a fabric. BACKGROUND

[0002] With the continuous improvement of people's living standards and the rapid development of science and technology, people's functional requirements for textiles are more diversified. Phase change temperature regulating textiles have developed rapidly in recent years and have been developed and used to different degrees in textile clothing and home textile products. Its working principle is to add a substance that can undergo phase change within a certain temperature range in the textile. The phase change substance absorbs heat and changes from solid to liquid when the body surface temperature is high; and releases heat and changes from liquid to solid when the body surface temperature is low, thereby continuously regulating the body surface temperature and achieving intelligent temperature regulation.

[0003] CN110344258A discloses a preparation method of a heat storage temperature regulating fabric. A phase change working solution is prepared from a phase change emulsion, an adhesive, a surfactant and a thickening agent, and is coated on the surface of the fabric by a foaming coating method. Although the preparation method of the heat storage temperature regulating fabric is simple and fast, it greatly affects the hand feeling of the fabric, making the fabric thick and hard, and not breathable, which greatly limits the application field.

[0004] CN110565373B discloses a temperature regulating textile and a production method thereof. A printing paste prepared from a phase change material, a crosslinking agent, a thickening agent and water is coated on the surface of the textile body by a printing process and dried to obtain a temperature regulating product. The temperature regulating product obtained by this scheme also has problems such as hard hand feeling and poor air permeability.

[0005] CN117604709A discloses an intelligent temperature regulating comfortable fabric and a preparation method thereof. Cotton yarn and spandex yarn are used as the surface layer, polyester filament is used as the middle layer, and phase change rayon and spandex yarn are used as the skin layer. The fabric adopts a knitting process and has a comfortable hand feeling, but the manufacturing cost is high, and the use of phase change rayon also increases the raw material cost, so the overall cost of the fabric is high. In addition, the proportion of the temperature regulating material in the fabric is small, and the presence of spandex yarn makes the setting temperature high and destroys the phase change conditioning, resulting in limited overall temperature regulating effect.

[0006] CN116024815B discloses a processing method of an intelligent temperature regulating woven fabric. The method is to perform temperature regulating finishing on a pretreated pure cotton gray fabric by dip padding a temperature regulating finishing agent. Although this scheme has a smaller impact on the hand feeling of the fabric compared with the coating method, the temperature regulating function has poor wash resistance. SUMMARY

[0007] The present application aims to provide a preparation method of a temperature regulating bedding fabric, which has both performance and hand feeling.

[0008] The technical problem solved by the present application can be implemented by the following technical scheme:

[0009] A preparation method of a temperature-regulating bedding fabric, comprising the following steps:

[0010] Step one, temperature-regulating yarn preparation: temperature-regulating fiber A with a polyurethane microcapsule wall material with an enthalpy of 15-30 J / g and temperature-regulating fiber B with a melamine resin microcapsule wall material with an enthalpy of 31-80 J / g are mixed in a ratio of 70-90:30-10, and then are blended with cellulose fibers in a ratio of 30-50:70-50 to obtain;

[0011] The temperature-regulating fibers and the cellulose fibers are separately subjected to opening, carding and combining, and pre-drawing processes; the temperature-regulating fibers are subjected to softening agent application on a drawing machine in the pre-drawing process, the spraying pressure is set to 0.2-0.3 MPa, the atomized particle size is 10-20 μm, and the coverage is ≥90%; the softening agent is amino silicone oil emulsion, and the addition amount is 0.8-1.5% of the fiber mass;

[0012] Eight temperature-regulating fiber slivers and eight cellulose fiber slivers are combined and wound, the temperature-regulating fiber sliver weight is 10.0-22.5 g / 5 m, the cellulose fiber sliver weight is 12.0-25.8 g / 5 m, and the sliver output speed is 300-320 m / min; the roving setting is 5.0-6.5 g / 10 m, the draft ratio is 6.5-7.5, the twist factor is 70-75, and the spindle speed is 790-810 r / min; two rovings are simultaneously fed in the spinning stage, the draft ratio is set to 39.5-41.0, the compact zone gauge is 2.5-3.5 mm, the compact zone adopts negative pressure airflow condensation, the negative pressure value is 320-420 Pa, the condensation zone gauge is 42-47 mm, the twist factor is 350-400, and the spindle speed is 13-13.5 kr / min;

[0013] Step two, fabric weaving: the weaving structure of the fabric adopts warp face reinforced satin structure; the front face of the fabric presents warp yarn material, the yarn is 50S-80S 100% cotton yarn, 100% regenerated cellulose fiber yarn or cotton regenerated cellulose fiber blended yarn; the back face of the fabric presents weft yarn material, the weft yarn is temperature-regulating yarn; the radial density is 460-820 roots / 10 cm, the weft density is 320-560 roots / 10 cm; the fabric width is 235-250 cm, and the total warp yarn number range is 8000-20000 roots;

[0014] Step three, fabric dyeing and finishing: the gray fabric obtained by weaving in step two is subjected to desizing process, pretreatment process, dyeing process and setting finishing process to obtain the temperature-regulating bedding fabric.

[0015] The desizing process adopts desizing enzyme 6-8 g / L, penetrant 2-3 g / L, enzyme immersion temperature 30-45 DEG C, pH value 6-7, track box stacking 1-1.5 h, then 60-70 DEG C water washing once, and normal temperature water washing twice.

[0016] The pre-treatment process adopts sodium hydroxide 6-8 g / L, hydrogen peroxide 4-6 g / L, refining agent 5-6 g / L, chelating dispersant 2-3 g / L, stacking temperature 35-40 DEG C, time 20-24 h, then 60-70 DEG C water washing once, and normal temperature water washing to neutral.

[0017] The dyeing process mixes reactive dye 1-8 % o.w.f, fixing agent liquid 20-30 g / L and dyeing agent 1-2 g / L, then the fabric is rolled, rolled and stacked, the stacking temperature is 30-35 DEG C, the time is 8-10 h, then soaping is carried out, the soaping agent is 2-3 g / L, the soaping temperature is 85-90 DEG C, the soaping time is 8-12 min, then normal temperature water washing is carried out twice, low temperature drying is carried out, the hot air temperature of low temperature drying is 80-85 DEG C, and the drying time is 10-15 min.

[0018] The setting finishing process includes a tenter soft finishing process and a preshrinking process, the tenter soft finishing process is carried out on a loose tenter setting machine, the softening agent is 5-10 g / L, the oven temperature is 120-130 DEG C, the time is 20-30 s, and the overfeed is 25-30 %;The preshrinking process is that the blanket temperature is 110-120 DEG C, the shrinkage rate is 6-8 %, the pressure is 0.3-0.5 MPa, and the speed is 30-40 m / min.

[0019] The fineness of the temperature-regulating yarn is 30S-100S.

[0020] The cellulose fiber includes one or more of cotton fiber, viscose fiber, lyocell fiber and modal fiber.

[0021] Beneficial effects: the temperature-regulating yarn prepared by the application can keep a high enthalpy value and has a small damage to the phase change material in the case of considering the basic performance and good hand feeling by utilizing the complementary advantages of different microcapsule wall materials. The final fabric obtained by combining the temperature-regulating yarn, weaving control and dyeing and finishing control is soft in hand feeling, skin-friendly and breathable, has a durable temperature-regulating function and is washable, and the cost is controllable. The processing technology of the application adopts the principle of low temperature, low alkali and less friction, avoids the damage and destruction to the phase change material, and makes the final product fabric have a high and durable temperature-regulating enthalpy value. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects realized by the application easy to understand, the application is further described below.

[0023] Example 1, temperature regulating fiber A of polyurethane microcapsule wall material with enthalpy of 18 J / g and temperature regulating fiber B of melamine resin microcapsule wall material with enthalpy of 60 J / g are mixed in the ratio of 80:20, and then are blended with cotton fibers in the ratio of 40:60 to prepare 40S temperature regulating fiber yarn. The temperature regulating fibers and the cotton fibers are separately subjected to opening, carding, and pre-drawing processes. In the pre-drawing process, a softener is applied to the temperature regulating fibers on a drawing machine by means of a spraying device, the spraying pressure is 0.24 MPa, the atomized particle size is 15 μm, and the coverage is ≥ 90%; the softener is amino silicone oil emulsion, and the addition amount is 1.1% based on the mass of the fibers. Eight temperature regulating fiber slivers and eight cellulose fiber slivers are combined and wound, the temperature regulating fiber sliver weight is 20.5 g / 5 m, the cellulose fiber sliver weight is 24.8 g / 5 m, and the sliver output speed is slightly reduced to 315 m / min. The roving setting is 6.2 g / 10 m, the draft ratio is 6.8, the twist factor is reduced to 71, and the spindle speed is reduced to 805 r / min. In the spinning stage, two rovings are simultaneously fed, the draft ratio is set to 39.8, the compact zone spacing is slightly lengthened to 3.2 mm, the compact zone adopts negative pressure air flow condensation, the negative pressure value is 415 Pa, the condensation zone is 45 mm, the twist factor is 355, and the spindle speed is reduced to 13.5 kr / min.

[0024] The warp yarns are 60S 60 lyocell / cotton blended yarns, and the weft yarns are the 40S temperature regulating yarns prepared above, and a five-end three-fly warp-faced reinforced satin is knitted, the warp density is 580 ends / 10 cm, the weft density is 360 ends / 10 cm, and the total warp yarn count is 18000.

[0025] The obtained fabric is subjected to normal temperature enzyme desizing, the desizing enzyme is 7.8 g / L, the penetrating agent is 2.8 g / L, the enzyme immersion temperature is 45℃, the pH value is about 6.8, the track box is stacked for 1.4 h, then washed once at 70℃, and washed twice at normal temperature.

[0026] Then, a cold pad-batch mild alkali pretreatment process is performed, the sodium hydroxide is 8 g / L, the hydrogen peroxide is 6 g / L, the refining agent is 6 g / L, and the chelating dispersant is 3 g / L, the stacking temperature is 40℃, and the time is 24 h. Then, washed once at 70℃, and washed to neutral at normal temperature.

[0027] After the pretreated fabric is dyed and finished, the finished fabric is obtained.

[0028] The dyeing process is cold pad-batch dyeing, the active dye amount is 5% o.w.f, the dye liquid is mixed with the fixing agent liquid (28 g / L) and the levelling agent 1.8 g / L, then the fabric is subjected to padding, winding and stacking, the stacking temperature is 35℃, the time is 10 h, then soaping (soaping agent 3 g / L, 90℃, 12 min), washing twice at normal temperature, and low temperature drying (hot air temperature 85℃, time 12 min).

[0029] The setting finishing process includes softening and pre-shrinking. The softening is carried out on a loose-tenter setting machine, a softener 8 g / L, an oven temperature 130℃, a time 30S, and an overfeed 26%. The pre-shrinking process is as follows: a blanket temperature 120℃, a shrinkage 6%, a pressure 0.5 MPa, and a speed 35 m / min.

[0030] The obtained temperature-regulating bed fabric has a width 250 cm and a Martindale pilling performance 4 (GB / T 4802.2 2000r), and good basic performance. The softness of the fabric measured by a Fabo instrument (AATCC TM 202) is 78.55, which is better than that of a bed fabric made of a fiber blended by 65% cotton and 35% regenerated cellulose fiber in mass percentage, which is 75.66. The market price of the temperature-regulating fiber A is about 40 yuan / kg, and the market price of the temperature-regulating fiber B is about 200 yuan / kg. The price of the mixed fiber obtained by mixing the two is (80*40+20*200) / 100=43.2 yuan / kg. The market price of cotton is about 17 yuan / kg. Therefore, the cost of the blended fiber of Example 1 is (40*43.2+60*17) / 100=27.48 yuan / kg. The enthalpy value of the fabric made of the blended fiber of Example 1 measured according to GB / T 43820-2024 is 4.2 J / g, which is 20-30% higher than that of a temperature-regulating fabric made of a blended fiber with the same price (the temperature-regulating fiber B and cotton fiber are blended in mass percentage 5.7:94.3, and the cost of the blended fiber after blending is (200*5.7+17*94.3) / 100=27.43 yuan / kg), and the phase change enthalpy retention rate after 10 times of washing is 98.5%.

[0031] Example 2, temperature regulating fiber A with polyurethane microcapsule wall material with enthalpy of 25 J / g and temperature regulating fiber B with melamine resin microcapsule wall material with enthalpy of 80 J / g are mixed in a ratio of 90:10, and then blended with ordinary lyocell fiber in a ratio of 30:70 to prepare 50S temperature regulating fiber yarn. The temperature regulating fiber and cotton fiber are separately subjected to opening, carding, and pre-drawing processes. In the pre-drawing process, a softener is applied to the temperature regulating fiber on the drawing machine, the spraying pressure is 0.22 MPa, the atomized particle size is 12 μm, and the coverage is ≥90%; the softener is amino silicone oil emulsion, and the addition amount is 0.9% of the fiber mass. Eight temperature regulating fiber slivers and eight cellulose fiber slivers are combined and wound, the temperature regulating fiber sliver weight is 19.5 g / 5 m, the cellulose fiber sliver weight is 23.5 g / 5 m, and the sliver output speed is slightly reduced to 305 m / min. The roving setting is 5.5 g / 10 m, the draft ratio is 7.2, the twist factor is reduced to 73, and the spindle speed is reduced to 798 r / min. In the spinning stage, two rovings are fed simultaneously, the draft ratio is set to 40.5, the compact zone spacing is slightly lengthened to 2.8 mm, the compact zone uses negative pressure air flow condensation, the negative pressure value is 380 Pa, the condensation zone is 42 mm, the twist factor is 365, and the spindle speed is reduced to 13.2 kr / min.

[0032] The warp yarn is 50S 100% combed cotton yarn, and the weft yarn is the 50S temperature regulating yarn prepared above, and an eight-end five-fly warp-faced reinforced satin is knitted, the warp density is 550 ends / 10 cm, the weft density is 420 ends / 10 cm, and the total warp yarn count is 15000.

[0033] The obtained gray fabric is subjected to normal temperature enzyme desizing, desizing enzyme 6.5 g / L, penetrating agent 2.4 g / L, enzyme immersion temperature 38℃, pH value 7.0, and belt box stacking for 1.2 h, then 65℃ water washing once, and normal temperature water washing twice.

[0034] Then a cold pad-batch light alkali pretreatment process is carried out, sodium hydroxide 7.5 g / L, hydrogen peroxide 5.8 g / L, refining agent 5.5 g / L, chelating dispersant 2.5 g / L, stacking temperature 38℃, and time 22 h. Then 65℃ water washing once, and normal temperature water washing to neutral.

[0035] After the pretreated fabric is dyed and finished, the finished fabric is obtained.

[0036] The dyeing process is cold pad-batch dyeing, the amount of reactive dye is 3% o.w.f, the dye liquid is mixed with fixing agent liquid (25 g / L) and leveling agent 1.5 g / L, then the fabric is padded, wound and stacked, the stacking temperature is 32℃, and the time is 9 h, then soaping (soaping agent 2.5 g / L, 88℃, 10 min), normal temperature water washing twice, and low temperature drying (hot air temperature 82℃, time 10 min).

[0037] The setting finishing process includes softening and pre-shrinking. The softening is carried out on a loose-tenter setting machine, a softener 7 g / L, a drying room temperature 120℃, a time 25S, and an overfeed 28%. The pre-shrinking process is a blanket temperature 110℃, a shrinkage 7%, a pressure 0.4 MPa, and a speed 40 m / min.

[0038] The obtained temperature-regulating bedding fabric has a width 245 cm and a Martindale pilling performance 3-4 (GB / T 4802.2 2000r), and good basic performance. The softness of the fabric measured by a fabricometer (AATCC TM 202) is 77.86, which is better than that of the bedding fabric of the same specification (the same specification refers to the same yarn fineness, fabric density, and fabric width) and the same material (temperature-regulating fiber A, temperature-regulating fiber B, and ordinary lyocell fiber blended) but different blending methods (not temperature-regulating fiber A and temperature-regulating fiber B blended first, and then blended with ordinary lyocell fiber, but temperature-regulating fiber A, temperature-regulating fiber B, and ordinary lyocell fiber directly blended together). The market price of temperature-regulating fiber A is about 40 yuan / kg, and the market price of temperature-regulating fiber B is about 200 yuan / kg. The price of the blended fiber obtained after blending the two is (90*40+10*200) / 100=56 yuan / kg. The market price of lyocell fiber is about 20 yuan / kg. Therefore, the cost of the blended fiber of Example 2 is (30*56+70*20) / 100=30.8 yuan / kg. The enthalpy value of the fabric made of the blended fiber of Example 2 measured according to GB / T 43820-2024 is 4.5 J / g, which is 30-35% higher than that of the temperature-regulating fabric made of the blended fiber of the same price (temperature-regulating fiber B and lyocell fiber blended at a mass percentage of 6:94, and the cost of the blended fiber after blending is (200*6+20*94) / 100=30.8 yuan / kg), and the phase change enthalpy retention rate is 97.8% after 10 times of washing.

[0039] In the above two examples, the fabric has a warp-weft reinforced sateen structure. The warp-weft reinforced sateen structure includes five three-fly warp-weft reinforced sateen, eight five-fly warp-weft reinforced sateen, ten seven-fly warp-weft reinforced sateen, etc. The fabric woven by the above has a smooth front surface, good luster, and mainly presents the material of the warp yarn; the back surface of the fabric presents a small pattern such as twill or cross, and mainly presents the material of the weft yarn.

[0040] In the above two examples, the fabric dyeing and finishing body adopts the principle of low temperature and low alkali to protect the phase change material as much as possible. The cellulose fiber includes one or more of cotton fiber, viscose fiber, lyocell fiber, and modal fiber. The prepared temperature-regulating yarn has a fineness of 30S-100S.

[0041] The temperature-regulating fiber A of the polyurethane microcapsule wall material with an enthalpy of 15-30 J / g and the temperature-regulating fiber B of the melamine resin microcapsule wall material with an enthalpy of 31-80 J / g can be directly purchased from the market. The temperature-regulating fiber A in the above two embodiments is preferably purchased from Hangzhou Shangxuan Technology Co., Ltd. (model 0915-03), and the temperature-regulating fiber B is preferably purchased from Shanghai Xiyaxin Material Technology Co., Ltd. (model 25W900578). The innovation point of the present application is not to develop a new temperature-regulating microcapsule, but to select the temperature-regulating fiber, especially the wall material and the enthalpy of the microcapsule in the temperature-regulating fiber. The core material of the microcapsule used in the temperature-regulating fiber A is preferably palm oil extract, and the core material of the microcapsule used in the temperature-regulating fiber B is preferably n-octadecane.

[0042] The basic principles and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a temperature-regulating bedding fabric, characterized in that, Includes the following steps: Step 1: Preparation of temperature-regulating yarn: Temperature-regulating fiber A of polyurethane microcapsule wall material with an enthalpy of 15-30 J / g and temperature-regulating fiber B of melamine resin microcapsule wall material with an enthalpy of 31-80 J / g are mixed in a ratio of 70-90:30-10, and then blended with cellulose fiber in a ratio of 30-50:70-50 to obtain the yarn. Temperature-regulating fibers and cellulose fibers are processed separately through opening, combing, and pre-drawing processes. In the pre-drawing process, a softener is applied to the temperature-regulating fibers using a spray device mounted on the drawing frame. The spray pressure is set to 0.2-0.3 MPa, the atomized particle size is 10-20 μm, and the coverage is ≥90%. The softener is an amino silicone oil emulsion, added at a rate of 0.8-1.5% of the fiber mass. Eight temperature-regulating fiber slivers and eight cellulose fiber slivers are wound together. The temperature-regulating fiber sliver weighs 10.0-22.5 g / 5m, and the cellulose fiber sliver weighs 12.0-25.8 g / 5m. The output speed is 300-320 m / min. The roving weight is set at 5.0-6.5 g / 10m, the draft ratio is 6.5-7.5, the twist coefficient is 70-75, and the spindle speed is 790-810 r / min. In the spinning stage, two rovings are fed in simultaneously. The draft ratio is set at 39.5-41.0, the compact zone spacing is 2.5-3.5 mm, and the compact zone uses negative pressure airflow for condensation. The negative pressure value is 320-420 Pa, the condensation zone spacing is 42-47 mm, the twist coefficient is 350-400, and the spindle speed is 13-13.5 kr / min. Step 2, Fabric Weaving: The fabric weaving structure adopts a warp-faced reinforced satin weave; the right side of the fabric presents warp yarns, which are 100% cotton yarn, 100% regenerated cellulose fiber yarn, or cotton-regenerated cellulose fiber blended yarn of 50S-80S; the reverse side of the fabric presents weft yarns, which are temperature-regulating yarns; the warp density is 460-820 ends / 10cm, and the weft density is 320-560 ends / 10cm; the fabric width is 235-250cm, and the total number of warp yarns ranges from 8000-20000 ends; Step 3, Fabric dyeing and finishing: The greige fabric woven in Step 2 is subjected to desizing, pretreatment, dyeing and finishing processes to obtain temperature-regulating bedding fabric.

2. The method for preparing a temperature-regulating bedding fabric according to claim 1, characterized in that, The desizing process uses 6-8 g / L of desizing enzyme, 2-3 g / L of penetrant, an enzyme soaking temperature of 30-45℃, a pH value of 6-7, and the track box is stacked for 1-1.5 hours. Then, it is washed once with water at 60-70℃, and then washed twice with water at room temperature.

3. The method for preparing a temperature-regulating bedding fabric according to claim 1, characterized in that, The pretreatment process uses 6-8 g / L sodium hydroxide, 4-6 g / L hydrogen peroxide, 5-6 g / L refining agent, and 2-3 g / L chelating dispersant. The stacking temperature is 35-40℃, and the time is 20-24 hours. Then, it is washed once with water at 60-70℃, and then washed with water at room temperature until neutral.

4. The method for preparing a temperature-regulating bedding fabric according to claim 1, characterized in that, The dyeing process involves mixing 1-8% owf of reactive dye, 20-30 g / L of liquid fixing agent, and 1-2 g / L of leveling agent. The fabric is then rolled, rolled, and stacked at a temperature of 30-35°C for 8-10 hours. After that, the fabric is soaped at a temperature of 85-90°C for 8-12 minutes, using 2-3 g / L of soaping agent. It is then washed twice with room temperature water and dried at a low temperature. The hot air temperature during the low-temperature drying is 80-85°C, and the drying time is 10-15 minutes.

5. The method for preparing a temperature-regulating bedding fabric according to claim 1, characterized in that, The finishing process includes a stretching and softening process and a pre-shrinking process. The stretching and softening process is carried out on a loose stretching and setting machine, with a softener of 5-10 g / L, a drying oven temperature of 120-130℃, a time of 20-30 seconds, and an overfeed of 25-30%. The pre-shrinking process involves a felt temperature of 110-120℃, a shrinkage rate of 6-8%, a pressure of 0.3-0.5 MPa, and a machine speed of 30-40 m / min.

6. The method for preparing a temperature-regulating bedding fabric according to claim 1, characterized in that, The fineness of the temperature-regulating yarn is 30S-100S.

7. The method for preparing a temperature-regulating bedding fabric according to claim 1, characterized in that, Cellulose fibers include one or more of the following: cotton fiber, viscose fiber, lyocell fiber, and modal fiber.