Flocculus and preparation method thereof

Abstract

The invention discloses a flocculus and a preparation method thereof. The flocculus provided by the embodiment of the invention comprises a moisture-conducting antibacterial layer and a phase-change temperature-regulating layer. The moisture-conducting antibacterial layer comprises first moisture-conducting low-melting-point short fibers and antibacterial and antiviral modified cotton fibers, and the mass ratio of the first moisture-conducting low-melting-point short fibers to the antibacterial and antiviral modified cotton fibers is (15%-30%): (70%-85%); the phase-change temperature-adjusting layer and the moisture-conducting antibacterial layer are stacked, and the phase-change temperature-adjusting layer is used for adjusting the temperature of the flocculus. The mass ratio of first moisture-conducting low-melting-point short fibers to antibacterial and antiviral modified cotton fibers in the moisture-conducting antibacterial layer is (15%-30%): (70%-85%), so that the moisture-conducting antibacterial layer has good moisture-conducting and antibacterial properties, specifically, the inhibition rate on staphylococcus aureus is greater than or equal to 88.3%, and the inhibition rate on candida albicans is greater than or equal to 89.1%; in addition, the phase-change temperature-adjusting layer enables the flocculus to have an intelligent bidirectional temperature-adjusting function in a short time, that is, in a cold environment, the temperature of the flocculus can be increased, and in a hot environment, the temperature of the flocculus can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, and in particular to a flake and a preparation method thereof. Background Art

[0002] Wadding is a common non-woven textile material with a fluffy structure and a soft texture. Its structure often has a good thermal insulation effect and is the main auxiliary material for home textile products to achieve the warmth function. With the development of the fiber industry, new wadding filling materials such as polyester, nylon, acrylic, polypropylene, polylactic acid fiber, cellulose fiber, etc., mainly chemical fibers, have gradually replaced down, cotton, and wool. The new wadding filling materials have a better thermal insulation effect, thanks to the gaps or interlayers formed after fiber weaving or knitting, which isolate the air flow inside and outside, thereby achieving the purpose of heat preservation.

[0003] At present, new wadding filling materials are widely used in various thermal insulation textiles such as cold-proof clothing, shoes and gloves, sleeping bags, and home textile products. With the improvement of human social living standards, in addition to considering its thermal insulation performance, the application of wadding also needs to consider its moisture conduction and antibacterial properties. Summary of the invention

[0004] The invention provides a flake and a preparation method thereof.

[0005] The flakes of the embodiment of the present invention include:

[0006] The moisture-conducting antibacterial layer comprises a first moisture-conducting low-melting-point short fiber and an antibacterial and antiviral modified cotton fiber, wherein the mass ratio of the first moisture-conducting low-melting-point short fiber to the antibacterial and antiviral modified cotton fiber is in the range of 15% to 30%: 70% to 85%;

[0007] A phase change temperature regulating layer is stacked with the moisture conductive antibacterial layer, and the phase change temperature regulating layer is used to regulate the temperature of the flakes.

[0008] In the flakes of the embodiment of the present invention, the mass ratio of the first moisture-conductive low-melting-point short fiber and the antibacterial and antiviral modified cotton fiber in the moisture-conductive antibacterial layer is in the range of 15% to 30%: 70% to 85%, so that the moisture-conductive antibacterial layer has good moisture-conductive and antibacterial properties, which are specifically manifested as an inhibition rate of ≥88.3% against Staphylococcus aureus and an inhibition rate of ≥89.1% against Candida albicans; in addition, the phase change temperature regulation layer can enable the flakes to have an intelligent two-way temperature regulation function in a short time, that is, in a cold environment, the temperature of the flakes can rise, and in a hot environment, the temperature of the flakes can decrease.

[0009] In some embodiments, the weight range of the moisture-conducting antibacterial layer is 60 g / m 2 ~100g / m 2 .

[0010] In certain embodiments, the fiber line density in the moisture-conducting antibacterial layer ranges from 1.2D to 1.5D.

[0011] In some embodiments, the phase change temperature regulating layer includes second moisture conductive low melting point short fibers and phase change temperature regulating fibers, and the mass ratio of the second moisture conductive low melting point short fibers to the phase change temperature regulating fibers is in the range of 20% to 32%: 68% to 80%.

[0012] In certain embodiments, the fiber line density in the phase change temperature regulating layer ranges from 1.2D to 1.5D.

[0013] In some embodiments, the weight range of the phase change temperature regulating layer is 80 g / m 2 ~150g / m 2 .

[0014] In certain embodiments, the flakes further include:

[0015] A heat insulation layer, wherein the heat insulation layer is spaced apart from the phase change temperature regulating layer, and the heat insulation layer comprises a foam material layer and a hydrophobic layer, wherein the foam material layer and the hydrophobic layer are stacked;

[0016] A connecting layer is arranged between the phase change temperature regulating layer and the thermal insulation layer, the connecting layer connects the phase change temperature regulating layer and the thermal insulation layer, and the connecting layer, the phase change temperature regulating layer and the thermal insulation layer form a cavity together.

[0017] In certain embodiments, the quantitative volume range of the foam material layer is 20 kg / m 3 ~30kg / m 3 .

[0018] In certain embodiments, the foam material layer has a thickness ranging from 2 mm to 6 mm.

[0019] In certain embodiments, the hydrophobic layer has a grammage range of 35 g / m 2 ~70g / m 2 .

[0020] In certain embodiments, the hydrophobic layer is provided with openings.

[0021] In some embodiments, the density of the openings is in the range of 2 / cm 2 ~6 pieces / cm 2 .

[0022] In some embodiments, the connecting layer includes Velcro, which is arranged between the phase change temperature regulating layer and the thermal insulation layer, and the Velcro connects the phase change temperature regulating layer and the thermal insulation layer. There are multiple Velcros, and the multiple Velcros are arranged at intervals. Two adjacent Velcros form a cavity together with the phase change temperature regulating layer and the thermal insulation layer.

[0023] In certain embodiments, the width of the Velcro tape ranges from 3 mm to 6 mm.

[0024] In some embodiments, the distance between two adjacent Velcro strips ranges from 15 mm to 25 mm.

[0025] The method for preparing the flakes according to the embodiment of the present invention comprises:

[0026] Providing a moisture-conducting antibacterial layer, the moisture-conducting antibacterial layer comprising a first moisture-conducting low-melting-point short fiber and an antibacterial and antiviral modified cotton fiber, wherein the mass ratio of the first moisture-conducting low-melting-point short fiber to the antibacterial and antiviral modified cotton fiber is 15% to 30%: 70% to 85%;

[0027] A phase-change temperature-regulating layer is stacked on the moisture-conducting and antibacterial layer, and the phase-change temperature-regulating layer is used to regulate the temperature of the flakes.

[0028] In certain embodiments, the moisture-conducting antibacterial layer is prepared by the following steps:

[0029] The first moisture-conducting low-melting-point short fibers and the antibacterial and antiviral modified cotton fibers are subjected to fiber opening, uniform cotton blending, cotton laying and combing in a mass ratio of 15% to 30%:70% to 85%, and a first intermediate layer is obtained;

[0030] The first intermediate layer is treated with a nonwoven fabric spunlace process to obtain the moisture-conducting and antibacterial layer.

[0031] In certain embodiments, the phase change temperature adjustment layer is prepared by the following steps:

[0032] Providing a phase change temperature regulating layer, the phase change temperature regulating layer comprising a second moisture conductive low melting point short fiber and a phase change temperature regulating fiber, the second moisture conductive low melting point short fiber and the phase change temperature regulating fiber are subjected to fiber opening, uniform cotton mixing, cotton laying and combing treatment in a mass ratio of 20% to 32%: 68% to 80% to obtain a second intermediate layer;

[0033] The second intermediate layer is subjected to a needle punching process to obtain the phase change temperature regulating layer.

[0034] In certain embodiments, the preparation method further comprises:

[0035] Providing a heat insulation layer, wherein the heat insulation layer is spaced apart from the phase change temperature regulating layer, the heat insulation layer comprises a foam material layer and a hydrophobic layer, and the foam material layer and the hydrophobic layer are stacked;

[0036] A connection layer is arranged between the phase change temperature regulating layer and the heat insulation layer, the connection layer connects the phase change temperature regulating layer and the heat insulation layer, and the connection layer, the phase change temperature regulating layer and the heat insulation layer form a cavity together.

[0037] In certain embodiments, the thermal insulation layer is prepared by the following steps:

[0038] The heat insulating layer is obtained by laminating one side surface of the foam material with the hydrophobic aerogel cloth, wherein the foam material forms a foam material layer and the hydrophobic aerogel cloth forms the hydrophobic layer.

[0039] In certain embodiments, the connecting layer is prepared by the following steps:

[0040] Provide Velcro, and set the Velcro between the phase change temperature regulating layer and the thermal insulation layer. The Velcro connects the phase change temperature regulating layer and the thermal insulation layer. There are multiple Velcros, and the multiple Velcros are arranged at intervals. Two adjacent Velcros, the phase change temperature regulating layer and the thermal insulation layer form a cavity together, so as to obtain the connecting layer.

[0041] In certain embodiments, the preparation method further comprises:

[0042] Combining the moisture-conducting and antibacterial layer with the phase-change temperature-regulating layer to obtain a first composite layer;

[0043] The first composite layer and the heat insulation layer are combined through the connecting layer to obtain a second composite layer.

[0044] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0046] Figure 1 Schematic diagram of the structure of the flakes according to the embodiment of the present invention;

[0047] Figure 2 is another structural schematic diagram of a flake according to an embodiment of the present invention;

[0048] Figure 3It is a schematic flow chart of a method for preparing flakes according to an embodiment of the present invention;

[0049] Figure 4 It is a schematic flow chart of a method for preparing flakes according to an embodiment of the present invention;

[0050] Figure 5 It is a schematic flow chart of a method for preparing flakes according to an embodiment of the present invention;

[0051] Figure 6 It is a schematic flow chart of a method for preparing flakes according to an embodiment of the present invention;

[0052] Figure 7 It is a schematic flow chart of a method for preparing flakes according to an embodiment of the present invention;

[0053] Figure 8 It is a schematic flow chart of a method for preparing flakes according to an embodiment of the present invention;

[0054] Fig. 9 It is a schematic flow chart of a method for preparing flakes according to an embodiment of the present invention.

[0055] Description of main component symbols:

[0056] Flakes 100; moisture-conducting and antibacterial layer 10; phase-change temperature-regulating layer 20; heat-insulating layer 30; foam material layer 31; hydrophobic layer 32; connecting layer 40; cavity 50; opening 320; Velcro 41. DETAILED DESCRIPTION

[0057] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0059] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0061] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0062] See also Figure 1 The flakes 100 of the embodiment of the present invention include a moisture-conducting antibacterial layer 10 and a phase-change temperature-regulating layer 20. The moisture-conducting antibacterial layer 10 includes a first moisture-conducting low-melting-point short fiber and antibacterial and antiviral modified cotton fiber, and the mass ratio of the first moisture-conducting low-melting-point short fiber to the antibacterial and antiviral modified cotton fiber is in the range of 15% to 30%: 70% to 85%; the phase-change temperature-regulating layer 20 is stacked with the moisture-conducting antibacterial layer 10, and the phase-change temperature-regulating layer 20 is used to adjust the temperature of the flakes 100.

[0063] In the flakes 100 of the embodiment of the present invention, the mass ratio of the first moisture-conductive low-melting-point short fibers and the antibacterial and antiviral modified cotton fibers in the moisture-conductive antibacterial layer 10 is in the range of 15% to 30%: 70% to 85%, so that the moisture-conductive antibacterial layer 10 has good moisture-conductive and antibacterial properties, which are specifically manifested as an inhibition rate of ≥88.3% against Staphylococcus aureus and an inhibition rate of ≥89.1% against Candida albicans; in addition, the phase change temperature regulating layer 20 can enable the flakes 100 to have an intelligent two-way temperature regulating function in a short time, that is, in a cold environment, the temperature of the flakes 100 can rise, and in a hot environment, the temperature of the flakes 100 can decrease.

[0064] Specifically, the moisture-conducting antibacterial layer 10 can be a fiber mesh layer that provides antibacterial and moisture-conducting functions in the flakes 100. The first moisture-conducting low-melting-point short fibers can include at least one of polylactic acid short fibers, polypropylene short fibers, and various special-shaped polyester short fibers (cross-shaped, triangular, etc.). These materials have good moisture conductivity, which can increase the air permeability and comfort of the flakes 100, and can also improve the hygroscopicity and quick-drying properties of the flakes 100. In addition, these materials have high strength, which can reduce the adverse effects of external pressure during use and reduce the probability of the structure of the flakes 100 being damaged.

[0065] Antibacterial and antiviral modified cotton fibers may include Antiviral cotton, Chitosan antibacterial cotton, Instant deodorizing fibers and At least one of the zinc shield fibers, these materials can effectively inhibit the growth of bacteria and viruses in the flakes 100, thereby improving the antibacterial and antiviral properties of the flakes 100.

[0066] The mass ratio of the first moisture-conducting low-melting-point short fibers to the antibacterial and antiviral modified cotton fibers is in the range of 15% to 30%: 70% to 85%. Within this range, the performance of the flocculus 100 can be optimally balanced, which can ensure the air permeability and comfort of the flocculus 100 and improve the antibacterial and antiviral performance of the flocculus 100.

[0067] Among them, the mass proportion of the first moisture-conducting low-melting point staple fibers can range from 15% to 20%, 16% to 25%, 16% to 22%, 20% to 30%, etc., and the mass proportion of the first moisture-conducting low-melting point staple fibers can range from 15%, 17%, 22%, 26%, 30%, etc.; the mass proportion of the antibacterial and antiviral modified cotton fibers can range from 70% to 80%, 70% to 75%, 81% to 85%, 81% to 83%, etc., and the mass proportion of the antibacterial and antiviral modified cotton fibers can range from 70%, 72%, 80%, 83%, 85%, etc.

[0068] The phase change temperature regulating layer 20 can be a fiber mesh layer that provides a phase change temperature regulating function in the flakes 100. The specific principle of phase change temperature regulating is that when the phase change material is heated by an external heat source, its temperature will gradually increase until it reaches the phase change temperature. Within the phase change temperature range, the phase change material will absorb external heat and convert it into phase change enthalpy, so that its temperature remains unchanged. This process is called melting phase change. When the phase change material is cooled by the outside world, its temperature will gradually decrease until it reaches the phase change temperature. Within the phase change temperature range, the phase change material will release phase change enthalpy, so that its temperature remains unchanged. This process is called crystallization phase change. Therefore, the phase change material can absorb or release the temperature changes of the outside world, thereby maintaining the stability of the temperature of the flakes 100 and achieving the effect of heat preservation.

[0069] In textiles, the part close to the air is called the outside, and the part close to the wearer is called the inside. In the direction from the outside to the inside, the phase change temperature regulating layer 20 can be stacked with the moisture conductive antibacterial layer 10, and further, the phase change temperature regulating layer 20 can be attached to the side of the moisture conductive antibacterial layer 10 facing the outside.

[0070] In some embodiments, the weight of the moisture-conducting antibacterial layer 10 is in the range of 60 g / m 2 ~100g / m 2 Within this range, the warmth retention and air permeability of the wadding 100 are good. When the gram weight is greater than 100g / m 2 When the weight is less than 60 g / m 2When the wadding 100 is thin, has poor air permeability, is not wear-resistant, and does not have sufficient warmth retention performance.

[0071] The weight range of the moisture-conducting antibacterial layer 10 can be 60 g / m 2 ~90g / m 2 , 60g / m 2 ~85g / m 2 , 70g / m 2 ~80g / m 2 , 90g / m 2 ~100g / m 2 , 95g / m 2 ~100g / m 2 The weight of the moisture-conducting antibacterial layer 10 can be 60 g / m 2 , 70g / m 2 , 80g / m 2 , 90g / m 2 , 100g / m 2 wait.

[0072] In some embodiments, the fiber line density in the moisture-conducting antibacterial layer 10 is in the range of 1.2D to 1.5D. Within this range, the warmth retention of the flakes 100 is good. When the fiber line density in the moisture-conducting antibacterial layer 10 is less than 1.2D, the flakes 100 are not easy to recover to their original fluffiness after being subjected to external pressure, resulting in decreased warmth retention; when the fiber line density in the moisture-conducting antibacterial layer 10 is greater than 1.5D, the fibers are too close together, the air permeability is poor, and the wearing is uncomfortable.

[0073] Among them, the fiber line density range of the moisture-conducting antibacterial layer 10 can be 1.2D~1.4D, 1.2D~1.3D, 1.3D~1.5D, 1.4D~1.5D, 1.2D~1.5D, etc., and the fiber line density of the moisture-conducting antibacterial layer 10 can be 1.2D, 1.3D, 1.35D, 1.4D, 1.5D, etc.

[0074] In some embodiments, the phase change temperature regulating layer 20 includes the second moisture conductive low melting point short fiber and the phase change temperature regulating fiber, and the mass ratio of the second moisture conductive low melting point short fiber to the phase change temperature regulating fiber is in the range of 20% to 32%: 68% to 80%. Within this range, the performance of the flakes 100 is optimally balanced, which can ensure the air permeability and comfort of the flakes 100 and improve the temperature regulating performance of the flakes 100.

[0075] Among them, the mass proportion of the second moisture-conductive low-melting point short fibers can range from 21% to 32%, 25% to 32%, 26% to 31%, 27% to 32%, 20% to 25%, etc., and the mass proportion of the second moisture-conductive low-melting point short fibers can range from 21% to 32%, 25% to 32%, 26% to 31%, 27% to 32%, 20% to 25%, etc.

[0076] Specifically, the second moisture-conducting low-melting-point staple fiber may include at least one of polylactic acid staple fiber, polypropylene staple fiber, and various special-shaped polyester staple fibers (cross-shaped, triangular, etc.). The second moisture-conducting low-melting-point staple fiber and the first moisture-conducting low-melting-point staple fiber may have the same or different compositions. The phase-change temperature-regulating fiber includes at least one of phase-change temperature-regulating polyester fiber, phase-change temperature-regulating acrylic staple fiber, or phase-change temperature-regulating cellulose fiber. The phase-change temperature-regulating fiber may be prepared by adding a phase-change energy storage material during the spinning process, thereby making the phase-change temperature-regulating performance lasting. Optionally, the phase-change temperature-regulating fiber may be Constant temperature fiber.

[0077] In some embodiments, the fiber line density in the phase change thermoregulating layer 20 is in the range of 1.2D to 1.5D. Within this range, the warmth retention of the flakes 100 is better. When the fiber line density in the phase change thermoregulating layer 20 is less than 1.2D, the flakes 100 are not easy to recover to their original fluffiness after being subjected to external pressure, resulting in decreased warmth retention; when the fiber line density in the phase change thermoregulating layer 20 is greater than 1.5D, the fibers are too close together, the air permeability is poor, and the wearing is uncomfortable.

[0078] Among them, the fiber line density range in the phase change temperature adjustment layer 20 can be 1.2D~1.4D, 1.2D~1.3D, 1.3D~1.5D, 1.4D~1.5D, 1.2D~1.5D, etc., and the fiber line density in the phase change temperature adjustment layer 20 can be 1.2D, 1.3D, 1.35D, 1.4D, 1.5D, etc.

[0079] In some embodiments, the weight of the phase change temperature regulating layer 20 is in the range of 80 g / m 2 ~150g / m 2 Within this range, the warmth retention and air permeability of the wadding 100 are good. When the gram weight is greater than 150g / m 2 When the weight is less than 80 g / m 2 When the wadding 100 is thin, has poor air permeability, is not wear-resistant, and does not have sufficient warmth retention performance.

[0080] The weight range of the phase change temperature regulating layer 20 can be 80 g / m 2 ~90g / m 2 , 80g / m 2 ~85g / m 2 , 90g / m 2 ~150g / m 2 , 100g / m 2 ~110g / m 2 , 120g / m2 ~150g / m 2 The weight of the moisture-conducting antibacterial layer 10 can be 80 g / m 2 , 90g / m 2 , 96g / m 2 , 123g / m 2 , 150g / m 2 wait.

[0081] See also Figure 2 In some embodiments, the flakes 100 further include a heat insulating layer 30 and a connecting layer 40. The heat insulating layer 30 is spaced apart from the phase change temperature regulating layer 20, and the heat insulating layer 30 includes a foam material layer 31 and a hydrophobic layer 32, which are stacked; the connecting layer 40 is disposed between the phase change temperature regulating layer 20 and the heat insulating layer 30, and the connecting layer 40 connects the phase change temperature regulating layer 20 and the heat insulating layer 30, and the connecting layer 40, the phase change temperature regulating layer 20 and the heat insulating layer 30 form a cavity 50 together.

[0082] In this way, the foam material layer 31 enables the thermal insulation layer 30 to store more still air, so that the flakes 100 can have better thermal insulation; in addition, the foam material layer 31 can enhance the elastic recovery of the flakes 100, so that the flakes 100 have good shape retention; the hydrophobic layer 32 can reduce the heat loss caused by the internal water loss of the thermal insulation layer 30, so that the flakes 100 can have better thermal insulation; the connecting layer 40 can enhance the connection stability between the phase change temperature regulating layer 20 and the thermal insulation layer 30, thereby reducing the adverse effects of external pressure during use and reducing the probability of the structure of the flakes 100 being damaged. The cavity 50 can store more still air, so that the flakes 100 can have better thermal insulation.

[0083] Specifically, the heat insulation layer 30 can be a structure for heat insulation and heat preservation in the flakes 100. The heat insulation function can be achieved by using materials with low thermal conductivity, and the heat preservation function can be achieved by storing still air in the cavity 50. The connecting layer 40 can be a structure for connecting the layers inside the flakes 100. The connecting layer 40 can be connected to the layers by stitching, gluing, bonding, etc. In the textile, one side of the connecting layer 40 can be connected to the side of the phase change thermostatic layer 20 facing the outside, and the other side can be connected to the heat insulation layer 30, or in other words, compared with the phase change thermostatic layer 20, the heat insulation layer 30 is arranged closer to the outside.

[0084] In some embodiments, the basis weight of the foam material layer 31 is in the range of 20 kg / m 3 ~30kg / m 3Within this range, the weight and density of the foam material layer 31 are appropriate, and the wearing comfort and warmth retention of the wadding 100 are improved. When the quantitative volume of the foam material layer 31 is less than 20 kg / m 3 When the foam material layer 31 is fragile, the cushioning performance and thermal insulation performance of the flakes 100 are low; when the quantitative volume of the foam material layer 31 is greater than 30kg / m 3 At the same time, the foam material is too heavy and difficult to process, which will also increase the cost.

[0085] The quantitative volume range of the foam material layer 31 can be 22 kg / m 3 ~29kg / m 3 , 25kg / m 3 ~29kg / m 3 , 20kg / m 3 ~25kg / m 3 , 21kg / m 3 ~24kg / m 3 , 4kg / m 3 ~30kg / m 3 The quantitative volume of the foam material layer 31 can be 20 kg / m 3 , 21kg / m 3 , 25kg / m 3 , 27kg / m 3 、30kg / m 3 wait.

[0086] In some embodiments, the thickness h of the foam material layer 31 ranges from 2 mm to 6 mm. Within this range, the size of the foam material layer 31 is appropriate, so that the warmth retention of the flakes 100 is good, and the production cost of the foam material layer 31 is low. When the thickness h of the foam material layer 31 is less than 2 mm, the heat preservation effect of the flakes 100 is poor, and it is also prone to deformation, rupture and other problems. In addition, the service life of the flakes 100 may be shortened because the foam material layer 31 cannot withstand the adverse effects of external pressure well; when the thickness h of the foam material layer 31 is greater than 6 mm, the thickness of the flakes 100 is too large, thereby increasing the overall weight of the flakes 100, reducing the wearing comfort and increasing the cost.

[0087] In some embodiments, the hydrophobic layer 32 has a grammage range of 35 g / m 2 ~70g / m 2 Within this range, the hydrophobic layer 32 has a good effect of reducing the water loss inside the heat insulation layer 30, and the heat is not easily lost, so that the warmth retention of the wadding 100 is good. When the weight of the hydrophobic layer 32 is less than 35g / m 2When the water loss inside the heat insulation layer is large, the heat is continuously lost, thereby reducing the warmth retention of the flakes 100; when the weight of the hydrophobic layer 32 is greater than 70g / m 2 When the weight of the hydrophobic layer 32 is large, the weight of the flakes 100 is large, which affects the wearing comfort and makes the manufacturing cost of the flakes 100 high.

[0088] The hydrophobic layer 32 may have a gram weight range of 35 g / m 2 ~60g / m 2 , 40g / m 2 ~55g / m 2 , 45g / m 2 ~50g / m 2 , 50g / m 2 ~65g / m 2 , 55g / m 2 ~70g / m 2 The weight of the hydrophobic layer 32 may be 35 g / m 2 , 40g / m 2 , 45g / m 2 , 50g / m 2 , 70g / m 2 wait.

[0089] See also Figure 2 In some embodiments, the hydrophobic layer 32 is provided with openings 320. Thus, the hydrophobic layer 32 has better moisture dissipation, thereby improving the wearing comfort of the flakes 100.

[0090] Specifically, the number of openings 320 can be multiple, and the multiple openings 320 can be arranged along the same or different paths. The distances between adjacent openings 320 can be the same or different. Before the hydrophobic layer 32 is attached to the foam material layer 31, the openings 320 can be provided on the surface of the hydrophobic layer 32.

[0091] In some embodiments, the density of the openings 320 ranges from 2 / cm 2 ~6 pieces / cm 2 Within this range, the hydrophobic layer 32 has a better moisture dissipation property, thereby improving the wearing comfort of the flakes 100. When the density of the openings 320 is less than 2 / cm 2 When the density of the openings 320 is greater than 6 / cm, the moisture dissipation of the hydrophobic layer 32 is poor, resulting in a stuffy or humid feeling during wearing. 2 When the moisture dissipation of the hydrophobic layer 32 is not significantly improved, the cost is increased.

[0092] The density of the openings 320 may be 2 / cm 2 ~5 pieces / cm 2, 2 pieces / cm 2 ~4 pieces / cm 2 , 2 pieces / cm 2 ~3 pieces / cm 2 , 3 pieces / cm 2 ~5 pieces / cm 2 , 4 pieces / cm 2 ~6 pieces / cm 2 The density of the openings 320 may be 2 / cm 2 , 3 pieces / cm 2 , 4 pieces / cm 2 , 5 pieces / cm 2 , 6 pieces / cm 2 wait.

[0093] See also Figure 2 In some embodiments, the connecting layer 40 includes a Velcro 41, which is disposed between the phase change temperature regulating layer 20 and the thermal insulation layer 30. The Velcro 41 connects the phase change temperature regulating layer 20 and the thermal insulation layer 30. There are multiple Velcros 41, and the multiple Velcros 41 are arranged at intervals. Two adjacent Velcros 41, the phase change temperature regulating layer 20 and the thermal insulation layer 30 together form a cavity 50.

[0094] In this way, the Velcro 41 can stably connect the phase change temperature regulating layer 20 and the thermal insulation layer 30, reducing the probability that the flakes 100 material is adversely affected by external pressure during use. At the same time, the use of the Velcro 41 can facilitate the replacement of the phase change temperature regulating layer 20, the thermal insulation layer 30, etc. of the flakes 100 during use, and handle them separately, such as drying, etc., which enhances the practicality and usability of the flakes 100.

[0095] Specifically, the Velcro 41 is a commonly used connecting auxiliary material on textiles. The Velcro 41 has good elastic properties, so the flakes 100 have strong elastic recovery ability, so that the flakes 100 have excellent shape retention. The number of Velcro 41 can be two, three, four or even more, and multiple Velcro 41 can be arranged at intervals along the same or different paths. The two sides of the Velcro 41 can be respectively attached to the phase change temperature regulating layer 20 and the heat insulation layer 30. The distance d between two adjacent Velcro 41 can be the same or different. Along the arrangement direction of the Velcro 41, the end faces of two adjacent Velcro 41 can form a cavity 50 together with the phase change temperature regulating layer 20 and the heat insulation layer 30. The shape of the cavity 50 can be regular shapes such as round and rectangular, or it can be an irregular shape.

[0096] See also Figure 2In some embodiments, the width w of the Velcro 41 ranges from 3 mm to 6 mm. Within this range, the Velcro 41 can stably connect the layers in the flakes 100, so that the structure of the flakes 100 is stable. When the width w of the Velcro 41 is less than 3 mm, the elasticity of the Velcro 41 is poor, so that the flakes 100 are not easy to elastically recover under the action of external force, so that the shape retention of the flakes 100 is poor. When the width w of the Velcro 41 is greater than 6 mm, the Velcro 41 is not easy to deform, so that the wearing comfort of the flakes 100 is poor.

[0097] Among them, the width w of the Velcro 41 can range from 3mm to 5mm, 3mm to 4mm, 4mm to 5mm, 4mm to 6mm, 4mm to 5mm, etc., and the width w of the Velcro 41 can range from 3mm to 5mm, 3mm to 4mm, 4.5mm, 5mm, 6mm, etc.

[0098] See also Figure 2 In some embodiments, the distance d between two adjacent Velcro strips 41 ranges from 15 mm to 25 mm. Within this range, the size of the cavity 50 formed by two adjacent Velcro strips 41 is appropriate, which increases the static air in the flakes 100, thereby improving the warmth retention of the flakes 100. At the same time, the Velcro strips 41 can effectively enhance the elastic recovery of the flakes 100, so that the shape retention of the flakes 100 is better. When the distance d between two adjacent Velcro strips 41 is less than 15 mm, the spacing between the Velcro strips 41 is too small, the size of the cavity 50 is small, and the static air stored in the cavity 50 is less, so that the warmth retention of the flakes 100 is poor; when the distance d between two adjacent Velcro strips 41 is greater than 25 mm, the spacing between the Velcro strips 41 is too large, the overall elastic performance of the Velcro strips 41 is weak, and the shape retention of the flakes 100 is poor.

[0099] Among them, the distance d between two adjacent Velcro strips 41 can range from 15mm to 24mm, 16mm to 24mm, 18mm to 20mm, 20mm to 23mm, 22mm to 25mm, etc., and the distance d between two adjacent Velcro strips 41 can be 15mm, 17mm, 20mm, 23mm, 25mm, etc.

[0100] See also Figure 3 The method for preparing the flakes 100 according to the embodiment of the present invention comprises:

[0101] S10, providing a moisture-conducting antibacterial layer 10, wherein the moisture-conducting antibacterial layer 10 comprises a first moisture-conducting low-melting-point short fiber and an antibacterial and antiviral modified cotton fiber, wherein the mass ratio of the first moisture-conducting low-melting-point short fiber to the antibacterial and antiviral modified cotton fiber is 15% to 30%: 70% to 85%;

[0102] S20 , stacking the phase change temperature regulating layer 20 on the moisture conductive antibacterial layer 10 , the phase change temperature regulating layer 20 is used to adjust the temperature of the flakes 100 .

[0103] In this way, the prepared flakes 100 have good phase change temperature regulation, antibacterial and antiviral properties, and excellent heat preservation effect. Specifically, the melting phase change enthalpy of the flakes 100 is 15.2 J / g to 30.5 J / g, the crystallization phase change enthalpy is 13.9 J / g to 29.6 J / g; the inhibition rate of Staphylococcus aureus is ≥ 88.3%, and the inhibition rate of Candida albicans is ≥ 89.1%; the clo value is 1.89 clo to 2.38 clo, and the elastic recovery rate is ≥ 90%.

[0104] Among them, the melting phase change enthalpy and crystallization phase change enthalpy of flake 100 are measured according to GB / T19466.3-2004 "Plastic Differential Scanning Calorimetry (DSC) Part 3: Determination of Melting and Crystallization Temperature and Enthalpy", the inhibition rate of flake 100 on Staphylococcus aureus and Candida albicans is measured according to GBT20944.3-2008 "Evaluation of Antibacterial Properties of Textiles Part 3: Oscillation Method", and the Krogh value of flake 100 is measured according to GB / T11048 "Determination of Thermal Resistance and Moisture Resistance of Textiles under Steady-State Conditions of Physiological Comfort".

[0105] Specifically, the number of the phase change temperature regulating layer 20 can be one or more layers, for example, the number of the phase change temperature regulating layer 20 can be 1 to 2 layers. The number of the moisture conductive antibacterial layer 10 can be one or more layers, for example, the number of the moisture conductive antibacterial layer 10 can be 1 to 2 layers.

[0106] See also Figure 4 In some embodiments, the moisture-conducting antibacterial layer 10 is prepared by the following steps:

[0107] S11, opening, evenly blending, and laying and combing the first moisture-conducting low-melting-point short fibers and the antibacterial and antiviral modified cotton fibers in a mass ratio of 15% to 30%:70% to 85%, and obtaining a first intermediate layer;

[0108] S12, performing a nonwoven fabric spunlace process on the first intermediate layer to obtain a moisture-conducting and antibacterial layer 10.

[0109] In this way, the provision of the moisture-conducting antibacterial layer 10 enables the flakes 100 to have moisture-conducting and antibacterial functions; the moisture-conducting antibacterial layer 10 produced by the non-woven fabric spunlace process is soft and comfortable, which makes the wearer more comfortable to wear; in addition, no organic solvent is used in the preparation process of the moisture-conducting antibacterial layer 10, so the flakes 100 are more environmentally friendly.

[0110] Specifically, the first intermediate layer may be a raw material layer for preparing the moisture-conducting antibacterial layer 10 .

[0111] See also Figure 5 In some embodiments, the phase change temperature adjustment layer 20 is prepared by the following steps:

[0112] S21, the phase change temperature regulating layer 20 including the second moisture conductive low melting point short fiber and the phase change temperature regulating fiber is subjected to fiber opening, uniform cotton mixing, cotton laying and combing treatment in a mass ratio of 20% to 32%: 68% to 80% to obtain a second intermediate layer;

[0113] S22 , performing a needle punching process on the second intermediate layer to obtain a phase change temperature regulating layer 20 .

[0114] In this way, the setting of the phase change temperature regulating layer 20 enables the flakes 100 to have an intelligent two-way temperature regulating function in a short time; the phase change temperature regulating layer 20 produced by the needle punching process has good dimensional stability and elasticity; in addition, no organic solvent is used in the preparation process of the phase change temperature regulating layer 20, so the flakes 100 are more environmentally friendly.

[0115] Specifically, the second intermediate layer may be a raw material layer for preparing the phase-change temperature adjustment layer 20 .

[0116] See also Figure 6 In some embodiments, the preparation method further comprises:

[0117] S30, providing a heat insulation layer 30, wherein the heat insulation layer 30 is spaced apart from the phase change temperature regulating layer 20, and the heat insulation layer 30 comprises a foam material layer 31 and a hydrophobic layer 32, wherein the foam material layer 31 and the hydrophobic layer 32 are stacked;

[0118] S40 , disposing a connection layer 40 between the phase change temperature regulating layer 20 and the heat insulation layer 30 , the connection layer 40 connects the phase change temperature regulating layer 20 and the heat insulation layer 30 , and the connection layer 40 , the phase change temperature regulating layer 20 and the heat insulation layer 30 together form a cavity 50 .

[0119] In this way, the foam material layer 31 enables the thermal insulation layer 30 to store more still air, so that the flakes 100 can have better thermal insulation; in addition, the foam material layer 31 can enhance the elastic recovery of the flakes 100, so that the flakes 100 have good shape retention; the hydrophobic layer 32 can reduce the heat loss caused by the internal water loss of the thermal insulation layer 30, so that the flakes 100 can have better thermal insulation; the connecting layer 40 can enhance the connection stability between the phase change temperature regulating layer 20 and the thermal insulation layer 30, thereby reducing the adverse effects of external pressure during use and reducing the probability of the structure of the flakes 100 being damaged. The cavity 50 can store more still air, so that the flakes 100 can have better thermal insulation.

[0120] See also Figure 7 In some embodiments, the thermal insulation layer 30 is prepared by the following steps:

[0121] S31, a side surface of the foam material is bonded with the hydrophobic aerogel cloth to obtain a heat insulation layer 30, the foam material forms a foam material layer 31, and the hydrophobic aerogel cloth forms a hydrophobic layer 32. The foam material is porous and can store more still air, so that the flakes 100 have better warmth retention. In addition, the foam material has good water absorption and water storage properties, the hydrophobic aerogel cloth has low thermal conductivity and good thermal insulation performance, and the hydrophobic aerogel cloth has good hydrophobic and water-repellent function. The hydrophobic aerogel cloth can reduce the heat loss caused by the loss of water inside the flakes 100, so that the thermal insulation effect of this layer is better.

[0122] Specifically, the foam material may include at least one of cellulose foam material, polyvinyl alcohol foam material or polyurethane foam material, and the hydrophobic aerogel cloth may be a silicon aerogel cloth, etc. The hydrophobic aerogel cloth may be one layer or more layers, for example, the hydrophobic aerogel cloth may be 1 to 2 layers. The bonding process of the foam material and the hydrophobic aerogel cloth may be suturing, gluing and compounding, bonding, etc. For example, the bonding process of the foam material and the hydrophobic aerogel cloth is suturing, specifically suturing with nylon staple fiber yarn, and the preferred nylon staple fibers are nylon 6 and nylon 66, with a linear density of 80dtex to 100dtex, and a suture point density of 5 / cm 2 ~10 / cm 2 .

[0123] See also Figure 8 In some embodiments, the connecting layer 40 is prepared by the following steps:

[0124] S41, provide Velcro 41, set the Velcro 41 between the phase change temperature regulating layer 20 and the thermal insulation layer 30, the Velcro 41 connects the phase change temperature regulating layer 20 and the thermal insulation layer 30, there are multiple Velcro 41, the multiple Velcro 41 are arranged at intervals, and two adjacent Velcro 41, the phase change temperature regulating layer 20 and the thermal insulation layer 30 form a cavity 50 together, thereby obtaining a connecting layer 40.

[0125] In this way, the Velcro 41 can stably connect the phase change temperature regulating layer 20 and the thermal insulation layer 30, reducing the probability that the flakes 100 material is adversely affected by external pressure during use. At the same time, the use of the Velcro 41 can facilitate the replacement of the phase change temperature regulating layer 20, the thermal insulation layer 30, etc. of the flakes 100 during use, and handle them separately, such as drying, etc., which enhances the practicality and usability of the flakes 100.

[0126] Specifically, the Velcro 41 can be adhered to the upper surface of the phase change temperature regulating layer 20 (i.e., the surface of the phase change temperature regulating layer 20 facing outward) after the phase change temperature regulating layer 20 is produced, or it can be adhered to the lower surface of the thermal insulation layer 30 (i.e., the surface of the thermal insulation layer 30 facing inward) after the thermal insulation layer 30 is produced.

[0127] See also Fig. 9 In some embodiments, the preparation method further comprises:

[0128] S50, combining the moisture-conducting antibacterial layer 10 with the phase-change temperature-regulating layer 20 to obtain a first composite layer;

[0129] S60, combining the first composite layer and the heat insulation layer 30 via the connecting layer 40, so as to obtain a second composite layer.

[0130] Thus, the preparation process of the flakes 100 is simple and easy to implement.

[0131] Specifically, the first moisture conductive low-melting point short fibers and the second moisture conductive low-melting point short fibers in the lower surface of the phase change thermoregulating layer 20 and the upper surface of the moisture conductive antibacterial layer 10 are thermally fused, and the thermal fusion temperature may be 110° C. to 180° C. When the phase change thermoregulating layer 20 is multi-layered, the upper surface of the phase change thermoregulating layer 20 refers to the upper surface of the phase change thermoregulating layer 20 of the uppermost layer, and the lower surface of the phase change thermoregulating layer 20 refers to the lower surface of the phase change thermoregulating layer 20 of the lowermost layer. Similarly, when the moisture conductive antibacterial layer 10 is multi-layered, the upper surface of the moisture conductive antibacterial layer 10 refers to the upper surface of the moisture conductive antibacterial layer 10 of the uppermost layer, and the lower surface of the moisture conductive antibacterial layer 10 refers to the lower surface of the moisture conductive antibacterial layer 10 of the lowermost layer.

[0132] Among them, the upper surface refers to the surface close to the outside, and the lower surface refers to the surface close to the inside (i.e., the wearer). For example, the lower surface of the moisture-conducting antibacterial layer 10 refers to the surface closest to the wearer. The moisture-conducting antibacterial layer 10 directly affects the wearing comfort of the wearer. Since the lower surface of the moisture-conducting antibacterial layer 10 is not heat-treated, the flakes 100 have good softness and comfort.

[0133] After the heat fusion is completed, the moisture-conducting antibacterial layer 10 and the phase change temperature regulating layer 20 are sewn together using the "sewing" technology. The sewing can be made of nylon staple fiber blended yarn, which can be made of nylon staple fiber, Chitosan antibacterial cotton and The thermostatic fibers are evenly blended in a ratio of 20% to 30%: 30% to 40%: 30% to 40%, with a linear density of 80dtex to 100dtex and a stitching point density of 2 / cm 2 ~5 pieces / cm 2By using two physical methods, heat fusion and sewing, the stability of the first composite layer formed by the moisture-conducting antibacterial layer 10 and the phase-change temperature-regulating layer 20 is improved, so that the structural stability of the flakes 100 is high, thereby reducing the adverse effects of external pressure during use. In addition, by connecting the moisture-conducting antibacterial layer 10 and the phase-change temperature-regulating layer 20 by physical methods, the environmental protection of the flakes 100 can be improved.

[0134] The connecting layer 40 may include a plurality of Velcro strips 41. During the sewing process, the Velcro strips 41 may be sewn to the sewing point on the upper surface of the phase change thermoregulating layer 20 (i.e., the upper surface of the first composite layer), which is the sewing point when the phase change thermoregulating layer 20 is sewn to the moisture conducting antibacterial layer 10. Nylon staple fiber blended yarn may be used for sewing, and the density of the sewing point is 10 / cm 2 ~15 pieces / cm 2 .

[0135] Furthermore, the lower surface of the heat insulating layer 30 is also sewn with Velcro 41, and the sewing position corresponds to the sewing position of the first composite layer and Velcro 41, so that the first composite layer and the heat insulating layer 30 can be better fitted, and the composite structure of the first composite layer, Velcro 41 (connecting layer 40) and the heat insulating layer 30 is the second composite layer, i.e., the flakes 100. The materials and sewing methods used in the sewing are the same as those when the Velcro 41 is sewn on the phase change thermostatic layer 20.

[0136] Example 1

[0137] In this embodiment, the flakes 100 are prepared by the following method:

[0138] First, the moisture-conducting antibacterial layer 10 is prepared. The first moisture-conducting low-melting point short fiber and the antibacterial and antiviral modified cotton fiber are subjected to fiber opening, uniform cotton mixing, cotton laying and combing in a mass ratio of 15%:85%, and the first intermediate layer is obtained. Then, the first intermediate layer is subjected to a non-woven fabric spunlace process to obtain the moisture-conducting antibacterial layer 10. The weight of the moisture-conducting antibacterial layer 10 is 100 g / m 2 The first moisture conductive low melting point short fiber includes polylactic acid short fiber, and the linear density of the first moisture conductive low melting point short fiber is 1.5D. The antibacterial and antiviral modified cotton fiber is Antiviral cotton.

[0139] Then, the phase change thermoregulating layer 20 is prepared. The phase change thermoregulating layer 20 is prepared by opening the second moisture conductive low melting point short fiber and the phase change thermoregulating fiber in a mass ratio of 20%:80%, uniformly blending the fibers, and performing a cotton laying and combing process to obtain a second intermediate layer, and then performing a needle punching process on the second intermediate layer to obtain the phase change thermoregulating layer 20. The gram weight of the phase change thermoregulating layer 20 is 150g / m 2The second moisture conductive low melting point short fiber includes polylactic acid short fiber, and the linear density of the second moisture conductive low melting point short fiber is 1.5D. The phase change temperature regulating fiber includes phase change temperature regulating polyester fiber, and the phase change temperature regulating fiber can be prepared by adding phase change energy storage material during the spinning process, so that the phase change temperature regulating performance is durable.

[0140] Then, the heat insulation layer 30 is prepared. One side surface of the foam material is bonded with the hydrophobic aerogel cloth to obtain the heat insulation layer 30. The foam material forms a foam material layer 31, and the hydrophobic aerogel cloth forms a hydrophobic layer 32. The foam material includes a cellulose foam material, and the quantitative volume of the foam material layer 31 is 30 kg / m 3 The thickness h of the foam material layer 31 is 2 mm; the weight of the hydrophobic layer 32 formed by the hydrophobic aerogel cloth is 35 g / m 2 The hydrophobic aerogel cloth is made of silicon aerogel cloth. Before the hydrophobic aerogel cloth is bonded to the foam material, holes are punched on the surface of the hydrophobic aerogel cloth with a hole density of 6 holes / cm 2 .

[0141] The laminating process of the foam material and the hydrophobic aerogel cloth is stitching, gluing, compounding and bonding, and the hydrophobic aerogel cloth is one layer. The laminating process of the foam material and the hydrophobic aerogel cloth is a stitching process, and the laminating process of the foam material and the hydrophobic aerogel cloth is stitched by nylon staple fiber yarn. Among them, the nylon staple fiber includes nylon 6, the linear density of the nylon staple fiber is 80dtex, and the stitching point density of the nylon staple fiber is 10 / cm 2 .

[0142] Then, the first composite layer is prepared. The first moisture-conducting low-melting-point short fibers and the second moisture-conducting low-melting-point short fibers in the upper surface of the moisture-conducting antibacterial layer 10 and the lower surface of the phase-change temperature-regulating layer 20 are thermally fused at a thermal fusion temperature of 180°C. One layer of the moisture-conducting antibacterial layer 10 and one layer of the phase-change temperature-regulating layer 20 are used. After the thermal fusion is completed, the moisture-conducting antibacterial layer 10 and the phase-change temperature-regulating layer 20 are sewn together using the "sewing" technology. The sew-on yarn is made of nylon staple fibers, Chitosan antibacterial cotton and The thermostatic fibers are evenly blended in a ratio of 20%:30%:50%. The linear density of the nylon staple fiber blended yarn is 80dtex, and the stitching point density of the nylon staple fiber blended yarn is 2 / cm 2 .

[0143] Then, the second composite layer is prepared. The upper surface of the first composite layer is sewn with the heat insulation layer 30, specifically, Velcro 41 is used to sew at the corresponding sew points, which are the sew points when the phase change thermostatic layer 20 is sewn with the moisture conductive antibacterial layer 10. The Velcro 41 is 6 mm wide, the distance between the Velcro 41 is 15 mm, and the Velcro 41 is continuously connected at the head and foot. Nylon staple fiber blended yarn is used for sew, and the density of sew points is 10 / cm 2 The lower surface of the heat insulation layer 30 is also sewn with Velcro 41, and the sewing position corresponds to the sewing position of the first composite layer and Velcro 41, so that the first composite layer and the heat insulation layer 30 can be better fitted. The composite structure of the first composite layer, Velcro 41 (connecting layer 40) and the heat insulation layer 30 is the second composite layer, i.e., the flakes 100. The materials and sewing methods used in the sewing are the same as those when the Velcro 41 is sewn on the phase change temperature regulating layer 20.

[0144] Finally, the melting phase change enthalpy of the flakes 100 was 22.6 J / g, the crystallization phase change enthalpy was 21.9 J / g; the inhibition rate against Staphylococcus aureus was 93.6%, and the inhibition rate against Candida albicans was 94.1%; the Clo value was 1.89clo, and the elastic recovery rate was 95%.

[0145] Example 2

[0146] In this embodiment, the flakes 100 are prepared by the following method:

[0147] First, the moisture-conducting antibacterial layer 10 is prepared. The first moisture-conducting low-melting point short fiber and the antibacterial and antiviral modified cotton fiber are subjected to fiber opening, uniform cotton mixing, cotton laying and combing in a mass ratio of 23%:77%, and the first intermediate layer is obtained. Then, the first intermediate layer is subjected to a non-woven fabric spunlace process to obtain the moisture-conducting antibacterial layer 10. The weight of the moisture-conducting antibacterial layer 10 is 80 g / m 2 The first moisture conductive low melting point short fiber includes polypropylene short fiber, and the linear density of the first moisture conductive low melting point short fiber is 1.2D. The antibacterial and antiviral modified cotton fiber is Chitosan antibacterial cotton.

[0148] Then, the phase change thermoregulating layer 20 is prepared. The phase change thermoregulating layer 20 is prepared by opening the second moisture conductive low melting point short fiber and the phase change thermoregulating fiber in a mass ratio of 25%:75%, uniformly blending the fiber, and performing a cotton laying and combing process to obtain a second intermediate layer, and then performing a needle punching process on the second intermediate layer to obtain the phase change thermoregulating layer 20. The gram weight of the phase change thermoregulating layer 20 is 125g / m 2The second moisture conductive low melting point short fiber includes polypropylene short fiber, and the linear density of the second moisture conductive low melting point short fiber is 1.2D. The phase change temperature regulating fiber includes phase change temperature regulating acrylic short fiber, and the phase change temperature regulating fiber can be prepared by adding phase change energy storage material during the spinning process, so that the phase change temperature regulating performance is durable.

[0149] Then, the heat insulation layer 30 is prepared. One side surface of the foam material is bonded with the hydrophobic aerogel cloth to obtain the heat insulation layer 30. The foam material forms a foam material layer 31, and the hydrophobic aerogel cloth forms a hydrophobic layer 32. The foam material includes a polyvinyl alcohol foam material, and the quantitative volume of the foam material layer 31 is 25 kg / m 3 The thickness h of the foam material layer 31 is 4 mm; the weight of the hydrophobic layer 32 formed by the hydrophobic aerogel cloth is 50 g / m 2 The hydrophobic aerogel cloth is made of silicon aerogel cloth. Before the hydrophobic aerogel cloth is bonded to the foam material, holes are punched on the surface of the hydrophobic aerogel cloth with a hole density of 4 holes / cm 2 .

[0150] The lamination process of the foam material and the hydrophobic aerogel cloth is stitching, gluing, compounding and bonding. The hydrophobic aerogel cloth is 2 layers. The lamination process of the foam material and the hydrophobic aerogel cloth is a stitching process. The foam material and the hydrophobic aerogel cloth are stitched by nylon staple fiber yarn. Among them, the nylon staple fiber includes nylon 66, the linear density of the nylon staple fiber is 90dtex, and the stitching point density of the nylon staple fiber is 8 / cm 2 .

[0151] Then, the first composite layer is prepared. The first moisture-conducting low-melting-point short fibers and the second moisture-conducting low-melting-point short fibers in the upper surface of the moisture-conducting antibacterial layer 10 and the lower surface of the phase-change temperature-regulating layer 20 are thermally fused at a thermal fusion temperature of 160°C. Two layers of the moisture-conducting antibacterial layer 10 and two layers of the phase-change temperature-regulating layer 20 are used. After the thermal fusion is completed, the moisture-conducting antibacterial layer 10 and the phase-change temperature-regulating layer 20 are sewn together using the "sewing" technology. The sew-on yarn is made of nylon staple fibers, Chitosan antibacterial cotton and The thermostatic fibers are evenly blended in a ratio of 25%:35%:40%. The linear density of the nylon staple fiber blended yarn is 90dtex, and the stitching point density of the nylon staple fiber blended yarn is 4 / cm 2 .

[0152] Then, the second composite layer is prepared. The upper surface of the first composite layer is sewn with the heat insulation layer 30, specifically, Velcro 41 is used to sew at the corresponding sew points, which are the sew points when the phase change thermostatic layer 20 is sewn with the moisture conductive antibacterial layer 10. The Velcro 41 has a width of 5 mm, the distance between the Velcro 41 is 20 mm, and the Velcro 41 is continuously connected at the head and foot. Nylon staple fiber blended yarn is used for sew, and the density of sew points is 12 / cm 2 The lower surface of the heat insulation layer 30 is also sewn with Velcro 41, and the sewing position corresponds to the sewing position of the first composite layer and Velcro 41, so that the first composite layer and the heat insulation layer 30 can be better fitted. The composite structure of the first composite layer, Velcro 41 (connecting layer 40) and the heat insulation layer 30 is the second composite layer, i.e., the flakes 100. The materials and sewing methods used in the sewing are the same as those when the Velcro 41 is sewn on the phase change temperature regulating layer 20.

[0153] Finally, the melting phase change enthalpy of flakes 100 was 30.5 J / g, the crystallization phase change enthalpy was 29.6 J / g; the inhibition rate against Staphylococcus aureus was 91.2%, and the inhibition rate against Candida albicans was 92.0%; the Clo value was 2.11clo, and the elastic recovery rate was 92.3%.

[0154] Example 3

[0155] In this embodiment, the flakes 100 are prepared by the following method:

[0156] First, the moisture-conducting antibacterial layer 10 is prepared. The first moisture-conducting low-melting point short fiber and the antibacterial and antiviral modified cotton fiber are subjected to fiber opening, uniform cotton mixing, cotton laying and combing in a mass ratio of 30%:70%, and the first intermediate layer is obtained. Then, the first intermediate layer is subjected to a non-woven fabric spunlace process to obtain the moisture-conducting antibacterial layer 10. The weight of the moisture-conducting antibacterial layer 10 is 60 g / m 2 The first moisture-conducting low-melting-point short fiber includes a cross-shaped polyester short fiber, and the linear density of the first moisture-conducting low-melting-point short fiber is 1.2D. The antibacterial and antiviral modified cotton fiber is Instant deodorizing fibers and Zinc Shield fiber is mixed in a 50%:50% ratio.

[0157] Then, the phase change thermoregulating layer 20 is prepared. The phase change thermoregulating layer 20 is obtained by opening the second moisture conductive low melting point short fiber and the phase change thermoregulating fiber in a mass ratio of 32%:78%, uniformly mixing the fibers, and performing a cotton laying and combing process to obtain a second intermediate layer, and then performing a needle punching process on the second intermediate layer to obtain the phase change thermoregulating layer 20. The gram weight of the phase change thermoregulating layer 20 is 80g / m 2The second moisture-conducting low-melting-point short fibers include cross-shaped polyester short fibers, and the linear density of the second moisture-conducting low-melting-point short fibers is 1.2D. The phase change temperature regulating fibers include Constant temperature fiber and phase change temperature regulating fiber can be prepared by adding phase change energy storage material during the spinning process, so that the phase change temperature regulating performance is long-lasting.

[0158] Then, the heat insulation layer 30 is prepared. One side surface of the foam material is bonded with the hydrophobic aerogel cloth to obtain the heat insulation layer 30. The foam material forms a foam material layer 31, and the hydrophobic aerogel cloth forms a hydrophobic layer 32. The foam material includes a polyurethane foam material, and the quantitative volume of the foam material layer 31 is 20 kg / m 3 The thickness h of the foam material layer 31 is 6 mm; the weight of the hydrophobic layer 32 formed by the hydrophobic aerogel cloth is 70 g / m 2 The hydrophobic aerogel cloth is made of silicon aerogel cloth. Before the hydrophobic aerogel cloth is bonded to the foam material, holes are punched on the surface of the hydrophobic aerogel cloth with a hole density of 2 holes / cm 2 .

[0159] The lamination process of the foam material and the hydrophobic aerogel cloth is stitching, gluing, compounding and bonding, and the hydrophobic aerogel cloth is one layer. The lamination process of the foam material and the hydrophobic aerogel cloth is a stitching process, and the foam material and the hydrophobic aerogel cloth are stitched by nylon staple fiber yarn. Among them, the nylon staple fiber includes nylon 66, the linear density of the nylon staple fiber is 100dtex, and the stitching point density of the nylon staple fiber is 5 / cm 2 .

[0160] Then, the first composite layer is prepared. The first moisture-conducting low-melting-point short fibers and the second moisture-conducting low-melting-point short fibers in the upper surface of the moisture-conducting antibacterial layer 10 and the lower surface of the phase-change temperature-regulating layer 20 are thermally fused at a thermal fusion temperature of 110°C. One layer of the moisture-conducting antibacterial layer 10 and two layers of the phase-change temperature-regulating layer 20 are used. After the thermal fusion is completed, the moisture-conducting antibacterial layer 10 and the phase-change temperature-regulating layer 20 are sewn together using the "sewing" technology. The sew-on yarn is made of nylon staple fibers, Chitosan antibacterial cotton and The thermostatic fibers are evenly blended in a ratio of 30%:40%:30%. The linear density of the nylon staple fiber blended yarn is 100 dtex, and the stitching point density of the nylon staple fiber blended yarn is 5 / cm 2 .

[0161] Then, the second composite layer is prepared. The upper surface of the first composite layer is sewn with the heat insulation layer 30, specifically, Velcro 41 is used to sew at the corresponding sew points, which are the sew points when the phase change thermostatic layer 20 is sewn with the moisture conductive antibacterial layer 10. The Velcro 41 has a width of 3 mm, the distance between the Velcro 41 is 25 mm, and the Velcro 41 is continuously connected at the head and foot. Nylon staple fiber blended yarn is used for sew, and the density of sew points is 10 / cm 2 The lower surface of the heat insulation layer 30 is also sewn with Velcro 41, and the sewing position corresponds to the sewing position of the first composite layer and Velcro 41, so that the first composite layer and the heat insulation layer 30 can be better fitted. The composite structure of the first composite layer, Velcro 41 (connecting layer 40) and the heat insulation layer 30 is the second composite layer, i.e., the flakes 100. The materials and sewing methods used in the sewing are the same as those when the Velcro 41 is sewn on the phase change temperature regulating layer 20.

[0162] Finally, the melting phase change enthalpy of flakes 100 was 15.2 J / g, the crystallization phase change enthalpy was 13.9 J / g; the inhibition rate against Staphylococcus aureus was 88.3%, and the inhibition rate against Candida albicans was 89.1%; the Clo value was 2.38 clo, and the elastic recovery rate was 90%.

[0163] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0164] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A flake, characterized in that: The flakes include: The moisture-conducting antibacterial layer comprises a first moisture-conducting low-melting-point short fiber and an antibacterial and antiviral modified cotton fiber, wherein the mass ratio of the first moisture-conducting low-melting-point short fiber to the antibacterial and antiviral modified cotton fiber is in the range of 15% to 30%: 70% to 85%; A phase change temperature regulating layer is stacked with the moisture conductive antibacterial layer, and the phase change temperature regulating layer is used to regulate the temperature of the flakes.

2. The flakes according to claim 1, characterized in that: The weight range of the moisture-conducting antibacterial layer is 60 g / m 2 ~100g / m 2 .

3. The flakes according to claim 1, characterized in that: The fiber line density in the moisture-conducting and antibacterial layer ranges from 1.2D to 1.5D.

4. The flakes according to claim 1, characterized in that: The phase-change temperature-regulating layer comprises second moisture-conductive low-melting-point short fibers and phase-change temperature-regulating fibers, and the mass ratio of the second moisture-conductive low-melting-point short fibers to the phase-change temperature-regulating fibers is in the range of 20% to 32%: 68% to 80%.

5. The flakes according to claim 4, characterized in that: The fiber line density in the phase change temperature regulating layer ranges from 1.2D to 1.5D.

6. The flakes according to claim 1, characterized in that: The weight range of the phase change temperature regulating layer is 80g / m 2 ~150g / m 2 .

7. The flakes according to claim 1, characterized in that: The flakes also include: A heat insulation layer, wherein the heat insulation layer is spaced apart from the phase change temperature regulating layer, and the heat insulation layer comprises a foam material layer and a hydrophobic layer, wherein the foam material layer and the hydrophobic layer are stacked; A connecting layer is arranged between the phase change temperature regulating layer and the thermal insulation layer, the connecting layer connects the phase change temperature regulating layer and the thermal insulation layer, and the connecting layer, the phase change temperature regulating layer and the thermal insulation layer form a cavity together.

8. The flakes according to claim 7, characterized in that: The quantitative volume range of the foam material layer is 20 kg / m 3 ~30kg / m 3 .

9. The flakes according to claim 7, characterized in that: The thickness of the foam material layer ranges from 2 mm to 6 mm.

10. The flakes according to claim 7, characterized in that: The hydrophobic layer has a grammage range of 35 g / m 2 ~70g / m 2 .

11. The flakes according to claim 7, characterized in that: The hydrophobic layer is provided with openings.

12. The flake according to claim 11, characterized in that: The density of the openings is 2 / cm 2 ~6 pieces / cm 2 .

13. The flakes according to claim 7, characterized in that: The connecting layer includes Velcro, which is arranged between the phase change temperature regulating layer and the thermal insulation layer. The Velcro connects the phase change temperature regulating layer and the thermal insulation layer. There are multiple Velcros, and the multiple Velcros are arranged at intervals. Two adjacent Velcros, the phase change temperature regulating layer and the thermal insulation layer form a cavity together.

14. The flake according to claim 13, characterized in that: The width of the Velcro is in the range of 3 mm to 6 mm.

15. The flake according to claim 13, characterized in that: The distance between two adjacent Velcro strips ranges from 15mm to 25mm.

16. A method for preparing flakes, characterized in that: include: Providing a moisture-conducting antibacterial layer, the moisture-conducting antibacterial layer comprising a first moisture-conducting low-melting-point short fiber and an antibacterial and antiviral modified cotton fiber, wherein the mass ratio of the first moisture-conducting low-melting-point short fiber to the antibacterial and antiviral modified cotton fiber is 15% to 30%: 70% to 85%; A phase-change temperature-regulating layer is stacked on the moisture-conducting and antibacterial layer, and the phase-change temperature-regulating layer is used to regulate the temperature of the flakes.

17. The method for preparing flakes according to claim 16, characterized in that: The moisture-conducting antibacterial layer is prepared by the following steps: The first moisture-conducting low-melting-point short fibers and the antibacterial and antiviral modified cotton fibers are subjected to fiber opening, uniform cotton blending, cotton laying and combing in a mass ratio of 15% to 30%:70% to 85%, and a first intermediate layer is obtained; The first intermediate layer is treated with a nonwoven fabric spunlace process to obtain the moisture-conducting and antibacterial layer.

18. The method for preparing flakes according to claim 16, characterized in that: The phase change temperature adjustment layer is prepared by the following steps: Providing a phase change temperature regulating layer, the phase change temperature regulating layer comprising a second moisture conductive low melting point short fiber and a phase change temperature regulating fiber, the second moisture conductive low melting point short fiber and the phase change temperature regulating fiber are subjected to fiber opening, uniform cotton mixing, cotton laying and combing treatment in a mass ratio of 20% to 32%: 68% to 80% to obtain a second intermediate layer; The second intermediate layer is subjected to a needle punching process to obtain the phase change temperature regulating layer.

19. The method for preparing flakes according to claim 16, characterized in that: The preparation method further comprises: Providing a heat insulation layer, wherein the heat insulation layer is spaced apart from the phase change temperature regulating layer, the heat insulation layer comprises a foam material layer and a hydrophobic layer, and the foam material layer and the hydrophobic layer are stacked; A connection layer is arranged between the phase change temperature regulating layer and the heat insulation layer, the connection layer connects the phase change temperature regulating layer and the heat insulation layer, and the connection layer, the phase change temperature regulating layer and the heat insulation layer form a cavity together.

20. The method for preparing flakes according to claim 19, characterized in that: The thermal insulation layer is prepared by the following steps: The heat insulating layer is obtained by laminating one side surface of the foam material with the hydrophobic aerogel cloth, wherein the foam material forms a foam material layer and the hydrophobic aerogel cloth forms the hydrophobic layer.

21. The method for preparing flakes according to claim 19, characterized in that: The connecting layer is prepared by the following steps: Provide Velcro, and set the Velcro between the phase change temperature regulating layer and the thermal insulation layer. The Velcro connects the phase change temperature regulating layer and the thermal insulation layer. There are multiple Velcros, and the multiple Velcros are arranged at intervals. Two adjacent Velcros, the phase change temperature regulating layer and the thermal insulation layer form a cavity together, so as to obtain the connecting layer.

22. The method for preparing flakes according to claim 19, characterized in that: The preparation method further comprises: Combining the moisture-conducting and antibacterial layer with the phase-change temperature-regulating layer to obtain a first composite layer; The first composite layer is combined with the heat insulation layer through the connecting layer to obtain a second composite layer.

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