Windproof and dustproof heat storage functional non-woven material and preparation method thereof

Abstract

The invention provides a windproof dustproof heat storage functional material and a preparation method thereof. The windproof dustproof heat storage functional material comprises a windproof layer, a dustproof layer and a heat storage layer which are sequentially overlapped, the windproof layer is composed of self-adhesive fibers and fine denier PET fibers; the dustproof layer is composed of 100% fine denier PP fibers; the heat storage layer is composed of heat storage fibers and regenerated cellulose fibers, and a moisturizing auxiliary agent is attached to the skin attaching face in the heat storage layer. Compared with the prior art, the fabric has the beneficial effects that a composite structure of the windproof layer, the dustproof layer and the heat storage layer is adopted, so that the fabric not only has windproof and dustproof effects, but also has certain warm-keeping and moisturizing effects, and multiple functions are integrated. The far infrared powder and the moisturizing auxiliary are combined, and the comfort level and the health function are improved through the heat preservation property (heat locking through the greenhouse effect) and the antibacterial property of the far infrared powder; meanwhile, water on the skin surface is prevented from losing, and the effects of moisturizing and preserving moisture are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of functional non-woven fabric technology, and in particular to a windproof and dustproof heat storage functional material and a preparation method thereof. BACKGROUND

[0002] The existing cycling masks on the market are generally made of polyester and polyamide fibers through traditional textile. Such materials have the disadvantages of high price, heaviness, poor moisture absorption, poor comfort, poor compatibility with helmets, poor PM2.5 or pollen protection, the need for frequent cleaning, the breeding of mold if not dried in time, and environmental unfriendliness. There is no cycling mask made of 100% functional water-jet non-woven fabric, so it is necessary to develop an economical, sanitary, light, moisture-absorbing, comfortable, compatible with helmets, environmentally friendly, and having certain care and protection functions.

[0003] A heat storage non-woven fabric disclosed in a Chinese patent application No. 201921167681.5 is composed of an upper layer of heat storage fiber and polyester short fiber blended non-woven fabric, a lower layer of heat storage fiber and polyester short fiber blended non-woven fabric, and a threading hole. The non-woven fabric has a grammage of 200-300g, and is combined together by a needle punching machine with a reserved threading hole. The disadvantage of this scheme is that the product has a high grammage, is not light, has poor moisture absorption, poor comfort, and no skin care function.

[0004] A functional composite non-woven fabric disclosed in a Chinese patent application No. 201921167681.5 includes an outer layer and an inner layer, a first intermediate layer and a second intermediate layer, a first extension and a second extension, and the first extension and the second extension are respectively sewn with the first intermediate layer and the second intermediate layer. The inner layer has grooves with equal intervals on one side facing the outer layer, the first intermediate layer and the second intermediate layer have far infrared ceramic powder coatings on one side facing the inner layer, and the second intermediate layer is located in the grooves and is integrally bonded with the inner layer at the groove wall. The disadvantage of this scheme is that the structure is complex, not soft enough to the skin, poor comfort, and no skin care function. SUMMARY

[0005] To solve the problems of high cost, poor moisture absorption, heaviness, poor comfort, poor protection against PM2.5, pollen and dust, the need for cleaning before use, and inconvenience of the existing protective materials such as cycling masks, the present application provides a windproof and dustproof heat storage functional material and a preparation method thereof.

[0006] The object of the present application is achieved by the following technical solutions.

[0007] In a first aspect, the present application provides a windproof and dustproof heat storage functional non-woven material, comprising a windproof layer, a dustproof layer and a heat storage layer which are stacked in sequence; the windproof layer is composed of self-adhesive fibers and fine denier PET fibers; the dustproof layer is composed of 100% fine denier PP fibers; the heat storage layer is composed of heat storage fibers and regenerated cellulose fibers, and the skin side of the heat storage layer is attached with a moisturizing aid.

[0008] The present application adopts the design of windproof layer+dustproof layer+heat storage layer, wherein the windproof layer forms a dense network structure by water jet process combined with fine denier PET fibers to reduce porosity and block a certain amount of airflow and dust, and the appropriate proportion of self-adhesive fibers is added to facilitate wearing; the dustproof layer is composed of a layer of fine denier PP fiber net to block fine dust, pollen and bacteria; in addition, the heat storage layer provides the functions of heat preservation and moisture retention.

[0009] As a preferred, the proportion of self-adhesive fibers in the windproof layer is 10% to 40%, the specification of self-adhesive fibers is 1.9D-2.5D, the fiber length is 38mm to 51mm, and the balance is fine denier PET fibers.

[0010] As a preferred, the specification of fine denier PET fibers is 0.8D to 1.2D, the fiber length is 38mm to 51mm, and the fiber cross-sectional shape is trilobal or Y-shaped.

[0011] The research team found that when the fiber fineness is too low (<0.8D), it is easy to cause the material to be too dense and the air permeability to be too poor; when the fiber fineness is too high (>1.2D), the windproof effect decreases; further, the use of shaped cross-section can increase the friction resistance between fibers, reduce the direct-through nature of pores, and improve the windproof performance while maintaining a certain air permeability.

[0012] As a preferred, the specification of fine denier PP fibers in the dustproof layer is 1.2D to 1.5D, and the length is 25mm to 51mm.

[0013] As a preferred, the heat storage fibers in the heat storage layer are viscose fibers modified by fiber heat storage, which can reflect human body radiant heat and play a warm-keeping role; further, the mass of the heat storage fibers accounts for 20% to 40% of the heat storage layer, and the balance is regenerated cellulose fibers; the regenerated cellulose fibers are lyocell fibers.

[0014] As a preferred, the moisturizing aid is a compounded solution of glycerol and amino acid; wherein the mass ratio of glycerol is 5% to 15%, and the mass ratio of amino acid is 1% to 5%.

[0015] As a preferred, the mass of the fibers of the windproof layer accounts for 25% to 35% of the total mass; the mass of the fibers of the dustproof layer accounts for 30% to 40% of the total mass; and the balance is the fibers of the heat storage layer.

[0016] As preferred, far-infrared powder is added between the dustproof layer and the heat storage layer, which can ensure the consolidation effect of the additive and further improve the heat preservation performance of the material.

[0017] As preferred, the far-infrared powder is nano far-infrared powder, and the nano far-infrared powder accounts for 5%-10% of the total mass of the fiber material.

[0018] It is found through research that when the proportion of the nano far-infrared powder is less than 5%, the material has poor heat preservation effect, and when the proportion is higher than 10%, the nano far-infrared powder will remain on the surface of the fiber web, which will cause obvious roughness when the material is attached to the skin surface, and cannot meet the comfort requirement.

[0019] In the present scheme, nano far-infrared powder and moisturizing additives are combined to improve the comfort and health functions by using the heat preservation (heat locking through "greenhouse effect") and antibacterial properties of nano far-infrared powder, and to prevent skin dryness, cracking and other problems by using the moisturizing effect of glycerol and amino acids.

[0020] In a second aspect, the present application provides a preparation method of a windproof and dustproof heat storage functional non-woven material, comprising the following steps: (1) The self-adhesive fiber and fine denier PET fiber are fed in a certain proportion, opened by an opening machine, and carded into a web by a carding machine to form a windproof layer fiber web.

[0021] (2) The 100% fine denier PP fiber is opened by an opening machine, carded into a web by a carding machine to form a dustproof layer fiber web.

[0022] (3) The heat storage fiber and lyocell fiber are fed in a certain proportion, opened by an opening machine, and carded into a web by a carding machine to form a heat storage layer fiber web.

[0023] (4) Far-infrared powder is applied to the upper surface of the heat storage fiber layer by a powder spreading device, and then the dustproof layer and the windproof layer are sequentially stacked above it to form a composite fiber layer structure. (5) The composite fiber layer structure is sent into a water jet composite and reinforcement. (6) The moisturizing additive is applied to the lower surface of the heat storage layer by a sizing device, and then dried and rolled. (7) Finally, a windproof and dustproof heat storage functional non-woven fiber material is prepared.

[0024] As preferred, in step (3), the heat storage fiber is viscose fiber treated by microcapsule immersion method to have heat storage function; the heat storage fiber is obtained by immersing the fiber in a phase change microcapsule solution and then fixing the microcapsule in the internal space of the fiber by using a crosslinking agent.

[0025] As preferred, the far-infrared powder in step (4) is nano far-infrared powder.

[0026] As preferred, in step (5), the water jet process is 1#30kg, 2#50kg, 3#65kg, 4#80kg, 5#80kg, 6#85kg.

[0027] As preferred, in step (6), the sizing device adopts a spraying sizing equipment, which can make the moisturizing aid evenly adhere to the lower surface of the heat storage layer, and avoid excessive penetration into other functional layers.

[0028] Compared with the prior art, the present application has the following advantages: (1) The present application adopts a composite structure of windproof layer+dustproof layer+heat storage layer, so that the material not only has the functions of windproof and dustproof, but also has the functions of warmth preservation and moisture retention, and realizes multifunctional integration.

[0029] (2) The present application combines nano far infrared powder and moisturizing aid, uses the heat preservation (locks heat through “greenhouse effect”) and antibacterial properties of nano far infrared powder to improve comfort and health functions, and prevents water loss on the surface of the skin, and has the functions of skin moisturizing and moisture retention.

[0030] (3) The present application has the advantages of low material cost, light weight, good moisture absorption, comfort, strong resistance to small dust, clean and sanitary disposable products, and certain bacterial inhibition. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 Figure 1 is a structural schematic diagram of a windproof and dustproof heat storage functional non-woven fiber material according to an embodiment of the present application.

[0032] The figure marks are: windproof layer 1, dustproof layer 2, heat storage layer 3, nano far infrared powder 4. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0034] OVERALL EMBODIMENT A windproof and dustproof heat storage functional non-woven fiber material, as shown in Figure 1, comprises a windproof layer 1 formed by self-adhesive fibers and fine denier PET fibers being fixedly intertwined with each other, a dustproof layer 2 formed by fine denier PP fibers, a heat storage layer 3 formed by heat storage fibers and lyocell fibers, and nano far infrared powder 4 attached between the dustproof layer 2 and the heat storage layer 3. Figure 1 ​As a specific embodiment, the windproof layer is formed by mixing self-adhesive fibers with fine denier PET fibers, and then intertangling and fixing them through carding; further, the self-adhesive fiber layer accounts for 10% to 40% of the total mass of the windproof layer, and the rest is fine denier PET fiber; the dustproof layer is composed of fine denier PP fiber; the heat storage layer is composed of heat storage fiber and lyocell fiber; the mass of the heat storage fiber accounts for 20% to 40% of the mass of the heat storage layer, and the rest is lyocell fiber; further, the skin side of the heat storage layer is attached with a moisturizing aid; As a specific embodiment, the moisturizing aid is a glycerol and amino acid compound solution; the mass of glycerol accounts for 5% to 15%, and the mass of amino acid accounts for 1% to 5%; As a specific embodiment, the unit area mass of the windproof and dustproof heat storage functional non-woven fiber is 50 to 70 g / m 2 ; A preparation method of a windproof and dustproof heat storage functional non-woven fiber, comprising the following steps: (1) Put self-adhesive fibers and fine denier PET fibers according to a certain proportion, open them through an opening machine, and card them into a web through a carding machine to make a windproof layer fiber web.

[0035] (2) Put 100% fine denier PP fiber, open it through an opening machine, and card it into a web through a carding machine to make a dustproof layer fiber web.

[0036] (3) Put heat storage fiber and lyocell fiber according to a certain proportion, open them through an opening machine, and card them into a web through a carding machine to make a heat storage layer fiber web.

[0037] (4) Apply far-infrared powder to the upper surface of the heat storage fiber layer through a powder spreading device, and then stack the dustproof layer and the windproof layer on it in turn to form a composite fiber layer structure. (5) Send the composite fiber layer structure into a water jet composite and reinforcement. (6) Apply a moisturizing aid to the lower surface of the heat storage layer through a sizing device, and then dry and roll it. (7) Finally, a windproof and dustproof heat storage functional non-woven fiber material is made.

[0038] As a specific embodiment, in step (1), the proportion of self-adhesive fiber in the windproof layer is 10% to 40%, the specification of self-adhesive fiber is 1.9D-2.5D, the fiber length is 38mm to 51mm, and the rest is fine denier PET fiber; the specification of fine denier PET fiber is 0.8D to 1.2D, the fiber length is 38mm to 51mm, and the fiber cross-sectional shape is trilobal or Y-shaped special-shaped; As a specific embodiment, in step (2), the specification of fine denier PP fiber is 1.2D to 1.5D, and the length is 25mm to 51mm. As a specific embodiment, in step (3), the heat storage fiber is a modified viscose fiber, which is treated by microcapsule immersion method to have heat storage function; As a specific embodiment, in step (4), the far infrared powder is nano far infrared powder; As a specific embodiment, in step (5), the water jet process is 1#30kg, 2#50kg, 3#65kg, 4#80kg, 5#80kg, and 6#85kg; As a specific embodiment, in step (6), the sizing device uses a spraying sizing equipment, which can make the moisture aid evenly adhere to the lower surface of the heat storage layer, avoiding excessive penetration into other functional layers.

[0039] Example 1 A windproof and dustproof heat storage functional non-woven fiber material, the windproof layer is composed of 20% self-adhesive fiber layer and 80% fine denier PET fiber; wherein the self-adhesive fiber has a fineness of 2D and a length of 51mm; the fine denier PET fiber has a fineness of 1D and a length of 38mm, and the fiber cross-sectional shape is trilobal or Y-shaped; the dustproof layer is composed of 100% fine denier PP fiber, wherein the fine denier PP fiber has a fineness of 1.2D and a length of 25mm; the heat storage layer is composed of 30% viscose fiber modified by fiber heat storage and 70% lyocell fiber; the skin side of the heat storage layer is attached with a moisture aid, and the moisture aid is a glycerol and amino acid compound solution; wherein the mass fraction of glycerol is 8%, and the mass fraction of amino acid is 2%; the dustproof layer and the heat storage layer are attached with nano far infrared powder, wherein the nano far infrared powder accounts for 8% of the total mass of the fiber material; The unit area mass of the windproof and dustproof heat storage functional non-woven fiber is 60g / m 2 .

[0040] A preparation method of a windproof and dustproof heat storage functional non-woven fiber, comprising the following steps: (1) The self-adhesive fiber and the fine denier PET fiber are fed in a ratio of 2:8, opened by an opening machine, and carded into a web by a carding machine to prepare a windproof layer fiber web, and the unit area mass of the windproof layer fiber web is 18g / m 2 .

[0041] (2) 100% fine denier PP fiber is opened by an opening machine and carded into a web by a carding machine to prepare a dustproof layer fiber web, and the unit area mass of the dustproof layer fiber web is 21g / m 2 .

[0042] (3) The heat storage fiber and lyocell fiber are put into the machine according to the ratio of 3:7, opened by the opening machine, and carded into a network by the carding machine to form a heat storage layer fiber web, and the unit area mass of the heat storage layer fiber web is 21 g / m 2 .

[0043] (4) The far infrared powder is applied to the upper surface of the heat storage fiber layer by the powder application device, and then the dustproof layer and the windproof layer are stacked in sequence to form a composite fiber layer structure; (5) The composite fiber layer structure is sent into the water jet composite and reinforcement; (6) The moisture retention aid is applied to the lower surface of the heat storage layer by the sizing device, and then dried and wound; (7) Finally, a windproof and dustproof heat storage functional non-woven fiber material is prepared.

[0044] Example 2 A windproof and dustproof heat storage functional non-woven fiber material, which is different from example 1 only in that the mass of the self-adhesive fiber in the windproof layer accounts for 50% of the total mass of the windproof layer.

[0045] Example 3 A windproof and dustproof heat storage functional non-woven fiber material, which is different from example 1 only in that the mass of the heat storage fiber in the heat storage layer accounts for 10% of the total mass of the heat storage layer.

[0046] Comparative Example 1 A windproof and dustproof heat storage functional non-woven fiber material, which is different from example 1 only in that the windproof layer is composed of 100% fine denier PET fiber.

[0047] Comparative Example 2 A windproof and dustproof heat storage functional non-woven fiber material, which is different from example 1 only in that no nano far infrared powder is added.

[0048] Comparative Example 3 A windproof and dustproof heat storage functional non-woven fiber material, which is different from example 1 only in that the unit area mass of the windproof and dustproof heat storage functional non-woven fiber is 90 g / m 2 .

[0049] Test data comparison and analysis: Test purpose: Test the unit area mass, thickness, breaking strength and elongation at break, air permeability, and heat retention rate of the materials of example 1, example 2, example 3, comparative example 1, comparative example 2, and comparative example 3, respectively, and compare and analyze.

[0050] Test method: (1) Mass per unit area: tested according to GB / T 24218.1 "Textiles - Nonwoven fabrics - Test methods - Part 1: Determination of the mass per unit area"; (2) Dry thickness: tested according to GB / T 24218.2 "Textiles - Nonwoven fabrics - Test methods - Part 2: Determination of thickness"; (3) Breaking strength: tested according to GBT / 24218.3 "Textiles - Nonwoven fabrics - Test methods - Part 3: Determination of the breaking strength and elongation at break (strip method)"; (4) Thermal retention rate: tested according to GB / T 35762-2017 "Textiles - Test methods for thermal transmission performance - Flat plate method"; (5) Air permeability: tested according to GB / T 24218.15-2018 "Textiles - Nonwoven fabrics - Test methods - Part 15: Determination of air permeability".

[0051] Test comparative data: Test result analysis: (1) Comparative example 1, because the quality of the self-adhesive fiber in the windproof layer of example 2 accounts for 50% of the total mass of the windproof layer, the material thickness and air permeability values are improved to a certain extent, but the material strength decreases, and the higher the air permeability, the worse the windproof effect of the material, and the thermal retention capacity is also affected; (2) Comparative example 1, because the quality of the heat storage fiber in the heat storage layer of example 3 accounts for 10% of the total mass of the heat storage layer, the thermal retention rate of the material decreases significantly, and the thermal retention performance is affected too much; (3) Comparative example 1, the windproof layer in comparative example 1 is composed of 100% fine denier PET fiber, the windproof layer has high density, the air permeability is significantly reduced, and the air permeation effect is poor; (4) Comparative example 1, comparative example 2 does not add nano far infrared powder, and the thermal retention rate of the material decreases significantly, and the thermal retention effect is poor; (5) Comparative example 1, the unit area mass of the material in comparative example 3 is too high, the material thickness is too high, the air permeability is too low, and the air permeation effect is too poor.

[0052] The raw materials and equipment used in the present application are conventional raw materials and equipment in the art unless otherwise specified; the methods used in the present application are conventional methods in the art unless otherwise specified.

[0053] The above is only a preferred embodiment of the present application, and does not limit the present application in any way. Any simple modification, change and equivalent transformation of the above embodiment based on the technical essence of the present application still falls within the protection scope of the technical solution of the present application.

Claims

1. A windproof, dustproof and heat-storage functional nonwoven material, characterized by: It includes a windproof layer, a dustproof layer and a heat storage layer stacked in sequence; the windproof layer is composed of self-adhesive fiber and fine-denier PET fiber; the dustproof layer is composed of 100% fine-denier PP fiber; the heat storage layer is composed of heat storage fiber and regenerated cellulose fiber, and the skin-contacting surface of the heat storage layer is attached with a moisturizing additive.

2. The windproof, dustproof and heat-storage functional nonwoven material according to claim 1, characterized in that: The proportion of self-adhesive fibers in the windproof layer is 10% to 40%, the self-adhesive fiber specifications are 1.9D-2.5D, the fiber length is 38mm to 51mm, and the remainder is fine denier PET fiber; the fineness of the fine denier PET fiber specifications is 0.8D to 1.2D, the fiber length is 38mm to 51mm, and the fiber cross-section shape is trilobal or Y-shaped.

3. The windproof, dustproof and heat-storage functional nonwoven material according to claim 2, characterized in that: The fine denier PP fiber in the dustproof layer has a specification fineness of 1.2D to 1.5D and a length of 25mm to 51mm.

4. The windproof, dustproof and heat-storage functional nonwoven material according to claim 3, characterized in that: The heat storage fiber in the heat storage layer is viscose fiber that has been modified for fiber heat storage and can reflect heat radiated by the human body; the mass of the heat storage fiber accounts for 20% to 40% of the heat storage layer, and the remainder is regenerated cellulose fiber; the regenerated cellulose fiber is lyocell fiber.

5. The windproof, dustproof and heat-storage functional nonwoven material according to claim 4, characterized in that: The moisturizing aid is a compound solution of glycerol and amino acids, wherein the mass proportion of glycerol is 5% to 15%, and the mass proportion of amino acids is 1% to 5%.

6. The windproof, dustproof and heat-storage functional nonwoven material according to claim 5, characterized in that: The fiber mass of the windproof layer accounts for 25% to 35% of the total mass; the fiber mass of the dustproof layer accounts for 30% to 40% of the total mass; and the remainder is the fiber of the heat storage layer.

7. The windproof, dustproof and heat-storage functional nonwoven material according to claim 6, characterized in that: Far infrared powder is added between the dustproof layer and the heat storage layer, and the far infrared powder accounts for 5%-10% of the total mass of the fiber material.

8. The windproof, dustproof and heat-storage functional nonwoven material according to claim 7, characterized in that: The unit area mass of the windproof, dustproof, heat-storage functional non-woven material is 50 to 70 g / m 2 .

9. A method for preparing the windproof, dustproof and heat-storage functional nonwoven material according to any one of claims 1 to 8, characterized in that: The following steps are involved: (1) Self-adhesive fiber and fine-denier PET fiber are added in a certain proportion, opened by a bagging machine, and combed into a web by a carding machine to make a windproof layer fiber web; (2) 100% fine denier PP fiber is opened by a bagging machine and combed into a web by a carding machine to make a dustproof layer fiber web; (3) Heat storage fiber and lyocell fiber are added in a certain proportion, opened by a bagging machine, and combed into a web by a carding machine to make a heat storage layer fiber web; (4) applying far-infrared powder to the upper surface of the heat storage fiber layer through a powder spreading device, and then stacking the dustproof layer and the windproof layer on top of the fiber layer to form a composite fiber layer structure; (5) sending the composite fiber layer structure into hydroentanglement for compounding and reinforcement; (6) The moisturizing agent is applied to the lower surface of the heat storage layer through a sizing device, and then the finished product is obtained through drying and rolling.

10. The preparation method according to claim 9, characterized in that: In step (3), the heat storage fiber is viscose fiber treated by a microcapsule impregnation method to give it a heat storage function; the heat storage fiber is obtained by immersing the fiber in a phase change microcapsule solution through an impregnation method, and then fixing the microcapsules in the internal gaps of the fiber with a cross-linking agent, thereby obtaining a heat storage fiber.

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