Waterproof warm-keeping non-woven fabric

Abstract

The invention relates to the technical field of non-woven fabrics, and discloses a waterproof warm-keeping non-woven fabric, which comprises a base layer non-woven fabric, an energy collection layer is embedded in the base layer non-woven fabric, a self-healing barrier layer is arranged above the base layer non-woven fabric, a waterproof breathable film is arranged above the self-healing barrier layer, and the waterproof breathable film is arranged above the self-healing barrier layer. And a warm-keeping filling layer is arranged above the waterproof breathable film. According to the waterproof warm-keeping non-woven fabric, the waterproof breathable film can effectively prevent liquid water such as rainwater and snow water from invading through unique material composition and structural design, the self-healing blocking layer can prevent water from permeating from damaged positions, the long-term effectiveness of the waterproof breathable film is maintained, and hollow polyester fibers and natural down feather in the warm-keeping filling layer are mixed for use, so that the waterproof warm-keeping non-woven fabric has a good waterproof and warm-keeping effect. The microporous structure of the waterproof breathable film ensures good breathability, so that water vapor emitted by a human body can be discharged in time, and the effects of improving the protection, heat preservation and breathability of the non-woven fabric can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of non-woven fabrics, in particular to a waterproof and warm non-woven fabric. Background Art

[0002] As an important non-woven material, non-woven fabric has been widely used in many fields due to its unique production process, which is to directly use polymer chips, short fibers or filaments, form a web through airflow or machinery, and then reinforce it through water spunlace, needle punching, hot rolling, etc., and complete the post-processing.

[0003] In some specific usage scenarios, such as outdoor clothing and winter thermal insulation products, there are high requirements for the waterproof and thermal insulation properties of non-woven fabrics. Traditional non-woven fabrics are often difficult to meet both good waterproof and thermal insulation properties. Ordinary waterproof treatment may affect the breathability of non-woven fabrics, resulting in uncomfortable wearing, while simply pursuing a thermal insulation effect is difficult to effectively prevent the intrusion of moisture. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the existing technology, the present invention provides a waterproof and thermal non-woven fabric, which has the advantages of improving the protective, thermal, and breathable properties of the non-woven fabric, and solves the problems mentioned in the above background technology.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a waterproof and thermal non-woven fabric, comprising a base non-woven fabric, an energy collection layer embedded in the base non-woven fabric, a self-healing barrier layer arranged above the base non-woven fabric, a waterproof and breathable membrane arranged above the self-healing barrier layer, and a thermal insulation filling layer arranged above the waterproof and breathable membrane.

[0008] Preferably, an intelligent temperature regulating microcapsule layer is embedded in the thermal insulation filling layer.

[0009] Preferably, a fragrance sustained-release layer is provided on the side of the base non-woven fabric close to the user's skin.

[0010] Preferably, a humidity regulating layer is provided between the waterproof breathable membrane and the thermal insulation filling layer.

[0011] Preferably, an antistatic layer is provided on the outer surface of the waterproof breathable membrane.

[0012] Preferably, an ultraviolet protection layer is provided above the waterproof and breathable membrane.

[0013] Compared with the prior art, the present invention provides a waterproof and warm non-woven fabric with the following beneficial effects:

[0014] This waterproof and thermal non-woven fabric, through its unique material composition and structural design, the waterproof and breathable membrane can effectively block the intrusion of liquid water such as rainwater and snow water. The self-healing barrier layer can prevent moisture from penetrating from the damaged area, maintaining the long-term effectiveness of the waterproof and breathable membrane. The mixed use of hollow polyester fiber and natural down in the thermal filling layer fully utilizes the thermal insulation advantages of both. The microporous structure of the waterproof and breathable membrane ensures good breathability, so that the water vapor emitted by the human body can be discharged in time, thereby achieving the effect of improving the protective, thermal insulation and breathability of the non-woven fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the front cross-sectional structure of the present invention.

[0016] Among them: 1. Base non-woven fabric; 2. Energy collection layer; 3. Self-healing barrier layer; 4. Waterproof and breathable membrane; 5. Thermal filling layer; 6. Intelligent temperature regulation microcapsule layer; 7. Fragrance sustained release layer; 8. Humidity regulation layer; 9. Antistatic layer; 10. UV protection layer. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1, a waterproof and warm non-woven fabric, comprising a base non-woven fabric 1, an energy collection layer 2 embedded in the base non-woven fabric 1, a self-healing barrier layer 3 is arranged on the top of the base non-woven fabric 1, a waterproof and breathable membrane 4 is arranged on the top of the self-healing barrier layer 3, and a thermal insulation filling layer 5 is arranged on the top of the waterproof and breathable membrane 4. The base non-woven fabric 1 is made of high-strength polyester fiber, which gives it good mechanical properties and flexibility. It plays a basic supporting role in the entire non-woven fabric structure and provides a solid support for other parts. The energy collection layer 2 is composed of a flexible piezoelectric material, such as polyvinylidene fluoride (PVDF) piezoelectric film, which is tightly combined with the base non-woven fabric 1 through a special process. When the non-woven fabric is subjected to external mechanical force, such as stretching and squeezing during human movement, the piezoelectric film will produce a piezoelectric effect, converting mechanical energy into electrical energy. The collected electrical energy can be stored in a small energy storage device to power small sensors, heating elements, etc. in wearable devices. The self-healing barrier layer 3 is composed of a polymer material containing dynamic covalent bonds, such as The polyurethane containing disulfide bonds, when the waterproof breathable membrane 4 is slightly damaged, the dynamic covalent bonds at the damaged area will undergo a reversible reaction under certain conditions (such as temperature and humidity changes), reconnecting the broken molecular chains, achieving a self-healing function, preventing moisture from penetrating the damaged area, and maintaining the long-term effectiveness of the waterproof breathable membrane 4. The waterproof breathable membrane 4 is made of polytetrafluoroethylene (PTFE), which has an extremely fine microporous structure. These micropores are like countless tiny valves, which can effectively block the intrusion of liquid water while allowing water vapor to pass smoothly, thereby achieving waterproof and breathable functions, ensuring that it is both waterproof and warm during use. The thermal filling layer 5 is made of a mixture of hollow polyester fibers and natural down. The hollow polyester fibers have a hollow ratio of 30%-50%. The hollow structure can trap air and form a warm space. The natural down is made of high-quality goose down with a down content of more than 90%, which has a high fluffiness. The combination of the two further enhances the warmth effect, just like wrapping the user in a warm "air blanket".

[0019] Specifically, such as Figure 1 As shown, the thermal insulation filling layer 5 is embedded with an intelligent temperature regulating microcapsule layer 6.

[0020] Through the above technical solution, a temperature-responsive phase change material is encapsulated inside the microcapsule, and the surface of the microcapsule is modified with a polymer chain that is sensitive to the ambient temperature. When the ambient temperature changes, the conformation of the polymer chain on the surface of the microcapsule changes, thereby regulating the heat exchange rate between the phase change material and the external environment. When the temperature drops rapidly, the polymer chain on the surface of the microcapsule shrinks, promoting the phase change material to release heat. When the temperature rises, the polymer chain stretches, slowing down the speed at which the phase change material absorbs heat, thereby achieving more precise and intelligent temperature regulation and improving the comfort and adaptability of the thermal insulation filling layer 5.

[0021] Specifically, such as Figure 1As shown, a fragrance slow-release layer 7 is provided on the side of the base nonwoven fabric 1 close to the user's skin.

[0022] Through the above technical solution, this layer is made by evenly mixing microcapsules containing natural plant essential oils into a skin-friendly polyurethane elastomer material. The wall material of the microcapsules is made of biodegradable materials, such as gelatin. When the non-woven fabric comes into contact with and rubs against human skin, the microcapsules gradually break, releasing the plant essential oils inside and emitting a pleasant fragrance. This fragrance sustained-release layer 7 brings a pleasant sensory experience to the user, and at the same time can cover up the odor caused by human sweating, thereby improving the overall quality of the product.

[0023] Specifically, such as Figure 1 As shown, a humidity regulating layer 8 is provided between the waterproof breathable membrane 4 and the thermal insulation filling layer 5 .

[0024] Through the above technical solution, this layer is mainly composed of water-absorbent resin and breathable fabric. The water-absorbent resin is made of highly absorbent sodium polyacrylate, which can absorb hundreds of times its own weight in water. When the human body sweats or the ambient humidity increases, the water-absorbent resin quickly absorbs water to prevent water from accumulating in the thermal insulation filling layer 5 and affecting the thermal insulation effect. The breathable fabric uses nylon mesh cloth with good air permeability to ensure that the absorbed water can slowly dissipate to the outside through its pores to maintain internal humidity balance.

[0025] Specifically, such as Figure 1 As shown, the outer surface of the waterproof breathable membrane 4 is provided with an antistatic layer 9.

[0026] Through the above technical solution, the antistatic layer 9 is prepared by a composite of a conductive polymer and an inorganic conductive filler. The conductive polymer is polythiophene, and the inorganic conductive filler is nano-scale carbon black. The polythiophene and carbon black are evenly mixed by a solution blending method, and then coated on the surface of the waterproof and breathable membrane 4 to form an antistatic layer 9. When the non-woven fabric generates static electricity by friction with external objects during use, the conductive components in the antistatic layer 9 can quickly conduct and dissipate the static electricity to prevent static electricity accumulation. This not only avoids the impact of static electricity adsorption on the appearance and performance of the product, but also improves the safety of use.

[0027] Specifically, such as Figure 1 As shown, an ultraviolet protection layer 10 is provided above the waterproof and breathable membrane 4 .

[0028] Through the above technical solution, the ultraviolet protection layer 10 is composed of a transparent coating material containing an ultraviolet absorber and a reflector. The ultraviolet absorber is a benzophenone compound that can effectively absorb the UV-A and UV-B bands in ultraviolet rays. The reflector is nano-titanium dioxide and zinc oxide, which can reflect ultraviolet rays and reduce the damage of ultraviolet rays to human skin. These components are evenly dispersed in a transparent acrylic polymer and then coated on the surface of the waterproof and breathable membrane 4 to form the ultraviolet protection layer 10. When used outdoors, this layer can block most of the ultraviolet rays and protect the user's skin from ultraviolet radiation without affecting the waterproof and breathable properties of the waterproof and breathable membrane 4.

[0029] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof and warm non-woven fabric, comprising a base non-woven fabric (1), characterized in that: An energy collection layer (2) is embedded in the base non-woven fabric (1), a self-healing barrier layer (3) is provided above the base non-woven fabric (1), a waterproof breathable membrane (4) is provided above the self-healing barrier layer (3), and a thermal insulation filling layer (5) is provided above the waterproof breathable membrane (4).

2. The waterproof and warm non-woven fabric according to claim 1, characterized in that: An intelligent temperature regulating microcapsule layer (6) is embedded in the thermal insulation filling layer (5).

3. The waterproof and warm non-woven fabric according to claim 1, characterized in that: The base non-woven fabric (1) is provided with a fragrance slow-release layer (7) on the side close to the user's skin.

4. The waterproof and warm nonwoven fabric according to claim 1, characterized in that: A humidity regulating layer (8) is provided between the waterproof breathable membrane (4) and the thermal insulation filling layer (5).

5. The waterproof and warm non-woven fabric according to claim 1, characterized in that: The outer surface of the waterproof and breathable membrane (4) is provided with an antistatic layer (9).

6. The waterproof and warm nonwoven fabric according to claim 1, characterized in that: An ultraviolet protection layer (10) is provided above the waterproof and breathable membrane (4).

Images