CN219539705U - HEPA filter paper and high-efficiency air filter with independently disinfect efficiency - Google Patents

Abstract

The utility model provides HEPA filter paper with autonomous sterilization effect, which comprises melt-blown cloth, a nano silver fiber membrane and non-woven fabrics which are sequentially overlapped; the nano silver fiber membrane comprises a plurality of staggered nano silver composite fibers, the diameter of each nano silver composite fiber is 50-500nm, and the porosity of each nano silver fiber membrane is 85-90%. The nano silver composite fiber comprises a nano silver layer and a fiber layer, wherein the nano silver layer is loaded on the fiber layer. The nano silver is an inorganic antibacterial agent, has the advantages of good durability and antibacterial spectrum, and has a strong binding force with the fiber due to the fine fiber diameter, high porosity and large specific surface area, and the nano silver can be fixed by the fiber, so that the antibacterial effect is more durable.

Description

HEPA filter paper and high-efficiency air filter with independently disinfect efficiency

Technical Field

The utility model relates to the technical field of air purification, in particular to HEPA filter paper with self-sterilization efficiency and a high-efficiency air filter comprising the HEPA filter paper.

Background

Conventional HEPA filters consist of two parts, a meltblown layer + a scaffold layer. The melt-blown layer is a core filter layer, the material is generally PP material, and the framework layer is generally non-woven fabric. The traditional HEPA filter paper has the characteristics that air can pass through, and the fine particles with the diameter of 0.1 micron or 0.3 micron and the like can play a role in interception, so that the air is purified, but the filter paper does not contain sterilizing elements and cannot actively kill bacteria and viruses, so that bacteria in the air cannot be well purified, and the human health is protected.

In order to achieve the aim of sterilization, the existing air purification filter paper is often sprayed with a sterilizing agent on HEPA filter paper, but the aim of durable sterilization cannot be achieved due to the problems of adhesive force and saturation force.

Disclosure of Invention

In order to solve the problems that the existing air purification filter paper is often sprayed with a degerming agent on HEPA filter paper, but the persistent sterilization effect cannot be achieved due to the adhesion force and the saturation force. The utility model adopts a mode of adding a nano antibacterial high-efficiency filter membrane between the existing HEPA melt-blown layer and the framework layer to achieve the purpose of durable sterilization, and the scheme is as follows.

The utility model firstly provides HEPA filter paper with autonomous sterilization effect, which comprises melt-blown cloth, a nano silver fiber film and non-woven fabrics which are sequentially overlapped; the nano silver fiber membrane comprises a plurality of staggered nano silver composite fibers, the diameter of each nano silver composite fiber is 50-500nm, and the porosity of each nano silver fiber membrane is 85-90%. The nano silver composite fiber comprises a nano silver ion layer and a fiber layer, wherein the nano silver ion layer is arranged on the fiber layer.

As a further improvement of the HEPA filter paper with the self-sterilization effect, the fiber is made of terylene, polypropylene, chinlon or polyphenylene sulfide. The inorganic nano silver antibacterial agent can be uniformly loaded into the fiber by polymer blend spinning by using an electrostatic spinning technology, so that the nano silver fiber film with good antibacterial property is formed.

As a further improvement of the HEPA filter paper with self-sterilizing efficiency of the present utility model, the material of the meltblown cloth is polypropylene (PP).

As a further improvement of the HEPA filter paper with autonomous sterilization effect of the present utility model, the nonwoven fabric is made of Polyester (PET), polypropylene (PP) or nylon (nylon, PA).

As a further improvement of the HEPA filter paper with the self-sterilization efficiency, round holes with the diameter of 0.3-0.8 mm are uniformly distributed on the non-woven fabric, and the distance between adjacent round holes is 0.5-2 mm.

As a further improvement of the HEPA filter paper with autonomous sterilizing efficiency of the present utility model, the meltblown cloth, the nano silver fiber film, and the nonwoven fabric are fused together by hot pressing.

As a further improvement of the HEPA filter paper with autonomous sterilizing efficiency of the present utility model, the meltblown cloth, the nano silver fiber film, and the non-woven fabric are connected together by viscose.

As a further improvement of the HEPA filter paper with autonomous sterilizing efficiency of the present utility model, the thickness of the meltblown cloth is 0.5 to 2mm; the thickness of the nano silver fiber film is 0.5-2 mm; the thickness of the non-woven fabric is 0.5-2 mm.

As a further improvement of the HEPA filter paper with the self-sterilization effect, the diameter of the nano-silver composite fiber is 260-290 nm.

The utility model also proposes a high efficiency air filter comprising HEPA filter paper as described above.

The beneficial effects of the utility model are as follows: HEPA filter paper has nano silver fiber membrane layer, it has adopted nano silver to load and form nano silver composite fiber on the fibre, nano silver composite fiber stagger has formed this nano silver fiber membrane layer, nano silver has good persistence and antibiotic spectral property advantage, because the fibre diameter is thin (50-500 nm), the porosity is high (85-90%), specific surface area is big again, so nano silver and fibre cohesion are strong, nano silver can be fixed by the fibre, thus antibiotic effect is more lasting.

Drawings

Fig. 1 is a schematic structural diagram of HEPA filter paper with self-sterilizing efficacy.

Detailed Description

Embodiments of the present utility model are described below with reference to the accompanying drawings.

Referring to fig. 1, a HEPA filter paper with self-sterilizing effect includes a meltblown cloth 1, a nano silver fiber film 2 and a non-woven fabric 3 stacked in sequence. The nano silver fiber membrane 2 comprises a plurality of staggered nano silver composite fibers. The diameter of the nano silver composite fiber is 50-500nm, and the porosity of the nano silver fiber film 2 is 85-90%. The nano silver composite fiber comprises a nano silver ion layer and a fiber layer, wherein the nano silver layer is arranged on the fiber layer.

Wherein HEPA refers to a high efficiency air particulate filter.

The HEPA filter paper is provided with a nano silver fiber membrane layer 2, nano silver is loaded on the fiber layer to form nano silver composite fibers, and the nano silver composite fibers are staggered to form the nano silver fiber membrane layer 2. The nano silver layer is an inorganic antibacterial agent, has the advantages of good durability and antibacterial spectrum, and has a long-lasting antibacterial effect because the nano silver and the fiber have strong binding force because the fiber diameter is thin (50-500 nm), the porosity is high (85-90%) and the specific surface area is large, and the nano silver can be fixed by the fiber. The specific constitution of the nano silver composite fiber can be referred to Chinese patent No. CN201512612U.

Wherein the fiber can be made of terylene, polypropylene, chinlon or polyphenylene sulfide. The inorganic nano silver antibacterial agent can be uniformly loaded into the fiber by polymer blend spinning by using an electrostatic spinning technology, so that the nano silver fiber film 2 with good antibacterial performance is formed. The nano silver fiber membrane 2 is combined with the melt-blown cloth 1 to form the antibacterial composite filter membrane with high-efficiency filtering performance.

The diameter of the nano silver composite fiber is preferably 260-290 nm, and the binding force between the nano silver and the fiber is further enhanced within the diameter range.

The HEPA filter paper: the melt-blown cloth 1 can be used as a filtration starting layer, air to be filtered is introduced from the layer, and the filtered air flows out of the non-woven cloth 3 as shown in fig. 1; the nonwoven fabric 3 may be used as a filtration starting layer, and air to be filtered may be introduced from this layer, and the filtered air may flow out from the meltblown fabric 1.

The material of the melt-blown cloth 1 can be polypropylene (PP), the fiber diameter can reach 1-5 microns, the gap is more, the structure is fluffy, the crease resistance is good, and the superfine fiber with a unique capillary structure increases the number and the surface area of the fiber per unit area, so that the melt-blown cloth has good filterability, shielding property, heat insulation property and oil absorption property.

The non-woven fabric 3 mainly plays a role of framework support, and optionally, round holes with diameters of 0.3-0.8 mm can be uniformly distributed on the non-woven fabric 3, the distance between adjacent round holes is 0.5-2 mm, the air permeability is increased, and the air flow is increased.

The nonwoven fabric 3 may be made of Polyester (PET), polypropylene (PP) or nylon (nylon, PA). The polyester has high toughness, excellent setting performance, wear resistance, light resistance, corrosion resistance, strong acid and alkali resistance and ultraviolet resistance. The polypropylene has high impact resistance, strong mechanical property and resistance to corrosion of various organic solvents and acid and alkali. The nylon has good comprehensive properties including mechanical properties, heat resistance, abrasion resistance, chemical resistance and self-lubricating property, and low friction coefficient. The nylon may be flame retardant nylon with a flame retardant. The above materials can make the non-woven fabric 3 have high strength, wear resistance and long service life.

The melt-blown cloth 1, the nano silver fiber film 2 and the non-woven fabric 3 can be stacked together, can be fused together through hot pressing, and can be connected together through a viscose mode.

The thickness of the melt-blown cloth 1 is 0.5-2 mm; the thickness of the nano silver fiber film 2 is 0.5-2 mm; the thickness of the non-woven fabric 3 is 0.5-2 mm. For example, the meltblown 1 has a thickness of 1.2mm; the thickness of the nano silver fiber film 2 is 0.8mm; the thickness of the nonwoven fabric 3 was 1.1mm.

The utility model also provides a high-efficiency air filter which comprises the HEPA filter paper, and the sterilization performance of the high-efficiency air filter can be remarkably improved by applying the HEPA filter paper.

The principle of the nano silver fiber film 2 capable of sterilizing is that, please refer to the following reaction formula, because the nano silver fiber film 2 can separate silver ions, the silver ions can strongly attract sulfhydryl (-SH) on enzyme protein in a bacterial body, and can be quickly combined with the thiol (-SH) to cause the enzyme protein to lose activity and cause bacterial death.

SH-enzyme-SH+2Ag ⁺ AgS-enzyme-SAg+2H ⁺ 。

When bacteria are coated with Ag ⁺ After killing, ag ⁺ The bacteria are released from the bacterial cadaver and then contacted with other bacterial colonies, and the process is repeatedly carried out, which is also the reason for the durability of silver sterilization.

The above embodiments are merely for illustrating the technical solution of the present utility model and not for limiting the scope of the present utility model as claimed, and it is obvious to those skilled in the art that modifications or improvements may be made to the above embodiments without departing from the spirit of the present utility model.

Claims (10)

1. HEPA filter paper with independently disinfect efficiency, its characterized in that: comprises melt-blown cloth, a nano silver fiber film and non-woven fabrics which are sequentially overlapped; the nano silver fiber membrane comprises a plurality of staggered nano silver composite fibers, the diameter of the nano silver composite fibers is 50-500nm, and the porosity of the nano silver ion fiber membrane is 85-90%; the nano silver composite fiber comprises a nano silver ion layer and a fiber layer, wherein the nano silver layer is arranged on the fiber layer.

2. The HEPA filter with self-sterilizing efficacy according to claim 1, wherein: the fiber is made of terylene, polypropylene, chinlon or polyphenylene sulfide.

3. The HEPA filter with self-sterilizing efficacy according to claim 1, wherein: the material of the melt-blown cloth is polypropylene.

4. The HEPA filter with self-sterilizing efficacy according to claim 1, wherein: the non-woven fabric is made of terylene, polypropylene or chinlon.

5. The HEPA filter with self-sterilizing efficacy according to claim 1, wherein: round holes with the diameter of 0.3-0.8 mm are uniformly distributed on the non-woven fabric, and the distance between adjacent round holes is 0.5-2 mm.

6. The HEPA filter with self-sterilizing efficacy according to claim 1, wherein: the melt-blown cloth, the nano silver fiber film and the non-woven fabric are fused together through hot pressing.

7. The HEPA filter with self-sterilizing efficacy according to claim 1, wherein: the melt-blown cloth, the nano silver fiber film and the non-woven fabric are connected together through viscose.

8. The HEPA filter with self-sterilizing efficacy according to claim 1, wherein: the thickness of the melt-blown cloth is 0.5-2 mm; the thickness of the nano silver ion fiber membrane is 0.5-2 mm; the thickness of the non-woven fabric is 0.5-2 mm.

9. The HEPA filter with self-sterilizing efficacy according to claim 1, wherein: the diameter of the nano silver composite fiber is 260-290 nm.

10. A high efficiency air filter comprising a HEPA filter paper according to any one of claims 1 to 9.