CN211536869U

CN211536869U - Composite electrostatic cotton filter material

Info

Publication number: CN211536869U
Application number: CN201921846904.0U
Authority: CN
Inventors: 颜一旭
Original assignee: DONGGUAN RETOP FILTER MATERIAL CO LTD
Current assignee: DONGGUAN RETOP FILTER MATERIAL CO LTD
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-09-22
Anticipated expiration: 2029-10-30

Abstract

The utility model provides a composite electrostatic cotton filter material, which comprises a first PP non-woven fabric layer, a charged fiber cotton layer with uniform rolling points on the surface and a second PP non-woven fabric layer, wherein the top of the charged fiber cotton layer is covered with the first PP non-woven fabric layer, and the bottom of the charged fiber layer is covered with the second PP non-woven fabric layer; the charged fiber cotton layer comprises positive charge fibers and cotton fibers; the positively charged fibers and the cotton fibers are interwoven together; the application has the advantages of strong adsorption force, good filtering performance, long service life and the like.

Description

Composite electrostatic cotton filter material

Technical Field

The utility model relates to a non-woven fabrics, concretely relates to compound cotton filter media of static.

Background

The non-woven fabric in the prior art has the advantages of good tensile strength, high dust holding capacity, high weighing efficiency and the like as a filter material, but in the using process, a user finds that the classification efficiency is extremely low, namely the capture capacity of particles with a certain particle size grade is extremely low.

Therefore, it is necessary to provide a technical means to solve the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a compound static cotton filter media to there is the non-woven fabrics as the extremely low technical problem of filter media in-process hierarchical efficiency who uses among the solution prior art.

The utility model is realized in such a way, the composite electrostatic cotton filter material comprises a non-woven fabric layer and a melt-blown fiber layer, the composite electrostatic cotton filter material comprises a first PP non-woven fabric layer, an electrified fiber cotton layer and a second PP non-woven fabric layer, the first PP non-woven fabric layer covers the top of the electrified fiber cotton layer, and the second PP non-woven fabric layer covers the bottom of the electrified fiber layer; the charged fiber cotton layer comprises positive charge fibers and cotton fibers; the positively charged fibers are interwoven with the cotton fibers.

Preferably, the charged fiber cotton layer is provided with uniform nip points on the surface thereof, the nip points being 8000 per square centimeter.

Preferably, the thickness of the first PP non-woven fabric layer and the thickness of the second PP non-woven fabric layer are both 1.8 mm.

Preferably, the thickness of the layer of charged fibrous batt is 0.8 mm.

Preferably, the fiber diameter of the first PP non-woven fabric layer and the fiber diameter of the second PP non-woven fabric layer are both 2-5 μm.

The utility model discloses a technical effect of compound cotton filter media of static does:

the cotton filter media of compound static in this application passes through first PP non-woven fabrics layer, the cotton layer of charged fiber, second PP non-woven fabrics layer, coordinate each other and mutually support, not only make and produce the probability that the collision was intercepted between particulate matter and the fibre among the filtering process and promote greatly, simultaneously, wherein the cotton layer of charged fiber is after electret treatment, obtain the fibre of taking positive charge, through the mode of letting the cotton layer of charged fiber insert positive charge, let the cotton layer of charged fiber have positive charge, and because there are a lot of anions in the air, the dust that wafts in the air is in very strong anion field and has taken the negative charge, the positive charge of filter media and the negative charge of dust are because the effect of electric field, inhale mutually through coulomb's force, the cotton layer of charged fiber of this application is because the fibre has positive charge, under the unchangeable condition of filter resistance, can advance one and improve the adsorption to air particle.

Drawings

FIG. 1: the utility model discloses an overall structure schematic diagram of a composite electrostatic cotton filter material;

FIG. 2: the utility model discloses a positive charge fiber and cotton fiber enlarge the structure schematic diagram in compound static cotton filter media.

Drawing symbol

10-a first PP non-woven fabric layer, 20-a charged fiber cotton layer, 30-a second PP non-woven fabric layer, 21-positive charge fibers, 22-cotton fibers, 201-positive charge and 202-negative charge.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

Referring to fig. 1 and fig. 2, in order to provide an embodiment of the present invention, a composite electrostatic cotton filter material in the embodiment is suitable for adsorbing and filtering small floating particles in the surrounding environment, the composite electrostatic cotton filter material in the embodiment includes a first PP non-woven fabric layer 10, a charged fiber cotton layer 20, and a second PP non-woven fabric layer 30, and the following further describes the components of the composite electrostatic cotton filter material:

the top of the charged fiber cotton layer 20 is covered with a first PP non-woven fabric layer 10, and the bottom of the charged fiber layer is covered with a second PP non-woven fabric layer 30; the charged fibrous cotton layer 20 comprises positively charged fibers 21 and cotton fibers 22; positively charged fibers 21 are interwoven with cotton fibers 22.

As shown in FIG. 2, in daily life, dust floating in the air is in a strong negative ion field due to a lot of negative ions, so that negative charges 202 are carried, dust or other particles are captured by adopting a mode of carrying positive charges 201 in a charged fiber layer through electrostatic electret treatment, so that fibers of the dust or other particles are carried with positive charges 201, the positive charges 201 in the positive charges fibers 21 and the negative charges 202 of the dust are attracted by Coulomb force under the action of an electric field, and the adsorption capacity of the filter material is improved under the condition of unchanged resistance.

Further, the surface of the charged fiber cotton layer 20 is provided with uniform nip points, wherein the nip points are 8000 per square centimeter, and the nip points are formed by the penetration of a needle machine. The charged fiber cotton layer 20 is quite fluffy when fed into a needle machine, a certain strong force is generated by cohesive force between the cotton fibers 22, but the strong force is poor, when a plurality of needles penetrate the charged fiber cotton layer 20, the hooks on the needles drive the cotton fibers 22 on the surface and the sub-surface of the charged fiber cotton layer 20 to move from the plane direction of the charged fiber cotton layer 20 to the vertical direction of the charged fiber cotton layer 20, so that the cotton fibers 22 are displaced up and down, and the cotton fibers 22 which are displaced up and down generate a certain extrusion on the charged fiber cotton layer 20, so that the cotton fibers 22 in the charged fiber cotton layer 20 are close to each other and compressed, the strength of the charged fiber cotton layer 20 is improved, and the service life of the charged fiber cotton layer is prolonged.

Further, the thickness of each of the first PP nonwoven fabric layer 10 and the second PP nonwoven fabric layer 30 is 1.8 mm. The filter material is made of the first PP non-woven fabric layer 10 and the second PP non-woven fabric layer 30, and compared with a common filter material, the filter material has better flexibility, air permeability and durability.

Further, the thickness of the charged fiber cotton layer 20 was 0.8 mm.

In this embodiment, the first PP nonwoven fabric layer 10 and the second PP nonwoven fabric layer 30 are both a meltblown nonwoven material, and the meltblown nonwoven material is a superfine fiber produced by melting and stretching a polymer (in this embodiment, a PP material is preferred) by means of a high-temperature and high-speed air flow, and the superfine fibers fall on a web-forming curtain to be bonded and formed with each other.

Further, the diameter of the fibers in the first PP nonwoven fabric layer 10 and the fibers in the second PP nonwoven fabric layer 30 is 2 to 5 μm. The extremely small fiber diameter increases the surface area of the filter medium and sharply decreases the linear density, and when the surface density of the filter medium is constant, the finer the fibers, the larger the surface area of the material, the better the adsorption effect of the material, that is, the stronger the filtration effect.

It is to be noted that the formula of coulomb force in the present embodiment is F ═ K (Q1Q2)/r²Wherein: q1 and Q2 are the charge amounts of the two objects, respectively, r is the distance between the two objects (centers), and k is a constant.

The above description is only for the preferred embodiment of the present invention, and the structure is not limited to the above-mentioned shape, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a compound static cotton filter media which characterized in that: the fabric comprises a first PP non-woven fabric layer, a charged fiber cotton layer and a second PP non-woven fabric layer, wherein the first PP non-woven fabric layer covers the top of the charged fiber cotton layer, and the second PP non-woven fabric layer covers the bottom of the charged fiber cotton layer; the charged fiber cotton layer comprises positive charge fibers and cotton fibers; the positively charged fibers are interwoven with the cotton fibers.

2. The composite electrostatic cotton filter as claimed in claim 1, wherein: evenly distributed rolling points are arranged on the surface of the charged fiber cotton layer, and the rolling points are 8000 rolling points per square centimeter.

3. The composite electrostatic cotton filter as claimed in claim 1, wherein: the thickness of the first PP non-woven fabric layer and the thickness of the second PP non-woven fabric layer are both 1.8 mm.

4. The composite electrostatic cotton filter material as claimed in claim 2, wherein: the thickness of the charged fiber cotton layer is 0.8 mm.

5. The composite electrostatic cotton filter as claimed in claim 1, wherein: the fiber diameter of the first PP non-woven fabric layer and the fiber diameter of the second PP non-woven fabric layer are both 2-5 mu m.