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CN116116114A - High-dust-holding bag filter and preparation method thereof - Google Patents

High-dust-holding bag filter and preparation method thereof Download PDF

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Publication number
CN116116114A
CN116116114A CN202211471501.9A CN202211471501A CN116116114A CN 116116114 A CN116116114 A CN 116116114A CN 202211471501 A CN202211471501 A CN 202211471501A CN 116116114 A CN116116114 A CN 116116114A
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China
Prior art keywords
dust
filter
layer
holding
bag
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Pending
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CN202211471501.9A
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Chinese (zh)
Inventor
尤健明
潘少杰
曹奇
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Tongxiang Jianmin Filter Materials Co ltd
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Tongxiang Jianmin Filter Materials Co ltd
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Priority to CN202211471501.9A priority Critical patent/CN116116114A/en
Publication of CN116116114A publication Critical patent/CN116116114A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0001—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B32B5/265—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer
    • B32B5/266—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers
    • B32B5/268—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers characterised by at least one non-woven fabric layer that is a melt-blown fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B32B5/265—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer
    • B32B5/266—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers
    • B32B5/268—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers characterised by at least one non-woven fabric layer that is a melt-blown fabric
    • B32B5/269—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers characterised by at least one non-woven fabric layer that is a melt-blown fabric characterised by at least one non-woven fabric layer that is a melt-blown fabric next to a non-woven fabric layer that is a spunbonded fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2170/00—Construction of flexible containers
    • B31B2170/20—Construction of flexible containers having multi-layered walls, e.g. laminated or lined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2241/00—Making bags or boxes intended for a specific use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention provides a high-dust-holding bagA high dust-holding filter material used for the high dust-holding bag filter is composed of a dust-holding layer, a filter layer and a protective layer which are sequentially arranged, wherein the dust-holding layer is made of hot air fiber material or melt blown fiber material, and the weight of Rong Chenceng g is 40-120g/m 2 The filter layer is made of melt-blown fiber materials, the protective layer is made of spun-bonded non-woven fabrics, and the gram weight of the protective layer is 15-25 g/square meter. The high dust-holding filter material used by the bag filter has the characteristic of high dust holding capacity, and can solve the problems of poor damage resistance, high wind resistance, high landfill cost after use and low dust holding capacity of the filter material used by the common bag filter. The invention can improve the service life of the bag filter and meet the requirement on the service life of the bag filter.

Description

High-dust-holding bag filter and preparation method thereof
Technical Field
The invention belongs to the technical field of air filtering materials, and particularly relates to a high-dust-holding bag filter and a preparation method thereof.
Background
In recent years, as the air environment deteriorates, the demand for air conditioning filter systems for civil buildings and clean rooms has increased. As the amount of large particle dust in the air increases, the dust holding capacity of the filter becomes particularly important.
The glass fiber bag filter is widely used at present, has the advantages of corrosion resistance, flame resistance, insulation and the like, but has the problems of poor damage resistance, high wind resistance, high landfill cost after use and the like.
Currently, most conventional bag filters are used, the structural composition of which comprises: hot air cotton, bicomponent melt blown fibers and spunbonded fabrics. The automatic suture is realized through ultrasonic equipment, and the device has the characteristics of high strength and low resistance. But the dust holding capacity of the whole bag filter is not high due to insufficient bulk of the meltblown fibers.
Disclosure of Invention
The invention aims to solve the following technical problems: the bag filter is made of glass fiber materials, so that the damage resistance is poor, the wind resistance is high, and the landfill cost is high after the bag filter is used; the bag filter adopts hot air cotton, bicomponent melt-blown fiber and spun-bonded cloth material, has low dust holding capacity, and provides a high dust holding bag filter and a preparation method thereof.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a high-dust-holding bag filter is made of high-dust-holding filter material by bag making machine, the Gao Rongchen filter material is composed of dust-holding layer, filter layer and protective layer, which are set up in turn, the dust-holding layer adopts special coarse melt-blown fibre material, rong ChencengGram weight of 40-120g/m 2 The filter layer is made of melt-blown fiber materials, the protective layer is made of spun-bonded non-woven fabrics, and the gram weight of the protective layer is 15-25 g/square meter.
The preparation method of the high-capacity dust bag filter comprises the following steps:
s1, respectively preparing a dust containing layer, a filter layer and a protective layer: the dust-containing layer is prepared by a hot air process or a melt blowing process, and the gram weight of the obtained hot air fiber material or melt blown fiber material of the dust-containing layer is 40-120g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The filter layer is prepared by adopting a melt-blowing process, and the obtained filter layer melt-blown fiber is obtained.
S2, compounding the dust containing layer, the filter layer and the protective layer to obtain the high dust containing filter material.
In step 2, a bag making machine is used for compounding the dust containing layer, the filter layer and the protective layer to obtain a finished product of the high dust containing bag filter, wherein the dust containing layer is outside the inner protective layer.
In step 2, the bag filter bag comprises two layers of bag bodies, each layer of bag body comprises a dust containing layer, a filter layer and a protective layer, a spun-bonded strip is arranged between the two layers of bag bodies, the gram weight of the spun-bonded strip is 20-40 g/square meter, and a bag making machine is used for compounding the two layers of bag bodies and the dust containing layers, the filter layers and the protective layers of the two layers of bag bodies to obtain a high dust containing bag filter finished product.
As a preferable technical scheme, in the step 1, the gram weight of the obtained dust-holding layer hot air fiber material or melt blown fiber material is 20-100g/m 2 。
After the technical scheme is adopted, the invention has the following advantages:
the high dust-holding filter material used by the bag filter has the advantages that the dust-holding layer adopts polypropylene fibers with wide wire diameter distribution, the gradient filtering effect is achieved, the dust-holding performance is high, and meanwhile, the filter material has certain filtering efficiency;
the filter layer adopts melt-blown fiber materials, the melt-blown fiber materials are randomly distributed and bonded together by polypropylene ultrafine fibers, and the random distribution of the fibers provides more heat bonding opportunities among the fibers, so that the melt-blown fiber materials have the characteristics of larger specific surface area, higher porosity, low resistance and high efficiency, play a main role in filtration, have no special limitation on the resistance of the melt-blown layer, and can be matched according to different bag material grades; the protective layer adopts spun-bonded non-woven fabrics, is mainly damaged in the processing or using process of the outer protective filter layer, and has high wear resistance and high tensile strength.
In conclusion, the high dust holding filter material used by the bag filter has the characteristic of high dust holding, and can solve the problems of poor damage resistance, high wind resistance, high landfill cost after use and low dust holding of the filter material used by the common bag filter. The invention can improve the service life of the bag filter and meet the requirement on the service life of the bag filter.
Drawings
FIG. 1 is a schematic view of a high dust holding capacity filter material for use in a bag filter;
FIG. 2 is a graph showing the wire diameter distribution of the dust-holding layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Examples:
as shown in figure 1, the high dust-holding bag filter is manufactured by using a high dust-holding filter material through a bag making machine, wherein the Gao Rongchen filter material is formed by compounding a dust-holding layer 1, a filter layer 2 and a protective layer 3 which are sequentially arranged, the dust-holding layer 1 is made of special melt-blown fiber materials, and the gram weight of the dust-holding layer 1 is 40-120g/m 2 The filter layer 2 is made of PP melt-blown fiber material, the protective layer 3 is made of PP spun-bonded non-woven fabric, and the gram weight of the protective layer 3 is 15-25 g/square meter.
The preparation method of the Gao Rongchen bag filter comprises the following steps:
s1, preparing a dust containing layer 1, a filter layer 2 and a protective layer 3 respectively: the dust-holding layer 1 was prepared by a special melt-blowing process, and the melt-blown fiber material of the dust-holding layer 1 obtained in this example had a gram weight of 40 to 120g/m 2 Obtaining a dust containing layer 1; the filter layer 2 is prepared by adopting a melt-blowing process, so that a melt-blown fiber material of the filter layer 2 is obtained; the protective layer 3 is prepared by a spunbonding method;
s2, compounding the dust containing layer 1, the filter layer 2 and the protective layer 3 at one time by using a bag making machine to obtain a high dust containing bag type filter finished product.
The distribution of the filament diameters of the dust-holding layer 1 is shown in fig. 2.
In another embodiment, the bag filter adopts two layers of bag bodies, each layer of bag body comprises a dust containing layer 1, a filter layer 2 and a protective layer 3, the dust containing layer 1 is arranged outside the inner protective layer 3, a spun-bonded strip is arranged between the two layers of bag bodies, the gram weight of the spun-bonded strip is 20-40 g/square meter, and a bag making machine is used for compounding the dust containing layer 1, the filter layer 2 and the protective layer 3 of the two layers of bag bodies and the two layers of bag bodies to obtain a finished product of the high-dust containing filter material.
Comparative example:
the difference from the examples is that: the comparative example is prepared by compounding a filter layer made of hot air cotton and melt blown fiber materials and a protective layer made of a spun-bonding method at one time, and the filter layer and the protective layer of the comparative example are the same as the examples.
Filter performance analysis of the bag filters of examples and comparative examples was performed as follows:
TABLE 1 filtration Performance of high dust bag Filter
Figure DEST_PATH_IMAGE001
TABLE 2 filtration performance of hot air bag filters
Figure 685842DEST_PATH_IMAGE002
From tables 1 and 2, it can be obtained that: compared with the hot air bag filter, the high-dust-holding bag filter has the advantages that the dust holding capacity and the material dust collection rate are obviously improved, and the filtering performance is better.
In addition to the above preferred embodiments, the present invention has other embodiments, and various changes and modifications may be made by those skilled in the art without departing from the spirit of the invention, which is defined in the appended claims.

Claims (6)

1. A high-dust-holding bag filter is made of high-dust-holding filter material by bag making machine, and is characterized in that the Gao Rongchen filter material is composed of a dust-holding layer, a filter layer and a protective layer which are sequentially arranged, the dust-holding layer is made of special coarse melt-blown fiber material, and Rong Chenceng g weight is 40-120g/m 2 The filter layer is made of melt-blown fiber materials, the protective layer is made of spun-bonded non-woven fabrics, and the gram weight of the protective layer is 15-25 g/square meter.
2. The preparation method of the high-dust-holding bag filter is characterized by comprising the following steps of:
s1, respectively preparing a dust containing layer, a filter layer and a protective layer: the dust-containing layer is prepared by a hot air process or a melt blowing process, and the gram weight of the obtained hot air fiber material or melt blown fiber material of the dust-containing layer is 40-120g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The filter layer is prepared by adopting a melt-blowing process, and the obtained filter layer melt-blown fiber is obtained.
And 3, S2, compounding the dust containing layer, the filter layer and the protective layer to obtain the high dust containing filter material.
4. The method for preparing the high-dust-holding bag filter according to claim 2, wherein in the step 2, a bag making machine is used for compounding the dust-holding layer, the filter layer and the protective layer to obtain a finished product of the high-dust-holding bag filter, and the dust-holding layer is arranged outside the inner protective layer.
5. The method for preparing the high-dust-holding bag filter according to claim 3, wherein in the step 2, the filter bag of the bag filter comprises two layers of bag bodies, each layer of bag body comprises a dust-holding layer, a filter layer and a protective layer, a spun-bonded strip is arranged between the two layers of bag bodies, the gram weight of the spun-bonded strip is 20-40 g/square meter, and a bag making machine is used for compounding the two layers of bag bodies and the dust-holding layers, the filter layers and the protective layers of the two layers of bag bodies to obtain the high-dust-holding bag filter finished product.
6. High dust holding capacity for use with a bag filter as defined in claim 2A process for producing a filter material, characterized in that in step 1, the specific coarse melt-blown fiber material obtained has a grammage of 20 to 100g/m 2 。
CN202211471501.9A 2022-11-23 2022-11-23 High-dust-holding bag filter and preparation method thereof Pending CN116116114A (en)

Priority Applications (1)

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Publication Number Publication Date
CN116116114A true CN116116114A (en) 2023-05-16

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