CN112726288A - Air filter paper and production process thereof - Google Patents
Air filter paper and production process thereof Download PDFInfo
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- CN112726288A CN112726288A CN202110124527.5A CN202110124527A CN112726288A CN 112726288 A CN112726288 A CN 112726288A CN 202110124527 A CN202110124527 A CN 202110124527A CN 112726288 A CN112726288 A CN 112726288A
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- 238000004519 manufacturing process Methods 0.000 title abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 57
- 239000002270 dispersing agent Substances 0.000 claims abstract description 35
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 32
- 239000003365 glass fiber Substances 0.000 claims abstract description 32
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000002087 whitening effect Effects 0.000 claims abstract description 22
- 229920006221 acetate fiber Polymers 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000004537 pulping Methods 0.000 claims description 36
- 238000003756 stirring Methods 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 26
- 238000010009 beating Methods 0.000 claims description 24
- 229920000742 Cotton Polymers 0.000 claims description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 12
- 230000007480 spreading Effects 0.000 claims description 12
- 238000003892 spreading Methods 0.000 claims description 12
- 238000004078 waterproofing Methods 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 6
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 229940037312 stearamide Drugs 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 238000001914 filtration Methods 0.000 description 12
- 239000007844 bleaching agent Substances 0.000 description 5
- 238000013329 compounding Methods 0.000 description 5
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- 230000002940 repellent Effects 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Images
Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/08—Filter paper
-
- 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
- B01D39/18—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being cellulose or derivatives thereof
-
- 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
- B32B29/00—Layered products comprising a layer of paper or cardboard
-
- 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
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
-
- 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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
- B32B37/1009—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure using vacuum and fluid 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
- B32B38/00—Ancillary operations in connection with laminating processes
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- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/164—Drying
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/02—Synthetic cellulose fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
- D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/08—Dispersing agents for fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/12—Defoamers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/30—Luminescent or fluorescent substances, e.g. for optical bleaching
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
-
- 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
- B32B2250/26—All layers being made of paper or paperboard
-
- 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
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/582—Tearability
- B32B2307/5825—Tear resistant
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- 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
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- 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
- B32B2317/00—Animal or vegetable based
- B32B2317/12—Paper, e.g. cardboard
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses air filter paper and a production process thereof, and the air filter paper comprises a high-tightness layer, a framework layer and a low-tightness layer, wherein the high-tightness layer consists of glass fibers, acetate fibers, a defoaming agent, a dispersing agent, a waterproof agent and a whitening agent, the low-tightness layer consists of glass fibers, linter pulp, a defoaming agent, a dispersing agent, a waterproof agent and an anti-knocking agent, the framework layer consists of aluminum wires, and the framework layer is arranged between the high-tightness layer and the low-tightness layer and is integrally formed through a vacuum process and a drying process.
Description
Technical Field
The invention relates to the technical field of air filter paper, in particular to air filter paper and a production process thereof.
Background
Air filter paper is a key component in air cleaners and determines the performance of the air filter. The air filter paper generally comprises a paper filter layer which is made of common wood pulp as a main component, the common wood pulp fiber is fine and has high tightness, so that the manufactured air filter paper generally has the defects of high tightness, low filtering efficiency, short service life and the like, and meanwhile, along with the increase of the service time, because the filtered and adsorbed particles are increased, the air flow is reduced, even the wind power borne by the air filter paper is increased, and the air filter paper used in equipment with small volume and large flow can even be locally broken so as to lose the filtering effect.
Therefore, the air filter paper and the production process thereof are designed, wherein the air filter paper has better rigidity, longer service life and low tightness, and the multiple layers of filter paper are compounded and staggered for filtering, so that the air flow is improved, and the filtering efficiency is improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the air filter paper and the production process thereof, and the air filter paper has the functions of better rigidity, longer service life, compounding and staggered filtering of multiple layers of filter paper with low tightness, and improving the air flow rate so as to improve the filtering efficiency.
The technical scheme adopted by the invention for solving the technical problems is as follows: the air filter paper comprises a high-tightness layer, a framework layer and a low-tightness layer, wherein the high-tightness layer is composed of glass fibers, acetate fibers, defoaming agents, dispersing agents, waterproofing agents and brightening agents, the low-tightness layer is composed of glass fibers, cotton linter pulp, defoaming agents, dispersing agents, waterproofing agents and reinforcing agents, the framework layer is composed of aluminum wires, and the framework layer is arranged between the high-tightness layer and the low-tightness layer and is integrally formed through a vacuum process and a drying process.
Further, the high-tightness layer comprises, by mass, 45-48% of glass fibers, 42-50% of acetate fibers, 1.5-3% of defoaming agents, 1.5-3% of dispersing agents, 0.8-4% of waterproofing agents and 0.8-4% of whitening agents.
Furthermore, the low-tightness layer comprises 55-58% of glass fiber, 35-40% of cotton linter pulp, 1.5-3% of defoaming agent, 1.5-3% of dispersing agent, 0.8-4% of waterproof agent and 0.8-4% of whitening agent by mass percentage.
Furthermore, the diameter of the aluminum wire with the density of the framework layer is 0.03-0.05 mm.
Furthermore, the projection of the aluminum wires used for paving the framework layer in the same horizontal plane occupies 0.5-1% of the unit area.
A production process of air filter paper comprises the following steps:
(1) mixing silk glass fiber and acetate fiber, pulping until the concentration of the pulp is 2.0-2.4wt%, pulping until the beating degree of the pulp is 12.5-13 DEG SR, and then pulping until the beating degree is 17-19 DEG SR;
(2) adding a defoaming agent, a dispersing agent, a waterproof agent and a whitening agent into the material obtained in the last step, uniformly stirring, and continuously stirring to 1.6-1.85 wt%;
(3) carrying out net-surfing papermaking molding on the material obtained in the last step to obtain high-tightness laminated paper;
(4) adding 10% NaOH into the cotton linter pulp, stirring for 5h, and removing wax and soluble impurities in the cotton linter;
(5) mixing the cotton linter pulp obtained in the last step with glass fiber, pulping until the pulp concentration is 2.6-2.9%, pulping until the pulp beating degree is 15-17 DEG SR, and then pulping until the beating degree is 27-29 DEG SR;
(6) adding a defoaming agent, a dispersing agent, a waterproof agent and a whitening agent into the material obtained in the last step, uniformly stirring, and continuously stirring to 1.3-1.7 wt%;
(7) carrying out net-surfing papermaking molding on the material obtained in the last step to obtain low-tightness laminated paper;
(8) spreading the low-tightness layer blank paper, uniformly spreading aluminum wires used by the framework layer on the low-tightness layer blank paper, covering the high-tightness layer blank paper on the framework layer, and attaching the high-tightness layer blank paper and the low-tightness layer blank paper;
(9) and then the attached filter paper is prepared after vacuumizing, squeezing and drying.
Furthermore, the plane of the framework layer can be filled with resin, and the high-progress laminated paper and the low-tightness laminated paper are filled with resin and aluminum wires.
Further, the dispersing agent is vinyl bis stearamide.
Further, the thickness of the high-tightness layer is 0.2-0.22 mm.
Further, the thickness of the low-tightness layer is 0.10-0.15 mm.
The invention has the beneficial effects that:
1. the invention adopts a multilayer composite structure, the original filter paper with single mechanism and high tightness is converted into the filter paper with different tightness for compounding, the middle part is supplemented with metal wires with small diameter as a framework material, the integral rigidity of the filter paper is enhanced, the filter paper is not easy to deform and cannot be easily torn due to external force, and the functions of better rigidity, longer service life, compounding of multiple layers of filter paper with low tightness, staggered filtration and improvement of air flow and filtration efficiency are realized.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Description of reference numerals: 1-a high-tightness layer; 2-a framework layer; 3-low tightness layer.
Detailed Description
The invention will now be further illustrated by reference to specific examples, which are intended to be illustrative only and not to limit the scope of the invention. Further, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents may fall within the scope of the invention as defined in the appended claims.
Referring to fig. 1, which is a schematic structural diagram of the present invention, the air filter paper comprises a high-tightness layer 1, a framework layer 2 and a low-tightness layer 3, wherein the high-tightness layer 1 is composed of glass fibers, acetate fibers, an antifoaming agent, a dispersant, a waterproof agent and a whitening agent, the low-tightness layer 3 is composed of glass fibers, linter pulp, an antifoaming agent, a dispersant, a waterproof agent and a reinforcing agent, the framework layer 2 is composed of aluminum wires, and the framework layer 2 is arranged between the high-tightness layer 1 and the low-tightness layer 3 and is integrally formed through a vacuum process and a drying process.
The high-tightness layer 1 comprises, by mass, 45-48% of glass fibers, 42-50% of acetate fibers, 1.5-3% of a defoaming agent, 1.5-3% of a dispersing agent, 0.8-4% of a water-proofing agent and 0.8-4% of a whitening agent.
The low-tightness layer 3 comprises 55-58% of glass fiber, 35-40% of linter pulp, 1.5-3% of defoaming agent, 1.5-3% of dispersing agent, 0.8-4% of waterproof agent and 0.8-4% of whitening agent by mass percent.
The diameter of the aluminum wire with the density of the framework layer 2 is 0.03 mm-0.05 mm, and the projection of the aluminum wire used for paving the framework layer 2 in the same horizontal plane occupies 0.5% -1% of the unit area.
A production process of air filter paper comprises the following steps:
(1) mixing silk glass fiber and acetate fiber, pulping until the concentration of the pulp is 2.0-2.4wt%, pulping until the beating degree of the pulp is 12.5-13 DEG SR, and then pulping until the beating degree is 17-19 DEG SR;
(2) adding a defoaming agent, a dispersing agent, a waterproof agent and a whitening agent into the material obtained in the last step, uniformly stirring, and continuously stirring to 1.6-1.85 wt%;
(3) carrying out net-surfing papermaking molding on the material obtained in the last step to obtain high-tightness layer 1 blank paper;
(4) adding 10% NaOH into the cotton linter pulp, stirring for 5h, and removing wax and soluble impurities in the cotton linter;
(5) mixing the cotton linter pulp obtained in the last step with glass fiber, pulping until the pulp concentration is 2.6-2.9%, pulping until the pulp beating degree is 15-17 DEG SR, and then pulping until the beating degree is 27-29 DEG SR;
(6) adding a defoaming agent, a dispersing agent, a waterproof agent and a whitening agent into the material obtained in the last step, uniformly stirring, and continuously stirring to 1.3-1.7 wt%;
(7) carrying out net-surfing papermaking molding on the material obtained in the last step to obtain 3 blanks of the low-tightness layer;
(8) spreading the blank paper of the low-tightness layer 3, uniformly spreading aluminum wires used by the framework layer 2 on the blank paper of the low-tightness layer 3, covering the blank paper of the high-tightness layer 1 on the framework layer 2, and attaching the blank paper of the high-tightness layer 1 and the blank paper of the low-tightness layer 3;
(9) and then the attached filter paper is prepared after vacuumizing, squeezing and drying.
The plane of the framework layer 2 can be filled with resin, and the space between the high-progress layer paper and the low-tightness layer 3 paper is filled with resin and aluminum wires.
The dispersant is vinyl bis stearamide, the thickness of the high-tightness layer 1 is 0.2-0.22mm, and the thickness of the low-tightness layer 3 is 0.10-0.15 mm.
The first embodiment is as follows:
the air filter paper comprises a high-tightness layer 1, a low-tightness layer 3 and a high-tightness layer 1, wherein the thickness of the high-tightness layer 1 is 0.2mm, the thickness of the low-tightness layer 3 is 0.10mm, the high-tightness layer 1 comprises 45% of glass fibers, 42% of acetate fibers, 1.5% of defoaming agents, 1.5% of dispersing agents, 0.8% of waterproof agents and 0.8% of whitening agents, the low-tightness layer 3 comprises 55% of glass fibers, 35% of linter pulp, 1.5% of defoaming agents, 1.5% of dispersing agents, 0.8% of waterproof agents and 0.8% of whitening agents in percentage by mass, the diameter of aluminum wires with the density of a framework layer 2 is 0.03mm, and the projection of the aluminum wires used for laying the framework layer 2 in the same horizontal plane occupies 0.5% of a unit.
A production process of air filter paper comprises the following steps:
(1) mixing silk glass fiber and acetate fiber, pulping until the concentration of the pulp is 2.0wt%, pulping until the beating degree of the pulp is 12.7 DEG SR, and then pulping until the beating degree is 17.5 DEG SR;
(2) adding a defoaming agent, a dispersing agent, a waterproof agent and a whitening agent into the material obtained in the last step, uniformly stirring, and continuously stirring to 1.7 wt%;
(3) carrying out net-surfing papermaking molding on the material obtained in the last step to obtain high-tightness layer 1 blank paper;
(4) adding 10% NaOH into the cotton linter pulp, stirring for 5h, and removing wax and soluble impurities in the cotton linter;
(5) mixing and pulping the cotton linter pulp obtained in the last step and glass fiber until the pulp concentration is 2.65%, pulping until the pulp beating degree is 15.8 DEG SR, and then pulping until the beating degree is 28 DEG SR;
(6) adding a defoaming agent, a dispersing agent, a waterproof agent and a whitening agent into the material obtained in the last step, uniformly stirring, and continuously stirring to 1.5 wt%;
(7) carrying out net-surfing papermaking molding on the material obtained in the last step to obtain 3 blanks of the low-tightness layer;
(8) spreading the blank paper of the low-tightness layer 3, uniformly spreading aluminum wires used by the framework layer 2 on the blank paper of the low-tightness layer 3, covering the blank paper of the high-tightness layer 1 on the framework layer 2, and attaching the blank paper of the high-tightness layer 1 and the blank paper of the low-tightness layer 3;
(9) and then the attached filter paper is prepared after vacuumizing, squeezing and drying.
Example two:
the air filter paper comprises a high-tightness layer 1, a low-tightness layer 3 and a high-tightness layer 1, wherein the high-tightness layer 1 is 0.2mm thick, the low-tightness layer 3 is 0.10mm thick, the high-tightness layer 1 comprises 46% of glass fibers, 43% of acetate fibers, 2% of defoaming agents, 1.5% of dispersing agents, 1% of water proofing agents and 1% of whitening agents, the low-tightness layer 3 comprises 58% of glass fibers, 37% of cotton linter pulp, 1.5% of defoaming agents, 1.5% of dispersing agents, 0.8% of water proofing agents and 0.8% of whitening agents in percentage by mass, the diameter of aluminum wires with the density of a framework layer 2 is 0.03mm, and the projection of the aluminum wires used for laying the framework layer 2 in the same horizontal plane occupies 0.5% of a unit.
A production process of air filter paper comprises the following steps:
(1) mixing silk glass fiber and acetate fiber, pulping until the concentration of the pulp is 2.0wt%, pulping until the beating degree of the pulp is 12.5 DEG SR, and then pulping until the beating degree is 18 DEG SR;
(2) adding a defoaming agent, a dispersing agent, a waterproof agent and a whitening agent into the material obtained in the last step, uniformly stirring, and continuously stirring to 1.8 wt%;
(3) carrying out net-surfing papermaking molding on the material obtained in the last step to obtain high-tightness layer 1 blank paper;
(4) adding 10% NaOH into the cotton linter pulp, stirring for 5h, and removing wax and soluble impurities in the cotton linter;
(5) mixing and pulping the cotton linter pulp obtained in the last step and glass fiber until the pulp concentration is 2.65%, pulping until the pulp beating degree is 16 DEG SR, and then pulping until the beating degree is 28 DEG SR;
(6) adding a defoaming agent, a dispersing agent, a waterproof agent and a whitening agent into the material obtained in the last step, uniformly stirring, and continuously stirring to 1.55 wt%;
(7) carrying out net-surfing papermaking molding on the material obtained in the last step to obtain 3 blanks of the low-tightness layer;
(8) spreading the blank paper of the low-tightness layer 3, uniformly spreading aluminum wires used by the framework layer 2 on the blank paper of the low-tightness layer 3, covering the blank paper of the high-tightness layer 1 on the framework layer 2, and attaching the blank paper of the high-tightness layer 1 and the blank paper of the low-tightness layer 3;
(9) and then the attached filter paper is prepared after vacuumizing, squeezing and drying.
Example three:
the air filter paper comprises a high-tightness layer 1 with the thickness of 0.22mm, a low-tightness layer 3 with the thickness of 0.11mm, and the high-tightness layer 1 comprises 48% of glass fiber, 42% of acetate fiber, 1.5% of defoaming agent, 1.5% of dispersing agent, 1.2% of water repellent agent and 1.2% of whitening agent, wherein the low-tightness layer 3 comprises 58% of glass fiber, 35% of linter pulp, 1.5% of defoaming agent, 1.5% of dispersing agent, 0.8% of water repellent agent and 0.8% of whitening agent by mass, the density of a framework layer 2 is 0.03mm in diameter of aluminum wires, and the projection of the aluminum wires used for laying the framework layer 2 in the same horizontal plane occupies 0.5% of unit area.
A production process of air filter paper comprises the following steps:
(1) mixing silk glass fiber and acetate fiber, pulping until the concentration of the pulp is 2.4wt%, pulping until the beating degree of the pulp is 13 DEG SR, and then pulping until the beating degree is 19 DEG SR;
(2) adding a defoaming agent, a dispersing agent, a waterproof agent and a whitening agent into the material obtained in the last step, uniformly stirring, and continuously stirring to 1.78 wt%;
(3) carrying out net-surfing papermaking molding on the material obtained in the last step to obtain high-tightness layer 1 blank paper;
(4) adding 10% NaOH into the cotton linter pulp, stirring for 5h, and removing wax and soluble impurities in the cotton linter;
(5) mixing and pulping the cotton linter pulp obtained in the last step and glass fiber until the pulp concentration is 2.65%, pulping until the pulp beating degree is 16 DEG SR, and then pulping until the beating degree is 28 DEG SR;
(6) adding a defoaming agent, a dispersing agent, a waterproof agent and a whitening agent into the material obtained in the last step, uniformly stirring, and continuously stirring to 1.7 wt%;
(7) carrying out net-surfing papermaking molding on the material obtained in the last step to obtain 3 blanks of the low-tightness layer;
(8) spreading the blank paper of the low-tightness layer 3, uniformly spreading aluminum wires used by the framework layer 2 on the blank paper of the low-tightness layer 3, covering the blank paper of the high-tightness layer 1 on the framework layer 2, and attaching the blank paper of the high-tightness layer 1 and the blank paper of the low-tightness layer 3;
(9) and then the attached filter paper is prepared after vacuumizing, squeezing and drying.
Technical indexes of the air filter paper prepared based on the first, second and third examples are shown in the following table:
according to the data obtained by the filter paper tests manufactured by the three embodiments, it can be seen that the filter paper manufactured by the formula disclosed by the invention has the advantages that the high-tightness layer 1 keeps a high-precision filtering effect, the larger pore diameter of the low-tightness layer 3 ensures the air circulation efficiency, and the framework layer 2 plays a rigid supporting role, so that the filter paper is protected from deformation when stressed, and meanwhile, a certain auxiliary filtering role is played.
The invention adopts a multilayer composite structure, the original filter paper with single mechanism and high tightness is converted into the filter paper with different tightness for compounding, the middle part is supplemented with metal wires with small diameter as a framework material, the integral rigidity of the filter paper is enhanced, the filter paper is not easy to deform and cannot be easily torn due to external force, and the functions of better rigidity, longer service life, compounding of multiple layers of filter paper with low tightness, staggered filtration and improvement of air flow and filtration efficiency are realized.
Claims (10)
1. An air filter paper characterized by: the high-tightness layer is composed of glass fibers, acetate fibers, a defoaming agent, a dispersing agent, a waterproof agent and a whitening agent, the low-tightness layer is composed of glass fibers, linter pulp, a defoaming agent, a dispersing agent, a waterproof agent and an anti-knocking agent, the framework layer is composed of aluminum wires, and the framework layer is arranged between the high-tightness layer and the low-tightness layer and is integrally formed through a vacuum process and a drying process.
2. An air filter paper as claimed in claim 1, wherein: the high-tightness layer comprises, by mass, 45-48% of glass fibers, 42-50% of acetate fibers, 1.5-3% of a defoaming agent, 1.5-3% of a dispersing agent, 0.8-4% of a waterproof agent and 0.8-4% of a whitening agent.
3. An air filter paper as claimed in claim 1, wherein: the low-tightness layer comprises, by mass, 55-58% of glass fibers, 35-40% of linter pulp, 1.5-3% of a defoaming agent, 1.5-3% of a dispersing agent, 0.8-4% of a water-proofing agent and 0.8-4% of a whitening agent.
4. An air filter paper as claimed in claim 1, wherein: the diameter of the aluminum wire with the density of the framework layer is 0.03-0.05 mm.
5. An air filter paper as claimed in claim 4, wherein: the projection of the aluminum wire used for paving the framework layer in the same horizontal plane occupies 0.5-1% of the unit area.
6. The process for producing air filter paper according to claim 1, comprising the steps of:
(1) mixing silk glass fiber and acetate fiber, pulping until the concentration of the pulp is 2.0-2.4wt%, pulping until the beating degree of the pulp is 12.5-13 DEG SR, and then pulping until the beating degree is 17-19 DEG SR;
(2) adding a defoaming agent, a dispersing agent, a waterproof agent and a whitening agent into the material obtained in the last step, uniformly stirring, and continuously stirring to 1.6-1.85 wt%;
(3) carrying out net-surfing papermaking molding on the material obtained in the last step to obtain high-tightness laminated paper;
(4) adding 10% NaOH into the cotton linter pulp, stirring for 5h, and removing wax and soluble impurities in the cotton linter;
(5) mixing the cotton linter pulp obtained in the last step with glass fiber, pulping until the pulp concentration is 2.6-2.9%, pulping until the pulp beating degree is 15-17 DEG SR, and then pulping until the beating degree is 27-29 DEG SR;
(6) adding a defoaming agent, a dispersing agent, a waterproof agent and a whitening agent into the material obtained in the last step, uniformly stirring, and continuously stirring to 1.3-1.7 wt%;
(7) carrying out net-surfing papermaking molding on the material obtained in the last step to obtain low-tightness laminated paper;
(8) spreading the low-tightness layer blank paper, uniformly spreading aluminum wires used by the framework layer on the low-tightness layer blank paper, covering the high-tightness layer blank paper on the framework layer, and attaching the high-tightness layer blank paper and the low-tightness layer blank paper;
(9) and then the attached filter paper is prepared after vacuumizing, squeezing and drying.
7. The process for producing air filter paper according to claim 6, wherein: the plane of the framework layer can be filled with resin, and the high-progress laminated paper and the low-tightness laminated paper are filled with resin and aluminum wires.
8. The process for producing air filter paper according to claim 1, wherein: the dispersing agent is vinyl bis stearamide.
9. The process for producing air filter paper according to claim 1, wherein: the thickness of the high-tightness layer is 0.2-0.22 mm.
10. The process for producing air filter paper according to claim 1, wherein: the thickness of the low-tightness layer is 0.10-0.15 mm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115418879A (en) * | 2022-09-29 | 2022-12-02 | 石家庄辰泰滤纸有限公司 | Filter paper and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115418879A (en) * | 2022-09-29 | 2022-12-02 | 石家庄辰泰滤纸有限公司 | Filter paper and preparation method and application thereof |
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