CN110901188A - Filter type non-woven fabric and preparation method thereof - Google Patents
Filter type non-woven fabric and preparation method thereof Download PDFInfo
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- CN110901188A CN110901188A CN201811088040.0A CN201811088040A CN110901188A CN 110901188 A CN110901188 A CN 110901188A CN 201811088040 A CN201811088040 A CN 201811088040A CN 110901188 A CN110901188 A CN 110901188A
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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
- 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
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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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
- 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
-
- 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
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
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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
- 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
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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
- 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
- B32B2262/0276—Polyester fibres
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/40—Fibres of carbon
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- Polymers & Plastics (AREA)
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Filtering Materials (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention relates to the technical field of non-woven fabrics, and discloses a filter type non-woven fabric which comprises two double-combined non-woven fabrics, wherein a PTFE (polytetrafluoroethylene) membrane is fixedly arranged between the two double-combined non-woven fabrics. The non-woven fabric prepared in the step one is placed on an automatic winding drum to automatically roll and glue is coated on the non-woven fabric in the step three, then the PTFE membrane prepared in the step 2) is placed on the automatic winding drum, the non-woven fabric subjected to glue coating and the PTFE membrane are heated and bonded through a hot roller at the same time, finally, the other surface subjected to bonded cloth is subjected to glue coating, the other surface of the other non-woven fabric and the other surface of the PTFE membrane are heated and bonded through the hot roller, the filtration type non-woven fabric can be prepared, the non-woven fabric and the PTFE membrane are combined and bonded through extrusion and bonding of the automatic hot roller, so that the product is combined and bonded at one time, the traditional repeated combination and bonding are avoided, and the processing efficiency of the non-woven fabric is greatly improved.
Description
Technical Field
The invention relates to the technical field of non-woven fabrics, in particular to a filter type non-woven fabric and a preparation method thereof.
Background
The non-woven fabric is also called non-woven fabric, and is made up by using directional or random fibre, and possesses the characteristics of damp-proofing, air-permeable, flexible, light weight, no combustion-supporting, easy decomposition, non-toxic, non-irritation, rich colour, low cost and can be cyclically reused, for example, it is made up by using polypropylene granules as raw material through the processes of high-temp. melting, spinning, laying and hot-pressing coiling and continuous one-step production.
With the development of times and science and technology, the application of non-woven fabrics is more and more extensive, for example, an X, gamma ray shielding non-woven fabric and a manufacturing method thereof are disclosed in chinese patent CN102560900A, the X, gamma ray shielding non-woven fabric is composed of polypropylene non-woven fabric uniformly doped with metals of tantalum, tungsten, strontium or compounds thereof, wherein the mass fraction of the metals or compounds thereof in the non-woven fabric is 60-70 parts, the tantalum element accounts for 30-40 parts of the metal element, the tungsten element accounts for 40-50 parts of the metal element, and the strontium element accounts for 10-30 parts of the metal element, the manufacturing method of the X, gamma ray shielding non-woven fabric is prepared by adopting a melt-blowing and spraying composite process, the invention provides the X, gamma ray shielding non-woven fabric which has the characteristics of no skin contact toxicity, no shielding weak absorption region and high shielding efficiency, but the non-woven fabric prepared by the preparation method of the non-woven fabric does not achieve good, and the preparation process is relatively complicated, so the filter type non-woven fabric and the preparation method thereof are provided to solve the problem.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a filter type non-woven fabric and a preparation method thereof, which have the advantages of high preparation efficiency, good filtering effect and the like, and solve the problems that the existing non-woven fabric cannot achieve good filtering effect and the preparation process is relatively complicated.
(II) technical scheme
In order to realize the purposes of high preparation efficiency and good filtering effect, the invention provides the following technical scheme:
the utility model provides a filtration type non-woven fabrics, includes that quantity is two combination non-woven fabrics, two fixed mounting has the PTFE membrane between the two combination non-woven fabrics.
Preferably, the double-combined non-woven fabric and the PTFE membrane are connected in an adhesion mode, and the connecting interfaces of the double-combined non-woven fabric and the PTFE membrane are aligned.
A filter type non-woven fabric comprises the following raw materials in parts by weight: PET60-70 parts, PE70-80 parts, carbon fiber 3-10 parts, antibacterial agent 5-10 parts, acrylic adhesive 10-15 parts, diatomite 1-2 parts, mixed solution 20-30 parts, dispersing agent 0.1-1 part and polytetrafluoroethylene resin powder 3-4 parts.
Preferably, 0.1-1 part of the dispersing agent is 1501 antistatic agent, namely a compound of chromic alkyl hydroxide and calcium isooctyl succinate sulfonate, 5-10 parts of the antibacterial agent is a nano-silver chitosan antibacterial agent and is prepared by reacting dialdehyde chitosan and silver nitrate, and the mass ratio of the sum of the mass of the nano-silver and the dialdehyde chitosan in the nano-silver chitosan antibacterial agent to the mass of the solvent is 1: 1.
Preferably, the mixed solution 20-30 parts is a mixed solution of organic silicon and solvent oil, the organic silicon components in the mixed solution 20-30 parts mainly comprise MQ silicon resin and dimethyl silicone oil, the molecular weight of the polytetrafluoroethylene resin powder is 230-500 ten thousand, and the particle size is 0.2-0.4 micron.
Preferably, the feed comprises the following raw materials in parts by weight: PET60 parts, PE70 parts, carbon fiber 3 parts, antibacterial agent 5 parts, acrylic adhesive 10 parts, diatomite 1 part, mixed solution 20 parts, dispersing agent 0.1 part and polytetrafluoroethylene resin powder 3 parts.
Preferably, the feed comprises the following raw materials in parts by weight: the coating comprises, by weight, 70 parts of PET, 80 parts of PE, 10 parts of carbon fiber, 10 parts of an antibacterial agent, 15 parts of an acrylic adhesive, 2 parts of diatomite, 30 parts of a mixed solution, 1 part of a dispersing agent and 4 parts of polytetrafluoroethylene resin powder.
Another technical problem to be solved by the present invention is to provide a method for preparing a filtration type nonwoven fabric, comprising the following steps:
1) loosening, mixing, finely opening, filtering and carding PET, PE and carbon fibers, then uniformly mixing an antibacterial agent and acrylic acid to obtain an impregnation liquid, performing impregnation treatment on the mixed fibers to obtain a non-woven fabric to be treated, then soaking the non-woven fabric to be treated in diatomite suspension for 30-50 hours under the condition of continuous flow, and finally drying, baking, cooling and collecting rolls of the obtained non-woven fabric to obtain a finished non-woven fabric;
2) placing the mixed ingredients in an oven for full curing, prepressing the mixed ingredients into a columnar blank, then placing the columnar blank in an extruder, extruding strips by pushing and pressing, then carrying out calendaring and drying processes on the strips to prepare a base membrane, wherein the extrusion compression ratio is 50-120, the diameter of the extruded strips is 20-25mm, placing the base membrane in warm water for heat preservation, stretching the base membrane into a membrane, longitudinally stretching the membrane, and then stretching the membrane on a transverse stretcher into a high-strength self-adhesive polytetrafluoroethylene membrane tape with the width of 1.8-2.2m, the longitudinal stretching ratio is 3-15 times, and the transverse stretching ratio is 8-10 times, thus preparing the PTFE membrane;
3) placing the non-woven fabric prepared in the step 1) on an automatic winding drum to automatically roll and glue the non-woven fabric, then placing the PTFE film prepared in the step 2) on the automatic winding drum, heating and bonding the glued non-woven fabric and the PTFE film through a hot roller at the same time, finally gluing the other side of the bonded fabric, and heating and bonding the other side of the other non-woven fabric and the PTFE film through the hot roller to obtain the filter type non-woven fabric.
(III) advantageous effects
Compared with the prior art, the invention provides a filter type non-woven fabric and a preparation method thereof, and the filter type non-woven fabric has the following beneficial effects:
1. the filtration type non-woven fabric and the preparation method thereof are characterized in that in the first step, PET, PE and carbon fibers are loosened, mixed, finely opened, filtered and carded, then an antibacterial agent and acrylic acid are uniformly mixed to obtain impregnation liquid, the mixed fibers are subjected to impregnation treatment to obtain the non-woven fabric to be treated, then the non-woven fabric to be treated is soaked in diatomite suspension for 30-50 hours under the continuous flow condition, finally the obtained non-woven fabric is dried, baked, cooled and wound to obtain the finished non-woven fabric, wherein the antibacterial agent greatly improves the filtration and sterilization effects of the non-woven fabric, meanwhile, the addition of the carbon fibers improves the adsorption capacity of the non-woven fabric, the non-woven fabric is soaked in diatomite suspension for 30-50 hours under the continuous flow condition in the preparation process of the non-woven fabric, so that the air permeability of the non-woven fabric is, thereby improving the practicability of the non-woven fabric and enabling the non-woven fabric to be suitable for filtering materials in various filtering devices.
2. The non-woven fabric prepared in the step one is placed on an automatic winding drum to automatically roll and glue is coated on the non-woven fabric in the step three, then the PTFE membrane prepared in the step 2) is placed on the automatic winding drum, the non-woven fabric subjected to glue coating and the PTFE membrane are heated and bonded through a hot roller at the same time, finally, the other surface subjected to bonded cloth is subjected to glue coating, the other surface of the other non-woven fabric and the other surface of the PTFE membrane are heated and bonded through the hot roller, the filtration type non-woven fabric can be prepared, the non-woven fabric and the PTFE membrane are combined and bonded through extrusion and bonding of the automatic hot roller, so that the product is combined and bonded at one time, the traditional repeated combination and bonding are avoided, and the processing efficiency of the non-woven fabric is greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of a filtering type non-woven fabric according to the present invention.
In the figure: 1 double-combined non-woven fabric and 2PTFE membrane.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention discloses a filter type nonwoven fabric, which includes two double-combined nonwoven fabrics 1, and a PTFE membrane 2 is fixedly mounted between the two double-combined nonwoven fabrics 1.
The first embodiment is as follows: a filter type non-woven fabric comprises the following raw materials in parts by weight: PET60 parts, PE70 parts, carbon fiber 3 parts, antibacterial agent 5 parts, acrylic adhesive 10 parts, diatomite 1 part, mixed solution 20 parts, dispersing agent 0.1 part and polytetrafluoroethylene resin powder 3 parts.
A preparation method of a filtering type non-woven fabric comprises the following steps:
1) loosening, mixing, finely opening, filtering and carding PET, PE and carbon fibers, then uniformly mixing an antibacterial agent and acrylic acid to obtain an impregnation liquid, performing impregnation treatment on the mixed fibers to obtain a non-woven fabric to be treated, then soaking the non-woven fabric to be treated in diatomite suspension for 30-50 hours under the condition of continuous flow, and finally drying, baking, cooling and collecting rolls of the obtained non-woven fabric to obtain a finished non-woven fabric;
2) placing the mixed ingredients in an oven for full curing, prepressing the mixed ingredients into a columnar blank, then placing the columnar blank in an extruder, extruding strips by pushing and pressing, then carrying out calendaring and drying processes on the strips to prepare a base membrane, wherein the extrusion compression ratio is 50-120, the diameter of the extruded strips is 20-25mm, placing the base membrane in warm water for heat preservation, stretching the base membrane into a membrane, longitudinally stretching the membrane, and then stretching the membrane on a transverse stretcher into a high-strength self-adhesive polytetrafluoroethylene membrane tape with the width of 1.8-2.2m, the longitudinal stretching ratio is 3-15 times, and the transverse stretching ratio is 8-10 times, thus preparing the PTFE membrane;
3) placing the non-woven fabric prepared in the step 1) on an automatic winding drum to automatically roll and glue the non-woven fabric, then placing the PTFE film prepared in the step 2) on the automatic winding drum, heating and bonding the glued non-woven fabric and the PTFE film through a hot roller at the same time, finally gluing the other side of the bonded fabric, and heating and bonding the other side of the other non-woven fabric and the PTFE film through the hot roller to obtain the filter type non-woven fabric.
This preparation method of filtration type non-woven fabrics adopts the preparation raw materials of minimum proportion to prepare, and the non-woven fabrics of preparing accords with the demand that most consumers consumed, does benefit to the popularization of non-woven fabrics in market, and preparation efficiency is high simultaneously, and the filterability contrast of non-woven fabrics also has certain superiority to other filter cloth.
Example two: a filter type non-woven fabric comprises the following raw materials in parts by weight: the coating comprises, by weight, 70 parts of PET, 80 parts of PE, 10 parts of carbon fiber, 10 parts of an antibacterial agent, 15 parts of an acrylic adhesive, 2 parts of diatomite, 30 parts of a mixed solution, 1 part of a dispersing agent and 4 parts of polytetrafluoroethylene resin powder.
A preparation method of a filtering type non-woven fabric comprises the following steps:
1) loosening, mixing, finely opening, filtering and carding PET, PE and carbon fibers, then uniformly mixing an antibacterial agent and acrylic acid to obtain an impregnation liquid, performing impregnation treatment on the mixed fibers to obtain a non-woven fabric to be treated, then soaking the non-woven fabric to be treated in diatomite suspension for 30-50 hours under the condition of continuous flow, and finally drying, baking, cooling and collecting rolls of the obtained non-woven fabric to obtain a finished non-woven fabric;
2) placing the mixed ingredients in an oven for full curing, prepressing the mixed ingredients into a columnar blank, then placing the columnar blank in an extruder, extruding strips by pushing and pressing, then carrying out calendaring and drying processes on the strips to prepare a base membrane, wherein the extrusion compression ratio is 50-120, the diameter of the extruded strips is 20-25mm, placing the base membrane in warm water for heat preservation, stretching the base membrane into a membrane, longitudinally stretching the membrane, and then stretching the membrane on a transverse stretcher into a high-strength self-adhesive polytetrafluoroethylene membrane tape with the width of 1.8-2.2m, the longitudinal stretching ratio is 3-15 times, and the transverse stretching ratio is 8-10 times, thus preparing the PTFE membrane;
3) placing the non-woven fabric prepared in the step 1) on an automatic winding drum to automatically roll and glue the non-woven fabric, then placing the PTFE film prepared in the step 2) on the automatic winding drum, heating and bonding the glued non-woven fabric and the PTFE film through a hot roller at the same time, finally gluing the other side of the bonded fabric, and heating and bonding the other side of the other non-woven fabric and the PTFE film through the hot roller to obtain the filter type non-woven fabric.
According to the preparation method of the filtering type non-woven fabric, the preparation raw materials with the largest proportion are adopted for preparation, the prepared non-woven fabric is excellent in quality, has a good filtering effect, is suitable for products with high filtering requirements, is high in preparation efficiency, and is beneficial to market popularization.
The invention has the beneficial effects that: the method comprises the steps of loosening, mixing, fine opening, filtering and carding PET, PE and carbon fibers in the first step, then uniformly mixing an antibacterial agent and acrylic acid to obtain impregnation liquid, performing impregnation treatment on the mixed fibers to obtain a non-woven fabric to be treated, then soaking the non-woven fabric in diatomite suspension for 30-50 hours under the continuous flow condition, finally drying, baking, cooling and collecting materials in a winding drum to obtain the finished non-woven fabric, wherein the antibacterial agent greatly improves the filtering and sterilizing effects of the non-woven fabric, meanwhile, the addition of the carbon fibers improves the adsorption capacity of the non-woven fabric, the non-woven fabric is soaked in the diatomite suspension for 30-50 hours under the continuous flow condition in the preparation process of the non-woven fabric, so that the practicability of the non-woven fabric is improved, and the non-woven fabric can be suitable for filter materials in various filter devices, the non-woven fabric prepared in the first step is placed on an automatic winding drum to automatically roll and glue is coated on the non-woven fabric in the third step, then the PTFE membrane prepared in the second step is placed on the automatic winding drum, the non-woven fabric subjected to glue coating and the PTFE membrane are simultaneously subjected to heating and bonding through a hot roller, finally the other surface subjected to the bonded fabric is subjected to glue coating, another non-woven fabric and the other surface of the PTFE membrane are subjected to heating and bonding through the hot roller, the filtering non-woven fabric can be prepared, the non-woven fabric and the PTFE membrane are formed by three-layer combination through automatic hot roller extrusion bonding, and therefore the product is combined and bonded at one time, the traditional repeated combination and bonding are avoided, the processing efficiency of the non-woven fabric is greatly improved, the existing non-woven fabric is solved, the good filtering effect cannot be achieved, and the preparation process is more complicated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The filter type non-woven fabric is characterized by comprising two double-combined non-woven fabrics (1), wherein a PTFE (polytetrafluoroethylene) membrane (2) is fixedly arranged between the two double-combined non-woven fabrics (1).
2. A filter type nonwoven fabric as claimed in claim 1, characterised in that the double-combined nonwoven fabric (1) is connected to the PTFE membrane (2) by means of gluing and the double-combined nonwoven fabric (1) is flush with the PTFE membrane (2) at the connection interface.
3. The filtration type non-woven fabric according to claim 1, which is characterized by comprising the following raw materials in parts by weight: PET60-70 parts, PE70-80 parts, carbon fiber 3-10 parts, antibacterial agent 5-10 parts, acrylic adhesive 10-15 parts, diatomite 1-2 parts, mixed solution 20-30 parts, dispersing agent 0.1-1 part and polytetrafluoroethylene resin powder 3-4 parts.
4. A filtration nonwoven fabric as defined in claim 3, wherein: 0.1-1 part of dispersant is 1501 antistatic agent, namely a compound of chromic alkyl hydroxide and calcium isooctyl succinate sulfonate, 5-10 parts of antibacterial agent is nano-silver chitosan antibacterial agent prepared by reacting dialdehyde chitosan and silver nitrate, and the mass ratio of the sum of the mass of the nano-silver and the dialdehyde chitosan in the nano-silver chitosan antibacterial agent to the mass of the solvent is 1: 1.
5. A filtration nonwoven fabric as defined in claim 3, wherein: the mixed solution 20-30 parts is a mixed solution of organic silicon and solvent oil, the organic silicon components in the mixed solution 20-30 parts mainly comprise MQ silicon resin and dimethyl silicone oil, the molecular weight of polytetrafluoroethylene resin powder is 230-500 ten thousand, and the particle size is 0.2-0.4 micron.
6. The filtration type non-woven fabric according to claim 1, which is characterized by comprising the following raw materials in parts by weight: PET60 parts, PE70 parts, carbon fiber 3 parts, antibacterial agent 5 parts, acrylic adhesive 10 parts, diatomite 1 part, mixed solution 20 parts, dispersing agent 0.1 part and polytetrafluoroethylene resin powder 3 parts.
7. The filtration type non-woven fabric according to claim 1, which is characterized by comprising the following raw materials in parts by weight: the coating comprises, by weight, 70 parts of PET, 80 parts of PE, 10 parts of carbon fiber, 10 parts of an antibacterial agent, 15 parts of an acrylic adhesive, 2 parts of diatomite, 30 parts of a mixed solution, 1 part of a dispersing agent and 4 parts of polytetrafluoroethylene resin powder.
8. A preparation method of a filtering type non-woven fabric is characterized by comprising the following steps:
1) loosening, mixing, finely opening, filtering and carding PET, PE and carbon fibers, then uniformly mixing an antibacterial agent and acrylic acid to obtain an impregnation liquid, performing impregnation treatment on the mixed fibers to obtain a non-woven fabric to be treated, then soaking the non-woven fabric to be treated in diatomite suspension for 30-50 hours under the condition of continuous flow, and finally drying, baking, cooling and collecting rolls of the obtained non-woven fabric to obtain a finished non-woven fabric;
2) placing the mixed ingredients in an oven for full curing, prepressing the mixed ingredients into a columnar blank, then placing the columnar blank in an extruder, extruding strips by pushing and pressing, then carrying out calendaring and drying processes on the strips to prepare a base membrane, wherein the extrusion compression ratio is 50-120, the diameter of the extruded strips is 20-25mm, placing the base membrane in warm water for heat preservation, stretching the base membrane into a membrane, longitudinally stretching the membrane, and then stretching the membrane on a transverse stretcher into a high-strength self-adhesive polytetrafluoroethylene membrane tape with the width of 1.8-2.2m, the longitudinal stretching ratio is 3-15 times, and the transverse stretching ratio is 8-10 times, thus preparing the PTFE membrane;
3) placing the non-woven fabric prepared in the step 1) on an automatic winding drum to automatically roll and glue the non-woven fabric, then placing the PTFE film prepared in the step 2) on the automatic winding drum, heating and bonding the glued non-woven fabric and the PTFE film through a hot roller at the same time, finally gluing the other side of the bonded fabric, and heating and bonding the other side of the other non-woven fabric and the PTFE film through the hot roller to obtain the filter type non-woven fabric.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811088040.0A CN110901188A (en) | 2018-09-18 | 2018-09-18 | Filter type non-woven fabric and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111841148A (en) * | 2020-08-04 | 2020-10-30 | 昆山市华滤环保科技有限公司 | Non-woven fabric for filtration and preparation method thereof |
| CN115383360A (en) * | 2022-09-20 | 2022-11-25 | 南京工程学院 | Movable environment-friendly intelligent welding robot operation cabin |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111841148A (en) * | 2020-08-04 | 2020-10-30 | 昆山市华滤环保科技有限公司 | Non-woven fabric for filtration and preparation method thereof |
| CN115383360A (en) * | 2022-09-20 | 2022-11-25 | 南京工程学院 | Movable environment-friendly intelligent welding robot operation cabin |
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