CN109235036A - A kind of method that decatize heating in-situ preparation-immersion coating prepares bacteriostasis, preservation non-woven fabrics packaging material - Google Patents
A kind of method that decatize heating in-situ preparation-immersion coating prepares bacteriostasis, preservation non-woven fabrics packaging material Download PDFInfo
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- CN109235036A CN109235036A CN201810978878.0A CN201810978878A CN109235036A CN 109235036 A CN109235036 A CN 109235036A CN 201810978878 A CN201810978878 A CN 201810978878A CN 109235036 A CN109235036 A CN 109235036A
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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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
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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
- D06M11/07—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/11—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
- D06M11/28—Halides of elements of Groups 8, 9, 10 or 18 of the Periodic System
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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
- D06M11/51—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 sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/55—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 sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
-
- 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
- D06M11/83—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 metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
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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
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
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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
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
- D06M13/238—Tannins, e.g. gallotannic acids
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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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
-
- 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
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
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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
Abstract
The invention discloses the methods that a kind of decatize heating in-situ preparation-immersion coating prepares bacteriostasis, preservation non-woven fabrics packaging material, it is impregnated in dehydrated alcohol after polypropylene non-woven fabric is cut, it is cleaned repeatedly with distilled water, after drying, it is placed in acidic oxidation corrosive liquid and impregnates, react in a water bath, after dry, it is impregnated in distilled water, the polypropylene non-woven fabric of surface hydrophilic modification is made in re-dry；The polypropylene non-woven fabric of gained surface hydrophilic modification is immersed in mixed solution, after oscillation treatment, taking-up is cleaned with deionized water, is placed in decatize under saturated steam conditions, the in-situ preparation nano-Ag particles on non-woven fabrics；Acetic acid solution is added into chitosan, chitosan solution is made in mechanical dispersion, and tea polyphenols are added, and chitosan-tea polyphenols mixed liquor is made in low speed dispersion stirring；The non-woven fabrics of gained in-situ preparation nano-Ag particles is immersed, is impregnated in climatic chamber, bacteriostasis, preservation non-woven fabrics packaging material is made.
Description
Technical field
The invention belongs to nonwoven cloth material fields, and in particular to a kind of decatize heating in-situ preparation-immersion coating preparation suppression
The method of the fresh-keeping non-woven fabrics packaging material of bacterium.
Background technique
Diversification with food in links such as production, circulation, storage and consumption patterns with the improvement of the quality of life, consumption
Person is fresh-keeping to quality, the safety of packaging of food itself, flavor and instant edible etc. will be known as higher requirement.Therefore various countries
All in the research and development for accelerating rhythm progress new Material of Food Packaging, new technology, and active packing is just because of it is distinctive excellent
Gesture (is not only the barrier of product and external environment, and combines advanced food packaging and material science and technology, to greatest extent
Ground maintains the quality of packaged food.) become the main trend studied both at home and abroad.Currently, domestic and foreign scholars are with plastic film
A large amount of research has been done in terms of developing Active Packaging Materials for substrate, wherein mainly based on bacteriostatic activity packaging material, and it is right
The research of antioxidant activity packaging material is relatively fewer, and application of the active packing new material in Chinese commodity packaging is not yet
It is universal.And the substrate generally selected when studying Active Packaging Materials is plastic film, edible material, paper etc., and select
It is cheap, have excellent performance, the non-woven fabrics of greening and environmental protection wide adaptability is rarely reported, therefore to nano silver-chitosan-tea polyphenols
This novel active packaging material of coating non-woven fabrics (comprehensively considers the performance indicators such as antibacterial, anti-oxidant, mechanical strength, develops tool
There is the packaging material of the Composites active function such as anti-oxidant, antibacterial, inhibit food spoilage comprehensively, extends Food Shelf-life, enhancing
The mechanical performance of material, is applied to it widely in real life) preparation and performance study also remain brand-new
Research topic.
Summary of the invention
The purpose of the present invention is being directed to existing problem, a kind of decatize heating in-situ preparation-immersion coating preparation is provided
The method of bacteriostasis, preservation non-woven fabrics packaging material, the non-woven fabrics packaging material fresh-keeping effect made according to this method is obvious, antibacterial
Property it is preferable, have excellent washing fastness.
The present invention is achieved by the following technical solutions:
A kind of method that decatize heating in-situ preparation-immersion coating prepares bacteriostasis, preservation non-woven fabrics packaging material, which is characterized in that
Include the following steps:
(1) polypropylene non-woven fabric surface hydrophilic modification:
20-25h is impregnated after polypropylene non-woven fabric is cut in dehydrated alcohol, is cleaned repeatedly with distilled water, is done at 63-67 DEG C
It after dry, be placed in acidic oxidation corrosive liquid and impregnate, react 3-4h in 33-37 DEG C of water-bath, at 60-63 DEG C after dry 1-2h,
7-8h is impregnated in distilled water, dry 1-2h, is made the polypropylene non-woven fabric of surface hydrophilic modification at 60-63 DEG C；
(2) absorption of loquat leaf extract and silver ion on non-woven fabrics:
The polypropylene non-woven fabric of gained surface hydrophilic modification in (1) is immersed in mixed solution by bath raio 1:70, oscillation treatment
After 55-65min, taking-up is cleaned with deionized water, is placed in decatize 25-35min under saturated steam conditions, is given birth in situ on non-woven fabrics
At nano-Ag particles；
(3) bacteriostasis, preservation non-woven fabrics packaging material is prepared:
1% acetic acid solution is added into 5-10 parts of chitosans, chitosan solution is made in mechanical dispersion, 5-10 parts of tea polyphenols are added,
Low speed dispersion stirring, is made chitosan-tea polyphenols mixed liquor；By the non-woven fabrics leaching of gained in-situ preparation nano-Ag particles in (2)
Enter wherein, 23-25h is impregnated in climatic chamber, bacteriostasis, preservation non-woven fabrics packaging material is made.
Further, 13-14 part six is added in the sulfuric acid solution for being 15% to 50-60 parts of concentration in step (1) and is hydrated trichlorine
Change iron, dissolves and acidic oxidation corrosive liquid is made.
Further, in step (2) loquat-leaf extract preparation: loguat leaf is cleaned up, is pulverized after drying
Deionized water, the heating leaching 70-90min at 80-85 DEG C is added by solid-liquid ratio 1:20-30 into 4-6 parts of Loquat Leafs in end
Afterwards, it filters, 15-25min is centrifugated with the speed of 4000rpm, obtain loquat-leaf extract filtrate；
Mixed solution is made of the silver nitrate solution and loquat-leaf extract filtrate of 0.5mol/L；
Saturated steam conditions are 98 DEG C of temperature, relative humidity 98%.
Further, the content of tea polyphenols and chitosan is 1.5% in step (3), and the temperature of climatic chamber is 25
DEG C, relative humidity 50%.
The present invention has the advantage that compared with prior art
(1) the acidic oxidation corrosive liquid formed with sulfuric acid and ferric trichloride the polypropylene non-woven fabric hydrophobic to packaging base material carries out table
Face hydrophilic modifying, the hydrophilicity for improving substrate keep it convenient and nano silver, chitosan and the stronger combination of tea polyphenols；It is modified
The hydrophily of substrate water absorption rate afterwards becomes larger, contact angle becomes smaller i.e. substrate is significantly improved；Polypropylene non-woven fabric before modified
Surface relative smooth, and the apparent etching of modified surface appearance and concavity deposit, more adaptation chitosan and tea polyphenols
Attachment；Corrosive liquid introduces hydrophilic radical hydroxyl after acting on substrate, further illustrates the reason of substrate hydrophilic improves.
(2) loquat-leaf extract of non-woven fabrics absorption can be made its adsorbed silver ion by the way of decatize heating
It is directly reduced into nano silver in place, the silver content of non-woven fabrics is gradually increased with the increase of extract dosage, and correspondingly it is to gold
The bacteriostasis property of staphylococcus aureus also gradually increases, and has using the argentiferous non-woven fabrics of in-situ synthesized preparation excellent washable
Performance.
(3) it is antibacterial to prepare chitosan-tea polyphenols-nano-silver nonwoven cloth under the conditions of constant temperature and humidity for recycling dip-coating method
Fresh-keeping packaging material improves significant as polyphenol content increases inoxidizability, and free radical is clear after polyphenol content is to 1.5%
Except rate tends towards stability；The air penetrability of material and aperture all become smaller, and barrier property improves；The addition of chitosan introduces new hydrophilic group
Group-OH ,-NH2, the addition of tea polyphenols improves the compatibility of chitosan and substrate；Material fresh-keeping effect is obvious, biocidal property compared with
It is good.
Specific embodiment
Embodiment 1
A kind of method that decatize heating in-situ preparation-immersion coating prepares bacteriostasis, preservation non-woven fabrics packaging material, which is characterized in that
Include the following steps:
(1) polypropylene non-woven fabric surface hydrophilic modification:
20h is impregnated after polypropylene non-woven fabric is cut in dehydrated alcohol, is cleaned repeatedly with distilled water, it is dry at 63-67 DEG C
Afterwards, it is placed in acidic oxidation corrosive liquid and impregnates, react 3h in 33-37 DEG C of water-bath, at 60-63 DEG C after dry 1h, distilling
7h is impregnated in water, dry 1h, is made the polypropylene non-woven fabric of surface hydrophilic modification at 60-63 DEG C；
(2) absorption of loquat leaf extract and silver ion on non-woven fabrics:
The polypropylene non-woven fabric of gained surface hydrophilic modification in (1) is immersed in mixed solution by bath raio 1:70, oscillation treatment
After 55min, taking-up is cleaned with deionized water, is placed in decatize 25min under saturated steam conditions, the in-situ preparation nanometer on non-woven fabrics
Argent grain；
(3) bacteriostasis, preservation non-woven fabrics packaging material is prepared:
1% acetic acid solution is added into 5 parts of chitosans, chitosan solution is made in mechanical dispersion, and 5 parts of tea polyphenols, low speed point is added
Stirring is dissipated, chitosan-tea polyphenols mixed liquor is made；The non-woven fabrics of gained in-situ preparation nano-Ag particles in (2) is immersed,
23h is impregnated in climatic chamber, and bacteriostasis, preservation non-woven fabrics packaging material is made.
Further, 13 parts of Iron(III) chloride hexahydrates are added in the sulfuric acid solution for being 15% to 50 parts of concentration in step (1),
It dissolves and acidic oxidation corrosive liquid is made.
Further, in step (2) loquat-leaf extract preparation: loguat leaf is cleaned up, is pulverized after drying
Deionized water is added by solid-liquid ratio 1:20 into 4 parts of Loquat Leafs in end, at 80-85 DEG C after heating leaching 70min, filter,
It is centrifugated 15min with the speed of 4000rpm, obtains loquat-leaf extract filtrate；
Mixed solution is made of the silver nitrate solution and loquat-leaf extract filtrate of 0.5mol/L；
Saturated steam conditions are 98 DEG C of temperature, relative humidity 98%.
Further, the content of tea polyphenols and chitosan is 1.5% in step (3), and the temperature of climatic chamber is 25
DEG C, relative humidity 50%.
Embodiment 2
A kind of method that decatize heating in-situ preparation-immersion coating prepares bacteriostasis, preservation non-woven fabrics packaging material, which is characterized in that
Include the following steps:
(1) polypropylene non-woven fabric surface hydrophilic modification:
25h is impregnated after polypropylene non-woven fabric is cut in dehydrated alcohol, is cleaned repeatedly with distilled water, it is dry at 63-67 DEG C
Afterwards, it is placed in acidic oxidation corrosive liquid and impregnates, react 4h in 33-37 DEG C of water-bath, at 60-63 DEG C after dry 2h, distilling
8h is impregnated in water, dry 2h, is made the polypropylene non-woven fabric of surface hydrophilic modification at 60-63 DEG C；
(2) absorption of loquat leaf extract and silver ion on non-woven fabrics:
The polypropylene non-woven fabric of gained surface hydrophilic modification in (1) is immersed in mixed solution by bath raio 1:70, oscillation treatment
After 65min, taking-up is cleaned with deionized water, is placed in decatize 35min under saturated steam conditions, the in-situ preparation nanometer on non-woven fabrics
Argent grain；
(3) bacteriostasis, preservation non-woven fabrics packaging material is prepared:
1% acetic acid solution is added into 10 parts of chitosans, mechanical dispersion is made chitosan solution, 10 parts of tea polyphenols, low speed is added
Dispersion stirring, is made chitosan-tea polyphenols mixed liquor；The non-woven fabrics of gained in-situ preparation nano-Ag particles in (2) is immersed it
In, 25h is impregnated in climatic chamber, and bacteriostasis, preservation non-woven fabrics packaging material is made.
Further, 14 parts of Iron(III) chloride hexahydrates are added in the sulfuric acid solution for being 15% to 60 parts of concentration in step (1),
It dissolves and acidic oxidation corrosive liquid is made.
Further, in step (2) loquat-leaf extract preparation: loguat leaf is cleaned up, is pulverized after drying
Deionized water is added by solid-liquid ratio 1:30 into 6 parts of Loquat Leafs in end, at 80-85 DEG C after heating leaching 90min, filter,
It is centrifugated 25min with the speed of 4000rpm, obtains loquat-leaf extract filtrate；
Mixed solution is made of the silver nitrate solution and loquat-leaf extract filtrate of 0.5mol/L；
Saturated steam conditions are 98 DEG C of temperature, relative humidity 98%.
Further, the content of tea polyphenols and chitosan is 1.5% in step (3), and the temperature of climatic chamber is 25
DEG C, relative humidity 50%.
The non-woven fabrics packaging material fresh-keeping effect made according to the method for the present invention is obvious, and biocidal property is preferable, has excellent
Washing fastness；Freshness date, the fresh shelf life of fruit can be extended；99.88% is up to the bacteriostasis rate of staphylococcus aureus,
After 20 washings, bacteriostasis rate remains at 98% or more.
Claims (4)
1. a kind of method that decatize heating in-situ preparation-immersion coating prepares bacteriostasis, preservation non-woven fabrics packaging material, feature exist
In including the following steps:
(1) polypropylene non-woven fabric surface hydrophilic modification:
20-25h is impregnated after polypropylene non-woven fabric is cut in dehydrated alcohol, is cleaned repeatedly with distilled water, is done at 63-67 DEG C
It after dry, be placed in acidic oxidation corrosive liquid and impregnate, react 3-4h in 33-37 DEG C of water-bath, at 60-63 DEG C after dry 1-2h,
7-8h is impregnated in distilled water, dry 1-2h, is made the polypropylene non-woven fabric of surface hydrophilic modification at 60-63 DEG C；
(2) absorption of loquat leaf extract and silver ion on non-woven fabrics:
The polypropylene non-woven fabric of gained surface hydrophilic modification in (1) is immersed in mixed solution by bath raio 1:70, oscillation treatment
After 55-65min, taking-up is cleaned with deionized water, is placed in decatize 25-35min under saturated steam conditions, is given birth in situ on non-woven fabrics
At nano-Ag particles；
(3) bacteriostasis, preservation non-woven fabrics packaging material is prepared:
1% acetic acid solution is added into 5-10 parts of chitosans, chitosan solution is made in mechanical dispersion, 5-10 parts of tea polyphenols are added,
Low speed dispersion stirring, is made chitosan-tea polyphenols mixed liquor；By the non-woven fabrics leaching of gained in-situ preparation nano-Ag particles in (2)
Enter wherein, 23-25h is impregnated in climatic chamber, bacteriostasis, preservation non-woven fabrics packaging material is made.
2. a kind of decatize heating in-situ preparation-immersion coating according to claim 1 prepares bacteriostasis, preservation non-woven fabrics packaging
The method of material, which is characterized in that six water of 13-14 part is added in the sulfuric acid solution for being 15% to 50-60 parts of concentration in step (1)
Ferric trichloride is closed, dissolves and acidic oxidation corrosive liquid is made.
3. a kind of decatize heating in-situ preparation-immersion coating according to claim 1 prepares bacteriostasis, preservation non-woven fabrics packaging
The method of material, which is characterized in that the preparation of loquat-leaf extract in step (2):
Loguat leaf is cleaned up, grind into powder after drying, is added into 4-6 parts of Loquat Leafs by solid-liquid ratio 1:20-30
Deionized water at 80-85 DEG C after heating leaching 70-90min, filters, is centrifugated 15-25min with the speed of 4000rpm,
Obtain loquat-leaf extract filtrate；
Mixed solution is made of the silver nitrate solution and loquat-leaf extract filtrate of 0.5mol/L；
Saturated steam conditions are 98 DEG C of temperature, relative humidity 98%.
4. a kind of decatize heating in-situ preparation-immersion coating according to claim 1 prepares bacteriostasis, preservation non-woven fabrics packaging
The method of material, which is characterized in that the content of tea polyphenols and chitosan is 1.5% in step (3), the temperature of climatic chamber
For 25 DEG C, relative humidity 50%.
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| CN112725930A (en) * | 2020-12-30 | 2021-04-30 | 安徽省天助纺织科技集团股份有限公司 | Fashionable environment-friendly cloth bag and preparation method thereof |
| CN113832725A (en) * | 2021-10-09 | 2021-12-24 | 福建冠泓工业有限公司 | Multi-time hydrophilic non-woven fabric and preparation method thereof |
| CN113832725B (en) * | 2021-10-09 | 2023-11-17 | 福建冠泓工业有限公司 | Multi-time hydrophilic non-woven fabric and preparation method thereof |
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Application publication date: 20190118 |