CN111411514A - Non-woven fabric and production process thereof - Google Patents
Non-woven fabric and production process thereof Download PDFInfo
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- CN111411514A CN111411514A CN202010270789.8A CN202010270789A CN111411514A CN 111411514 A CN111411514 A CN 111411514A CN 202010270789 A CN202010270789 A CN 202010270789A CN 111411514 A CN111411514 A CN 111411514A
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- sodium bicarbonate
- lithospermum extract
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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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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/18—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/20—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing organic materials
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/40—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing ingredients of undetermined constitution or reaction products thereof, e.g. plant or animal extracts
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/46—Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
- D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting
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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
- D06M11/73—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 carbon or compounds thereof
- D06M11/76—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 carbon or compounds thereof with carbon oxides or carbonates
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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
- D06M13/322—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 nitrogen
- D06M13/402—Amides imides, sulfamic 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
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/10—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing inorganic materials
- A61L2300/102—Metals or metal compounds, e.g. salts such as bicarbonates, carbonates, oxides, zeolites, silicates
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/20—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing organic materials
- A61L2300/204—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing organic materials with nitrogen-containing functional groups, e.g. aminoxides, nitriles, guanidines
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/20—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing organic materials
- A61L2300/30—Compounds of undetermined constitution extracted from natural sources, e.g. Aloe Vera
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
- A61L2300/404—Biocides, antimicrobial agents, antiseptic agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
- A61L2300/45—Mixtures of two or more drugs, e.g. synergistic mixtures
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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
- D06M2101/40—Fibres of carbon
Abstract
The invention discloses a non-woven fabric, a production process thereof and a baby diaper made of the non-woven fabric, belonging to the technical field of light industry, wherein sodium bicarbonate and lithospermum extract are attached to the surface of the non-woven fabric, and the preparation method comprises the following steps: preparing an aqueous solution, and mixing water, sodium bicarbonate and the lithospermum extract according to the mass ratio of (90-110) to (3-5) to 1 to prepare the aqueous solution; atomizing and spraying, namely atomizing and spraying the prepared water aqua on the carded and molded mesh; and (4) performing heat seal evaporation molding. The non-woven fabric can dissolve effective components for inhibiting fungi and eliminating local skin inflammation after meeting water, and improves the safety and comfort of the non-woven fabric to the skin of a baby. The sodium bicarbonate and the lithospermum extract can generate a synergistic effect, on one hand, uric acid in urine of the baby can be neutralized, so that the urine becomes alkalescent, stimulation to skin of the baby is avoided, and on the other hand, the lithospermum extract can be dissolved under the alkalescent condition and has the antibacterial and anti-inflammatory effects.
Description
Technical Field
The invention belongs to the technical field of light industry, and particularly relates to a non-woven fabric and a production process of the non-woven fabric.
Background
Nonwoven fabrics (also known as Non-Woven fabrics) are made of oriented or random fibers. It is called a cloth because of its appearance and certain properties. The non-woven fabric has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity, no stimulation, rich color, low price, recycling and the like, and is produced by adopting polypropylene (pp) granules as a raw material through a continuous one-step method of high-temperature melting, spinning, lapping and hot-pressing coiling. Since it is a fabric formed without spinning a woven cloth, the production cost thereof is greatly reduced.
Diapers are commonly used by infants and generally consist of three main components, a surface coating layer, an absorbent core layer and a backing fabric. The surface coating layer is tightly attached to the body of a baby, and needs to enable urine to quickly permeate and effectively prevent the urine from permeating back, so that the surface layer of the diaper is kept dry and comfortable. To meet these basic requirements, the surface coating of the diaper is usually made of a nonwoven fabric. However, the existing non-woven fabrics are easy to breed fungi, and can stimulate the skin of the infant, so that the skin of the infant can be inflamed.
Disclosure of Invention
In order to solve the above problems of the prior art, a first object of the present invention is to provide a nonwoven fabric which can dissolve effective components for inhibiting fungi and eliminating local inflammation of skin after being exposed to water, thereby improving safety and comfort of the nonwoven fabric to the skin of a baby.
The invention discloses a non-woven fabric, wherein sodium bicarbonate and lithospermum extract are attached to the surface of the non-woven fabric. The sodium bicarbonate can neutralize uric acid in the urine of the infant, so that the urine becomes alkalescent, and the skin of the infant is prevented from being stimulated. Meanwhile, the lithospermum extract can be dissolved under alkalescent conditions and has the antibacterial and anti-inflammatory effects.
Preferably, the mass ratio of the sodium bicarbonate to the lithospermum extract is (3-5) to 1. In the proportion, the lithospermum extract can play the best antibacterial and anti-inflammatory effects.
Preferably, panthenol is further adhered to the surface of the non-woven fabric. Panthenol can be converted into pantothenic acid after contacting skin, and can resist inflammatory reaction of skin and accelerate skin repair.
Furthermore, the mass ratio of the sodium bicarbonate to the lithospermum extract to the panthenol is (3-5) to 1 to (0.3-0.7). In the proportion, the lithospermum extract and the panthenol can generate a coordinating effect and have the optimal antibacterial and anti-inflammatory effects.
Furthermore, the mass ratio of the fiber body of the non-woven fabric to the lithospermum extract is (250-300) to 1. The sodium bicarbonate and the lithospermum extract are combined with polypropylene fibers in the form of small molecular crystals and are attached to the surface of the non-woven fabric, and when the baby urine soaks, the sodium bicarbonate and the lithospermum extract can be dissolved into the urine. The optimum effect can be obtained by the sodium bicarbonate and the lithospermum extract in the ratio because the non-woven fabric is only used as the material of the surface coating layer.
Preferably, the fiber body of the non-woven fabric mainly comprises ES composite short fibers and silver-loaded activated carbon fibers, and the mass ratio of the ES composite short fibers to the silver-loaded activated carbon fibers is (45-55) to 1. The silver-loaded activated carbon fiber has good adsorption effect on microorganisms, and the antibacterial effect is further improved.
The second purpose of the invention is to disclose the preparation method of the non-woven fabric, which comprises the following steps: preparing an aqueous solution, and mixing water, sodium bicarbonate and the lithospermum extract according to the mass ratio of (90-110) to (3-5) to 1 to prepare the aqueous solution; atomizing and spraying, namely atomizing and spraying the prepared water aqua on the carded and molded mesh; and (4) performing heat seal evaporation molding. Compared with the prior art, the non-woven fabric adopts a preparation process of a heat-seal non-woven fabric, and the difference is that after the mesh fabric is carded and molded and before the mesh fabric enters a hot air drying machine, the prepared water aqua is sprayed on the mesh fabric in an atomizing mode, after the mesh fabric is dried and bonded, water molecules are evaporated, and active ingredients in the water aqua are combined with fibers in a small-molecule crystallization mode to prepare the non-woven fabric special for the baby diapers, which has the effects of inhibiting fungi and eliminating local skin inflammation.
Preferably, in the atomization spraying step, the fiber body of the non-woven fabric has a gram weight of 22g/m2The addition amount of the water agent is 8ml/m2The temperature of the water aqua is 20-25 ℃, and the hot rolling forming effect can be influenced by overhigh or overlow temperature.
Further, the step of preparing the water aqua also comprises panthenol, wherein the mass ratio of the water to the sodium bicarbonate to the lithospermum extract to the panthenol is (90-110) to (3-5) to 1 to (0.3-0.7); in the atomization spraying step, a fiber body of the mesh cloth mainly comprises ES composite short fibers and silver-loaded activated carbon fibers, and the mass ratio of the ES composite short fibers to the silver-loaded activated carbon fibers is (45-55) to 1.
Preferably, in the step of preparing the aqueous solution, the water is demineralized water.
The third purpose of the invention is to disclose a diaper which is made of the non-woven fabric.
The invention has the beneficial effects that:
1. the non-woven fabric disclosed by the invention can dissolve effective components for inhibiting fungi and eliminating local skin inflammation after meeting water, and the safety and the comfort of the non-woven fabric on the skin of a baby are improved.
2. The sodium bicarbonate and the lithospermum extract can generate a synergistic effect, on one hand, uric acid in urine of the baby can be neutralized, so that the urine becomes alkalescent, stimulation to skin of the baby is avoided, and on the other hand, the lithospermum extract can be dissolved under the alkalescent condition and has the antibacterial and anti-inflammatory effects.
3. Compared with the prior art, the non-woven fabric adopts a preparation process of a heat-seal non-woven fabric, and the difference is that after the mesh fabric is carded and molded and before the mesh fabric enters a hot air drying machine, the prepared water aqua is sprayed on the mesh fabric in an atomizing mode, after the mesh fabric is dried and bonded, water molecules are evaporated, and active ingredients in the water aqua are combined with fibers in a small-molecule crystallization mode to prepare the non-woven fabric special for the baby diapers, which has the effects of inhibiting fungi and eliminating local skin inflammation.
4. The raw material adopted by the non-woven fabric is PP, the surface of the non-woven fabric cannot be well infiltrated by the water aqua due to the hydrophobic property of the non-woven fabric, and the water aqua can be uniformly dispersed on the fiber surface of the non-woven fabric by adopting an atomization spraying process, so that the non-woven fabric is prevented from being agglomerated together.
5. After the screen cloth is carded and molded, atomization spraying is carried out before the screen cloth enters a hot air dryer, two purposes are achieved, moisture in the water aqua can be dried, and the screen cloth can be subjected to thermocuring molding. Compared with the method for removing the effective components on the finished non-woven fabric, on one hand, the preparation process can be simplified, and the cost is reduced; on the other hand, the performance reduction caused by multiple times of high temperature of the non-woven fabric can be avoided.
6. The diaper made of the non-woven fabric can dissolve effective components for inhibiting fungi and eliminating local skin inflammation after a baby urinates, and the safety and the comfort of the baby skin are improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Example 1:
in the nonwoven fabric of the present embodiment, sodium bicarbonate and lithospermum erythrorhizon extract are adhered to the surface of the nonwoven fabric. The mass ratio of the non-woven fabrics to the sodium bicarbonate to the lithospermum extract is 275: 4: 1. The sodium bicarbonate attached to the surface of the non-woven fabric can neutralize uric acid in urine of the infant, so that the urine becomes weak alkaline, and skin irritation of the infant is avoided. Meanwhile, the lithospermum extract can be dissolved under alkalescent conditions and has the antibacterial and anti-inflammatory effects.
The preparation method of this example is as follows:
firstly, preparing a water aqua, and mixing softened water, sodium bicarbonate and the lithospermum extract according to the mass ratio of 100: 4: 1 to prepare the water aqua. After the sodium bicarbonate is dissolved in the softened water, the solution becomes alkalescent, and the lithospermum extract can be well dissolved.
The most important step is atomization spraying, and the prepared water aqua is atomized and sprayed on the carded and formed mesh cloth. The fiber bulk gram weight of the nonwoven fabric is 22g/m2The addition amount of the water agent is 8ml/m2The temperature of the water agent is controlled to be 20-25 ℃. Immediately after spraying, the next step of heat seal evaporation forming is carried out. When the temperature of the aqueous solution is too high, the transpiration is too fast, and the vaporization volume of water is too fast to expand, so that the adhesion force among fibers is reduced; however, the low temperature of the water aqua can cause the heat quantity taken away by transpiration to be too much, so that the heat sealing temperature can not reach the best hot rolling condition, and the hot rolling forming effect can also be influenced. Laying the fiber to 22g/m2On the one hand, is suitable for producing nonwoven fabrics suitable for baby diapers, and on the other hand, provides sufficient fiber attachment surface for atomized water aqua. The spraying amount of the water aqua which can be borne by the non-woven fabric with the thickness is 8ml/m2Above this amount, the atomized droplets tend to agglomerate into large droplets, which on the one hand may affect the uniformity of dispersion, and on the other hand, the large droplets tend to penetrate the nonwoven fabric under the action of gravity and fall down onto the carrying surface, resulting in waste of the active ingredient. In the actual production process, the atomization spraying device is installed at the inlet end of the hot air dryer, after the non-woven fabric is carded into a net, atomization spraying is carried out just before the non-woven fabric enters the hot air dryer, and the stability of the conveying process is ensured, so that atomized liquid drops just adsorbed on the surface of the fiber are evaporated in the fastest time, and crystals with limited components are left on the surface of the fiber.
The nonwoven fabric of the present embodiment is obtained after heat-seal evaporation molding.
Experiments prove that the non-woven fabric of the embodiment can dissolve the sodium bicarbonate and the lithospermum extract when contacting water or urine of infants, and has the effects of inhibiting fungi and eliminating local skin inflammation.
Example 2:
in addition to example 1, panthenol was also attached to the surface of the nonwoven fabric. The mass ratio of the non-woven fabric to the sodium bicarbonate to the lithospermum extract to the panthenol is 275: 4: 1: 0.5. The sodium bicarbonate attached to the surface of the non-woven fabric can neutralize uric acid in urine of the infant, so that the urine becomes weak alkaline, and skin irritation of the infant is avoided. Meanwhile, the lithospermum extract can be dissolved under alkalescent conditions and has the antibacterial and anti-inflammatory effects. Panthenol can be converted into pantothenic acid after contacting skin, and can resist inflammatory reaction of skin and accelerate skin repair. The baby diaper made of the non-woven fabric is more suitable for babies with eczema or red and swollen skin, and is beneficial to eliminating inflammation and accelerating skin repair.
The preparation method of this example was the same as in example 1 except that the formulation was adjusted.
Example 3:
in addition to example 2, the following adjustment was made in selecting a fiber material of the nonwoven fabric in order to further enhance the antibacterial performance of the nonwoven fabric. Micro silver-loaded activated carbon fiber is added into 100% of the original ES composite short fiber, and the specific adding proportion is that the mass ratio of the ES composite short fiber to the silver-loaded activated carbon fiber is 100: 2. The ES composite short fiber used in the production has the diameter of 2.2D, the silver-loaded activated carbon fiber has the diameter of 15-20nm, the specific surface area of the activated carbon fiber is 1000-1500m2/g on average, and the ES composite short fiber has good adsorption effect on microorganisms and can further inhibit the propagation of fungi.
The preparation method of this example is the same as that of example 2 except that the two materials are mixed uniformly before web formation.
Comparative example 1:
pure ES composite short fibers are combed into a net and directly enter a hot air dryer for hot rolling forming without atomization spraying treatment. The process conditions for carding, web formation and hot-air drying hot-roll forming are the same as those of example 1.
The nonwoven fabrics of examples 1, 2, and 3 had substantially the same structural strength and air permeability as the nonwoven fabric of comparative example 1. However, the nonwoven fabric of comparative example 1 had no antibacterial and anti-inflammatory functions.
Comparative example 2:
in the nonwoven fabric of this comparative example, sodium bicarbonate was adhered to the surface of the nonwoven fabric. The mass ratio of the non-woven fabric to the sodium bicarbonate is 275: 4. The preparation method of this comparative example was the same as example 1 except that the formulation was adjusted.
The sodium bicarbonate attached to the surface of the non-woven fabric can neutralize uric acid in urine of the infant, so that the urine becomes weak alkaline, and skin irritation of the infant is avoided. However, comparative example 2 does not have an effective antibacterial and anti-inflammatory effect as compared to example 1.
Comparative example 3:
in the nonwoven fabric of this comparative example, the arnebia euchroma (gromwell) root extract was adhered to the surface of the nonwoven fabric. The mass ratio of the non-woven fabrics to the lithospermum extract is 275: 1.
Since the lithospermum extract is insoluble in water and cannot be sprayed onto the surface of the non-woven fabric by means of preparing an aqueous solution, the powder of the lithospermum extract is directly sprinkled on the prepared non-woven fabric. The gromwell extract powder is easy to be lifted and dropped in the transportation process because the direct bonding force between the gromwell extract and the fiber is weak.
Experiments prove that the lithospermum extract cannot be dissolved and cannot exert the antibacterial and anti-inflammatory effects when the non-woven fabric in the comparative example 3 is contacted with water or urine of infants.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (10)
1. A nonwoven fabric, characterized in that: the surface of the non-woven fabric is adhered with sodium bicarbonate and lithospermum extract.
2. The nonwoven fabric according to claim 1, characterized in that: the mass ratio of the sodium bicarbonate to the lithospermum extract is (3-5) to 1.
3. The nonwoven fabric according to claim 1, characterized in that: panthenol is further attached to the surface of the non-woven fabric.
4. The nonwoven fabric according to claim 3, characterized in that: the mass ratio of the sodium bicarbonate to the lithospermum extract to the panthenol is (3-5) to 1 to (0.3-0.7).
5. The nonwoven fabric according to claim 2 or 4, characterized in that: the mass ratio of the fiber body of the non-woven fabric to the lithospermum extract is (250-300) to 1.
6. The nonwoven fabric according to claim 5, characterized in that: the fiber body of the non-woven fabric mainly comprises ES composite short fibers and silver-loaded activated carbon fibers, and the mass ratio of the ES composite short fibers to the silver-loaded activated carbon fibers is (45-55) to 1.
7. A method of preparing a nonwoven fabric as claimed in any of claims 1 to 6, characterized by comprising the steps of:
preparing an aqueous solution, and mixing water, sodium bicarbonate and the lithospermum extract according to the mass ratio of (90-110) to (3-5) to 1 to prepare the aqueous solution;
atomizing and spraying, namely atomizing and spraying the prepared water aqua on the carded and molded mesh;
and (4) performing heat seal evaporation molding.
8. The method of claim 7, wherein: in the atomization spraying step, the gram weight of the fiber body of the non-woven fabric is 22g/m2The addition amount of the water agent is 8ml/m2The temperature of the aqueous solution is 20-25 ℃.
9. The production method according to claim 7 or 8, characterized in that: in the step of preparing the water aqua, panthenol is further included, and the mass ratio of the water to the sodium bicarbonate to the lithospermum extract to the panthenol is (90-110) to (3-5) to 1 to (0.3-0.7); in the atomization spraying step, a fiber body of the mesh cloth mainly comprises ES composite short fibers and silver-loaded activated carbon fibers, and the mass ratio of the ES composite short fibers to the silver-loaded activated carbon fibers is (45-55) to 1.
10. A diaper characterized by being made of the nonwoven fabric according to any one of claims 1 to 6.
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| CN202010270789.8A CN111411514A (en) | 2020-04-08 | 2020-04-08 | Non-woven fabric and production process thereof |
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Application publication date: 20200714 |