CN115067591A - Mask with filter element and preparation method thereof - Google Patents

Mask with filter element and preparation method thereof Download PDF

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Publication number
CN115067591A
CN115067591A CN202210834650.0A CN202210834650A CN115067591A CN 115067591 A CN115067591 A CN 115067591A CN 202210834650 A CN202210834650 A CN 202210834650A CN 115067591 A CN115067591 A CN 115067591A
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CN
China
Prior art keywords
parts
mask
layer
weight
filter element
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Pending
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CN202210834650.0A
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Chinese (zh)
Inventor
王楠
徐宏忠
姜泽昆
王红莉
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Shandong Kaidilan Technology Co ltd
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Shandong Kaidilan Technology Co ltd
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Priority to CN202210834650.0A priority Critical patent/CN115067591A/en
Publication of CN115067591A publication Critical patent/CN115067591A/en
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    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1192—Protective face masks, e.g. for surgical use, or for use in foul atmospheres with antimicrobial agent
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/02—Layered materials
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/30—Antimicrobial, e.g. antibacterial
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/12—Ketones
    • A61K31/122—Ketones having the oxygen directly attached to a ring, e.g. quinones, vitamin K1, anthralin
    • A61K31/125—Camphor; Nuclear substituted derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
    • A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
    • A61K35/55—Glands not provided for in groups A61K35/22 - A61K35/545, e.g. thyroids, parathyroids or pineal glands
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
    • A61K36/18—Magnoliophyta (angiosperms)
    • A61K36/185—Magnoliopsida (dicotyledons)
    • A61K36/48—Fabaceae or Leguminosae (Pea or Legume family); Caesalpiniaceae; Mimosaceae; Papilionaceae
    • A61K36/484—Glycyrrhiza (licorice)
    • A—HUMAN NECESSITIES
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    • A61K36/18—Magnoliophyta (angiosperms)
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    • A61K36/18—Magnoliophyta (angiosperms)
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    • A61K36/18—Magnoliophyta (angiosperms)
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    • A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
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    • B32B38/08—Impregnating
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B32B5/265—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer
    • B32B5/266—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers
    • B32B5/268—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers characterised by at least one non-woven fabric layer that is a melt-blown fabric
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D2500/00—Materials for garments
    • A41D2500/30—Non-woven
    • 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
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/04—Cellulosic plastic fibres, e.g. rayon
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment

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Abstract

The invention discloses a mask with a filter element and a preparation method thereof, belonging to the technical field of masks.

Description

Mask with filter element and preparation method thereof
Technical Field
The invention belongs to the technical field of masks, and particularly relates to a mask with a filter element and a preparation method of the mask.
Background
The mask is a hygiene and epidemic prevention article, is generally worn at the mouth and nose part for filtering air entering the mouth and nose so as to achieve the effect of blocking harmful gas, smell, spray, virus and other substances, is made of gauze or paper and other materials, has a certain filtering effect on air entering the lung, and has a very good effect when the mask is worn in respiratory infectious diseases and works in environments polluted by dust and the like. The mask may be classified into an air filtering type mask and an air supplying type mask.
Present gauze mask filters dust and virus through its inside various filter core bed of cloth usually, and the gauze mask has the gas permeability, but still can cause the hindrance of certain degree to breathing, especially in the summer that the temperature is higher, wears the in-process of gauze mask for a long time, can lead to the person of wearing to breathe not smooth, and facial oral area high temperature leads to its state to be dim, the comfort level lacks to some extent.
Disclosure of Invention
The invention aims to provide a mask with a filter element and a preparation method thereof, and aims to solve the problems that the existing mask in the background art still causes certain obstruction to breathing although the existing mask has air permeability, and particularly, in summer with high temperature, the breathing of a wearer is not smooth, the temperature of the face and the mouth is too high, the state of the wearer is faint and the comfort degree is poor in the process of wearing the mask for a long time.
In order to achieve the purpose, the invention provides the following technical scheme: a mask with a filter element and a preparation method thereof comprise an isolation layer non-woven fabric.
And (4) fusion-spraying the filter layer.
And (4) an antibacterial layer.
And (4) a skin-friendly layer non-woven fabric.
The permeable layer is used for releasing the components of the heat-clearing and summer-heat-relieving medicament.
The release layer is used for emitting the components of the refreshing medicament.
As a preferable embodiment, the antibacterial layer is a CA nanofiber film.
As a preferred embodiment, the permeation layer is disposed between the antibacterial layer and the non-woven fabric of the skin-friendly layer, and the release layer is attached to the permeation layer and disposed between the antibacterial layer and the non-woven fabric of the skin-friendly layer.
A method for preparing a mask with a filter element comprises the following steps:
step 1, preparing a permeable layer:
taking 8-10 parts of mint, 2-3 parts of liquorice, 5-8 parts of fresh lotus leaves and 5-8 parts of fresh bamboo leaves.
And placing the weighed materials into crushing equipment in sequence, and classifying and storing the materials for later use after crushing.
Weighing 10 parts by weight of mint, 3 parts by weight of liquorice, 5 parts by weight of fresh lotus leaf and 5 parts by weight of fresh bamboo leaf, sequentially placing the components into a container according to a ratio, adding a proper amount of clear water, heating the container for decoction for 10-15 minutes, fully filtering the prepared liquid medicine after the decoction is finished, and storing the liquid medicine into the container for later use.
And (3) soaking the non-woven fabric into the prepared liquid medicine for 3-5 hours, and drying the non-woven fabric after soaking to prepare a permeable layer.
Step 2, preparing a release layer:
taking 5-6 parts of tea, 3-5 parts of musk, 1-3 parts of camphor and 2-3 parts of mint.
Weighing 5 parts of tea, 3 parts of musk, 2 parts of camphor and 2 parts of mint, sequentially and respectively placing the weighed materials into crushing equipment for crushing, placing the crushed materials into grinding equipment after crushing, and fully grinding to obtain medicinal powder.
Pouring the medicinal powder prepared in the steps into stirring equipment, adding a proper amount of clear water, heating, fully stirring, and fully stirring to obtain a paste mixed solution.
Taking a proper amount of non-woven fabric, uniformly spraying the pasty mixed solution into the non-woven fabric, and then drying to obtain the release layer.
And 3, enabling various middle layer cloth for preparing the mask to pass through a material guide port, a front welding wheel, a feeding wheel, a folding steering mechanism, a feeding wheel and a rear cutter wheel which are aligned to mask production equipment to a discharging mechanism.
And 4, adjusting the welding position of the front welding wheel, the folding forming position, the welding finished product position of the welding wheel, the finished product forming position of the rear cutter, the pressure between the welding wheel and the welding head and the distance between the cutter wheel and the cutter drill.
And 5, preparing a mask opening, packaging the mask opening, and sealing the opening by using a sealing machine.
In a preferred embodiment, in the step 2, the heating temperature is controlled to be in the range of 90-100 ℃, and the stirring time is 10-15 minutes.
As a preferred embodiment, in the step 1 and the step 2, the weighed materials are cleaned in advance by an ultrasonic cleaning machine, and are dried and then processed.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, by preparing the permeable layer and the release layer to be added into the mask, the medicine components for clearing away summer heat and refreshing brain can be slowly and hierarchically released when the mask is worn, so that adverse effects caused by high temperature are relieved in the process of wearing the mask at high temperature, a wearer can breathe more smoothly, a good mental state is guaranteed to be kept, the antibacterial property of the mask is better under the synergistic action of the antibacterial layer of the CA nanofiber membrane, and the comfort level and safety of the mask when the mask is worn are effectively improved through the design of the mask.
Drawings
FIG. 1 is a schematic cross-sectional view of the structure of the present invention.
In the figure: 1. an isolation layer non-woven fabric; 2. the filter layer is melt-blown; 3. an antimicrobial layer; 4. a permeable layer; 5. a release coat; 6. and (4) a skin-friendly layer non-woven fabric.
Detailed Description
The present invention will be further described with reference to the following examples.
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are within the scope of the claimed invention.
Referring to fig. 1, the present invention provides a mask with a filter element, comprising:
isolation layer non-woven fabric 1
And the filter layer is melt-blown with cloth 2.
And an antibacterial layer 3.
And a skin-friendly layer non-woven fabric 4.
And the permeating layer 5 is used for releasing the components of the heat-clearing and summer-heat-relieving medicament.
The release layer 6 is used for emitting the components of the refreshing medicament.
Example 1
Preparing a permeable layer:
taking 8-10 parts by weight of hawthorn, 2-3 parts by weight of roasted malt, 5-8 parts by weight of radix ophiopogonis and 5-8 parts by weight of fresh bamboo leaves;
placing the weighed materials into crushing equipment in sequence, crushing the materials and then storing the materials in a classified manner for later use;
weighing 10 parts by weight of hawthorn, 3 parts by weight of roasted malt, 5 parts by weight of radix ophiopogonis and 5 parts by weight of fresh bamboo leaves, sequentially putting the hawthorn, the roasted malt, the radix ophiopogonis and the fresh bamboo leaves into a container according to a ratio, adding a proper amount of clear water, heating the container for decoction for 10-15 minutes, fully filtering the prepared liquid medicine after the decoction is finished, and storing the liquid medicine into the container for later use;
soaking the non-woven fabric in the obtained medicinal liquid for 3-5 hr, and drying to obtain a permeable layer.
When the permeable layer prepared by the steps is used in the preparation and mask, the permeable layer has certain faint scent while playing the effects of clearing heat and relieving summer heat, and can be made into the mask, so that the mask is more comfortable when being worn.
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 (6)

1. A mask with a filter element, comprising:
an isolation layer non-woven fabric;
the filter layer is melt-blown;
an antimicrobial layer;
a skin-friendly layer non-woven fabric;
the permeable layer is used for releasing the components of the heat-clearing and summer-heat-relieving medicament;
the release layer is used for emitting the components of the refreshing medicament.
2. The mask with the filter element according to claim 1, wherein: the antibacterial layer adopts a CA nanofiber membrane.
3. The mask with the filter element according to claim 1, wherein: the permeable formation sets up between antibiotic layer and close skin layer non-woven fabrics, release layer and permeable formation are laminated mutually, set up between antibiotic layer and close skin layer non-woven fabrics.
4. A method for manufacturing a mask with a filter element, the mask with the filter element according to claim 1, comprising the steps of:
step 1, preparing a permeable layer:
taking 8-10 parts by weight of mint, 2-3 parts by weight of liquorice, 5-8 parts by weight of fresh lotus leaves and 5-8 parts by weight of fresh bamboo leaves;
placing the weighed materials into crushing equipment in sequence, crushing the materials and then storing the materials in a classified manner for later use;
weighing 10 parts by weight of mint, 3 parts by weight of liquorice, 5 parts by weight of fresh lotus leaf and 5 parts by weight of fresh bamboo leaf, sequentially placing the components into a container according to a ratio, adding a proper amount of clear water, heating the container for decoction, wherein the decoction time is 10-15 minutes, fully filtering the prepared liquid medicine after the decoction is finished, and storing the liquid medicine into the container for later use;
soaking the non-woven fabric in the prepared liquid medicine for 3-5 hours, and drying the non-woven fabric after soaking to prepare a permeable layer;
step 2, preparing a release layer:
taking 5-6 parts of tea, 3-5 parts of musk, 1-3 parts of camphor and 2-3 parts of mint;
weighing 5 parts of tea, 3 parts of musk, 2 parts of camphor and 2 parts of mint, sequentially and respectively placing the weighed materials into crushing equipment for crushing, placing crushed materials into grinding equipment after crushing, and fully grinding to obtain medicinal powder;
pouring the medicinal powder prepared in the steps into stirring equipment, adding a proper amount of clear water, heating, fully stirring, and fully stirring to obtain a paste mixed solution;
taking a proper amount of non-woven fabric, uniformly spraying the pasty mixed solution into the non-woven fabric, and then drying to obtain a release layer;
step 3, enabling various middle layer cloth for preparing the mask to penetrate through a material guide opening, a front welding wheel, a feeding wheel, a folding steering mechanism, a feeding wheel and a rear cutter wheel which are aligned with mask production equipment to a discharging mechanism;
step 4, adjusting the welding position of the front welding wheel, the folding forming position, the welding finished product position of the welding wheel, the finished product forming position of the rear cutter, the pressure between the welding wheel and the welding head and the distance between the cutter wheel and the cutter drill;
and 5, preparing a mask opening, packaging the mask opening, and sealing the opening by using a sealing machine.
5. The method for preparing a mask with a filter element according to claim 4, wherein the method comprises the following steps: in the step 2, the heating temperature is controlled within the range of 90-100 ℃, and the stirring time is 10-15 minutes.
6. The method for preparing a mask with a filter element according to claim 4, wherein the method comprises the following steps: in the step 1 and the step 2, all the weighed materials need to be cleaned in advance by using an ultrasonic cleaner, and are dried and then treated.
CN202210834650.0A 2022-07-14 2022-07-14 Mask with filter element and preparation method thereof Pending CN115067591A (en)

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CN202210834650.0A CN115067591A (en) 2022-07-14 2022-07-14 Mask with filter element and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210834650.0A CN115067591A (en) 2022-07-14 2022-07-14 Mask with filter element and preparation method thereof

Publications (1)

Publication Number Publication Date
CN115067591A true CN115067591A (en) 2022-09-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
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