CN116985402A - Super-sealing mask production equipment and manufacturing method - Google Patents

Super-sealing mask production equipment and manufacturing method Download PDF

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Publication number
CN116985402A
CN116985402A CN202210443299.2A CN202210443299A CN116985402A CN 116985402 A CN116985402 A CN 116985402A CN 202210443299 A CN202210443299 A CN 202210443299A CN 116985402 A CN116985402 A CN 116985402A
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CN
China
Prior art keywords
adhesive
mask
roller
super
protective
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210443299.2A
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Chinese (zh)
Inventor
杨娟娟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202210443299.2A priority Critical patent/CN116985402A/en
Publication of CN116985402A publication Critical patent/CN116985402A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41H—APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
    • A41H43/00—Other methods, machines or appliances
    • A41H43/02—Handling garment parts or blanks, e.g. feeding, piling, separating or reversing
    • A41H43/0207—Stacking
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41H—APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
    • A41H43/00—Other methods, machines or appliances
    • A41H43/02—Handling garment parts or blanks, e.g. feeding, piling, separating or reversing
    • A41H43/025—Folding, unfolding or turning over
    • A41H43/0257—Folding
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41H—APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
    • A41H43/00—Other methods, machines or appliances
    • A41H43/04—Joining garment parts or blanks by gluing or welding ; Gluing presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7861—In-line machines, i.e. feeding, joining and discharging are in one production line

Abstract

The production equipment for super-close mask is composed of nine technological processes of feeding system, folding device, nose bridge strip embedding device, multilayer superimposed hot-press device, adhesive-close side adhesive-applying device, cover protection paper device, cutting roller cutting device, lacing ultrasonic welding device and package. The adhesive convex mold which is protruded is attached to the adhesive applying roller and has the same shape as the adhesive sealing edge, the adhesive applying roller is rolled and transferred to be coated on the non-woven fabric of the inner layer of the mask, and the protective paper enters the paper covering roller through the guide wheel, so that the protective paper is covered on the adhesive sealing edge to protect the adhesive sealing edge; the super-tight protective mask produced by the equipment and the manufacturing method has the advantages that the periphery of the mask close to the face is coated with a circle of sticky tight edges, so that the periphery of the mask is adhered to the face of a human body, the tight degree is excellent, the mask is not easy to slide when worn, and accidents of unsafe mask slipping and uncomfortable glasses fog caused by the lower jaw movements such as bad tight sealing between the mask and the face of the human body, ventilation, speaking and the like are avoided.

Description

Super-sealing mask production equipment and manufacturing method
Technical Field
The invention relates to the technical field of manufacturing equipment of masks for sanitary products, in particular to production equipment and a manufacturing method of a super-sealing mask.
Background
The mask manufacturing equipment is characterized in that the mask manufacturing equipment is used for manufacturing various masks with certain filtering performance on bacteria, viruses, dust particles, aerosol and the like through seven process steps of feeding a plurality of layers of mask manufacturing materials, folding, putting nose bridge strips into the mask, hot-pressing and synthesizing, ultrasonic welding ear bands or head bands, cutting and packaging finished products into boxes and the like. However, the mask produced by the existing mask manufacturing equipment is poor in adhesiveness and poor in quality, fine particles, spray, aerosol and bacterial viruses easily enter human respiratory organs from edge gaps, and the due protection effect of the mask on human health is reduced. It has been a long-felt need to manufacture a mask having good adhesion and satisfactory quality.
In order to improve the adhesiveness of the existing mask, the inventor has invented a super-adhesiveness protective mask (patent application number: 202220536960. X), which is to coat a circle of adhesiveness sealing edges on the periphery of a mask body, so that the periphery of the mask is adhered to the face of a human body, the adhesiveness is very good, the mask is not easy to slide, and accidents of unsafe mask slipping and uncomfortable glasses fogging caused by the mandibular movements of air leakage, ventilation, speaking and the like, which are caused by bad adhesiveness of the mask and the face of the human body, are avoided. However, there is currently no equipment for producing such super-seal protective masks in society.
There is an urgent need in society for a production facility and method that can produce such ultra-tight protective masks.
Disclosure of Invention
The invention aims to provide a manufacturing device and a manufacturing method of a super-close protective mask, which are used for solving the problem that the society provided in the background technology is urgently required to produce the super-close protective mask by using production equipment, so that the health of people is protected and the development economy is improved.
In order to achieve the above purpose, the present invention provides the following technical solutions: the manufacturing equipment and the manufacturing method of the super-sealing protective mask are composed of nine processes, such as a feeding system, a folding device, a nose bridge strip embedding device, a multi-layer superposition hot pressing device, a viscous sealing edge glue applying device, a cover protection paper device, a cutting roller cutting device, a lacing ultrasonic welding device, a packaging device and the like; the adhesive applying device of the adhesive sealing edge of the super-sealing protective mask manufacturing equipment consists of an adhesive supplying roller, an adhesive homogenizing roller, an adhesive applying roller, a guide wheel, an adhesive applying roller and the like, wherein the adhesive applying roller is attached with a convex adhesive applying convex die which has the same shape as the adhesive sealing edge, the adhesive supplying roller supplies medical hot melt adhesive to the adhesive homogenizing roller, the adhesive homogenizing roller is coated on the adhesive applying convex die of the adhesive applying roller in a rolling manner, the adhesive applying roller is coated on non-woven fabrics of the inner layer of the mask in a rolling manner, protective paper enters the adhesive applying roller through the guide wheel, the protective paper is covered on the adhesive sealing edge so as to ensure that the adhesive sealing edge cannot adhere and be stained with any other article before the mask is not worn, and finally, the adhesive applying convex die is cut by a cutting roller and a cutter, and the conveying roller is conveyed to ultrasonic welding laces, packaging processes and procedures, so that the super-sealing protective mask product is produced.
Preferably, the adhesive sealing edge adhesive applying device is characterized in that a circle of medical hot melt adhesive with the thickness of about 5 mm is applied to the periphery of the non-woven fabric of the inner layer of the mask, and the mask is adhered to the face when in use, so that the mask is prevented from falling off and sliding to cause non-sealing.
Preferably, the glue applying roller is fixedly provided with a glue applying male die, the spreading view of the glue applying male die is the same as the spreading view of the periphery of the mask, the periphery of the planar mask is rectangular, and the spreading view of the periphery of the folding three-dimensional KN95 mask is approximately C-shaped; the non-woven fabrics of the inner layer of the mask transfer-coating the medical hot melt adhesive on the adhesive-coating male die of the adhesive-coating roller on the non-woven fabrics of the inner layer of the mask along with the rotation of the adhesive-coating roller.
Preferably, the protective paper has a size of: the area of the adhesive sealing edge protection paper of the planar mask is consistent with that of the non-woven fabric of the inner layer of the mask; the adhesive sealing edge protective paper of the folding three-dimensional KN95 mask is clamped in the middle of the mask; the protective paper covers the adhesive edge and protects the adhesive edge.
Compared with the prior art, the invention has the following beneficial technical effects:
the mask with super-close structure can be produced by using the invention, a circle of sticky close edges are coated on the periphery of the mask close to the face, so that the periphery of the mask is adhered to the face of a human body, the close degree is super-good, the mask is not easy to slide when being worn, and accidents of unsafe mask slipping and uncomfortable glasses fog caused by the lower jaw movements such as bad close of the mask and the face of the human body, ventilation, speaking and the like are avoided.
Drawings
FIG. 1 is a schematic view of the components and process steps of the apparatus of the present invention.
Fig. 2 is a schematic view of the process, process technique and apparatus components of the present invention for producing the adhesive seal edge of a high-seal mask.
FIG. 3 is a schematic structural view of the adhesive bonding edge applying device of the present invention.
Fig. 4 is a pattern diagram of the present invention for applying adhesive edges to a flat mask.
Fig. 5 is a pattern diagram showing the application of adhesive edges to a three-dimensional KN9 mask according to the present invention.
Reference numerals illustrate. In fig. 1: 1. a feeding system; 2. a folding device; 3. a nose bridge strip embedding device; 4. a multi-layer lamination hot press device; 5. adhesive applying device for adhesive sealing edge; 6. covering a protective paper device; 7. a cutting roller cutting device; 8. a lacing ultrasonic welding device; 9. packaging; fig. 2 to 5: 1. a non-woven fabric on the outer layer of the mask; 2. melt-blowing the mask; 3. a non-woven fabric of the inner layer of the mask and an adhesive sealing edge; 4. a protective paper; 5. a conveying roller; 6. a slitting roller and a cutter; 7. a guide wheel; 8. a paper covering roller; 9. a glue applying roller; 10. a glue supply roller; 11. a glue homogenizing roller; 12. protecting the roll paper; 13. a gluing male die; 14. the plane mask is adhered and sealed; 15. the three-dimensional KN95 mask is adhered and sealed.
The specific implementation is as follows:
the following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that two embodiments are described only in some embodiments, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The first embodiment is as follows: plane super-sealing protective mask manufacturing equipment
Referring to fig. 1 to 5, the present invention provides a first technical solution as follows: the plane super-sealing protective mask manufacturing equipment consists of nine technical processes and components, such as a feeding system (I), a folding device (II), a nose bridge strip embedding device (III), a multi-layer lamination hot pressing device (IV), a viscous sealing edge glue applying device (five), a cover protection paper device (six), a cutting roller cutting device (seven), a lacing ultrasonic welding device (eight), a packaging device (nine) and the like; wherein the feeding system (I) is used for feeding the mask outer layer non-woven fabric (1), the mask melt-blown cloth (2), the mask inner layer non-woven fabric, the adhesive sealing edge (3) and the protective paper (4); the adhesive bonding edge adhesive applying device (five) is connected with the multi-layer lamination hot pressing device (four) in a process continuous mode, and the mask cloth after passing through the multi-layer lamination hot pressing device (four) is transmitted to the adhesive bonding edge adhesive applying device (five); the adhesive applying roller (9), the adhesive applying male die (13) and the protective roll paper (12), the guide wheel (7) and the paper covering roller (8) work in a linkage way, mask cloth which is formed by laminating and hot-pressing mask outer layer non-woven fabrics (1), mask melt-blown cloth (2) and mask inner layer non-woven fabrics and is transmitted by the multi-layer laminating hot-pressing device (four) is rolled and transferred by the adhesive applying roller (9) to be coated on the mask inner layer non-woven fabrics to form an adhesive sealing edge (3), the adhesive sealing edge is covered with a layer of protective paper (4) by the paper covering roller (8), a mask sheet is cut by the slitting roller and the cutter (6), and a hanging lug or a head wearing lacing is additionally arranged by the transmission roller (5).
The feeding system (I), the folding device (II), the nose bridge strip embedding device (III), the multi-layer superposition hot pressing device (IV), the cutting roller cutting device (seven), the lacing ultrasonic welding (eight), the packaging (nine) and other seven process procedures of the plane super-sealing protective mask manufacturing equipment are consistent with the currently known common technology. The adhesive bonding edge adhesive applying device (five) added after the process of producing the multi-layer laminated hot pressing device (four) of the mask works in such a way that a convex adhesive bonding convex die (13) with the same shape as the adhesive bonding edge is attached to the adhesive applying roller (9), the melted medical hot melt adhesive is uniformly attached to the surface of the adhesive bonding convex die through the adhesive homogenizing roller (11) by the adhesive supplying roller (10), and then is coated on the adhesive bonding convex die (13) of the adhesive applying roller (9) in a rolling way, and the adhesive applying roller (9) is rotationally transferred and coated on the non-woven fabric (3) of the inner layer of the mask; the protective paper (12) is fed into the paper covering roller (8) through the guide wheel (7), and the paper covering roller (8) covers the protective paper (12) on the adhesive sealing edge (3) so as to ensure that the adhesive sealing edge (3) cannot be adhered and stained with any other articles before the mask is not worn; the cutting roller cutting device (seven) is to move the cutting roller and the cutter (6) from the original working procedure, namely, the mask is not sliced after the multi-layer superposition hot pressing device (four), but directly enters the adhesive bonding edge adhesive applying device (five), the non-woven fabric (3) of the inner layer of the mask is coated with the thermosensitive adhesive and covered with a layer of protective paper (12), then the cutting roller and the cutter (6) are used for cutting the non-woven fabric into mask pieces, and the mask pieces are transmitted to the ultrasonic welding ear bands, the packaging process and the working procedure by the transmission roller (5) to produce the ultra-bonding protective mask product.
Further, in the adhesive applying device (V) with the adhesive sealing edge, a circle of medical hot melt adhesive with the thickness of about 5 mm is coated on the periphery of the near edge of the non-woven fabric of the inner layer of the mask, and the mask is adhered to the face of a person so as to prevent the mask from falling off and sliding to cause non-sealing.
Still further, the glue applying roller (9) is provided with a glue applying male die (13) with the width of about 5 mm, the spreading view of the glue applying male die (13) is the same as the peripheral spreading view of the mask, and the periphery of the planar mask is rectangular.
The second embodiment is as follows: equipment for manufacturing three-dimensional KN95 super-sealing protective mask
Still referring to fig. 1 to 5, the present invention provides a second technical solution as follows: the periphery of the folding three-dimensional KN95 mask produced by the three-dimensional KN95 super-sealing protective mask manufacturing equipment is unfolded to be approximately C-shaped (15), and other technical staff in the technical field can manufacture the three-dimensional KN95 super-sealing protective mask manufacturing equipment without creative labor and with reference to the first specific embodiment. However, the manufacturing equipment of the three-dimensional KN95 super-close protective mask and the manufacturing equipment of the plane super-close protective mask have a certain difference in known and common process and procedure, and mainly the adhesive bonding edge adhesive applying device (five) is adjusted from the middle bottom part to the middle upper part of the manufacturing equipment of the plane super-close protective mask at the position of the mask machine; the protective paper (12) is required to be die-cut according to the track of the adhesive sealing edge (15) of the three-dimensional KN95 mask, and the K-shaped sealing position of the KN95 mask is exposed for explanation.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.

Claims (4)

1. The manufacturing equipment and the manufacturing method of the super-sealing protective mask are composed of nine processes, such as a feeding system, a folding device, a nose bridge strip embedding device, a multi-layer superposition hot pressing device, a viscous sealing edge glue applying device, a cover protection paper device, a cutting roller cutting device, a lacing ultrasonic welding device, a packaging device and the like; the adhesive applying device for the adhesive sealing edge of the super-sealing protective mask manufacturing equipment is characterized by comprising an adhesive supplying roller, an adhesive homogenizing roller, an adhesive applying roller, a guide wheel, an adhesive applying roller and the like, wherein the adhesive applying roller is attached with a convex adhesive applying convex die which is the same as the adhesive sealing edge in shape, the adhesive supplying roller supplies medical hot melt adhesive to the adhesive homogenizing roller, the adhesive homogenizing roller is coated on the adhesive applying convex die of the adhesive applying roller in a rolling manner, the adhesive applying roller is coated on non-woven fabrics in the inner layer of the mask in a rolling manner, protective paper enters the adhesive applying roller through the guide wheel, and the protective paper is covered on the adhesive sealing edge so as to ensure that the adhesive sealing edge cannot adhere and be stained with any other article before the mask is not worn, and finally the adhesive applying convex die is cut and conveyed to ultrasonic welding belts, packaging processes and procedures by a cutting roller and a cutter, so that the super-sealing protective mask product is produced.
2. The manufacturing apparatus and manufacturing method of super-seal protective mask according to claim 1, wherein: the adhesive device is used for coating a circle of medical hot melt adhesive of about 5 mm on the periphery of the non-woven fabric of the inner layer of the mask, and the mask is adhered to the face when in use, so that the mask is prevented from falling off and sliding to cause non-adhesion.
3. The manufacturing apparatus and manufacturing method of super-seal protective mask according to claim 1, wherein: the gluing convex mould is fixed on the gluing roller, the spreading diagram of the gluing convex mould is the same as the spreading diagram of the periphery of the mask, the periphery of the planar mask is rectangular, and the spreading diagram of the periphery of the folding three-dimensional KN95 mask is nearly C-shaped; the non-woven fabrics of the inner layer of the mask transfer-coating the medical hot melt adhesive on the adhesive-coating male die of the adhesive-coating roller on the non-woven fabrics of the inner layer of the mask along with the rotation of the adhesive-coating roller.
4. The manufacturing apparatus and manufacturing method of super-seal protective mask according to claim 1, wherein: the protective paper has the following size: the area of the adhesive sealing edge protection paper of the planar mask is consistent with that of the non-woven fabric of the inner layer of the mask; the adhesive sealing edge protective paper of the folding three-dimensional KN95 mask is clamped in the middle of the mask; the protective paper covers the adhesive edge and protects the adhesive edge.
CN202210443299.2A 2022-04-26 2022-04-26 Super-sealing mask production equipment and manufacturing method Pending CN116985402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210443299.2A CN116985402A (en) 2022-04-26 2022-04-26 Super-sealing mask production equipment and manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210443299.2A CN116985402A (en) 2022-04-26 2022-04-26 Super-sealing mask production equipment and manufacturing method

Publications (1)

Publication Number Publication Date
CN116985402A true CN116985402A (en) 2023-11-03

Family

ID=88521937

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210443299.2A Pending CN116985402A (en) 2022-04-26 2022-04-26 Super-sealing mask production equipment and manufacturing method

Country Status (1)

Country Link
CN (1) CN116985402A (en)

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