CN109529215A - The manufacturing method of the foldable mask in three faces with depth fabric - Google Patents
The manufacturing method of the foldable mask in three faces with depth fabric Download PDFInfo
- Publication number
- CN109529215A CN109529215A CN201810078086.8A CN201810078086A CN109529215A CN 109529215 A CN109529215 A CN 109529215A CN 201810078086 A CN201810078086 A CN 201810078086A CN 109529215 A CN109529215 A CN 109529215A
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- CN
- China
- Prior art keywords
- filter
- woven fabrics
- layer
- synthetic fiber
- fabric
- 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.)
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Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/06—Mouthpieces; Nose-clips
-
- 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
- A41D13/1107—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
- A41D13/1115—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a horizontal pleated pocket
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
- A62B18/025—Halfmasks
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
- A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
-
- 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
Abstract
The present invention provides a kind of manufacturing method of the foldable mask in three faces, comprising: by the lower surface of hot melt adhesive applicator to cotton fabric to form resin layer；By non-woven fabrics of synthetic fiber attachment on the resin layer to form adhesive auxiliary non-woven fabrics of synthetic fiber layer；Adhesive auxiliary non-woven fabrics of synthetic fiber layer, resin layer and cotton fabric are stacked gradually to prepare the lamilate of three-decker；Lamilate is placed on both the upper rim of the inner surface of upper filter and the lower edge portion of inner surface of lower filter, so that the adhesive auxiliary non-woven fabrics of synthetic fiber layer of lamilate is contacted with both upper filter and lower filter；Non-woven fabrics of synthetic fiber layer is assisted with ultrasonic irradiation adhesive at the temperature or higher temperature of the fusing point for the synthetic fibers for including in adhesive auxiliary non-woven fabrics of synthetic fiber layer, will include that the depth fabric of cotton fabric and resin layer is attached to both upper rim and the lower edge portion of lower filter inner surface of upper filter inner surface.
Description
Related application
This application claims the South Korea patent application No.10-2017- submitted to Korean Intellectual Property Office on the 22nd of September in 2017
0122240 priority, being incorporated by for the South Korea patent application are herein incorporated by reference.
Technical field
The present invention relates to the manufacturing methods of the foldable mask in three faces with depth fabric (in-depth fabric), more
Easy to carry and storage three with depth fabric are manufactured with low manufacturing cost by simple technique more particularly to a kind of
The method of the foldable mask in face, the mask can be in close contact along the facial curved surface (facial curvature) of wearer,
To improve the strainability to fine dust, while providing good wearing sense (sense of touch) and appearance.
As used in the disclosure, term " the foldable mask in three faces with depth fabric " refers to following mask,
Comprising: as shown in Figures 2 and 3, (i) be located at the central filter 2 of mask central part；(ii) by from central filter 2 to
Top extends and is formed as the upper filter 1 folded on the longitudinal direction of central filter 2 along fold line 7a；(iii) lead to
It crosses from central filter 2 and extends downward and be formed as on the longitudinal direction of central filter 2 under fold line 7b folding
Portion's filter 3；(iv) central part of upper filter 1, nasal cushion 4 made of aluminium sheet are inserted into；And (v) with center mistake
Two ear loops 5 of each end connection in the both ends of filter 2, wherein including cotton fabric 6a and the following table for being formed in cotton fabric 6a
The depth fabric 6 of resin layer 6b on face is attached to the upper rim and lower filter 3 of the inner surface of upper filter 1
The lower edge portion of inner surface, and mask can be folded into three layers on the longitudinal direction of mask.
Background technique
In recent years, easy to carry and storage the foldable mask in three faces with depth fabric is widely used.
As the traditional technology for manufacturing the foldable mask in three faces with depth fabric, following side is widely used
Method: the depth fabric 6 of resin layer 6b that will include cotton fabric 6a and be formed on the lower surface of cotton fabric 6a by sewing tech
It is attached to the lower edge portion of the lower edge portion of the inner surface of upper filter 1 and the inner surface of lower filter 3.However,
Since traditional technology needs to carry out sewing tech, so manufacturing process is complicated and manufacturing cost is significantly increased.
In order to solve above-mentioned traditional problem, following method also has been carried out: being irradiated by using ultrasonic wave
Bond vitrified, will including cotton fabric 6a depth fabric 6 be attached to upper filter 1 inner surface lower edge portion and under
The lower edge portion of the inner surface of portion's filter 3.However, being wrapped in depth fabric 6 even if being irradiated at high temperature with ultrasonic wave
There is the following of the inner surface that depth fabric 6 cannot be attached to upper filter 1 without melting in the cotton fabric burning contained
The problem of lower edge portion of the inner surface of edge point and lower filter 3.
Meanwhile when using including synthetic fibers rather than the depth fabric of the raw material fabric of cotton fabric is as depth fabric 6
When, depth fabric 6 can be attached to the inner surface of upper filter 1 by using the bond vitrified that ultrasonic wave is irradiated
The lower edge portion of upper rim and the inner surface of lower filter 3, but due to raw material fabric rather than cotton fabric contacts
The face of wearer, so sense of touch and hygiene effect are deteriorated.
Summary of the invention
It manufactures easy to carry with low manufacturing cost by simple technique it is an object of the present invention to provide one kind and deposits
The method for the foldable mask in three faces with depth fabric put, the mask can closely connect along the facial contours of wearer
Touching to improve the strainability to fine dust, while providing good wearing sense and appearance.
To achieve the goals above, according to the present invention, a kind of system of foldable mask in three faces with depth fabric is provided
Method is made, the mask includes: the central filter 2 of (i) non-woven fabrics of synthetic fiber, is located at mask central part；(ii) it synthesizes
The upper filter 1 of fabric nonwoven cloth is formed and extending upwards from central filter 2, so as in central filter 2
Longitudinal direction on along fold line 7a fold；(iii) lower filter 3 of non-woven fabrics of synthetic fiber, by from central filter
2 extend downward and are formed, to fold on the longitudinal direction of central filter 2 along fold line 7b；And depth fabric 6,
Including cotton fabric 6a, the manufacturing method is the following steps are included: by hot melt adhesive applicator to the lower surface of cotton fabric 6a with shape
At resin layer 6b；Non-woven fabrics of synthetic fiber is attached on resin layer 6b to form adhesive auxiliary (adhesive-
Assisting) non-woven fabrics of synthetic fiber layer 15；Stack gradually adhesive auxiliary non-woven fabrics of synthetic fiber layer 15, resin layer 6b with
And cotton fabric 6a is to prepare the lamilate A with three-decker；Lamilate A is placed on the upper of the inner surface of upper filter 1
On each of lower edge portion of inner surface of marginal portion and lower filter 3, so that the adhesive of lamilate A assists
Non-woven fabrics of synthetic fiber layer 15 is contacted with each of upper filter 1 and lower filter 3；Assist synthesis fine in adhesive
It is closed at the temperature or higher temperature of the fusing point for the synthetic fibers for including in dimension nonwoven layer 15 with ultrasonic irradiation adhesive auxiliary
At fiber non-woven layer of cloth 15, the depth fabric 6 including cotton fabric 6a and resin layer 6b is thus attached to upper filter 1
Each of upper rim and the lower edge portion of inner surface of lower filter 3 of inner surface.
Manufacturing method according to the invention can be incited somebody to action by using ultrasonic wave and hotmelt without sewing tech
The depth fabric 6 of cotton fabric 6a including natural fiber is fixedly attached to the upper rim of the inner surface of upper filter 1
Each of with the lower edge portion of inner surface of lower filter 3, wherein upper filter 1 and lower filter 3 be by
Non-woven fabrics of synthetic fiber is made.Therefore, manufacturing process can simplify, and manufacturing cost can be greatly reduced.
The facial contours of the foldable mask in three faces and wearer that manufacture through the invention are in close contact, good to provide
Thin dirt strainability, and the mask is easy to carry and stores, while providing good wearing sense and appearance.Further, since day
The right cotton fabric 6a of fiber and the facial contact of wearer, so effective to skin health.
Detailed description of the invention
From detailed description with reference to the accompanying drawing, the purpose and others mesh of the upper surface of present invention will be more clearly understood
, feature and other the advantages of, in which:
Fig. 1 be indicate depth fabric be attached to the inner surface of upper filter upper rim and lower filter it is interior
The schematic sectional view of the state of the lower edge portion on surface；
Fig. 2 is the positive photo for indicating to have the foldable mask in three faces of depth fabric；
Fig. 3 is the subsequent photo for indicating to have the foldable mask in three faces of depth fabric；
Fig. 4 is the photo for indicating to have the plane of the foldable mask in three faces of depth fabric；
Fig. 5 is to indicate that three faces with depth fabric in the state that upper filter and lower filter are overlapped can
The positive photo of folding mouth mask；
Fig. 6 is to indicate that three faces with depth fabric in the state that upper filter and lower filter are overlapped can
The subsequent photo of folding mouth mask；
Fig. 7 is to indicate that depth fabric 6 is attached to the photo of the state of the upper rim of the inner surface of upper filter 1；
Fig. 8 is to indicate that depth fabric 6 is attached to the photo of the state of the lower edge portion of the inner surface of lower filter 3；
And
Fig. 9 is the nonwoven layer for being used to form each of upper filter, lower filter and central filter
The schematic sectional view of zoarium 10.
Specific embodiment
Hereinafter, it will be described in detail with reference to the accompanying drawings the present invention.
The present invention provides a kind of manufacturing method of foldable mask in three faces with depth fabric, which includes: the position (i)
In the central filter 2 of the non-woven fabrics of synthetic fiber of mask central part；(ii) and extending upwards from central filter 2
Be formed as on the longitudinal direction of central filter 2 along the upper filter 1 of the fold line 7a non-woven fabrics of synthetic fiber folded；
(iii) be formed as rolling on the longitudinal direction of central filter 2 along fold line 7b and extending downward from central filter 2
The lower filter 3 of folded non-woven fabrics of synthetic fiber；(iv) be inserted into the central part of upper filter 1, be made of aluminium sheet
Nasal cushion 4；And two ear loops 5 (v) connected with each end in the both ends of central filter 2；Wherein, including cotton fabric 6a
Be formed in cotton fabric 6a lower surface on resin layer 6b depth fabric 6 be attached to upper filter 1 inner surface it is upper
The lower edge portion of the inner surface of marginal portion and lower filter 3, the method are characterized in that the following steps are included: by hot
Melt adhesive is applied to the lower surface of cotton fabric 6a to form resin layer 6b；Non-woven fabrics of synthetic fiber is attached on resin layer 6b
To form adhesive auxiliary non-woven fabrics of synthetic fiber layer 15；Stack gradually adhesive auxiliary non-woven fabrics of synthetic fiber layer 15, resin
Layer 6b and cotton fabric 6a is to prepare the lamilate A with three-decker；Lamilate A is placed on to the interior table of upper filter 1
On each of the upper rim in face and the lower edge portion of inner surface of lower filter 3, so that the bonding of lamilate A
Agent auxiliary non-woven fabrics of synthetic fiber layer 15 is contacted with each of upper filter 1 and lower filter 3；It is assisted in adhesive
Ultrasonic irradiation adhesive is used at the temperature or higher temperature of the fusing point for the synthetic fibers for including in non-woven fabrics of synthetic fiber layer 15
Non-woven fabrics of synthetic fiber layer 15 is assisted, the depth fabric 6 including cotton fabric 6a and resin layer 6b is thus attached to top filtering
Each of upper rim and the lower edge portion of inner surface of lower filter 3 of the inner surface of device 1.
It is for being covered on hot melt adhesive resin layer 6b with three layers that adhesive, which assists non-woven fabrics of synthetic fiber layer 15,
Coating on the layered product A of structure.Even if winding the lamilate A with three-decker, it is also possible to prevent the lamilate A of winding
It is attached to each other, and when with ultrasonic irradiation lamilate A, adhesive auxiliary non-woven fabrics of synthetic fiber layer 15 is melted and is fused to
The lower edge portion of the inner surface of the upper rim and lower filter 3 of the inner surface of upper filter 1, so that depth fabric
6 with good adhesive strength be attached to upper filter 1 inner surface upper rim and lower filter 3 inner surface
Lower edge portion.
In addition, adhesive auxiliary synthetic fibers nonwoven layer 15 assign have three-decker lamilate A resiliency and
Solid sense, so that ultrasonic wave is effectively transferred in lamilate A and synthetic fibers when with ultrasonic irradiation lamilate A
In the hotmelt resin layer 6b that nonwoven layer 15 includes, so that depth fabric 6 is firmly bonded to upper filter 1
The lower edge portion of the inner surface of the upper rim and lower filter 3 of inner surface.
Preferably, adhesive auxiliary non-woven fabrics of synthetic fiber layer 15 be made of non-woven fabrics of synthetic fiber, the synthetic fibers without
Woven fabric is material identical with the material of upper filter 1 and lower filter 3, and adhesive auxiliary is closed as an example
It is made at fiber non-woven layer of cloth 15 of polypropylene non-woven fabric etc..
As shown in Fig. 2 to 6, the three faces foldable mask according to the present invention with depth fabric includes: that (i) is located at mouth
The central filter 2 of the non-woven fabrics of synthetic fiber of cover central part；(ii) extend and shape upwards by from central filter 2
As on the longitudinal direction of central filter 2 along fold line 7a fold non-woven fabrics of synthetic fiber upper filter 1；
(iii) be formed as rolling on the longitudinal direction of central filter 2 along fold line 7b and extending downward from central filter 2
The lower filter 3 of folded non-woven fabrics of synthetic fiber；(IV) be inserted into the central part of upper filter 1, be made of aluminium sheet
Nasal cushion 4；And two ear loops 5 (v) connected with each end in the both ends of central filter 2.
Further, in the foldable mask in three faces with depth fabric of the invention, as shown in FIG. 7 and 8, including cotton is knitted
The depth fabric 6 of the object 6a and resin layer 6b being formed on the lower surface of cotton fabric 6a is attached to the inner surface of upper filter 1
Upper rim and each of the lower edge portion of inner surface of lower filter 3.
As shown in Figure 1, depth fabric 6 is the coated fabric with double-layer structure, and has good elasticity, in the bilayer
In structure, resin layer 6b is formed on a surface of cotton fabric 6a.
As described above, the foldable mask in three faces of the invention includes the top edge for being attached to the inner surface of upper filter 1
Depth fabric 6 in partial whole length, depth fabric 6 are also attached to the lower edge portion of the inner surface of lower filter 3
Whole length on.Therefore, mask can be in close contact with the facial contours of wearer, to greatly improve the filtering effect of thin dirt
Rate.
Since depth fabric 6 includes cotton fabric 6a, it is possible to improve feeling when wearing.Moreover, it is highly preferred that depth
Fabric 6 has various colors to improve appearance.
Meanwhile the foldable mask in three faces with depth fabric has following structure: on two of central filter 2
Marginal portion 2a extends relatively longer on the direction of ear loop than two lower edge portion 2b of central filter 2, so as to
It is in close contact with the facial contours of wearer.
The foldable mask in three faces with depth fabric includes recess portion 1a, and recess portion 1a is formed in for being inserted into the bridge of the nose
To be in close contact with the bridge of the nose and cheekbone of wearer in the central part of the top profile of portion's filter 1, and top is filtered
The top profile of device 1 is formed as curve.
Meanwhile as shown in Figure 9, it is preferable that for improving the filter efficiency of fine dust, three faces with depth fabric 6
Each of upper filter 1, central filter 2 and lower filter 3 for including in foldable mask are by nonwoven layer
Zoarium 10 is formed, and in nonwoven layer zoarium 10, stacks gradually the internal layer 11 made of spun-bonded non-woven fabrics, by meltblown filters system
At the first middle layer 12, the second middle layer 13 and outer layer 14 made of spun-bonded non-woven fabrics made of hot non-woven fabrics.
Manufacturing method according to the invention, by using ultrasonic wave and hotmelt without sewing tech, including day
The depth fabric 6 of the cotton fabric 6a of right fiber can be fixedly attached to the inner surface of upper filter 1 upper rim and
Each of the lower edge portion of inner surface of lower filter 3, wherein upper filter 1 and lower filter 3 are by synthesizing
Fabric nonwoven cloth is made.Therefore, manufacturing process can simplify, and manufacturing cost can be greatly reduced.
The facial contours of the foldable mask in three faces and wearer that manufacture through the invention are in close contact, good to provide
Thin dirt filter efficiency, and the mask is easy to carry and stores, while providing good wearing sense and appearance.Further, since day
The right cotton fabric 6a of fiber and the facial contact of wearer, so effective to skin health.
[appended drawing reference]
1: upper filter
2: central filter
3: lower filter
4: nasal cushion
5: ear loop
6: depth fabric
6a: the cotton fabric of depth fabric
6b: the resin layer of depth fabric
1a: for being inserted into the recess portion of the bridge of the nose
2a: two upper rims of central filter
2b: two lower edge portions of central filter
7a, 7b: fold line
10: the nonwoven layer for forming each of upper filter, lower filter and central filter is fit
11: the internal layer of nonwoven layer zoarium
12: the first middle layer of nonwoven layer zoarium
13: the second middle layer of nonwoven layer zoarium
14: the outer layer of nonwoven layer zoarium
15: adhesive assists non-woven fabrics of synthetic fiber layer
A: there is the three-decker including cotton fabric 6a, resin layer 6b and adhesive auxiliary non-woven fabrics of synthetic fiber layer
Lamilate
B: the lower edge portion of the inner surface of the upper rim and lower filter of the inner surface of upper filter.
Claims (4)
1. a kind of manufacturing method of the foldable mask in three faces with depth fabric, the mask includes: (i) synthetic fibers nonwoven
The central filter (2) of cloth, positioned at the central part of the mask；(ii) upper filter (1) of non-woven fabrics of synthetic fiber leads to
It crosses and upwardly extends and formed from the central filter (2), so that edge folds on the longitudinal direction of the central filter (2)
Line (7a) folds；(iii) lower filter (3) of non-woven fabrics of synthetic fiber, by being extended downwardly from the central filter (2)
And formed, to be folded on the longitudinal direction of the central filter (2) along fold line (7b)；(iv) nose made of aluminium sheet
It pads (4), is inserted into the central part of the upper filter (1)；And (v) two ear loops (5), with the central filter
(2) each end connection in both ends, wherein including cotton fabric (6a) and the tree being formed on the lower surface of the cotton fabric (6a)
The depth fabric (6) of rouge layer (6b) be attached to the inner surface of the upper filter (1) upper rim and the lower part mistake
Each of the lower edge portion of inner surface of filter (3), the manufacturing method the following steps are included:
Hot melt adhesive applicator is formed into resin layer (6b) to the lower surface of the cotton fabric (6a)；By non-woven fabrics of synthetic fiber
It is attached on the resin layer (6b) to form adhesive auxiliary non-woven fabrics of synthetic fiber layer (15)；Stack gradually described adhesive
Auxiliary non-woven fabrics of synthetic fiber layer (15), the resin layer (6b) and the cotton fabric (6a) have three-decker to prepare
Lamilate (A)；By the lamilate (A) be placed on the inner surface of the upper filter (1) upper rim and it is described under
On each of lower edge portion of inner surface of portion's filter (3), so that the described adhesive of the lamilate (A) assists
Non-woven fabrics of synthetic fiber layer (15) is contacted with each of the upper filter (1) and the lower filter (3)；Institute
State the fusing point for the synthetic fibers for including in adhesive auxiliary non-woven fabrics of synthetic fiber layer (15) temperature or higher temperature under with super
Sound wave irradiates described adhesive auxiliary non-woven fabrics of synthetic fiber layer (15), thus will include the cotton fabric (6a) and the resin
Layer (6b) the depth fabric (6) be attached to the upper filter (1) inner surface upper rim and the lower part
Each of the lower edge portion of inner surface of filter (3).
2. the manufacturing method according to claim 1, wherein two upper rims (2a) of the central filter (2)
Two lower edge portions (2b) on the direction of the ear loop (5) than the central filter (2) extend relatively longer.
3. the manufacturing method according to claim 1, wherein the upper filter (1) includes recess portion (1a), the recess portion
(1a) is formed in the central part of top profile of the upper filter (1), and the top for being inserted into the bridge of the nose
The top profile of filter (1) is formed as curve.
4. the manufacturing method according to claim 1, wherein the upper filter (1), the central filter (2) with
And each of described lower filter (3) is formed by nonwoven layer fit (10), in the nonwoven layer fit (10),
Stack gradually the internal layer made of synthetic fibers spun-bonded non-woven fabrics (11), first made of synthetic fibers meltblown filters among
Layer (12), the second middle layer (13) made of the hot non-woven fabrics of synthetic fibers and made of synthetic fibers spun-bonded non-woven fabrics it is outer
Layer (14).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020170122240A KR101811578B1 (en) | 2017-09-22 | 2017-09-22 | Method of manufacturing folding three face mask with in-depth fabric |
| KR10-2017-0122240 | 2017-09-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109529215A true CN109529215A (en) | 2019-03-29 |
| CN109529215B CN109529215B (en) | 2020-10-02 |
Family
ID=61094060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810078086.8A Active CN109529215B (en) | 2017-09-22 | 2018-01-26 | Method for manufacturing three-side foldable mask with depth fabric |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6512524B2 (en) |
| KR (1) | KR101811578B1 (en) |
| CN (1) | CN109529215B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200077134A (en) | 2018-12-20 | 2020-06-30 | 금오공과대학교 산학협력단 | mask |
| KR102173161B1 (en) * | 2020-04-10 | 2020-11-02 | 주식회사 아인스 | Mask and apparatus and method for producing mask |
| CN112140560A (en) * | 2020-08-09 | 2020-12-29 | 吴献华 | Mask production line |
| WO2022158738A1 (en) * | 2021-01-20 | 2022-07-28 | 주식회사 스포컴 | Mask and manufacturing method thereof |
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| Publication number | Publication date |
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| CN109529215B (en) | 2020-10-02 |
| JP2019060064A (en) | 2019-04-18 |
| KR101811578B1 (en) | 2018-01-25 |
| JP6512524B2 (en) | 2019-05-15 |
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