WO2009139176A1 - マスク - Google Patents
マスク Download PDFInfo
- Publication number
- WO2009139176A1 WO2009139176A1 PCT/JP2009/002129 JP2009002129W WO2009139176A1 WO 2009139176 A1 WO2009139176 A1 WO 2009139176A1 JP 2009002129 W JP2009002129 W JP 2009002129W WO 2009139176 A1 WO2009139176 A1 WO 2009139176A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheet
- mask
- fiber
- nonwoven fabric
- fiber sheet
- Prior art date
Links
- 239000000835 fiber Substances 0.000 claims abstract description 320
- 210000005069 ears Anatomy 0.000 claims abstract 2
- 239000004745 nonwoven fabric Substances 0.000 claims description 113
- 229920000098 polyolefin Polymers 0.000 claims description 15
- -1 polypropylene Polymers 0.000 abstract description 79
- 239000004743 Polypropylene Substances 0.000 abstract description 43
- 229920001155 polypropylene Polymers 0.000 abstract description 43
- 238000009423 ventilation Methods 0.000 abstract 1
- 238000011156 evaluation Methods 0.000 description 41
- 230000035699 permeability Effects 0.000 description 34
- 239000004698 Polyethylene Substances 0.000 description 20
- 229920000573 polyethylene Polymers 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 19
- 239000004750 melt-blown nonwoven Substances 0.000 description 17
- 239000004744 fabric Substances 0.000 description 16
- 229920000139 polyethylene terephthalate Polymers 0.000 description 16
- 239000005020 polyethylene terephthalate Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 12
- 101100269850 Caenorhabditis elegans mask-1 gene Proteins 0.000 description 8
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 241000700605 Viruses Species 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- 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
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/28—Plant or installations without electricity supply, e.g. using electrets
- B03C3/30—Plant or installations without electricity supply, e.g. using electrets in which electrostatic charge is generated by passage of the gases, i.e. tribo-electricity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/32—Transportable units, e.g. for cleaning room air
-
- 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
- A41D13/113—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a vertical fold or weld
-
- 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
- A41D13/1138—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a cup configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/26—Details of magnetic or electrostatic separation for use in medical or biological applications
Definitions
- the present invention relates to a technique for constructing a mask to be worn on a wearer's face.
- Japanese Unexamined Patent Application Publication No. 2007-37737 discloses a mask that covers the mouth and nose of the wearer, in particular, a three-dimensional mask.
- the electret electret fiber sheet is focused on the mask breathability and mask collecting ability. While trying to improve the mask breathability and mask collection performance by using this, in designing this type of three-dimensional mask using the electret fiber sheet, the opposing mask breathability and mask collection performance are mutually reduced. There is room for further improvement in order to achieve a high level.
- the present invention has been made in view of the above points, and provides a technique effective in achieving both high levels of mask breathability and mask collection in a mask to be worn on a wearer's face. This is the issue.
- the mask according to the present invention is a mask to be worn on the wearer's face, and includes at least a mask body, a pair of ear hooks, and an adherent member.
- the mask may be of a disposable type that is intended to be used once or several times, or may be of a type that can be used repeatedly after washing.
- the mask body part is a part covering at least the mouth and nose of the wearer, and the pair of ear hooks are parts extending from both sides of the mask body part and hooked on the wearer's ear.
- the ear hook is configured using a stretchable material that does not give an excessive load to the ear, and the mask main body has a good feel and a good wearing feeling. It is preferable to use a material that is less stretchable than the ear hook and that is easy to retain its shape when it is attached to the face.
- this mask main-body part may be a planar shape, or may be a three-dimensional shape.
- the mask main body is formed into a three-dimensional shape at least when the mask is worn, and may be three-dimensionally in the same manner not only when the mask is worn but also before the mask is worn.
- the mask main body portion formed in a shape may be folded in a predetermined manner before wearing the mask to have a flat shape.
- the sheet piece forming the mask main body is a sheet-like composition typically formed by fixing or intertwining fibers by a mechanical, chemical, or thermal process. Is composed of a non-woven fabric that contains heat-meltable fibers (thermoplastic fibers) in part and can be fused (welded).
- the mask main body includes a first fiber sheet and a second fiber sheet in which a nonwoven fabric sheet made of polyolefin fiber is electretized, and the first fiber sheet is worn on the wearer side of the second fiber sheet when the mask is worn. It is made into the laminated form in which a fiber sheet is arrange
- all or part of the mask main body part has a two-layer structure of the first fiber sheet and the second fiber sheet, and the first fiber sheet and the second fiber sheet.
- positioned by the laminated form are included widely.
- nonwoven sheet made of polyolefin fibers is intended to encompass not only non-woven sheets made only of polyolefin fibers but also non-woven sheets in which other fibers are mixed with polyolefin fibers.
- Typical examples of the polyolefin fiber include polypropylene fiber, polyethylene fiber, poly 1-butene fiber and the like.
- the “electretization” referred to here is defined as a dielectric state in which a predetermined amount of positive charge or negative charge is applied to the surface of the polyolefin fiber and polarized by using a known electret treatment. That is, desired electretization is possible with respect to the nonwoven fabric sheet containing polyolefin fiber.
- the first fiber sheet is configured as a nonwoven fabric sheet having an average fiber diameter of 0.5 to 3 ⁇ m and a basis weight of 1.5 to 5 g / m 2. Both the fiber diameter and the basis weight are configured as a nonwoven fabric sheet exceeding the first fiber sheet.
- the mask collecting property can be improved, while the average fiber diameter and basis weight of the second fiber sheet to be electret are relatively set.
- the air permeability of the mask is secured by raising it. Therefore, according to such a configuration, it is possible to achieve both mask breathability and mask trapping performance at a high level.
- the second fiber sheet is preferably configured as a non-woven sheet having an average fiber diameter of 15 to 30 ⁇ m and a basis weight of 18 to 50 g / m 2 . According to such a configuration, it is possible to further improve the performance regarding the mask air permeability and the mask collecting property by appropriately selecting the average fiber diameter and basis weight of the second fiber sheet to be electretized. It is said.
- the mask main body having the above-described configuration includes a third fiber sheet disposed in a laminated manner on the opposite side of the second fiber sheet with the first fiber sheet interposed therebetween, and the third fiber sheet includes
- the nonwoven fabric sheet preferably has an average fiber diameter of 10 to 50 ⁇ m and a basis weight of 20 to 40 g / m 2 .
- the 3rd fiber sheet of such composition which touches a wearer's face (skin) directly is considered suitable as a nonwoven fabric sheet with good touch.
- this 3rd fiber sheet may be comprised as a fiber sheet by which the nonwoven fabric sheet which consists of polyolefin fiber was electret-ized like the 1st and 2nd fiber sheet, or is not electretized. It may be configured as a fiber sheet.
- the configuration of the laminated first fiber sheet and second fiber sheet constituting all or part of the mask main body in particular, the configuration of the laminated first fiber sheet and second fiber sheet constituting all or part of the mask main body.
- both the first fiber sheet and the second fiber sheet are constituted by a nonwoven fabric sheet made of electret polyolefin fibers, and by appropriately selecting the average fiber diameter and basis weight of each fiber sheet, It has become possible to achieve both mask breathability and mask trapping performance at a high level.
- FIG. 1 is referred to regarding the overall configuration of the mask 1 of the present embodiment.
- the mask 1 shown in FIG. 1 is configured as a disposable mask that is assumed to be used once or several times, and is preferably used as a mask having a barrier function as a countermeasure against viruses such as colds. In addition, if necessary, it can also be employed as a mask for pollen countermeasures.
- the mask 1 is roughly divided into a mask main body portion 10 and an ear hook portion 20.
- the mask body 10 is configured as a part that covers the wearer's mouth and nose among the parts of the mask 1. All or part of the mask main body 10 corresponds to the “mask main body” in the present invention.
- the mask body 10 has a right-side sheet piece 10a covering the wearer's right face and a left-side sheet piece 10b covering the left face joined in a connected manner by heat welding, and the wear side on the wearer side has a concave shape. 3D shape (3D structure).
- a joining edge 10c extending in the vertical direction is formed at the joining portion of the right sheet piece 10a and the left sheet piece 10b, and the mask body 10 is laterally separated from the joining edge 10c as a boundary. Divided into two.
- the mask body 10 When the mask is worn, the mask body 10 is set in a three-dimensional shape in which the right sheet piece 10a and the left sheet piece 10b are set apart from each other while being masked or when the mask is not used. Is set in a folded state (planar shape) in which the right sheet piece 10a and the left sheet piece 10b are in contact with each other.
- this mask main-body part 10 should just be made into a three-dimensional shape at least at the time of mask wear, and may be made into the same three-dimensional shape not only at the time of mask wear but before mask wear.
- the mask main body 10 has a good feel and a good feeling of wear, and has a lower elasticity than the ear hook 3 so that the three-dimensional structure is easily retained when it is attached to the face. Preferably it is done.
- FIG. 2 is referred to regarding the cross-sectional structure of the mask main body 10, that is, the right sheet piece 10a and the left sheet piece 10b.
- the mask body 10 includes a first fiber sheet 13, a second fiber sheet 14 that forms the mask outer surface 11 when the mask is worn, and a mask inner surface (wearing surface) that faces the wearer when the mask is worn.
- the third fiber sheet 15 forming 12 is formed in a three-layer structure in which the third fiber sheets 15 are arranged and bonded to each other.
- the first fiber sheet 13, the second fiber sheet 14, and the third fiber sheet 15 are integrally formed non-woven sheets, and are constituted by a single piece of non-woven sheet having no joints. There may be a configuration in which a plurality of non-woven sheets are laminated and laminated or butted and joined.
- the 1st fiber sheet 13 is comprised as a sheet body by which the nonwoven fabric sheet containing a polypropylene fiber was electret-ized (electret process). By this electretization, a dielectric state in which a predetermined amount of positive charge or negative charge is applied to the surface of the polypropylene fiber and polarized is formed. That is, desired electretization is possible for a nonwoven fabric sheet containing polypropylene fibers.
- a melt blown nonwoven sheet also referred to as “melt blown nonwoven sheet” typically manufactured by a melt blow method (also referred to as “melt blown method”) can be used.
- the first fiber sheet 13 in this case is obtained by electretizing a non-woven sheet containing at least polypropylene fibers, and the non-woven sheet may be composed of only polypropylene fibers or may be further added to the polypropylene fibers. It may be configured as an added fiber such as polyethylene fiber.
- the first fiber sheet 13 corresponds to the “first fiber sheet” in the present invention.
- the second fiber sheet 14 is configured as a sheet body obtained by electretizing a nonwoven fabric sheet containing polypropylene fibers.
- the electretization process of the second fiber sheet 14 can be appropriately performed together with the first fiber sheet 13 or independently of the first fiber sheet 13.
- the spunlace nonwoven fabric sheet typically manufactured by the spunlace method, the air through nonwoven fabric sheet manufactured by the air-through method, the spunbond nonwoven fabric sheet manufactured by the spunbond method, or a needle punch A needle punched nonwoven fabric sheet manufactured by the above method can be used, and it is preferable to use one having an average fiber diameter of 15 to 30 ⁇ m and a basis weight of 18 to 50 g / m 2 .
- the second fiber sheet 14 is obtained by electretizing a non-woven sheet containing at least polypropylene fiber, and the non-woven sheet may be composed of only the polypropylene fiber, or may be further added to the polypropylene fiber. It may be configured as an added fiber such as polyethylene fiber.
- the 2nd fiber sheet 14 here corresponds to the "2nd fiber sheet" in this invention.
- the third fiber sheet 15 is configured as a sheet body that is not subjected to electret processing.
- the third fiber sheet 15 typically includes a polyethylene terephthalate fiber and a polyethylene fiber, and a low-density point bond nonwoven fabric sheet (for example, an average fiber diameter of 10 to 50 ⁇ m, which has been subjected to point bond processing by a pressure roll, It is preferable to use a nonwoven fabric sheet having a basis weight of 20 to 40 g / m 2 , a thickness or bulk of 0.20 mm or more, and an air permeability of 150 cc / cm 2 / sec.
- the 3rd fiber sheet 15 of such a structure which touches a wearer's face (skin) directly is used suitably as a nonwoven fabric sheet with good touch.
- the third fiber sheet 15 here corresponds to the “third fiber sheet” in the present invention.
- this 3rd fiber sheet 15 can also be comprised with the nonwoven fabric sheet made from the polypropylene made into electret.
- the ear hooking portion 20 is configured to extend from the left and right sides of the mask main body portion 10, that is, from the respective end portions of the right sheet piece 10a and the left sheet piece 10b.
- the ear hook 20 corresponds to the “ear hook” in the present invention.
- Each ear hook 20 has a separate structure from the mask main body 10 and is configured to be partially overlapped and joined to the mask main body 10.
- Each ear hook 20 may be integrated with the mask main body 10 as a part of the mask main body 10.
- Each ear hook 20 is formed in a ring shape having an opening 21.
- the ear hook 21 is preferably formed using a non-woven thermoplastic synthetic fiber and a stretchable material that does not give an excessive load to the ear.
- a stretch layer for example, a nonwoven fabric in which propylene continuous fibers are welded together
- an elastic layer for example, heat A configuration in which non-woven fabric using elastic yarn made of plastic synthetic fiber elastomer or urethane is superposed on each other and laminated can be suitably used.
- the present inventors performed a quantitative performance evaluation for confirming the mask air permeability and the mask collecting property of the mask main body 10 of the present embodiment.
- the air permeability [cc / cm 2 / sec] related to the air permeability evaluation and the collection efficiency related to the collection performance evaluation [ %] was measured.
- the amount of air [cc / cm 2 / sec] passing through each evaluation piece was measured using a known Fragil type tester under a predetermined condition.
- bacterial droplet filtration efficiency (BFE) [%] was measured based on the test method prescribed
- evaluation piece of Example 1 For the evaluation piece of Example 1, as the nonwoven fabric sheet corresponding to the first fiber sheet 13, an electret-made polypropylene melt-blown nonwoven fabric sheet (average fiber diameter: 1.5 ⁇ m, basis weight: 2 g / m 2 ) is used. It was. Moreover, as the nonwoven fabric sheet corresponding to the second fiber sheet 14, an electret-made polypropylene spunlace nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 40 g / m 2 ) was used.
- nonwoven fabric sheet corresponding to the third fiber sheet 14 a non-electret polyethylene terephthalate / polyethylene point bond nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 30 g / m 2 ) was used. .
- Example 2 For the evaluation piece of Example 2, as the nonwoven fabric sheet corresponding to the first fiber sheet 13, an electret polypropylene meltblown nonwoven fabric sheet (average fiber diameter: 1.5 ⁇ m, basis weight: 2 g / m 2 ) is used. It was. Moreover, as the nonwoven fabric sheet corresponding to the second fiber sheet 14, an electret spunbond nonwoven fabric sheet made of polypropylene (average fiber diameter: 17.6 ⁇ m, basis weight: 30 g / m 2 ) was used.
- nonwoven fabric sheet corresponding to the third fiber sheet 14 a non-electret polyethylene terephthalate / polyethylene point bond nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 30 g / m 2 ) was used. .
- Example 3 Regarding the evaluation piece of Example 3, as a nonwoven fabric sheet corresponding to the first fiber sheet 13, an electret-made melt blown nonwoven fabric sheet made of polypropylene (average fiber diameter: 1.5 ⁇ m, basis weight: 2 g / m 2 ) is used. It was. Moreover, as the nonwoven fabric sheet corresponding to the second fiber sheet 14, an electretized polyethylene terephthalate / polyethylene air-through nonwoven fabric sheet (average fiber diameter: 15.4 ⁇ m, basis weight: 30 g / m 2 ) was used.
- nonwoven fabric sheet corresponding to the third fiber sheet 14 a non-electret polyethylene terephthalate / polyethylene point bond nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 30 g / m 2 ) was used. .
- Example 4 Evaluation piece of Example 4 Regarding the evaluation piece of Example 4, as a nonwoven fabric sheet corresponding to the first fiber sheet 13, an electret-made melt blown nonwoven fabric sheet made of polypropylene (average fiber diameter: 3 ⁇ m, basis weight: 2 g / m 2 ) was used. Moreover, as the nonwoven fabric sheet corresponding to the second fiber sheet 14, an electret-made polypropylene spunlace nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 40 g / m 2 ) was used.
- nonwoven fabric sheet corresponding to the third fiber sheet 14 a non-electret polyethylene terephthalate / polyethylene point bond nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 30 g / m 2 ) was used. .
- Example 5 For the evaluation piece of Example 5, as a nonwoven fabric sheet corresponding to the first fiber sheet 13, an electret-made polypropylene melt-blown nonwoven fabric sheet (average fiber diameter: 1 ⁇ m, basis weight: 2 g / m 2 ) was used. Moreover, as the nonwoven fabric sheet corresponding to the second fiber sheet 14, an electret-made polypropylene spunlace nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 40 g / m 2 ) was used.
- nonwoven fabric sheet corresponding to the third fiber sheet 14 a non-electret polyethylene terephthalate / polyethylene point bond nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 30 g / m 2 ) was used. .
- Example 6 Evaluation piece of Example 6 Regarding the evaluation piece of Example 6, as the nonwoven fabric sheet corresponding to the first fiber sheet 13, an electret melt blown nonwoven fabric sheet made of polypropylene (average fiber diameter: 1 ⁇ m, basis weight: 3 g / m 2 ) was used. Moreover, as the nonwoven fabric sheet corresponding to the second fiber sheet 14, an electret-made polypropylene spunlace nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 40 g / m 2 ) was used.
- nonwoven fabric sheet corresponding to the third fiber sheet 14 a non-electret polyethylene terephthalate / polyethylene point bond nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 30 g / m 2 ) was used. .
- Example 7 Evaluation piece of Example 7 Regarding the evaluation piece of Example 7, as a nonwoven fabric sheet corresponding to the first fiber sheet 13, an electret-made melt blown nonwoven fabric sheet made of polypropylene (average fiber diameter: 1 ⁇ m, basis weight: 5 g / m 2 ) was used. Moreover, as the nonwoven fabric sheet corresponding to the second fiber sheet 14, an electret-made polypropylene spunlace nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 40 g / m 2 ) was used.
- nonwoven fabric sheet corresponding to the third fiber sheet 14 a non-electret polyethylene terephthalate / polyethylene point bond nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 30 g / m 2 ) was used. .
- Example 8 For the evaluation piece of Example 8, as a nonwoven fabric sheet corresponding to the first fiber sheet 13, an electret-made melt blown nonwoven fabric sheet made of polypropylene (average fiber diameter: 1.5 ⁇ m, basis weight: 2 g / m 2 ) is used. It was. In addition, as a nonwoven fabric sheet corresponding to the second fiber sheet 14, an electret-made polypropylene spunlace nonwoven fabric sheet (average fiber diameter: 21.5 ⁇ m, basis weight: 40 g / m 2 ) was used.
- nonwoven fabric sheet corresponding to the third fiber sheet 14 a non-electret polyethylene terephthalate / polyethylene point bond nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 30 g / m 2 ) was used. .
- Example 9 For the evaluation piece of Example 9, as the nonwoven fabric sheet corresponding to the first fiber sheet 13, an electret polypropylene meltblown nonwoven fabric sheet (average fiber diameter: 1.5 ⁇ m, basis weight: 2 g / m 2 ) is used. It was. In addition, as a nonwoven fabric sheet corresponding to the second fiber sheet 14, an electret-made polypropylene spunlace nonwoven fabric sheet (average fiber diameter: 24.8 ⁇ m, basis weight: 40 g / m 2 ) was used.
- nonwoven fabric sheet corresponding to the third fiber sheet 14 a non-electret polyethylene terephthalate / polyethylene point bond nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 30 g / m 2 ) was used. .
- Example 10 Evaluation piece of Example 10
- an electret polypropylene meltblown nonwoven fabric sheet (average fiber diameter: 1.5 ⁇ m, basis weight: 2 g / m 2 ) is used. It was.
- an electret-made polypropylene spunlace nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 40 g / m 2 ) was used.
- nonwoven fabric sheet corresponding to the third fiber sheet 14 a non-electret polyethylene terephthalate / polyethylene point bond nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 30 g / m 2 ) was used. .
- evaluation piece of Comparative Example 1 For the evaluation piece of Comparative Example 1, as the nonwoven fabric sheet corresponding to the first fiber sheet 13, an electret polypropylene meltblown nonwoven fabric sheet (average fiber diameter: 2.5 ⁇ m, basis weight: 20 g / m 2 ) is used. It was. In addition, as the nonwoven fabric sheet corresponding to the second fiber sheet 14, a non-electret polyethylene terephthalate / polyethylene point bond nonwoven fabric sheet (average fiber diameter: 26 ⁇ m, basis weight: 30 g / m 2 ) was used.
- nonwoven fabric sheet corresponding to the third fiber sheet 15 a non-electret polyethylene terephthalate / polyethylene point bond nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 30 g / m 2 ) was used. .
- nonwoven fabric sheet corresponding to the third fiber sheet 15 a non-electret polyethylene terephthalate / polyethylene point bond nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 30 g / m 2 ) was used. .
- nonwoven fabric sheet corresponding to the third fiber sheet 15 a non-electret polyethylene terephthalate / polyethylene point bond nonwoven fabric sheet (average fiber diameter: 17.6 ⁇ m, basis weight: 30 g / m 2 ) was used. .
- FIG. 3 shows measured values of the air permeability and the collection efficiency of each evaluation piece of Examples 1 to 10 and Comparative Examples 1 to 3 of the present embodiment
- FIG. A correlation graph between the air permeability and the collection efficiency of each evaluation piece of Examples 1 to 10 and Comparative Examples 1 to 3 in the form is shown.
- Examples 1 to 10 are indicated by ⁇ plots
- Comparative Examples 1 to 3 are indicated by ⁇ plots.
- the reference value of the air permeability related to the mask air permeability is set to 70 [cc / cm 2 / sec] or more, and the reference value of the collection efficiency related to the mask collecting property is set to 90 [cc / cm 2 / sec]. %]. It was confirmed that all of Comparative Examples 1 to 3 were outside the reference range defined by these reference values, whereas Examples 1 to 10 were all within this reference range. It was. It should be noted that the region of 70 [cc / cm 2 / sec] or more, which is the reference value of the air permeability, is difficult for the wearer even if the gap between the mask body 10 and the wearer's face is completely eliminated. This is an area where you never feel Further, an area of 90 [%] or more, which is a reference value of the collection efficiency, is an area where the barrier performance as a countermeasure against viruses such as a cold can be reliably obtained.
- Comparative Example 1 since the air permeability is significantly lower than the reference value, the air permeability and the collection efficiency of the first fiber sheet 13 can be adjusted only by electretizing one of the first fiber sheets 13 even if the average fiber diameter and basis weight are adjusted. It was evaluated that there was a limit to meeting the standard values for both. Further, when comparing Comparative Example 1 with Comparative Examples 2 and 3, it is possible to significantly increase the air permeability by electretizing both the first fiber sheet 13 and the second fiber sheet 14. On the other hand, in Comparative Examples 2 and 3, the collection efficiency is lower than that in Comparative Example 1. Therefore, the present inventors presuppose that both the first fiber sheet 13 and the second fiber sheet 14 are electretized, and further the first fiber sheet 13 and the second fiber sheet 14.
- the average fiber diameter and basis weight are set relatively smaller than the average fiber diameter and basis weight of the second fiber sheet 14 (for the second fiber sheet 14, the average fiber It is effective to set the diameter and basis weight relatively larger than the average fiber diameter and basis weight of the first fiber sheet 13. Further, when the average fiber diameter and the basis weight in the first fiber sheet 13 and the second fiber sheet 14 were specifically set, the following quantitative performance evaluation was performed. In this performance evaluation, in order to set the optimum average fiber diameter and basis weight of each of the first fiber sheet 13 and the second fiber sheet 14, various changes are made to the average fiber diameter and basis weight of the nonwoven fabric sheet corresponding to each fiber sheet. The air permeability and the collection efficiency were measured according to the measurement methods described above.
- FIG. 5 is a graph showing the relationship between the average fiber diameter [ ⁇ m], the collection efficiency [%] and the air permeability [cc / cm 2 / sec] of the nonwoven fabric sheet corresponding to the first fiber sheet 13.
- FIG. 6 is a graph showing the relationship between the basis weight [g / m 2 ], the collection efficiency [%] and the air permeability [cc / cm 2 / sec] of the first fiber sheet 13.
- nonwoven fabric sheet corresponding to the first fiber sheet 13 an electret melt blown nonwoven fabric sheet made of polypropylene (average fiber diameter: 0.5 to 4 ⁇ m, basis weight: 1 to 6 g / m 2) is used.
- nonwoven fabric sheet corresponding to the fiber sheet 14 of No. 2 an electret spunlace nonwoven fabric sheet made of polypropylene (average fiber diameter: 20 ⁇ m, basis weight: 40 g / m 2 ) was used.
- the average fiber diameter of the first fiber sheet 13 is 0.5 to 3 ⁇ m, which is smaller than that of the second fiber sheet 14, and the basis weight is the second fiber sheet 13.
- the air permeability of the mask is increased to a level at which the air permeability becomes 70 [cc / cm 2 / sec], and the reference value of the collection efficiency is 90. It was confirmed that it was possible to improve the mask collecting ability to a level of [%].
- the optimum range of the average fiber diameter and basis weight of the first fiber sheet 13 is such that the average fiber diameter of the second fiber sheet 14 is changed around 20 ⁇ m, and the basis weight is changed around 40 g / m 2. In this case, it was confirmed that the same tendency was observed.
- FIG. 7 and FIG. 8 are referred to regarding the optimum average fiber diameter and basis weight of the second fiber sheet 14.
- FIG. 7 is a graph showing the relationship between the average fiber diameter [ ⁇ m], the collection efficiency [%] and the air permeability [cc / cm 2 / sec] of the nonwoven fabric sheet corresponding to the second fiber sheet 14.
- FIG. 8 is a graph showing the relationship between the basis weight [g / m 2 ], the collection efficiency [%] and the air permeability [cc / cm 2 / sec] of the second fiber sheet 14.
- nonwoven fabric sheet corresponding to the second fiber sheet 14 an electret-made polypropylene spunlace nonwoven fabric sheet (average fiber diameter: 10 to 40 ⁇ m, basis weight: 20 to 60 g / m 2 ) is used.
- nonwoven fabric sheet corresponding to 1 fiber sheet 13 an electret melt blown nonwoven fabric sheet made of polypropylene (average fiber diameter: 1.5 ⁇ m, basis weight: 2 g / m 2 ) was used.
- the second fiber sheet 14 has an average fiber diameter of 15 to 30 ⁇ m larger than that of the first fiber sheet 13, and the basis weight thereof is the first fiber sheet.
- the air permeability of the mask is increased to a level at which the air permeability becomes 70 [cc / cm 2 / sec], and the standard value of the collection efficiency is 90 [%]. It was confirmed that the mask collecting ability can be improved to a certain level.
- the optimum range of the average fiber diameter and basis weight of the second fiber sheet 14 is such that the average fiber diameter of the first fiber sheet 13 is changed around 1.5 ⁇ m, and the basis weight is around 2 g / m 2. It was confirmed that the same tendency was observed even when changed at.
- the mask 1 of the present embodiment imparts new mask performance by changing the average fiber diameter and basis weight of the electretized nonwoven fabric sheet in the thickness direction of the mask main body 10.
- an electret nonwoven fabric sheet having an average fiber diameter of 0.5 to 3 ⁇ m and a basis weight of 1.5 to 5 g / m 2 is used as the first fiber sheet 13, and the average fiber diameter is 15 to 30 ⁇ m.
- an electretized nonwoven fabric sheet having a basis weight of 18 to 50 g / m 2 as the second fiber sheet 14 it is possible to realize a mask structure in which the mask air permeability and the mask collecting property are compatible at a high level. It is possible.
- an electret nonwoven fabric sheet having an average fiber diameter of 0.5 to 3 ⁇ m and a basis weight of 1.5 to 5 g / m 2 is used as the first fiber sheet 13, and the average
- the second fiber sheet 14 is an electret nonwoven fabric sheet that has a fiber diameter and basis weight both exceeding the above numerical ranges (average fiber diameter: 0.5 to 3 ⁇ m, basis weight: 1.5 to 5 g / m 2 ). Is possible. In this case, while suppressing the average fiber diameter and basis weight of the first fiber sheet 13 to be electret, the mask collecting property can be improved, while the average fiber diameter of the second fiber sheet 14 to be electret and By raising the basis weight relatively, the mask breathability is secured.
- the nonwoven fabric sheet of the 1st fiber sheet 13 and the 2nd fiber sheet 14 was comprised using the polypropylene fiber among polyolefin fibers, it is possible to perform electretization processing especially easily. In addition, an inexpensive mask excellent in cost is provided. If necessary, the nonwoven fabric sheets of the first fiber sheet 13 and the second fiber sheet 14 may be configured using polyolefin fibers other than polypropylene fibers, such as polyethylene fibers and poly 1-butene fibers. .
- the mask main body may be configured to include at least a non-woven sheet corresponding to the first fiber sheet 13 and a non-woven sheet corresponding to the second fiber sheet 14, and the mask main body has two or more layers. A structure can be adopted as appropriate.
- the number and arrangement position of the other fiber sheets. can be changed as needed.
- the whole or part of the mask main body portion depends on the portion where the nonwoven fabric sheet corresponding to the first fiber sheet 13 and the nonwoven fabric sheet corresponding to the second fiber sheet 14 are disposed in a laminated form. Can be configured.
- the non-woven sheet corresponding to the first fiber sheet 13 and the non-woven sheet corresponding to the second fiber sheet 14 are non-woven sheets containing polyolefin fibers to enable a desired electretization treatment.
- the mask main-body part 10 was formed by the heat welding joining of the right side sheet piece 10a and the left side sheet piece 10b was described, in this invention, various joining methods including heat welding.
- the mask main body can be formed by joining all or part of at least one of the plurality of sheet pieces.
- the disposable mask that is intended to be used once or several times is described. However, by appropriately selecting the material of the mask main body and the ear hook, washing and the like are performed.
- the present invention can also be applied to a type of mask that can be used repeatedly.
- the present invention can also be applied to a mask having a mask main body portion planar shape.
- FIG. 6 is a correlation graph between the air permeability and the collection efficiency of each evaluation piece of Examples 1 to 10 and Comparative Examples 1 to 3 of the present embodiment. It is a graph which shows the relationship between the average fiber diameter [micrometer] of the nonwoven fabric sheet corresponded to the 1st fiber sheet 13, collection efficiency [%], and air permeability [cc / cm ⁇ 2 > / sec].
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Abstract
Description
マスク本体部10は、マスク1の各部位のうち着用者の口及び鼻を覆う部位として構成される。このマスク本体部10の全部または一部が、本発明における「マスク本体部」に相当する。このマスク本体部10は、着用者の右顔面を覆う右側シート片10aと左顔面を覆う左側シート片10bが熱溶着によって互いに連接状に接合されて、着用者側の着用面が凹み形状とされた立体形状(立体構造)になっている。また、これら右側シート片10a及び左側シート片10bの接合部分には、上下方向に長手状に延在する接合縁10cが形成されており、マスク本体部10がこの接合縁10cを境界として左右に二分される。
耳掛け部20は、マスク本体部10の左右両側、すなわち右側シート片10a及び左側シート片10bの各々の端部から延出する構成とされる。この耳掛け部20が、本発明における「耳掛け部」に相当する。各耳掛け部20は、マスク本体部10とは別体構造とされ、マスク本体部10に部分的に重ね合わせて接合された構成とされる。各耳掛け部20は、マスク本体部10の一部としてマスク本体部10と一体構造とされてもよい。また、各耳掛け部20は、開口21を備えるリング状とされる。マスク1の着用時には、着用者の顔、特には鼻及び口をマスク本体部10によって覆った状態で、耳掛け部20の開口21が着用者の耳に引っ掛けられる。この耳掛け部21は、熱可塑性合成繊維の不織布であって、且つ耳に過度な負荷を与えないような伸縮性を有する素材を用いて形成されるのが好ましい。具体的には、非弾性的に伸長可能な伸長性繊維からなる伸長層(例えば、プロピレン連続繊維が互いに溶着された不織布)と、弾性伸縮可能な弾性伸縮性繊維からなる弾性層(例えば、熱可塑性合成繊維のエラストラマーやウレタン等からなる弾性糸を使用した不織布)が互いに重ね合わせられ積層された構成を好適に用いることができる。
実施例1の評価片に関しては、第1の繊維シート13に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のメルトブロー不織布シート(平均繊維径:1.5μm、目付:2g/m2)を用いた。また、第2の繊維シート14に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のスパンレース不織布シート(平均繊維径:17.6μm、目付:40g/m2)を用いた。また、第3の繊維シート14に相当する不織布シートとして、エレクトレット化されていない、ポリエチレンテレフタレート/ポリエチレン製のポイントボンド不織布シート(平均繊維径:17.6μm、目付:30g/m2)を用いた。
実施例2の評価片に関しては、第1の繊維シート13に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のメルトブロー不織布シート(平均繊維径:1.5μm、目付:2g/m2)を用いた。また、第2の繊維シート14に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のスパンボンド不織布シート(平均繊維径:17.6μm、目付:30g/m2)を用いた。また、第3の繊維シート14に相当する不織布シートとして、エレクトレット化されていない、ポリエチレンテレフタレート/ポリエチレン製のポイントボンド不織布シート(平均繊維径:17.6μm、目付:30g/m2)を用いた。
実施例3の評価片に関しては、第1の繊維シート13に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のメルトブロー不織布シート(平均繊維径:1.5μm、目付:2g/m2)を用いた。また、第2の繊維シート14に相当する不織布シートとして、エレクトレット化されたポリエチレンテレフタレート/ポリエチレン製のエアスルー不織布シート(平均繊維径:15.4μm、目付:30g/m2)を用いた。また、第3の繊維シート14に相当する不織布シートとして、エレクトレット化されていない、ポリエチレンテレフタレート/ポリエチレン製のポイントボンド不織布シート(平均繊維径:17.6μm、目付:30g/m2)を用いた。
実施例4の評価片に関しては、第1の繊維シート13に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のメルトブロー不織布シート(平均繊維径:3μm、目付:2g/m2)を用いた。また、第2の繊維シート14に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のスパンレース不織布シート(平均繊維径:17.6μm、目付:40g/m2)を用いた。また、第3の繊維シート14に相当する不織布シートとして、エレクトレット化されていない、ポリエチレンテレフタレート/ポリエチレン製のポイントボンド不織布シート(平均繊維径:17.6μm、目付:30g/m2)を用いた。
実施例5の評価片に関しては、第1の繊維シート13に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のメルトブロー不織布シート(平均繊維径:1μm、目付:2g/m2)を用いた。また、第2の繊維シート14に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のスパンレース不織布シート(平均繊維径:17.6μm、目付:40g/m2)を用いた。また、第3の繊維シート14に相当する不織布シートとして、エレクトレット化されていない、ポリエチレンテレフタレート/ポリエチレン製のポイントボンド不織布シート(平均繊維径:17.6μm、目付:30g/m2)を用いた。
実施例6の評価片に関しては、第1の繊維シート13に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のメルトブロー不織布シート(平均繊維径:1μm、目付:3g/m2)を用いた。また、第2の繊維シート14に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のスパンレース不織布シート(平均繊維径:17.6μm、目付:40g/m2)を用いた。また、第3の繊維シート14に相当する不織布シートとして、エレクトレット化されていない、ポリエチレンテレフタレート/ポリエチレン製のポイントボンド不織布シート(平均繊維径:17.6μm、目付:30g/m2)を用いた。
実施例7の評価片に関しては、第1の繊維シート13に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のメルトブロー不織布シート(平均繊維径:1μm、目付:5g/m2)を用いた。また、第2の繊維シート14に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のスパンレース不織布シート(平均繊維径:17.6μm、目付:40g/m2)を用いた。また、第3の繊維シート14に相当する不織布シートとして、エレクトレット化されていない、ポリエチレンテレフタレート/ポリエチレン製のポイントボンド不織布シート(平均繊維径:17.6μm、目付:30g/m2)を用いた。
実施例8の評価片に関しては、第1の繊維シート13に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のメルトブロー不織布シート(平均繊維径:1.5μm、目付:2g/m2)を用いた。また、第2の繊維シート14に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のスパンレース不織布シート(平均繊維径:21.5μm、目付:40g/m2)を用いた。また、第3の繊維シート14に相当する不織布シートとして、エレクトレット化されていない、ポリエチレンテレフタレート/ポリエチレン製のポイントボンド不織布シート(平均繊維径:17.6μm、目付:30g/m2)を用いた。
実施例9の評価片に関しては、第1の繊維シート13に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のメルトブロー不織布シート(平均繊維径:1.5μm、目付:2g/m2)を用いた。また、第2の繊維シート14に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のスパンレース不織布シート(平均繊維径:24.8μm、目付:40g/m2)を用いた。また、第3の繊維シート14に相当する不織布シートとして、エレクトレット化されていない、ポリエチレンテレフタレート/ポリエチレン製のポイントボンド不織布シート(平均繊維径:17.6μm、目付:30g/m2)を用いた。
実施例10の評価片に関しては、第1の繊維シート13に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のメルトブロー不織布シート(平均繊維径:1.5μm、目付:2g/m2)を用いた。また、第2の繊維シート14に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のスパンレース不織布シート(平均繊維径:17.6μm、目付:40g/m2)を用いた。また、第3の繊維シート14に相当する不織布シートとして、エレクトレット化されていない、ポリエチレンテレフタレート/ポリエチレン製のポイントボンド不織布シート(平均繊維径:17.6μm、目付:30g/m2)を用いた。
比較例1の評価片に関しては、第1の繊維シート13に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のメルトブロー不織布シート(平均繊維径:2.5μm、目付:20g/m2)を用いた。また、第2の繊維シート14に相当する不織布シートとして、エレクトレット化されていない、ポリエチレンテレフタレート/ポリエチレン製のポイントボンド不織布シート(平均繊維径:26μm、目付:30g/m2)を用いた。また、第3の繊維シート15に相当する不織布シートとして、エレクトレット化されていない、ポリエチレンテレフタレート/ポリエチレン製のポイントボンド不織布シート(平均繊維径:17.6μm、目付:30g/m2)を用いた。
比較例2の評価片に関しては、第1の繊維シート13に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のメルトブロー不織布シート(平均繊維径:8μm、目付:2g/m2)を用いた。また、第2の繊維シート14に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のスパンレース不織布シート(平均繊維径:17.6μm、目付:40g/m2)を用いた。また、第3の繊維シート15に相当する不織布シートとして、エレクトレット化されていない、ポリエチレンテレフタレート/ポリエチレン製のポイントボンド不織布シート(平均繊維径:17.6μm、目付:30g/m2)を用いた。
比較例3の評価片に関しては、第1の繊維シート13に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のメルトブロー不織布シート(平均繊維径:1.5μm、目付:2g/m2)を用いた。また、第2の繊維シート14に相当する不織布シートとして、エレクトレット化されたポリプロピレン製のスパンレース不織布シート(平均繊維径:17.6μm、目付:20g/m2)を用いた。また、第3の繊維シート15に相当する不織布シートとして、エレクトレット化されていない、ポリエチレンテレフタレート/ポリエチレン製のポイントボンド不織布シート(平均繊維径:17.6μm、目付:30g/m2)を用いた。
上記実施例1~10及び比較例1~3の各評価片のマスク通気性及びマスク捕集性に関しては図3及び図4が参照される。図3には、本実施の形態の実施例1~10及び比較例1~3の各評価片の通気度及び捕集効率の各測定値が記載されており、また図4には、本実施の形態の実施例1~10及び比較例1~3の各評価片の通気度と捕集効率との相関グラフが示されている。なお、図4では、実施例1~10を○プロットで示し、比較例1~3を●プロットで示している。
なお、本発明は上記の実施の形態のみに限定されるものではなく、種々の応用や変形が考えられる。例えば、上記実施の形態を応用した次の各形態を実施することもできる。
10…マスク本体部
10a…右側シート片
10b…左側シート片
10c…接合縁
11…マスク外表面
12…マスク内表面
13…第1の繊維シート
14…第2の繊維シート
15…第3の繊維シート
20…耳掛け部
21…開口
Claims (3)
- 着用者の少なくとも口及び鼻を覆うマスク本体部と、
前記マスク本体部の両側から延出して着用者の耳に引っ掛けられる一対の耳掛け部と、
を備えるマスクであって、
前記マスク本体部は、ポリオレフィン系繊維からなる不織布シートがエレクトレット化された第1の繊維シート及び第2の繊維シートを含むとともに、マスク着用時に前記第2の繊維シートの着用者側に前記第1の繊維シートが配設されるような積層状とされ、
前記第1の繊維シートは、平均繊維径が0.5~3μm、目付が1.5~5g/m2の不織布シートとして構成され、前記第2の繊維シートは、平均繊維径及び目付がいずれも前記第1の繊維シートを上回る不織布シートとして構成されることを特徴とするマスク。 - 請求項1に記載のマスクであって、
前記第2の繊維シートは、平均繊維径が15~30μm、目付が18~50g/m2の不織布シートとして構成されることを特徴とするマスク。 - 請求項1または2に記載のマスクであって、
前記マスク本体部は、前記第1の繊維シートを挟んで前記第2の繊維シートと反対側に積層状に配設される第3の繊維シートを備え、前記第3の繊維シートは、平均繊維径が10~50μm、目付が20~40g/m2とされた不織布シートして構成されることを特徴とするマスク。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09746383.0A EP2286878A4 (en) | 2008-05-15 | 2009-05-14 | MASK |
US12/991,917 US20110203593A1 (en) | 2008-05-15 | 2009-05-14 | Mask |
CN200980120167.9A CN102046242B (zh) | 2008-05-15 | 2009-05-14 | 口罩 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008128869A JP5072708B2 (ja) | 2008-05-15 | 2008-05-15 | マスク |
JP2008-128869 | 2008-05-15 |
Publications (1)
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WO2009139176A1 true WO2009139176A1 (ja) | 2009-11-19 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/002129 WO2009139176A1 (ja) | 2008-05-15 | 2009-05-14 | マスク |
Country Status (7)
Country | Link |
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US (1) | US20110203593A1 (ja) |
EP (1) | EP2286878A4 (ja) |
JP (1) | JP5072708B2 (ja) |
KR (1) | KR20110017370A (ja) |
CN (1) | CN102046242B (ja) |
TW (1) | TWI457156B (ja) |
WO (1) | WO2009139176A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
CN102046242B (zh) | 2012-11-07 |
TWI457156B (zh) | 2014-10-21 |
KR20110017370A (ko) | 2011-02-21 |
TW201010754A (en) | 2010-03-16 |
EP2286878A1 (en) | 2011-02-23 |
EP2286878A4 (en) | 2014-03-12 |
JP5072708B2 (ja) | 2012-11-14 |
US20110203593A1 (en) | 2011-08-25 |
CN102046242A (zh) | 2011-05-04 |
JP2009273726A (ja) | 2009-11-26 |
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