WO2022163855A1 - 防護服 - Google Patents

防護服 Download PDF

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Publication number
WO2022163855A1
WO2022163855A1 PCT/JP2022/003684 JP2022003684W WO2022163855A1 WO 2022163855 A1 WO2022163855 A1 WO 2022163855A1 JP 2022003684 W JP2022003684 W JP 2022003684W WO 2022163855 A1 WO2022163855 A1 WO 2022163855A1
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WO
WIPO (PCT)
Prior art keywords
protective clothing
nonwoven fabric
fabric
meltblown nonwoven
sheet
Prior art date
Application number
PCT/JP2022/003684
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English (en)
French (fr)
Japanese (ja)
Inventor
雅之 北川
祐一郎 林
寛貴 武田
Original Assignee
東レ株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 東レ株式会社 filed Critical 東レ株式会社
Priority to JP2022578538A priority Critical patent/JPWO2022163855A1/ja
Publication of WO2022163855A1 publication Critical patent/WO2022163855A1/ja

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    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/002—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment
    • 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
    • A41D13/02—Overalls, e.g. bodysuits or bib overalls

Definitions

  • the present invention relates to protective clothing. More specifically, the present invention relates to protective clothing with excellent breathability, water pressure resistance, and dust resistance.
  • Patent Literature 1 discloses a dustproof garment that can suppress dust generation and has improved breathability.
  • the dustproof clothing described in Patent Document 1 has a mesh part to ensure breathability.
  • this dustproof clothing does not have sufficient water resistance. Therefore, this dust-proof clothing is unsuitable for work involving water, and there is a problem that water easily enters the dust-proof clothing, and the wearer is easily contaminated, the workability is significantly reduced, and the wearer is likely to feel uncomfortable. .
  • the present invention was made in view of such conventional problems, and aims to provide protective clothing with excellent breathability, water pressure resistance, and dust resistance.
  • the protective clothing of one aspect of the present invention that solves the above problems is a protective clothing that includes a body portion, and the body portion includes a portion A that covers the pectoralis major muscle of the wearer when worn, and is attached to the body portion. , a sheet-like article covering the portion A, the sheet-like article being attached to a position above the portion A in the length direction of the protective clothing, and the protective clothing having an air permeability of 30 cm 3 / cm 2 /sec or more, and a second fabric having a water pressure resistance of 400 mmH 2 O or more, wherein the first fabric is arranged in the portion A and the first and a first meltblown nonwoven fabric, wherein the second fabric constitutes the sheet-like article and is arranged in a portion other than the portion A of the protective clothing. is.
  • FIG. 1 is a schematic front view of protective clothing according to one embodiment (first embodiment) of the present invention.
  • FIG. 2 is a schematic front view for explaining a sheet-like object.
  • FIG. 3 is a schematic front view for explaining a sheet-like object.
  • FIG. 4 is a schematic front view of protective clothing according to one embodiment (second embodiment) of the present invention.
  • FIG. 5 is a schematic rear view of protective clothing according to one embodiment (second embodiment) of the present invention.
  • FIG. 6 is a schematic front view of protective clothing according to one embodiment (third embodiment) of the present invention.
  • FIG. 1 is a schematic front view of protective clothing according to one embodiment (first embodiment) of the present invention.
  • FIG. 2 is a schematic front view for explaining a sheet-like object.
  • FIG. 3 is a schematic front view for explaining a
  • a protective garment comprises a body portion.
  • the body portion has a portion A that covers the wearer's pectoral muscles when worn.
  • the protective clothing has a sheet-like object attached to the body portion and covering the portion A.
  • the sheet-like object is attached to a position above part A of the protective clothing in the lengthwise direction.
  • the protective clothing has a first fabric with an air permeability of 30 cm 3 /cm 2 /sec or more and a second fabric with a water pressure resistance of 400 mmH 2 O or more.
  • a first fabric is disposed in portion A and has a laminate structure of a first spunbond nonwoven and a first meltblown nonwoven.
  • the second fabric constitutes a sheet-like material and is arranged on a portion other than the portion A of the protective clothing.
  • the “body portion” refers to a portion above the waist of the wearer when the protective clothing is worn by the wearer.
  • the body size of the wearer is not particularly limited.
  • a wearer having the following body dimensions is exemplified for clarity of explanation. That is, the wearer had a height of 171 cm, an upper arm length of 32 cm, a neck-acromion straight line distance of 15 cm, a neck height of 140 cm, a sternum midpoint height of 128 cm, and an anterior armpit.
  • the width is 34 cm
  • the straight distance between the lower corners of the scapula is 20 cm
  • the thigh length is 44 cm
  • the tibia upper edge height is 43 cm.
  • FIG. 1 is a schematic front view of the protective clothing 1 of this embodiment.
  • the body portion 2 of the protective clothing 1 has a portion A that covers the pectoral muscles of the wearer when worn.
  • many important organs for the human body such as the heart and lungs, are present in the vicinity of the pectoralis major muscle. Therefore, the wearer is more sensitive to heat in the pectoral muscles and the areas around the pectoralis major muscles than in areas other than these areas.
  • the first fabric is used for the portion A in the front body portion 2 . This allows the temperature and humidity in the vicinity of the wearer's pectoral muscles to approximate the temperature and humidity of the outside air. As a result, the protective clothing 1 of this embodiment has excellent comfort.
  • the portion A may be any portion that covers part or all of the pectoralis major muscle, and the position and number thereof are not particularly limited.
  • a second fabric with high water pressure resistance is arranged in the portion B other than the portion A.
  • the second fabric forms the sheet 4 and covers the portion A.
  • the protective clothing 1 is provided with a fastener 3 along the length direction at the center of the body part 2 so that the wearer can put on and take off the protective clothing 1. - ⁇
  • portions A made of the first fabric are provided at two locations on the left and right sides of the fastener 3 .
  • portion A can be adjusted as appropriate to obtain the desired breathability.
  • the case where two portions A each having a length of 15 cm and a width of 15 cm are provided is exemplified.
  • the protective clothing 1 is provided with a sheet-like object 4 that covers the portion A.
  • the sheet material 4 is made of the second fabric.
  • FIG. 2 is a schematic front view for explaining the sheet-like material 4.
  • FIG. The sheet material 4 covers the portion A.
  • FIG. 2 illustrates an aspect in which the entire portion A is covered with the sheet-like material 4 .
  • the sheet-like object 4 is preferably attached to the upper position of the protective clothing 1 in the length direction with respect to the portion A (first attachment portion 41).
  • the sheet-like material 4 can prevent water from entering the protective clothing 1 from the portion A, for example, when water splashes from above.
  • a method for attaching the sheet-like material 4 to the protective clothing 1 is not particularly limited.
  • the sheet-like material 4 may be sewn onto the protective clothing 1 or may be attached with an adhesive or the like.
  • the sheet-like object 4 may be detachably attached to the protective clothing 1 by a hook-and-loop fastener, a button, or the like.
  • the sheet-like material 4 is preferably attached to the body part 2 so as to form a gap G for communication between the part A and the outside at a lateral position or a lower position in the length direction of the protective clothing 1 with respect to the part A.
  • FIG. 2 illustrates a mode in which the sheet-like object 4 is attached to the protective clothing 1 at the second attachment portions 42 at lateral positions on both sides in addition to the first attachment portions 41 at the upper position.
  • FIG. 3 is a schematic front view for explaining the sheet-like material 4. As shown in FIG. FIG. 3 illustrates a mode in which the sheet-like object 4 is attached to the protective clothing 1 at the second attachment portion 42 at the lower position in addition to the first attachment portion 41 at the upper position.
  • a gap G is formed between the sheet material 4 and the protective clothing 1 .
  • the gap G enables exchange of air and moisture such as sweat of the wearer between the inside of the protective clothing 1 and the outside of the protective clothing 1 .
  • the protective clothing 1 tends to exhibit excellent breathability and is highly comfortable for the wearer.
  • the sheet-like object 4 is attached to the protective clothing 1 also in the horizontal position and the lower position, the sheet-like object 4 is attached to the protective clothing 1 only in the upper position. The object 4 easily follows the protective clothing 1 when the wearer works, and the portion A is less likely to be exposed to the outside.
  • the protective clothing 1 easily protects the portion A with the sheet-like material 4, and water is prevented from entering the protective clothing 1 from the portion A.
  • the sheet-like material 4 can increase the water pressure resistance of the portion A.
  • the air permeability of the first fabric may be 30 cm 3 /cm 2 /sec or more, preferably 60 cm 3 /cm 2 /sec or more, more preferably 80 cm 3 /cm 2 /sec or more. .
  • the air permeability of the first fabric is preferably 150 cm 3 /cm 2 /s or less, more preferably 130 cm 3 /cm 2 /s or less, and 110 cm 3 /cm 2 /s or less. is more preferred.
  • the protective clothing can bring the environment inside the clothing closer to the environment outside the clothing when working in the protective clothing. As a result, the protective garment has excellent comfort.
  • the method of measuring air permeability is not particularly limited.
  • air permeability can be measured using a permeability tester (FX3300, manufactured by Takayama Lead Co., Ltd.).
  • the first fabric has a laminated structure of a first spunbond nonwoven fabric and a first meltblown nonwoven fabric.
  • the bulk density of the first meltblown nonwoven fabric is preferably 0.05 g/cm 3 or more, and 0 It is more preferably 0.08 g/cm 3 or more, and even more preferably 0.10 g/cm 3 or more.
  • the bulk density of the first meltblown nonwoven fabric is preferably 0.18 g/cm 3 or less, and 0.16 g/cm It is more preferably 3 or less, and even more preferably 0.15 g/cm 3 or less.
  • the bulk density is calculated from the basis weight measured according to JIS L 1913:2010 and the thickness measured according to JIS L 1085:1998, basis weight (g/m 2 )/thickness (m). Calculate from
  • the thickness of the first melt blown nonwoven fabric is preferably 70 ⁇ m or more, more preferably 80 ⁇ m or more, and 90 ⁇ m or more. is more preferred.
  • the thickness of the first melt blown nonwoven fabric is preferably 200 ⁇ m or less, more preferably 160 ⁇ m or less, and 140 ⁇ m or less. is more preferable.
  • the average single fiber diameter of the fibers constituting the first meltblown nonwoven fabric is preferably 3 ⁇ m or more, more preferably 4 ⁇ m or more, and even more preferably 6 ⁇ m or more.
  • the average single fiber diameter of the fibers constituting the first melt blown nonwoven fabric is preferably 15 ⁇ m or less, more preferably 10 ⁇ m or less, and even more preferably 8 ⁇ m or less.
  • the strength of the first melt blown nonwoven fabric is more excellent.
  • the first meltblown nonwoven fabric has a large opening size. As a result, the protective clothing has improved breathability in the portion where the first fabric is used.
  • the average single fiber diameter is equal to or less than the above upper limit, the opening size of the first melt blown nonwoven fabric is small. As a result, the protective clothing has better dust resistance in the areas where the first fabric is used.
  • the average single fiber diameter is determined by taking 10 images at a magnification of 500 using a scanning electron microscope (SEM) (SU3800, manufactured by Hitachi High-Technologies Corporation) and measuring 15 fibers per image. It can be measured by calculating the average value after measuring the fiber diameter.
  • SEM scanning electron microscope
  • the material of the fibers constituting the first meltblown nonwoven fabric is not particularly limited.
  • fiber materials include polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polylactic acid, polycarbonate, polystyrene, polyphenylene sulfite, fluororesins, and mixtures thereof.
  • the main component of the fiber material is a polyolefin-based resin from the viewpoint of the productivity of the fabric and the texture of the fabric.
  • the polyolefin-based resin is preferably polypropylene from the viewpoint that dust resistance is likely to be improved by electret processing.
  • the first melt-blown nonwoven fabric containing a polyolefin resin as a main component means that the first melt-blown nonwoven fabric contains a polyolefin resin in an amount of 80% by mass or more with respect to the entire first melt-blown nonwoven fabric. It means to contain.
  • the first meltblown nonwoven fabric preferably contains 90% by mass or more of the polyolefin resin relative to the entire first meltblown nonwoven fabric, and more preferably consists of only the polyolefin resin.
  • the meltblown nonwoven fabric layer is made of only a polyolefin resin
  • the meltblown nonwoven fabric may contain an additive such as a hindered amine as long as the effects of the present embodiment are not impaired.
  • the first meltblown nonwoven fabric can be obtained by a meltblowing method.
  • the meltblowing method is generally a method in which a thermoplastic polymer extruded from a spinneret is jetted with hot air to make it finer into fibers, and a web is formed by utilizing the self-bonding properties of these fibers.
  • Spinning conditions in the meltblowing method include polymer discharge rate, nozzle temperature, air pressure, and the like.
  • a nonwoven fabric having a desired fiber diameter can be obtained by optimizing these spinning conditions. Specifically, when producing the fibers used in the first meltblown nonwoven fabric, it is easy to reduce the fineness of the fibers by reducing the amount of resin discharged, increasing the discharge speed, and increasing the degree of stretching of the fibers.
  • the first meltblown nonwoven fabric is preferably an electrically charged meltblown nonwoven fabric. Since the first meltblown nonwoven fabric is an electrically charged meltblown nonwoven fabric, the protective clothing can achieve both high air permeability and high dust resistance of the first fabric.
  • the material of the fibers constituting the first spunbonded nonwoven fabric is not particularly limited.
  • fiber materials include polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polylactic acid, polycarbonate, polystyrene, polyphenylene sulfite, fluororesins, and mixtures thereof.
  • the fiber material is preferably polyolefin from the viewpoint of fabric productivity and texture.
  • a spunbond nonwoven fabric is a nonwoven fabric obtained by the spunbond method.
  • the method for producing the spunbond nonwoven fabric is not particularly limited.
  • a spunbond nonwoven fabric is produced by melting a polymer composition, extruding it from a spinneret, stretching it, stacking it on a conveyor belt or the like, forming it into a web, and then subjecting it to heat embossing or the like. It is obtained by fusing the fibers together (spunbond method).
  • the average single fiber diameter of the fibers constituting the first spunbond nonwoven fabric is preferably 18 ⁇ m or more, more preferably 19 ⁇ m or more, and even more preferably 20 ⁇ m or more. Also, the average single fiber diameter of the fibers is preferably 30 ⁇ m or less, more preferably 28 ⁇ m or less, and even more preferably 26 ⁇ m or less.
  • the first spunbond nonwoven fabric can have an increased sheet strength and a larger opening size. Therefore, the protective clothing has improved breathability in the region where the first fabric is used.
  • the opening size of the first spunbonded nonwoven fabric is small. Therefore, the protective clothing is more dustproof.
  • the first spunbond nonwoven fabric may be imparted with functions such as water repellency, oil repellency, antistatic, flame retardancy, antibacterial and antifungal properties, for example.
  • the method of laminating the first spunbond nonwoven fabric and the first meltblown nonwoven fabric in the manufacturing process of the first fabric is not particularly limited.
  • the first fabric preferably comprises the first meltblown nonwoven fabric having charge.
  • the first meltblown nonwoven fabric and the first spunbond nonwoven fabric which are separately produced and have an electrostatic charge, need to be bonded together using an adhesive (first adhesive) or bonded together by embossing. be.
  • the first meltblown nonwoven fabric and the first spunbond nonwoven fabric are preferably bonded with an adhesive (first adhesive).
  • first adhesive an adhesive
  • the content of the adhesive contained between the layers of the first meltblown nonwoven fabric and the first spunbond nonwoven fabric is preferably 0.5 g/m 2 or more, and is 1.0 g/m 2 or more. is more preferable.
  • the adhesive content is preferably 5.0 g/m 2 or less, more preferably 2.0 g/m 2 or less.
  • the content of the adhesive is equal to or higher than the above lower limit, the interlayer adhesion between the first spunbond nonwoven fabric and the first meltblown nonwoven fabric is more excellent.
  • the protective clothing is less susceptible to delamination when the wearer works while wearing the protective clothing.
  • the content of the adhesive is equal to or less than the above upper limit value, the first fabric has high breathability. As a result, the first fabric has excellent flexibility.
  • the first fabric may further comprise a third spunbond nonwoven fabric.
  • the first fabric preferably comprises a first spunbond nonwoven fabric, a first meltblown nonwoven fabric and a third spunbond nonwoven fabric laminated in this order.
  • the protective garment When such a first fabric is used to fabricate a protective garment such that the first spunbond nonwoven is positioned on the wearer's side, the protective garment will have a third spunbond nonwoven further outwardly of the first meltblown nonwoven. A nonwoven is placed.
  • the protective garment tends to protect the first meltblown nonwoven from external stress by the third spunbond nonwoven. Therefore, the performance of the protective clothing, such as dust resistance, is less likely to deteriorate due to scratches on the first meltblown nonwoven fabric. Furthermore, such protective clothing has excellent abrasion resistance performance.
  • the third spunbonded nonwoven fabric may be the same as the first spunbonded nonwoven fabric.
  • the first fabric may consist of only the first spunbond nonwoven fabric and the first meltblown nonwoven fabric.
  • the first meltblown nonwoven fabric is preferably in direct contact with the sheet material. This makes it possible to reduce the manufacturing cost of the protective clothing.
  • Meltblown nonwoven fabrics are inferior in abrasion resistance and easily damaged, so when used for protective clothing, as described above, the spunbond nonwoven fabric is laminated on the surface and used as an S/M/S structure. By covering, it is possible to have an M/S configuration in which the melt-blown nonwoven fabric is exposed on the surface.
  • the second fabric of the protective clothing of the present embodiment may have a lower limit of water pressure resistance of 400 mmH2O or more, preferably 700 mmH2O or more, and more preferably 1000 mmH2O or more.
  • the upper limit of water pressure resistance of the second fabric is not particularly limited.
  • the water pressure resistance of the second fabric is preferably 2000 mmH2O or less, more preferably 1500 mmH2O or less. Since the water pressure resistance is equal to or higher than the above lower limit value, the protective clothing exhibits excellent water pressure resistance. On the other hand, since the water pressure resistance is equal to or less than the upper limit value described above, the productivity of the fabric is improved, thereby improving the productivity of the protective clothing.
  • the method for measuring the water pressure resistance is not particularly limited. In this embodiment, the water pressure resistance is measured by the JIS L 1092:2009 low pressure method using a Hydrotester (FX3000-IV, manufactured by TEXTEST).
  • the second fabric is preferably made of non-woven fabric.
  • the protective clothing can increase the tensile strength and tear strength of the fabric, making it more durable.
  • the protective clothing is more dustproof and flexible.
  • the second fabric is made of nonwoven fabric, it preferably has a laminated structure of the second spunbond nonwoven fabric and the second meltblown nonwoven fabric. As a result, the protective clothing can increase the tensile strength and tear strength of the fabric, making it more durable. Also, the protective clothing is more dustproof and flexible.
  • the average single fiber diameter of the fibers constituting the second melt-blown nonwoven fabric is preferably 0.1 ⁇ m or more, more preferably 0.4 ⁇ m or more, and 0.8 ⁇ m or more. is more preferred.
  • the average single fiber diameter of the fibers constituting the second meltblown nonwoven fabric is preferably 6.0 ⁇ m or less, more preferably 4.0 ⁇ m or less, and even more preferably 3.0 ⁇ m or less.
  • the material of the fibers that make up the second meltblown nonwoven fabric is not particularly limited.
  • fiber materials include polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polylactic acid, polycarbonate, polystyrene, polyphenylene sulfite, fluororesins, and mixtures thereof.
  • the main component of the fiber material is a polyolefin-based resin from the viewpoint of the productivity of the fabric and the texture of the fabric.
  • the second melt blown nonwoven fabric is mainly composed of a polyolefin resin, and the second melt blown nonwoven fabric contains a polyolefin resin in an amount of 80% by mass or more with respect to the entire second melt blown nonwoven fabric. It means to contain.
  • the second meltblown nonwoven fabric preferably contains 90% by mass or more of the polyolefin resin with respect to the entire second meltblown nonwoven fabric, and more preferably consists of only the polyolefin resin.
  • the second meltblown nonwoven fabric can be obtained in the same manner as the first meltblown nonwoven fabric.
  • the material of the fibers constituting the second spunbonded nonwoven fabric is not particularly limited.
  • fiber materials include polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polylactic acid, polycarbonate, polystyrene, polyphenylene sulfite, fluororesins, and mixtures thereof.
  • the fiber material is preferably polyolefin from the viewpoint of fabric productivity and texture.
  • the average single fiber diameter of the fibers constituting the second spunbond nonwoven fabric is preferably 6.5 ⁇ m or more, more preferably 7.5 ⁇ m or more, and even more preferably 8.4 ⁇ m or more. Also, the average single fiber diameter of the fibers is preferably 11.9 ⁇ m or less, more preferably 11.2 ⁇ m or less, and even more preferably 10.6 ⁇ m or less.
  • the second spunbond nonwoven fabric having an average single fiber diameter of not less than the above-described lower limit value can increase the tensile strength and tear strength of the fabric. This results in a more robust protective garment.
  • the average single fiber diameter is equal to or less than the above upper limit, the opening size of the second spunbonded nonwoven fabric is small. Therefore, in the protective clothing, the dust resistance of the second fabric is superior, and the flexibility of the portion using the second fabric is further improved.
  • the second spunbond nonwoven fabric may be imparted with functions such as water repellency, oil repellency, antistatic, flame retardancy, antibacterial and antifungal properties.
  • the second spunbond nonwoven and the second meltblown nonwoven may be directly laminated or adhered by an adhesive (second adhesive).
  • the second fabric preferably has a middle layer and respective outer layers provided on both surfaces of the middle layer.
  • each outer layer is preferably a second spunbond nonwoven
  • the middle layer includes one or more layers of the second meltblown nonwoven, S/M/S, S/M/M/S, S/ An M/M/M/S configuration can be mentioned, and it is preferable that the water pressure resistance is 1000 mmH2O .
  • the number and types of middle layers are not particularly limited.
  • the content of the second melt blown nonwoven fabric is preferably 1% by mass or more and 20% by mass or less, and 5% by mass or more and 15% by mass or less, relative to the total mass of the second fabric. is more preferred.
  • the content of the second spunbond nonwoven fabric in the second fabric is preferably more than 80% by mass and less than 99% by mass.
  • the content of the adhesive contained between the layers of the second spunbond nonwoven fabric and the second meltblown nonwoven fabric is preferably greater than 0 g/m 2 and less than or equal to 0.4 g/m 2 . Since the content of the adhesive is equal to or less than the above upper limit, the second cloth has extremely excellent flexibility. For the same reason, the adhesive content is more preferably 0.2 g/m 2 or less, and it is particularly preferred that no adhesive is used.
  • the second fabric is used as the part B of the protective clothing and the sheet material, and the second fabric is required to have high water pressure resistance.
  • the breathability of the suit is achieved by the first fabric located in section A. Therefore, the second fabric does not require high breathability compared to the first fabric.
  • the method of laminating the second spunbond nonwoven fabric and the second meltblown nonwoven fabric is not particularly limited as long as it does not impair the effects of the present embodiment.
  • the second meltblown nonwoven fabric and the second spunbond nonwoven fabric has a surface roughness measured by the KES method of 1.0 ⁇ m or more. It is more preferably 6 ⁇ m or more. Also, the surface roughness is preferably 3.0 ⁇ m or less, more preferably 2.8 ⁇ m or less.
  • the surface roughness is equal to or less than the above upper limit, foreign matter such as dust is less likely to adhere to the second cloth, and foreign matter such as dust adheres to the second cloth, and is easy to remove.
  • the surface roughness is equal to or higher than the above lower limit value, the second fabric has moderate smoothness and can suppress occurrence of partial unevenness in dust resistance.
  • the surface roughness by the KES method is measured using an automatic texture measuring device (KESFB-4-AUTO-A, manufactured by Kato Tech Co., Ltd.), standard applied pressure: 10 gf, contact: diameter 0 5 mm piano wire, contact length: 5 mm, moving speed: 1 mm/sec, tensile tension: 400 g.
  • KESFB-4-AUTO-A automatic texture measuring device
  • the protective clothing 1 has the first fabric with excellent air permeability arranged in the portion A covering the pectoral muscles of the wearer. Further, the portion A is covered with a sheet-like material 4, and the sheet-like material 4 constitutes a second fabric having high water pressure resistance. As a result, the protective clothing 1 is excellent in air permeability, water pressure resistance and dust resistance at the same time.
  • portions A made of the first fabric are provided at two locations on the left and right sides of the fastener 3 of the body portion 2 .
  • the protective clothing of this embodiment may be provided with the portion A on either the left or right side.
  • the protective clothing 1 of this embodiment may further include a hood 5.
  • the hood 5 provided by the protective clothing 1 is the part of the protective clothing 1 that covers the wearer's head when the protective clothing 1 is worn.
  • Body portion 2 and hood 5 are preferably integrated.
  • Protective clothing in which the body part and the hood are separate pieces are likely to create a gap between the body part and the hood when the jacket having the body part and the hood are worn.
  • the body and the hood need to be provided with a large number of portions that overlap each other. Such a portion where the body part and the hood overlap tends to deteriorate in breathability and flexibility.
  • the protective clothing 1 in which the body portion 2 and the hood 5 are integrated, there is no gap between the body portion 2 and the hood 5, and there is no overlap between the body portion 2 and the hood 5. not exist. Therefore, the protective clothing 1 can be excellent in both comfort and workability when worn.
  • the hood 5 can be constructed from the second fabric.
  • the protective clothing 1 of this embodiment may include a lower garment 7 in addition to the upper garment 6 including the body portion 2 . It is preferable that the upper garment 6 and the lower garment 7 be integrated. Protective clothing in which the upper and lower garments are separate pieces is likely to create a gap between the upper and lower garments when the upper and lower garments are worn. In this case, in order to prevent gaps, when the protective clothing is worn, it is necessary to provide a large amount of overlap between the outer garment and the lower garment. Breathability and flexibility are likely to be reduced in such a portion where the upper garment and the lower garment overlap.
  • the protective clothing 1 in which the upper garment 6 and the lower garment 7 are integrated, there is no gap between the upper garment 6 and the lower garment 7, and the upper garment 6 and the lower garment 7 overlap each other. not exist. Therefore, the protective clothing 1 can be excellent in both comfort and workability when worn.
  • the lower garment 7 can be mainly composed of the second fabric.
  • the portion A made of the first fabric and the sheet-like material covering the portion A may be provided in a part of the lower garment 7 .
  • the portion A may be provided around the waist of the lower garment 7 or the like.
  • the protective clothing 1 can maintain high water pressure resistance while improving breathability around the waist.
  • FIG. 4 is a schematic front view of protective clothing 1a of one embodiment (second embodiment) of the present invention.
  • FIG. 5 is a schematic rear view of protective clothing 1a of one embodiment (second embodiment) of the present invention. In this embodiment, descriptions of configurations common to the first embodiment will be omitted as appropriate.
  • the protective clothing 1a has a fastener 3 for the wearer to put on and take off the protective clothing 1a. There is no zipper on the front body part. Therefore, in the protective clothing 1a, it is easy to provide the first fabric in the portion A covering the pectoral muscles of the wearer.
  • the dimensions of the portion A to which the first fabric is applied are not particularly limited.
  • the dimensions of part A are 15 cm long and 30 cm wide.
  • the protective clothing 1a of the present embodiment is likely to have better breathability.
  • the fastener 3 is provided along the length direction of the body part 2 on the back of the protective clothing 1a.
  • the protective clothing may be provided with fasteners on the sides of the jacket 6 .
  • FIG. 6 is a schematic front view of protective clothing 1b of one embodiment (third embodiment) of the present invention.
  • the protective clothing 1b is provided separately with an upper garment 6b and a lower garment 7b.
  • descriptions of configurations common to the first embodiment will be omitted as appropriate.
  • the protective clothing 1b of this embodiment has no fasteners on the jacket 6b. Therefore, the wearer puts on and takes off the jacket 6b through the opening near the waist. As a result, in the protective clothing 1b of this embodiment, it is easy to provide the first fabric in the portion A covering the pectoral muscles of the wearer.
  • the dimensions of the portion A to which the first fabric is applied are not particularly limited.
  • the dimensions of part A are 15 cm long and 30 cm wide.
  • the protective clothing 1b is likely to have better breathability.
  • the present invention for solving the above problems mainly includes the following configurations.
  • Protective clothing comprising a body portion, the body portion having a portion A that covers the pectoralis major muscle of the wearer when worn, and a sheet-like object attached to the body portion and covering the portion A. , the sheet-like object is attached to a position above the portion A in the length direction of the protective clothing, and the protective clothing includes a first fabric having an air permeability of 30 cm 3 /cm 2 /second or more.
  • a second fabric having a water pressure resistance of 400 mmH 2 O or more, the first fabric being disposed in the portion A, and the first spunbond nonwoven fabric and the first meltblown nonwoven fabric Protective clothing having a laminated structure, wherein the second fabric constitutes the sheet-like material and is arranged in a portion other than the portion A of the protective clothing.
  • the protective clothing has a first fabric with excellent air permeability in the portion A covering the wearer's pectoral muscles. Further, the portion A is covered with a sheet-like material, and the sheet-like material constitutes a second cloth having high water pressure resistance. As a result, the protective clothing is simultaneously excellent in breathability, water pressure resistance and dust resistance.
  • the sheet-like object covers the entire portion A and is attached to the body portion at a position above the portion A in the length direction of the protective clothing, and the portion a second attachment part attached to the body part so as to form a gap for communication between the part A and the outside at a lateral position or a lower position in the length direction of the protective clothing with respect to A. , (1).
  • the sheet-like material is attached to the body portion at the upper position of the portion A. Therefore, for example, when water falls from above or diagonally above, the protective clothing easily protects the portion A with a sheet-like material, and easily prevents water from entering the protective clothing from the portion A. Also, the sheet-like material is attached to the body part so as to form a gap. Therefore, the protective clothing is easy to ensure breathability.
  • the bulk density of the first melt-blown nonwoven fabric is 0.05 to 0.18 g/cm 3 , the thickness of the first melt-blown nonwoven fabric is 70 to 200 ⁇ m, and the first melt-blown nonwoven fabric is , a meltblown nonwoven fabric having an electrostatic charge, wherein the first spunbond nonwoven fabric and the first meltblown nonwoven fabric are bonded by an adhesive, and the content of the adhesive is 0.5-5.0g/m 2 ;
  • the protective clothing according to (1) or (2).
  • the protective clothing can easily achieve both excellent breathability and dust resistance.
  • the protective clothing has excellent flexibility, and the first fabric is resistant to delamination.
  • the first fabric is composed only of the first spunbond nonwoven fabric and the first meltblown nonwoven fabric, and the first meltblown nonwoven fabric is in direct contact with the sheet-like material, ( Protective clothing according to any one of 1) to (3).
  • meltblown nonwoven fabrics have poor wear resistance and are easily damaged, so when used for protective clothing, spunbond nonwoven fabrics are laminated on the surface and used as an S/M/S structure, but the surface of the meltblown nonwoven fabric is covered with a sheet-like material. Thereby, it is possible to have an M/S configuration in which the melt-blown nonwoven fabric is exposed on the surface.
  • the protective clothing can increase the tensile strength and tear strength of the fabric, making it more durable. Also, the protective clothing is more dustproof and flexible.
  • the protective clothing can increase the tensile strength and tear strength of the fabric, making it more durable. Also, the protective clothing is more dustproof and flexible.
  • the second meltblown nonwoven fabric has an average single fiber diameter of 0.1 to 6.0 ⁇ m, and the second spunbond nonwoven fabric has an average single fiber diameter of 6.5 to 11.9 ⁇ m;
  • the protective clothing has better dust resistance and breathability.
  • the second fabric has a middle layer and outer layers provided on both surfaces of the middle layer, each of the outer layers being a second spunbond nonwoven fabric, and the middle layer 2 , and has a water pressure resistance of 1000 mmH2O or more.
  • the protective clothing has better dust resistance, breathability, and water pressure resistance.
  • FIG. 7 is a conceptual diagram of an SEM image field of view of a cross section of fabric. A method for measuring the thickness of each layer constituting the fabric will be described with reference to FIG. The schematic view of the SEM image field of FIG.
  • the length of the parting line was read to the first decimal place when the unit of the length of the parting line was ⁇ m, and was rounded off to the first decimal place.
  • the above measurement is performed on 10 SEM images of different parts of the cross section of the fabric, and the average value of 50 measured values of the length of the parting line overlapping the spunbond nonwoven fabric layer is the spunbond nonwoven fabric. It is the thickness of the layer.
  • the thickness of the melt-blown nonwoven fabric layer was defined as the average value of 50 measurement values of the length of the parting lines overlapping the melt-blown nonwoven fabric layer.
  • a site 87 that looks like a cavity (that is, a site where no fibers are shown) is observed at the boundary between the spunbond nonwoven fabric layer and the meltblown nonwoven fabric layer in the SEM image, and when the site that looks like a cavity and the parting line overlap , assuming that this hollow portion was part of the meltblown nonwoven fabric layer, the length of the parting line overlapping the meltblown nonwoven fabric layer and the length of the parting line overlapping the spunbond nonwoven fabric layer were measured. That is, in one example shown in FIG. 7, what is indicated at 89 is the length of the split line 84 overlapping the meltblown nonwoven layer, and what is indicated at 88 is the length of the split line overlapping the spunbond nonwoven layer. is the length of line 84; When the fabric further comprises a spunbond nonwoven fabric layer, the thickness of the spunbond nonwoven fabric layer was measured by the same measuring method as that for measuring the thickness of the spunbond nonwoven fabric layer.
  • 15 fibers constituting the spunbond nonwoven fabric layer were randomly selected from the spunbond nonwoven fabric layer shown in the SEM image, and the fiber diameters of these fibers were measured. Then, the average of the obtained 15 measured values was taken as the average fiber diameter of the fibers constituting the spunbond nonwoven fabric layer.
  • 15 fibers constituting the melt-blown nonwoven fabric layer were randomly selected from the melt-blown nonwoven fabric layer shown in the SEM image, and the fiber diameters of these fibers were measured. Then, the average of the obtained 15 measured values was taken as the average fiber diameter of the fibers constituting the melt blown nonwoven fabric layer.
  • the fiber diameter of the fiber was read to the first decimal place when the fiber diameter was expressed in ⁇ m, and was rounded off to the first decimal place.
  • the average fiber diameter of the fibers constituting the spunbond nonwoven fabric layer is the same as the above method for measuring the average fiber diameter of the fibers constituting the spunbond nonwoven fabric layer. It was measured by the same measuring method.
  • Air permeability The air permeability of the fabric was measured based on JIS L 1913-2010 Frazier method, and the amount of air passing through a 15 cm x 15 cm test piece. The obtained average value of three measurements of the amount of passing air was taken as the air permeability.
  • Adhesive content Five test pieces of 100 mm square fabric were prepared, and left to stand for 24 hours in an atmosphere with a temperature of 20 ° C. and a humidity of 65% RH, and then each of the five test pieces The initial mass (g) of was measured. Next, the five test pieces were immersed in 200 ml of solvent (xylene) set at a temperature of 50° C. and filled in a 300 ml container for 6 hours. Then, the five test pieces were again immersed in 200 ml of solvent (xylene) set at a temperature of 50° C. and packed in a 300 ml container for 6 hours. Subsequently, the five test pieces were allowed to stand in an atmosphere at a temperature of 140° C. for 2 hours.
  • solvent xylene
  • Adhesive content (g/m 2 ) (initial mass (g) - mass after removing adhesive (g))/0.01
  • Comfort test method After the monitor wore the protective clothing (M size), the monitor evaluated the temperature, humidity and comfort (humidity) inside the clothing after going up and down the step. The above comfort test was conducted on the same protective clothing by 3 monitors, and the most common test result among the 3 monitors' evaluations was adopted as the final test result. The three monitors who participated in the comfort test were male, weighed 58-64 kg, and were 168-174 cm tall. ⁇ Test method> Each monitor was subjected to a comfort test in the order of S1, S2, S3, S4, and S5 below. S1: Wear only pants (88% polyester, 12% polyurethane) and cotton ankle socks.
  • S2 Attach a temperature/humidity sensor around the pectoralis major muscle of the left chest, wear protective clothing, and wear sneakers.
  • Tempoture and humidity sensor SHA-3151, manufactured by T&D, data logger: T&D TR-72wf, manufactured by T&D
  • S3 Sit in a room with an atmosphere of 20°C and 50% RH for 30 minutes and remain still.
  • S4 Move to a room with an atmosphere of 30° C. and 50% RH, and perform stepping up and down for 20 minutes in the same atmosphere. (stepping step interval: 15 steps/10 seconds, stepping height 20cm)
  • S5 Measure the temperature and humidity inside the clothes after 20 minutes, and evaluate the comfort. ⁇ Evaluation Criteria> Each monitor evaluated comfort according to the following criteria. A: There was no stuffiness, and comfort was very excellent. B: Less stuffiness and excellent comfort. C: A lot of stuffiness and poor comfort.
  • Example 1 Two sheets of polypropylene spunbond nonwoven fabric (basis weight: 20 g/m 2 ) and one electrically charged polypropylene meltblown nonwoven fabric (basis weight: 15 g/m 2 , bulk density: 0.14 g/cm 3 , thickness: 109 ⁇ m, fiber diameter 6 ⁇ m).
  • a first fabric was prepared in which a spunbond nonwoven fabric, a meltblown nonwoven fabric, and a spunbond nonwoven fabric were laminated in this order and the respective layers were bonded.
  • the adhesion between the layers of the first fabric was performed by disposing a hot-melt adhesive containing synthetic rubber as a main component between the layers using a spray.
  • the content of hot melt adhesive in each layer of the first fabric was 2.0 g/m 2 per layer.
  • the air permeability of the first fabric was 94 cm 3 /cm 2 /sec, and the water pressure resistance was 202 mmH 2 O.
  • a polypropylene melt-blown nonwoven fabric (11 g/m 2 basis weight, 1 ⁇ m fiber diameter) was directly formed on one side of the polypropylene spunbond nonwoven basis (27 g/m 2 basis weight) to obtain a laminate.
  • a polypropylene spunbond nonwoven fabric (basis weight: 27 g/m 2 ) was directly formed on the polypropylene meltblown nonwoven fabric side of this laminate to obtain a second fabric.
  • the content of hot melt adhesive in each layer of the second fabric was 0 g/m 2 per layer.
  • the air permeability of the second fabric was 8 cm 3 /cm 2 /sec, and the water pressure resistance was 1070 mmH 2 O.
  • Example 1 After that, a plurality of parts corresponding to a plurality of regions constituting the protective clothing were cut out from the obtained first fabric and the obtained second fabric. These multiple parts were then sewn together with a sewing machine to form a coverall type protective clothing with a hood. The obtained protective clothing was used as the protective clothing of Example 1.
  • FIGS 1 and 2 show the conceptual diagrams of the obtained protective clothing.
  • the protective clothing 1 has a pair of sleeve portions, a body portion 2, a lower garment 6 and a hood 5.
  • the front body portion has a portion A that covers the wearer's pectoral muscles.
  • the dimensions of the portion A are 15 cm long and 15 cm wide, and are provided at two locations on the left and right sides of the fastener 3 .
  • the portion A is covered with a sheet-like material, and the size of the sheet-like material is 20 cm long and 20 cm wide.
  • the portion A is made of the first fabric, and the other portions and the sheet material other than the portion A are made of the second fabric.
  • the protective clothing 1 of Example 1 has a sewn part in which the first fabric and the second fabric are sewn in the front body part (front body part), and furthermore, the first fabric is sewn on the upper part of the sheet-like article.
  • 2nd fabric and 2nd fabric are sewn to the 1st attachment part and the 2nd attachment part of the horizontal position on both sides, the 1st attachment part sews 20 cm in length, and the 2nd attachment part sews 5 cm in length. It has a sewn part.
  • Table 1 shows the properties of the first fabric used, the properties of the second fabric used, and the evaluation results.
  • Comparative example 1 A fabric similar to the second fabric of the protective clothing of Example 1 was prepared as the second fabric. After that, a plurality of parts corresponding to a plurality of regions constituting the protective clothing were cut out from the obtained second fabric. These multiple parts were then sewn together with a sewing machine to form a coverall type protective clothing with a hood. The obtained protective clothing was used as the protective clothing of Comparative Example 1.
  • FIG. 8 is a conceptual diagram of the front surface of the protective clothing 9 of Comparative Example 1.
  • FIG. Protective clothing 9 includes a pair of sleeve portions 91 , a body portion 92 , a lower garment 93 and a hood 94 .
  • the sleeve portion 91, the body portion 92, the lower garment 93, and the hood 94 are made of the second fabric. That is, the protective clothing 9 of Comparative Example 1 is composed only of the second fabric.
  • Table 1 shows the type of fabric used for each part and the evaluation results.
  • Example 1 which is a protective clothing comprising a first fabric with an air permeability of 94 cm 3 /cm 2 /sec and a second fabric with a water pressure resistance of 1070 mmH 2 O, and protective clothing consisting only of the second fabric. Comparative Example 1, which is clothing, is summarized.
  • Example 1 the temperature inside the protective clothing was 33°C and the relative humidity was 77% or less when the protective clothing was worn. Therefore, this protective garment received an A or B rating in the wearer's comfort test. Therefore, the wearer wearing Example 1 was comfortable.
  • Comparative Example 1 the temperature inside the protective clothing when worn was 34° C. and the relative humidity was 82%. Therefore, the protective clothing was evaluated as C in the wearer's comfort test, indicating poor comfort.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Textile Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
PCT/JP2022/003684 2021-02-01 2022-01-31 防護服 WO2022163855A1 (ja)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001303317A (ja) * 2000-04-21 2001-10-31 Uni Charm Corp 使い捨て上衣
JP2003013318A (ja) * 2001-06-21 2003-01-15 Knut Jaeger 衣服の通気システム
JP2011117121A (ja) * 2011-03-05 2011-06-16 Hamure Co Ltd 通気性作業用ウェア
JP2014009954A (ja) * 2012-06-27 2014-01-20 Osao Makino レインコート
WO2020009136A1 (ja) * 2018-07-04 2020-01-09 東レ株式会社 防護服
CN210353272U (zh) * 2019-07-26 2020-04-21 徐文跃 一种防水透气雨衣

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001303317A (ja) * 2000-04-21 2001-10-31 Uni Charm Corp 使い捨て上衣
JP2003013318A (ja) * 2001-06-21 2003-01-15 Knut Jaeger 衣服の通気システム
JP2011117121A (ja) * 2011-03-05 2011-06-16 Hamure Co Ltd 通気性作業用ウェア
JP2014009954A (ja) * 2012-06-27 2014-01-20 Osao Makino レインコート
WO2020009136A1 (ja) * 2018-07-04 2020-01-09 東レ株式会社 防護服
CN210353272U (zh) * 2019-07-26 2020-04-21 徐文跃 一种防水透气雨衣

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