WO2020250565A1 - 防護服 - Google Patents
防護服 Download PDFInfo
- Publication number
- WO2020250565A1 WO2020250565A1 PCT/JP2020/016425 JP2020016425W WO2020250565A1 WO 2020250565 A1 WO2020250565 A1 WO 2020250565A1 JP 2020016425 W JP2020016425 W JP 2020016425W WO 2020250565 A1 WO2020250565 A1 WO 2020250565A1
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- WIPO (PCT)
- Prior art keywords
- fabric
- protective clothing
- wearer
- woven fabric
- melt
- Prior art date
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Classifications
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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
- A41D13/02—Overalls, e.g. bodysuits or bib overalls
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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
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/08—Arm or hand
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/14—Air permeable, i.e. capable of being penetrated by gases
- A41D31/145—Air permeable, i.e. capable of being penetrated by gases using layered materials
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D2500/00—Materials for garments
- A41D2500/30—Non-woven
Definitions
- the present invention relates to protective clothing.
- Patent Document 1 discloses a cloth for protective clothing and a protective clothing composed of the above-mentioned fabric.
- the fabric described in Patent Document 1 has a structure in which a spunbonded nonwoven fabric, a charged melt blown nonwoven fabric, and a spunbonded nonwoven fabric are laminated in this order.
- the above-mentioned fabric for protective clothing has high rigidity and softness. Further, in the protective clothing using the above-mentioned fabric, the above-mentioned fabric is arranged on a portion covering the wearer's elbow when worn. In addition, when wearing protective clothing, the movement of the wearer's elbow tends to be large. From the above, the wearer wearing the above protective clothing tends to feel resistance when moving the elbow and is difficult to move. As a result, the above-mentioned protective clothing tends to reduce the workability of the wearer and is inferior in comfort.
- an object of the present invention is to provide protective clothing having excellent dust resistance and comfort, as well as excellent workability.
- the protective clothing of the present invention that solves the above problems is a protective clothing provided with a pair of sleeve portions and a body portion, and one of the sleeve portions of the pair of sleeve portions is worn by the wearer when the protective clothing is worn.
- the sleeve portion of the right arm is provided with a portion A covering the elbow joint of the right arm
- the other sleeve portion is provided with a portion B covering the elbow joint of the wearer's left arm when wearing the protective suit
- the body portion is worn when wearing the protective suit.
- the first fabric is arranged in the portion C and has a laminated structure of the first spunbonded non-woven fabric and the first melt-blown non-woven fabric, and the second fabric is the portion A.
- a protective suit which is arranged in the portion B and has a laminated structure of a second spunbonded non-woven fabric and a second melt-blown non-woven fabric.
- FIG. 1 is a conceptual diagram of an SEM image field of view of a cross section of the fabric.
- FIG. 2 is a conceptual diagram of the front surface of the protective clothing according to the first embodiment of the present invention.
- FIG. 3 is a conceptual diagram of the back surface of the protective clothing according to the first embodiment of the present invention.
- FIG. 4 is a conceptual diagram of the front surface of the protective clothing of Example 7, which is another embodiment of the present invention.
- FIG. 5 is a conceptual diagram of the back surface of the protective clothing of Example 7, which is another embodiment of the present invention.
- FIG. 6 is a conceptual diagram of the front surface of the protective clothing of Example 8, which is another embodiment of the protective clothing of the present invention.
- FIG. 1 is a conceptual diagram of an SEM image field of view of a cross section of the fabric.
- FIG. 2 is a conceptual diagram of the front surface of the protective clothing according to the first embodiment of the present invention.
- FIG. 3 is a conceptual diagram of the back surface of the protective clothing according to the first embodiment of
- FIG. 7 is a conceptual diagram of the back surface of the protective clothing of Example 8, which is another embodiment of the protective clothing of the present invention.
- FIG. 8 is a conceptual diagram of the front surface of the protective clothing of Comparative Example 3, which is an embodiment of the conventional protective clothing.
- FIG. 9 is a conceptual diagram of the back surface of the protective clothing of Comparative Example 3, which is an embodiment of the conventional protective clothing.
- FIG. 10 is a conceptual diagram of the front surface of the protective clothing of Comparative Example 4, which is another embodiment of the conventional protective clothing.
- FIG. 11 is a conceptual diagram of the back surface of the protective clothing of Comparative Example 4, which is another embodiment of the conventional protective clothing.
- FIG. 12 is a conceptual diagram of the front surface of the protective clothing of the tenth embodiment of the present invention.
- FIG. 13 is a conceptual diagram of the back surface of the protective clothing of Example 10, which is an embodiment of the present invention.
- FIG. 14 is a conceptual diagram of the front surface of the protective clothing of Example 11 which is an embodiment of the present invention.
- FIG. 15 is a conceptual diagram of the back surface of the protective clothing of Example 11 which is an embodiment of the present invention.
- the protective garment of one embodiment of the present invention is a protective garment including a pair of sleeve portions and a body portion.
- one sleeve comprises a portion A that covers the wearer's right arm elbow joint when wearing protective clothing, and the other sleeve portion provides the wearer's left arm elbow joint when wearing protective clothing.
- a portion B for covering the above is provided.
- the body portion includes a portion C that covers the pectoralis major muscle of the wearer when wearing protective clothing.
- the protective clothing has a first fabric having a breathability of 30 cm 3 / cm 2 / sec or more and a second fabric having a rigidity of 80 mm or less.
- the first fabric is arranged in the portion C and has a laminated structure of the first spunbonded non-woven fabric and the first melt-blown nonwoven fabric.
- the second fabric is arranged in parts A and B and has a laminated structure of a second spunbonded non-woven fabric and a second melt-blown non-woven fabric.
- the "body” means a portion corresponding to 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. That is, the wearer has a height of 171 cm, an upper arm length of 32 cm, a cervical / acromion straight line distance of 15 cm, a tibial fossa height of 140 cm, a tibial midpoint height of 128 cm, and an anterior axilla.
- the width is 34 cm
- the straight line distance between the lower corners of the scapula is 20 cm
- the thigh length is 44 cm
- the height of the upper tibial margin is 43 cm.
- the part C provided in the body part of the protective suit is the part of the protective suit that covers the pectoralis major muscle of the wearer when worn.
- the protective clothing of the present embodiment a highly breathable fabric, which is the first fabric, is used for the portion C. Thereby, the temperature and humidity near the pectoralis major muscle of the wearer can be brought close to the temperature and humidity of the outside air. As a result, the protective clothing of the present embodiment is excellent in comfort.
- Part A and part B of the protective suit are parts of the protective suit that cover the wearer's elbow joint when worn. Therefore, the portion A and the portion B are portions where the fabric of the protective clothing is bent according to the movement of bending and stretching the elbow of the wearer when the wearer bends and stretches the elbow. Therefore, for the portion A and the portion B, a second fabric having excellent flexibility is used. As a result, the protective clothing of the present embodiment improves the workability of the wearer when worn.
- a highly breathable fabric is placed on the protective clothing portion that covers the part of the protective clothing that makes the wearer more sensitive to the heat (for example, the pectoralis major muscle and the part around the pectoralis major muscle).
- a highly flexible fabric is placed on the part of the protective clothing that covers the part where the wearer moves frequently (for example, the elbow joint). Therefore, the protective clothing of the present embodiment adopting such a configuration can achieve both comfort when worn and workability when worn at a high level.
- the body part of the protective clothing is preferably provided with a part D that covers the wearer's subscapularis muscle when worn.
- the first dough is arranged in the portion D.
- the human body there are many important organs for the human body such as the heart and lungs near the subscapularis muscle. Therefore, the wearer is more likely to feel the heat in the subscapularis muscle and the part around the subscapularis muscle than in the parts other than these parts. Therefore, by using a highly breathable fabric, which is the first fabric, for the portion D, the temperature and humidity in the vicinity of the wearer's subscapularis muscle can be easily brought close to the temperature and humidity of the outside air. As a result, the protective clothing of the present embodiment is more comfortable.
- the first fabric having high breathability is arranged in both the portion C and the portion D.
- Such a form of protective clothing has the following effects.
- the front body of the protective clothing of the present embodiment receives wind. Due to the wind received by the front body, the air outside the protective suit easily enters the protective suit from part C of the protective suit, and then the air inside the protective suit enters the protective suit part D. Can be easily removed from the protective clothing.
- the air inside the protective suit is likely to be positively replaced with the air outside the protective suit, and the temperature and humidity inside the protective suit can be brought closer to the temperature and humidity of the outside air. As a result, the wearer can feel even more comfortable when wearing the protective clothing.
- the protective clothing of the present embodiment further includes a hood.
- the hood provided by the protective suit is a part of the protective suit that covers the wearer's head when the protective suit is worn. There is a brain on the wearer's head. Therefore, the wearer's head is more likely to feel the heat more sensitively than the parts other than the wearer's head.
- the protective clothing can bring the temperature and humidity inside the protective clothing close to the temperature and humidity of the outside air. As a result, the wearer can feel more comfortable when wearing the protective clothing.
- the protective clothing of the present embodiment further includes an undergarment.
- the undergarment comprises a portion E and a portion F.
- Part E is a portion of protective clothing that covers the knee joint of the wearer's right foot when worn.
- Part F is a portion of protective clothing that covers the knee joint of the wearer's left foot when worn.
- the portion E and the portion F are portions where the fabric of the protective clothing bends when the wearer bends and stretches the knee. Therefore, by using the flexible fabric which is the second fabric for the portion E and the portion F, the wearer can further improve the workability when wearing the protective clothing.
- the total area of the first fabric is preferably 15% or more, more preferably 20% or more, and more preferably 30% or more, based on the total area of the protective clothing. Is even more preferable.
- the total area of the first fabric is preferably 70% or less, more preferably 60% or less, and more preferably 40% or less with respect to the total area of the protective clothing. More preferred.
- the total area of the second fabric is preferably 30% or more, more preferably 40% or more, and more preferably 60% or more with respect to the total area of the protective clothing. Is even more preferable.
- the total area of the second fabric is preferably 85% or less, more preferably 80% or less, and further preferably 70% or less with respect to the total area of the protective clothing. preferable.
- the protective clothing of the present embodiment preferably includes a hood, and more preferably the body portion and the hood are integrated.
- Protective clothing in which the body part and the hood are separated tends to form a gap between the body part and the hood when the upper garment having the body part and the hood are worn.
- Such a portion where the body portion and the hood overlap tends to reduce breathability and flexibility.
- the protective clothing in which the body part and the hood are integrated there is no gap between the body part and the hood, and there is no part where the body part and the hood overlap with the other party. Therefore, the protective clothing can be excellent in both comfort and workability when wearing the protective clothing.
- the protective clothing of the present embodiment further includes a lower garment, and the upper garment and the lower garment are integrated.
- Protective clothing in which the upper garment and the lower garment are separate bodies tends to form a gap between the upper garment and the lower garment when the upper garment and the lower garment are worn.
- Such a portion where the upper garment and the lower garment overlap tends to reduce breathability and flexibility.
- the protective clothing in which the upper garment and the lower garment are integrated there is no gap between the upper garment and the lower garment, and there is no portion of the upper garment and the lower garment that overlap with the other party. Therefore, the protective clothing can be excellent in both comfort and workability when wearing the protective clothing.
- one of the pair of sleeve portions has a first sewn portion in which the first fabric and the second fabric are sewn, and the other sleeve portion is the first. It is preferable to have a second sewn portion in which the first fabric and the second fabric are sewn.
- the first sewn portion is formed between the elbow joint of the wearer's right arm and the base portion of the right arm when the protective clothing is worn, and the second sewn portion is formed when the protective clothing is worn by the wearer. It is more preferable that it is formed between the elbow joint of the left arm and the base portion of the left arm.
- the first sewn portion and the second sewn portion are formed between the elbow joint and the base portion of each arm, so that the side portion of the wearer is covered with the first fabric. It will be placed. As a result, breathability is likely to be improved in areas where sweat is likely to occur, such as armpits and peripheries. As a result, the protective garment is more comfortable to wear.
- the body portion has a portion G that covers the wearer's waist when the protective clothing is worn, and a third sewn portion in which the first fabric and the second fabric are sewn.
- the second fabric is arranged in the portion G
- the portion G has a gathered portion that tightens the wearer's waist
- the third sewn portion is more of the wearer than the gathered portion. It is preferably provided on the head side.
- the gathered portion tightens the wearer's waist, so that the protective clothing restricts the movement of air in the garment above and below the gathered portion. As a result, for example, the hot air generated in the lower body portion is unlikely to flow into the upper body portion.
- the third sewn portion is provided on the wearer's head side with respect to the gathered portion. That is, with the third sewn portion as a boundary, the second fabric is provided on the leg side portion of the third sewn portion, and the first portion having good breathability is provided on the head side portion of the third sewn portion.
- the dough is provided.
- the volume between the protective clothing and the wearer's body in the garment increases or decreases as the wearer moves.
- the air inside the garment is more likely to be discharged to the outside of the garment from the portion C made of the first fabric on the head side of the third sewn portion starting from the gathered portion.
- the air outside the clothes is easily taken in from the part C. Therefore, the protective suit easily replaces air inside and outside the protective suit. This allows the wearer to feel even more comfortable.
- First fabric having the protective clothing of the present embodiment may be any air permeability 30cm 3 / cm 2 / sec or more, preferably 60cm 3 / cm 2 / sec or more, 80cm 3 / cm 2 / More preferably, it is at least seconds.
- the air permeability of the first dough is preferably 150 cm 3 / cm 2 / sec or less, more preferably 130 cm 3 / cm 2 / sec or less, and 110 cm 3 / cm 2 / sec or less. Is even more preferable.
- the air permeability is equal to or higher than the above-mentioned lower limit value, the protective clothing can bring the environment inside the clothing closer to the environment outside the clothing when working while wearing the protective clothing. As a result, protective clothing is more comfortable. Further, when the air permeability is not more than the above-mentioned upper limit value, the protective clothing is more likely to improve the dust resistance against dust and chemical substances.
- the first fabric has a laminated structure of a first spunbonded non-woven fabric and a first melt-blown non-woven fabric.
- the bulk density of the first melt-blow non-woven fabric is preferably 0.05 g / cm 3 or more, and is 0, in order to make both the dust-proof property and the comfort of the first melt-blow non-woven fabric excellent. more preferably .08g / cm 3 or more, more preferably 0.10 g / cm 3 or more.
- the bulk density of the first melt blown non-woven fabric is preferably 0.18 g / cm 3 or less, preferably 0.16 g / cm. more preferably 3 or less, still more preferably 0.15 g / cm 3 or less.
- the thickness of the first melt blown non-woven fabric is preferably 200 ⁇ m or less, more preferably 160 ⁇ m or less, and 140 ⁇ m or less. It is more preferable to have.
- the thickness of the first melt-blown non-woven fabric is preferably 70 ⁇ m or more, more preferably 80 ⁇ m or more, and 90 ⁇ m. The above is more preferable.
- the average fiber diameter of the fibers constituting the first melt-blown non-woven fabric is preferably 3 ⁇ m or more, more preferably 4 ⁇ m or more, and further preferably 6 ⁇ m or more.
- the average fiber diameter of the fibers constituting the first melt-blown non-woven fabric is preferably 15 ⁇ m or less, more preferably 10 ⁇ m or less, and further preferably 8 ⁇ m or less.
- the material of the fibers constituting the first melt blown non-woven fabric is not particularly limited.
- the material of the fiber is polyolefin such as polyethylene and polypropylene, polyester such as polyethylene terephthalate and polylactic acid, polycarbonate, polystyrene, polyphenylene sulfide, fluororesin, and a mixture thereof.
- the fiber material contains a polyolefin resin as a main component from the viewpoint of improving the productivity of the fabric and the texture.
- the polyolefin-based resin is preferably polypropylene because the dustproof property is easily improved by electret processing.
- the first melt-blow non-woven fabric when the first melt-blow non-woven fabric contains a polyolefin-based resin as a main component, the first melt-blow non-woven fabric contains a polyolefin-based resin in an amount of 80% by mass or more with respect to the entire first melt-blow non-woven fabric. It means to contain.
- the first melt-blow non-woven fabric preferably contains a polyolefin-based resin in an amount of 90% by mass or more based on the total amount of the first melt-blow non-woven fabric, and more preferably only the polyolefin-based resin.
- the melt-blow non-woven fabric layer is made of only a polyolefin resin, the melt-blow non-woven fabric may contain an additive such as hindered amine as long as the effect of the present embodiment is not impaired.
- the first melt blown non-woven fabric can be obtained by the melt blow method.
- the melt blow method is generally a method in which a thermoplastic polymer extruded from a spinneret is finely divided into fibers by injecting hot air, and a web is formed by utilizing the self-fusion characteristics of the fibers.
- Spinning conditions in the melt blow method include polymer discharge rate, nozzle temperature, air pressure, and the like. By optimizing these spinning conditions, a non-woven fabric having a desired fiber diameter can be obtained. Specifically, when producing the fibers used for the first melt-blown non-woven fabric, the fibers can be easily made finer by reducing the amount of resin discharged, increasing the discharge speed, and increasing the degree of fiber stretching.
- the first melt-blow non-woven fabric is preferably a charged melt-blow non-woven fabric. Since the first melt-blow non-woven fabric is a charged melt-blow non-woven fabric, it is possible to achieve both high air permeability and high dust resistance of the first fabric.
- the first melt-blow non-woven fabric is preferably a charged melt-blow non-woven fabric, and the average fiber diameter of the fibers constituting the first melt-blow non-woven fabric is preferably 3 ⁇ m or more and 15 ⁇ m or less.
- the first fabric provided with such a first melt-blown non-woven fabric is extremely excellent in dust resistance and also extremely excellent in breathability.
- the material of the fiber constituting the first spunbonded non-woven fabric is not particularly limited.
- the material of the fiber is polyolefin such as polyethylene and polypropylene, polyester such as polyethylene terephthalate and polylactic acid, polycarbonate, polystyrene, polyphenylene sulfide, fluororesin, and a mixture thereof.
- the fiber material is preferably polyolefin from the viewpoint of improving the productivity of the fabric and the texture.
- the average fiber diameter of the fibers constituting the first spunbonded non-woven fabric is preferably 18 ⁇ m or more, more preferably 19 ⁇ m or more, and further preferably 20 ⁇ m or more.
- the average 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 spunbonded non-woven fabric may be provided with a function as long as the effect of the present embodiment is not impaired.
- the first spunbonded non-woven fabric may be provided with functions such as water repellency, oil repellency, antistatic, flame retardant, antibacterial, and antifungal.
- the method of laminating the first spunbonded nonwoven fabric and the first melt-blown nonwoven fabric in the manufacturing process of the first fabric is not particularly limited.
- the first fabric includes the first melt-blown non-woven fabric having a charge.
- first melt-blown non-woven fabric having a charge.
- the charged first melt-blown non-woven fabric and the first spunbonded non-woven fabric which are manufactured separately and independently, need to be bonded by using an adhesive (first adhesive) or by embossing. is there.
- first adhesive When the first fabric including the first charged melt blown non-woven fabric and the first charged melt blown non-woven fabric and the first spunbonded non-woven fabric are bonded by an adhesive (first adhesive).
- the content of the adhesive contained between the layers of the charged first melt-blown non-woven fabric and the first spunbonded non-woven fabric is preferably 0.5 g / m 2 or more, preferably 1.0 g / m 2 or more. Is more preferable.
- the content of the adhesive is preferably 5.0 g / m 2 or less, and more preferably 2.0 g / m 2 or less. When the content of the adhesive is at least the above-mentioned lower limit value, the adhesive force between the layers of the first spunbonded nonwoven fabric and the first melt-blown nonwoven fabric is more excellent.
- the protective clothing is less likely to be peeled off between layers when the wearer wears the protective clothing and performs work.
- the content of the adhesive is not more than the above-mentioned upper limit value
- the first fabric has high air permeability.
- the first dough has low rigidity and softness, and has excellent flexibility.
- the first fabric may further include a third spunbonded non-woven fabric.
- the first fabric is preferably a first spunbonded non-woven fabric, a first melt-blown non-woven fabric, and a third spunbonded non-woven fabric laminated in this order.
- the protective garment is made by using such a first fabric so that the third spunbonded non-woven fabric is arranged on the wearer side, the protective garment is further outside the first melt-blown non-woven fabric and the first spunbond Non-woven fabric is placed. As a result, the protective garment tends to protect the first melt blown non-woven fabric from external stress by the first spunbonded non-woven fabric.
- the protective clothing is less likely to deteriorate in performance such as dust resistance of the protective clothing due to scratches on the first melt blown non-woven fabric. Further, such protective clothing has excellent wear resistance.
- the third spunbonded non-woven fabric the same one as described above can be used as the first spunbonded non-woven fabric.
- the QF value of the first dough is preferably 0.30 or more, more preferably 0.90 or more, and even more preferably 1.20 or more.
- the QF value is obtained from the collection efficiency and the pressure loss.
- the QF value can be calculated by the formula of ⁇ Ln (T) / ⁇ P.
- T is the collection efficiency
- ⁇ P is the static pressure difference between the upstream and downstream of the sample when the collection efficiency T is measured.
- the QF value of the first dough is preferably higher than the QF value of the second dough.
- the protective clothing can selectively prevent dust in the air from entering the garment through the portion using the first fabric, which has high air permeability and low pressure loss, in the work environment. Can invade. Therefore, by increasing the QF value of the first fabric more than that of the second fabric, the protective garment further enhances the dust proof property of the entire protective garment beyond the expected dust proof property based on the simple fabric ratio. Can be done.
- the collection efficiency of the first dough is preferably 50% or more, more preferably 80% or more, and even more preferably 90% or more. Since the first fabric is placed near the wearer's important organs (part C that covers the pectoralis major muscle), it is possible to further enhance the wearer's safety by using a fabric with high collection efficiency. It becomes.
- the second fabric of the protective clothing of the present embodiment may have a rigidity of 80 mm or less, preferably 75 mm or less, and more preferably 70 mm or less.
- the rigidity of the second dough is preferably 30 mm or more, more preferably 40 mm or more, and further preferably 50 mm or more.
- the rigidity and softness are equal to or less than the above-mentioned upper limit value, the protective clothing makes it easier for the protective clothing to follow the body when working while wearing the protective clothing, and the wearer can move easily and the workability is improved. ..
- the rigidity and softness are equal to or higher than the above-mentioned lower limit value, the second fabric clings to the human body when the wearer sweats while working, and the wearer's workability. It is easy to suppress the decrease.
- the second fabric has a laminated structure of a second spunbonded non-woven fabric and a second melt-blown non-woven fabric.
- the bulk density of the second melt-blown nonwoven second meltblown nonwoven fabric, protective garment, in order to exhibit more excellent dustproof property is preferably 0.20 g / cm 3 or more, 0.23 g / cm 3 The above is more preferable, and 0.26 g / cm 3 or more is further preferable.
- the bulk density of the second melt-blown non-woven fabric is preferably 0.53 g / cm 3 or less, preferably 0.40 g / cm 3 or less, in order to reduce the value of the rigidity and softness of the second fabric. More preferably, it is 0.30 g / cm 3 or less.
- the thickness of the second melt blown nonwoven fabric is preferably 120 ⁇ m or less, more preferably 100 ⁇ m or less, and further preferably 90 ⁇ m or less. preferable.
- the thickness of the second melt-blown non-woven fabric is preferably 30 ⁇ m or more, more preferably 40 ⁇ m or more, and more preferably 50 ⁇ m or more. More preferred.
- the average fiber diameter of the fibers constituting the second melt-blown non-woven fabric is preferably 0.5 ⁇ m or more, more preferably 1 ⁇ m or more, and further preferably 2 ⁇ m or more.
- the average fiber diameter of the fibers constituting the second melt-blown non-woven fabric is preferably 8 ⁇ m or less, more preferably 4 ⁇ m or less, and further preferably 3 ⁇ m or less.
- the protective clothing can be made excellent in dust resistance in the portion using the second fabric, and can be made more excellent in flexibility in the portion using the second fabric.
- the material of the fibers constituting the second melt blown non-woven fabric is not particularly limited.
- the material of the fiber is polyolefin such as polyethylene and polypropylene, polyester such as polyethylene terephthalate and polylactic acid, polycarbonate, polystyrene, polyphenylene sulfide, fluororesin, and a mixture thereof.
- the fiber material contains a polyolefin resin as a main component from the viewpoint of improving the productivity of the fabric and the texture.
- the polyolefin-based resin is preferably polypropylene from the viewpoint that the rigidity and softness are easily improved.
- the second melt-blow non-woven fabric when the second melt-blow non-woven fabric contains a polyolefin-based resin as a main component, the second melt-blow non-woven fabric contains a polyolefin-based resin in an amount of 80% by mass or more with respect to the entire second melt-blow non-woven fabric. It means to contain.
- the second melt-blow non-woven fabric preferably contains a polyolefin-based resin in an amount of 90% by mass or more based on the total amount of the second melt-blow non-woven fabric, and more preferably only the polyolefin-based resin.
- the second melt-blow non-woven fabric can be obtained by the same method as the first melt-blow non-woven fabric.
- the bulk density of the second spunbonded non-woven fabric is preferably 0.10 g / cm 3 or more, preferably 0.11 g / cm / cm, in order for the protective clothing to exhibit more excellent dust resistance. More preferably cm 3 or more, and further preferably 0.12 g / cm 3 or more.
- the bulk density of the second spunbonded non-woven fabric is preferably 0.15 g / cm 3 or less, preferably 0.14 g / cm 3 or less, in order to reduce the value of the rigidity and softness of the second fabric. More preferably, it is more preferably 0.13 g / cm 3 or less.
- the thickness of the second spunbonded non-woven fabric is preferably 200 ⁇ m or less, more preferably 190 ⁇ m or less, and more preferably 180 ⁇ m or less in order to reduce the value of the rigidity and softness of the second fabric. More preferred.
- the thickness of the second melt-blown non-woven fabric is preferably 120 ⁇ m or more, more preferably 140 ⁇ m or more, and more preferably 150 ⁇ m or more in order to make the dustproof property of the protective clothing more excellent. More preferred.
- the material of the fiber constituting the second spunbonded non-woven fabric is not particularly limited.
- the material of the fiber is polyolefin such as polyethylene and polypropylene, polyester such as polyethylene terephthalate and polylactic acid, polycarbonate, polystyrene, polyphenylene sulfide, fluororesin, and a mixture thereof.
- the fiber material is preferably polyolefin from the viewpoint of improving the productivity of the fabric and the texture.
- the average fiber diameter of the fibers constituting the second spunbonded non-woven fabric is preferably 14 ⁇ m or more, more preferably 16 ⁇ m or more, and further preferably 18 ⁇ m or more.
- the average fiber diameter of the fibers is preferably 24 ⁇ m or less, more preferably 22 ⁇ m or less, and even more preferably 20 ⁇ m or less.
- the second spunbonded nonwoven fabric can increase the tensile and tear strength of the fabric. Therefore, a stronger protective suit can be obtained.
- the average fiber diameter is equal to or less than the above-mentioned upper limit value, the size of the opening of the second spunbonded nonwoven fabric becomes smaller. Therefore, the protective clothing has more excellent dust resistance of the second fabric and more flexibility in the portion where the second fabric is used.
- the second spunbonded non-woven fabric may be provided with a function as long as the effect of the present embodiment is not impaired.
- the second spunbonded non-woven fabric may be provided with functions such as water repellency, oil repellency, antistatic, flame retardant, antibacterial, and antifungal.
- the second spunbonded non-woven fabric and the second melt-blown non-woven fabric may be directly laminated or may be adhered by an adhesive (second adhesive).
- the content of the adhesive contained between the layers of the second spunbonded non-woven fabric and the second melt-blow non-woven fabric is more than 0 g / m 2 and preferably 0.4 g / m 2 or less.
- the content of the adhesive is not more than the above upper limit value, the second fabric has extremely low rigidity and softness, and is extremely excellent in flexibility.
- the content of the adhesive is more preferably 0.2 g / m 2 or less, and particularly preferably no adhesive is used.
- the second fabric is arranged in the portion A and the portion B of the protective clothing, and the second fabric is required to have high flexibility.
- the comfort of the protective garment is achieved by the first fabric placed in the portion C. Therefore, the second fabric is not required to have high breathability as compared with the first fabric.
- the first dough it is preferable to use a charged melt-blow non-woven fabric as the first melt-blow non-woven fabric in order to improve the breathability of the dough.
- the charged melt blown nonwoven fabric and the spunbonded nonwoven fabric need to be manufactured separately and independently, and the charged melt blown nonwoven fabric and the spunbonded nonwoven fabric need to be bonded to each other with an adhesive.
- the second fabric has high flexibility and high dust resistance, high breathability is not required. Therefore, the second fabric is not required to use a charged melt blown non-woven fabric.
- the second melt-blown nonwoven fabric may be directly formed on one surface of the second spunbonded nonwoven fabric. That is, in the process of manufacturing the second fabric, the adhesive (second adhesive) is optional when obtaining a laminate of the second spunbonded nonwoven fabric and the second melt-blown nonwoven fabric.
- the content of the adhesive contained between the layers of the second spunbonded nonwoven fabric and the second melt-blown nonwoven fabric of the second fabric can be set to 0 g / m 2, and the flexibility can be further enhanced. ..
- the second fabric manufacturing method does not use an adhesive (second adhesive) in order to obtain a laminate of the second spunbonded nonwoven fabric and the second melt-blown nonwoven fabric.
- second adhesive second adhesive
- the method of laminating the second spunbonded non-woven fabric and the second melt-blown non-woven fabric is not particularly limited as long as the effects of the present embodiment are not impaired.
- the second fabric may further include a fourth spunbonded non-woven fabric.
- the second fabric it is preferable that the second spunbonded non-woven fabric, the second melt-blown non-woven fabric and the fourth spunbonded non-woven fabric are laminated in this order.
- the fourth spunbonded non-woven fabric makes it possible to protect the second melt-blown non-woven fabric from external stress.
- the protective clothing is likely to suppress deterioration in performance such as dust resistance of the protective clothing due to scratches on the second melt blown non-woven fabric, and has excellent wear resistance.
- the fourth spunbonded non-woven fabric the same one as described above can be used as the second spunbonded non-woven fabric.
- the laminated structure of the second fabric includes (A) a laminated structure in which a second spunbonded non-woven fabric, a second melt-blown non-woven fabric and a fourth spunbonded non-woven fabric are laminated in this order, and (B) a second spunbond.
- the second fabric has (D) a second spunbonded non-woven fabric, a second spunbonded non-woven fabric, and a second fabric from the viewpoint of achieving both excellent dust resistance and excellent rigidity and softness.
- the melt-blow non-woven fabric, the second melt-blow non-woven fabric, the second melt-blow non-woven fabric and the fourth spunbond non-woven fabric are preferably laminated in this order.
- the QF value of the second dough is preferably 0.20 or less, more preferably 0.10 or less, and even more preferably 0.05 or less.
- the QF value of the second dough is preferably 0.01 or more, more preferably 0.02 or more, and further preferably 0.03 or more.
- the QF value is obtained from the collection efficiency and the pressure loss.
- the QF value can be calculated by the formula of ⁇ Ln (T) / ⁇ P.
- T is the collection efficiency
- ⁇ P is the static pressure difference between the upstream and downstream of the sample when the collection efficiency T is measured.
- the protective clothing is flexible when worn, is easy for the wearer to work on, and has excellent dust resistance from dust and chemical substances.
- the embodiment of the present invention has been described above.
- the present invention is not particularly limited to the above embodiments.
- the above-described embodiment mainly describes an invention having the following configuration.
- a protective suit including a pair of sleeve portions and a body portion, and one sleeve portion of the pair of sleeve portions covers the elbow joint of the wearer's right arm when the protective clothing is worn.
- the other sleeve portion includes a portion B that covers the elbow joint of the wearer's left arm when the protective suit is worn, and the body portion is a portion C that covers the wearer's large chest muscle when the protective suit is worn.
- the protective clothing has a first fabric having a breathability of 30 cm 3 / cm 2 / sec or more and a second fabric having a rigidity of 80 mm or less, and the first fabric has the above-mentioned first fabric.
- the bulk density of the first meltblown nonwoven fabric 0.05 g / cm 3 or more 0.18 g / cm 3 or less, the thickness of the first meltblown nonwoven is at 70 ⁇ m or 200 ⁇ m or less, wherein
- the first melt-blow non-woven fabric is a charged melt-blow non-woven fabric, and the first spunbond non-woven fabric and the first melt-blow non-woven fabric are bonded by a first adhesive, and the content of the first adhesive is Is 0.5 g / m 2 or more and 5.0 g / m 2 or less, and the bulk density of the second melt-blown non-woven fabric is 0.20 g / cm 3 or more and 0.53 g / cm 3 or less, and the second The thickness of the melt-blown nonwoven fabric is 30 ⁇ m or more and 120 ⁇ m or less, and the bulk density of the second spunbonded nonwoven fabric is 0.10 g / cm 3 or more and 0.15 g / cm 3 or less, and the second spunbonded fabric is The thickness of the
- the QF value of the first dough is 0.30 or more, and the QF value of the second dough is 0.20 or less, according to any one of (1) to (3).
- Protective clothing is 0.30 or more, and the QF value of the second dough is 0.20 or less, according to any one of (1) to (3).
- the total area of the first fabric is 15% or more and 70% or less of the total area of the protective clothing
- the total area of the second fabric is the total area of the protective clothing.
- the protective clothing according to any one of (1) to (4), which is 30% or more and 85% or less.
- the body portion further includes a portion D that covers the wearer's subscapularis muscle when the protective clothing is worn, and the first fabric is arranged in the portion D, (1) to (1).
- Protective clothing according to any of 7).
- the undergarment includes a portion E that covers the knee joint of the wearer's right foot when the protective clothing is worn, and a portion F that covers the knee joint of the wearer's left foot when the protective clothing is worn.
- one sleeve portion has a first sewn portion in which the first fabric and the second fabric are sewn, and the other sleeve portion has the first sewn portion. It has a second sewn portion in which the fabric of 1 and the second fabric are sewn, and the first sewn portion includes the elbow joint of the wearer's right arm and the base portion of the right arm when the protective clothing is worn.
- the second sewn portion is formed between the elbow joint of the wearer's left arm and the base portion of the left arm when the protective clothing is worn, according to (1) to (10).
- the body portion has a portion G that covers the wearer's waist when wearing the protective clothing, and a third sewn portion in which the first fabric and the second fabric are sewn.
- the second fabric is arranged in the portion G, the portion G has a gathered portion for tightening the waist circumference of the wearer, and the third sewn portion has a gathered portion rather than the gathered portion.
- the protective clothing according to any one of (1) to (11) provided on the head side of the wearer.
- FIG. 1 is a conceptual diagram of an SEM image field of view of a cross section of the fabric. A method of measuring the thickness of each layer constituting the dough will be described with reference to FIG. The conceptual view of the SEM image field of view of FIG.
- FIG. 1 shows a cut surface and a background 3 of a fabric composed of a spunbonded nonwoven fabric layer and a melt-blown nonwoven fabric layer.
- Five dividing lines 4 that are perpendicular to the longitudinal direction of the SEM image and that evenly divide the width of the SEM image in the longitudinal direction into six are written on the SEM image.
- the length of each dividing line overlapping the spunbonded non-woven fabric layer (an example of the dividing line overlapping the spunbonded non-woven fabric layer is indicated by reference numeral 5 in FIG. 1) was measured.
- the length of each dividing line overlapping the melt-blown non-woven fabric layer was also measured.
- the length of the dividing line was read up to the first decimal place when the unit of the length of the dividing line was ⁇ m, and the first decimal place was rounded off.
- the above measurement was performed on 10 SEM images obtained by photographing different parts of the cross section of the fabric, and the average value of 50 measured values of the length of the dividing line overlapping the obtained spunbonded non-woven fabric layer was taken as the spunbonded non-woven fabric. The thickness of the layer was used. Further, the average value of 50 measured values of the lengths of the dividing lines overlapping the obtained melt-blow non-woven fabric layer was taken as the thickness of the melt-blow non-woven fabric layer.
- a cavity-visible portion 7 that is, a portion where fibers are not shown
- the portion visible as the cavity and the dividing line overlap.
- 15 fibers constituting the spunbonded non-woven fabric layer were randomly selected from the spunbonded non-woven 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 spunbonded nonwoven fabric layer.
- 15 fibers constituting the melt-blow non-woven fabric layer were randomly selected from the melt-blow non-woven 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 blow nonwoven fabric layer.
- the fiber diameter of the fiber was read up to the first decimal place when the fiber diameter was in ⁇ m, and the value was rounded off to the first decimal place.
- the average fiber diameter of the fibers constituting the spunbonded nonwoven fabric layer is the same as the method for measuring the average fiber diameter of the fibers constituting the spunbonded nonwoven fabric layer. It was measured by the same measuring method.
- the bulk density was measured by "GeoPyc1360" manufactured by Micromeritix Japan GK. Layers other than the specific layer whose bulk density was to be measured (ie, the spunbonded non-woven fabric layer or the melt-blown non-woven fabric layer) were removed from the protective clothing fabric using # 1000 sandpaper. Next, a specific layer to be measured was cut out to a size of 2 mm ⁇ 2 mm and used as a measurement sample. Ten measurement samples were prepared, and the measurement beads were alternately laminated in a sample chamber having an inner diameter of 12.7 mm, and the beads were filled to a position 2 cm from the bottom surface of the sample chamber for measurement.
- the third decimal place of the bulk density result obtained from the measurement was rounded off to obtain the bulk density of the measurement sample. Then, the bulk density of the above-mentioned measurement sample was measured three times. The average value of the obtained three values was taken as the bulk density of the specific layer. The bulk density was measured for each of the spunbonded non-woven fabric layer and the melt-blown non-woven fabric layer.
- Air permeability The air permeability of the fabric was measured based on the JIS L1913-2010 Frazier method, and the amount of air passing through a test piece having a size of 15 cm ⁇ 15 cm was used. The average value of the obtained three measurements of the amount of passing air was taken as the air permeability.
- Collection efficiency was measured for the fabric with a collection performance measuring device.
- a dust storage box is connected to the upstream side of a sample holder for setting a measurement sample, and a flow meter, a flow rate adjusting valve, and a blower are connected to the downstream side.
- a particle counter can be used for the sample holder, and the number of dusts on the upstream side and the number of dusts on the downstream side of the measurement sample can be measured via the switching cock.
- the sample holder is equipped with a pressure gauge and can read the static pressure difference ⁇ P upstream and downstream of the sample.
- a sample was filled with a polystyrene standard latex powder with a diameter of 0.3 ⁇ m (a 0.309U polystyrene 10% by mass solution manufactured by Nacalai Tesque Co., Ltd. diluted 200 times with distilled water) in a dust storage box. Is set in the holder, the air volume is adjusted with the flow rate adjustment valve so that the filter passing speed is 1 m / min, and the dust concentration is 10,000 to 40,000 particles / 2.83 x 10 -4 m 3 (0.01 ft 3). ), And 30 seconds after stabilization, the number of dust D upstream and the number d downstream of the sample were measured three times per sample with a particle counter (KC-01E, manufactured by Rion).
- QF value -Ln (T) / ⁇ P
- Adhesive content Five test pieces of 100 mm square dough were prepared, and they were allowed to stand for 24 hours in an atmosphere of a temperature of 20 ° C. and a humidity of 65% RH, and then each of the five test pieces was allowed to stand. The initial mass (g) of was measured. Next, 5 test pieces were impregnated with 200 ml of a solvent (xylene) set at a temperature of 50 ° C. filled in a container having a capacity of 300 ml for 6 hours. Then, again, the five test pieces were immersed in 200 ml of solvent (xylene) set at a temperature of 50 ° C. for 6 hours, which was filled in a container having a capacity of 300 ml.
- a solvent xylene
- Comfort test method After the monitor wore protective clothing (medium size), the monitor evaluated the temperature and humidity and comfort (steamy heat) in the clothes after going up and down the platform. The above comfort test was carried out by three monitors for the same protective clothing, and the most test result among the evaluations of the three monitors was adopted as the final test result. The three monitors who participated in the comfort test were male and 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 to the back of the neck, wear protective clothing, and wear sneakers.
- Tempoture / humidity sensor SHA-3151 manufactured by T & D, Data logger: Ondotori TR-72wf manufactured by T & D
- S3 Sit for 30 minutes in a room with a 50% RH atmosphere at 20 ° C and stand still.
- S4 Move to a room at 30 ° C. and 50% RH atmosphere, and raise and lower the platform for 20 minutes in the same atmosphere.
- Step up / down interval 15 steps / 10 seconds, step height 20 cm
- S5 The temperature and humidity inside the clothes after 20 minutes are measured to evaluate the comfort.
- ⁇ Evaluation criteria> Each monitor evaluated comfort according to the following criteria: A: There was no stuffiness and the comfort was very good. B: There was little stuffiness and the comfort was excellent. C: There was a lot of stuffiness and the comfort was inferior.
- M2 (7) Rigidity and softness sample cut, workability (ease of evaluation) during evaluation is evaluated. ⁇ Evaluation criteria> Each monitor was evaluated for workability according to the following criteria. A: It was easy to walk, easy to evaluate, and very excellent in workability. B: It was a little easier to walk, a little easier to evaluate, and had excellent comfort. C: It was difficult to walk, difficult to evaluate, and inferior in comfort.
- Example 1 Two polypropylene spunbonded non-woven fabrics (grain 20 g / m 2 ) and one charged polypropylene melt blown non-woven fabric (grain 15 g / m 2 , bulk density 0.14 g / cm 3 , thickness) 109 ⁇ m, fiber diameter 6 ⁇ m) was prepared.
- a first fabric was prepared in which spunbonded non-woven fabric, melt-blown non-woven fabric, and spunbonded non-woven fabric were laminated in this order, and the respective layers were bonded to each other.
- the bonding between the layers of the first dough was carried out by arranging a hot melt adhesive containing polyethylene as a main component between the layers using a spray.
- the content of the hot melt adhesive in each layer of the first dough was 2.0 g / m 2 per layer.
- the characteristics of the first dough are as shown in Table 1.
- the structure of the melt-blown nonwoven fabric included in the first fabric is as shown in Table 2.
- the composition of the two spunbonded non-woven fabrics included in the first fabric is as shown in Table 3.
- a polypropylene melt-blown non-woven fabric (grain 10 g / m 2 ) was directly formed on one surface of a polypropylene spunbonded non-woven fabric (grain 20 g / m 2 ) to obtain a laminate.
- a polypropylene spunbonded non-woven fabric (with a grain of 20 g / m 2 ) was directly formed on the surface of the laminate on the side of the polypropylene melt-blown non-woven fabric to obtain a second fabric.
- the content of the hot melt adhesive in each layer of the second dough was 0 g / m 2 per layer.
- the characteristics of the second dough are as shown in Table 4.
- the structure of the melt-blown nonwoven fabric included in the second fabric is as shown in Table 5.
- the composition of the two spunbonded non-woven fabrics included in the second fabric is as shown in Table 6.
- Example 1 After that, a plurality of parts corresponding to a plurality of areas constituting the protective clothing were cut out from the obtained first cloth and the obtained second cloth. These parts were then sewn together with a sewing machine to form a tethered protective suit with a hood. The obtained protective clothing was used as the protective clothing of Example 1.
- FIGS. 2 and 3 The conceptual diagrams of the obtained protective clothing are shown in FIGS. 2 and 3. That is, FIG. 2 is a conceptual diagram of the front surface of the protective clothing 17 of the first embodiment, which is an embodiment of the protective clothing of the present invention, and FIG. 3 is a protection of the first embodiment, which is an embodiment of the protective clothing of the present invention. It is a conceptual diagram of the back surface of clothes 17.
- the protective clothing 17 includes a pair of sleeves, a body, an undergarment, and a hood 15.
- the front body portion front body portion includes a portion C that covers the pectoralis major muscle of the wearer and a portion D that covers the subscapularis muscle of the wearer.
- one of the pair of sleeve portions includes a portion A that covers the elbow joint of the wearer's right arm. Further, one of the pair of sleeve portions includes a portion B that covers the elbow joint of the wearer's left arm.
- the above-mentioned part A is indicated by reference numeral 10, and the above-mentioned part B is indicated by reference numeral 11.
- the lower garment includes a portion E covering the knee joint of the wearer's right foot and a portion F covering the knee joint of the wearer's left foot.
- the above-mentioned part E is indicated by reference numeral 13, and the above-mentioned part F is indicated by reference numeral 14.
- the hood, the portion C and the portion D are composed of the first dough
- the portion A, the portion B, the portion E and the portion F are composed of the second dough.
- the hood part and the other parts of the protective clothing except the parts A to F are made of the second cloth. That is, the part of the protective clothing corresponding to the area indicated by the white in the figure is composed of the first fabric, and the part of the protective clothing corresponding to the area indicated by the dots in the figure is the second. It is made up of fabric.
- one sleeve portion has a first sewn portion in which the first fabric and the second fabric are sewn, and the other sleeve portion is the first.
- the fabric and the second fabric are sewn together to have a second sewn portion.
- each of the left and right sleeve portions is formed with a sewn portion (first sewn portion S1 and second sewn portion S2) in which the portion C and the portion D are sewn. As shown in FIGS.
- the first sewn portion S1 is formed between the elbow joint of the wearer's right arm and the base portion of the right arm when the protective clothing 17 is worn, and the second sewn portion S1 is formed.
- the sewn portion S2 is formed between the elbow joint of the wearer's left arm and the base portion of the left arm when the protective clothing 17 is worn.
- the total area of the first fabric was 38% of the total area of the protective clothing, and the total area of the second fabric was 62% of the total area of the protective clothing.
- Example 2 The charged polypropylene melt-blown non-woven fabric of the first fabric of the protective clothing of Example 1 is replaced with the charged polypropylene melt-blown non-woven fabric (grain 15 g / m 2 , bulk density 0.15 g).
- the first dough was prepared in the same manner as in Example 1 except that it was set to / cm 3 , thickness 100 ⁇ m, and fiber diameter 4 ⁇ m).
- the characteristics of the first dough are as shown in Table 1.
- the composition of the melt-blown nonwoven fabric included in the first fabric is as shown in Table 2.
- the composition of the two spunbonded non-woven fabrics included in the first fabric is as shown in Table 3.
- Example 3 The charged polypropylene melt-blown non-woven fabric provided in the first fabric of the protective clothing of Example 1 is replaced with the charged polypropylene melt-blown non-woven fabric (grain 15 g / m 2 , bulk density 0.16 g). / cm 3, a thickness of 96 .mu.m, except that the fiber diameter 3 [mu] m), in the same manner as in example 1, was prepared first fabric.
- the characteristics of the first dough are as shown in Table 1.
- the composition of the melt-blown nonwoven fabric included in the first fabric is as shown in Table 2.
- the composition of the two spunbonded non-woven fabrics included in the first fabric is as shown in Table 3.
- Example 4 A fabric similar to the first fabric of the protective clothing of Example 1 was prepared as the first fabric. Next, the polypropylene spunbonded non-woven fabric provided in the second fabric of the protective clothing of Example 1 is replaced with a polypropylene spunbonded non-woven fabric (grain 20 g / m 2 , bulk density 0.14 g / cm 3 , thickness 141 ⁇ m). A second dough was prepared in the same manner as in Example 1 except that the fiber diameter was 18 ⁇ m).
- the characteristics of the second dough are as shown in Table 4.
- the structure of the melt-blown nonwoven fabric included in the second fabric is as shown in Table 5.
- the structure of the spunbonded non-woven fabric included in the second fabric is as shown in Table 6.
- Example 5 A fabric similar to the first fabric of the protective clothing of Example 1 was prepared as the first fabric. Next, the polypropylene spunbonded non-woven fabric provided in the second fabric of the protective clothing of Example 1 is used as a polypropylene spunbonded non-woven fabric (grain 20 g / m 2 , bulk density 0.13 g / cm 3 , thickness 149 ⁇ m). A second dough was prepared in the same manner as in Example 1 except that the fiber diameter was 19 ⁇ m).
- the characteristics of the second dough are as shown in Table 4.
- the structure of the melt-blown nonwoven fabric included in the second fabric is as shown in Table 5.
- the structure of the spunbonded non-woven fabric included in the second fabric is as shown in Table 6.
- Example 6 A fabric similar to the first fabric of the protective clothing of Example 1 was prepared as the first fabric. Next, the polypropylene spunbonded non-woven fabric provided in the second fabric of the protective clothing of Example 1 is replaced with a polypropylene spunbonded non-woven fabric (grain 20 g / m 2 , bulk density 0.11 g / cm 3 , thickness 190 ⁇ m). A second dough was prepared in the same manner as in Example 1 except that the fiber diameter was 22 ⁇ m).
- the characteristics of the second dough are as shown in Table 4.
- the structure of the melt-blown nonwoven fabric included in the second fabric is as shown in Table 5.
- the structure of the spunbonded non-woven fabric included in the second fabric is as shown in Table 6.
- Example 7 A fabric similar to the first fabric of the protective clothing of Example 1 was prepared as the first fabric. Next, a fabric similar to the second fabric of the protective clothing of Example 1 was prepared as the second fabric.
- FIGS. 4 and 5 The conceptual diagrams of the obtained protective clothing are shown in FIGS. 4 and 5. That is, FIG. 4 is a conceptual diagram of the front surface of the protective clothing 18 of the seventh embodiment, which is an embodiment of the protective clothing of the present invention, and FIG. 5 is a protection of the seventh embodiment, which is an embodiment of the protective clothing of the present invention. It is a conceptual diagram of the back surface of the clothes 18.
- the protective garment 18 includes a pair of sleeves, a body, an undergarment and a hood 15.
- the front body portion includes a portion C that covers the pectoralis major muscle of the wearer and a portion D that covers the subscapularis muscle of the wearer.
- one of the pair of sleeve portions includes a portion A that covers the elbow joint of the wearer's right arm. Further, one of the pair of sleeve portions includes a portion B that covers the elbow joint of the wearer's left arm.
- the above-mentioned part A is indicated by reference numeral 10, and the above-mentioned part B is indicated by reference numeral 11.
- the lower garment includes a portion E covering the knee joint of the wearer's right foot and a portion F covering the knee joint of the wearer's left foot.
- the above-mentioned part E is indicated by reference numeral 13, and the above-mentioned part F is indicated by reference numeral 14.
- the hood, the portion C, the portion D, the portion E and the portion F are composed of the first dough
- the portion A and the portion B are composed of the second dough
- the hood part and the other parts of the protective clothing except the parts A to F are made of the second cloth. That is, the part of the protective clothing corresponding to the area indicated by the white in the figure is composed of the first fabric, and the part of the protective clothing corresponding to the area indicated by the dots in the figure is the second. It is made up of fabric.
- the total area of the first fabric was 64% of the total area of the protective clothing, and the total area of the second fabric was 36% of the total area of the protective clothing.
- Example 8 A fabric similar to the first fabric of the protective clothing of Example 1 was prepared as the first fabric. Next, a fabric similar to the second fabric of the protective clothing of Example 1 was prepared as the second fabric.
- FIGS. 6 and 7 The conceptual diagrams of the obtained protective clothing are shown in FIGS. 6 and 7. That is, FIG. 6 is a conceptual diagram of the front surface of the protective clothing 19 of Example 8 which is an embodiment of the protective clothing of the present invention, and FIG. 7 is the protection of Example 8 which is an embodiment of the protective clothing of the present invention. It is a conceptual diagram of the back surface of the clothes 19.
- the protective clothing 19 includes a pair of sleeves, a body, an undergarment, and a hood 15.
- the front body portion includes a portion C that covers the pectoralis major muscle of the wearer and a portion D that covers the subscapularis muscle of the wearer.
- one of the pair of sleeve portions includes a portion A that covers the elbow joint of the wearer's right arm. Further, one of the pair of sleeve portions includes a portion B that covers the elbow joint of the wearer's left arm.
- the above-mentioned part A is indicated by reference numeral 10, and the above-mentioned part B is indicated by reference numeral 11.
- the lower garment includes a portion E covering the knee joint of the wearer's right foot and a portion F covering the knee joint of the wearer's left foot.
- the above-mentioned part E is indicated by reference numeral 13, and the above-mentioned part F is indicated by reference numeral 14.
- the portion C is composed of the first dough
- the hood, the portion A, the portion B, the portion D, the portion E and the portion F are composed of the second dough.
- the hood part and the other parts of the protective clothing except the parts A to F are made of the second cloth. That is, the part of the protective clothing corresponding to the area indicated by the white in the figure is composed of the first fabric, and the part of the protective clothing corresponding to the area indicated by the dots in the figure is the second It is made up of fabric.
- the total area of the first fabric was 23% of the total area of the protective clothing, and the total area of the second fabric was 77% of the total area of the protective clothing.
- Example 9 A fabric similar to the first fabric of the protective clothing of Example 1 was prepared as the first fabric. Next, the polypropylene spunbonded non-woven fabric provided in the second fabric of the protective clothing of Example 1 is used as a polypropylene spunbonded non-woven fabric (grain 20 g / m 2 , bulk density 0.18 g / cm 3 , thickness 113 ⁇ m). A second dough was prepared in the same manner as in Example 1 except that the fiber diameter was 14 ⁇ m).
- the characteristics of the second dough are as shown in Table 4.
- the structure of the melt-blown nonwoven fabric included in the second fabric is as shown in Table 5.
- the structure of the spunbonded non-woven fabric included in the second fabric is as shown in Table 6.
- Example 1 The charged polypropylene melt-blown non-woven fabric of the first fabric of the protective clothing of Example 1 is replaced with the charged polypropylene melt-blown non-woven fabric (grain 15 g / m 2 , bulk density 0.18 g).
- the first dough was prepared in the same manner as in Example 1 except that it was set to / cm 3 , thickness 85 ⁇ m, and fiber diameter 3 ⁇ m).
- the characteristics of the first dough are as shown in Table 1.
- the composition of the melt-blown nonwoven fabric included in the first fabric is as shown in Table 2.
- the composition of the two spunbonded non-woven fabrics included in the first fabric is as shown in Table 3.
- a fabric similar to the second fabric of the protective clothing of Example 1 was prepared as the second fabric. Then, a plurality of parts corresponding to the plurality of regions constituting the protective clothing were cut out from the obtained first fabric and the obtained second fabric. Next, these plurality of parts were sewn with a sewing machine in order to obtain a protective clothing having a configuration similar to that of the protective clothing of Example 1. The obtained protective clothing was used as the protective clothing of Comparative Example 1.
- Example 2 A fabric similar to the first fabric of the protective clothing of Example 1 was prepared as the first fabric. Next, the polypropylene spunbonded non-woven fabric provided in the second fabric of the protective clothing of Example 1 is replaced with a polypropylene spunbonded non-woven fabric (grain 20 g / m 2 , bulk density 0.09 g / cm 3 , thickness 227 ⁇ m). A second dough was prepared in the same manner as in Example 1 except that the fiber diameter was set to 25 ⁇ m).
- the characteristics of the second dough are as shown in Table 4.
- the structure of the melt-blown nonwoven fabric included in the second fabric is as shown in Table 5.
- the structure of the spunbonded non-woven fabric included in the second fabric is as shown in Table 6.
- Comparative Example 3 A fabric similar to the first fabric of the protective clothing of Example 1 was prepared as the first fabric. Then, a plurality of parts corresponding to the plurality of regions constituting the protective clothing were cut out from the obtained first fabric. These parts were then sewn together with a sewing machine to form a tethered protective suit with a hood. The obtained protective clothing was used as the protective clothing of Comparative Example 3.
- FIGS. 8 and 9 The conceptual diagrams of the obtained protective clothing are shown in FIGS. 8 and 9. That is, FIG. 8 is a conceptual diagram of the front surface of the protective clothing 20 of Comparative Example 3 which is an embodiment of the protective clothing of the present invention, and FIG. 9 is the protection of Comparative Example 3 which is an embodiment of the protective clothing of the present invention. It is a conceptual diagram of the back surface of the clothes 20.
- the protective clothing 20 includes a pair of sleeves, a body, an undergarment, and a hood 15.
- the front body portion includes a portion C that covers the pectoralis major muscle of the wearer and a portion D that covers the subscapularis muscle of the wearer.
- one of the pair of sleeve portions includes a portion A that covers the elbow joint of the wearer's right arm. Further, one of the pair of sleeve portions includes a portion B that covers the elbow joint of the wearer's left arm.
- the above-mentioned part A is indicated by reference numeral 10, and the above-mentioned part B is indicated by reference numeral 11.
- the lower garment includes a portion E covering the knee joint of the wearer's right foot and a portion F covering the knee joint of the wearer's left foot.
- the above-mentioned part E is indicated by reference numeral 13
- the above-mentioned part F is indicated by reference numeral 14.
- the hood, part A, part B, part C, part D, part E and part F are made of the first dough.
- the hood part and the other parts of the protective clothing except the parts A to F are made of the first cloth. That is, the protective clothing of Comparative Example 3 is composed of only the first fabric.
- the total area of the first fabric was 100% of the total area of the protective clothing.
- three monitors performed a comfort test and a workability test using the protective clothing of Comparative Example 3.
- the types of fabrics used for each part and the evaluation results are as shown in Table 9.
- Comparative Example 4 A fabric similar to the second fabric of the protective clothing of Example 1 was prepared as the second fabric. Then, a plurality of parts corresponding to the plurality of regions constituting the protective clothing were cut out from the obtained second fabric. These parts were then sewn together with a sewing machine to form a tethered protective suit with a hood. The obtained protective clothing was used as the protective clothing of Comparative Example 4.
- FIGS. 10 and 11 The conceptual diagrams of the obtained protective clothing are shown in FIGS. 10 and 11. That is, FIG. 10 is a conceptual diagram of the front surface of the protective clothing 21 of Comparative Example 4 which is an embodiment of the protective clothing of the present invention, and FIG. 11 is the protection of Comparative Example 4 which is an embodiment of the protective clothing of the present invention. It is a conceptual diagram of the back surface of the clothes 21.
- the protective clothing 21 includes a pair of sleeves, a body, an undergarment, and a hood 15.
- the front body portion includes a portion C that covers the pectoralis major muscle of the wearer and a portion D that covers the subscapularis muscle of the wearer.
- one of the pair of sleeve portions includes a portion A that covers the elbow joint of the wearer's right arm. Further, one of the pair of sleeve portions includes a portion B that covers the elbow joint of the wearer's left arm.
- the above-mentioned part A is indicated by reference numeral 10, and the above-mentioned part B is indicated by reference numeral 11.
- the lower garment includes a portion E covering the knee joint of the wearer's right foot and a portion F covering the knee joint of the wearer's left foot.
- the above-mentioned part E is indicated by reference numeral 13
- the above-mentioned part F is indicated by reference numeral 14.
- the hood, part A, part B, part C, part D, part E and part F are made of a second dough.
- the hood part and the other parts of the protective clothing except the parts A to F are made of the second cloth. That is, the protective clothing of Comparative Example 4 is composed of only the second fabric.
- the total area of the second fabric with respect to the total area of the protective clothing was 100%.
- Example 10 In the protective clothing of Example 4 (protective clothing 17, see FIGS. 2 to 3), the positions of the first sewn portion S1 and the second sewn portion S2 are positioned at the base of the wearer's right arm and the base of the left arm, respectively.
- the protective clothing 22 was produced by the same method as in Example 4 except that the portion was changed.
- the conceptual diagrams of the obtained protective clothing are shown in FIGS. 12 and 13.
- the total area of the first fabric was 33% of the total area of the protective clothing, and the total area of the second fabric was 67% of the total area of the protective clothing.
- the protective clothing 23 of the eleventh embodiment is the protective clothing of the fourth embodiment (protective clothing 17, see FIGS. 2 to 3), and further includes a portion G covering the wearer's waist when the protective clothing is worn on the body portion. , Has a sewn portion (third sewn portion S3) in which the first fabric and the second fabric are sewn.
- a conceptual diagram of the protective clothing 23 is shown in FIGS. 14 and 15. The above part G is indicated by reference numeral 24.
- the second dough is arranged in the portion G.
- a gather portion G1 for tightening the waist circumference of the wearer is formed in the portion G.
- the third sewing portion S3 is provided on the wearer's head side with respect to the gather portion G1.
- the total area of the first fabric was 38% of the total area of the protective clothing, and the total area of the second fabric was 62% of the total area of the protective clothing.
- Table 7 summarizes the protective clothing composed of the first fabric having different air permeability and the second fabric having a rigidity of 71 mm.
- the volume density of the melt-blown nonwoven fabric provided in the first fabric is 0.14 g / cm 3 or more, so that the air permeability of the first fabric is 32 cm 3 / cm 2 /. It took more than a second.
- the temperature inside the garment when worn was 33 ° C., and the relative humidity was 78% or less. Therefore, even in the wearer's comfort test, it was judged as A or B.
- the workability test of the wearer it was judged as B. From these facts, it can be said that the protective clothing of Examples 1 to 3 was able to achieve both comfort and workability at a higher level.
- the air permeability of the first fabric of the protective clothing was 22 cm 3 / cm 2 / sec, and the rigidity of the second fabric of the protective clothing was 71 mm.
- the bulk density of the melt-blown non-woven fabric included in the first fabric of the protective clothing of Comparative Example 1 was as high as 0.18 g / cm 3 . Therefore, the air permeability of the first fabric was low.
- the relative humidity inside the protective clothing when wearing the protective clothing of Comparative Example 1 using the above-mentioned first fabric and the above-mentioned second fabric is 83%, and the relative humidity outside the protective clothing. It was expensive compared to. Therefore, the protective clothing was judged as C even in the comfort test of the wearer, and the comfort was inferior.
- Table 8 summarizes the protective clothing composed of the first fabric having a breathability of 94 cm 3 / cm 2 / sec and the second fabric having different hardness and softness.
- the bulk density of the spunbonded nonwoven fabric provided in the second fabric is 0.14 g / cm 3 or less, and the fiber diameter is 22 ⁇ m or less, whereby the second fabric is used.
- the rigidity and softness of the material was 80 mm or less.
- the protective clothing using the first fabric and the second fabric the temperature inside the garment when worn was 33 ° C., and the relative humidity was 70%. Therefore, the protective clothing was judged as A in the wearer's comfort test. In addition, the protective clothing was judged as A or B in the workability test of the wearer. From these facts, it can be said that the protective clothing of Examples 1, 4 to 6 was able to achieve both comfort and workability at a higher level.
- Example 9 the air permeability of the first fabric of the protective clothing was 94 cm 3 / cm 2 / sec, and the rigidity of the second fabric of the protective clothing was 12 mm.
- the bulk density of the spunbonded nonwoven fabric provided in the second fabric of the protective clothing of Example 9 was 0.09 g / cm 3 , and the fiber diameter was 14 ⁇ m. Therefore, the rigidity of the second dough was low.
- the protective clothing was also judged as A in the workability test when the protective clothing of Example 9 using the first fabric and the second fabric was worn, and the workability was excellent. Further, the protective clothing of Example 9 was also judged as A in the result of the comfort evaluation, and was excellent in comfort.
- the air permeability of the first fabric of the protective clothing was 94 cm 3 / cm 2 / sec, and the rigidity of the second fabric of the protective clothing was 98 mm.
- the bulk density of the spunbonded non-woven fabric provided in the second fabric of the protective clothing of Comparative Example 2 was 0.16 g / cm 3 , and the fiber diameter was 25 ⁇ m, so that the rigidity of the second fabric was high. .. Therefore, the protective clothing of Comparative Example 2 using the first fabric and the second fabric was judged to be C in the workability test at the time of wearing, and the workability was inferior.
- Table 9 summarizes the arrangement of the first fabric with a breathability of 94 cm 3 / cm 2 / sec and the different arrangement of the second fabric with a rigidity of 71 mm.
- the first fabric was placed on the hood, a portion C covering the pectoralis major muscle of the wearer, a portion D covering the subscapularis muscle of the wearer.
- the part A covering the elbow joint of the wearer's right arm, the part B covering the elbow joint of the wearer's left arm, the part E covering the knee joint of the wearer's right foot, and the wearer's left foot are covered with the second fabric. It was placed in the portion F covering the knee joint.
- Example 7 the first fabric is applied to a portion C that covers the pectoralis major muscle of the wearer, a portion D that covers the subscapularis muscle of the wearer, a hood, and a portion E that covers the knee joint of the wearer's right foot. And, it was placed in the portion F covering the knee joint of the wearer's left foot. Further, the second fabric was arranged in the portion A covering the elbow joint of the wearer's right arm and the portion B covering the elbow joint of the wearer's left arm.
- Example 8 the first fabric was placed in the portion C covering the pectoralis major muscle of the wearer.
- the second fabric is worn by the part D that covers the lower shoulder muscles of the wearer, the hood, the part A that covers the elbow joint of the wearer's right arm, and the part B that covers the elbow joint of the wearer's left arm. It was arranged in a portion E covering the knee joint of the right foot of the person and a part F covering the knee joint of the left foot of the wearer.
- the positions of the first sewn portion S1 and the second sewn portion S2 are respectively located at the base of the wearer's right arm.
- the arrangement was the same as in Example 4 except that the portion and the base portion of the left arm were changed.
- a portion G covering the wearer's waist when wearing the protective clothing and a first portion G are further attached to the body portion. It has a sewn portion (third sewn portion S3) in which a fabric and a second fabric are sewn, and a gathered portion G1 for tightening the wearer's waist is formed in the portion G.
- the total area of the first fabric with respect to the total area of the protective clothing is 23 to 64%, and the total area of the second fabric with respect to the total area of the protective clothing. The area was 77-36%.
- the temperature inside the garment when wearing the protective garment became 33 ° C, and the relative humidity became 78% or less. Therefore, these protective suits were judged as A or B in the wearer's comfort test. In addition, the protective clothing was judged as B in the wearer's workability test. From these facts, it can be said that the protective clothing of Examples 4, 7, 8, 10 and 11 was able to achieve both comfort and workability at a higher level.
- the protective clothing 17 of Example 4 see FIGS. 2 and 3
- the first sewn portion S1 and the second sewn portion S2 are formed between the elbow joint and the base portion of each arm. ing.
- the first fabric is arranged on the side portion of the wearer.
- breathability is likely to be improved in areas where sweat is likely to occur, such as armpits and peripheries. Therefore, the wearer wearing the protective clothing 17 of Example 4 was particularly comfortable.
- the first sewn portion S1 and the second sewn portion S2 are formed at the bases of the respective arms. Therefore, the second fabric is arranged on the side portion of the wearer.
- the breathability in sweat-prone areas such as the armpits and the perimeter of the armpits was somewhat inferior to that of the protective clothing 17 of Example 4.
- this protective clothing 22 is more easy to move the arm and shoulder at the base portion and shoulder portion of the arm than the protective clothing 17 of Example 4, and is excellent in workability.
- the third sewing portion S3 is provided on the head side of the wearer with respect to the gather portion G1. Therefore, it was possible to increase or decrease the volume between the protective clothing 23 and the wearer's body in the garment with the wearer's movement (for example, the movement of raising and lowering the platform in the workability evaluation).
- the air inside the garment of the protective clothing 23 is discharged to the outside of the garment from the portion C made of the first fabric on the head side of the third sewn portion S3 starting from the gathered portion G1 and from the portion C.
- the air outside the clothes was taken in. Therefore, the protective clothing 23 was able to replace the air inside and outside the protective clothing 23. This allowed the wearer to feel even more comfortable.
- Comparative Example 3 it was a protective suit made of only the first fabric. Therefore, in the workability test at the time of wearing, the protective clothing was judged as C and was inferior in workability. Further, in Comparative Example 4, the protective clothing was made of only the second fabric. As a result, the protective garment made of only the second fabric had a temperature of 34 ° C. and a relative humidity of 83% inside the garment when worn. Therefore, the protective clothing was judged as C in the wearer's comfort test, and was inferior in comfort.
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Abstract
Description
本実施形態の防護服が有する第1の生地は、通気度が30cm3/cm2/秒以上であればよく、60cm3/cm2/秒以上であることが好ましく、80cm3/cm2/秒以上であることがより好ましい。一方、第1の生地の通気度は、150cm3/cm2/秒以下であることが好ましく、130cm3/cm2/秒以下であることがより好ましく、110cm3/cm2/秒以下であることがさらに好ましい。通気度が上述した下限値以上であることにより、防護服は、防護服を着用した作業の際における衣内の環境を、衣外の環境により近づけることができる。その結果、防護服は、快適性が優れる。また、通気度を上述した上限値以下であることにより、防護服は、粉塵や化学物質に対する防塵性をより向上させやすい。
防護服の防塵性と快適性の両方を優れたものとするためには、第1のメルトブロー不織布の嵩密度は、0.05g/cm3以上であることが好ましく、0.08g/cm3以上であることがより好ましく、0.10g/cm3以上であることがさらに好ましい。一方、防護服の防塵性と快適性の両方を優れたものとするためには、第1のメルトブロー不織布の嵩密度は、0.18g/cm3以下であることが好ましく、0.16g/cm3以下であることがより好ましく、0.15g/cm3以下であることがさらに好ましい。
第1のスパンボンド不織布を構成する繊維の素材は、特に限定されない。一例を挙げると、繊維の素材は、ポリエチレン、ポリプロピレン等のポリオレフィン、ポリエチレンテレフタレート、ポリ乳酸等のポリエステル、ポリカーボネート、ポリスチレン、ポリフェニレンサルファイト、フッ素系樹脂、およびこれらの混合物等である。これらの中でも、繊維の素材は、生地の生産性や、風合いが優れたものとなる観点から、ポリオレフィンであることが好ましい。
本実施形態の防護服が有する第2の生地は、剛軟度が80mm以下であればよく、75mm以下であることが好ましく、70mm以下であることがより好ましい。一方、第2の生地の剛軟度は、30mm以上であることが好ましく、40mm以上であることがより好ましく、50mm以上であることがさらに好ましい。剛軟度が上述した上限値以下であることにより、防護服は、防護服を着用した作業の際に、防護服が身体に追従し易くなり、着用者が動きやすく、作業性が良好となる。また、剛軟度が上述した下限値以上であることにより、防護服は、着用者が作業を行うなかで汗をかいた際に、第2の生地が人体に纏わりつき、着用者の作業性が低下することを抑制しやすい。
第2のメルトブロー不織布の嵩密度は、防護服が、より優れた防塵性を発揮するために、0.20g/cm3以上であることが好ましく、0.23g/cm3以上であることがより好ましく、0.26g/cm3以上であることがさらに好ましい。一方、第2のメルトブロー不織布の嵩密度は、第2の生地の剛軟度の値を小さくするために、0.53g/cm3以下であることが好ましく、0.40g/cm3以下であることがより好ましく、0.30g/cm3以下であることがさらに好ましい。
第2のスパンボンド不織布の嵩密度は、防護服が、より優れた防塵性を発揮するために、0.10g/cm3以上であることが好ましく、0.11g/cm3以上であることがより好ましく、0.12g/cm3以上であることがさらに好ましい。一方、第2のスパンボンド不織布の嵩密度は、第2の生地の剛軟度の値を小さくするために、0.15g/cm3以下であることが好ましく、0.14g/cm3以下であることがより好ましく、0.13g/cm3以下であることがさらに好ましい。
(1)厚み
生地を、ミクロトームを用いて、生地の面と垂直な面で切断した。生地の切断面を、(株)日立製作所製電界放射型走査電子顕微鏡(FE-SEM)S-800を用いて、150倍で撮影した。この時、撮影により得られる画像の長手方向が、画像に写る生地の厚み方向と略垂直となるようにした。図1は、生地の断面のSEM画像視野の概念図である。図1を参照し、生地を構成する各層の厚みの測定方法を説明する。図1のSEM画像視野の概念図には、スパンボンド不織布層とメルトブロー不織布層とから構成される生地の切断面および背景3が写っている。まず、SEM画像の長手方向に垂直であって、かつ、SEM画像の長手方向の幅を均等に6分割する分割線4を5本、SEM画像に書き込んだ。スパンボンド不織布層と重なっている各分割線(スパンボンド不織布層と重なっている分割線の一例が、図1では符号5で示されている)の長さを測定した。また、メルトブロー不織布層と重なっている各分割線(メルトブロー不織布層と重なっている分割線の一例が、図1では符号6で示されている)の長さも測定した。このとき、上記の分割線の長さは、分割線の長さの単位をμmとした際の小数点第一位まで読み込み、小数点第一位を四捨五入した値とした。上記の測定を、生地の断面の異なる部位を撮影した10個のSEM画像について行い、得られたスパンボンド不織布層と重なっている分割線の長さの測定値50個の平均値をスパンボンド不織布層の厚みとした。また、得られたメルトブロー不織布層と重なっている分割線の長さの測定値50個の平均値をメルトブロー不織布層の厚みとした。ここで、SEM画像のスパンボンド不織布層とメルトブロー不織布層との境界に空洞に見える部位7(すなわち、繊維が写っていない部位)が観察され、この空洞に見える部位と分割線とが重なる場合には、この空洞に見える部位はメルトブロー不織布層の一部として、メルトブロー不織布層と重なっている分割線の長さおよびスパンボンド不織布層と重なっている分割線の長さを測定した。すなわち、図1に示された一例では、符号9で示されるものがメルトブロー不織布層と重なっている分割線4の長さであり、符号8で示されるものがスパンボンド不織布層と重なっている分割線4の長さである。なお、生地が、さらに、スパンボンド不織布層を備える場合には、そのスパンボンド不織布層の厚みは、上記のスパンボンド不織布層の厚みの測定方法と同様の測定方法にて測定した。
生地について、(1)厚みに関して上記した手法と同様にして得られた生地の切断面を、(株)日立製作所製電界放射型走査電子顕微鏡(FE-SEM)S-800を用いて、300倍と2000倍との倍率で撮影した。それらの画像を本装置に付属する画像解析ソフトに取り込んだ。その際、繊維径が10μm以上の繊維については300倍の倍率で測定したSEM画像を用いて、その繊維径を測定し、繊維径が10μm未満の繊維については2000倍の倍率で測定したSEM画像を用いて、その繊維径を測定した。具体的には、SEM画像に写ったスパンボンド不織布層から、このスパンボンド不織布層を構成する繊維を無作為に15本選定し、これらの繊維の繊維径を測定した。そして、得られた15個の測定値の平均をスパンボンド不織布層を構成する繊維の平均繊維径とした。また、SEM画像に写ったメルトブロー不織布層から、このメルトブロー不織布層を構成する繊維を無作為に15本選定し、これらの繊維の繊維径を測定した。そして、得られた15個の測定値の平均をメルトブロー不織布層を構成する繊維の平均繊維径とした。なお、繊維の繊維径は、繊維径をμmを単位とした際の小数点第一位まで読み込み、小数点第一位を四捨五入した値とした。なお、生地が、さらに、スパンボンド不織布層を備える場合には、そのスパンボンド不織布層を構成する繊維の平均繊維径は、上記のスパンボンド不織布層を構成する繊維の平均繊維径の測定方法と同様の測定方法にて測定した。
嵩密度の測定はマイクロメリティックスジャパン合同会社製“GeoPyc1360”によって行った。嵩密度の測定対象である特定の層(すなわち、スパンボンド不織布層またはメルトブロー不織布層)以外の層を、1000番のサンドペーパーを用いて防護服用生地から取り除いた。次に、測定対象である特定の層を2mm×2mmのサイズに切り出し、測定用サンプルとした。この測定用サンプルを10枚準備し、内径12.7mmのサンプルチャンバーに測定用ビーズと交互に積層し、ビーズをサンプルチャンバーの底面から2cmの位置まで充填し、測定した。測定から得られた嵩密度の結果の小数点第三位を四捨五入し、測定用サンプルの嵩密度とした。そして、上記の測定用サンプルの嵩密度の測定を3回行い。得られた3つの値の平均値を特定の層の嵩密度とした。なお、嵩密度の測定は、スパンボンド不織布層、メルトブロー不織布層それぞれについて行った。
生地の通気度の測定はJIS L1913-2010 フラジール形法に基づき、15cm×15cmの大きさの試験片を通過する空気量とした。得られた通過する空気量の3回測定の平均値を通気度とした。
捕集効率の測定は生地について、捕集性能測定装置で測定した。この捕集性能測定装置は、測定サンプルをセットするサンプルホルダーの上流側にダスト収納箱を連結し、下流側に流量計、流量調整バルブ、ブロワを連結している。また、サンプルホルダーにパーティクルカウンターを使用し、切り替えコックを介して、測定サンプルの上流側のダスト個数と下流側のダスト個数をそれぞれ測定することができる。さらに、サンプルホルダーは圧力計を備え、サンプル上流、下流の静圧差ΔPを読みとることができる。捕集性能の測定にあたっては、直径0.3μmのポリスチレン標準ラテックスパウダー(ナカライテスク(株)製0.309Uポリスチレン10質量%溶液を蒸留水で200倍に希釈)をダスト収納箱に充填し、試料をホルダーにセットし、風量をフィルター通過速度が1m/分になるように流量調整バルブで調整し、ダスト濃度を1万~4万個/2.83×10-4m3(0.01ft3)の範囲で安定させ、安定後30秒後の、サンプルの上流のダスト個数Dおよび下流のダスト個数dをパーティクルカウンター(リオン社製、KC-01E)で1サンプルあたり3回測定し、得られた上流のダスト個数D(粒子径0.5-1.0μm)と下流のダスト個数d(粒子径0.5-1.0μm)の3回の測定値の平均値から下記算式にて、捕集性能 T(%)を求めた。本操作を10サンプルについて同様に行い、10サンプルの捕集効率の平均値を算出した。得られた捕集効率が20%以上である場合を合格とした。
捕集効率T(%)=〔1-(d/D)〕×100
(5)にて捕集効率Tを測定した際のサンプル上流、下流の静圧差ΔPより下記算式にて、QF値を求めた。
QF値=-Ln(T)/ΔP
JIS L1096(1999)で規定されるA法(45°カンチレバー法)に基づき測定し、タテ方向およびヨコ方向の平均値を値とし、単位をmmで表した。
100mm角の生地の試験片を5枚用意し、それらを温度20℃、湿度65%RHの雰囲気中にて24hr静置し、その後に、5枚の試験片それぞれの初期質量(g)を測定した。次に、300ml容量の容器に充填された、温度50℃に設定された200mlの溶媒(キシレン)に5枚の試験片を6時間含浸させた。次いで、再度、5枚の試験片を300ml容量の容器に充填された、温度50℃に設定された200mlの溶媒(キシレン)に6時間浸漬させた。続いて、5枚の試験片を温度140℃雰囲気中にて2hr静置した。続いて、5枚の試験片を温度20℃、湿度65%RHの雰囲気中にて24hr静置し、その後に、5枚の試験片それぞれの質量(g)を測定し、下記式より各試験片の接着剤の含有量(g/m2)を計算し、試験片5枚の平均値を接着剤の含有量とした。
接着剤の含有量(g/m2)=(初期質量(g)-接着剤を除去した質量(g))/0.01
モニターが防護服(Mサイズ)を着用した後、踏み台昇降をした後の衣服内の温湿度および快適性(蒸し暑さ)をモニターが評価した。上記快適性試験を、同じ防護服に対して3名のモニターが実施し、3名のモニターの評価のうち、最も多い試験結果を最終試験結果として採用した。快適性試験に参加した3名のモニターは男性であり、体重は58~64kg、身長は168~174cmであった。
<試験方法>
各モニターには、以下のS1、S2、S3、S4、S5の順に沿って快適性試験を実施させた。
S1:パンツ(ポリエステル88%、ポリウレタン12%)と綿のくるぶし靴下のみを着る。
S2:首の後ろに温湿度センサを貼り付け、防護服を着用し、スニーカーを履く。
(温湿度センサ:T&D社製SHA-3151、データロガー:T&D社製おんどとりTR-72wf)
S3:20℃50%RH雰囲気の部屋にて30分間着席し、静止する。
S4:30℃50%RH雰囲気の部屋へ移動し、同雰囲気にて踏み台昇降を20分間行う。
(踏み台昇降間隔:15歩/10秒、踏み台高さ20cm)
S5:20分後の衣服内の温湿度を測定し、快適性を評価する。
<評価基準>
各モニターは、次の基準に沿って快適性を評価した。
A:蒸れがなく、快適性がとても優れていた。
B:蒸れが少なく、快適性が優れていた。
C:蒸れが多く、快適性が劣った。
モニターが防護服(Mサイズ)を着用した後、踏み台昇降をしているときの作業性(歩き易さ)と、剛軟度を評価しているときの作業性(評価のし易さ)をモニターが評価した。上記作業性試験を、同じ防護服に対して3名のモニターが実施し、3名のモニターの評価のうち、最も多い試験結果を最終試験結果として採用した。快適性試験に参加した3名のモニターは男性であり、体重は58~64kg、身長は168~174cmであった。
<試験方法>
各モニターには、以下のM1、M2の作業性試験を実施させた。
M1:(9)快適性試験方法において、踏み台昇降をしているときの作業性(歩き易さ)を評価する。
M2:(7)剛軟度のサンプルカット、評価しているときの作業性(評価のし易さ)を評価する。
<評価基準>
各モニターは、次の基準に沿って作業性を評価した。
A:歩き易く、評価し易く、作業性がとても優れていた。
B:やや歩き易く、やや評価し易く、快適性が優れていた。
C:歩き難く、評価し難く、快適性が劣った。
身体寸法は下記の項目を、巻き尺を用いて測定した。
身長 :床面から頭頂点までの鉛直距離
上腕長 :肩峰点から橈骨点までの直線距離
頸側・肩峰直線距離 :頸側点から肩峰点までの直線距離
頚窩高 :床面から頚窩点までの鉛直距離
胸骨中点高 :床面から胸骨中点までの鉛直距離
前腋窩幅 :左右の前腋窩点間の直線距離
肩甲骨下角間直線距離:左右の肩甲骨下角点間の直線距離
大腿長 :転子点から脛骨点までの鉛直距離
脛骨上縁高 :床面から脛骨点までの鉛直距離
2枚のポリプロピレン製のスパンボンド不織布(目付20g/m2)と、1枚の帯電を有しているポリプロピレン製のメルトブロー不織布(目付15g/m2、嵩密度0.14g/cm3、厚さ109μm、繊維径6μm)を用意した。次いで、スパンボンド不織布、メルトブロー不織布およびスパンボンド不織布がこの順に積層されているとともに、各層間が接着された第1の生地を用意した。ここで、第1の生地の各層間の接着は、ポリエチレンを主成分とするホットメルト接着剤を、スプレーを用いて各層間に配置して行った。第1の生地の各層間における、ホットメルト接着剤の含有量は、各層間当たり2.0g/m2であった。
実施例1の防護服が有する第1の生地が備える帯電を有しているポリプロピレン製のメルトブロー不織布を、帯電を有しているポリプロピレン製のメルトブロー不織布(目付15g/m2、嵩密度0.15g/cm3、厚さ100μm、繊維径4μm)とした以外は、実施例1と同様にし、第1の生地を用意した。第1の生地の特性は表1に示すとおりである。また、第1の生地が備えるメルトブロー不織布の構成は表2に示すとおりである。第1の生地が備える2枚のスパンボンド不織布の構成は表3に示すとおりである。
実施例1の防護服が有する第1の生地が備える帯電を有しているポリプロピレン製のメルトブロー不織布を、帯電を有しているポリプロピレン製のメルトブロー不織布(目付15g/m2、嵩密度0.16g/cm3、厚さ96μm、繊維径3μm)とした以外は、実施例1と同様にし、第1の生地を用意した。
実施例1の防護服が有する第1の生地と同様の生地を第1の生地として用意した。次に、実施例1の防護服が有する第2の生地が備えるポリプロピレン製のスパンボンド不織布を、ポリプロピレン製のスパンボンド不織布(目付20g/m2、嵩密度0.14g/cm3、厚さ141μm、繊維径18μm)とした以外は、実施例1と同様にし、第2の生地を用意した。
実施例1の防護服が有する第1の生地と同様の生地を第1の生地として用意した。次に、実施例1の防護服が有する第2の生地が備えるポリプロピレン製のスパンボンド不織布を、ポリプロピレン製のスパンボンド不織布(目付20g/m2、嵩密度0.13g/cm3、厚さ149μm、繊維径19μm)とした以外は、実施例1と同様にし、第2の生地を用意した。
実施例1の防護服が有する第1の生地と同様の生地を第1の生地として用意した。次に、実施例1の防護服が有する第2の生地が備えるポリプロピレン製のスパンボンド不織布を、ポリプロピレン製のスパンボンド不織布(目付20g/m2、嵩密度0.11g/cm3、厚さ190μm、繊維径22μm)とした以外は、実施例1と同様にし、第2の生地を用意した。
実施例1の防護服が有する第1の生地と同様の生地を第1の生地として用意した。次に、実施例1の防護服が有する第2の生地と同様の生地を第2の生地として用意した。
実施例1の防護服が有する第1の生地と同様の生地を第1の生地として用意した。次に、実施例1の防護服が有する第2の生地と同様の生地を第2の生地として用意した。
実施例1の防護服が有する第1の生地と同様の生地を第1の生地として用意した。次に、実施例1の防護服が有する第2の生地が備えるポリプロピレン製のスパンボンド不織布を、ポリプロピレン製のスパンボンド不織布(目付20g/m2、嵩密度0.18g/cm3、厚さ113μm、繊維径14μm)とした以外は、実施例1と同様にし、第2の生地を用意した。
実施例1の防護服が有する第1の生地が備える帯電を有しているポリプロピレン製のメルトブロー不織布を、帯電を有しているポリプロピレン製のメルトブロー不織布(目付15g/m2、嵩密度0.18g/cm3、厚さ85μm、繊維径3μm)とした以外は、実施例1と同様にし、第1の生地を用意した。
実施例1の防護服が有する第1の生地と同様の生地を第1の生地として用意した。次に、実施例1の防護服が有する第2の生地が備えるポリプロピレン製のスパンボンド不織布を、ポリプロピレン製のスパンボンド不織布(目付20g/m2、嵩密度0.09g/cm3、厚さ227μm、繊維径25μm)とした以外は、実施例1と同様にし、第2の生地を用意した。
実施例1の防護服が有する第1の生地と同様の生地を第1の生地として用意した。その後、得られた第1の生地から、防護服を構成する複数の領域に対応する複数のパーツを切り抜いた。次いで、フードを有するつなぎ型の防護服の形態とするべく、これらの複数のパーツをミシンにて縫合した。得られた防護服を比較例3の防護服とした。
実施例1の防護服が有する第2の生地と同様の生地を第2の生地として用意した。その後、得られた第2の生地から、防護服を構成する複数の領域に対応する複数のパーツを切り抜いた。次いで、フードを有するつなぎ型の防護服の形態とするべく、これらの複数のパーツをミシンにて縫合した。得られた防護服を比較例4の防護服とした。
実施例4の防護服(防護服17、図2~図3参照)において、第1の縫製部S1および第2の縫製部S2の位置を、それぞれ、着用者の右腕の付け根部分および左腕の付け根部分に変更した以外は、実施例4と同様の方法により、防護服22を作製した。得られた防護服の概念図を図12および図13に示す。
実施例11の防護服23は、実施例4の防護服(防護服17、図2~図3参照)において、さらに、身頃部分に、防護服の着用時に着用者の腰回りを覆う部分Gと、第1の生地と第2の生地とが縫製された縫製部(第3の縫製部S3)とを有する。防護服23の概念図を図14および図15に示す。上記の部分Gは、符号の24で示されている。この場合において、第2の生地は、部分Gに配置されている。また、部分Gには、着用者の腰回りを締め付けるギャザー部G1が形成されている。第3の縫製部S3は、ギャザー部G1よりも、着用者の頭部側に設けられている。
2 メルトブロー不織布層
3 背景
4 分割線
5 スパンボンド不織布層と重なっている分割線の長さ
6 メルトブロー不織布層と重なっている分割線の長さ
7 空洞に見える部位
8 スパンボンド不織布層と重なっている分割線の長さ
9 メルトブロー不織布層と重なっている分割線の長さ
10 着用者の右腕の肘関節を覆う部分A
11 着用者の左腕の肘関節を覆う部分B
12 着用者の大胸筋を覆う部分C
13 着用者の右足の膝関節を覆う部分E
14 着用者の左足の膝関節を覆う部分F
15 フード
16 着用者の肩甲下筋を覆う部分D
17、18、19、20、21、22、23 防護服
24 着用者の腰回りを覆う部分G
G1 ギャザー部
S1 第1の縫製部
S2 第2の縫製部
S3 第3の縫製部
Claims (12)
- 一対の袖部分と、身頃部分とを備える防護服であり、
前記一対の袖部分のうち、
一方の袖部分は、前記防護服の着用時に着用者の右腕の肘関節を覆う部分Aを備え、
他方の袖部分は、前記防護服の着用時に着用者の左腕の肘関節を覆う部分Bを備え、
前記身頃部分は、前記防護服の着用時に着用者の大胸筋を覆う部分Cを備え、
前記防護服は、通気度が30cm3/cm2/秒以上である第1の生地と、剛軟度が80mm以下である第2の生地と、を有し、
前記第1の生地は、
前記部分Cに配置され、かつ、
第1のスパンボンド不織布と第1のメルトブロー不織布との積層構造を有し、
前記第2の生地は、
前記部分Aおよび前記部分Bに配置され、かつ、
第2のスパンボンド不織布と第2のメルトブロー不織布との積層構造を有する、防護服。 - 前記第1のメルトブロー不織布の嵩密度は、0.05g/cm3以上0.18g/cm3以下であり、
前記第1のメルトブロー不織布の厚さは、70μm以上200μm以下であり、
前記第1のメルトブロー不織布は、帯電を有するメルトブロー不織布であり、
前記第1のスパンボンド不織布と前記第1のメルトブロー不織布とは、第1の接着剤によって接着され、前記第1の接着剤の含有量は、0.5g/m2以上5.0g/m2以下であり、
前記第2のメルトブロー不織布の嵩密度は、0.20g/cm3以上0.53g/cm3以下であり、
前記第2のメルトブロー不織布の厚さは、30μm以上120μm以下であり、
前記第2のスパンボンド不織布の嵩密度は、0.10g/cm3以上0.15g/cm3以下であり、
前記第2のスパンボンド不織布の厚さは、120μm以上200μm以下であり、
前記第2のスパンボンド不織布と前記第2のメルトブロー不織布とは、直接積層されるか、第2の接着剤によって接着され、前記第2の接着剤が使用される場合、前記第2の接着剤の含有量は、0g/m2を超え、0.4g/m2以下である、請求項1記載の防護服。 - 前記第1のメルトブロー不織布を構成する繊維の平均繊維径は、3μm以上15μm以下である、請求項1または2記載の防護服。
- 前記第1の生地のQF値は、0.30以上であり、
前記第2の生地のQF値は、0.20以下である、請求項1~3のいずれか1項に記載の防護服。 - 前記第1の生地の合計の面積は、防護服全体の面積に対し、15%以上70%以下であり、かつ、
前記第2の生地の合計の面積は、防護服全体の面積に対し、30%以上85%以下である、請求項1~4のいずれか1項に記載の防護服。 - さらにフードを備え、
前記身頃部分と前記フードとは、一体となっている、請求項1~5のいずれか1項に記載の防護服。 - さらに下衣を備え、
前記身頃部分と前記下衣とは、一体となっている、請求項1~6のいずれか1項に記載の防護服。 - 前記身頃部分は、前記防護服の着用時に着用者の肩甲下筋を覆う部分Dをさらに備え、
前記第1の生地は、前記部分Dに配置されている、請求項1~7のいずれか1項に記載の防護服。 - 前記フードの少なくとも一部は、前記第1の生地から構成されている、請求項6記載の防護服。
- 前記下衣は、
前記防護服の着用時に着用者の右足の膝関節を覆う部分Eと、
前記防護服の着用時に着用者の左足の膝関節を覆う部分Fとを備え、
前記第2の生地は、前記部分Eおよび前記部分Fに配置されている、請求項7記載の防護服。 - 前記一対の袖部分のうち、
一方の袖部分は、前記第1の生地と前記第2の生地とが縫製された第1の縫製部を有し、
他方の袖部分は、前記第1の生地と前記第2の生地とが縫製された第2の縫製部を有し、
前記第1の縫製部は、前記防護服の着用時に着用者の右腕の肘関節と、右腕の付け根部分との間に形成され、
前記第2の縫製部は、前記防護服の着用時に着用者の左腕の肘関節と、左腕の付け根部分との間に形成される、請求項1~10のいずれか1項に記載の防護服。 - 前記身頃部分は、
前記防護服の着用時に着用者の腰回りを覆う部分Gと、
前記第1の生地と前記第2の生地とが縫製された第3の縫製部とを有し、
前記第2の生地は、前記部分Gに配置されており、
前記部分Gは、前記着用者の腰回りを締め付けるギャザー部を有し、
前記第3の縫製部は、前記ギャザー部よりも、前記着用者の頭部側に設けられている、請求項1~11のいずれか1項に記載の防護服。
Priority Applications (5)
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JP2021509237A JP6897898B1 (ja) | 2019-06-13 | 2020-04-14 | 防護服 |
MX2021014438A MX2021014438A (es) | 2019-06-13 | 2020-04-14 | Ropa protectora. |
US17/617,123 US20220167688A1 (en) | 2019-06-13 | 2020-04-14 | Protective clothing |
EP20822501.1A EP3984395A4 (en) | 2019-06-13 | 2020-04-14 | PROTECTIVE CLOTHING |
CN202080042282.5A CN113905626A (zh) | 2019-06-13 | 2020-04-14 | 防护服 |
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JP2019110102 | 2019-06-13 | ||
JP2019-110102 | 2019-06-13 |
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WO2020250565A1 true WO2020250565A1 (ja) | 2020-12-17 |
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PCT/JP2020/016425 WO2020250565A1 (ja) | 2019-06-13 | 2020-04-14 | 防護服 |
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US (1) | US20220167688A1 (ja) |
EP (1) | EP3984395A4 (ja) |
JP (1) | JP6897898B1 (ja) |
CN (1) | CN113905626A (ja) |
MX (1) | MX2021014438A (ja) |
WO (1) | WO2020250565A1 (ja) |
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MX2021014438A (es) | 2022-01-06 |
JP6897898B1 (ja) | 2021-07-07 |
CN113905626A (zh) | 2022-01-07 |
EP3984395A4 (en) | 2023-07-12 |
JPWO2020250565A1 (ja) | 2021-09-13 |
US20220167688A1 (en) | 2022-06-02 |
EP3984395A1 (en) | 2022-04-20 |
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