JP7704513B2 - protective clothing - Google Patents

Description

The present invention relates to protective clothing.

Protective clothing is worn to prevent harmful substances, such as chemicals, viruses, pathogens, radioactive materials, and other harmful dust, from adhering to and penetrating the human body. For this reason, protective clothing is manufactured using materials with barrier properties. There are various types of protective clothing, but among them, coverall-type protective clothing is used as a highly airtight protective clothing that prevents the wearer from being exposed to harmful environments.

Patent Document 1 discloses protective clothing made of a barrier fabric, in which at least one elastomer strip is configured on the back of the main body portion, and the elastomer strip is configured to form a V-shaped portion, the V-shaped portion including a tip portion located at a point on the lower back, a first extension portion extending from the tip portion through the right underarm to the end of the right sleeve on the wrist side, and a second extension portion extending from the tip portion through the left underarm to the end of the left sleeve on the wrist side.

Patent No. 5317220

However, highly airtight protective clothing restricts the wearer's range of motion, resulting in poor mobility, which not only reduces work efficiency but also causes physical and psychological stress to the wearer. For this reason, there is a demand for the development of protective clothing that is both easy to work in and comfortable to wear.

The present invention was made in consideration of these circumstances, and its main objective is to provide protective clothing that is easy to work with and comfortable to wear.

As a result of intensive research into achieving the above-mentioned object, the inventor discovered a protective suit that includes at least a torso, arms connected to the torso and having cuffs, legs connected to the torso and having leg openings, and a head connected to the torso and having a head opening for passing the head through, in which an elastic member that is stretched 1.25 to 3.3 times its natural length is joined and positioned around at least a portion of the waist of the torso, the ratio of the thigh circumference to the crotch length is 45 to 55%, and the ratio of the crotch length L7 to the armpit length is 30 to 40%, and thus completed the present invention.

In other words, the present invention is as follows.

(1)
The protective clothing includes at least a torso, arms connected to the torso and having cuffs, legs connected to the torso and having leg openings, and a head connected to the torso and having a head opening for passing the head through, wherein an elastic member that is stretched 1.25 to 3.3 times its natural length is joined and positioned around at least a portion of the waist of the torso, the ratio of the thigh circumference to the crotch length being 45 to 55%, and the ratio of the rise length to the armpit length being 30 to 40%.
(2)
The protective clothing in question is (1), in which the ratio of waist circumference to chest circumference is 50 to 65%.
(3)
The protective clothing according to (1) or (2), in which the ratio of the crotch length to the rear body length is 70 to 85%.
(4)
The protective clothing according to any one of (1) to (3), in which the ratio of the sleeve length to the back body length is 85 to 95%.
(5)
The protective clothing according to any one of (1) to (4), in which the ratio of the sleeve circumference to the chest circumference is 40 to 50%.
(6)
The protective clothing is any one of the protective clothing (1) to (5) made of a fabric with barrier properties.
(7)
The protective clothing according to any one of (1) to (6), wherein the fabric of the protective clothing is at least one selected from the group consisting of a nonwoven fabric, a resin, and a laminate including a nonwoven fabric layer and a resin layer.
(8)
The protective clothing of any one of (1) to (7), wherein the basis weight of the fabric of the protective clothing is 25 to 125 g/ ^m2 .
(9)
The protective suit according to any one of (1) to (8), wherein a fastener for putting on and taking off the suit is provided on the front of the torso portion along the vertical direction.
(10)
The protective clothing is any one of the protective clothing (1) to (9) that is an airtight clothing conforming to JIS T8115.

The present invention provides protective clothing that is easy to work with and comfortable to wear.

FIG. 1 is a front view of an example of protective clothing according to this embodiment. FIG. 2 is a rear view of an example of protective clothing according to this embodiment. FIG. 3 is a front view for explaining the relationship between the crotch and thigh circumferences in an example of protective clothing according to this embodiment. FIG. 4 is a front view for explaining the relationship between the armpit length and the crotch length in an example of protective clothing according to this embodiment. FIG. 5 is a rear view illustrating the relationship between the back length and the sleeve length in an example of protective clothing according to this embodiment. FIG. 6 is a front view for explaining the relationship between the chest circumference and the sleeve circumference in an example of protective clothing according to this embodiment.

The following describes in detail the form for carrying out the present invention (hereinafter, simply referred to as the "present embodiment"). The following present embodiment is an example for explaining the present invention, and is not intended to limit the present invention to the following content. The present invention can be carried out with appropriate modifications within the scope of its gist.

In addition, in the drawings, the same elements are given the same reference numerals, and duplicate explanations are omitted. Furthermore, unless otherwise specified, the positional relationships such as up, down, left, and right are based on the positional relationships shown in the drawings. Furthermore, the dimensional ratios of the drawings are not limited to the ratios shown in the drawings.

Furthermore, in this specification, any term with "abbreviation" indicates the meaning of the term excluding "abbreviation" within the scope of common technical knowledge of a person skilled in the art, and includes the meaning itself excluding "abbreviation."

Figure 1 is a front view of an example of protective clothing according to this embodiment. Figure 2 is a rear view of an example of protective clothing according to this embodiment.

The protective clothing 1 according to the present embodiment includes at least a torso 10, arms (right arm 20, left arm 30) connected to the torso 10 and having cuffs (right arm cuff 21, left arm cuff 31), legs (right leg 40, left leg 50) connected to the torso 10 and having leg openings (right leg opening 41, left leg opening 51), and a head 60 connected to the torso 10 and having a head opening 61 for passing the head through. The protective clothing 1 is an overall-type protective clothing (full-body protective clothing) in which the upper and lower body are integrated. The torso 10, arms (right arm 20, left arm 30), legs (right leg 40, left leg 50), and head 60 are integrated by, for example, sewing, bonding, heat fusion, ultrasonic bonding, vulcanization, etc. The protective clothing 1 according to the present embodiment may also be called "protective clothing" or the like.

The torso 10 is composed of a torso front 11 and a torso back 12, and a fastener 14 is provided on the front (torso front 11) along the vertical direction. The fastener 14 is preferably provided in the approximate center of the torso front 11 along the body axis direction in a front view. The wearer puts on and takes off the protective suit 1 by opening and closing the fastener 14. The position of the fastener 14 is not limited, but it is preferably arranged in the approximate center of the torso 10 along the body axis direction in a front view, as shown in FIG. 1. The upper stop of the fastener 14 is preferably provided on the periphery of the head opening 61. Furthermore, the lower stop of the fastener 14 is preferably provided at a position lower than the waist area. By arranging the fastener 14 in this way, it is possible to make putting on and taking off the protective suit 1 even easier. Although not shown in the figure, when putting on the protective suit 1, the slider is pulled up from the lower stop to the upper stop. When removing the protective clothing 1, the slider that has been pulled up to the top stop is pulled down toward the bottom stop. Furthermore, in order to improve airtightness, a fastener cover may be provided on the fastener 14. The fastener 14 may also be a hook-and-loop fastener or the like.

The elastic member 13, which is stretched 1.25 to 3.3 times its natural length, is attached and arranged at least in a part around the waist of the torso 10. That is, the stretch ratio of the elastic member 13 of the torso 10 is 1.25 to 3.3 times. The lower limit of the stretch ratio is preferably 1.35 times or more, more preferably 1.45 times or more, and even more preferably 1.65 times or more. The upper limit of the stretch ratio is preferably 2.7 times or less, more preferably 2.1 times or less, and even more preferably 1.8 times or less. The stretch ratio refers to the ratio (B/A) of the stretched length (B) to the natural length (A) in the unloaded state. For example, when an elastic member 13 with a natural length of 10 cm is fixed around the waist of the torso 10 in a stretched state of 25 cm, the stretch ratio is 2.5 times (= 25 cm ÷ 10 cm). By arranging the elastic member at this stretch ratio, it is possible to suppress bagging around the waist while exerting a contraction force that does not cause excessive tightness.

The elastic members 13 may be arranged around the entire circumference of the abdomen, but are preferably arranged continuously and intermittently at a predetermined interval in the waist direction (horizontal direction). By leaving such intervals, it is possible to apply an appropriate amount of tightening to the abdomen. Specifically, the interval between adjacent elastic members 13 in the circumferential direction is preferably 0.5 cm to 4 cm, more preferably 1 cm to 3 cm, and even more preferably 1 cm to 2 cm. Furthermore, when elastic members 13 are arranged intermittently, it is preferable that they are not arranged in the area where fasteners 14 are arranged. Furthermore, when three or more elastic members 13 are arranged, the intervals between each of them can be appropriately arranged within the above range.

The material of the elastic member 13 may be any material having elasticity, and may include, but is not limited to, synthetic rubber, natural rubber, elastomer, etc. The elastic member 13 may be fixed to the body 10 by sewing, heat fusion, etc.

The right arm 20 is provided with a right arm cuff 21 through which the right hand is exposed to the outside. Although not shown, the right hand can be protected by wearing a separate glove or the like. From the viewpoint of ensuring the airtightness of the protective clothing 1, it is preferable that the right arm cuff 21 is provided with the above-mentioned elastic member 22. When the elastic member 22 is used for the right arm cuff 21, the elongation ratio is preferably 1.55 to 3.0 times, more preferably 1.85 to 2.7 times, and even more preferably 2.15 to 2.4 times. Furthermore, it is preferable that the right arm cuff 21 is provided with gathers. Similarly, it is preferable that the left arm cuff 31 provided on the left arm 30 is provided with an elastic member 32. It is preferable that the right arm 20 and the left arm 30 have symmetrical shapes and dimensions. The material of the elastic members 22, 32 can be the material described as the material of the elastic member 13 of the torso 10.

The right leg 40 is provided with a right leg opening 41, through which the right leg is exposed to the outside. Although not shown, the right leg can be protected by wearing separate shoes or the like. In order to ensure the airtightness of the protective suit 1, it is preferable that the right leg opening 41 is provided with the above-mentioned elastic member 42. When the elastic member 42 is used for the right leg opening 41, the elongation ratio is preferably 1.55 to 3.0 times, more preferably 1.85 to 2.7 times, and even more preferably 2.15 to 2.4 times. Furthermore, it is preferable that the right leg opening 41 is provided with gathers. Similarly, it is preferable that the left leg opening 51 provided in the left leg 50 is provided with an elastic member 52. It is preferable that the right leg 40 and the left leg 50 have symmetrical shapes and dimensions. The material of the elastic members 42, 52 can be the material described as the material of the elastic member 13 of the torso 10.

The head 60 is provided with a head opening 61 through which the face is exposed to the outside. Although not shown, the face can be protected by wearing a mask, a protective mask, protective glasses, etc. From the viewpoint of ensuring the airtightness of the protective suit 1, it is preferable that an elastic member 62 is arranged around the periphery of the head opening 61. When the elastic member 62 is used for the head opening 61, the elongation ratio is preferably 1.35 to 2.7 times, more preferably 1.45 to 2.1 times, and even more preferably 1.65 to 1.8 times. The material of the elastic member 62 can be the material described as the material of the elastic member 13 of the torso 10. Furthermore, it is preferable that the head opening 61 is provided with gathers.

The fabric of the protective clothing 1 may be any fabric capable of preventing the intrusion of substances to be protected against (e.g., specific chemical substances, viruses, bacteria, radioactive substances, dust, liquids, gases, etc.). From this viewpoint, the fabric of the protective clothing 1 is preferably a barrier fabric. The type of fabric can be selected according to the application, but is preferably at least one type selected from the group consisting of nonwoven fabric, resin, and laminates including a nonwoven fabric layer and a resin layer. Specific examples of materials for the protective clothing include spunbond nonwoven fabric, SMS nonwoven fabric, resin film, and laminates thereof.

Spunbond nonwoven fabrics are economical and strong, and are suitable, for example, for disposable protective clothing. As spunbond nonwoven fabrics, spunbond nonwoven fabrics made of thermoplastic resins such as polypropylene, polyethylene, and polyethylene terephthalate are preferred. Among thermoplastic resins, polypropylene is more preferred from the standpoints of economical and strength. The content of the thermoplastic resin contained in the spunbond nonwoven fabric is preferably 90% by mass or more, more preferably 95% by mass or more, and even more preferably 100% by mass.

The SMS nonwoven fabric is suitable for use as, for example, medical protective clothing, since it has excellent strength, breathability, and filtration effect. The SMS nonwoven fabric is a laminated nonwoven fabric in which a meltblown nonwoven fabric is disposed between a first spunbond nonwoven fabric and a second spunbond nonwoven fabric. The first spunbond nonwoven fabric and the second spunbond nonwoven fabric can be the above-mentioned spunbond nonwoven fabric. The meltblown nonwoven fabric is preferably a meltblown nonwoven fabric made of a thermoplastic resin such as polypropylene, polyethylene, or polyethylene terephthalate. Among thermoplastic resins, polypropylene is more preferable from the viewpoints of economy and strength. The content of the thermoplastic resin contained in the spunbond nonwoven fabric is preferably 90% by mass or more, more preferably 95% by mass or more, and more preferably 100% by mass.

The resin film is preferably, for example, a thermoplastic resin film. Examples of thermoplastic resin films include olefin-based films such as polyethylene film and polypropylene film. For example, the polyethylene film is preferably a porous film. It is preferable that the porous polyethylene film has small holes that allow gases such as water vapor to pass through but not liquids. Such polyethylene films are suitable because they are moisture permeable and can reduce stress even when the wearer sweats during long hours of work.

Furthermore, a laminate containing the above-mentioned polypropylene spunbond nonwoven fabric or SMS nonwoven fabric and a polyethylene film can be used. The layer structure of the laminate is not particularly limited, and may be, for example, a two-layer structure such as nonwoven fabric/polyethylene film, or a three-layer structure such as a first nonwoven fabric/polyethylene film/second nonwoven fabric. An example of such a laminate is a polyethylene film laminated nonwoven fabric. Specifically, a laminate in which a polyethylene film is laminated to a polypropylene spunbond nonwoven fabric or SMS nonwoven fabric is exemplified. These have excellent dust collection capabilities and are therefore suitable, for example, as protective clothing against airborne solid dust.

Each of the above-mentioned materials may be subjected to a surface treatment such as an antistatic treatment as necessary. Alternatively, they may contain additives such as flame retardants.

Among these, from the viewpoint of excellent water resistance and oil resistance, it is usually preferable to use one or more selected from the group consisting of polypropylene spunbond nonwoven fabric; SMS nonwoven fabric; and a laminate containing polypropylene spunbond nonwoven fabric or SMS nonwoven fabric and a polyethylene film.

The basis weight of the fabric of the protective clothing 1 is preferably 25 to 125 g/ ^m2 . The upper limit of the basis weight is more preferably 100 g/m2 or ^less , and even more preferably 80 g/ ^m2 or less. The lower limit of the basis weight is more preferably 45 g/ ^m2 or more, and even more preferably 55 g/m2 or ^more . Protective clothing 1 with such a basis weight is usually made of a lightweight and thin material, and is also suitable for disposable protective clothing, etc.

The following describes the sizes of the protective clothing 1 according to this embodiment. Unless otherwise specified below, the sleeve length and sleeve circumference are the average lengths of the right arm 20 and left arm 30, respectively, and the thigh circumference and armpit length are the average lengths of the right leg 40 and left leg 50, respectively. Furthermore, each size below is measured without allowing any slack in the fabric.

Figure 3 is a front view illustrating the relationship between the crotch and thighs in an example of protective clothing according to this embodiment.

In the protective clothing 1, the ratio of the thigh circumference L5 to the crotch length L4 (L5/L4;%) is 45-55%. The upper limit of this ratio is preferably 50% or less, more preferably 49% or less, and even more preferably 48% or less. The lower limit of this ratio is preferably 46% or more, and more preferably 47% or more.

Figure 4 is a front view illustrating the relationship between armpit length and crotch length in an example of protective clothing according to this embodiment.

In the protective clothing 1, the ratio of the crotch length L7 to the armpit length L6 (L7/L6;%) is 30-40%. The upper limit of this ratio is preferably 37% or less, more preferably 36% or less, and even more preferably 35% or less. The lower limit of this ratio is preferably 31% or more, more preferably 32% or more, and even more preferably 33% or more.

The protective clothing 1 preferably has a ratio of the abdominal circumference length L2 to the chest circumference length L1 (L2/L1;%) of 50-65% (see, for example, FIG. 1). The upper limit of this ratio is more preferably 62% or less, and even more preferably 61% or less. The lower limit of this ratio is more preferably 51% or more, and even more preferably 52% or more.

The protective clothing 1 preferably has a ratio of the crotch length L4 to the back body length L3 (L4/L3;%) of 70-85% (see, for example, FIG. 2). The upper limit of this ratio is more preferably 83% or less, and even more preferably 82% or less. The lower limit of this ratio is more preferably 73% or more, even more preferably 75% or more, and even more preferably 76% or more.

Figure 5 is a rear view illustrating the relationship between the back length and sleeve length in an example of protective clothing according to this embodiment.

The protective clothing 1 preferably has a ratio of the sleeve length L8 to the back body length L3 (L8/L3;%) of 85 to 95%. The upper limit of this ratio is more preferably 93% or less, and even more preferably 92% or less. The lower limit of this ratio is more preferably 86% or more, and even more preferably 87% or more.

Figure 6 is a front view illustrating the relationship between the chest circumference and sleeve circumference in an example of protective clothing according to this embodiment.

The protective clothing 1 preferably has a ratio of the sleeve circumference length L9 to the chest circumference length L1 (L9/L1;%) of 40 to 50%. The upper limit of this ratio is more preferably 47% or less, and even more preferably 45% or less. The lower limit of this ratio is more preferably 41% or more, and even more preferably 42% or more.

The protective clothing 1 according to this embodiment has excellent workability because a wide range of motion can be ensured for the joints of the arms and legs by controlling the above-mentioned ratios in the size design so that they fall within the above-mentioned ranges. Furthermore, the fabric is not tightened more than necessary when worn, and loose fabric in the abdominal and arm areas, arm and sleeve areas, leg openings, etc. can be suppressed, reducing stress load when worn and providing excellent comfort when worn. Moreover, by combining the above-mentioned ratios, these effects are further improved. In particular, the protective clothing 1 can be made suitable for the body shapes of Asians, such as Japanese people.

For example, a wearer may need to put on and take off the protective clothing 1 at a certain frequency (e.g., once every few hours to several days) due to the working environment and legal regulations. Protective clothing used for such purposes is preferably disposable and economical. In this regard, the protective clothing 1 according to this embodiment can be manufactured from low-cost materials, and therefore can meet such requirements.

In the past, attempts were made to provide protective clothing with separate components to improve workability and comfort for the wearer, or to make the protective clothing larger. However, the protective clothing 1 according to this embodiment has a simple structure that does not require the provision of special components, yet can ensure a wide range of motion. Therefore, there is no decrease in work efficiency, and it is excellent in workability. Furthermore, the protective clothing 1 according to this embodiment can suppress unnecessary bagging of the fabric when worn, thereby reducing the physical and psychological stress load when worn, and is also excellent in comfort. Furthermore, as described above, the protective clothing 1 according to this embodiment does not require the provision of special components, and therefore is also excellent in economy in that fewer parts are required for manufacturing.

Protective clothing 1 is suitable for use as protective clothing worn when working with acids, alkalis, organic chemicals, other gases and liquids, and particulate chemicals, and is intended to prevent the penetration and/or permeation of such chemicals. Protective clothing 1 can be adapted to a variety of hazardous factors, and can be suitable for use, for example, as chemical protective clothing that protects the body from harmful chemicals, biohazard protective clothing that protects the body from pathogens, and radiation protective clothing that protects the body from radioactive materials.

The protective suit 1 has a simple structure, yet is easy to work with and comfortable to wear, so that even those who have little experience wearing protective suits can use it without feeling excessive stress. Therefore, the protective suit 1 can be suitably used as airtight suit conforming to JIS T8115 (2015), and can be suitably used as type 1 airtight suit in particular. The airtight suit is a suit that protects the whole body including the arms, legs, and head, and is a full-body protective suit with a structure that keeps the inside of the suit airtight. Specifically, it can be used as a self-contained breathing apparatus internal airtight suit, a self-contained breathing apparatus external airtight suit, an air-supplied airtight suit, etc. Of course, it goes without saying that it can also be used for other types of protective suits (e.g., positive pressure suits, sealed suits, etc.). In addition, as described above, the protective suit 1 can be manufactured from low-cost materials and has a simple structure, so it can be suitably used as disposable protective suit (e.g., simple protective suit, etc.).

Protective clothing 1 can be used in conjunction with partial protective items such as masks, hoods, visors, gloves, booties, footwear, etc., depending on the required level of protection and the object of protection. Protective clothing 1 has a simple structure that does not require the attachment of special members and parts, etc., and can therefore be used in conjunction with a wide variety of types and shapes of partial protective items.

1: Protective clothing, 10: Torso, 11: Front of torso, 12: Back of torso, 13: Elastic member of torso, 14: Zipper, 20: Right arm, 21: Right arm cuff, 22: Elastic member of right arm cuff, 30: Left arm, 31: Left arm cuff, 32: Elastic member of left arm cuff, 40: Right leg, 41: Right leg opening, 42: Elastic member of right leg opening, 50: Left leg, 51: Left leg opening, 52: Elastic member of left leg opening, 60: Head, 61: Head opening, 62: Elastic member of head opening, L1: Chest length, L2: Waist length, L3: Back length, L4: Inseam length, L5: Thigh length, L6: Armpit length, L7: Rise length, L8: Sleeve length, L9: Sleeve length

Claims (6)

A body portion and
An arm portion connected to the torso portion and having a cuff formed therein;
A leg portion connected to the torso portion and having a leg opening formed therein;
A head portion connected to the torso portion and having a head opening for passing the head therethrough;
A protective suit comprising at least
A stretchable member stretched to 1.25 to 3.3 times its natural length is joined and arranged around the waist of the torso portion,
The stretchable members are arranged intermittently at predetermined intervals around the entire circumference of the abdomen,
The ratio of thigh circumference to inseam length is 45-55%;
The ratio of the rise length to the armpit length is 30 to 40%;
The ratio of the length of the abdominal circumference when the stretchable member is at its natural length to the length of the chest circumference is 50 to 65%,
The ratio of the inseam length to the back length is 70 to 85%;
The ratio of the sleeve length to the back length is 85 to 95%;
The ratio of sleeve length to chest length is 40-50%.
Protective clothing. The protective clothing is made of a barrier fabric.
2. The protective suit of claim 1. The fabric of the protective clothing is at least one selected from the group consisting of nonwoven fabric, resin, and a laminate including a nonwoven fabric layer and a resin layer.
3. Protective clothing according to claim 1 or 2. The basis weight of the protective clothing fabric is 25 to 125 g / m ² ;
The protective suit according to any one of claims 1 to 3. A fastener for fastening and detaching is provided on the front of the torso along the vertical direction.
The protective suit according to any one of claims 1 to 4. The protective clothing is an airtight clothing conforming to JIS T8115.
The protective suit according to any one of claims 1 to 5.

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