Chemical protective clothing

Abstract

To provide a protective clothing that combines high shielding properties and good workability. 【Solution means】The protective clothing 1 of the present invention includes a main body portion 10 made of non-woven fabric, an elastic portion 20 provided at the waist of the back surface 12 of the main body portion 10 and capable of expanding and contracting along the body circumference, and a folding portion 30 provided above the elastic portion 20 on the back surface 12 of the main body portion 10. The folding portion 30 is composed of a folding surface 31 formed by folding the lower part of the upper body back of the main body portion 10 inward, a facing surface 32 facing the folding surface 31, and two fixing edges 33 formed by overlapping and joining the both side edges of the folding surface 31 and the both side edges of the facing surface 32.

Description

[Technical Field]

[0001] The present invention relates to protective clothing, and more particularly to protective clothing that combines high shielding properties with good workability. [Background technology]

[0002] Protective clothing is used to shield workers from the external environment in environments where gaseous, liquid, or particulate hazardous substances are handled, and in clean rooms for semiconductors, pharmaceuticals, etc. Coverall-type protective clothing, in particular, provides high shielding because it covers the entire body, and is used by many companies and research facilities. Among protective clothing, chemical protective clothing that protects workers from chemical substances is standardized by the Japanese Industrial Standards (JIS). JIS T8115:2015 specifies the classification of chemical protective clothing (Type 1: airtight clothing, Type 2: positive pressure clothing, Type 3: sealed clothing for liquid protection, Type 4: sealed clothing for spray protection, Type 5: sealed clothing for suspended solid dust protection, and Type 6: sealed clothing for mist protection), as well as labeling and performance requirements. For this reason, workplaces that handle chemical substances are required to use products that are certified or compliant with JIS standards. Patent Document 1 discloses a chemical protective suit that includes a main body, arm sleeves, and leggings, with the arm sleeves and leggings configured to be detachable from the main body. Patent Document 2 discloses a chemical protective suit in which reinforcing materials are sewn to the areas corresponding to the wearer's elbows, knees, and buttocks, and the sewn locations of the reinforcing materials are sealed with a sealant. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-000970 [Patent Document 2] Utility Model Registration No. 3234093 Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional protective clothing, since the shape of the back is flat, when the wearer takes a forward-leaning or bending posture during work, the fabric on the back side may be stretched. In particular, chemical protective clothing often uses non-woven fabric that combines breathability and shielding properties. Due to the limited stretchability of the fabric structure, stretching is likely to occur. For this reason, the degree of freedom of movement is restricted, which may have an adverse effect on work efficiency and safety. Also, when accompanied by long-term work or complex movements, this stretching becomes a heavy burden on the wearer and a factor that promotes fatigue and stress. On the other hand, if a size that is too large for the wearer's body is worn, the stretching can be reduced, but the fabric becomes bulky and hinders movement, may get caught during work and cause accidents, or there is a risk that chemicals accumulate in the folds and diffuse the chemicals.

[0005] An object of the present invention is to provide a protective clothing for solving the above problems.

Means for Solving the Problems

[0006] The protective clothing of the present invention includes a main body portion made of non-woven fabric, an elastic portion provided at the back waist portion of the main body portion and capable of stretching along the body circumference, and a folding portion provided above the elastic portion on the back of the main body portion. The folding portion is composed of a folding surface formed by folding the lower part of the upper body back of the main body portion inward, an opposing surface opposing the folding surface, and two fixed edges formed by overlapping and joining the both side edges of the folding surface and the both side edges of the opposing surface.

[0007] The protective clothing of the present invention has a three-layer structure in which the main body portion is composed of a non-woven barrier layer and two non-woven reinforcing layers sandwiching both sides of the barrier layer, and the average pore diameter of the barrier layer may be smaller than the average pore diameter of the reinforcing layer.

[0008] The elastic portion of the protective clothing of the present invention may be provided only on the back side of the main body portion.

[0009] The height of the folding surface of the protective clothing of the present invention may be within the range of 50 mm to 100 mm.

Advantages of the Invention

[0010] The protective clothing of the present invention ensures a fitting feeling to the body by means of the stretchable part around the torso. When the body bends forward, the folded-back part on the back unfolds in the height direction, so the back is not likely to be taut. Therefore, workability is high, and damage due to the tautness of the fabric on the back can be prevented. As a result, high shielding performance and good workability can be achieved simultaneously. Also, when bending forward, the folded-back part opens and closes, and by circulating the air inside the protective clothing, the air inside the protective clothing can be refreshed, enhancing comfort.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2A

Figure 2B

Modes for Carrying Out the Invention

[0012] Hereinafter, the protective clothing of the present invention will be described in detail with reference to the drawings.

Examples

[0013] <1> Protective clothing (Fig. 1) The protective clothing 1 is an overall cover type protective clothing that covers from the wearer's head to the feet. In this example, an example where the protective clothing 1 is a chemical protective clothing specified in JIS T8115:2015 will be described. However, the use of the protective clothing 1 is not limited to chemical protective clothing, and it may be various work protective clothing. The protective clothing 1 includes at least a main body part 10, a stretchable part 20, and a folded-back part 30. Specifically, on the back 12 of the main body part 10, a stretchable part 20 is provided at the waist, and a folded-back part 30 is provided above the stretchable part 20.

[0014] <2> Main body part The main body part 10 is the main body structure of the protective clothing 1. The main body part 10 is made of non-woven fabric as a whole. In this example, the main body part 10 adopts a front-fastener structure including a hood, a front fastener, a fastener cover, a hood rubber, a cuff rubber, etc. However, the structure of the main body part 10 is not limited to the front-fastener structure, and an appropriate structure can be adopted according to the use of the protective clothing 1. In this example, as the fabric of the main body part 10, a polypropylene long fiber non-woven fabric "Split Top (registered trademark)" manufactured by Maeda Kogyo Sen-i Co., Ltd. is adopted. The polypropylene long fiber non-woven fabric has excellent properties such as air permeability, water repellency, and chemical resistance, and functions such as antibacterial property, flame retardancy, and hydrophilicity can be added, so it is suitable as the material of the main body part. However, the main body part 10 is not limited to being made of polypropylene, and for example, polyolefins such as polyethylene, polyesters such as polyethylene terephthalate (PET), polylactic acid, polycarbonate, urethane, fluorine-based resins, and mixtures thereof can be adopted.

[0015] <2.1> Three-layer structure In this example, the main body part 10 is composed of a three-layer structure of a barrier layer 10a and two reinforcing layers 10b. The barrier layer 10a is a layer for shielding dust and mist. The reinforcing layer 10b is a layer for protecting the barrier layer 10a. The average pore diameter of the barrier layer 10a is smaller than that of the reinforcing layer 10b. In this example, by combining the barrier layer 10a having both air permeability and shielding property and the highly durable reinforcing layer 10b, the comfort of the wearer can be ensured, exposure to dust and mist can be prevented, and damage to the fabric due to abrasion and tension can be reduced. The three-layer main body 10 can be manufactured, for example, by the SMS manufacturing method in which the barrier layer 10a is formed by the melt blown method with a low density and flexibility, the reinforcing layer 10b is formed by the spunbond method with a high density and high durability against friction, and both sides of the barrier layer 10a are sandwiched between the reinforcing layers 10b and integrated by heating and pressing. In addition, it may be manufactured by a manufacturing method such as dry lamination, thermal lamination, extrusion lamination, needle punch manufacturing method, etc.

[0016] <3> Stretchable part The stretchable part 20 is a structure for ensuring the adhesion around the body of the main body 10. The stretchable part 20 is provided along the body circumference at the waist of the back surface 12 of the main body 10. In this example, as the stretchable part 20, a rubber shirring structure in which rubber is sewn into the fabric of the main body 10 is adopted. However, the stretchable part 20 is not limited to the rubber shirring structure, and may be a structure with a built-in rubber band, a gather structure, a stretch panel structure, etc. By supporting the fabric of the back surface 12 at the waist position by the stretchable part 20, it is possible to prevent the folded part 30 from spreading downward due to the weight of the fabric and the back surface 12 from hanging downward.

[0017] <3.1> Arrangement of the stretchable part In this example, the stretchable part 20 is provided only on the back surface 12 of the main body 10. Since the protective clothing 1 is often used for tasks that bend the body forward and rarely for tasks that arch the body backward, there is little need to continue the stretchable part 20 to the front surface 11 side. On the other hand, if the stretchable part 20 is provided around the entire circumference of the body, not only will it be difficult to put on and take off the protective clothing 1, but there is also a possibility that the stretchable part 20 will get caught during work or chemical substances will accumulate in the unevenness of the stretchable part 20. For this reason, it is desirable that the stretchable part 20 is provided only on the back surface 12 of the protective clothing 1 and the front surface 11 side is kept flat.

[0018] <4> Folded part (Figs. 2A, 2B) The folded part 30 is a structure for ensuring the stretchability of the main body 10 in the height direction. The folding part 30 is provided above the telescopic part 20 on the back surface 12 of the main body part 10. The folding part 30 includes at least a folding surface 31, an opposing surface 32, and two fixing edges 33. The folding surface 31 is a surface facing the front surface 11 direction of the main body part 10. The opposing surface 32 faces the back surface 12 direction of the main body part 10 and is a surface opposing the folding surface 31. The fixing edge 33 is an edge part that fixes both sides of the folding surface 31 and the opposing surface 32. The folding part 30 can be formed, for example, by folding the lower part of the upper back of the main body part 10 in an S shape toward the front surface 11 direction to form the folding surface 31 and the opposing surface 32, and overlapping and joining the both side edges of the folding surface 31 and the both side edges of the opposing surface 32. With this structure, since the opening direction of the folding part 30 is downward, the risk of liquid or solid chemical substances staying in the folding part 30 can be eliminated. The size of the folding part 30 can be appropriately set according to the size and use of the protective clothing 1. From the perspective of workability, it is preferable that the height of the folding surface 31 is within the range of 30 mm to 120 mm, and more preferably within the range of 50 mm to 100 mm.

[0019] <4.1>Function of the folding part When the wearer of the protective clothing 1 is standing upright, the folding surface 31 and the opposing surface 32 are close to each other and the back surface 12 is maintained in a flat state. When the wearer of the protective clothing 1 bends forward, the back surface 12 is pulled up and down, and the folding surface 31 automatically unfolds with respect to the opposing surface 32. Thereby, it is possible to prevent the back surface 12 from bulging or tearing. In addition, since the protective clothing 1 covers the whole body of the wearer, the humidity inside is likely to rise and it is stuffy. However, by opening and closing the folding surface 31, the air inside the protective clothing 1 circulates, and the effect of refreshing the internal environment can be expected. Thereby, a comfortable wearing feeling can be maintained even during long - term work.

Explanation of reference numerals

[0020] 1 Protective clothing 10 Main body part 10a Barrier layer 10b Reinforcing layer 11 Front surface 12 Rear surface 20 Stretchable part 30 Folding part 31 Folding surface 32 Opposing surface 33 Fixed edge

Claims

1. A chemical protective suit that can cover the wearer from the head to the feet (excluding a configuration where the upper body and the lower body are separable), comprising a main body made of non-woven fabric, an elastic part provided only at the back waist of the main body and capable of stretching along the torso, and a folding part provided above the elastic part on the back of the main body, wherein the folding part consists of a folding surface formed by folding the lower part of the upper body back of the main body inward, an opposing surface facing the folding surface, and two fixed edges formed by overlapping and joining both side edges of the folding surface and both side edges of the opposing surface, and is a continuous structure without seams from the upper body back of the main body to the opposing surface, and in the state where the wearer is wearing it, the elastic part supports the fabric on the back of the main body at the waist position to prevent the downward sagging of the opposing surface. Chemical protective suit.

2. The main body consists of a three-layer structure of a non-woven barrier layer and two non-woven reinforcing layers sandwiching both sides of the barrier layer, characterized in that the average pore diameter of the barrier layer is smaller than the average pore diameter of the reinforcing layer. The chemical protective suit according to Claim 1.

3. Characterized in that the height of the folding surface is in the range of 50 mm to 100 mm. The chemical protective suit according to Claim 1.

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