JP7410266B1 - Protective materials and clothing - Google Patents

Abstract

An object of the present invention is to provide a protective material and protective clothing that can suppress an increase in the internal temperature of the protective clothing by suppressing the influence of radiant heat due to solar radiation. [Solution] This protective material 1A has an inner side and an outside side, and includes a first resin layer 11, a second resin layer 12, and a first reinforcing cloth 13. A first resin layer 11 is disposed, a second resin layer 12 is disposed inside the first resin layer 11, a reinforcing cloth 13 is disposed inside the second resin layer 12, and the first resin layer 11 is red. Contains external reflective material. As a result, it becomes possible to suppress the temperature rise inside the protective material 1A. [Selection diagram] Figure 1

Description

The present disclosure relates to protective materials and protective clothing for protecting the human body from toxic gases, liquids, and the like.

A technique related to a protective material that protects the human body from toxic gases, liquids, etc. is disclosed in, for example, Japanese Patent No. 5784812 (Patent Document 1). Such protective materials are required to have good gas permeation resistance and liquid resistance on the surface of the material, and techniques related to surface treatment of materials are disclosed, for example, in JP-A No. 2003-2903 (Patent Document 2) and It is disclosed in JP-A No. 2010-24279 (Patent Document 3).

Patent No. 5784812 Japanese Patent Application Publication No. 2003-2903 Japanese Patent Application Publication No. 2010-24279

Protective clothing made of protective materials covers the entire body, so when used outdoors, the inside of the protective clothing becomes hot due to the effects of radiant heat from sunlight. Therefore, it is difficult to wear the protective clothing for a long time, and as a result, the efficiency of work performed while wearing the protective clothing is reduced.

The present disclosure aims to solve the above-mentioned problems, and aims to provide a protective material and protective clothing that can suppress the increase in internal temperature of the protective clothing by suppressing the influence of radiant heat due to solar radiation. shall be.

[1] The protective material of the present disclosure has an inner side and an outside side, and includes a first resin layer, a second resin layer, and a first reinforcing cloth, and has the first resin layer on the outermost side. A resin layer is disposed, the second resin layer and the first reinforcing cloth are disposed inside the first resin layer, and an infrared reflector is kneaded into the first resin layer.

[2]: The protective material according to [1], wherein the second resin layer is arranged inside the first resin layer, and the first reinforcing cloth is arranged inside the second resin layer. There is.

[3]: The protective material according to [2], wherein a second reinforcing cloth is further disposed between the first resin layer and the second resin layer.

[4]: The protective material according to any one of [1] to [3], wherein the first resin layer is chlorinated polyethylene, and the infrared reflector is a metal oxide.

In the protective clothing of the present disclosure, the protective material according to any one of [1] to [4] above is used.

According to the present disclosure, it is possible to provide a protective material and protective clothing that can suppress an increase in the internal temperature of the protective clothing by suppressing the influence of radiant heat due to solar radiation.

FIG. 2 is a cross-sectional structural diagram of the protective material of Embodiment 1. FIG. 3 is a cross-sectional structural diagram of a protective material according to a second embodiment. FIG. 7 is a cross-sectional structural diagram of a protective material according to a third embodiment. It is a figure showing the evaluation result of the protective material of each embodiment. FIG. 7 is a front view showing the configuration of a protective clothing according to a fourth embodiment.

Protective materials and protective clothing according to each embodiment based on the present disclosure will be described below with reference to the drawings. In the embodiments described below, when referring to the number, amount, etc., the scope of the present invention is not necessarily limited to the number, amount, etc. unless otherwise specified. Identical or equivalent parts will be given the same reference numbers, and duplicate descriptions may not be repeated. It has been planned from the beginning to use the configurations in the embodiments in appropriate combinations. For ease of understanding, the film thicknesses and layer thicknesses shown in the figures are shown in different proportions from the actual ratios.

In the specification, "outside" means the side that is exposed to toxic gases and liquids when the protective material is used, and "inside" means the side that is exposed to toxic gases and liquids when the protective material is used. means the side that is not exposed to Therefore, when this protective material is used in protective clothing, the side that touches the wearer is the "inside".

[Embodiment 1: Protective material 1A]
With reference to FIG. 1, a protective material 1A of this embodiment will be described. FIG. 1 is a cross-sectional structural diagram of the protective material 1A.

The protective material 1A of this embodiment includes a first resin layer 11, a second resin layer 12, and a first reinforcing cloth 13. The first resin layer 11 is arranged at the outermost side, the second resin layer 12 is arranged inside the first resin layer 11, and the first reinforcing cloth 13 is arranged inside the second resin layer 12.

The thickness of the first resin layer 11 is approximately 0.10 mm to 0.30 mm, the thickness of the second resin layer 12 is approximately 12 μm, and the thickness of the first reinforcing cloth 13 is approximately 0.06 mm to 0.40 mm. It is. The total thickness of the protective material 1A is approximately 0.15 mm to 0.75 mm.

In this embodiment, chlorinated polyethylene is used for the first resin layer 11 as a highly flexible material. Materials other than chlorinated polyethylene include polyvinyl chloride, polyurethane, polyvinylidene chloride, polyvinyl acetate, polystyrene, polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-vinyl chloride-vinyl acetate copolymer, and acrylonitrile. Butadiene-styrene resin or the like is used. Furthermore, an infrared reflective agent is kneaded into the chlorinated polyethylene.

The infrared reflector refers to a material capable of reflecting light in the near-infrared region (780 nm to 2500 nm) included in natural light. For example, metal oxides (Fe ₂ O 3 , Mn ₃ O ₄ , Cr ₂ O ₃ , CoO, CuO), etc. are used as the infrared reflector. In this embodiment, the content of the infrared reflector contained in the first resin layer 11 is about 0.5% to 20%.

A PET film is used for the second resin layer 12. The first reinforcing cloth 13 is made of nylon fabric with a thread thickness of 70 decitex. The thickness of the thread is not limited to this thickness. Furthermore, the material is not limited to nylon. For example, polyester, cotton, etc. can also be used. Furthermore, other than woven fabrics, knits, thin woven fabrics, non-woven fabrics, etc. can also be used.

In the protective material 1A of this embodiment, an infrared reflective agent is kneaded into the first resin layer 11. Thereby, the solar reflectance can be increased by the first resin layer 11. As a result, it can be expected that the temperature rise inside the protective material 1A will be suppressed. Details will be described later using FIG. 4.

(Production method of protective material 1A)
As a manufacturing method of the protective material 1A, first, a moisture-curable adhesive layer (not shown) is interposed between the second resin layer 12 and the first reinforcing cloth 13, and the two are bonded to each other. A laminated structure of the second resin layer 12 and the first reinforcing cloth 13 is obtained.

Next, the resin forming the first resin layer 11 and an infrared reflective material are placed between the second resin layer 12 and the first resin layer 11 of the second resin layer 12 and the first reinforcing cloth 13 that are integrated with each other. Kneading is performed using a Banbury mixer, followed by kneading using a two-roll warm-up roll, and then using an inverted L-shaped four-roll calender to apply the above-mentioned kneaded product to the subbing surface of the second resin layer, which has undergone subbing processing. It was attached to a thickness of 0.3 mm. As described above, a protective material 1A having a three-layer structure of the first resin layer 11, the second resin layer 12, and the first reinforcing cloth 13 is obtained.

[Embodiment 2: Protective material 1B]
With reference to FIG. 2, the protective material 1B of this embodiment will be described. FIG. 2 is a cross-sectional structural diagram of the protective material 1B.

In the protective material 1B of this embodiment, the first resin layer 11 is arranged on the outermost side, the first reinforcing cloth 13 is arranged inside the first resin layer 11, and the second reinforcing cloth 13 is arranged inside the first reinforcing cloth 13. Layer 12 is arranged. The materials used for the first resin layer 11, the first reinforcing cloth 13, and the second resin layer 12, and the content of the infrared reflector in the first resin layer 11 are the same as those of the protective material 1A of the above embodiment. is the same as The thicknesses of the first resin layer 11, the first reinforcing cloth 13, and the second resin layer 12, and the total thickness of the protective material 1B are also the same as the protective material 1A of the above embodiment.

In the protective material 1B of this embodiment, an infrared reflector is kneaded into the first resin layer 11, similar to the protective material 1A. Thereby, the solar reflectance can be increased by the first resin layer 11. As a result, it can be expected that the temperature rise inside the protective material 1B will be suppressed. Details will be described later using FIG. 4.

(Production method of protective material 1B)
As a method for manufacturing the protective material 1B, first, a moisture-curing adhesive layer (not shown) is interposed between the second resin layer 12 and the first reinforcing cloth 13, and the two are bonded together. A laminated structure of the second resin layer 12 and the first reinforcing cloth 13 is obtained.

Next, the resin forming the first resin layer 11 and the infrared reflective material are placed between the first reinforcing cloth 13 and the first resin layer 11 of the second resin layer 12 and the first reinforcing cloth 13 that are integrated with each other. The undercoating surface of the first reinforcing cloth 13 is kneaded using a Banbury mixer, then kneaded using a two-roll warm-up roll, and then subjected to undercoating processing on the above-mentioned kneaded material using an inverted L-shaped four-roll calender. It was attached to a thickness of 0.3 mm. As described above, a protective material 1A having a three-layer structure of the first resin layer 11, the first reinforcing cloth 13, and the second resin layer 12 is obtained.

[Embodiment 3: Protective material 1C]
With reference to FIG. 3, the protective material 1C of this embodiment will be described. FIG. 3 is a cross-sectional structural diagram of the protective material 1C.

The basic structure of the protective material 1C of this embodiment is the same as that of the protective material 1A of the first embodiment, and the difference is that a second reinforcement layer is provided between the first resin layer 11 and the second resin layer 12. This is a configuration in which a cloth 14 is provided. The thickness and material of the second reinforcing cloth 14 are the same as those of the first reinforcing cloth 13. Also in the configuration of this protective material 1C, an infrared reflector is kneaded into the first resin layer, similar to the protective material 1A. Thereby, the solar reflectance can be increased by the first resin layer 11. As a result, it can be expected that the temperature rise inside the protective material 1C will be suppressed. Details will be described later using FIG. 4.

(Production method of protective material 1C)
As a manufacturing method for the protective material 1C, first, a moisture-curable adhesive layer (not shown) is interposed between the second resin layer 12 and the first reinforcing cloth 13, and the two are bonded together. A laminated structure of the second resin layer 12 and the first reinforcing cloth 13 is obtained. Next, the second resin layer 12 and the second reinforcing cloth 14 are pasted together with a moisture-curing adhesive layer (not shown) interposed between them, so that the second resin layer 12 and the second reinforcing cloth are integrated with each other. A laminated structure with cloth 14 is obtained. Thereby, a three-layer structure of the second reinforcing cloth 14, the second resin layer 12, and the first reinforcing cloth 13 is obtained.

Next, the first resin layer 11 is placed between the second reinforcing cloth 14 and the second resin layer 12 that are integrated with each other, and between the second reinforcing cloth 14 and the first resin layer 11 of the first reinforcing cloth 13. The resin and the infrared reflective material are kneaded using a Banbury mixer, then kneaded using a two-roll warm-up roll, and then subjected to an undercoating process using an inverted L-shaped four-roll calender. 2. It was attached to the undercoating surface of the reinforcing cloth 14 to a thickness of 0.3 mm. By the above, a protective material 1C having a four-layer structure of the first resin layer 11, the second reinforcing cloth 14, the second resin layer 12, and the first reinforcing cloth 13 is obtained.

[Evaluation results of protective materials 1A to 1C]
Next, the evaluation results of the protective materials 1A to 1C will be explained with reference to FIG. FIG. 4 is a diagram showing the evaluation results of the protective materials 1A to 1C and the evaluation results of Comparative Examples 1 to 3.

Compared to the configuration of the protective material 1A, the configuration of the protective material of Comparative Example 1 uses chlorinated polyethylene in which no infrared reflector is kneaded as the first resin layer 11, and further includes a second resin layer 12. is not provided. The structure of the protective material of Comparative Example 2 is different from the structure of the protective material 1C in that the first resin layer 11 is not provided. Compared to the configuration of the protective material 1A, the configuration of the protective material of Comparative Example 3 used chlorinated polyethylene in which no infrared reflector was kneaded as the first resin layer 11.

The following evaluation items were evaluated: ``color'', ``chemical resistance (gas barrier properties)'', ``flexibility'', ``solar radiation protection (surface temperature °C)'', and ``solar reflectance''. Regarding "solar reflectance," the evaluation is divided into "full wavelength range (300 nm to 2500 nm)," "near ultraviolet-visible light range (300 nm to 780 nm)," and "near infrared region (780 nm to 2500 nm)." I did it.

The evaluation results for the protective material 1A were that "chemical resistance (gas barrier properties)" passed, "flexibility (flexibility)" passed, and "solar radiation protection (surface temperature)" showed that the surface temperature was 54 degrees. In addition, good results were obtained for the "solar reflectance" of 42.3% in the "near infrared region (780 nm to 2500 nm)".

The evaluation results for the protective material 1B were that it passed for "chemical resistance (gas barrier properties)", passed for "flexibility (flexibility)", and had a surface temperature of 52 degrees for "solar radiation protection (surface temperature)". In addition, good results were obtained for the "solar reflectance" of 46.5% in the "near infrared region (780 nm to 2500 nm)".

The evaluation results for the protective material 1C were that it passed for "chemical resistance (gas barrier properties)", passed for "flexibility (flexibility)", and had a surface temperature of 53 degrees for "solar radiation protection (surface temperature)". In addition, good results were obtained for the "solar reflectance" of 45.3% in the "near infrared region (780 nm to 2500 nm)".

The evaluation results of the protective material of Comparative Example 1 showed that because no infrared reflector was incorporated into the chlorinated polyethylene of the first resin layer 11, a high evaluation was not obtained for "solar reflectance" and "solar radiation protection" was not obtained. (Surface temperature)" The surface temperature was 65 degrees.

In the evaluation results of the protective material of Comparative Example 2, since the first resin layer 11 was not provided, no evaluation of "solar radiation protection (surface temperature)" was performed. Furthermore, since the first resin layer 11 was not provided, it was evaluated as lacking in flexibility as a protective material.

The protective material of Comparative Example 3 has the same configuration as the protective material 1A of Embodiment 1, except that the infrared reflective agent is not mixed into the chlorinated polyethylene of the first resin layer 11, but the infrared As a result of not incorporating a reflective agent, the product did not receive a high evaluation for "solar reflectance" and the surface temperature was 65 degrees for "solar radiation countermeasures (surface temperature)."

[Embodiment 4: Protective clothing 100]
The configuration of protective clothing 100 in this embodiment will be described with reference to FIG. 5. FIG. 5 is a front view showing the configuration of the protective clothing 100.

This protective clothing 100 is manufactured using the protective material 1A, the protective material 1B, or the protective material 1C described in each of the above embodiments. In this way, by manufacturing the protective clothing 100 using the protective material 1A, the protective material 1B, or the protective material 1C, it is possible to suppress the temperature rise inside the protective clothing 100. As a result, it becomes possible to work for a long time (for example, decontamination work with harmful gases, liquids, etc.) while wearing the protective clothing 100, and it becomes possible to reduce the labor required for the work.

Furthermore, since it becomes possible to continue working while wearing the protective clothing 100, it becomes possible to perform prompt reconnaissance and life-saving activities inside and outside contaminated areas. Furthermore, it is also possible to give the wearer a sense of mental security.

Although the protective clothing 100 includes a top coat, a bottom coat, and a hood, the protective material in the present disclosure is a garment worn when entering or exiting an area that requires the same function. It can be widely applied to, etc.

In the above example, the protective material of the present invention is applied to protective clothing, but the protective material of the present invention can also be applied to other materials such as protective gloves, protective socks, protective hoods, protective covers, filters, protective awnings, sleeping bags, etc. Furthermore, it can be applied to a storage bag for storing these items. It can also be used as a sealing material for packing, gaskets, etc. of containers and devices that have protective properties.

The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims rather than the above description, and it is intended that all changes within the meaning and range equivalent to the claims are included.

1A, 1B, 1C protective material, 11 first resin layer, 12 second resin layer, 13 first reinforcing cloth, 14 second reinforcing cloth.

Claims (5)

A protective material comprising an inside and an outside,
a first resin layer;
a second resin layer;
a first reinforcing cloth;
Equipped with
The first resin layer is disposed on the outermost side,
The second resin layer and the first reinforcing cloth are arranged inside the first resin layer,
The first resin layer has an infrared reflective agent mixed therein.
Protective material. The second resin layer is arranged inside the first resin layer,
the first reinforcing cloth is disposed inside the second resin layer;
Protective material according to claim 1. a second reinforcing cloth is further disposed between the first resin layer and the second resin layer;
Protective material according to claim 2. The first resin layer is chlorinated polyethylene,
the infrared reflector is a metal oxide,
Protective material according to claim 1. Protective clothing using the protective material according to any one of claims 1 to 4.

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