JP2001032121A - Material for protecting clothing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject material for protecting the body from a thrust by a material with a sharp tip such as ice pick, nail, etc., an incised wound by a climbing knife, etc., having a compressibility in a specific range in application of specific pressure load to the material for protecting clothing in a thickness direction. SOLUTION: This material for protecting clothing has a compressibility in a range of 10-30% when a pressure load of 20 kPa is applied in its thickness direction to a protecting material having a thickness of preferably at most 30 mm in which hard inorganic particles are stuck to at least one side of a sheetlike material (the compressibility has a distribution showing the maximum at the residual part except one side of the sheetlike material to which hard inorganic particles are stuck preferably in the thickness direction of the material of the protecting clothing).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective garment material for protecting a body or the like from piercing and cutting.
More specifically, sharp objects such as ice picks or nails, objects with blades such as climbing knives, knife blades or Japanese swords, or sharp objects such as glass plates, broken glass pieces, or iron plates immediately after cutting The present invention relates to a protective clothing material for protecting a body or the like from an object or the like.

[0002]

2. Description of the Related Art Conventionally, materials for protective clothing used for protective clothing for protecting the body from objects such as ice picks and mountain climbing knives include those using a hard flat plate to enhance protective properties, Those using a fabric made of high-strength fiber have been proposed.

[0003] As a material for protective clothing using a hard flat plate, a steel plate, a titanium plate, a stainless steel plate, a ceramic plate, a polycarbonate resin plate or the like are joined together, or a polycarbonate resin is densely combined as a small resin piece. Or a metal plate or a resin plate coated with a cloth. These are very heavy due to their large specific gravity if they are made thick enough to obtain sufficient protective performance, and they have no flexibility at all, so they are insufficiently flexible for clothing. There was a problem that only one of them could be obtained.

On the other hand, a protective clothing material using a fabric made of a high-strength fiber has a higher quality than a material using a hard flat plate.
It is lightweight and flexible, and has higher protection than a fabric made of ordinary fibers. However, a cloth consisting of the high-strength fiber alone could not provide sufficient protective performance that can withstand practical use with a thickness that is practically acceptable. Therefore, in order to enhance the protection of the fabric, at the expense of lightweight and flexibility, which are the advantages of the fabric, a combination of the hard material, metal working, or a thermoplastic or thermosetting resin is added to the fabric. Had to impregnate or coat.

[0005] As described above, in conventional protective clothing materials, there is a trade-off relationship between protection properties, lightness and flexibility, and it has long been desired to provide a protective clothing material having both of them. Was.

[0006] In response to this desire, a material for protective clothing in which high-hardness ceramic particles are fixed in close proximity to an inner layer or an outer layer of a laminated body of a plurality of high-strength fibers is disclosed in Japanese Patent Publication No. 4-1277. It is disclosed in the gazette. According to the publication, the high-hardness ceramic particles dramatically increase the protection, so that the number of laminated fabrics can be reduced, and a protective clothing material having both protection and light weight and flexibility is provided. It is obtained.

[0007] However, the material for protective clothing according to the publication has practically useful protection against "cuts" when a blade or the like slides on its surface, but is sharply pierced with a knife or an ice pick. Although the "piercing" in this case is improved by the high hardness ceramic particles, a satisfactory protective property for use in clothing has not yet been achieved.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to solve the problem that the protective clothing material to which the hard inorganic particles are fixed has low protection against "piercing". Another object of the present invention is to solve the above problems,
Another object of the present invention is to improve the lightness and flexibility of the protective clothing material.

[0009]

In the above-mentioned publication, puncture energy is absorbed by destruction of hard inorganic particles,
How to prevent the destruction of the hard inorganic particles, while improving the protective properties of the protective clothing material, but in an ideal state to prevent the destruction of the hard inorganic particles, which is completely different from the above, how to prevent the destruction of the hard inorganic particles Was studied diligently. As a result, in the protective garment material to which the hard inorganic particles are fixed, it has been found that the compression characteristics of the protective garment material in the initial stage against stabs have a remarkable influence on the destruction of the hard inorganic particles. The invention has been reached.

Thus, according to the present invention, in a protective clothing material in which hard inorganic particles are fixed to at least one side surface of a sheet-like material, the protective clothing material has a thickness of 20 k in the thickness direction of the protective clothing material.
A protective garment material having improved blade piercing resistance, characterized in that the compression ratio when a pressure load of Pa is applied is in the range of 10 to 30%.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The protective clothing material of the present invention has a compression ratio when a pressure load of 20 kPa is applied in the thickness direction (hereinafter, a "compression ratio when a pressure load of 20 kPa is applied in the thickness direction"). May be simply referred to as “compression ratio”) within the range of 10 to 30%, preferably 12 to 25%, whereby the hard inorganic particles fixed to at least one side surface of the sheet material The greatest feature is that the protection performance of the wing is maximized. The compression ratio is 10
%, The deformation (compression) in the piercing direction when piercing with a blade or the like is small, that is, the energy of the piercing is not absorbed by the material for protective clothing, and the hard inorganic particles that come into contact with the tip of the blade etc. concentrate. As a result, the particles are broken, and accordingly, the sheet-like material to which the particles are fixed is also broken.

On the other hand, the upper limit of the compression ratio is at most 3
If it exceeds 0%, as in the case of the above-mentioned lower limit of the compression ratio, sufficient protection against piercing that can withstand practical use cannot be obtained. In this regard, it is expected that the greater the compression ratio, the more the energy of piercing will be absorbed by the material for protective clothing, but when it is used for clothing, its thickness is naturally limited, and in the limited thickness range. If the compression ratio is higher than 30%, the deformation (compression) in the piercing direction when piercing with a knife is large, but the energy that the protective clothing material itself can absorb is reduced. In other words, even after the protective clothing material is deformed and becomes substantially hard, most of the piercing energy is not absorbed, and the remaining piercing energy is concentrated on the hard inorganic particles that come into contact with the tip of a blade or the like, Again, it destroys the particles. In addition, when the compression ratio is high as described above, the thickness of the protective clothing material after deformation is extremely thin, so that the sheet-like material itself is likely to be broken.

The compression ratio may be uniform throughout the protective clothing material, but in the thickness direction of the protective clothing material, the remainder other than one side of the sheet-like material to which the hard inorganic particles are fixed is fixed. Those exhibiting a distribution that takes the maximum value in a portion are preferable. With such a distribution, the deformation of the protective clothing material when piercing a blade or the like spreads on a plane perpendicular to the piercing direction, and as a result, the amount of piercing energy that the protective clothing material can absorb is increased. . In other words, when the compressibility takes the maximum value in the surface layer on one side to which the hard inorganic particles are fixed, the deformation of the protective clothing material when piercing a blade or the like is concentrated near the pierced portion. As a result, the amount of piercing energy that can be absorbed by the protective clothing material is reduced, and the protective performance is reduced.

Such a protective clothing material has a basis weight of at least 200 g / m 2 in order to secure sufficient protective properties.
³ or those having a thickness of at least 2 mm are preferred.
On the other hand, the upper limit is preferably 5000 g / m ³ at most or 20 mm in thickness from the viewpoint of comfort such as lightness and flexibility when used for clothing.

The sheet-like material constituting the protective clothing material of the present invention will be described below. The sheet-like material employed in the present invention may be a single sheet-like material or a laminated body formed by laminating a plurality of sheets, as long as it satisfies the compressibility of the protective clothing material described above. It may be a structure (a woven fabric, a knitted fabric, a nonwoven fabric, or the like), a thermoplastic resin foam, a gel, or a composite thereof. In addition,
The fiber structure in the present invention is, for example, a single fiber is 0.5
~ 5 denier continuous filament yarn or spun yarn (30 ~ 1
Plain woven, twill woven, cut length in the range of 50 mm)
Warp knit or flat knit, etc., or single fiber is 0.5 to
5 denier continuous filament or cut length 30 to
A nonwoven fabric made of a 150 mm short fiber by a needle punch method or a water needle method can be suitably employed.

When a single sheet made of a fibrous structure is used as the sheet, a nonwoven fabric that can easily achieve a relatively high compression ratio is preferable. To add to this, in a woven fabric or a knitted fabric, it is difficult to achieve a high compression ratio of 10% or more when the above-mentioned material for protective clothing is used unless a special bulky structure such as a double structure is used. In the plain fabric mentioned in the above-mentioned publication, at most 7-8%
The compression ratio was only about the same level, and the material for protective clothing having the above-mentioned compression ratio of 10% or more could not be obtained.

When a non-woven fabric is employed as a single sheet as described above, the high strength fiber having a tensile strength of 20 g / denier or more is used to improve the protection of the non-woven fabric against piercing. Preferably, it contains at least 50 wt% based on the weight of the product.

The high-strength fiber referred to in the present invention is a fiber having a high tensile strength of 20 g / denier or more, and practically, the tensile strength is in the range of 20 to 30 g / denier. used. Such fibers include, for example, aramid fibers, polybenzyl oxide (PBO) fibers, high-density polyethylene fibers, and polyimidazole fibers, among which aramid fibers are preferred. Examples of the aramid fiber include fibers made of wholly aromatic polyamides such as aromatic dicarboxylic acids / aromatic diamines and aromatic aminocarboxylic acids, and fibers made of a copolymer obtained by copolymerizing the third component with these. .

When a non-woven fabric is used as a single sheet-like material, for example, in a process of entanglement of fibers such as a needle punch, conditions for forming entangled spots in the thickness direction of the non-woven fabric, By impregnating or applying a resin or the like to one side surface of the nonwoven fabric and scattering the resin in the thickness direction of the nonwoven fabric, a nonwoven fabric having the above-described distribution of the compressibility can be obtained.

Next, when a laminated body composed of a plurality of sheets is adopted as the sheet-like material, compared with the single sheet-like material described above, since a plurality of thin sheets are laminated, the same thickness is more flexible. There are the following advantages: the distribution of the compressibility in the thickness direction of the material for protective clothing can be arbitrarily set; and the material having a large thickness can be manufactured relatively easily. In particular, from the viewpoint of imparting flexibility by lamination,
The weight per sheet to be stacked is 1200 at most.
g / m ² , particularly preferably 700 g / m ² or less, and the lower limit is at most 200 g / m ² .

Preferably, at least one sheet is the sheet (A) to which the hard inorganic particles are fixed, and at least one sheet other than the sheet (A) is the sheet (A).
The sheet (B) has a higher compression ratio when a pressure load of 20 kPa is applied in the thickness direction than that of the sheet (B), and the sheets (A) and (B) have the following a and ba. The sheet (A) has a compressibility in the range of 3 to 25% when a pressure load of 20 kPa is applied in the thickness direction thereof; and b. Sheet (B) is a laminate including two sheets that satisfies that the compression ratio when a pressure load of 20 kPa is applied in the thickness direction is in the range of 20 to 60%.

Of course, the sheet (A) or (B) itself may be a laminate. For example, when the sheet (A) is formed into a laminate, the layer to which the hard inorganic particles are fixed becomes a multilayer. From this, it can be said that it has a very high protection property as compared with the single-layered one, which is a very preferable embodiment. When the sheet (A) is formed into a laminate as described above, the thickness per sheet to be laminated is at most 2 mm, particularly 0.1 to 1.
The thickness of 8 mm is preferable for forming a hard inorganic particle layer in multiple layers.

In such a sheet-like material, a sheet (A) having a low compressibility, to which the hard inorganic particles are fixed, is arranged on the side where piercing is performed more than the sheet (B).
When piercing with a blade or the like, the deformation of the protective clothing material due to the piercing is spread by the sheet (A) in a plane perpendicular to the piercing direction, and the amount of energy that can be absorbed by the next sheet (B) is increased. , Expresses a high degree of protection. Therefore, the compression ratio of the sheet (A) is
Since the deformation of the protective garment material due to piercing spreads in a plane perpendicular to the piercing direction, it is preferably at most 25%, while the lower limit is at least 3%.
It is. Particularly preferred compression ratio of the sheet (A) is 5 to 1
The range is 5%.

The sheet (B) preferably has a higher compression ratio and is at least 20% than the above-mentioned sheet (A) so as to easily absorb piercing energy, and the upper limit is at most 60%. % Is preferable for the same reason as the upper limit of the overall compressibility of the protective clothing material described above.

As the sheet (A), in order to spread the deformation of the protective clothing material due to piercing in a plane perpendicular to the piercing direction, the compression ratio is small, the elongation when pulled is small, and the rupture due to pulling is small. It is required to be difficult to fabricate, and a fibrous structure (fabric) such as a woven fabric, a warp knitted fabric inserted with a weft, or a high-density nonwoven fabric is preferable. Among them, a fabric containing at least 50 wt% of high-strength fibers having a tensile strength of 20 g / denier or more as a constituent fiber, based on the weight of the sheet (A), is preferable. Particularly preferred is a woven fabric which has a lower compression ratio, a smaller elongation when pulled, and is less likely to be broken by pulling than a nonwoven fabric or a knitted fabric. The basis weight of the sheet (A) is preferably in the range of 100 to 3000 g / m ^{2 in} order to maintain sufficient protection and flexibility.
It is preferably in the range of 0.2 to 8 mm.

The sheet (B) is not so required to be stretched or broken as in the case (A), and is mainly required to have a high compression ratio. Therefore, a nonwoven fabric, a thermoplastic resin foam or a gel-like material having a relatively high compression ratio is preferable.

Preferably, the nonwoven fabric itself has a high protection property.
It is a nonwoven fabric containing at least 50 wt% of the above-mentioned high-strength fiber having a tensile strength of 20 g / denier or more based on the weight of the sheet (A), or a foam of a thermoplastic resin which is very easy to mold. The sheet (B) has a basis weight of 100 to 3000 because it maintains sufficient protection and flexibility similarly to the sheet (A) described above.
preferably has a range of g / m ^2, The thickness for the same reason preferably in a range of 0.4～12Mm.

Regarding the ratio of the sheet (A) or (B) in the protective clothing material and the ratio of both, the sheet (A)
If the amount is too small, the expansion of the deformation to the plane perpendicular to the piercing direction does not proceed sufficiently, and if the number of sheets (A) is too large, the effect of the sheet (B) absorbing piercing energy is not sufficiently exhibited. Therefore, the balance between the two is important. Specifically, the ratio of the sheet (A) in the protective clothing material is 30 based on the thickness of the protective clothing material.
８０80%, based on the thickness of the protective clothing material, the proportion of the sheet (B) in the protective clothing material is 20 to 70%.
%, And the ratio of the thickness of the sheet (B) to the thickness of the sheet (A) is preferably 1: 6 to 4: 1.

The laminate including the sheet (A) and the sheet (B) has been described above. However, a laminate other than the sheet (A) and the sheet (B) may be used as long as the compressibility of the protective clothing material as a whole is not impaired. Other sheets may be laminated. Of course, materials that enhance breathability or moisture absorption,
Alternatively, it may be a composite of various materials that enhance safety, such as a light-emitting sheet or a luminous reflection sheet.

The hard inorganic particles used in the protective clothing material of the present invention are described below. The hard inorganic particles referred to in the present invention are particles having a Knoop hardness of 30 kgf / mm ² or more, and include, for example, particles mainly composed of diamond, alumina, garnet or silicon carbide. Preferably, the Knoop hardness is 500 kgf / mm ²
More preferably, the Knoop hardness is 1000 kgf / m
m ² or more particles. If it is smaller than 500 kgf / mm ² , the hard inorganic particles themselves may be easily broken depending on the material of the piercing blades. The size (particle size) of the hard inorganic particles is preferably 50 μm or more, and more preferably 1 μm or more.
More preferably, it is not less than 00 μm. The particle size is 50
If it is smaller than μm, the hard inorganic particles can be slightly moved even if they are fixed, so the size of the hard inorganic particles is often smaller than the moving distance,
Energy absorption due to contact of the piercing blades and damage to the piercing blades are likely to be reduced. Further, the coverage of the fabric surface with the hard inorganic particles is 30 to
It is preferably in the range of 95%, more preferably 50 to 80%.
% Is more preferable. The covering rate is 30
%, It becomes difficult for the hard inorganic particles and the blade to come into contact with each other when the blade is pierced. On the other hand, if it exceeds 95%, it is difficult to maintain the flexibility of the material for protective clothing.

Such hard inorganic particles are fixed to one side of the sheet-like material. The method is to apply an adhesive such as epoxy resin, phenol resin, acrylic resin or urethane resin to the fabric, Then, after hard inorganic particles are sprayed or sprayed on the surface to which the adhesive is applied or sucked by electrostatic induction, the above-mentioned adhesive may be solidified by, for example, heat. When the sheet-like material is a cloth, if necessary, a sealing process may be performed before applying the adhesive to prevent the adhesive from slipping through.

[0032]

EXAMPLES The present invention will be described below in detail with reference to examples, but the present invention is not limited to the description. In addition, the manufacturing method and the evaluation method of the test piece used in the Example are as follows.

(1) Preparation of protective performance measurement sample <Sheet A> A woven fabric (360 g) made of spun yarn composed of para-aramid fiber (Tecjin, Technora)
/ M ² , thickness 0.9 mm) with a doctor knife to coat a urethane solution (Dainippon Ink Co., Ltd., solvent-based urethane “Chrisbon AD-865HV”), adhere a hard inorganic material, and at 120 ° C. The solvent was removed by placing in a dryer for 15 minutes. This was cut into a size suitable for measurement, and five sheets were laminated. At this time, sample numbers 1 to 11 were prepared by variously changing the urethane coating amount (weight fraction based on the weight of the solid content of the fabric) and the material, shape, and coverage of the hard inorganic particles. Table 1 shows the results.

[0034]

[Table 1]

<Sheet B> Sample numbers 2-1, 2-6 and 2-7 para-aramid fibers (Tecjin Corporation, Technora,
A nonwoven fabric was prepared by a needle punch method using a fiber length of 38 mm and a fineness of 3.0 denier.

Sample No. 2-2 A sample was prepared in the same manner as in Sample No. 2-1, except that the fineness of the para-aramid fiber was changed to 1.0 denier.

Sample No. 2-3 A sample was prepared in the same manner as in Sample No. 2-1, except that the fineness of the para-aramid fiber was changed to 1.5 denier.

Sample No. 2-4 Sample No. 2-1 contains an aqueous urethane resin emulsion (“Superflex E-20” manufactured by Daiichi Kogyo Seiyaku Co., Ltd.).
00 ") was immersed, squeezed, and dried (heat treated) such that the solid content weight ratio of the urethane resin was 8% with respect to the weight of the fabric of sample number 2-1.

Sample No. 2-5 The same operation was repeated except that the weight ratio of the solid content of Sample No. 2-4 was changed to 16%.

Sample number 2-8 Three sample numbers 2-1 were laminated.

Sample number 2-9 Four sample numbers 2-1 were laminated.

Sample No. 2-10 The same procedure was repeated except that the para-aramid fiber of sample number 2-1 was changed to polyethylene terephthalate fiber (intrinsic viscosity: 0.64, strength: 4 g / de, elongation: 20%). The operation was repeated.

Sample No. 2-11 A sheet-like gel ("Segel", "α-gel") was used.

Sample No. 2-12 Para-aramid fiber (Teijin, Technora)
A woven fabric (360 g / m ² , thickness 0.9 mm) made of spun yarn consisting of five layers was used.

As described above, the sample numbers 2-1 to 2-12
Table 2 shows the results.

[0046]

[Table 2]

(2) Method of Measuring Bending Strength The hardness was measured by the Gurley method according to JIS L1096. The obtained measurement value is converted to a thickness of about 1 mm,
It was assumed to be soft and soft.

(3) Method of Measuring Thickness The sample contact surface of the compressor (made of iron) is a circle having a diameter of 1 cm, and the sample is placed on a 10 mm-thick iron plate at a speed of 2 mm / min in a free state. It was lowered from above and the thickness was measured when the pressure load was 2 kPa. In this test, a tensile compression tester type 2005 manufactured by Intesco Corporation was used.

(4) Method of Measuring Compressibility The measurement was performed with the thickness of the measurement sample set to 3 mm or more and 30 mm or less. Compressor (iron) sample contact surface is 1cm in diameter
The sample is placed on a 10 mm-thick iron plate in a free state at a speed of 2 mm / min. The sample is dropped from above, and the displacement when the pressure load changes from 2 kPa to an increase is set to 0, and the pressure load is set to 0. The compression ratio was calculated from the displacement at 20 KPa (kilopascal). In this test, a tensile compression tester type 2005 manufactured by Intesco Corporation was used.

(5) Method of Evaluating Protective Performance A sample fabric is placed on the top surface of a sufficient amount of a clay layer (20 × 20 × 10 cm (length × width × height), flat work surface oil clay). A knife is attached to the end of a weight that is dropped to a fixed position by two vertically-fixed guide pillars (Masahiro Inc. "Special extra knife 180mm").
Firmly so that the cutting edge faces downward. At this time, the weight of the weight is adjusted so that the total weight of the weight and the knife is 2.55 kg. The knife is freely dropped together with the weight so that the distance between the upper surface of the sample and the knife edge of the knife is 100 cm. The protective performance is measured by measuring the length (L) of the blade edge of the knife blade protruding from the back of the sample and the depth (D) of the recessed clay (unit: mm). Judge as high (three-level evaluation of ○, △, ×). However, when L is a value of 5 mm or more, the protective performance is determined to be low (judgment ×), no matter how small D is. L
Is smaller than 5 mm and 10 mm depending on the value of D.
If less than （(pass), 10 mm to 20 mm is judged as Δ (pass), and if more than 20 mm, × (fail) is judged. In addition, the blade knife was replaced every test.

[Examples 1 to 18 and Comparative Examples 1 to 6] Sample numbers 1-1 to 1-11 (sheet (A))
Sample numbers 2-1 to 2-12 (sheet (B)) were laminated as shown in Table 1, and a blade was pierced from the side of sheet (A) to perform a blade resistance test. Table 3 shows the results.

[0052]

[Table 3]

Consider Table 3. Examples 1 to 18 in which the overall compressibility of the protective clothing material is within the scope of the present invention.
Had good protection performance. However, in Examples 6 and 7, since the sheet B was thick, the flexibility was slightly lacking.

The overall compressibility of the protective clothing material is as follows:
Comparative Example 1 is too large and Comparative Example 2 is too small,
The protection performance was low.

Of particular note is the relationship between the basis weight and the protective performance in Examples 1, 3 and Comparative Example 2. That is, the thickness is almost the same, and the basis weight is Example 1 <Example 3 <
Although the protection performance obtained is larger than that of the comparative example 2, the protection performance obtained in the example 1 is the best. From these results, it is easily understood that, according to the present invention, a lighter protective clothing material can be provided with a high degree of protective performance.

[0056]

The protective clothing material of the present invention has a compression ratio of 10 when a pressure load of 20 KPa is applied in the thickness direction.
Because it is in the range of ~ 30%, when piercing with a knife etc.,
When the blade and the hard inorganic material particles fixed to one side of the side to be pierced come into contact with each other, it is possible to suppress concentration of piercing energy on the particles. In other words, conventionally, the puncture energy was absorbed by the destruction of the particles, whereas the protective garment material itself absorbed the pierce energy by its own deformation (compression). Destruction can be suppressed, and as a result, a high degree of protection is achieved. Further, as described above, since the protective clothing material itself can absorb the piercing energy, the impact transmitted to the wearer is reduced.

Moreover, the protective clothing material of the present invention has higher protection than conventional low compression ratio materials under the same basis weight.
It is possible to obtain a lighter and softer protective garment material with a smaller weight per unit area.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) A41D 31/02 A41D 31/02 A B32B 5/16 B32B 5/16 F41H 1/02 F41H 1/02 F term (Reference) 4F100 AA01B AA19 AK01C AK47 AK51G AR00A AR00C AT00A BA02 BA03 BA06 BA07 BA10B BA10C BA13 CB01 DE01B DG11A DG12 DG15C DJ01C GB72 JK02A JK08 JK08A JK08C JK11 JK03 YY00 YL00

Claims (9)

[Claims] 1. A protective clothing material in which hard inorganic particles are fixed to at least one side surface of a sheet-like material, wherein a compression ratio of 10 to 10 when a pressure load of 20 kPa is applied in a thickness direction of the protective clothing material. A material for protective clothing characterized by being in the range of 30%. 2. A distribution in which the compression ratio has a maximum value in the thickness direction of the protective clothing material in the remaining portion other than one side of the sheet-like material to which the hard inorganic particles are fixed. Protective clothing material as described. 3. The protective clothing material has a thickness of at most 30 m.
3. The material for protective clothing according to claim 1, wherein m is m. 4. The sheet-like material is a laminate comprising a plurality of sheets, wherein at least one sheet is a sheet (A) to which hard inorganic particles are fixed, and at least one sheet other than the sheet (A) Is a sheet (B) having a higher compressibility when a pressure load of 20 kPa is applied in the thickness direction than the sheet (A), and the sheets (A) and (B) simultaneously have the following a and b: Item 4. The material for protective clothing according to any one of Items 1 to 3. a. The sheet (A) has a compressibility in the range of 3 to 25% when a pressure load of 20 kPa is applied in the thickness direction thereof; and b. The compression ratio when the sheet (B) is subjected to a pressure load of 20 kPa in its thickness direction is in the range of 20 to 60%. 5. The sheet (A) comprises a high-strength fiber having a tensile strength of 20 g / denier or more.
The material for protective clothing according to claim 4, which is a fabric containing at least 50 wt% based on the weight of the protective clothing. 6. The material for protective clothing according to claim 4, wherein said sheet (B) is a non-woven fabric. 7. The material for protective clothing according to claim 4, wherein the sheet (B) is a foam of a synthetic resin. 8. The ratio of the thickness of the sheet (B) to the thickness of the sheet (A) in the protective clothing material is 1: 6 to 4: 1.
The protective clothing material according to any one of claims 4 to 7, wherein 9. The material for protective clothing according to claim 1, wherein the material of the hard inorganic particles has a Knoop hardness of at least 500 kgf / mm ² or more.