JP5547812B2 - Penetration-resistant fabric and products containing the fabric - Google Patents

Description

The present invention relates to a penetration-resistant fabric and a product containing the fabric .

Penetration resistant fabrics , i.e., fabrics for protecting against firearms, blades, and blasted material attacks are well known. In case of an attack with a firearm, bullet-shaped or debris-shaped ammunition may be used. Therefore, the penetration-resistant fabric must have at least a bulletproof and debrisproof effect. Moreover, in the attack by an explosive, the anti-breaking piece bullet effect becomes indispensable for the penetration-resistant fabric used. Therefore, for many years, there has been a demand for a penetration-resistant fabric having the functions of bulletproof and shredding-proof bullets, and recently, there has been an increasing demand for fabrics that have improved anti-smashing and bullet-proof effects at the same time. .

Accordingly, an object of the present invention is to provide a penetration-resistant fabric having improved anti-fracture fragment bullet effect while maintaining anti-elasticity.

The above-mentioned problem is a penetration-resistant fabric (I) containing at least one kind of untwisted high-performance fiber whose breaking strength measured without twisting based on ASTM D-885 is at least 1100 MPa, The high-performance fiber is a bulky high-performance fiber, and the degree of bulkiness is determined based on DIN 53895 (October 1997) in the fabric (I) containing the bulky high-performance fiber. .5N / cm ² at an initial thickness of, and the relative amount of compression being determined by measuring the final thickness at a pressure 5N / cm ² is, penetration resistant fabrics only in that a high-performance fibers has no bulkiness This is achieved by the penetration resistant fabric (I), characterized in that it is larger by the value of the factor f having a range of 1.2-5 than the relative compressibility of the comparative fabric produced by a production different from the production of (I).

"Only in that no high-performance fibers bulkiness, manufacture and different penetration resistant fabrics of the present invention (I)" above and in the production of "comparative fabric, penetration resistant fabrics of the present invention ( In the present invention, it means that the same starting materials as in the production of I), that is, for example, polymers having the same molecular weight are spun by the same spinning method into the same high-performance fiber. However, the high performance fiber used in the manufacture of penetration resistant fabric to be compared fabric, without imparting bulkiness compared fabric in the same manner as in the preparation of penetration resistant fabrics of the present invention (I) To be processed.

Surprisingly, the penetration-resistant fabric (I) of the present invention exhibits a remarkable anti-breaking piece bullet effect while maintaining the anti-elasticity.

Surprisingly, the bulky high-performance fiber that is indispensable for the invention of the penetration-resistant fabric (I) of the present invention has a decrease in fiber breaking strength of, for example, 20% and a breaking elongation of, for example, 11%. There is a correlation between the significant deterioration of the mechanical properties of the fibers that form. In view of such a significant deterioration in fiber properties, those skilled in the art must predict that fabrics containing such fibers will also have significantly reduced bullet and flake resistance properties as well. Those of ordinary skill in the art would be surprised if the degradation of the bullet and flare bullet properties of the fabric containing such fibers is slight. Accordingly, those skilled in the art not only have a slight decrease in the bulletproof property and the fragmentary bullet resistance of the fabric containing such fibers, but also maintain the high bulletproof property, and in addition, the bulletproof fragment bullet characteristics are significantly improved. It must be surprising to the fact that.

Furthermore, surprisingly, the penetration-resistant fabric (I) of the present invention is also conspicuous in terms of improving the blade-proof effect. This is still surprising considering that the mechanical properties of the high-performance fiber are significantly deteriorated as described above with increasing bulk.

In a preferred embodiment, the penetration resistant fabric (I) has a breaking strength measured according to ASTM D-885 without twisting of at least 1700 MPa (120 cN / tex), preferably 2160 MPa (150 cN / tex). Contains some highly functional fibers.

In another preferred embodiment of the penetration-resistant fabric (I), the high-performance fibers are aramid fibers, polybenzoxazole fibers, polybenzothiazole fibers, and thermoplastic fibers such as liquid crystal polyester fibers, or of these Selected from the group consisting of a mixture of at least two fibers. In the present invention, this means that the high-performance fibers are composed of, for example, only aramid fibers, only polybenzoxazole fibers, only polybenzothiazole fibers, or only thermoplastic fibers such as liquid crystal polyester fibers. . Furthermore, in the present invention, the high-performance fiber is formed from a mixture of “aramid fiber” and “polybenzoxazole fiber and / or polybenzothiazole fiber and / or thermoplastic fiber such as liquid crystal polyester fiber”, for example. It means getting.

  The aramid fiber referred to in the present invention is a fiber produced from aramid, that is, an aromatic polyamide, and at least 85% of amide (—CO—NH—) bonds are directly bonded to two aromatic rings. Means. A particularly preferred aromatic polyamide in the present invention is poly p-phenylene terephthalamide. This poly p-phenylene terephthalic acid amide is a homopolymer produced as a result of polymerization reaction of p-phenylenediamine and terephthalic acid dichloride at a molar ratio of 1: 1. Furthermore, in the present invention, an aromatic copolymer in which part or all of p-phenylenediamine and / or terephthalic acid dichloride is substituted with another aromatic diamine and / or dicarboxylic acid chloride can also be suitably used.

  The term “polybenzoxazole fiber” and “polybenzothiazole fiber” as used in the present invention means a fiber produced from polybenzoxazole or polybenzothiazole, that is, as shown below, an aromatic group bonded to nitrogen is preferable. Is a fiber made from a polymer having carbocyclic structural units. However, the above group may be a heterocycle. Furthermore, the aromatic group bonded to nitrogen is preferably a 6-membered ring as shown in the following structural formula. However, the above groups may be condensed or non-condensed polycyclic systems.

In a preferred embodiment, the fiber constituting the penetration-resistant fabric (I) of the present invention has a single yarn fineness of 0.4 to 3.0 dtex, particularly preferably 0.7 to 1.5 dtex, more preferably 0.00. It is a high-performance fiber in the range of 8 to 1.2 dtex.

In another preferred embodiment, the penetration-resistant fabric (I) of the present invention is a high-performance fiber having a total fineness of 100 to 6000 dtex, particularly preferably 210 to 3360 dtex, and more preferably 550 to 1680 dtex.

The penetration-resistant fabric (I) of the present invention is preferably a woven fabric, warp knitted fabric, weft knitted fabric or a uniaxial or multiaxial structure.
Further, the penetration-resistant fabric (I) of the present invention may be a double laminate of woven fabric. The structure of such a woven double laminate is described in detail in International Patent No. 02/075238.

When the penetration-resistant fabric (I) of the present invention is a woven fabric, the woven fabric is preferably a plain weave, a twill weave, a satin weave, a fabric derived therefrom, or a combination thereof. The penetration resistant fabric (I) of the present invention can be produced from bulky high-performance fibers using, for example, a rod rapier loom, a band rapier loom, a projectile loom, an air jet loom, a water jet loom, or the like.

When the penetration-resistant fabric (I) of the present invention is a knitted fabric, the knitted fabric preferably runs the fibers of the present invention parallel to each other in at least one direction, and preferably the proportion of weight and volume in the knitted fabric It can be formed by stitch forming stitches using at least one kind of yarn so as to be low.

When the penetration-resistant fabric (I) of the present invention is a multiaxial structure, the multiaxial structure is preferably composed of 2 to 6 layers composed of high-functional fibers running in parallel as described above. It consists of a laminate, particularly preferably a laminate of two layers, and the high-performance fibers constituting one layer take an angle α with respect to the high-performance fibers constituting adjacent layers. The angle α is preferably in the range from 0 ° to 90 °, particularly preferably from 20 ° to 70 °, with the value α = 45 ° being particularly preferred. Furthermore, the laminate comprising at least two layers composed of high-functional fibers running in parallel as described above preferably uses at least one kind of yarn so that the ratio of weight and volume in the multiaxial structure is low. Are connected to each other by stitch formation or stitch formation.

The penetration-resistant fabric (I) of the present invention includes the above-described high-performance fiber, and the high-performance fiber is a bulky high-performance fiber. The bulkiness of the high-performance fiber was basically measured on the basis of the above-mentioned DIN53885 (October 1997) for the penetration-resistant fabric (I) of the present invention containing a bulky high-performance fiber. The relative compression rate is in the range of 1.2 to 5 than the relative compression rate of the comparative fabric which is different from the production of the penetration-resistant fabric (I) of the present invention only in that the high-performance fiber does not have bulkiness. As long as the value of the factor f is increased, any method may be used for imparting bulkiness.

As a method for increasing the bulk, for example, there is a contraction method. Therefore, as a preferable embodiment of the penetration-resistant fabric (I) of the present invention, the bulky highly functional fiber is preferably an aramid fiber, a polybenzoxazole fiber, a polybenzothiazole fiber, a liquid crystal polyester fiber, or these Among them, a high-performance fiber that is a mixture of at least two kinds of fibers and a shrinkable fiber such as polyacrylonitrile fiber are contained. In order to produce such fibers, highly functional fibers and shrinkable fibers such as drawn polyacrylonitrile fibers are mixed to produce mixed fibers, and shrinkage is performed on the mixed fibers. As a result, the high-performance fiber itself does not shrink, but the bulk increases when the shrinkable fiber shrinks. As a result, the desired high-volume fiber can be obtained.

  In addition, examples of a preferable method for increasing the bulk include a method of performing texture processing on the high-performance fiber to be used, such as false twisting and knit deknitting, and particularly preferable is knit deknitting. is there. In this case, the knit knitting process means that the high-performance fiber to be used is supplied to a circular knitting machine having a diameter of, for example, 1 to 50 inches, preferably 5 to 20 gauge, and the temperature of the resulting cylindrical knitted fabric is 100 ° C. This is a process of unraveling the knitted fabric again after performing the treatment twice for 10 to 60 minutes with high-temperature steam, for example, in an autoclave. As a result, the knitted and knitted yarn has a wave-like structure, and even if the high-performance fiber is an aramid fiber, it has a wave-like structure. Aramid fibers are a surprising fact to those skilled in the art, since those skilled in the art have previously considered it impossible to texture aramid fibers.

The penetration-resistant fabric (I) of the present invention has a relative compression ratio of the comparative fabric measured by the factor f having a relative compressibility measured in accordance with the above DIN 53858 (October 1997) in the range of 1.2 to 5. Greater than rate. The production of comparison fabric is different from the production of penetration resistant fabric (I) only in that no bulkiness and high-performance fiber of the comparative fabric. If the value of the factor f is within the above range, the penetration-resistant fabric (I) of the present invention surprisingly improves the anti-fracture bullet effect while maintaining the anti-ballistic effect. Showing improvement. When the value of the factor f is smaller than 1.2, the above combination of characteristics is not observed. On the other hand, when the value of the factor f is larger than 5, the degree of orientation in the fiber axis direction is low, so that the energy dispersion required for bulletproofing is remarkably reduced.

The combination of the above surprising properties of improving the anti-flame bullet effect while maintaining the anti-ballistic effect, and also improving the anti-blade effect, the value of the factor f is preferably in the range of 1.4 to 4, more preferably Is particularly noticeable when it is in the range of 1.6 to 3.0. Therefore, in a preferred embodiment of the penetration-resistant fabric (I) of the present invention, the value of the factor f is in the range of 1.4 to 4, and in a particularly preferred embodiment, it is in the range of 1.6 to 3.0. is there.

The combination of the above surprising characteristics, which is a characteristic of the penetration-resistant fabric (I) of the present invention, improves the anti-breaking piece bullet effect while maintaining the anti-ballistic effect, and also improves the anti-blade effect. This is also inherited by products containing the penetration-resistant fabric (I). Accordingly, a product (AI) containing at least one penetration-resistant fabric (I) of the present invention is simultaneously part of the present invention, and those skilled in the art who are familiar with the present invention will be able to The number of penetration-resistant fabrics (I) of the present invention required for a specific embodiment can be calculated without any problem.

In a preferred embodiment, the product (AI) of the present invention is the following product.
i) Helmets, vehicle armor, ceramic composites, or other protective structures reinforced with resin matrix, or
ii) A combination of at least two of these products, such as a proof piece mat, a proof vest, a proof piece vest, a blade proof vest, or a combination of a proof piece and a proof piece vest.

  In another preferred embodiment, the product (AI) of the present invention is a combination of bulletproof vest, shatterproof vest and blade-proof vest.

Furthermore, the problem that is the basis of the present invention shown at the beginning is a resistance to resistance containing at least one kind of untwisted high-performance fiber having a breaking strength measured at least 1100 MPa based on ASTM D-885 without twisting. This is a penetrable fabric (II), and the high-performance fiber is a bulky high-performance fiber, and the degree of bulkiness of the fabric (II) containing the bulky high-performance fiber is DIN 53895 (1997). based on October), the initial thickness at a pressure 0.5 N / cm ^2, and the relative amount of compression being determined by measuring the final thickness at a pressure 5N / cm ² is that no bulkiness This is solved by the penetration resistant fabric (II) characterized in that it is larger than the relative compressibility of the comparative fabric different from the bulky fabric only by the value of the factor f having a range of 1.2-5.

The above-mentioned “difference from the penetration-resistant fabric (II) of the present invention only in that the comparative fabric does not have bulkiness” means “in the production of the comparative fabric , the penetration-resistant fabric (II) of the present invention. The same fiber-forming material as manufactured, that is, for example, a polymer having the same molecular weight is spun by the same spinning method to produce a fiber high-performance fiber, and subsequently the same method as the penetration-resistant fabric (II) of the present invention. In the present invention, it means “to be processed into a comparative fabric ”. However, at this time, the comparative fabric does not have bulkiness.

Surprisingly, the penetration-resistant fabric (II) of the present invention also improves the anti-breaking piece bullet effect while maintaining the anti-elasticity, and in addition, the improvement of the blade-proof effect is outstanding.
Surprisingly, the bulkiness essential to the penetration-resistant fabric (II) of the present invention significantly deteriorates mechanical properties such as breaking strength. In view of such characteristic deterioration, those skilled in the art must predict that not only the blade-proof property but also the bulletproof property and the fracture-proof piece bullet property will deteriorate. Therefore, the person skilled in the art not only does not deteriorate the bulletproof property and the fracture-proof piece bullet property of the fabric (II) of the present invention, which deteriorates the mechanical properties, but also maintains the high bulletproof property, You must be amazed at the fact that it shows a significant improvement, and even an improvement in blade protection.

In a preferred embodiment, the penetration resistant fabric (II) has a breaking strength, measured according to ASTM D-885 without twisting, of at least 1700 MPa (120 cN / tex), particularly preferably 2160 MPa (150 cN / tex). It contains a highly functional fiber.

In another preferred embodiment of the penetration-resistant fabric (II) of the present invention, the high-performance fiber is a thermoplastic fiber such as an aramid fiber, a polybenzoxazole fiber, a polybenzothiazole fiber, a liquid crystal polyester fiber, or the like. It is selected from the group consisting of a mixture of at least two types of fibers. This is the same as the matters already described in the description of the penetration-resistant fabric (I).

As a preferred embodiment, the penetration resistant fabric (II) of the present invention has a single yarn fineness of 0.4 to 3.0 dtex, more preferably 0.7 to 1.5 dtex, and particularly preferably 0.8 to 1.dtex. It has a high-performance fiber in the range of 2 dtex.

As another preferred embodiment, the penetration-resistant fabric (II) of the present invention has high-functional fibers having a total fineness of 100 to 6000 dtex, more preferably 210 to 3360 dtex, and particularly preferably 550 to 1680 dtex.

The bulky penetration-resistant fabric (II) of the present invention is preferably a woven fabric, warp knitted fabric, weft knitted fabric or a uniaxial or multiaxial structure.
Further, the penetration-resistant fabric (II) of the present invention may be a double laminate of woven fabric. The structure of such a woven double laminate is described in detail in International Patent No. 02/075238.

When the bulky penetration-resistant fabric (II) of the present invention is a woven fabric, the woven fabric is preferably a plain weave, twill weave, satin weave, or one derived from these, or a combination thereof. .

When the penetration-resistant fabric (II) of the present invention is a knitted fabric, the knitted fabric preferably runs the fibers of the present invention parallel to each other in at least one direction, and preferably the proportion of weight and volume in the knitted fabric It can be formed by stitch formation and binding using at least one type of yarn so as to reduce the.

When the bulky penetration-resistant fabric (II) of the present invention is a multiaxial structure, the multiaxial structure is preferably a laminate of 2 to 6 layers composed of highly functional fibers that run in parallel as described above. Particularly preferably, it is composed of a laminate of two layers, and the high-performance fibers constituting one layer take an angle α with respect to the high-performance fibers constituting adjacent layers. The angle α is preferably in the range from 0 ° to 90 °, particularly preferably from 20 ° to 70 °, with the value α = 45 ° being particularly preferred. Furthermore, the laminate comprising at least two layers composed of high-functional fibers running in parallel as described above preferably uses at least one kind of yarn so that the ratio of weight and volume in the multiaxial structure is low. Are connected to each other by stitch formation or stitch formation.

The penetration-resistant fabric (II) of the present invention is a bulky penetration-resistant fabric . The bulkiness of the fabric is basically “only with respect to the penetration resistance fabric of the present invention, in that the relative compression ratio measured based on the above-mentioned DIN53885 (October 1997) has no bulkiness. Any method may be used for imparting bulkiness as long as it becomes larger in the value of the factor f having a range of 1.2 to 5 than the relative compressibility of the comparative fabric different from the penetration resistant fabric of the present invention. Good.

As a method suitable for increasing the bulk, for example, there is a contraction method. In this regard, as a preferred embodiment of the penetration-resistant fabric (II) of the present invention, in addition to the above-mentioned high-function fiber, a shrinkable fiber such as a stretched polyacrylonitrile fiber is contained. By shrinking such shrinkable fibers, the bulk of the penetration-resistant fabric increases, and as a result, the bulky penetration-resistant fabric (II) of the present invention is obtained.
Therefore, as a preferred embodiment of the present invention, the bulky fiber fabric (II) contains a shrinkable fiber such as a shrinkable polyacrylonitrile fiber in addition to the high-performance fiber.

The penetration resistant fabric (II) of the present invention has a relative compression ratio of the comparative fabric measured by the factor f having a relative compressibility measured in accordance with the above DIN 53858 (October 1997) in the range of 1.2 to 5. Greater than rate. The comparative fabric is different from the penetration-resistant fabric only in that the comparative fabric does not have bulkiness. If the value of the factor f is in the above range, the penetration-resistant fabric (II) of the present invention surprisingly improves the anti-fracture bullet effect while maintaining the anti-ballistic effect, and in addition, the anti-blade effect. Showing improvement. When the value of the factor f is smaller than 1.2, the above combination of characteristics is not observed. On the other hand, when the value of the factor f is larger than 5, the degree of orientation in the fiber axis direction is low, so that the energy dispersion required for bulletproofing is remarkably reduced.

The combination of the above surprising properties that the bulletproof effect is improved while maintaining the bulletproof effect, and in addition, the blade prevention effect is also improved, the value of the factor f is preferably in the range of 1.4 to 4, more preferably Is particularly noticeable when it is in the range of 1.6 to 3.0. Accordingly, in a preferred embodiment of the penetration-resistant fabric (II) of the present invention, the value of the factor f is in the range of 1.4 to 4, and in a particularly preferred embodiment, in the range of 1.6 to 3.0. is there.

The combination of the above surprising properties, which is a characteristic of the penetration-resistant fabric (II) of the present invention, improves the bulletproof effect while maintaining the bulletproof effect, and also improves the blade-proof effect. It is also inherited by products containing the penetration resistant fabric (II). Accordingly, a product (AII) containing at least one penetration-resistant fabric (II) of the present invention is simultaneously part of the present invention, and those skilled in the art who are familiar with the present invention will be able to The number of the penetration-resistant fabrics (II) of the present invention necessary for a specific embodiment can be calculated without any problem.

In a preferred embodiment, the product (AII) of the present invention is the following product.
i) Helmets, vehicle armor, ceramic composites, or other protective structures reinforced with resin matrix, or
ii) A combination of at least two of these products, such as a proof piece mat, a proof vest, a proof piece vest, a blade proof vest, or a combination of a proof piece and a proof piece vest.

  In another preferred embodiment, the product (AII) of the present invention is a combination of a bulletproof vest, a shatterproof vest and a bladeproof vest.

The invention is illustrated in detail in the following examples. In the example, the following measurement method is used.
The breaking strength and breaking elongation were measured without twisting based on ASTM D-885.
The relative compressibility of the fabric was determined by measuring the initial thickness at a pressure of 0.5 N / cm ² and the final thickness at a pressure of 5.0 N / cm ² based on DIN 53858 (October 1997).

<Example 1>
Poly p-phenylene terephthalic acid amide fiber (Twaron (registered trademark) type 2040, t0 (t0 means Twist = 0) having a breaking strength of 200 cN / tex, that is, 2880 MPa and a breaking elongation of 3%, In other words, it is a non-twisted fiber), which is available from Teijin Aramid Co.), and was subjected to the following knit denit processing. Poly p-phenylene terephthalic acid amide fiber is supplied to a circular weaving machine having a diameter of 3.5 inches and 13 gauge, and the obtained cylindrical fiber structure is heated at a temperature of 120 ° C. for 30 minutes at 2 ° C. It was solved again after the treatment of. The knit-deknitted fiber had a wave-like structure.

The poly-p-phenylene terephthalamide fiber knit processed by knit had a breaking strength of 160 cN / tex (2240 MPa) and a breaking elongation of 2.66%, which were 20% and 11% worse, respectively.
The poly p-phenylene terephthalic acid amide fiber subjected to the knitted knitting process was processed into a plain weave having a basis weight of 165 g / m ² by a bar rapier loom with the number of warp and weft fibers being 8.5 / cm.
The relative compressibility of the fabric made of the obtained poly p-phenylene terephthalic acid amide fiber was 28.3%.

16 woven fabrics made of knitted and knitted poly p-phenylene terephthalic acid amide fibers in an unprocessed state, that is, in a state where the finish is not removed by a cleaning process or the like, or in a state where water repellent processing is not performed. Stacked on the structure. The obtained structure was conditioned at a temperature of 20 ° C. and a relative humidity of 65% for 20 hours to obtain a structure having a basis weight of 2.6 kg / m ² . The conditioned structure was fired with debris based on STANAG 2920 (1.1 g debris) and the v ₅₀ value (debris), ie the rate of fire at which 50% of the total fire could be protected. The v ₅₀ value (debris) was 483 m / s (see Table 1).

<Comparative Example 1>
Poly p-phenylene terephthalic acid amide fiber having a breaking strength of 200 cN / tex, that is, 2880 MPa and a breaking elongation of 3% (Twaron (registered trademark), types 2040, 930 dtex, f1000, t0 0 (meaning non-twisted spinning), available from Teijin Aramid) was processed into a woven fabric in the same manner as in Example 1 except that it was not textured. That is, the fabric before being processed into a fabric was not subjected to knit-deniting, and was not subjected to any other treatment for increasing the bulk, so that the fabric was produced.

The relative compressibility of the woven fabric composed of poly p-phenylene terephthalamide fiber not subjected to texturing was 12.5%.
Sixteen fabrics made of poly p-phenylene terephthalic acid amide fibers that were not textured were stacked on one structure in an unprocessed state and conditioned in the same manner as in Example 1. The basis weight of the obtained structure was 2.6 kg / m ² . Further, as in Example 1, the v ₅₀ value (debris bullet) of the conditioned structure was measured. v ₅₀ values (fragments bullets) was 453m / s (see Table 1).

<Example 2>
Poly p-phenylene terephthalic acid amide fiber having a breaking strength of 200 cN / tex, that is, 2880 MPa and a breaking elongation of 3% (Twaron (registered trademark), types 2040, 930 dtex, f1000, t0 0, meaning non-twisted spinning), available from Teijin Aramid), was knitted and knitted as in Example 1.

The poly p-phenylene terephthalic acid amide fiber subjected to the knitted knitted process had a breaking strength of 160 cN / tex (2240 MPa) and a breaking elongation of 2.66%, which were 20% and 11% worse, respectively.
The poly p-phenylene terephthalic acid amide fiber subjected to knitted knitting was processed into a woven fabric in the same manner as in Example 1.
The relative compressibility of the woven fabric composed of poly-p-phenylene terephthalamide fiber subjected to knitted knitting was 28.3%.

Twenty-six fabrics made of poly-p-phenylene terephthalamide fiber that has been knitted and knitted, in an unprocessed state, that is, in a state in which the finishing agent is not removed by a cleaning process or the like, or in a state in which water-repellent processing is not performed. 1 stacked in a structure. The obtained structure was conditioned at a temperature of 20 ° C. and a relative humidity of 65% for 20 hours to obtain a structure having a basis weight of 4.25 kg / m ² . The conditioned structure was shot with a type 9 mm DM41 bullet and the v ₅₀ value (bullet) was measured. v ₅₀ value (bullets) was 473 ± 10 m / s (see Table 1).

<Comparative example 2>
Poly p-phenylene terephthalic acid amide fiber having a breaking strength of 200 cN / tex, that is, 2880 MPa and a breaking elongation of 3% (Twaron (registered trademark), types 2040, 930 dtex, f1000, t0 0 (meaning non-twisted spinning), available from Teijin Aramid) was processed into a woven fabric in the same manner as in Example 2, except that it was not textured. That is, the fabric before being processed into a fabric was not subjected to knit-deniting, and was not subjected to any other treatment for increasing the bulk, so that the fabric was produced.

The relative compressibility of the woven fabric made of poly p-phenylene terephthalamide fiber not subjected to texturing was 12.5%.
Twenty-six fabrics made of poly p-phenylene terephthalic acid amide fibers that were not textured were stacked on one structure and conditioned in the same manner as in Example 2. Further, as in Example 2, the v ₅₀ value (bullet) of the conditioned structure was measured. v ₅₀ value (bullets) was 478 ± 6 m / s (see Table 1).

  From Table 1, the woven fabric of the present invention composed of fibers subjected to knitted and knitted processing maintains a good ballistic resistance (see Example 2 and Comparative Example 2) and is composed of fibers not subjected to texturing. It is clear that the fracture-proof elasticity (see Example 1 and Comparative Example 1) is 6.6% higher than

<Example 3>
Twenty-five fabrics manufactured from poly p-phenylene terephthalic acid amide fibers that had been knit-denited in the same manner as in Example 1 were stacked in one structure in an unprocessed state. The obtained structure was conditioned in the same manner as in Example 1 to a basis weight of 4.1 kg / m ² . Using P1B knives for moisture-conditioned structures, according to “Home Office Science Development Bureau (HOSDB), Bulletproof Vest Regulations for British Police (2007), Part 3: Cutlery and Spike Protection” A blade-proof test was performed. This knife is described in detail in FIG. 2 and page 21 of Chapter 5.3, page 5.3 of the above definition.

In the test, the structure to be tested was placed on an elastic foam having a thickness of 66 mm. At this time, the foam imitated a human body and was placed on an iron plate. The structure to be tested placed on the foam was pierced with a constant kinetic energy using the P1B knife. Thereafter, the penetration depth of the knife into the foam was measured. The penetration depth into the foam simulates the depth at which the knife is inserted into the attacked body when the knife is attacked with a certain energy.
Subsequently, the kinetic energy of the knife was increased and the penetration depth of the knife into the foam was measured. The results are shown in Table 2.

<Comparative Example 3>
As in Comparative Example 1, 25 woven fabrics made from poly p-phenylene terephthalic acid amide fibers not subjected to knit deniting were stacked in one structure in an unprocessed state. The obtained structure was conditioned in the same manner as in Example 1 to a basis weight of 4.1 kg / m ² . Same as Example 3 based on “Home Office Science Development Bureau (HOSDB), Bulletproof Vest Regulations for British Police (2007), Part 3: Cutlery and Spike Protection” for humidified structures In addition, a blade-proof test was performed using a P1B knife. The results are shown in Table 2.

  As shown in Table 2, the structure of Example 3 made of the woven fabric of the present invention made of knit-denited fibers was foamed when pierced with a knife kinetic energy of 10.2 Joules. While the penetration depth of the knife into the knives was only 7 mm, the structure of Comparative Example 3 formed of fibers that had not been knit-denited was foamed when pierced with the same knife kinetic energy. The penetration depth into the body was 32 mm.

  Furthermore, as shown in Table 2, the structure of Example 3 in which the woven fabric of the present invention made of knitted and knitted fibers was laminated, when pierced with a knife kinetic energy of 36 joules, became a foam. Whereas the penetration depth of the knife was only 16 mm, the structure of Comparative Example 3 formed of fibers that had not been knit-denited was pierced with the same knife kinetic energy. The foam completely penetrated, and as a result, the knife collided with the iron plate on which the foam was placed.

Claims (8)

An untwisted high-performance fiber selected from the group consisting of aramid fiber, polybenzoxazole fiber, polybenzothiazole fiber, or a mixture of at least two of these fibers, and twisted according to ASTM D-885 A penetration-resistant fabric (I) containing at least one high-performance fiber having a measured breaking strength of at least 1100 MPa,
The high-performance fiber is a bulky high-performance fiber, and the degree of bulkiness of the fabric (I) containing the bulky high-performance fiber is based on DIN 53895 at a pressure of 0.5 N / cm ² . The relative compression ratio determined by the initial thickness and the final thickness measurement at a pressure of 5 N / cm ² is sufficient to produce the penetration-resistant fabric (I) only in that the high-performance fiber does not have bulkiness. Penetration-resistant fabric (I), characterized in that it is larger by a value of factor f having a range of 1.2 to 5 than the relative compressibility of comparative fabrics of different manufacture. The penetration-resistant fabric (I) according to claim 1, wherein the fabric is a woven fabric, a knitted fabric, or a uniaxial or multiaxial structure. The bulky high-performance fiber is a penetration-resistant fabric (I) according to claim 1 or 2, comprising a high-performance fiber and a shrinkable fiber. The penetration-resistant fabric (I) according to any one of claims 1 to 3, wherein the bulky high-performance fiber is a high-performance fiber subjected to texture processing. The penetration-resistant fabric (I) according to claim 4, wherein the high-performance fiber subjected to texture processing is a high-performance fiber subjected to knit denit processing. The penetration resistance fabric (I) according to any one of claims 1 to 5, wherein a value of the factor f is in a range of 1.4 to 4. A product (AI) containing the penetration-resistant fabric (I) according to any one of claims 1 to 6. The product (AI) according to claim 7, wherein the product (AI) is one of the following:
i) helmet, vehicle armor, or ceramic composite plate, or
ii) A shatterproof mat, a bulletproof vest, a shatterproof vest, a blade-proof vest, or a combination of at least two of these products.