Method of manufacturing stab-resistant fabric using water punching

Abstract

A method of manufacturing stab-resistant fabric using water punching is provided. Aramid fabric and nonwoven aramid fabric are combined through water punching, thereby enhancing activities by ensuring flexibility and stab-resistance performance, and the method is an aramid composite fabric manufacturing method which performs water punching with pressure of 50 to 250 bar when the water punching is performed.

Claims

1. A method of manufacturing stab-resistant fabric using water punching, comprising: interlacing an aramid nonwoven fabric in a high strength fabric formed of aramid yarn through water punching.

2. The method of claim 1, wherein a tissue of the high strength fabric is a tissue selected from plain fabric and twilled fabric.

3. The method of claim 1, wherein the aramid yarn is spun yarn 40/3 (tex 40/strands 3) to 60/2 or 500 to 600 denier filament yarn.

4. The method of claim 1, wherein the density of the fabric is 3030 ply (wrap threadsweft threads) to 8585 ply (wrap threadsweft threads)/5 cm, a basic weight is 100 to 200 gsm, and air permeability is 5 cm.sup.3/cm.sup.2/s or greater.

5. The method of any one of claim 1, wherein the nonwoven fabric is formed of aramid fiber having fineness of 3 to 6 denier, and has a basic weight of 40 to 70 gsm and air permeability of 100 cm.sup.3/cm.sup.2/s or greater.

6. The method of any one of claim 2, wherein the nonwoven fabric is formed of aramid fiber having fineness of 3 to 6 denier, and has a basic weight of 40 to 70 gsm and air permeability of 100 cm.sup.3/cm.sup.2/s or greater.

7. The method of any one of claim 3, wherein the nonwoven fabric is formed of aramid fiber having fineness of 3 to 6 denier, and has a basic weight of 40 to 70 gsm and air permeability of 100 cm.sup.3/cm.sup.2/s or greater.

8. The method of any one of claim 4, wherein the nonwoven fabric is formed of aramid fiber having fineness of 3 to 6 denier, and has a basic weight of 40 to 70 gsm and air permeability of 100 cm.sup.3/cm.sup.2/s or greater.

9. The method of any one of claim 1, wherein the water punching is performed with water pressure of 50 to 250 bar.

10. The method of any one of claim 2, wherein the water punching is performed with water pressure of 50 to 250 bar.

11. The method of any one of claim 3, wherein the water punching is performed with water pressure of 50 to 250 bar.

12. The method of any one of claim 4, wherein the water punching is performed with water pressure of 50 to 250 bar.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other objects and features of the present invention will become apparent from the following description of embodiments, given in conjunction with the accompanying drawings, in which:

[0026] FIG. 1 is a surface-enlarged photograph of general aramid fabric.

[0027] FIG. 2 is a surface-enlarged photograph of general aramid nonwoven fabric.

[0028] FIG. 3 is a conceptual view of a water punching apparatus for manufacturing composite aramid fabric according to an embodiment of the present invention;

DETAILED DESCRIPTION OF THE EMBODIMENT

[0029] Hereinafter, an embodiment of the present invention will be described.

Embodiment 1

[0030] Aramid fabric (plain fabric) having 60/2, 8575 ply/5 cm and basic weight of 140 gsm using Kevlar of DuPont as yarn and Heracron nonwoven fabric (40 gsm) of Kolon as reinforced fabric were prepared. In FIG. 3, preliminary interlacing was performed with pressure of 70 bar by nozzle #1 of a water punching device. Secondary interlacing was performed respectively with pressure of 100 bar by nozzle #2 and with pressure of 110 bar by nozzle #3 through a subsequent continuous process. Main interlacing was performed with pressure of 250 bar by nozzle #4.

[0031] In addition, stripe patterns formed at predetermined intervals were removed with pressure of 100 bar and through random vibration by nozzle #5. The interlaced aramid fabric was dried at a dry temperature of 240 C. for 60 seconds and wound to obtain stab-resistant fabric having a basic weight of 180 g/m.sup.2.

Comparative Example 1

[0032] Aramid fabric (plain fabric) having 60/2, 8575 ply/5 cm and a basic weight of 140 gsm using Kevlar of DuPont as yarn was prepared.

[0033] Stab-resistance performances of the fabric of Embodiment 1 of the present invention and the fabric of Comparative Example 1 prepared above were tested based on NIJ Standard 0115.00 (E1).

TABLE-US-00001 TABLE 1 Total Basic Stab-resistance weight (g/m.sup.2) weight (g/m.sup.2) performance (mm) Embodiment 1 3600 180 2 Comparative 3780 140 5 Example 1

[0034] The comparison between Embodiment 1 and Comparative Example 1 shows that the stab-resistance performance of the composite aramid fabric using water punching according to the present invention is superior, although it is light in weight, compared with otherwise fabric.

[0035] According to the present invention described above, stab-resistant fabric capable of effectively protecting it from impact of a sharp object such as a knife or awl is provided. Further, the present invention can also be used in manufacturing a stab-resistant vest or the like supporting excellent activity through lightness.

[0036] While the invention has been shown and described with respect to the embodiments, the present invention is not limited thereto. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.