Method for manufacturing bulletproof fabric

Abstract

Disclosed is a method for manufacturing bulletproof fabric, the method comprising weaving fabric; scouring the fabric; applying a pretreatment process to the scoured fabric; and applying a water-repellent process to the pretreated fabric, wherein the pretreatment process comprises adjusting a moisture regain of the scoured fabric. In this method, the fabric is treated with the pretreatment process before the water-repellent process, so that it is possible to maintain the constant concentration of water-repellent composition, and to permeate the water-repellent agent into the fabric with easiness, thereby producing the bulletproof fabric with the uniform and good water-repellent property. Thus, even though the bulletproof fabric is used for a long period of time, it is possible to prevent deterioration of the bulletproof property in the fabric.

1 . A method for manufacturing bulletproof fabric comprising:
 weaving fabric;   scouring the fabric;   applying a pretreatment process to the scoured fabric; and   applying a water-repellent process to the pretreated fabric,   wherein the pretreatment process comprises adjusting a moisture regain of the scoured fabric.   
     
     
         2 . The method according to  claim 1 , wherein the moisture regain of the fabric is 0.1˜3% after the process of adjusting the moisture regain of the scoured fabric. 
     
     
         3 . The method according to  claim 1 , wherein the pretreatment process comprises a flattening process to flatten the scoured fabric by applying a tension in right and left directions. 
     
     
         4 . The method according to  claim 1 , wherein both the pretreatment process and the water-repellent process are carried out in the same apparatus. 
     
     
         5 . The method according to  claim 4 , wherein a temperature of the fabric just before the water-repellent process is maintained at 50% or more of a temperature of the fabric just after the pretreatment process, so as to enable an easy permeation of water-repellent agent into the fabric. 
     
     
         6 . The method according to  claim 1 , wherein the pretreatment process is carried out at 90˜190° C. 
     
     
         7 . The method according to  claim 1 , wherein the pretreatment process is carried out under the circumstance that the fabric moves at 6˜50 mpm. 
     
     
         8 . The method according to  claim 1 , wherein the water-repellent process comprises a heat treatment for heating the fabric at 120˜200° C. for 15˜150 seconds. 
     
     
         9 . The method according to  claim 1 , wherein the process of weaving the fabric comprises weaving aromatic polyamide multifilament as warp and weft in a plain or basket type.