Patent Publication Number: US-11396719-B2

Title: Anti-cutting rubber-coated yarn

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This is a 371 application of the International PCT application serial no. PCT/CN2018/080641, filed on Mar. 27, 2018 which claims the priority benefits of China Application No. 201710907404.2 filed on Sep. 29, 2017. The entirety of each of the above-mentioned patent applications is hereby incorporated by reference herein and made a part of this specification. 
     BACKGROUND 
     Technical Field 
     The present invention relates to a rubber-coated yarn, and in particular, to an anti-cutting rubber-coated yarn for use in personal protective articles. 
     Description of Related Art 
     Most of the existing coated yarns are PE-coated yarns, and have poor cutting resistance when used in gloves. The protection level of the products produced therefrom generally can only reach Level 3 of the American Standard, which cannot be well adapted to the occasions requiring cutting resistance. 
     In order to improve the cutting resistance level, at present, materials such as glass fiber or steel wire are added to the PE-coated yarn. Since the glass fiber has the defects such as brittleness and hardness, and the particulates generated by the broken glass fiber are easily inhaled into the human body to induce diseases, the glass fiber is gradually not accepted by Europe and other regions. In addition, since the steel wire is hard, the weaving property is poor and it is gradually unpopular. 
     SUMMARY 
     An object of the present invention is to provide an anti-cutting coated yarn, in which an anti-cutting layer (a mixed rubber layer) is used to be coated on an outer surface of an existing PE yarn or high-strength polyethylene fiber yarn or other yarn. The anti-cutting layer is firmly attached on a surface of the yarn, so as to improve the anti-cutting level of the yarn without affecting the weaving property of the yarn, such that the anti-cutting level of protective gloves woven from the anti-cutting coated yarn can reach Level 5 of the American Standard. Moreover, the gloves are lightweight and flexible, and protect an operator&#39;s hands from the threat of cutting and puncture from work. 
     The present invention adopts following technical solutions. 
     An anti-cutting rubber-coated yarn includes a yarn body and a mixed rubber layer coated on the yarn body. A plurality of tiny pits are distributed on a surface of the yarn body, and the mixed rubber layer is attached in the pits and is coated on an outside of the yarn body. 
     Further, the mixed rubber layer is formed by mixing one of butadiene-acrylonitrile rubber, latex, neoprene rubber, and silica gel, or a mixture thereof in any ratio and a tiny hard particle. 
     Further, the yarn body is a PE yarn, a PE-coated yarn coated with spandex, a PE-coated yarn coated with nylon, or a PE-coated yarn coated with spandex and nylon. 
     Preferably, the yarn body is a high-strength polyethylene fiber, a high-strength polyethylene fiber-coated yarn coated with spandex, a high-strength polyethylene fiber-coated yarn coated with nylon, or a high-strength polyethylene fiber-coated yarn coated with spandex and nylon. 
     Further, the tiny hard particle is one of a metal particle and a stone particle, or a mixture thereof. 
     Further, the tiny hard particle is one of SiO 2  and glass fiber powder, or a mixture thereof in any ratio. 
     A pigment substance is added to the mixed rubber layer as needed. 
     A flame retardant substance, a moisture sweat-absorbing substance, a heating substance, or a refrigerating substance, such as carbon black and a self-heating composite material is added to the mixed rubber layer as needed. 
     Further, a material of the yarn body is HPPE, nylon, dacron, Kevlar, aramid, bamboo fiber, acrylic fiber, or tencel. 
     According to the present invention, numerous tiny pits are made by etching on the surface of the existing yarn body, and also, molecular bonds on the surface of the yarn body are broken, such that in the dipping process, molecular bonding occurs between the rubber and the yarn body while the pits are filled with the rubber and the tiny hard particles, further enhancing the adsorption fastness of the mixed rubber layer. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic structural diagram of the present invention. 
         FIG. 2  is a schematic structural diagram of a yarn body of the present invention. 
         FIG. 3  is a schematic structural diagram of a mixed rubber layer of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     As shown in  FIG. 1  to  FIG. 3 , an anti-cutting rubber-coated yarn comprises a yarn body and a mixed rubber layer coated on the yarn body. The mixed rubber layer is formed by mixing one of butadiene-acrylonitrile rubber, latex, neoprene rubber, and silica gel, or a mixture thereof in any ratio and tiny hard particles. The tiny hard particle is one of a metal particle and a stone particle, or a mixture thereof. The yarn body is a PE yarn, a PE-coated yarn coated with spandex, a PE-coated yarn coated with nylon, or a PE-coated yarn coated with spandex and nylon. 
     Numerous irregularly distributed tiny pits are made by etching on a surface of the yarn body, and also, and at the same time, molecular bonds on the surface of the PE yarn are broken, and the mixed rubber layer is attached in the pits and coated on an outside of the yarn body. Since during the rubber coating process, the molecular bonding occurs between the rubber and the PE in the mixed rubber layer, the adsorption force between the mixed rubber layer and the yarn body is further enhanced, and simultaneously the anti-cutting level of the yarn is improved without affecting the weaving property of the yarn, such that the anti-cutting level of protective gloves woven from the anti-cutting coated yarn can reach Level 5 of the American Standard. Moreover, the gloves are lightweight and flexible, and protect an operator&#39;s hands from the threat of cutting and puncture from work. 
     It is noted herein that the tiny hard particle is one of SiO 2  and glass fiber powder, or a mixture thereof in any ratio. 
     Preferably, the yarn body is a high-strength polyethylene fiber, a high-strength polyethylene fiber-coated yarn coated with spandex, a high-strength polyethylene fiber-coated yarn coated with nylon, or a high-strength polyethylene fiber-coated yarn coated with spandex and nylon. 
     A pigment substance is added to the mixed rubber layer as needed. 
     A flame retardant substance, a moisture sweat-absorbing substance, a heating substance, or a refrigerating substance, such as carbon black and a self-heating composite material, and so on, is added to the mixed rubber layer as needed. 
     On the basis of the foregoing technical solution, the material of the yarn body may further be HPPE, nylon, dacron, Kevlar, aramid, bamboo fiber, acrylic fiber, or tencel.