Patent Publication Number: US-2018035734-A1

Title: Protective glove and manufacturing process thereof

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority to PCT/CN2016/082946, having a filing date of May 23, 2016, based off of Chinese Application No. CN201610047148.X , having a filing date of Jan. 25, 2016 the entire contents of which are hereby incorporated by reference. 
    
    
     FIELD OF TECHNOLOGY 
     The following relates to a protective glove, and in particular to a structure and a manufacturing process of the protective glove. 
     BACKGROUND 
     Gloves are a common protective article, and wearing gloves may achieve good-looking and at the same time, protect the hands. According to different standards, the gloves may have different classification methods. According to materials, gloves may be classified into cotton gloves, woolen gloves, silk gloves, chemical fiber gloves, and composite material gloves; according to styles, gloves may be classified into long gloves, short gloves, single-finger gloves, and fingered gloves; according to usages, gloves may be classified into welding gloves, electric welding gloves, ritual gloves, ski gloves, space gloves, guard gloves, protective gloves, protecting gloves, working gloves, and boxing gloves; and according to functions, gloves may be classified into high-temperature resistant gloves, warming gloves, acid-alkaline resistant gloves, oil-proof gloves, grip gloves, welding gloves, and fire-resistant gloves. 
     The hands are one of the most sophisticated and delicate human parts. A hand is composed of 27 bones, and the bones of two hands account for ¼ of the total bones of a human body. Moreover, distributions and organizations of muscles, blood vessels, and nerves are tremendously complex. At a fingertip, the length of blood capillary in each square centimeter is several meters, and there are thousands of nerve endings. These delicate neural networks may enable us to be aware of cold, hot, or pain within several microseconds, and even may enable us to feel a vibration of an amplitude which is as small as a hair line. The hands keep moving since a person is born, and till the end of life, the hands may average 2.5 hundred million movements during a lifetime. However, we often ignore the importance of the hands, and do not protect the hands appropriately. As a result, among the industrial accidents causing incapacity, accidents of hand injuries are up to 20%. 
     In modern production operations, frontline workers operating a lot of devices such as a rock drill, a pneumatic pick, a pneumatic drill, an electric felling saw, and an electric impact drill tend to suffer from symptoms such as an injury to fingers, arm fatigue, and muscle soreness because of enduring vibrations of a machine which vibrates intensively for a long time. Being in such a working state for a long time will easily bring injuries to muscles or bones and occupational diseases. Therefore, the working condition for workers needs to improve, e.g., wearing professional protective gloves to alleviate muscular tone and fatigue, and reduce an injury probability. 
     At present, there are a lot of impact-resistant gloves. In Utility Model Patent No. 201420238981.9, an impact-resistant glove is proposed. An exterior surface of a front face of the glove is provided with a protective layer, and an internal surface of the front face of the glove is provided with impact-resistant cushions. The impact-resistant cushions are sponge impact-resistant cushions. The number of the sponge impact-resistant cushions is two, and the two sponge impact-resistant cushions are respectively located at a palm portion and a position at which the palm and fingers are connected. An exterior surface of a back face of the glove is provided with a protective cushion which is a quadrilateral rubber protective cushion. The quadrilateral rubber protective cushion includes a plurality of quadrilateral convex strips that are located at middle and upper portions of the quadrilateral rubber protective cushion. The exterior surface of the back face of the glove is further provided with five protective strips that are located at five finger portions, respectively. The protective strips include a plurality of protective bumps, where two ends of each protective bump are protective convex strips. However, the sponge impact-resistant cushions of the protective glove do not have obvious impact-resistant effects. 
     In another Utility Model Patent No. 201220130933.9, a shockproof, heat-resistant, cut-resistant, and wear-resistant glove is proposed. A layer of milled uneven rubber sheets is provided on a palm side of the glove. A plurality of convex bodies connected to each other is distributed on the rubber sheets. Internal of the convex bodies is filled with sponge-shaped air holes. The convex bodies are in a block shape or a section shape. The glove has a layer of uneven rubber sheets. Therefore, in actual use of the workers, it is difficult to bend the fingers and palm to make a fist. As a result, it is difficult to grip a tool or equipment tightly, which may cause an injury. 
     SUMMARY 
     An aspect relates to a protective glove which is mainly applied to industries such as factories, mines, and lumbering. The protective glove has good impact-resistant and anti-vibration effects; has relatively small influence on motions of a hand, for example, bending, making a fist, and stretching; and meanwhile, brings good feelings for gripping equipment or a tool. 
     Another objective of embodiments of the present invention is to provide a manufacturing process of the protective glove. 
     To achieve the foregoing objectives, embodiments of the present invention provides a protective glove. A palm side of the protective glove successively includes, from inside to outside, a base layer, a first coating layer, a palm functional layer, and a second coating layer. A hand back side of the protective glove successively includes, from inside to outside, a base layer, a first coating layer, and a second coating layer. Preferably, the hand back side of the protective glove is provided with a hand back functional layer between the first coating layer and the second coating layer. 
     Preferably, the protective glove is provided with a glove cuff, and the glove cuff is an elastic cuff, a velcro cuff, or a sleeve cuff 
     Preferably, in the protective glove provided in embodiments of the present invention, the base layer may be directly interwoven (including manners of blending and interweaving) by using braided lines, and may also be manufactured by sewing and splicing fabrics woven by using the braided lines. The braided lines of the base layer are woven by one or more of a polyester fiber, a nylon fiber, an aramid fiber, an acrylic fiber, a high-pressure polyethylene fiber, a cotton fiber, a glass fiber, and a special fiber. The special fiber is one or more of a carbon fiber, a graphite fiber, a polytetrafluoroethylene fiber, a polyimide fiber, and a phenolic fiber. 
     Preferably, the first coating layer and the second coating layer are made of natural rubber, synthetic rubber, or plastic. The plastic is PVC, LDPE, PET, PA, or CPP. The synthetic rubber is a vulcanized rubber and a thermoplastic rubber according to a formation process of a rubber product. The vulcanized rubber is a butyl rubber, a nitrile rubber, a styrene-butadiene rubber, a silicon rubber, a latex, or an ethylene-propylene rubber. The thermoplastic rubber is TPU, SBS, SIS, TPO, or TPE. According to actual needs, surfaces of the first coating layer and the second coating layer may be made as frosted surfaces, shiny surfaces, or foam surfaces. 
     Preferably, the palm functional layer is one or more of a wear-resistant layer, a tear-resistant layer, an impact-resistant layer, a puncture-resistant layer, a damping layer, and a cut-resistant layer. 
     Preferably, a material used by the impact-resistant layer is an impact-resistant composite material which is made by one or more of a special fiber, synthetic rubber, and plastic. The damping layer is made of sponge EVA, synthetic rubber, or plastic. The special fiber is a carbon fiber, a graphite fiber, a polytetrafluoroethylene fiber, a polyimide fiber, or a phenolic fiber. The synthetic rubber is a vulcanized rubber and a thermoplastic rubber according to a formation process of a rubber product. The vulcanized rubber is a butyl rubber, a nitrile rubber, a styrene-butadiene rubber, a silicon rubber, a latex, or an ethylene-propylene rubber. The thermoplastic rubber is TPU, SBS, SIS, TPO, or TPE. The plastic is PVC, LDPE, PET, PA, or CPP. 
     A support structure of the impact-resistant layer is triangular, quadrilateral, pentagonal, hexagonal, or circular. The impact-resistant layer may also not use a support structure. Instead, the impact-resistant layer is designed to be planar. When being used, the planar impact-resistant layer is directly adhered or implanted to achieve an objective of resisting impacts. A side length of the support structure of the impact-resistant layer is 0.3-1 cm, and a diameter of a circle is 0.6-1.2 cm. 
     Particularly preferably, the impact-resistant layer may be manufactured as a hexagonal cellular support structure, where a side length of the cellular support structure is 0.3-1 cm, and a height thereof is 0.2-0.7 cm. The cellular support structure is filled with ethylene-propylene rubber. A height of the filled ethylene-propylene rubber needs to exceed 0.1-0.5 cm than the cellular height. Meanwhile, an upper surface of the ethylene-propylene rubber may be provided as a convex-arc or planar structure. According to requirements, the palm functional layer and the second coating layer are adhered by using an adhesive. The adhesive may be a polyvinyl alcohol adhesive. 
     Preferably, the hand back functional layer is one or more of an impact-resistant layer, a high-temperature resistant layer, and a refractory layer. 
     Preferably, the hand back functional layer is made of natural rubber, synthetic rubber, or plastic; and the hand back functional layer is provided in a bone protection area at the hand back. A preferable range of the synthetic rubber or the plastic is as described above. 
     Preferably, a thickness of the first coating layer is 0.2-0.5 cm; a thickness of the second coating layer is 0.3-0.8 cm; and a thickness of the palm functional layer is 0.5-1.5 cm. 
     Preferably, a surface of the second coating layer at the palm side is provided with grip-enhancing points or grip-enhancing bands. A surface of the second coating layer at the hand back side is provided with decorative strips and decorative blocks made of natural rubber, synthetic rubber, or plastic. The grip-enhancing points or the grip-enhancing bands may be provided at a non-joint position of a finger and a palm position of the protective glove. The grip-enhancing points provided at the non-joint position of a finger and the palm position are uniformly distributed. The decorative strip and the decorative block are provided at the hand back side of the protective glove. 
     Generally, the decorative strip and the decorative block provided at the hand back side may be designed according to actual requirements, and materials and manufacturing manners may be changed. At the same time, the decorative strip and the decorative block may also have a function of protecting bones to some degree. 
     According to another aspect, embodiments of the present invention further provides a manufacturing process of the protective glove, where the process includes the following steps: 
     (1) manufacturing a base layer of the glove; 
     (2) after the base layer of the glove is manufactured, sewing, adhering, or dipping a first coating layer on the base layer, so as to form a composite layer including the base layer and the first coating layer; 
     (3) sewing, adhering, implanting, or hot melting a palm functional layer and a hand back functional layer onto the composite layer including the base layer and the first coating layer, separately; 
     (4) adhering or dipping to form a second coating layer to the palm functional layer, the hand back functional layer, and a surface of the first coating layer that is not covered by the palm functional layer and the hand back functional layer; and 
     (5) trimming according to a design length of the glove, and checking whether a product is qualified. 
     Preferably, the manufacturing process of the protective glove further includes, after the trimming in step (5), the following step: sewing a cuff after the trimming according to the design length of the glove. 
     Preferably, in the step (1), the base layer may be directly interwoven (including manners of blending and doping weaving) by using braided lines, and may also be manufactured by sewing and splicing fabrics weaved by using the braided lines. That is, the base layer is woven by using a glove knitting machine, sewn by splicing fabrics, or manufactured by a manner of combining the knitting machine and the splicing. 
     Preferably, in the step (3), the palm functional layer and the hand back functional layer use an integral structure or a separate structure; and the separate structure is provided in a bone protection area at the palm or the hand back. 
     Compared with the prior art, the protective glove provided in the present invention has the following advantages: enhancing a damping function and greatly improving impact-resistant effects of the glove by using an impact-resistant layer; possessing a good resilience performance, so as to significantly protect muscles of a hand and an arm, alleviate impacts, and reduce risks of muscle soreness and injuries; and meanwhile having waterproof and chemical reagent resistant functions. 
     Embodiments of the present invention provide an impact-resistant layer at different locations at a palm and fingers; this would not significantly affect the flexibility of a hand, thereby facilitating to make a fist and take an article. Further, during an operation process, vibrations of the palm and fingers can be significantly reduced. When gripping a tool or equipment, an impact force may be dispersed, alleviated, and released, so as to protect muscles of the hand and the arm from being injured, thereby reducing risks of fatigue and injuries. 
    
    
     
       BRIEF DESCRIPTION 
         FIG. 1  is a schematic diagram of a palm side of a protective glove according to a specific implementation manner of embodiments of the present invention; 
         FIG. 2  is a schematic diagram of a hand back side of a protective glove according to a specific implementation manner of embodiments of the present invention; and 
         FIG. 3  is a schematic sectional diagram of a protective glove along A-A according to a specific implementation manner of embodiments of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     In the drawings:  1 , hand back functional layer;  2 , grip-enhancing point;  3 , cuff;  4 , decorative block;  5 , decorative strip;  6 , base layer;  7 , first coating layer;  8 , palm functional layer;  9 , second coating layer. 
     The following describes the specific structure, composition, and manufacturing process of a protective glove provided in the present invention with reference to the accompanying drawings. 
     Embodiment 1 
     A palm side of the protective glove successively includes, from inside to outside, a base layer  6 , a first coating layer  7 , a palm functional layer  8 , and a second coating layer  9 ; and a hand back side successively includes, from inside to outside, a base layer  6 , a first coating layer  7 , a hand back functional layer  1 , and a second coating layer  9 . Braided lines are manufactured by blending a cotton fiber, a carbon fiber, and an acrylic fiber, and the base layer  6  is woven by using the braided lines. The first coating layer  7  is made by a nitrile rubber with a frosted surface, and a thickness of the first coating layer  7  is 0.3 cm. The palm functional layer  8  uses an impact-resistant composite material which is made into a hexagonal cellular structure by using the carbon fiber or TPE, where a side length of the material is 0.3 cm, and a thickness is 0.7 cm. The cellular structure is filled with an ethylene-propylene rubber, and a height of the filled ethylene-propylene rubber is 1 cm. An upper surface of the ethylene-propylene rubber is provided as a convex arc. The cellular structure is provided as a separate structure, thereby being easy to be bonded for processing. The second coating layer  9  is made by using latex, with a thickness of 0.3 cm. Non-joint positions of five fingers and a palm position of the second coating layer at the palm side are provided with grip-enhancing points  2 . The second coating layer at the hand back side is provided with decorative blocks  4  and decorative strips  5 , where the decorative blocks  4  and the decorative strips  5  are adhered together with the second coating layer  9 . The second coating layer is made into a separate structure, thereby being easy to be bonded. A cuff  3  is an elastic cuff. 
     The following is a manufacturing process of the protective glove: 
     (1) weaving, by a glove knitting machine, a base layer  6  of the glove by using cotton, a carbon fiber, and polyacrylonitrile as a raw material; 
     (2) after the base layer of the glove is manufactured, sewing a first coating layer  7  onto the base layer  6  of the glove so as to form a composite layer of the base layer  6  and the first coating layer  7 ; 
     (3) adhering a palm functional layer  8 , i.e., the impact-resistant composite material in this embodiment, to non-joint positions of five fingers and a palm position of the palm side at the composite layer, where a hand back functional layer  1  uses a planar composite material; 
     (4) adhering a second coating layer  9  to a surface of the palm functional layer  8 , where the second coating layer at the palm side uses a frosted style and is provided with grip-enhancing points  2 ; the grip-enhancing points are provided at non-joint positions of fingers and a palm position of the protective glove; the grip-enhancing points provided at the non-joint positions of the fingers and the palm position are evenly distributed; the second coating layer at a hand back side uses a frosted style and is provided with decorative blocks  4  and decorative strips  5 ; and an adhesive used for adhering is a polyvinyl alcohol adhesive; and 
     (5) trimming according to a design length of the glove; and sewing a glove cuff  3  after the trimming is completed, where the glove cuff is an elastic cuff; and checking, after the sewing is completed, whether positions for sewing and adhering of the glove are tight, and whether the appearance has some defects. 
     Embodiment 2 
     A palm side of the protective glove successively includes, from inside to outside, a base layer  6 , a first coating layer  7 , a palm functional layer  8 , and a second coating layer  9 ; and a hand back side successively includes, from inside to outside, a base layer  6 , a first coating layer  7 , a hand back functional layer  1 , and a second coating layer  9 . Braided lines are manufactured by blending a cotton fiber, a carbon fiber, and a polytetrafluoroethylene fiber, and the base layer  6  is woven by using the braided lines. The first coating layer  7  is made by a nitrile rubber with a frosted surface, and a thickness of the first coating layer  7  is 0.2 cm. The palm functional layer  8  is a damping layer which is made by sponge, where a thickness of this layer is 0.8 cm, and meanwhile, the damping layer is provided as an integral structure, thereby being easy to form. The hand back functional layer  1  is a refractory layer. The second coating layer  9  is made by a silicon rubber, with a thickness of 0.4 cm. Non-joint positions of five fingers and a palm position of the second coating layer at the palm side are provided with grip-enhancing points  2 . The second coating layer at the hand back side is provided with decorative blocks  4  and decorative strips  5 , where the decorative block  4  and the decorative strips  5  are adhered together with the second coating layer  9 . The second coating layer is made into a separate structure, thereby being easy to be bonded. A cuff  3  is a velcro cuff 
     The following is a manufacturing process of the protective glove: 
     (1) weaving, by a glove knitting machine, a base layer  6  of the glove by using cotton, a carbon fiber, and a polytetrafluoroethylene fiber as a raw material; 
     (2) after the base layer of the glove is manufactured, dipping to form a first coating layer  7  onto the base layer  6  of the glove so as to form a composite layer including the base layer  6  and the first coating layer  7 ; 
     (3) implanting a palm functional layer  8 , i.e., the impact-resistant composite material in this embodiment, and a hand back functional layer  1  to the composite layer composed of the base layer  6  of the glove and the first coating layer  7 ; 
     (4) dipping to form a second coating  9  to the palm functional layer  8 , the hand back functional layer  1 , and a surface of the first coating layer  7  that is not covered by the palm functional layer  8  and the hand back functional layer  1 , where the second coating layer at a palm side uses a frosted style and is provided with grip-enhancing points  2 ; the grip-enhancing points are provided at non-joint positions of fingers and a palm position of the protective glove; the grip-enhancing points provided at the non joint positions of the fingers and the palm position are evenly distributed; and the second coating layer at a hand back side uses a frosted style and is provided with decorative blocks  4  and decorative strips  5 ; and 
     (5) trimming according to a design length of the glove; and checking, after the trimming is completed, whether positions for sewing and adhering of the glove are tight, and whether the appearance has some defects. 
     Embodiment 3 
     A palm side of the protective glove successively includes, from inside to outside, a base layer  6 , a first coating layer  7 , a palm functional layer  8 , and a second coating layer  9 ; and a hand back side successively includes, from inside to outside, a base layer  6 , a first coating layer  7 , a hand back functional layer  1 , and a second coating layer  9 . The base layer  6  is manufactured by sewing and splicing acrylic fibers and fabrics. The first coating layer  7  is made by SBS with a frosted surface, and a thickness of the first coating layer  7  is 0.4 cm. The palm functional layer  8  uses an impact-resistant composite material which is made into a circular structure by using graphite fibers and TPO, where a thickness of the material is 1.5 cm, and meanwhile the palm functional layer  8  is provided as a separate structure, thereby being easy to be bonded for processing. The hand back functional layer  1  is an impact-resistant layer which is made of rubber. The second coating layer  9  is made by latex, with a thickness of 0.5 cm. Non-joint positions of five fingers and a palm position of the second coating layer at the palm side are provided with grip-enhancing points  2 . The second coating layer at the hand back side is provided with decorative blocks  4  and decorative strips  5 , where the decorative blocks  4  and the decorative strips  5  are adhered together with the second coating layer  9 . The second coating layer is made into a separate structure, thereby being easy to be bonded. The following is a manufacturing process of the protective glove: 
     (1) manufacturing a base layer  6  of the glove by sewing and splicing acrylic fibers and fabrics; 
     (2) after the base layer of the glove is manufactured, sewing a first coating layer  7  onto the base layer  6  of the glove so as to form a composite layer of the base layer  6  and the first coating layer  7 ; 
     (3) implanting a palm functional layer  8 , i.e., the impact-resistant composite material in this embodiment, and a hand back functional layer  1  to the composite layer composed of the base layer  6  of the glove and the first coating layer  7 ; 
     (4) dipping to form a second coating  9  to the palm functional layer  8 , the hand back functional layer  1 , and a surface of the first coating layer  7  that is not covered by the palm functional layer  8  and the hand back functional layer  1 , where the second coating layer at a palm side uses a frosted style and is provided with grip-enhancing points  2 ; the grip-enhancing points are provided at non-joint positions of fingers and a palm position of the protective glove; the grip-enhancing points provided at the non-joint positions of the fingers and a palm position are evenly distributed; and the second coating layer at a hand back side uses a frosted style and is provided with decorative blocks  4  and decorative strips  5 ; and 
     (5) trimming according to a design length of the glove; and checking, after the sewing is completed, whether positions for sewing and adhering of the glove are tight, and whether the appearance has some defects. 
     The embodiments are only for describing the technical ideas and features of the present invention, and the purpose is to enable persons skilled in the art to understand and implement the content of the present invention. However, the protection scope of the present invention is not limited thereto. All equivalent variations or modifications that are substantially made according to the spirit of the present invention shall fall within the protection scope of the present invention. 
     Although the present invention has been disclosed in the form of preferred embodiments and variations thereon, it will be understood that numerous additional modifications and variations could be made thereto without departing from the scope of the invention. 
     For the sake of clarity, it is to be understood that the use of ‘a’ or ‘an’ throughout this application does not exclude a plurality, and ‘comprising’ does not exclude other steps or elements.