Anti-puncture glove and online production process and equipment

Abstract

The invention provides an anti-puncture glove and an online production process and equipment, the anti-puncture glove comprises a palm part and a wrist part, the glove comprises a glove outer layer, a glove middle layer and a glove inner layer, and the glove middle layer is located at the palm part; the glove middle layer is made of superfine fibers, connecting glue and conductive particles, and the connecting glue and the glove outer layer are made of the same material. The glove middle layer made of the superfine fibers is arranged between the glove outer layer and the glove inner layer, the strength of the glove is improved through the superfine fibers in the glove middle layer, and the situation that needles are punctured into the glove is effectively prevented. The whole body is thin, and the wearing comfort and the operation flexibility of medical staff are not affected. The middle layer glue solution is sprayed on the surface of the outer layer of the glove through the spraying device, and compared with a traditional gum dipping process, the influence of bubbles generated by stirring and gum dipping on the quality of the glove is avoided. The middle layer glue solution is recycled through the conveying pipe and the spraying pump, the redundant middle layer glue solution is recycled, and waste of raw materials is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical glove technology, and more particularly to a puncture-resistant glove and its online production process and equipment. Background Technology

[0002] According to the International Society for Occupational Safety and Health, approximately 600,000 to 800,000 professionals in the United States suffer needlestick injuries each year. Domestic research shows that only 10.13% of nursing staff are free of needlestick injuries, while 89.87% of nursing staff experience an average of six needlestick injuries per person, with a needlestick injury rate of 100% in the nursing group. Needlestick injuries can lead to the transmission of bloodborne diseases, causing serious or potentially fatal infections such as hepatitis B virus, hepatitis C virus, and human immunodeficiency virus (HIV) infection.

[0003] Studies have shown that when healthcare workers wear latex or polyethylene gloves during intravenous punctures, the amount of blood exposed to the puncture site is reduced by more than 50% compared to when not wearing gloves. In other words, wearing gloves during professional procedures only reduces the risk of infection by about 50% when punctured.

[0004] Existing medical gloves are generally made of materials such as natural latex, synthetic rubber, and thermoplastic elastomers. To better fit the hand and ensure good tactile feedback and dexterity, these gloves are typically not very thick, thus increasing the risk of needle punctures. Existing puncture-resistant gloves often employ a multi-layered structure, such as CN211484905U, a medical glove with puncture-resistant functionality. The puncture-resistant layer is made of ultra-high molecular weight polyethylene knitted fabric, which not only increases the glove's thickness and affects the feel during operation but also increases the difficulty of glove production. Summary of the Invention This invention provides a puncture-resistant glove and an online production process and equipment to solve the problem of increased thickness and production difficulty in multi-layer gloves in the prior art.

[0005] This invention provides a puncture-resistant glove, including a palm portion and a wrist portion. The glove includes an outer glove layer, a middle glove layer, and an inner glove layer, with the middle glove layer located in the palm portion. The material of the middle layer of the glove includes microfiber, bonding adhesive, and conductive particles, with the bonding adhesive being the same material as the outer layer of the glove.

[0006] This invention also provides a manufacturing process for puncture-resistant gloves, comprising the following steps: S1: Prepare the outer layer adhesive, the middle layer adhesive, and the inner layer adhesive; S2: Immerse the glove mold in the outer layer of adhesive liquid, up to the wrist area, and then remove it and put it into the oven to dry; S3: Apply the intermediate layer adhesive to the palm part of the dry outer layer of the glove using electrostatic spraying. S4: Immerse the glove mold in the inner layer of the adhesive, and then immerse it in the wrist area as well. After that, remove it and put it into the oven to dry and shape.

[0007] Furthermore, the outer adhesive layer includes any one of rubber, nitrile, or polyurethane.

[0008] Furthermore, the inner adhesive layer includes any one of rubber latex, nitrile latex, polyurethane, polyacrylate, or SSA / OLC.

[0009] Furthermore, the length of the microfiber is less than 2 mm, and the diameter of the microfiber is 1 to 20 µm.

[0010] Furthermore, the method also includes performing the following steps after step S1 and before step S2: S11: Hand mold treatment: Clean the glove mold to remove chemical residues from the glove mold; S12: Coagulant Impregnation: Immerse the glove mold in a tank containing a coagulant, up to the wrist area.

[0011] The present invention also provides an online spraying device, applied to step S3 of the production process of any of the above-mentioned puncture-resistant gloves, comprising a spraying chamber and a spraying mechanism; The side wall of the spray booth is provided with a mold opening, which allows the glove mold to be inserted and moved. The spraying mechanism is connected to the top of the spraying chamber. The glove mold extends into the mold opening and moves below the spraying mechanism. The spraying mechanism is used to spray the electrically charged intermediate layer adhesive onto the glove mold that moves below.

[0012] Furthermore, it also includes an electret cell, and a coating tank located below the spraying mechanism is provided in the spraying chamber. The coating tank is used to hold the intermediate layer adhesive, and the mold opening is located between the spraying mechanism and the coating tank. The spraying mechanism includes a nozzle, a delivery pipe and a spraying pump. The nozzle is fixedly installed on the top of the spraying chamber and faces the coating tank. One end of the delivery pipe is connected to the nozzle and the other end of the delivery pipe is connected to the coating tank. Two feed pipes connect the electret cell and the coating tank, and a circulation pump is connected to either feed pipe. The electret cell is used to charge the intermediate layer adhesive.

[0013] Furthermore, the electret cell is charged using inductive charging.

[0014] Furthermore, a stirring paddle and a stirring motor are connected to the bottom of the coating tank, with the stirring motor used to drive the stirring paddle to rotate.

[0015] The beneficial effects of this invention are as follows: 1. The glove features a microfiber interlayer between the outer and inner layers. This microfiber increases the glove's strength and effectively prevents needles from penetrating. The overall design is thin, ensuring comfort and operational flexibility for healthcare workers.

[0016] 2. The intermediate layer adhesive is sprayed onto the surface of the outer layer of the glove using a spraying device. Compared with the traditional dipping process, this avoids the impact of air bubbles generated during stirring and dipping on the quality of the glove.

[0017] 3. The intermediate layer adhesive is recycled through delivery pipes and spray pumps, allowing for the recovery and reuse of excess intermediate layer adhesive and reducing raw material waste. Attached Figure Description

[0018] Figure 1 This is a schematic diagram showing the connection relationship between the palm portion and the wrist portion of the puncture-resistant glove of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the inner layer, middle layer and outer layer of the puncture-resistant glove of the present invention.

[0020] Figure 3 This is a schematic diagram of the overall structure of the spraying equipment of the present invention.

[0021] Figure 4 This is a schematic diagram of the spraying mechanism of the present invention.

[0022] Figure label: 1. Inner layer of glove; 11. Middle layer of glove; 12. Wrist part; 13. Palm part; 2. Outer layer of glove; 3. Spraying chamber; 31. Electret cell; 32. Feed pipe; 33. Spraying mechanism; 331. Spraying pump; 332. Nozzle; 34. Conveying pipe; 35. Glove conveying mechanism; 351. Conveying trough; 352. Glove mold; 353. Connecting device; 36. Coating tank; 37. Agitator; 38. Mold opening. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0024] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0025] The following is combined with Figures 1-4 This invention describes a puncture-resistant glove.

[0026] In one specific embodiment, such as Figure 1 , Figure 2 As shown, the glove includes a palm portion 13 and a wrist portion 12. The glove includes an outer glove layer 2, a middle glove layer 11, and an inner glove layer 1. The middle glove layer 11 is located in the palm portion 13. The material of the middle glove layer 11 includes microfiber, adhesive, and conductive particles. The adhesive is made of the same material as the outer glove layer 2.

[0027] The glove's middle layer 11 is a puncture-resistant layer, composed of microfiber, adhesive, and conductive particles. The microfiber enhances the puncture resistance of the palm portion 13. Meanwhile, the adhesive acts as a bonding agent between the fibers, and because it is made of the same material as the outer glove layer 2, it helps the middle layer 11 adhere better to the outer glove layer 2.

[0028] This invention also discloses a manufacturing process for puncture-resistant gloves, used to prepare the aforementioned puncture-resistant gloves, comprising the following steps: S1: Prepare the outer layer adhesive, the middle layer adhesive, and the inner layer adhesive; Specifically, the outer layer adhesive is one of rubber, nitrile, or polyurethane, and the inner layer adhesive is one of rubber latex, nitrile latex, polyurethane, or other coating materials such as polyacrylate or SSA / OLC. The middle layer adhesive is prepared by mixing microfibers, the outer layer adhesive, and conductive particles. Specifically, by weight, the middle layer adhesive includes 1-20 parts of microfibers, 70-99 parts of the outer layer adhesive, and 0.1-10 parts of conductive particles. The conductive particles can be inorganic salts such as NaCl and KCl. The microfibers are less than 2 mm in length and 1-20 µm in diameter. The microfibers are made of one or more of the following materials: ultra-high molecular weight polyethylene fibers with a tensile strength greater than 500 MPa, aramid fibers, PVA fibers, polyester fibers, and polypropylene fibers.

[0029] S2: Immerse the glove mold 352 into the outer layer adhesive liquid, up to the wrist part 12, and then remove it and put it into the oven to dry, forming the outer layer 2 of the glove; S3: The intermediate layer adhesive is sprayed onto the palm part 13 of the dry outer layer 2 of the glove using electrostatic spraying to form the intermediate layer 11 of the glove. Specifically, the intermediate layer adhesive is inductively charged, and the intermediate layer adhesive mixed with ultrafine fibers and carrying the same charge is evenly sprayed onto the palm part 13 of the dry outer layer 2 of the glove, forming a disordered fiber network layer. The fibers can form a network structure with countless interlacing points to wrap the palm part 13. These interlacing points can play a reinforcing role and effectively prevent needles from piercing the glove.

[0030] S4: Immerse the glove mold 352 into the inner layer adhesive liquid, and similarly immerse the wrist part 12. Then remove it and put it into the oven to dry and shape, forming the inner layer 1 of the glove.

[0031] In an optional embodiment, after completing step S1 and before proceeding to step S2, the following steps are performed: S11: Hand mold treatment: Clean the glove mold 352 to remove chemical residues from the glove mold.

[0032] Specifically, the glove mold 352 is subjected to steps such as alkaline washing, acid washing, brushing, and hot water washing to remove chemical residues on the glove mold 352; S12: Coagulant impregnation: Immerse the glove mold 352 into a tank containing a coagulant, immersing it up to the wrist portion 12.

[0033] Specifically, the glove mold 352 is immersed in a tank containing a coagulant, up to the wrist part 12. The coagulant facilitates the adhesion of the adhesive and also makes subsequent demolding easier. The coagulant includes one or more of calcium carbonate, calcium chloride, and calcium nitrate solutions.

[0034] In an optional embodiment, after completing step S4, the following steps are performed: S5: Perform post-processing, which includes leaching, edge curling, demolding, and chlorination.

[0035] The present invention also discloses an online spraying device for use in step S3 of the production process of puncture-resistant gloves in any of the above embodiments. The online spraying device includes a spraying chamber 3 and a spraying mechanism 33. A mold opening 38 is provided on the side wall of the spraying chamber 3, through which a glove mold 352 extends and moves. The spraying mechanism 33 is connected to the top of the spraying chamber 3. The glove mold 352 extends into the mold opening 38 and moves below the spraying mechanism 33. The spraying mechanism 33 is used to spray an electrically charged intermediate layer adhesive onto the glove mold 352 moving below.

[0036] Specifically, such as Figure 3 , Figure 4 As shown, the online spraying equipment includes a spraying chamber 3 and a spraying mechanism 33. When using the online spraying equipment, the dried glove, along with the glove mold 352, enters the spraying chamber 3 from one end of the mold opening 38 in step S2 and moves within the spraying chamber 3, and then moves out of the spraying chamber 3 from the other end of the mold opening 38. When the glove mold 352 is located in the spraying chamber 3, the palm portion 13 of the glove mold 352 is located below the spraying mechanism 33. The spraying mechanism 33 sprays an electrically charged intermediate layer adhesive onto the moving glove mold 352 below, thereby forming a glove intermediate layer 11 on the palm portion 13 of the glove mold 352.

[0037] Furthermore, it also includes an electret cell 31. A coating tank 36 is provided within the spraying chamber 3, located below the spraying mechanism 33. The coating tank 36 is used to hold the interlayer adhesive. A mold opening 38 is located between the spraying mechanism 33 and the coating tank 36. The spraying mechanism 33 includes a nozzle 332, a delivery pipe 34, and a spraying pump 331. The nozzle 332 is fixedly installed on the top of the spraying chamber 3 and faces the coating tank 36. One end of the delivery pipe 34 is connected to the nozzle 332, and the other end is connected to the coating tank 36. Two feed pipes 32 are connected between the electret cell 31 and the coating tank 36. A circulation pump is connected to either feed pipe 32. The electret cell 31 is used to charge the interlayer adhesive.

[0038] Specifically, such as Figure 3 , Figure 4 As shown, the mold opening 38 is located between the spraying mechanism 33 and the coating tank 36. During spraying, the glove mold 352 extends between the spraying mechanism 33 and the coating tank 36 and moves between them. The intermediate layer adhesive is placed in the coating tank 36 and the electret cell 31. The spraying pump 331 drives the intermediate layer adhesive in the coating tank 36 to the nozzle 332 for spraying via the delivery pipe 34. The nozzle 332 faces downwards, and some of the coating solution adheres to the glove. Excess intermediate layer adhesive falls back into the coating tank 36 to continue participating in subsequent spraying, reducing material waste. Simultaneously, a circulation channel is formed between the electret cell 31 and the coating tank 36 through the feeding pipe 32. The circulation pump drives the intermediate layer adhesive to circulate between the electret cell 31 and the coating tank 36. The intermediate layer adhesive is charged in the electret cell 31 and flows into the coating tank 36 to participate in spraying. The intermediate layer adhesive set in the electret cell 31 not only ensures sufficient raw materials but also guarantees the durability of the electret charge on the raw materials. During spraying, the intermediate layer adhesive is sprayed out through the nozzle 332 by the spraying mechanism 33. The charged intermediate layer adhesive generates self-repulsion during its fall, thereby forming uniform atomized droplets that cover the outer layer 2 of the glove, thus improving product quality.

[0039] Specifically, the spraying mechanism 33 contains at least two spray nozzles 332. When there are two spray nozzles 332, one spray nozzle 332 is positioned directly above the one-quarter mark of the length of the palm portion 13 of the glove mold 352, and the other spray nozzle 332 is positioned directly above the three-quarter mark of the length of the palm portion 13 of the next glove mold 352. The uniformity of spraying can be adjusted by regulating the amount of coating pumped. When there are more than two spray nozzles 332, more spray nozzles 332 are added in the conveying direction of the glove mold 352, with the added spray nozzles 332 staggered according to the positions of the first two spray nozzles 332. The horizontal position of the spray nozzles 332 can be adjusted along the length of the glove, and the distance between the spray nozzles 332 and the glove mold 352 can also be adjusted vertically to accommodate different glove sizes.

[0040] In an alternative embodiment, such as Figure 3 , Figure 4 As shown, the online spraying equipment also includes a glove conveying mechanism 35, which includes a connecting device 353 and a conveying trough 351. A glove mold 352 is connected to the connecting device 353, which rolls within the conveying trough 351. The connecting device 353 rolls forward along the conveying trough 351, simultaneously causing the glove mold 352 to roll as well, further improving the spraying effect of the intermediate layer adhesive.

[0041] Specifically, the connecting device 353 can be configured as a rolling wheel. The side wall of the rolling wheel is inserted into the conveying groove 351. When the glove mold 352 moves from one end of the mold opening 38 to the other end of the mold opening 38, the friction between the rolling wheel and the conveying groove 351 drives the connecting device 353 to roll forward together with the glove mold 352.

[0042] Specifically, the connecting device 353 can also be configured as a rolling gear, and the conveying groove 351 can be configured as a rack. When the glove mold 352 moves from one end of the mold opening 38 to the other end of the mold opening 38, the rolling gear meshes with the rack, thereby driving the connecting device 353 to roll forward together with the glove mold 352.

[0043] Furthermore, the electret cell 31 is charged using inductive charging, so that the intermediate layer adhesive liquid carries the same charge.

[0044] Specifically, an electric field is applied across the two ends of the electret cell 31, acting on the intermediate layer of the gel inside the electret cell 31. Free ions or polar molecules in the intermediate layer of the gel become polarized; positive ions tend to move closer to the negative electrode, while negative ions are repelled to the positive electrode. At this point, connecting the negative electrode to a grounded conductor causes the positive ions to be conducted away and neutralized, resulting in an excess of negative charge in the gel. This gives the entire liquid flow a net negative charge, thus completing the inductive charging process.

[0045] The adhesive liquid carrying a net negative charge is sprayed out through the pipe. These droplets with the same charge repel each other, thus making the atomization more uniform and fine.

[0046] Furthermore, such as Figure 3 As shown, a stirring paddle 37 and a stirring motor are connected to the bottom of the coating tank 36. The stirring motor drives the stirring paddle 37 to rotate. The stirring motor drives the stirring paddle 37 to rotate, continuously stirring the solution in the coating tank 36 to prevent the internal fibers from accumulating or settling.

[0047] The online spraying equipment works in conjunction with existing glove production lines to achieve continuous spraying and online glove production.

[0048] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A puncture-resistant glove, characterized in that: The glove includes a palm portion and a wrist portion, and comprises an outer glove layer, a middle glove layer, and an inner glove layer, with the middle glove layer located in the palm portion; The material of the middle layer of the glove includes microfiber, adhesive, and conductive particles, and the material of the adhesive is the same as that of the outer layer of the glove.

2. A manufacturing process for puncture-resistant gloves, characterized in that, Includes the following steps: S1: Prepare the outer layer adhesive, the middle layer adhesive, and the inner layer adhesive; S2: Immerse the glove mold in the outer layer of adhesive liquid, up to the wrist area, and then remove it and put it into the oven to dry; S3: Apply the intermediate layer adhesive to the palm part of the dry outer layer of the glove using electrostatic spraying. S4: Immerse the glove mold in the inner layer of the adhesive, and then immerse it in the wrist area as well. After that, remove it and put it into the oven to dry and shape.

3. The manufacturing process of the puncture-resistant gloves according to claim 2, characterized in that: The outer adhesive layer includes any one of rubber, nitrile, and polyurethane.

4. The manufacturing process of the puncture-resistant gloves according to claim 2, characterized in that: The inner layer adhesive includes any one of rubber latex, nitrile latex, polyurethane, polyacrylate, and SSA / OLC.

5. The manufacturing process of the puncture-resistant gloves according to claim 2, characterized in that: The length of the ultrafine fiber is less than 2 mm, and the diameter of the ultrafine fiber is 1 to 20 µm.

6. The manufacturing process of the puncture-resistant gloves according to claim 2, characterized in that, This also includes the following steps performed after step S1 and before step S2: S11: Hand mold treatment: Clean the glove mold to remove chemical residues from the glove mold; S12: Coagulant Impregnation: Immerse the glove mold in a tank containing a coagulant, up to the wrist area.

7. An online spraying device, applied to the production process of the puncture-resistant gloves according to any one of claims 2 to 6, characterized in that: Includes the spray booth and spraying mechanism; The side wall of the spraying chamber is provided with a mold opening, which allows the glove mold to extend into and move. The spraying mechanism is connected to the top of the spraying chamber. The glove mold extends into the mold opening and moves below the spraying mechanism. The spraying mechanism is used to spray an electrically charged intermediate layer adhesive onto the glove mold that is moving below.

8. The online spraying equipment according to claim 7, characterized in that: It also includes an electret cell, and the spraying chamber is provided with a coating tank located below the spraying mechanism. The coating tank is used to hold the intermediate layer adhesive, and the mold opening is located between the spraying mechanism and the coating tank. The spraying mechanism includes a nozzle, a delivery pipe, and a spraying pump. The nozzle is fixedly installed on the top of the spraying chamber and faces the coating tank. One end of the delivery pipe is connected to the nozzle, and the other end of the delivery pipe is connected to the coating tank. Two feed pipes are connected between the electret cell and the coating tank, and a circulation pump is connected to either feed pipe. The electret cell is used to charge the intermediate layer adhesive.

9. The online spraying equipment according to claim 8, characterized in that: The electret cell is charged using inductive charging.

10. The online spraying equipment according to claim 8, characterized in that: The bottom of the coating tank is connected to a stirring paddle and a stirring motor, and the stirring motor is used to drive the stirring paddle to rotate.

Images