A process for preparing high-strength compounded resin-reinforced nitrile-coated gloves

Abstract

The application discloses a preparation process of a high-strength compound-resin-reinforced butyronitrile-coated glove, and comprises the following steps: step one, according to a set ratio, butyronitrile latex, high-solid polybutadiene latex, chlorobutadiene latex, vulcanizing agent, reinforcing agent and filling agent are sequentially weighed and uniformly mixed to obtain high-strength compound-resin liquid; step two, butyronitrile coating is first coated on the front surface of the palm part and the finger part of a glove core; step three, the glove core coated with the butyronitrile coating is sleeved on a special hand mold; step four, the thumb and the index finger of the glove core and the thenar eminence are immersed in a treatment liquid at a specific angle; step five, after the treatment liquid is dried, the thumb and the index finger of the glove core and the thenar eminence are immersed in high-strength compound-resin liquid; step six, after the glue is immersed, the special hand mold is turned over and is dried and vulcanized; step seven, then, the glove is demolded and naturally cooled to obtain the high-strength compound-resin-reinforced butyronitrile-coated glove; the high-strength compound-resin-reinforced butyronitrile-coated glove is not only durable and wear-resistant, but also flexible to use.

Description

Technical Field

[0001] This invention relates to the field of work gloves technology, specifically to a manufacturing process for nitrile coated gloves reinforced with high-strength composite resin. Background Technology

[0002] Under normal conditions, the durability of the rubber surface of nitrile coated gloves is very low, especially in the web area (between the thumb and forefinger), which is used most frequently in specific working environments and is also the most prone to damage. Therefore, reinforcement is applied to the web area of ​​nitrile coated gloves. Currently, there are two main methods for web area reinforcement: 1) While sewing leather into the web area makes it harder and thicker, it restricts flexibility during use and requires sewing each glove individually, resulting in low production efficiency and long production time; 2) Applying nitrile rubber to the web area results in poor adhesion and lower strength, which may not meet the requirements for long-term durability and prevent damage, thus sometimes failing to extend the lifespan of the gloves. Therefore, these problems urgently need to be addressed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a manufacturing process for nitrile coated gloves reinforced with high-strength compound resin. By immersing the thumb, index finger and the web of the hand in high-strength compound resin liquid, the gloves are not only durable and wear-resistant, but also flexible in use. This overcomes the defect that traditional gloves reinforced with a single nitrile coating on the web of the hand cannot achieve durability, thereby improving the service life of the gloves.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The innovative aspect of the present invention's process for preparing high-strength composite resin-reinforced nitrile coated gloves lies in including the following steps:

[0005] Step 1: Weigh out the nitrile latex, high-solids butadiene latex, chloroprene latex, vulcanizing agent, reinforcing agent and filler in sequence according to the set ratio, and mix them thoroughly to obtain a high-strength compound resin solution.

[0006] In the above steps, the weight ratio of nitrile latex, high-solids butadiene latex and chloroprene latex is 30~50:10~20:20~30;

[0007] In the above steps, the reinforcing agent and filler are a composite of graphene oxide and zirconium dioxide;

[0008] Step 2: First, apply a nitrile coating to the front of the palm and finger areas of the glove core;

[0009] Step 3: Place the nitrile-coated glove core onto the special hand mold;

[0010] Step 4: Dip the thumb and index finger, as well as the web of the hand, in the treatment solution at a specific angle;

[0011] Step 5: After the treatment solution is dried, immerse the thumb and index finger, as well as the web of the hand, in the high-strength compound resin solution.

[0012] In the above steps, after the impregnation treatment solution, the special hand mold with the glove core is placed in an oven to dry and baked at 55~70℃ for 15~20 minutes.

[0013] In the above steps, the high-strength compound resin liquid obtained in step one is filtered, vacuumed and degassed in sequence and then placed in the impregnation tank. The thumb and index finger of the glove core and the tiger's mouth are then impregnated with the resin for 0.3s.

[0014] Step Six: After impregnation with resin, turn the special hand mold over and dry and vulcanize it;

[0015] Step 7: Then demold and allow to cool naturally to obtain nitrile coated gloves reinforced with high-strength composite resin.

[0016] Preferably, in step one above, the nitrile latex, high-solids butadiene latex, and chloroprene latex constitute three types of latex, and the weight ratio of these three types of latex to the vulcanizing agent is 30~50:1; the vulcanizing agent is a mixture of nano zinc oxide and water in a weight ratio of 1:2~3.

[0017] Preferably, in step six above, during the process of flipping the special hand mold, it is necessary to ensure that the adhesive does not flow randomly.

[0018] Preferably, in step six above, the drying and vulcanization temperature is 80~110℃, and the drying and vulcanization time is 1~2h.

[0019] The beneficial effects of this invention are:

[0020] (1) The present invention, by immersing the thumb, index finger and the web of the hand in a high-strength compound resin liquid, not only makes the gloves durable and wear-resistant, but also flexible in use, overcoming the defect that traditional gloves with a single nitrile coating on the web of the hand cannot achieve durability, thereby improving the service life of the gloves.

[0021] (2) The present invention has a simple process, is easy to operate, and has high production efficiency. Moreover, its cut resistance, tear resistance and puncture resistance are all at level 4, which can meet the requirements of use. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a flowchart illustrating the preparation process of a high-strength composite resin-reinforced nitrile coated glove according to the present invention. Detailed Implementation

[0024] The technical solution of the present invention will be clearly and completely described below through specific embodiments.

[0025] The present invention provides a process for preparing nitrile coated gloves reinforced with high-strength composite resin, such as... Figure 1 As shown, it includes the following steps:

[0026] Step 1: Weigh out the nitrile latex, high-solids butadiene latex, chloroprene latex, vulcanizing agent, reinforcing agent and filler in sequence according to the set ratio, and mix them thoroughly to obtain a high-strength compound resin solution.

[0027] In the above steps, the weight ratio of nitrile latex, high-solids butadiene latex, and chloroprene latex is 30~50:10~20:20~30; the reinforcing agent and filler are graphene oxide and zirconium dioxide composites.

[0028] In the above steps, nitrile latex, high-solids butadiene latex, and chloroprene latex constitute three types of latex, and the weight ratio of these three types of latex to vulcanizing agent is 30~50:1; the vulcanizing agent is a mixture of nano zinc oxide and water in a weight ratio of 1:2~3.

[0029] Step 2: First, apply a nitrile coating to the front of the palm and fingers of the glove core.

[0030] Step 3: Place the nitrile-coated glove core onto the special hand mold.

[0031] Step 4: Dip the thumb and index finger, as well as the web of the hand, in the treatment solution at a specific angle.

[0032] Step 5: After the treatment solution is dried, immerse the thumb and index finger, as well as the web of the hand, in the high-strength compound resin solution.

[0033] In the above steps, after the impregnation treatment solution, the special hand mold with the glove core is placed in an oven to dry and baked at 55~70℃ for 15~20 minutes.

[0034] In the above steps, the high-strength compound resin liquid obtained in step one is filtered, vacuumed and degassed in sequence and then placed in the impregnation tank. The thumb and index finger of the glove core and the web of the hand are then impregnated with the resin for 0.3 seconds.

[0035] Step Six: After impregnation with resin, turn the special hand mold over and dry and vulcanize it;

[0036] During the above steps, when flipping the special hand mold, it is necessary to ensure that the adhesive does not flow randomly.

[0037] In the above steps, the drying and vulcanization temperature is 80~110℃, and the drying and vulcanization time is 1~2 hours.

[0038] Step 7: Then demold and allow to cool naturally to obtain nitrile coated gloves reinforced with high-strength composite resin.

[0039] Example 1

[0040] The present invention provides a process for preparing nitrile coated gloves reinforced with high-strength composite resin, such as... Figure 1 As shown, it includes the following steps:

[0041] Step 1: Weigh out nitrile latex, high-solids butadiene latex, chloroprene latex, vulcanizing agent, reinforcing agent and filler in sequence, and mix them thoroughly to obtain a high-strength compound resin solution.

[0042] The weight ratio of nitrile latex, high-solids butadiene latex, and chloroprene latex is 30:10:20; the weight ratio of the three latexes to the vulcanizing agent is 30:1, and the vulcanizing agent is a mixture of nano zinc oxide and water in a weight ratio of 1:2; the reinforcing agent and filler are a composite of graphene oxide and zirconium dioxide.

[0043] Step 2: First, apply a nitrile coating to the front of the palm and fingers of the glove core.

[0044] Step 3: Place the nitrile-coated glove core onto the special hand mold.

[0045] Step 4: Dip the thumb and index finger, as well as the web of the hand, in the treatment solution at a specific angle.

[0046] Step 5: After the treatment solution is dried, immerse the thumb and index finger, as well as the web of the hand, in the high-strength compound resin solution for 0.3 seconds.

[0047] Step 6: After impregnation with the adhesive, turn the special hand mold over and ensure that the adhesive does not flow freely. Then, dry and vulcanize it at 110°C for 1 hour.

[0048] Step 7: Then demold and allow to cool naturally to obtain nitrile coated gloves reinforced with high-strength composite resin.

[0049] The high-strength composite resin-reinforced nitrile coated gloves prepared by the above method have an abrasion resistance cycle of 8100, an abrasion resistance grade of 4, a cut resistance index of 12.4, a cut resistance grade of 4, a tear strength of 81N, a tear resistance grade of 4, a puncture resistance of 157N, a puncture resistance grade of 4, and an adhesive strength of 1.3N / cm.

[0050] Example 2

[0051] The present invention provides a process for preparing nitrile coated gloves reinforced with high-strength composite resin, such as... Figure 1 As shown, it includes the following steps:

[0052] Step 1: Weigh out nitrile latex, high-solids butadiene latex, chloroprene latex, vulcanizing agent, reinforcing agent and filler in sequence, and mix them thoroughly to obtain a high-strength compound resin solution.

[0053] The weight ratio of nitrile latex, high-solids butadiene latex, and chloroprene latex is 35:15:20; the weight ratio of the three latexes to the vulcanizing agent is 40:1, and the vulcanizing agent is a mixture of nano zinc oxide and water in a weight ratio of 1:3; the reinforcing agent and filler are a composite of graphene oxide and zirconium dioxide.

[0054] Step 2: First, apply a nitrile coating to the front of the palm and fingers of the glove core.

[0055] Step 3: Place the nitrile-coated glove core onto the special hand mold.

[0056] Step 4: Dip the thumb and index finger, as well as the web of the hand, in the treatment solution at a specific angle.

[0057] Step 5: After the treatment solution is dried, immerse the thumb and index finger, as well as the web of the hand, in the high-strength compound resin solution for 0.3 seconds.

[0058] Step 6: After impregnation with the adhesive, turn the special hand mold over and ensure that the adhesive does not flow freely. Then, dry and vulcanize it at 90°C for 2 hours.

[0059] Step 7: Then demold and allow to cool naturally to obtain nitrile coated gloves reinforced with high-strength composite resin.

[0060] The high-strength composite resin-reinforced nitrile coated gloves prepared by the above method have an abrasion resistance cycle of 8500, an abrasion resistance grade of 4, a cut resistance index of 12.6, a cut resistance grade of 4, a tear strength of 85.2N, a tear resistance grade of 4, a puncture resistance of 159N, a puncture resistance grade of 4, and an adhesive strength of 1.4N / cm.

[0061] Example 3

[0062] The present invention provides a process for preparing nitrile coated gloves reinforced with high-strength composite resin, such as... Figure 1 As shown, it includes the following steps:

[0063] Step 1: Weigh out nitrile latex, high-solids butadiene latex, chloroprene latex, vulcanizing agent, reinforcing agent and filler in sequence, and mix them thoroughly to obtain a high-strength compound resin solution.

[0064] The weight ratio of nitrile latex, high-solids butadiene latex, and chloroprene latex is 40:20:30; the weight ratio of the three latexes to the vulcanizing agent is 35:1, and the vulcanizing agent is a mixture of nano zinc oxide and water in a weight ratio of 1:2.5; the reinforcing agent and filler are a composite of graphene oxide and zirconium dioxide.

[0065] Step 2: First, apply a nitrile coating to the front of the palm and fingers of the glove core.

[0066] Step 3: Place the nitrile-coated glove core onto the special hand mold.

[0067] Step 4: Dip the thumb and index finger, as well as the web of the hand, in the treatment solution at a specific angle.

[0068] Step 5: After the treatment solution is dried, immerse the thumb and index finger, as well as the web of the hand, in the high-strength compound resin solution for 0.3 seconds.

[0069] Step 6: After impregnation with the adhesive, turn the special hand mold over, ensuring that the adhesive does not flow freely, and then dry and vulcanize it at 100℃ for 1.5 hours.

[0070] Step 7: Then demold and allow to cool naturally to obtain nitrile coated gloves reinforced with high-strength composite resin.

[0071] The high-strength composite resin-reinforced nitrile coated gloves prepared by the above method have an abrasion resistance cycle of 9000 cycles, an abrasion resistance grade of 4, a cut resistance index of 13.4, a cut resistance grade of 4, a tear strength of 89.4 N, a tear resistance grade of 4, a puncture strength of 163 N, a puncture resistance grade of 4, and an adhesive strength of 1.6 N / cm.

[0072] As can be seen from the above three embodiments, the high-strength composite resin reinforced nitrile coated gloves prepared by the present invention not only achieve high adhesion to the adhesive surface and high strength, but also strengthen the thumb, index finger and the web of the hand, thus meeting the requirements of long-term durability and no damage during use.

[0073] The beneficial effects of this invention are:

[0074] (1) The present invention, by immersing the thumb, index finger and the web of the hand in a high-strength compound resin liquid, not only makes the gloves durable and wear-resistant, but also flexible in use, overcoming the defect that traditional gloves with a single nitrile coating on the web of the hand cannot achieve durability, thereby improving the service life of the gloves.

[0075] (2) The present invention has a simple process, is easy to operate, and has high production efficiency. Moreover, its cut resistance, tear resistance and puncture resistance are all at level 4, which can meet the requirements of use.

[0076] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, all modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the technical requirements.

Claims

1. A process for the preparation of high strength compounded resin reinforced nitrile coated gloves, characterized by The method comprises the following steps: Step one: according to the set ratio, sequentially weigh nitrile latex, high solid polybutadiene latex, neoprene latex, vulcanizing agent, reinforcing agent and filler, and fully mix to obtain high-strength compound resin liquid; In the above step, the weight ratio of the nitrile latex, high solid polybutadiene latex and neoprene latex is 30-50:10-20:20-30; In the above step, the reinforcing agent and filler are graphene oxide and zirconium dioxide composite; Step two: first coat the palm and finger parts of the glove core with a nitrile coating; Step three: put the glove core coated with the nitrile coating on a special hand mold; Step four: dip the thumb and index finger of the glove core and the web space with a treatment liquid at a specific angle; Step five: after the treatment liquid is dried, dip the thumb and index finger of the glove core and the web space with a high-strength compound resin liquid; In the above step, after dipping the treatment liquid, place the special hand mold with the glove core in an oven for drying, and bake at 55-70℃ for 15-20min; In the above step, the high-strength compound resin liquid obtained in step one is filtered, vacuumed and defoamed in sequence, then put into the dipping tank, and the glove core is dipped for 0.3s; Step six: after dipping, turn over the special hand mold and dry vulcanize it; Step seven: then demold, and naturally cool to obtain a nitrile-coated glove reinforced by high-strength compound resin.

2. A process for preparing high strength compounded resin reinforced nitrile coated gloves as claimed in claim 1, wherein: In the above step one, the nitrile latex, high solid polybutadiene latex and neoprene latex constitute three kinds of latex, and the weight ratio of the three kinds of latex and the vulcanizing agent is 30-50:1; the vulcanizing agent is a mixture of nano zinc oxide and water in a weight ratio of 1:2-3.

3. A process for preparing high strength compounded resin reinforced nitrile coated gloves as claimed in claim 1, wherein: In the above step six, during the turning over of the special hand mold, the glue liquid should not flow randomly.

4. The process for preparing high strength compounded resin reinforced nitrile coated gloves as claimed in claim 1 wherein: In the above step six, the temperature for drying vulcanization is 80-110℃, and the time for drying vulcanization is 1-2h.

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