Disposable dust-free nitrile low-halogen gloves and manufacturing method thereof

- Aug 14, 2020-

Background technique:


With the needs of different industries in the market, the variety of disposable gloves is increasing. At present, it has developed from latex gloves and PVC gloves to late nitrile gloves. Nitrile gloves have better adhesion. The malleability, protein-free and anti-allergic properties are favored by more and more customers.


At present, there are many varieties of nitrile gloves, and there are different classification methods. According to the presence or absence of powder, it can be divided into two types: powdered and powder-free. According to the operating environment and the needs of operators, the colors of nitrile gloves are more common in white and blue. However, the aforementioned nitrile gloves cannot meet the needs of users in different industries. For example, the electronics industry has requirements for gloves such as LPC, ion content, surface resistance, and so on. In order to better maintain the performance of electronic devices and prevent corrosion of electronic components during the processing or handling of liquid crystal screens or small electronic components, the halogen content inside the nitrile gloves needs to be limited, and basically cannot exceed 900ppm. However, in order to reduce the stickiness of the glove surface and prevent the glove from sticking during storage or use, the nitrile gloves must go through the process of chlorine washing. At present, most dust-free nitrile 100-level treatment processes generally use two In the process of chlorine washing, one is the chlorine washing in the production of nitrile gloves, and the other is the offline chlorine washing after the nitrile gloves are off the line. The two chlorine washings make the inner and outer surfaces of the gloves reach a clean level. The washing time is mostly about 20 minutes, the process is complicated, the production efficiency is low, and the gloves after chlorine washing will have a large amount of halogen residue, which basically cannot meet the requirements of the electronic industry. In order to reduce the halogen content of dust-free nitrile gloves and improve the cleanliness of nitrile gloves, it is necessary to invent a process for preparing disposable dust-free nitrile and low-halogen gloves with simple operation and low cost.

disposable nitrile glove dipping machine

Technical realization elements:


The problem to be solved by the present invention is to provide a disposable dust-free nitrile low-halogen glove with simple preparation process and low cost and a preparation process thereof.


In order to solve the above problems, the technical solutions adopted by the present invention are as follows:


In the first aspect, the first embodiment provides a disposable dust-free nitrile and low-halogen glove, specifically by hand mold cleaning, first drying, coagulant dipping, second drying, nitrile rubber dipping, Nitrile gloves made of leaching, lip curling, vulcanization, cooling, chlorine washing, neutralization, rinsing, and demoulding are low-halogen gloves prepared by subsequent processing steps; the low-halogen gloves are then washed with hot water and washed with cold water , Ultra-pure cold water washing, spin-drying, drying, and finally prepared into disposable dust-free nitrile and low halogen gloves; the chlorine content in the chlorine washing process solution is controlled at 350-600ppm, and the time of the chlorine washing process is controlled at 0.3 -1min; the hot water washing, hot water at a temperature of 60-90℃, washing for 30-90min; the cold water washing, using cold water at 15-25℃, washing for 40-60min/time, 2 times in total; Pure cold water washing, using 15-25℃ ultrapure water, time is 40-60min/time, 2 times in total.


In the second aspect, the second embodiment provides a process for preparing disposable dust-free nitrile and low-halogen gloves, which specifically includes the following steps: (1) according to hand mold cleaning, first drying, coagulant dipping, second Drying, nitrile rubber dipping, leaching, lip curling, vulcanization, cooling, chlorine washing, neutralization, rinsing, demoulding to prepare low-halogen gloves;


(2) The low halogen gloves prepared in step (1) are washed with hot water, cold water, ultra-pure cold water, spin-dried, and dried to prepare dust-free nitrile and low halogen gloves;


The chlorine content in the solution in the chlorine washing process is controlled at 350-600ppm, and the time of the chlorine washing process is controlled at 0.3-1min; the hot water washing, hot water at a temperature of 60-90°C, washing for 30-90min; Cold water washing, using 15-25℃ cold water, 40-60min/time, 2 times; the ultra-pure cold water washing, 15-25℃ ultrapure water, 40-60min/time, 2 times in total .


The beneficial effects achieved by the present invention are:


The disposable dust-free nitrile and low-halogen gloves provided by the present invention, due to its special production process and subsequent treatment process, reduces a chlorine washing process, greatly shortens the chlorine washing time, and solves the need for chlorine washing. The technical prejudice that a good chlorine washing effect can be obtained within minutes, the halogen residue is reduced on the basis of ensuring the chlorine washing effect, and the time cost of production is reduced. The production process after the chlorine washing is adjusted, and the ultra-pure water washing process is adopted. Reduce halogen residues, on the other hand, improve the cleanliness of nitrile gloves, reaching the level of 100 gloves, and make the halogen content of dust-free nitrile and low halogen gloves less than 900ppm, which can meet the requirements of precision industries such as electronics industry The use of it prevents corrosion of parts during operation and improves the quality of electronic products.


The preparation process of the disposable dust-free nitrile and low-halogen gloves provided by the present invention can be improved on the original production line and put into production. The method of the present invention is simple and can expand production. It not only improves the quality of 100-grade dust-free nitrile products and achieves low halogen On the basis of the original treatment process, the offline chlorine washing process is reduced, the production time is shortened by about 40-90 minutes, and the production efficiency is simultaneously improved.

Technical characteristics:


1. A disposable dust-free nitrile and low-halogen glove, characterized in that it is specifically cleaned by hand molds, first drying, coagulant dipping, second drying, nitrile rubber dipping, leaching, rolling Nitrile gloves made of lip, vulcanization, cooling, chlorine washing, neutralization, rinsing, and demoulding are low-halogen gloves prepared by subsequent processing steps; the low-halogen gloves are then washed with hot water, cold water, and ultra-pure cold water Washing, spin-drying, drying, and finally prepared into disposable dust-free nitrile low halogen gloves; the chlorine content in the chlorine washing process solution is controlled at 350-600ppm, and the time for the chlorine washing process is controlled at 0.3-1min; The hot water washing, hot water at a temperature of 60-90℃, washing for 30-90min; the cold water washing, using cold water at 15-25℃, washing for 40-60min/time, 2 times in total; the ultra-pure cold water washing, Use ultrapure water at 15-25℃ for 40-60min/time, 2 times in total.


2. The disposable dust-free nitrile and low-halogen gloves according to claim 1, wherein the chlorine content in the chlorine washing process solution is controlled at 400-500 ppm.


3. The disposable dust-free nitrile and low-halogen gloves according to claim 2, wherein the time of the chlorine washing process is controlled to be 0.4-0.6 min.


4. The disposable dust-free nitrile low-halogen gloves according to any one of claims 1 to 3, wherein the halogen content of the low-halogen gloves is less than 900 ppm.


5. The preparation process of disposable dust-free nitrile and low halogen gloves according to claim 1, characterized in that it specifically comprises the following steps:


(1) Prepare according to hand mold cleaning, first drying, coagulant dipping, second drying, nitrile rubber dipping, leaching, lip curling, vulcanization, cooling, chlorine washing, neutralization, rinsing, demoulding Low halogen gloves;


(2) Wash the low-halogen gloves prepared in step (1) with hot water, cold water, ultra-pure cold water, spin-drying, and drying to prepare dust-free nitrile and low-halogen gloves;


The chlorine content in the solution in the chlorine washing process is controlled at 350-600ppm, and the time of the chlorine washing process is controlled at 0.3-1min; the hot water washing, hot water at a temperature of 60-90°C, washing for 30-90min; Cold water washing, using 15-25℃ cold water, 40-60min/time, 2 times; the ultra-pure cold water washing, 15-25℃ ultrapure water, 40-60min/time, 2 times in total .


The preparation process of disposable dust-free nitrile and low halogen gloves according to claim 5, characterized in that the chlorine content in the chlorine washing process solution is controlled at 400-500 ppm.


The preparation process of disposable dust-free nitrile and low halogen gloves according to claim 6, characterized in that the time of the chlorine washing process is controlled to be 0.4-0.6 min.


8. The preparation process of disposable dust-free nitrile and low halogen gloves according to any one of claims 5-7, wherein the ultrapure water is 18 Mohm EDI water.

Technical summary

The present invention provides a disposable dust-free nitrile and low-halogen glove and a preparation process thereof, which are specifically composed of cleaning by hand mold, first drying, coagulant dipping, second drying, nitrile rubber dipping, and leaching. Nitrile gloves made of filtration, lip curling, vulcanization, cooling, chlorine washing, neutralization, rinsing, and demoulding are low-halogen gloves prepared by subsequent processing steps; the low-halogen gloves are washed in hot water and cold water, Ultra-pure cold water washing, spin-drying, drying, and finally prepared into disposable dust-free nitrile and low-halogen gloves; the chlorine content in the chlorine washing process solution is controlled at 350-600ppm, and the time for the chlorine washing process is controlled at 0.3- 1min; the ultra-pure cold water wash uses 15-25℃ ultrapure water, the time is 40-60min/time, 2 times in total; the technical scheme provided by the present invention shortens the production time, reduces the halogen residue, and ensures The cleanliness of the product has the characteristics of non-corrosive effect on precision electronic products.