Production process of knitted impregnated PU (polyurethane) gloves applying methyl pyrrolidone

A technology of methylpyrrolidone and production process, which is applied in the field of production of knitted impregnated PU gloves, can solve the problems of skin irritation, glove factory production, export impact, and inability to effectively reduce production costs, etc.

Inactive Publication Date: 2010-10-06
沙晓林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production of such PU impregnated gloves requires the use of dimethylformamide (DMF) as a solvent, and DMF has high toxicity. If there is DMF residue in the gloves, it will irritate the skin after wearing; at the same time, due to the use of DMF in production As a solvent, it will affect the health protection of employees
Due to the above defects in the use of DMF in PU dipped gloves, the European Union has determined that

Method used

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Embodiment Construction

[0017] The present invention is a kind of knitting impregnated PU glove production process, comprising:

[0018] Dip the knitted gloves into a solution, wherein the solvent is prepared in proportion by polyurethane resin and NMP (methylpyrrolidone); and

[0019] The dipped knitted gloves are treated in a water bath.

[0020] Specifically, in the solution, the polyurethane resin and NMP (methylpyrrolidone) are preferably prepared in a ratio of 1:1.3 to 1:1.8, and the viscosity of the prepared solution is preferably 500 to 600 pers. Controlling the appropriate viscosity makes it easier for the gloves to be removed from the solvent during the production process, improves the adsorption of the solvent, and reduces the workload of subsequent recovery.

[0021] Specifically, the polyurethane resin is synthesized with the participation of methylpyrrolidone. The polyurethane resin obtained by synthesis cannot be directly applied in the production process of the knitted impregnated P...

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PUM

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Abstract

The invention relates to a production process of knitted impregnated PU ( polyurethane) gloves. The process comprises the following steps of: impregnating the knitted gloves into a solvent, wherein the solvent is prepared from polyurethane resin and methyl pyrrolidone according to the proportion of 1.3-1:1.8, and the polyurethane resin is synthesized with the participation of methyl pyrrolidone; carrying out the water bath treatment on the impregnated knitted gloves; drying the impregnated knitted gloves after the water bath treatment, wherein the drying time is 50-60min, and the drying temperature is at 100-110 DEG C; and recycling methyl pyrrolidone in the solvent from the water for the water bath with the vacuum depressurization method. The invention also provides a solvent for the production process of knitted impregnated PU gloves, which is prepared from polyurethane resin and methyl l pyrrolidone according to a certain proportion. Meanwhile, the invention provides gloves produced according to the production process of the knitted impregnated PU gloves.

Description

technical field [0001] The invention relates to a production process of knitted impregnated PU gloves, in particular to a process of using methylpyrrolidone (NMP) instead of dimethylformamide (DMF) as a solvent to produce knitted impregnated PU gloves. Background technique [0002] The safety protective gloves impregnated with PU resin based on knitted liner gloves have become the most popular safety gloves in the international market because of their thinner rubber layer, comfortable wearing, good oil resistance, wear resistance, and low cost. An important product, the production and sales volume has been rising continuously in recent years. However, the production of such PU impregnated gloves requires the use of dimethylformamide (DMF) as a solvent, and DMF has high toxicity. If there is DMF residue in the gloves, it will irritate the skin after wearing; at the same time, due to the use of DMF in production As a solvent, it will affect the health protection of employees....

Claims

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Application Information

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IPC IPC(8): A41D19/015D06M15/37D06M13/402
Inventor 沙晓林
Owner 沙晓林
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