PVC disposable glove and manufacturing process thereof

Abstract

A type of PVC related disposable gloves and the manufacturing process thereof. The process includes: The PVC resin or its mixture is mixed with a plasticizer to form a glove formula mixture. The films of glove material mixture are formed with the said glove formula mixture. Two layers of the said films of glove material mixture are placed in parallel to form the glove material films. An insulation layer is placed on one side of the glove material films, and a beam of electromagnetic waves is applied and distributed along a path of preset contour onto the surface of the glove material films so that the electromagnetic beam penetrates the glove material films and, as a result, the two layers of the glove material films are effectively sealed and joined along the path of preset contour; or thermal heat is applied and distributed along a path of preset contour onto the surface of the glove material films so that the heating temperature is equal to or higher than the critical point of heat sealing temperature of the glove material films and, as a result, the two layers of the glove material films are effectively sealed and joined along the path of preset contour. Pressure is applied on the glove material films along the path of preset contour so that the two layers of the glove material films are fused integrally along the path of preset contour. A cutting edge is applied along the outer path of preset contour, and the inner part of the path of preset contour including the fused part is separated from the glove material films, while an opening at the wrist is cut, so that a piece of the PVC related disposable glove is formed. This manufacturing process of PVC related disposable gloves greatly reduces environmental pollution and has a very high value for protecting the environment.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of U.S. patent application Ser. No. 15 / 100,719 filed on Jun. 1, 2016, which is a 371 of International Application No. PCT / CN2014 / 093395 filed on Dec. 9, 2014, which claims the benefit of Chinese Patent Application Nos. 201310666737.2 filed on Dec. 10, 2013, 201310669629.0 filed on Dec. 10, 2013, 201320806940.0 filed on Dec. 10, 2013, and 201320807803.9 filed on Dec. 10, 2013, the contents of which are incorporated herein by reference in their entirety.FIELD OF INVENTION[0002]The present invention relates to the field of disposable gloves, particularly, PVC (polyvinyl chloride) related disposable gloves and its manufacturing process.BACKGROUND OF THE INVENTION[0003]PVC related disposable glove is a widely used everyday product. PVC Related Disposable gloves refer to the disposable gloves that are made with a PVC resin mixture, a mixture of PVC resin and other materials, as the raw materials. The other mat...

AI Technical Summary

Benefits of technology

[0018]The objective of the present invention is to provide the PVC related disposable gloves and a new manufacturing process, which can eliminate the air pollution and improve the working environment for the workers, and to reduce production costs of The PVC related disposable gloves.

Problems solved by technology

It is a typical outdated manufacturing process with high pollution and high labor intensity.

The disadvantage of this conventional process is using large amounts of a type of oil as the solvent or “viscosity modifier” added into the paste of material mixture.

This is the so called volatile organic compounds (VOC) which forms smog and causes serious air pollutions.

It is extremely difficult and financially impossible to effectively recover these contaminants with the existing technologies.

This pollutant is also very difficult to degrade in the atmosphere.

This VOC pollutant floating in the air reacts with sulfuric acid and nitric acid to form haze or smog and PM2.5 particles which cause great harm to human health.

At the same time, the solvent oil or viscosity modifier completely evaporated in the oven of this conventional manufacturing process of the PVC Disposable gloves represents nearly 20% the total cost of the gloves.

The high-speed operation of the production line driven by the former chain makes the operators always work in a high intensive way.

In the summer, the heat emission from the ovens makes the operators working in extremely harsh environment at the room temperature up to 50° C. that heatstroke occurs frequently among the operators.

This outdated manufacturing process for PVC disposable gloves exists all over China this way without any principle changes till today, resulting in large amounts of pollutions and other series of disastrous consequences in the society.

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