Preparation process of pm2.5 dual-purpose dust protective mask

Abstract

The invention discloses a process for preparing a PM2.5 dual-purpose dust protective mask, belonging to the technical field of occupational hygiene products, including a process for preparing a push-type individual dust protective mask and a process for preparing a pull-type individual dust protective mask. The preparation process of the push-type individual dust protection mask and the preparation process of the pull-type individual dust protection mask are both independently produced by each component and assembled in an assembly line. Push-type individual dust protection mask, including nose bracket, etc., the outer edges of the inside of the nose bracket and the bottom frame are rough and protruding structures; pull-out individual dust protection mask, including outer support pieces, etc., the outer support pieces are respectively connected to the nose The inner sealing layer of the upper part, the inner sealing layer of the right face and the inner sealing layer of the left face are connected; the present invention can provide the workers with a more flexible dust protection method, and has a good dust protection effect in areas with high dust concentration. Places with low dust concentrations can meet the needs of workers for oxygen intake.

Description

Technical field [0001] The invention belongs to the technical field of occupational hygiene products, and particularly relates to a high and low concentration dust protective mask. Background technique [0002] At this stage, there are a large number of workers in China who are exposed to various types of dust, such as silica dust, coal dust, asbestos dust, polyethylene dust, gypsum dust, limestone dust, wood dust, aluminum Dust, hemp dust, welding fume, other dust, etc., on-site investigations found that most of the workplaces have dust concentrations that exceed the requirements of "Occupational Exposure Limits for Hazardous Factors in Workplace Part 1: Chemical Hazardous Factors" (GBZ 2.1-2007) The allowable concentration limit of 47 kinds of dust in the air of workplace. [0003] The on-site investigation found that most of the large-scale enterprises are currently equipped with qualified and sufficient individual dust-proof masks for the operators, but there are few cases whe...

AI Technical Summary

Problems solved by technology

The first problem is that foreign protective products are designed based on the basic face shape of foreigners, which is poorly adaptable to the face shape of Chinese people. When such individual dust-proof products are used to protect against dust, they all adopt the method of increasing the contact pressure between the product and the human face. Guaranteeing the airtightness of the product will cause most workers to feel uncomfortable when wearing personal dust-proof products; the second problem is that the protective products are designed with the basic face shape of foreigners, which does not conform to the facial structure of Chinese people. The fit is poor, and dust can easily enter the protective equipment from the place where the dustproof equipment is not closely attached to the face, which greatly reduces the dust protection efficiency of the protective equipment; the third problem is that the unit price of disposable protective equipment is high and It is difficult to remove, which makes it difficult for operators to take off or wear individual dust-proof articles for ventilation during a short break during work in a harsh on-site environment.

Sultry heat, high concentration of dust and wearing personal dust-proof products for a long time will inevitably lead to a decrease in the oxygen intake of the workers, and high-intensity physical labor will lead to an increase in the oxygen demand of the workers. maintain mild hypoxia

It is difficult for workers to endure mild hypoxia for a long time under high-intensity physical labor, which affects the enthusiasm of workers to wear personal dust-proof products, which leads to workers not wearing personal dust-proof products in accordance with regulations. main reason

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