face shields for covid 19

Face shields

Protective masks are used to protect the face and neck from flying metal debris, harmful gases, liquid splashes, metal and high-temperature solvent flying damage. There are mainly welding masks, anti-impact masks, anti-radiation masks, anti-smoke and gas masks and thermal insulation masks.
Introduction
In industrial production, people’s faces are often injured by high-speed particles, molten metals, chemical liquid splashes, and harmful light, and various protective masks must be used for protection.
There are many types of protective masks, but they can be roughly divided into four types according to their uses: anti-impact masks, anti-corrosive liquid splash masks, dust, smoke and various toxic gas masks, and radiation shields Set the observation window.
During use, the protective mask should be clean, transparent, and free from scratches and cracks. The connection between the mask and the hat rack should be firm. The straps of the hat rack should be suitable for adjustment, so that it is properly tightened, safe and comfortable to wear on the head. Butterfly nut function should be good, can fix the mask in a suitable viewing position

Architecture
1. Cap body
The cap body is located in front of it and has a wide brim.
2. Fixing hole
There are no fixing holes on both sides of the cap body, and circular teeth are provided on the periphery of the fixing holes.
(1) Head ring
The head ring is located in the center, which plays a role in comforting the head.
(2) Fixing piece
The end of the fixing piece is provided with a buckling part that can be twisted forward, the buckling part is provided with a protrusion, and a groove corresponding to the protrusion is provided on the fixing piece.
(3) Ear muffs
The earmuff is fixed to the support frame, and a chute is provided on the top edge of the earmuff, and a locating groove is provided on the chute.

Types

1. Welding mask
It is composed of observation window, filter, protective sheet and face mask, etc. It has anti-spatter, harmful light and heat insulation performance. There are multiple types of head-mounted, hand-held, half-mask, and full-face mask polices’ suitable for welding operations with thermal radiation.
2. Shockproof mask
It is used to protect the impact of flying objects, chemical liquid splashes, etc., and is mostly used in operations such as turning, milling, planing, grinding, and rock drilling.
3. Heat-proof and radiation mask
It is composed of a mask and a headband. Commonly used are heat shields with metal mesh and coating, which are used more in melting, furnace and high temperature operations

Precautions
① Check all parts of the mask for obvious scratches, cracks, scratches, or abnormal appearance.
②Check all parts of the mask for loose screws or loose parts.
③Because there is a gap between the protective mask and the face, the protective glasses can also be used together with the protective mask.
④ When working with a welding mask, in order to prevent the sparks from damaging the body, do not stop using it halfway.
⑤ When using fireproof and heatproof masks, you must confirm whether there is harmful light, and if so, they should be used together with lightproof glasses

face shields for covid 19