What are the classification of life jackets made of life jackets?

Life jacket materialThe life jackets are classified as follows:

1. Marines

1. Marine life jackets (marine children's life jackets) are suitable for all kinds of people in the ocean, coastal and inland rivers. The buoyancy of the life jacket is greater than 113n. After the life jacket is immersed in water for 24 hours, the buoyancy loss of the life jacket shall be less than 5%. Life jacket material: polyethylene foam. The new marine life jacket is a new life jacket material designed and manufactured according to the requirements of IMO msc207(81) and msc200(80), which was implemented on July 1, 2010.

2. Life jackets for offshore work are suitable for all kinds of personnel in coastal and inland river operations. The buoyancy of life jacket is more than 75n.

Leisure life jackets: some are also called water sports life jackets. The life jacket material is mainly made of neoprene composite material, with various colors and fashionable and beautiful appearance. Mainly suitable for water play, learning swimming, rafting, fishing and so on.

2. marine uses

Marine life jackets are usually used. The inside is made of EVA foam material, after compression and 3D molding, the thickness is about 4cm.

Use color of life jacket materials: bright colors or colors with fluorescent components on life jackets will stimulate the optic nerve. It may be related to the wavelength of this color, which is easily accepted by the human eye and is not easily confused by other colors. This will be more prominent. Once an accident occurs, it is easy to find and rescue as soon as possible.

3. Airlines

The inflatable life jacket is to pull the pull rope on the inflation device, so that the pull rod rotates not less than 90 degrees, the needle pierces the diaphragm in the high-pressure gas cylinder, the high-pressure carbon dioxide gas flushes into the airbag, and the gas expands to generate buoyancy, so as to achieve the purpose of saving lives.

The inflatable life jacket is mainly composed of a sealed inflatable vest airbag, a miniature high-pressure gas cylinder and a fast inflation valve. It is often used in work where it may fall into the water. Under normal circumstances (not inflated), the entire inflatable life jacket is tied to the body like a belt, hanging on the shoulder and back of a person. Due to its small size, it does not hinder people's freedom of operation; once you fall into the water and encounter danger, you need buoyancy in an emergency, you can automatically expand and inflate according to the action of water, or pull the cable on the inflation valve, you will The inflation is completed within 5 seconds, generating 8~15kg of buoyancy, lifting the human body, exposing the head and shoulders of the person who accidentally fell into the water, and obtaining safety protection in time.

4. hanging neck type

Before inflation, it was like a vest. When falling into the water or there is danger in the water, open the manual valve and quickly inflate within 5 seconds, and the human body floats to the water to save lives. The life jacket has a mouthpiece that can also blow air. In case of danger, open the manual valve, fill the high-pressure gas in the cylinder into the life jacket, and quickly inflate the vest to form an airbag, which can generate 10kg buoyancy in the water and make the human body float on the water.