Polythene Bags - The History And Makes Use Of

Polythene Bags - The History And Makes Use Of

Polythene bags (polyethylene bags) were first made within the USA in 1957; they have been used for the packaging of sandwiches, bread, fruits and vegetables. By 1966, virtually one third of bakery products produced within the USA were packed in them. By 1973, the amount of polyethylene bags produced in Western Europe reached almost twelve-million units. In 1982, massive shopping centers began to promote plastic bags with handles (the "T-shirt bags"). By 2002, the total yearly quantity of plastic bags produced in the world reached 5- trillion units.

Types of Polyethylene Bags

1. Clear packaging made of low/high density polyethylene, which serves a protecting perform (protects the merchandise from moisture and filth). The leaders in the production of the finest packages of this type are China and Russia: they produce 5-micrometer-thin polythene bags.
2. T-shirt builders bags made of low-density "rustling" polyethylene or high-density "clean" polyethylene, which obtained their name for the form of their handles. They had been the last to return onto the market, but they secured their positions in supermarkets and retail outlets.
3. Bags with patch and loop handles made of high/medium/low density polyethylene and laminates. They're the most tough to produce. Their handles might be welded or glued.
4. Trash bags made of low/high density polyethylene, or from a mixture. They usually have dyes added to their material. They're available without handles, with "T-shirt"-type handles, or with straps for tying.
5. Branded polythene bags - these often have an organization trademark on them.

Polyethylene

Polyethylene is a thermoplastic ethylene polymer; it is the commonest plastic used in the world. It appears to be like like a waxy white mass (thin sheets are clear and colorless). This materials is chemical and frost resistant; it's an insulator and shock absorber; it softens when heated and solidifies when cooled. People generally confuse it with cellophane - the same material of plant origin.

Polyethylene was invented by a German engineer in 1899, but didn't grow to be widespread back then. It started to turn out to be widespread in 1933 due to the efforts of British engineers. First, it was used for telephone cables; in the 1950's, it began for use for polythene bags in the food industry.

Polyethylene is made by ethylene polymerization. They separate high-density, medium-density and low-density polyethylene. Polyethylene is water-resistant, and doesn't react with alkali, salt solutions, or acids. It undergoes thermal growing older with time.

Polyethylene Uses

- Packaging film.
- Packaging (bottles, plastic boxes, and bottle caps)
- Pipes (for sewerage, drainage, water provide, and fuel supply).
- Insulating material.
- Powder for warm-melt glue.
- Armor for bullet-proof vests.
- Casing for boats and ATVs, components and technical tools, and household items.
- The "ultrahigh molecular polyethylene" is utilized in medicine for joint cartilage replacement.

Environmental Issues

The inexpensiveness of polythene bags leads to the truth that lots of them are used for a very brief time, after which discarded. Each year, there are roughly 5 trillion items used across the world. The millions of tons of plastic trash dumped into the oceans is still a battle that environmentalists are coping with today.

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