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A plastic bag, poly bag, or pouch is a type of container made of thin, flexible, plastic film, nonwoven fabric, or plastic textile. Plastic bags are used for containing and transporting goods such as foods, produce, powders, ice, magazines, chemicals, and waste. It is a common form of packaging.
Big bags FIBC. A flexible intermediate bulk container (FIBC), jumbo, bulk bag, super sack, big bag, or tonne bag is an industrial container made of flexible fabric that is designed for storing and transporting dry, flowable products, such as sand, fertilizer, and granules of plastic. [1] [2] [3]
A standard flexible intermediate bulk container can hold 500 to 1,000 kg (1,100 to 2,200 lb) and manufacturers offer bags with a volume of 285–2,830 litres (10–100 cu ft). [2] Flexible intermediate bulk containers are made of woven polyethylene or polypropylene or other heavy polymers.
The bag is then tightly sealed, preventing air from entering. [7] The first polyethylene bag is surrounded by a second identical bag, which is also sealed, making it airtight. [7] The double-bagged grain is then sealed inside a third woven polypropylene bag, which provides the mechanical strength for PICS bags. [15]
Woven polypropylene bags are extremely durable and can be used in dry and wet conditions. These bags are best for extreme heavy loads. [citation needed] Poly woven airbags have greater elasticity than paper dunnage airbags for more surface contact with the pallets. The woven material provides greater tear strength and superior moisture ...
Current practices are to use multi-wall paper sacks. Some include a layer of plastic film for barrier properties and insect control. Woven polypropylene bags are also used for high strength; at least one variety (Purdue Improved Crop Storage bags) also includes inner plastic bags.
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