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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 .
The bag is supplied to the company which will fill it as an empty pre-made bag. The company filling the bag with its product generally removes the tap, fills the bag (with wine, juice or other liquid) and replaces the tap and then the bag is placed in the box.
Some packaging engineers have backgrounds in other science, engineering, or design disciplines while some have college degrees specializing in this field. [4]Formal packaging programs might be listed as package engineering, packaging science, packaging technology, etc. BE, BS, MS, M.Tech and PhD programs are available.
A return, reconditioning, and reuse system can save money on the cost per shipment and can reduce the environmental footprint of the packaging. [ 7 ] [ 8 ] Manufacturing, particularly the automotive industry , has used heavy-duty returnable racks for shipping hoods, fenders, engines, dashboards, etc. from suppliers to final assembly plants.
Packaging also refers to the process of designing, evaluating, and producing packages. Packaging can be described as a coordinated system of preparing goods for transport, warehousing, logistics, sale, and end use. Packaging contains, protects, preserves, transports, informs, and sells.
Testing modified atmosphere in a plastic bag of carrots. Food packaging is a packaging system specifically designed for food and represents one of the most important aspects among the processes involved in the food industry, as it provides protection from chemical, biological and physical alterations. [1]
Computer simulations and finite element analysis are also being used. Some correlations to laboratory drop tests have been successful. [12] Cushion design requires care to prevent shock amplification caused by the cushioned shock pulse duration being close to the natural frequency of the cushioned item. [13]
Transfer molded products are usually thin walled, 1/16" to 3/16", and are the most prevalent type in use today. The process uses vacuum forming and take-off or transfer molds, where the mold is an extremely fine wire mesh in the shape of the upper/exposed surface.