heat-sealing device

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• Vertical form fill sealing machine — This is a type of automated assembly line product packaging system, commonly used to in the packaging industry for food, and a wide variety of other products. The machine constructs plastic bags out of a flat roll of plastic film, while… …   Wikipedia

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• End face mechanical seal — An end face mechanical seal, also referred to as a mechanical face seal but usually simply as a mechanical seal, is a type of seal utilised in rotating equipment, such as pumps and compressors. When a pump operates, the liquid could leak out of… …   Wikipedia

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