Packaging and Packing
The wrapping or covering of a product to enclose and protect it for distribution, storage, sale, and use.
One way of preserving perishable items is by setting it in vacuum. Removing all airborne bacteria and mold prevents enzymatic breakdown while removing all oxygen prevents certain organic compounds from oxidizing, staling, or rotting. This is the concept that yielded reduced oxygen packaging (ROP), or vacuum-seal packaging. Food is placed in a plastic bag made of polyethylene, polyester, polypropylene, or another hydrocarbon polymer. These polymers are lightweight, airtight, flexible, and durable for its intended use. The bag is put into a machine that uses vacuum to pull all of the air out and heat-seals the bag to continuously induce vacuum until the bag is reopened.
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A liquid ring vacuum pump works well with industrial applications of reduced oxygen or reduced atmosphere packaging. The pump is typically much stronger than what is required at a single packaging machine, so it is capable of supplying vacuum to multiple machines at once. It provides constant suction so that it evacuates air without giving any opportunity for air to seep in, and it properly sucks moisture out without damaging the pump or hindering its performance. The NC Series single stage conical lobe liquid ring vacuum pump excels with liquid carryover that may come from any food items, and usually lasts for years, if not decades.