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2. Vacuum packing - Wikipedia

   en.wikipedia.org/wiki/Vacuum_packing

   Double-chamber sealers are typically used for medium-volume packaging, and also have the capability to vacuum seal liquids. The lid generally swings from one side to another, increasing production speed over a single-chamber model. Double-chamber vacuum packaging machines generally have either spring-weighted lids or fully automatic lids.

3. Packaging machinery - Wikipedia

   en.wikipedia.org/wiki/Packaging_machinery

   Double chamber vacuum packer. In addition to purchasing equipment, leasing options are often attractive. [6] Machinery must be compatible with the expected operating conditions. For example, cold temperature operations require special considerations. [7] Some industries must perform periodic washdowns of all equipment. This high pressure ...

4. Vacuum chamber - Wikipedia

   en.wikipedia.org/wiki/Vacuum_chamber

   A vacuum chamber is a rigid enclosure from which air and other gases are removed by a vacuum pump. This results in a low- pressure environment within the chamber, commonly referred to as a vacuum . A vacuum environment allows researchers to conduct physical experiments or to test mechanical devices which must operate in outer space (for example ...

5. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

   www.aol.com

   AOL latest headlines, entertainment, sports, articles for business, health and world news.

6. Hermetic seal - Wikipedia

   en.wikipedia.org/wiki/Hermetic_seal

   A hermetic seal is any type of sealing that makes a given object airtight (preventing the passage of air, oxygen, or other gases). The term originally applied to airtight glass containers but, as technology advanced, it applied to a larger category of materials, including metals , rubber , and plastics .

7. Vacuum flask - Wikipedia

   en.wikipedia.org/wiki/Vacuum_flask

   Diagram of a vacuum flask Gustav Robert Paalen, Double Walled Vessel. Patent 27 June 1908, published 13 July 1909 Patent 27 June 1908, published 13 July 1909 The vacuum flask was designed and invented by Scottish scientist James Dewar in 1892 as a result of his research in the field of cryogenics and is sometimes called a Dewar flask in his honour.