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 rubber and plastics. Hermetic … Zobacz więcej The word hermetic comes from the Greek god Hermes. A heremetic seal comes from alchemy in the tradition of Hermeticism. The legendary Hermes Trismegistus supposedly invented the process of making a glass … Zobacz więcej When the glass and the metal being hermetically sealed have the same coefficient of thermal expansion, a "matched seal" … Zobacz więcej Co-fired ceramic seals are an alternative to glass. Ceramic seals exceed the design barriers of glass to metal seals due to superior hermetic performance in high stress … Zobacz więcej Some kinds of packaging must maintain a seal against the flow of gases, for example, packaging for some foods, pharmaceuticals, chemicals and consumer goods. The … Zobacz więcej Typical epoxy resins have pendant hydroxyl (-OH) groups along their chain that can form bonds or strong polar attractions to oxide or hydroxyl surfaces. Most inorganic … Zobacz więcej Sealing solids Glass taper joints can be sealed hermetically with PTFE sealing rings (high vacuum tight, … Zobacz więcej Standard test methods are available for measuring the moisture vapor transmission rate, oxygen transmission rate, etc. of packaging materials. Completed packages, however, involve heat seals, joints, and closures that often reduce the effective … Zobacz więcej Witryna1 lip 2024 · The Standard Test Method for Nondestructive Detection of Leaks in Packages by Vacuum Decay (ASTM F2338 - 09 (2013)) is versatile and can be used on flexible film and inner seals on rigid containers to assess the seal integrity of a water bottle to closure interface. • Bubble emission test.
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