December 5, 2008

• Cap and Neck Bottle or Jar Finishes

  Screw thread cap sizes are generally expressed as two numbers. 
  The first number refers to the cap diameter (in millimetres) and the corresponding Glass Packaging Institute (GPI)/Society of the Plastics Industry (SPI) finish diameter. 
  The second number refers to the height and thread configuration of the closure or finish.
  These are commonly used bottle caps or jar caps and [...]

December 1, 2008

• Glass Jar Closure Application & Terminology

  CLOSURES FOR GLASS CONTAINERS
   
  The glass package commonly used for low-acid and acidified foods is comprised of two separate elements- the glass container and the metal closure. Both are essential for forming a proper hermetic seal. The characteristics of the glass container and closure (also referred to as cap or lid) will be discussed in this [...]