The BrightPak container protects and dispenses sensitive foods and beverages using direct or indirect pressure or pump systems. Designed by ATMI, Inc., Danbury, Conn., with assistance from Plastic Technologies, Inc., Holland, Ohio, the liner-in-bottle system replaces large glass bottles for photolithography chemicals used to manufacture semiconductors, LEDs and flat-panel displays.
ATMI's double-containment design eliminates bubble formation and particle defects caused by pump and vacuum delivery containers. It also protects the contents from external contamination, accidents (spills) and operator errors. The container is made from two preforms, one for the 4.6-liter, paneled, amber polyethylene terephthalate (PET) bottle and one for the collapsible rigid polyethylene naphthalate (PEN) liner, which holds the product.
However, different resins can be used to meet performance requirements. This 2-piece container assembly fits into a blowmolded, textured, amber PET base cup, which provides a stable base for the bottle's slightly rounded bottom, as well as an area for brand identification. When drive gas is applied between the rigid liner and the bottle, the pressure from the gas causes the liner to collapse, forcing product through a sealed pathway to the dispense tool. The liner must collapse at low pressure without tearing, be compatible with various chemicals and dispense 99% of the product. The bottle around it withstands six times the dispensing pressure (greater than 90 pounds per square inch) to provide a safety cushion.
Filled BrightPak containers pass drop tests ranging from 4-8 feet. Compatible with shipping and storage conditions down to -20°F, the system blocks 99.9% of light in the ultraviolet-to-visible range (190-425 nanometers). Other benefits include 21% more volume versus the 1-gallon glass containers typically used for photolithographic chemicals and reduction of residuals and associated costs for disposal/waste.
Plastic Technologies, Inc.