Differences Between Injection Molding & Blow Fill Seal

Injection Molding Technology + Fill & Seal

  • Two-step process that molds vials then transfers them to the filling line to be filled and heat sealed. (No risk of contact between product and heat)
  • Added flexibility that ranges from small batches at 1,500 vials per hour to full-scale production at 15,000 vials per hour.
  • Smaller dimensions mean machines fit in most existing contract filling environments.
  • Improved end-user experience. Easily switch out or replace damaged, worn, or old parts.
  • Less than half of the cost of traditional BFS machines with the same production capacity.
  • More environmentally friendly and no excessively wasted plastic material.
  • Provides the option for multilayer packaging designs and calibrated drops.

Blow Fill Seal (BFS)

  • One-step process that blows and fills vials at the same time. (Risk of contact between product and heat)
  • Only capable of full-scale production at roughly 10,000 vials per hour without being able to stop the machine. 3 working shifts necessary once started.
  • Large dimensions with a recommended minimum room size of 500-600 square feet.
  • Halted production time due to the changeover of molds.
  • Higher initial financial investment and overall cost.
  • Large amount of plastic waste is cut from the parison and then disposed of.
  • Extremely complex set up, maintenance, and operating instructions that require highly skilled and well-trained personnel.

LF of America uses the most advanced contract filling equipment to fulfill orders big and small. They also manufacture the Pentafill innovative liquid packaging machines and distribute the most highly advanced contract filling equipment available. These unit-dose and automated liquid packaging systems use injection mold technology instead of the “Blow Fill Seal” process. Injection mold technology offers companies various benefits unmatched by blow fill seal machines as shown in the bullet points above.


To request a free product sample or to speak with one of our team members about packaging services or manufacturing contract filling equipment contact our representatives.

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