Sterility, efficiency, and precision: the power of the Blow-Fill-Seal process

 2 min read

Sterile. Single-dose. Practical.

Blow-Fill-Seal (BFS): from process excellence to real-world impact

Discover how Blow-Fill-Seal technology is transforming sterile pharmaceutical manufacturing — from ophthalmology and respiratory products to biologics, vaccines, and orphan medicines.

Download the whitepaper to explore expert insights, real-world use cases, and Unither’s industrial know-how across the entire BFS value chain.


Industrial expertise • Real-world use cases • Expert insights

Why download this whitepaper?

Blow-Fill-Seal goes far beyond a packaging technology. It is a fully integrated aseptic process that directly impacts sterility assurance, cost control, industrial scalability, sustainability, and patient safety.

This whitepaper brings together Unither Pharmaceuticals’ cross-functional expertise — development, quality, regulatory affairs, operations, biologics, and CSR — to deliver a clear, practical, and up-to-date reference on BFS.

  • Understand how BFS works and why it has become a reference standard.
  • Identify the therapeutic areas where BFS creates the most value.
  • Explore the management of complex and temperature-sensitive products (biologics, vaccines).
  • Discover the industrial, economic, and environmental performance drivers of BFS.

What you will learn

1. Understanding the Blow-Fill-Seal process

  • End-to-end process overview: extrusion, blowing, filling, sealing.
  • Rotary vs. linear machines: performance, flexibility, scalability.
  • Polymer selection (LDPE, PP, HDPE, PET) and impacts on safety and recyclability.
  • Regulatory compliance and extractables & leachables (E&L) strategy.

2. BFS serving therapeutic areas

  • Ophthalmology: preservative-free eye drops, sensitive formulations.
  • Respiratory & ENT: inhalation solutions, saline solutions.
  • Injectables & biologics: vaccines, monoclonal antibodies, Euroject®.
  • Orphan drugs: small batches, dose accuracy, vulnerable patients.
  • Topical, cosmetic, and wound care applications.

3. Managing temperature-sensitive products

  • Advanced temperature control during BFS manufacturing.
  • Design of Experiments (DoE) applied to biologics.
  • Limiting thermal exposure and preserving molecular integrity.

4. Key advantages of BFS

  • Sterile: closed, automated process, reduced contamination risk.
  • Single-dose: accurate dosing, patient safety, improved compliance.
  • Practical: portability, ease of use, tangible patient benefits.

5. Economic performance & scalability

  • High-volume production with consistent quality.
  • Reduced components and simplified supply chain.
  • Faster scale-up compared with traditional formats.

6. Innovation & sustainability

  • BFS for next-generation biologics.
  • Euroject®: high-capacity injectable platform, royalty-free.
  • Circular economy case study: LDPE recycling at the Gannat site.
  • Carbon footprint reduction and eco-design.

Who is this whitepaper for?

  • Pharmaceutical companies and biotechs developing sterile liquid dosage forms.
  • R&D, CMC, industrialization, and operations teams.
  • Decision-makers evaluating BFS as an alternative or complement to vials, prefilled syringes, or multidose systems.
  • Organizations seeking scalable, sustainable, and patient-centric industrial solutions.

Why Unither?

With more than 5 billion sterile single doses produced each year, Unither Pharmaceuticals is a global leader in Blow-Fill-Seal, supporting projects from development through to large-scale commercial manufacturing across Europe, the United States, Latin America, and China.

This whitepaper is grounded in real industrial experience, enhanced by insights from Unither’s subject-matter experts.

Do you have a specific project?
Contact our experts to discuss your BFS strategy.