Caps & Fittings
Caps & Fittings — Valve and Sealing Solutions for Aseptic and BIB Bags
Valve and Sealing Solutions for Aseptic and BIB Bags
Caps and fittings are critical components of liquid flexible packaging, directly affecting dispensing performance, sealing reliability, and user experience. QC Packaging offers a complete range of caps for aseptic bags and BIB bags, covering diverse applications across food, beverage, chemical, and agricultural industries.
Cap Types
Peristaltic Tube Cap
Traditional design with silicone tube. Suitable for low-viscosity liquids like milk, water, thin juice. ~$0.90/unit.
Spiked Adapter Cap
QC Packaging innovation. Replaces peristaltic tube, saves ~$0.40 per bag. Ideal for milk bars and beverage shops. Compatible with 10L aseptic bags.
One-Way Valve
No air intake, maintains negative pressure. Suitable for wine, coffee concentrate, edible oil requiring strict oxygen barrier. Available in 3L-20L.
Large Flip Cap
Wide opening for fast dispensing. Designed for high-viscosity products like concentrated jam, honey, syrup. Minimizes residue.
Base + Screw Cap
Threaded seal for high-leakage-risk applications. Corrosion-resistant materials available for chemical and agricultural liquids.
Selection Guide
| Low viscosity liquids (milk/water/thin juice) | Peristaltic tube cap or Spiked adapter |
|---|---|
| Oxygen-sensitive products (wine/coffee/edible oil) | One-way valve |
| High viscosity products (jam/honey/syrup) | Large flip cap |
| Chemical/agricultural liquids (liquid fertilizer/biological agents) | Base + screw cap, corrosion-resistant |