DS Smith Brand Logo: Rapak

Bag-in-Box for Post-Mix Syrup /Soft Drinks

Bag-in-Box packaging for dispensing fountain drinks with Rapak’s high quality bags and line-side connectors ensures soft drinks are served quickly, safely and economically without leaks or spills.

Why is Bag-in-Box for Post-Mix a better option?

Product Preservation

  • Maintain safety and freshness by protecting against exposure to air

Storage & Logistics

  • Easier and more efficient storage and easy to transport


  • Works in any dispensing system
  • Reduce product waste with high portion yield
  • User-friendly packaging and dispensing


  • 100% recyclable box

Bags and Films for Post-Mix Bag-in-Box

Rapak’s high quality bags and connectors ensure every drop of post-mix syrup is dispensed from the bag without leaks or spills. Rapak offers a wide range of film options for post-mix including METPET, EVOH with PE and Biaxially-oriented Nylon (BON) laminated structures.  Rapak bags are available in 7, 10L, 12 and 20L (3G and 5G) with custom sizing options available. 

All our products are EU and FDA approved for direct food contact and free from phthalates, heavy metals and Bisphenol A.

Recommended durable bags for Post-Mix dispensing that can reliably survive a 40” drop test:

DuraBev™ Bags: Highly puncture resistant embossed film bag, featuring evacuation performance in excess of 99.4% 


EvacuStrip™ Bags: Dip strip technology bag, with evacuation at any Bag-in-Box orientation, including vertically situated boxes with evacuation at the topof the box. Evacuation performance in excess of 99.6%. 

Download the data sheet. 

Line Side Connectors and Fitments for Post-Mix Syrup

Rapak offers universal fitments and line-side connectors to easily and effectively dispense post-mix syrup into soft drink fountain machines.

PCSS BIB Connecting System


<p>PCSS+™ BIB Connecting System for Post-Mix Syrup and Juice</p> <p>The PCSS+ line side connector is a user-friendly and universal screw-on system for connecting Bag-in-Box post-mix syrup or juice to commercial dispensing machines. The PCSS+ is NSF approved.</p> <p>Also available in Blue &amp; White, specially made for Edible Oil and oil-based products. Ask about our REOS connector.</p>
Unique Connecting System Post-Mix Syrup


<p>The Unique line side connector is a screw-on system for connecting Bag-in-Box post-mix syrup to soda fountain machines. It is available in 6 color variants for market or region differentiation</p>
Univalve Connector


<p>The Univalve Connecting System is a dispensing option when connecting BIB post mix syrup to soda fountain machines.</p>

Filling Machines for Post Mix

Bag-in-Box, a more sustainable packaging option

Bag-in-Box is a more sustainable alternative to other forms of packaging, enabling carbon reductions, cost savings and efficiencies in our customers’ supply chains.  Bag-in-Box has excellent environmental credentials‒ as confirmed by Life Cycle Assessment (LCA) ‒ as it is easier to transfer, store and dispose of in regular waste collections.

Find out more about Bag-in-Box sustainability and LCA