IN Brief:
- Chris Warren, managing partner at Fenton Packaging Solutions, has set out the case for bag-in-box pergals in café milk dispensing.
- The format uses a flexible inner bag, outer carton and dispensing connection to deliver bulk fresh milk.
- Packaging use, handling and potential milk savings depend on pack size, refrigeration, equipment and local waste arrangements.
Attributed opinion — based on commentary from Chris Warren, managing partner at Fenton Packaging Solutions.
Fenton Packaging Solutions is advocating greater use of bag-in-box pergals for fresh milk supplied to cafés and high-volume foodservice counters, arguing that bulk dispensing can reduce the number of containers handled during busy shifts. Chris Warren, the company’s managing partner, has outlined the case for comparing pergals with conventional rigid plastic milk containers on packaging use, storage, transport and potential product waste. His commentary considers where the format may offer advantages in day-to-day service, with the outcome depending on the configuration and operating conditions of each outlet.
A pergal uses a flexible inner bag inside an outer carton, with a fitting that connects the pack to dispensing equipment. The bag contains the milk and collapses as product is withdrawn, while the carton provides protection and a convenient form for storing and handling the pack. Fenton lists a 13.6-litre dairy pergal within a wider bag-in-box range that includes three, five, 10 and 20 litres. The volume of a single pack determines how frequently staff have to replace it and how much milk must be used within the supplier’s specified storage and use period.
Warren identifies fewer pack changes as a practical benefit at busy coffee counters. Smaller rigid milk containers may be delivered, stored, opened, emptied and discarded several times during a shift, with staff carrying out each step. A larger connected pergal allows milk to be dispensed from one pack over more servings. Any time saved depends on actual consumption, the fitment and dispensing equipment, and the work involved in cleaning the system between uses.
The flexible bag and protective carton use a different combination of materials from a self-supporting plastic bottle. A fair packaging comparison must cover the combined weight of the bag, fitment, carton and transport materials needed to deliver the same quantity of milk. Fenton sees scope to use less packaging per litre in suitable applications. The scale of any reduction would depend on the specific bottle and pergal configurations being compared and the treatment of their components after use.
Refrigerated storage also changes when individual bottles are replaced with larger cartons. Regular box dimensions may simplify stock organisation, but the pergal must fit the dispensing arrangement and remain within the correct temperature range. A café selling only a modest volume of milk may struggle to use a large pack within the permitted period after connection. Warren’s proposal is therefore most directly applicable where the rate of consumption is high enough for bulk dispensing to match the service pattern.
Warren also points to potential reductions in milk left behind at the point of pack change. The inner bag collapses as liquid is withdrawn and may help extract product that would otherwise remain in a rigid container. Residual milk can nevertheless be held in the bag’s fitment, connector and dispensing lines. Comparing discarded quantities at each changeover provides a practical way to assess how much milk the complete system recovers under normal use.
A connection that stays closed during service can reduce the repeated opening and pouring associated with smaller containers. Fresh milk still requires refrigeration and hygienic management, with dispensing lines, fitments and contact surfaces cleaned as specified for the equipment. The storage life after connection is determined by the milk supplier’s conditions and the complete dispensing arrangement. A sealed bag on its own provides no basis for claiming a longer usable life.
Larger units may reduce the number of individual packs moved through a distribution centre, delivery vehicle and café storeroom. Transport efficiency, however, depends on carton dimensions, pallet configuration and the volume of milk delivered per vehicle movement. Temperature control remains necessary throughout the journey. The relevant comparison is therefore between complete distribution arrangements supplying the same volume of product, including their packaging and handling requirements.
Once emptied, a conventional pergal is generally separated into a flexible bag and a fibre carton. Fenton notes that the carton can enter established paper and board recovery routes, while recycling of the inner bag depends on facilities accepting its material. Food residue, fittings and local collection arrangements affect disposal. The components are typically single use; describing the format as inherently reusable would confuse recyclability and repeated use of a pack.
Warren’s argument is strongest where milk demand is high enough to make bulk dispensing a routine part of service. Under those conditions, fewer container changes can alter staff handling and storage practices, while the actual milk and packaging savings must be measured against the existing bottle system. Choosing the pack size, refrigeration and dispenser layout together is essential: the operational advantage comes from matching the bulk format to the volume served, cleaning procedures and delivery schedule.
