EcoLab's Cleaning Twin Edit
Computer Designed Twin-Container

For cleaning you need the detergent in bulk, but having to handle a bulk container is a crime. Ecolab’s Proforce Cleaners assemble a “work”-spray bottle nicely clicked in the contours of a bulk container. The consumer can refill the spray bottle from the bulk container. The set up provides for a more organized and safer environment as the product is not stored underfoot and dispensing occurs without lifting heavy containers or spillage on the floor. 
The 16-oz (474 ml) spray bottle is extrusion blow moulded from high-density polyethylene. The 1.25-gal (4,73 ltr) container, measuring 7 1/2”x5 1/4”x11 1/2” (18,8 x 13,1 x 28,9 cm), is extrusion blow moulded from high-resistance high-density polyethylene.
Complementing the two bottles, the TwinPack comes with a dispensing spray fitment on the 16-oz spray bottle, and a spigot (used for refilling the smaller bottle) that fits alongside the 16-oz bottle in a “cave” created in the side of the larger bottle. There are also two screw caps on the top, a larger one where the spigot goes to dispense the cleaner, and a small cap that reveals a vent hole.

During the development, the Ecolab team called on Stress Engineering Services (SES) to conduct state-of-the-art stress engineering modelling to help in the design of the bottle and mould. SES also interfaced with TricorBraun, whose role was crucial in last-minute tweaking.
Design studies and computer modelling and simulations were performed to predict problematic areas, and adjustments to the package were made accordingly. A particularly effective feature is the load-locking nubs at the top of each container that fit into corresponding indents in the bottom of the container positioned above it.

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