Dual Bottle: A Two-Compartment Bottle for Two Liquids at Once
Carrying two drinks without carrying two bottles
Dual Bottle lets a user carry two different liquids at once in a single, portable unit, without the bulk or hassle of carrying two separate bottles.
The core challenge was enabling that without mixing, while keeping the bottle compact, easy to use, and ready to manufacture at volume through injection molding.
What made this project hard
Two compartments, one bottle
A two-part system that attaches and detaches easily without leaking between chambers.
Leak-proof sealing
A sealing mechanism reliable enough for daily, on-the-go use.
Balanced handling
Weight distribution and grip that stay comfortable even with two full chambers.
From concept to a manufacture-ready bottle
Engineered for production from the first sketch.
Concept Development
A two-part compartment system engineered to attach and detach easily.
Sealing Design
Leak-proof mechanisms incorporated between compartments.
Ergonomics
Weight distribution and handling balanced across two chambers.
DFM for Molding
Full technical detail and assembly guidance prepared for production.
An attachable, detachable two-part system
The bottle was engineered around a two-part compartment system that can be easily attached or detached, the core mechanism the rest of the design was built around.
Leak-proof sealing between compartments
Sealing mechanisms were incorporated to keep the two liquids fully separated, holding up to daily handling rather than just a bench test.
Balanced for everyday carry
Weight distribution and grip were tuned so the bottle stays comfortable to hold and use even when both compartments are full.
Manufacture-ready for injection molding
The final design package included all technical details and assembly guidance needed for production, developed specifically for injection molding.
What shipped
"A practical and stylish everyday solution, delivered manufacture-ready with full technical detail and assembly guidance for production."
Questions We Hear About This Project
How do you keep two liquids from mixing in a bottle that attaches and detaches?
The sealing mechanism between the two compartments was engineered specifically for daily, on-the-go handling, not just a static bench test, since that is when a seal is actually stressed.
Does splitting the bottle into two chambers make it awkward to hold when both are full?
No. Weight distribution and grip were tuned specifically for the two-full-chambers case, since that is the heaviest, least forgiving state the product is ever used in.
Was this designed with injection molding in mind from the start, or adapted afterward?
From the start. The final design package included the full technical detail and assembly guidance a molder needs, developed specifically for injection molding rather than fitted to it after the concept was locked.
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