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If you’ve noticed two circles instead of one, here’s why:
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Double Reinforcement – Extra stability for larger jugs (like gallon sizes).
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Machine Grip Points – Helps automated filling equipment hold the jug securely.
Did You Know? Milk Jugs Used to Be Glass!
Before plastic took over in the 1960s, milk was delivered in heavy glass bottles. The switch to plastic:
✔️ Made containers lighter & cheaper
✔️ Reduced breakage risks
✔️ Allowed for innovations like the stability dent
Final Thought: Small Design, Big Impact
Next time you grab a milk jug, take a second to appreciate that tiny but mighty dent—it’s a masterpiece of practical engineering hiding in your fridge!
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