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The expanding contents place additional force against the interior of the container.
Carbon dioxide contributes to the pressure already present inside the sealed can.
Because the container cannot safely expand with its contents, stress builds along its walls, seams and opening mechanism.
The damage may not be obvious.
A frozen or partially frozen can can still appear ordinary until it is touched, moved or opened.
Once the metal fails, the stored pressure can release suddenly.
The container may tear apart rather than opening through the tab as expected.
The Child Had No Warning
The boy approached the freezer expecting only a cold drink.
There was no reason for him to view the familiar can as a serious danger.
The container had likely appeared identical to one stored in a refrigerator or cupboard.
Children often learn through routine household behavior.
If they regularly see adults place drinks in the freezer, they may reasonably assume that the practice is safe.
They may also be more likely to hold the container near their face while examining or opening it.
That proximity can increase the severity of an injury if the can ruptures.
The Shanghai incident demonstrates why freezer safety should not depend on a child recognizing a hazard that remains invisible.
Adults must prevent dangerous containers from being placed there and explain why certain items require different storage.
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Thirty-Eight Stitches and a Lasting Scar
The force of the explosion caused significant injuries to the boy’s face.
His hospital treatment required 38 stitches.
Although medical care addressed the immediate wounds, the accident left him with a scar that may remain throughout his life.
The emotional effects can also continue after the physical injuries begin healing.
A freezer and a soft drink can are ordinary objects that children encounter regularly.
Experiencing a sudden injury from something so familiar can leave lasting fear and uncertainty.
For the parents, the knowledge that the accident resulted from an everyday shortcut can be particularly painful.
They had not placed an obviously hazardous object within reach.
The danger was hidden inside a product found in countless homes.
The Risk Is Not Limited to Soft Drinks
Carbonated beverages are among the items that can become dangerous when left in a freezer.
Other tightly sealed containers can create similar concerns if their contents expand or internal pressure rises.
Sealed alcohol containers also require careful handling and appropriate storage.
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Freezing behavior can vary depending on the liquid, but a tightly closed container should not be assumed safe simply because it has not yet broken.
Dry ice presents a different but related pressure danger.
It should never be stored inside a completely sealed container.
As dry ice changes into gas, that gas requires room to escape.
If it is trapped, pressure can build until the container fails.
The common factor is confinement.
Whenever expansion or gas production occurs inside a sealed space, the container can become hazardous.
A Freezer Is Not a Rapid Drink Cooler
Freezers are designed to preserve suitable food and other items at low temperatures.
They should not be treated as universal rapid-cooling devices.
A carbonated beverage may cool quickly inside, but forgetting it creates a risk that exceeds the convenience gained.
Busy households make forgotten items especially likely.
A person may place a can in the freezer intending to remove it after a few minutes, then become distracted by work, a telephone call or another responsibility.
By the time someone remembers, the drink may already be frozen or dangerously pressurized.
Another family member may find it first without knowing how long it has been inside.
That uncertainty is one reason avoiding the practice entirely is safer than relying on a timer or memory.
Safer Ways to Cool Beverages
Carbonated drinks should be cooled in the refrigerator, where temperatures remain above the freezing point of the beverage.
Refrigeration takes longer, but it avoids the expansion associated with freezing.
An ice bucket offers another option when a drink needs to cool more quickly.
The container can be surrounded by ice without being placed in the extreme conditions of a freezer.
These methods may require additional patience or preparation.
They greatly reduce the possibility of a sealed can becoming dangerously pressurized.
The goal is not merely to prevent a messy burst inside the appliance.
It is to protect anyone who might later handle the container without realizing it has been weakened.
What to Do With a Forgotten Can
A can discovered inside a freezer should be treated carefully, particularly if it is swollen, distorted, leaking or frozen solid.
It should not be opened immediately or held close to the face.
The container may already be under abnormal stress.
Moving it roughly, twisting the tab or attempting to puncture it could release the pressure suddenly.
Children should not be asked to remove or examine a forgotten frozen can.
An adult should manage the situation cautiously while keeping other people at a safe distance.
The absence of visible damage does not guarantee that the container is stable.
Internal pressure cannot always be assessed by looking at the outside.
Dry Ice Requires Ventilation