POPAPY is a post card that transforms into a pop-up card
after being heated in a microwave.
The users can enjoy the result of the unexpected transformation.
POPAPY is made from a combination of paper, heat shrink sheet,
and very thin aluminum sheet.
When it is heated in a microwave oven,
the aluminum sheet can provide heat to the heat shrink sheet effectively,
and the heated heat shrink sheet will shrink and the paper will bend then,
the paper model will stand.
"POPAPY" can both surprise the receiver,
and let the sender enjoy the process of sending the card.
We found that the shape after heating
depends on the size of heat shrink tube, aluminum sheet, and the paper
because of the shrinkage ratio, weight, stiffness and elasticity of those materials.
We developed a simulation software based on some formulas and the data.
User can change the size of paper, heat shrink sheet and aluminum sheet
and see the way that the paper transforms during the 10 seconds,
and see the shape and angle after the 10 seconds.
When the size of heat shrink sheet is too small compared to the aluminum sheet,
an error message that says “stripped” will appear.
When the size of aluminum sheet is too large and the system judges the paper figure cannot stand,
“fallen” will appear.
User can know the most suitable size of heat shrink sheet and aluminum sheet for the paper figure.
Please let me know if you are interested.