Tips

Plastic chairs commonly have one round hole: 90% use them without knowing the truth

Whether you are enjoying a cup of tea on the sidewalk or sitting on those red and blue plastic chairs, have you ever wondered why there is always a small round hole in the middle of each chair?

Administrator

6 February, 2024

184

Plastic chairs are familiar items to many people: when you were a student, you sat on a plastic chair for morning assembly at the school yard, drank tea on the sidewalk sitting on a plastic chair, and even in the kitchen or bathroom, there are usually a few chairs to sit on and rest…

It’s familiar like that, but have you ever wondered about the small round hole in the middle of the chair surface? Does any plastic chair, whether it’s green or red, round or square, tall or short, have it?

It is not by chance that manufacturers have to spend extra effort to make a small round hole when producing chairs, or to… save material. Many people also think deeply that the hole is created for sitting to prevent stuffiness and to make it easy to… fart, but the main reason is not like that.

Helps in easily taking the chair

Most chairs are designed with a round hole in the middle, we can easily take a chair out of a stack of chairs by putting our hand into the hole and pulling the chair out. This hole helps to balance the pressure, so there is no situation where the chair is sucked back tightly, making it difficult to take without this hole.

Facilitates transportation

When transporting multiple chairs stacked on top of each other, we can thread a string through the holes and fix the stack of chairs, avoiding breakage during transportation.

Chairs with many holes like this will help distribute the load evenly and can easily carry the chair with just one finger compared to chairs without holes. Holding and moving plastic chairs becomes easier, and you can also hold multiple chairs at once.

Allows air circulation in summer

If you sit on a plastic chair for a long time, it can cause stuffiness and discomfort. The hole in the middle of the chair is designed for ventilation and heat dissipation, making us more comfortable to use. At the same time, this also creates a comfortable feeling for you when sitting for a long time on a plastic chair.

Aligns seating posture for children

Amazing tip for mothers who want to correct their child’s sitting posture. Some families even put a stick into the hole to help the child maintain balance while studying. Thanks to the “self-made” tool using the small hole, parents can feel more relieved because their child sits up straight when studying. It is true that “in difficulties, wisdom flourishes,” isn’t it?

Why is it round and not square?

Through many studies, manufacturers have found that squares or most other shapes will concentrate force at the corners, resulting in the chair surface breaking and affecting the user. Meanwhile, circles have no corners, so they have better force distribution. Moreover, manufacturers don’t use oval shapes because circles are simpler and much easier to implement.

We rarely pay attention to the small details on our everyday items. A small hole compared to the size of a plastic chair has such an important role, isn’t it right? That’s why we say, “small but mighty.”

Source: Xe và thể thao (Cars and Sports)