Residential building equipment | Sunco Spring Co., Ltd.

Self-Closing Door

Sunco Spring’s products are used to generate the closing force of sliding doors.
When you slide a door open and it gently closes on its own—what is actually doing the work behind the scenes is a spring.
This self-closing sliding door mechanism, commonly known as a sliding door closer, is an essential feature in barrier-free environments such as hospitals and senior care facilities.
In recent years, however, expectations have gone beyond simple functionality.

A more comfortable pulling sensation
Natural and smooth door movement
High levels of quiet operation

These added values are now required—and this is precisely where Sunco Spring’s signature smooth and gradual closing force comes into play. As a result, sliding door closers are　installed in the restroom areas of many convenience stores and restaurants.
They are also commonly used at the entrances of smoking areas, where they quietly play another important role: preventing doors from being left open.
Because sliding door closers operate without electricity, they require no electrical wiring or complex installation. They offer lower costs, reduced environmental impact, and a consistently smooth experience for users. This is how the sliding door closer has become one of the representative examples of Sunco Spring’s manufacturing excellence in the residential building equipment field.

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