Reiitetyt

Reiitetyt is a Finnish term used to describe materials that have been perforated with a regular array of holes. The word refers to sheets, panels, or meshes in which holes are created to achieve a defined open area and specific mechanical or acoustic properties. In Finnish language usage, reiitetty means perforated, and reiitetyt serves as the plural form of the modifier when describing multiple items.

Etymology and usage context: the concept derives from the verb reiittää, meaning to perforate. Reiitetyt describes objects that have undergone a perforation process and are typically compared by hole size, pattern, pitch, and open area. The term is common in manufacturing, architecture, and design discussions in Finnish-speaking contexts.

Patterns and fabrication: perforations come in various shapes, with circular holes being the most common, followed by square, hexagonal, or elongated slots. Patterns can be arranged in a regular grid or a staggered layout. Open area percentage depends on hole size, pitch, and hence thickness of the material. Reiitetyt parts are produced by punching (stamping), laser cutting, or chemical etching, with additional finishing to remove burrs and protect surfaces.

Materials and properties: reiitetyt products are made from metals such as steel, stainless steel, aluminum, brass, and copper, as well as plastics and composites. Perforation reduces weight, alters stiffness, and increases airflow or light transmission, while potentially reducing strength at the perforation sites. Durability, corrosion resistance, and edge quality are important design considerations.

Applications: commonly used in architectural façades and sunscreens, acoustic panels and diffusers, filters, screens, and speaker grilles, where the combination of lightness, visibility, and ventilation is advantageous.