Lämpöperforointi

Lämpöperforointi, also known as heat perforation or thermal perforation, is a manufacturing process used to create a series of small holes or perforations in materials, typically films and foils, by applying localized heat. This process is distinct from mechanical perforation, which uses sharp objects to create holes. In lämpöperforointi, a heated tool, often a heated wire, needle, or roller with precisely shaped protrusions, is brought into contact with the material. The heat causes the material to melt or vaporize at the point of contact, creating a clean and often sealed edge around the perforation.

The size, shape, and spacing of the perforations can be precisely controlled by the design of the heating element and the speed of the process. This allows for a high degree of customization depending on the application's requirements. Lämpöperforointi is commonly employed in the packaging industry for products such as food wrappers, coffee bags, and breathable films, where controlled ventilation or ease of opening is desired. It is also used in the production of hygiene products, medical supplies, and certain types of textiles. The advantages of lämpöperforointi include its speed, precision, and the ability to create sealed edges that can prevent material fraying.