Kaltabschlüsse

Kaltabschlüsse, also known as cold seals or cold closures, are a type of closure mechanism used in packaging. They are designed to create a hermetic seal without the application of heat. This is typically achieved through the use of a pressure-sensitive adhesive or a material that bonds upon contact with itself or another specific surface. The adhesive is applied to the sealing surface of the packaging material, which can be a lid, cap, or film. When the packaging is closed, pressure is applied, causing the adhesive to form a bond and create a seal.

The primary advantage of Kaltabschlüsse is their energy efficiency, as they eliminate the need for heating elements and associated energy consumption. This can lead to cost savings in manufacturing and a more environmentally friendly packaging process. They are also beneficial for heat-sensitive products that could be damaged by high temperatures. Kaltabschlüsse are commonly found in various applications, including food packaging, pharmaceuticals, cosmetics, and consumer goods. Examples include peel-off lids for yogurt cups, tamper-evident seals on bottles, and resealable bags. The effectiveness of the seal depends on the specific adhesive formulation and the surface properties of the packaging materials. Development in this area focuses on improving adhesion strength, barrier properties, and ease of opening for the end consumer.