Expansionstaschen

Expansionstaschen, also known as expansion bags or bellows bags, are flexible containers designed to accommodate changes in volume or pressure. They are typically made from pliable materials such as rubber, fabric, or specialized plastics, often reinforced to withstand internal or external forces. The core function of an expansion bag is to absorb excess fluid, gas, or other substances, preventing system overpressure or underpressure.

These devices find application in a wide range of industries. In hydraulic and pneumatic systems, they act as accumulators, storing energy and smoothing out pressure fluctuations. In automotive engineering, they are used in suspension systems to provide a more comfortable ride by absorbing shocks. In medical devices, expansion bags can be found in fluid management systems, providing controlled expansion and contraction for drug delivery or waste collection. They also play a role in packaging, where they can be used to create vacuum-sealed environments or to protect fragile contents by absorbing impact. The design of an expansion bag can vary significantly depending on its intended use, with features such as internal membranes, specific material properties, and connection interfaces being tailored to the application's requirements.