Using SERFs for heavy loads and long-term applications

Self-engaging reclosable fasteners (SERFs) are highly effective for securing heavy objects in fixed positions over long periods. The type and placement of the fasteners must be carefully considered, however. When a heavy object is suspended, SERFs experience two main types of forces:

• Disengagement forces: pull the fasteners apart.
• Shear forces: try to slide the fasteners against each other.

To counteract these forces, SERFs rely on interlocking engagement elements that keep the fasteners securely closed until they are intentionally released by the user or technician. These engagement elements vary in design, materials and construction, with some SERFs being more effective at resisting disengagement and shear forces than others.

Selecting the right SERFs for your application

Choosing the appropriate SERF and determining how many to use require careful consideration of several factors:

1. Evaluation of forces: Estimate the potential disengagement and shear forces in your application.
2. Design considerations: Factor in additional elements (such as impact, vibration, environmental exposure, aesthetics) and the need for maintenance or replacement.
3. Manufacturing requirements: Consider how much effort is needed to lock the engagement elements and how this will affect your production/manufacturing process.

Balancing these factors allows you to determine the optimum dimensions, quantity and placement of SERFs for your specific needs.

Need assistance?

The Duotec^® product family offers a range of solutions designed to meet various requirements. Explore our website or contact a Binder representative for personalised recommendations and support during your evaluation process.