Expert Design

Fastening Technology Guidance

Want to explore innovative approaches that offer a better time-to-market? Design engineers often rely on traditional fastener selection methods. This case study highlights the potential of exploring different technologies.

The company 5M develops and manufactures components for various applications in the transportation industry. For railways, they produce flat and 3D-shaped panels from a lightweight yet high-strength composite material, primarily used for interior linings such as floor panels, side walls, and ceilings.

In general, different fastening technologies could be used to create fastening joints for assembly in this application of laminated polyurethane (PUR).

3 Possible Fastening Technologies

Different types of threaded inserts, including brass inserts, wire thread inserts and key-locking inserts.
Threaded insert technology at Bossard
An overview of different types of rivets, blind rivet nuts and lockbolts.
Rivet technology at Bossard
Various fastening elements for stud welding and ultrasonic welding
Welding technology at Bossard
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Different types of threaded inserts, including brass inserts, wire thread inserts and key-locking inserts.
Threaded insert technology at Bossard
  • Different types of threaded inserts, including brass inserts, wire thread inserts and key-locking inserts.
  • An overview of different types of rivets, blind rivet nuts and lockbolts.
  • Various fastening elements for stud welding and ultrasonic welding

New Way of Creating Fastening Points

5M sought new methods for creating fastening points in their sandwich materials. The existing approach included traditional fasteners. They used adhesives to add a plywood block to accommodate threaded inserts. Compared to the new solution, this was time-consuming, expensive, and prone to errors. Today, they use a LiteWWeight® Double Pin, applied through MultiMaterial-Welding technology into the sandwich panel.

Old assembly process into PUR floor panel
New assembly process into PUR floor panel
Right (new): After drilling holes directly into the sandwich panel, the LiteWWeight® Double Pin is inserted using ultrasound.
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Old assembly process into PUR floor panel
Left (before): The manufacturer used to incorporate a plywood block into the PUR core, laminate it, and drill holes to embed threaded inserts.
  • Old assembly process into PUR floor panel
  • New assembly process into PUR floor panel

Watch the Whole 5M Story

ATE | Sucess Story 5M

MultiMaterial-Welding®: How the technology helped 5M s.r.o. to streamline manufacturing

A male and female sit at a table with a screen displaying a technical drawing. On the table are a physical application, a technical drawing, and several screws. Key visual for Expert Design only.

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