REMFORM®

Joining technology for plastics

Today, plastics are utilized in areas where metals were the preferred choice just a few years ago. With plastics, it is possible to integrate various processes and functions into a single component and manufacture that component in a single production step.

However, with plastic constructions, you arrive at the point when the manufactured component needs to be connected. Our answer to the necessity for a well-priced and reliable connection is self-tapping direct screw fastenings under the ARNOLD REMFORM® brand. Our thread-rolling screw with its asymmetric thread profile is screwed into a pre-formed boss, resulting in an economical, recycling-friendly assembly, and which can be removed and reinstalled.

Benefits

The choice of thread geometry can have a considerable influence on the quality of the joint. Here, the thread performs two tasks: First, the thread serves as the forming tool when tapping. Second, there is a form-fit connection which the screw cannot loosen by itself.

Characteristics

Improved plastics flow reduces loads on the boss material and ensures a fastener which is suitable for plastics. The high thread engagement with ARNOLD REMFORM® ensures that the cutting surface is substantial. This increases the fastening's over-torque, and the lower load on the boss material allows higher pre-load forces. This creates a durable connection at the maximum residual pre-load force.

Advantages

Compared with insert solutions, REMFORM® saves time and money:

  • No additional joining elements needed
  • No additional insertion process needed
  • No risk to mold tooling, eliminates tilting when closing die
  • Significantly reduced cycle time
  • Asymmetric thread
  • Optimized material flow
  • Minimum tube load
  • Optimum planning security
  • Simple boss design
  • High level of process reliability

Today, plastics are utilized in areas where metals were the preferred choice just a few years ago. With plastics, it is possible to integrate various processes and functions into a single component and manufacture that component in a single production step.

However, with plastic constructions, you arrive at the point when the manufactured component needs to be connected. Our answer to the necessity for a well-priced and reliable connection is self-tapping direct screw fastenings under the ARNOLD REMFORM® brand. Our thread-rolling screw with its asymmetric thread profile is screwed into a pre-formed boss, resulting in an economical, recycling-friendly assembly, and which can be removed and reinstalled.

Characteristics

Improved plastics flow reduces loads on the boss material and ensures a fastener which is suitable for plastics. The high thread engagement with ARNOLD REMFORM® ensures that the cutting surface is substantial. This increases the fastening's over-torque, and the lower load on the boss material allows higher pre-load forces. This creates a durable connection at the maximum residual pre-load force.

Benefits

The choice of thread geometry can have a considerable influence on the quality of the joint. Here, the thread performs two tasks: First, the thread serves as the forming tool when tapping. Second, there is a form-fit connection which the screw cannot loosen by itself.

Advantages

Compared with insert solutions, REMFORM® saves time and money:

  • No additional joining elements needed
  • No additional insertion process needed
  • No risk to mold tooling, eliminates tilting when closing die
  • Significantly reduced cycle time
  • Asymmetric thread
  • Optimized material flow
  • Minimum tube load
  • Optimum planning security
  • Simple boss design
  • High level of process reliability

REMFORM® is a trademark licensed by CONTI Fasteners AG

Simulation
How does direct plastic screw fastening work?

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