Industry Knowledge

What Is Lipping in Die Making?

2026-08-27 - Leave me a message

What Is Lipping in Die Making?

In steel rule die making, lipping is a special process used to create a small lip or flange on the end of a steel rule. 

This processed section helps the rule connect securely with the die board or with another rule, depending on the die design and application.

Lipping is commonly used in packaging cutting die manufacturing, particularly when a secure and precise connection between the steel rule and die board is required


Why Is Lipping Important?

A properly formed lip can help:

  • Ensure the cutting edges meet correctly
  • Improve cutting completeness
  • Maintain consistent die-cutting quality

For complex or high-quality packaging dies, accurate lipping can contribute to more stable and consistent die performance.


How Is Lipping Made?

Traditionally, lipping may be performed using a dedicated Manual Lipping Machine

The end of the steel rule is positioned and formed into the required shape.

The lip size and position need to match the die design and the steel rule specification.




2. Pneumatic Lipping Machine

A pneumatic lipping machine uses compressed air to provide the forming force.

Compared with a manual machine, it can offer:

  • Easier operation
  • Reduced operator effort


3. Automatic Rule Bending Machine with Lipping

For higher-efficiency die manufacturing, an automatic rule bending machine with lipping can integrate lipping with other steel rule processing operations.

Depending on the machine configuration, it can combine:

Bending + Lipping + Bridge + Cutting 

This allows the operator to complete multiple processes automatically from the programmed data.


Why Choose Automatic Lipping?

For packaging die manufacturers producing a large number of folding carton or other complex dies, integrating lipping into an automatic bending machine can help:

  • Reduce manual operations
  • Improve processing consistency
  • Increase production efficiency
  • Reduce repeated positioning

Integrate multiple steel rule processing functions into one workflow

For die makers looking to upgrade from manual processing, an automatic rule bending machine with lipping can be a more efficient solution for integrated steel rule die production.


Related Articles

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Why Packaging Printing Companies Are Investing in Automatic Rule Bending Machines for In-House Die Repair?


Why Die Making Shops Are Upgrading to Auto Following System Laser Cutting Machines in 2026?


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