Double or Offset Scoring for Doublewall Cases

The scorelines on corrugated fiberboard are made to position and facilitate folds. On most singlewall cases, a single scoreline is enough to create a good fold of the corrugated board.

But with doublewall cases (and singlewall cases with a high edge crush test), single scorelines are not enough to provide a quality fold. The end result could be ill-formed packaging or even damage to packaging machinery. The simple solution is to use a double or offset scoreline.

Using double or offset score lines with doublewall cases provide these benefits:

• A precise fold
• Well-formed cases with panels that lay flat and don’t bulge
• No tearing or stretching
• No crushing of the corrugated walls
• Better tape adhesion
• Reduced stress on packaging machine parts

Double and offset score lines should be used at the fold for the major and minor flaps.