Mustache Score Segmentation for Pressurized Can Ends

The single mustache score is segmented into multiple scores: a first mustache score with reduced depth, a second mustache score with greater depth, and optionally a third mustache score. This segmentation creates progressive pressure relief stages that can handle highly pressurized containers (25+ psi) without violent explosion, while the shallower first score prevents immediate catastrophic failure.

Different regions of the score pattern have different depths and characteristics. The first mustache score has reduced depth to allow initial controlled venting, while the second mustache score has greater depth to provide additional pressure relief. This local variation in score depth creates zones of different pressure relief capability, enabling safe opening of highly pressurized containers.

Instead of one deep score, the pressure relief function is segmented across multiple scores with varying depths. The shallower first mustache score provides initial controlled venting, preventing immediate catastrophic explosion, while the deeper second mustache score provides additional pressure relief capability. This segmentation allows progressive pressure release that maintains control throughout the opening process.

The first mustache score with reduced depth acts as a cushioning element that absorbs initial pressure release, preventing violent explosion. This shallower score provides a buffer that controls the pressure relief process, allowing gas to escape in a controlled manner before the deeper second mustache score engages for additional pressure relief.