Pyramid knife

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A pyramid knife or cross knife is a device for opening textile containers from which bulk goods are removed (e.g. big bags ).

Since the packaging is destroyed by the opening process, the pyramid knife is only suitable for disposable packaging. Furthermore, due to the destruction, the container can only be opened once.

The construction usually consists of four knife-like struts that meet at a point. When placing the container , a cut is carried out without any manual intervention, by the pyramidal cross-sectional geometry, a mold for an underlying hopper result, then the bulk material can be taken out through the.