초록

A severing blade comprising a plurality of spaced-apart sharp piercing teeth disposed below and between a plurality of spaced-apart blunt projections, the blunt projections being adapted to stretch and/or thin a segment of a sheet material, such as stretchable film, to be severed.

대표청구항 ▼

A dispenser box adapted for receiving a rolled-sheet of material, said box comprising a container compartment having side, end and bottom walls and a cover for the walls, a blade disposed on the dispenser box so that portions of the sheet material can be dispensed from the box and severed across the

A dispenser box adapted for receiving a rolled-sheet of material, said box comprising a container compartment having side, end and bottom walls and a cover for the walls, a blade disposed on the dispenser box so that portions of the sheet material can be dispensed from the box and severed across the blade, the improvement comprising said blade having a plurality of spaced-apart piercing teeth and a plurality of spaced-apart blunt projections which extend higher than the piercing teeth and are dispersed among said sharp piercing teeth so as to provide means for stretching and/or thinning a segment of the sheet material to be severed.