초록 ▼

A machine for forming a packing material by positioning a paper material on or adjacent to a die member and forcing a multitude of cutting blades completely through the paper material and into the die member at a multitude of spaced apart locations to form a multitude of slits in the paper material.

A machine for forming a packing material by positioning a paper material on or adjacent to a die member and forcing a multitude of cutting blades completely through the paper material and into the die member at a multitude of spaced apart locations to form a multitude of slits in the paper material. These slits allow the paper material to be pulled or expanded into a three dimensional shape that is both load bearing and resilient. In a first embodiment, the forming of the packing material is carried out in a flat die press, including upper and lower die members and with the cutting blades secured to the upper die member. In a second embodiment, the forming of the packing material is carried out in a rotary press including upper and lower rotatable rollers and with the cutting blades secured to the upper roller.

대표청구항 ▼

A die press for forming a multitude of spaced apart slits in a flat, thin paper material, comprising: a lower die member including an upper portion for supporting the paper material, and having a hardness less than 200 Brinell; an upper die member disposed above the lower die member; and a multitude

A die press for forming a multitude of spaced apart slits in a flat, thin paper material, comprising: a lower die member including an upper portion for supporting the paper material, and having a hardness less than 200 Brinell; an upper die member disposed above the lower die member; and a multitude of cutting blades secured to the upper die member and having a hardness greater than C53 on the Rockwell scale; wherein the cutting blades are arranged in a series of parallel rows, and in each of said rows, the cutting blades are spaced apart along the row; wherein the cutting blades form the multitude of spaced apart slits in the paper material and form a multitude of spaced apart recesses in the upper portion of the lower die member, said recesses are aligned with and receive said cutting blades to facilitate movement of the cutting blades completely through the paper material; and whereby the cutting blades cut completely through the thin paper material over substantially the entire length of each slit and the formed slits facilitate expanding the paper material from the flat, thin shape into a honeycomb shape.