초록 ▼

A method for forming a corrugated paperboard and a container made therefrom is provided. The corrugated paper is formed with a first layer of flat paperboard to which a second layer of contoured paperboard is attached. The contoured layer of paperboard is further formed with a plurality of flutes, e

A method for forming a corrugated paperboard and a container made therefrom is provided. The corrugated paper is formed with a first layer of flat paperboard to which a second layer of contoured paperboard is attached. The contoured layer of paperboard is further formed with a plurality of flutes, each flute including a first flute tip and a second flute tip, the flute being substantially vertical at the midpoint between the flute tips. The method of forming the corrugated paperboard container comprises placing the corrugated paperboard into a stamping dye which has a male dye portion and a female cavity shaped in the shape of which the paperboard is to be formed. The paperboard is then pressed between the dye and the cavity to apply a pressure to the paperboard. Heat is also applied to the paperboard simultaneously with the application of pressure. The dye is then removed from the cavity and the paperboard container is formed. The paperboard container is formed from a continuous sheet of paperboard, and no cuts are made in the paperboard when forming the paperboard container.

대표청구항 ▼

A container formed as a unitary construction by stamping corrugated paper, said container comprising: a first compartment having a base and sidewalls integrally formed therewith; a second compartment having a top and sidewalls integrally formed therewith; hinge means integrally joining said first co

A container formed as a unitary construction by stamping corrugated paper, said container comprising: a first compartment having a base and sidewalls integrally formed therewith; a second compartment having a top and sidewalls integrally formed therewith; hinge means integrally joining said first compartment and said second compartment to allow said upper and lower compartments to move relative to each other about said hinge means; said first compartment, second compartment and hinge means being formed of a single, uncut sheet of paperboard, said paperboard having a flat layer and a contoured layer, said contoured layer consisting of a plurality of flutes spaced regularly from each other, each said flute including an upper curved surface having an upper flute tip and a lower curved surface having a lower flute tip forming a contoured layer and having a midpoint therebetween, a flute rise being formed between said upper and lower surfaces, the flute rise between each of said upper flute tips and said lower flute tips being substantially vertical at the midpoint between said flute tips, said upper and lower curved surfaces of said contoured layer providing increased strength and rigidity using less paperboard, said contoured layer having 6 to 12 ridges per inch.