초록 ▼

A container especially suitable for bulk materials and including a cardboard tubular sleeve having its lower edge portion positioned in upwardly opening groove means on a plastic pallet. The tubular sleeve is a sleeve assembly comprising inner and outer tubular sleeves respectively formed of first a

A container especially suitable for bulk materials and including a cardboard tubular sleeve having its lower edge portion positioned in upwardly opening groove means on a plastic pallet. The tubular sleeve is a sleeve assembly comprising inner and outer tubular sleeves respectively formed of first and second corrugated cardboard structures with the inner sleeve positioned telescopically within the outer sleeve and with the outer annular surface of the inner sleeve secured to the inner annular surface of the outer sleeve to form a composite sleeve assembly having a thickness approximating the width of the groove means on the pallet. An auxiliary cardboard sheet is secured to the outboard surface of the outer tubular sleeve and an auxiliary cardboard sheet is secured to the inboard surface of the inner cardboard sleeve. A vinyl sheet is adhesively secured to the auxiliary cardboard sheet of the outer tubular sleeve and a further vinyl sheet is adhesively secured to the auxiliary cardboard sheet of the inner tubular sleeve so that, with the inner and outer tubular sleeves telescopically assembled, the vinyl sheets form the inner and outer annular surfaces of the composite sleeve assembly. The vinyl sheets also cover the upper and lower annular end edges of the sleeve assembly so as to make the sleeve assembly substantially moisture impervious. Also disclosed is a method for folding the sleeve assembly into a totally flat collapsed configuration to facilitate storage and shipment.

대표청구항 ▼

A container including a plastic pallet and a tubular sleeve removably supported on the upper face of the pallet to form the container, characterized in that the wall of the sleeve has a sandwich cross-sectional configuration including a plastic layer and a cardboard layer firmly bonded together over

A container including a plastic pallet and a tubular sleeve removably supported on the upper face of the pallet to form the container, characterized in that the wall of the sleeve has a sandwich cross-sectional configuration including a plastic layer and a cardboard layer firmly bonded together over substantially their entire confronting interface. A method of forming a container including a plastic pallet and a tubular sleeve removably supported on the upper face of the pallet, said method comprising the steps of: forming a plastic pallet; providing a cardboard panel structure; bonding a plastic layer to at least one side face of the panel structure to form a laminated panel structure; forming creases in the laminated panel structure and folding the laminated panel structure at the creases to form the laminated panel structure into a polygonal tubular sleeve with the bonded plastic layer on the outside of the sleeve; and positioning the sleeve on the upper face of the plastic pallet. A method of forming a container including a plastic pallet and a tubular sleeve removably supported on the upper face of the pallet, said method comprising the steps of: forming a plastic pallet; providing a first outer strip of corrugated cardboard material including flat inner and outer sheets and at least one corrugated inner sheet; providing a second inner strip of corrugated cardboard material including flat inner and outer sheets and at least one corrugated inner sheet; securing the inner sheet of said first outer strip to the outer sheet of said second inner strip to form a double wall strip having exposed inner and outer faces, top and bottom edges, and a normal thickness equal to the combined thickness of said first and second strip; providing pairs of first and second parallel V-shaped creases in at least one face of said double wall strip at longitudinally spaced locations therealong and extending from the top to the bottom edge of said double wall strip, said pairs of creases defining side wall portions between pairs of creases having a length substantially exceeding the distance between the first and second creases of a crease pair; folding said double wall strip at said locations to form a polygonal sleeve having relatively short angled corner portions between the first and second creases of each pair and relatively long straight side wall portions between each pair of creases; and positioning the sleeve on the upper face of the plastic pallet to form the container.