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US 8,178,186 B2Granted
Slipsheet, divider sheet and method for making the same
AssigneeFresh Pak Corp.
InventorJohn Bazbaz
Life of this patent
Estimating the term…
Abstract
The present invention provides a slipsheet and/or divider sheet and a method for making the same, the sheet having an imprint or an embossing that provides a raised planar surface. The raised planar surface preferably comprises a plurality of ridges, crowns or crests, which are preferably arranged in a pattern throughout an upper surface of the sheet. To make the sheet, a die can be etched to have protuberances or bumps, and the die is preferably pressed into a sheet of pliable thermoplastic material. The sheet thus made has a plurality of indentation formed by the protuberances or bumps on the die, and the sheet has a planar outer surface comprising a plurality of ridges, crowns and crests between the indentations.
Claims12
A slipsheet, comprising:
- a sheet of material that functions as a pallet for supporting goods while the goods are transported by a forklift vehicle equipped with a platen and a push-pull device, the sheet of material comprising:
- an upper layer of material, the upper layer having a top surface for contact with the goods;
- and
- a lower layer of material, the lower layer having a bottom surface for contact with the platen of the fork-lift vehicle,
- the bottom surface comprising a recessed surface and a continuous grid of ridges that provides a contact surface, wherein the recessed surface comprises a plurality of indentations arranged in a pattern,
- wherein the upper layer of material and the lower layer of material are different compositions of matter,
- wherein the bottom surface is a low-friction surface so that the platen can slide under the sheet of material,
- wherein the top surface is a high-friction surface compared to the bottom surface, and
- wherein the sheet of material has an edge and a tab along a major portion of the edge so that the push-pull device can grip the tab while the platen slides under the sheet of material.
6 more elements
A slipsheet or divider sheet, comprising:
- a sheet of material for use with a forklift vehicle equipped with a push-pull device and a platen for supporting a load of goods on the sheet of material, wherein the sheet of material has opposing sides one and two,
- side one having an imprinted surface, the imprinted surface comprising a raised surface and a recessed surface, wherein the raised surface lies substantially in a plane and comprises an interconnected grid of ridges, wherein the interconnected grid of ridges provides an outermost contact surface;
- and
- side two having a surface that is not imprinted, the surface of side two being relatively smooth in comparison with the imprinted surface of side one,
- wherein the sheet of material has an edge and a tab along the edge for the push-pull device to grip as the platen slides under the sheet of material,
- wherein the material is thermoplastic, wherein the ridges form cells, and wherein the recessed surface comprises a plurality of indentations with essentially one indentation within each cell, each indentation including a bottom-most surface and a side wall extending between the bottom-most surface and ridges that form a cell wall that surrounds the indentation.
3 more elements
A slipsheet or divider sheet, comprising:
- a sheet of material for use with a forklift vehicle equipped with a push-pull device and a platen for supporting a load of goods on the sheet of material, wherein the sheet of material has opposing sides one and two,
- side one having an imprinted surface, the imprinted surface comprising a raised surface and a recessed surface, wherein the raised surface lies substantially in a plane and comprises an interconnected grid of ridges, wherein the interconnected grid of ridges provides an outermost contact surface;
- and
- side two having a surface that is not imprinted, the surface of side two being relatively smooth in comparison with the imprinted surface of side one,
- wherein the sheet of material has an edge and a tab along the edge for the push-pull device to grip as the platen slides under the sheet of material,
- wherein the ridges comprise two sets of essentially parallel lines, wherein the lines intersect to form a pattern of diamond shapes, and
- wherein the recessed surface comprises a set of discrete oval shapes.
4 more elements
A slipsheet or divider sheet, comprising:
- a sheet of material for use with a forklift vehicle equipped with a push-pull device and a platen for supporting a load of goods on the sheet of material, wherein the sheet of material has opposing sides one and two,
- side one having an imprinted surface, the imprinted surface comprising a raised surface and a recessed surface, wherein the raised surface lies substantially in a plane and comprises an interconnected grid of ridges, wherein the interconnected grid of ridges provides an outermost contact surface;
- and
- side two having a surface that is not imprinted, the surface of side two being relatively smooth in comparison with the imprinted surface of side one,
- wherein the sheet of material has an edge and a tab along the edge for the push-pull device to grip as the platen slides under the sheet of material,
- wherein the recessed surface comprises a plurality of indentations that each have an oval shape, wherein the plurality of ridges comprise a grid of criss-crossed lines that form a pattern of diamond shapes, and wherein essentially each indentation lies within four ridges that form the shape of a diamond.
3 more elements
A slipsheet or divider sheet, comprising:
- a sheet of material for use with a forklift vehicle equipped with a push-pull device and a platen for supporting a load of goods on the sheet of material, wherein the sheet of material has opposing sides one and two,
- side one having an imprinted surface, the imprinted surface comprising a raised surface and a recessed surface, wherein the raised surface lies substantially in a plane and comprises an interconnected grid of ridges, wherein the interconnected grid of ridges provides an outermost contact surface;
- and
- side two having a surface that is not imprinted, the surface of side two being relatively smooth in comparison with the imprinted surface of side one,
- wherein the sheet of material has an edge and a tab along the edge for the push-pull device to grip as the platen slides under the sheet of material, and
- wherein the sheet of material comprises a layer of high density polyethylene and a layer of linear low density polyethylene.
3 more elements
Dependencies are inferred from the claim text.