Slipsheet, divider sheet and method for making the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B65D-019/38
B65D-019/44
B32B-003/28
B32B-003/00
B32B-003/30
출원번호
US-0460754
(2012-04-30)
등록번호
US-8652612
(2014-02-18)
발명자
/ 주소
Bazbaz, John
출원인 / 주소
Fresh Pak Corp.
대리인 / 주소
Vinson & Elkins LLP
인용정보
피인용 횟수 :
0인용 특허 :
30
초록▼
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 i
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.
대표청구항▼
1. A slipsheet or divider sheet, comprising: a sheet of extruded thermoplastic material in which a first surface of the sheet comprises a pattern of etched and/or engraved indentations of uniform depth so that the sheet of material is formed with a recessed surface and a uniform raised surface, wher
1. A slipsheet or divider sheet, comprising: a sheet of extruded thermoplastic material in which a first surface of the sheet comprises a pattern of etched and/or engraved indentations of uniform depth so that the sheet of material is formed with a recessed surface and a uniform raised surface, wherein the uniform raised surface is essentially planar, and wherein the uniform raised surface provides an outermost contact surface, wherein the sheet of material has the approximate dimensions of a wooden pallet, except the thickness of the sheet of material is thin compared to the wooden pallet, wherein the sheet of material provides essentially no cushioning effect for a load of goods placed on the sheet of material, and wherein the sheet of material has an edge that can be gripped by a fork-lift vehicle equipped with a push-pull device. 2. The slipsheet or divider sheet of claim 1, wherein the thickness of the slipsheet and/or divider sheet is the same as the thickness of the sheet of material, and wherein the thickness of the slipsheet and/or divider sheet does not exceed about five millimeters. 3. The slipsheet or divider sheet of claim 1, wherein the uniform raised surface is an interconnected grid of ridges. 4. The slipsheet or divider sheet of claim 1, wherein the sheet of material has opposing sides one and two, wherein side one has the uniform raised surface that provides the outermost contact surface, wherein side two has a side two outer contact surface, and wherein the outermost contact surface of side one has a coefficient of friction that is different from the coefficient of friction of the side two outer contact surface. 5. The slipsheet or divider sheet of claim 1, wherein the sheet of material has opposing sides one and two, and wherein side one has a composition of matter that is different from the composition of matter of side two. 6. The slipsheet or divider sheet of claim 5, wherein one composition of matter comprises high density polyethylene and the other composition of matter comprises linear low density polyethylene. 7. The slipsheet or divider sheet of claim 1, wherein the sheet of material has opposing sides one and two, wherein side one has the uniform raised surface that provides the outermost contact surface, wherein side two has a side two outer contact surface and wherein the side two outer contact surface is relatively smooth compared to the outermost contact surface of side one. 8. The slipsheet or divider sheet of claim 1, wherein the sheet of material has opposing sides one and two, wherein the uniform raised surface that provides the outermost contact surface is formed in side one, wherein side one comprises high density polyethylene, wherein side two comprises linear low density polyethylene, and wherein side two is not imprinted by a roller that has been etched and/or engraved. 9. The slipsheet or divider sheet of claim 8, wherein the uniform raised surface comprises an interconnected grid of ridges. 10. The slipsheet or divider sheet of claim 9, wherein the thickness of the slipsheet and/or divider sheet does not exceed about five millimeters. 11. A slipsheet or divider sheet, comprising: a sheet of material for use with a fork-lift 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, wherein indentation are pressed into side one in a manner such that a raised surface on side one is not indented, wherein the raised surface comprises a plurality of ridges, wherein the raised surface provides an outermost contact surface, wherein side two has an outer surface, wherein the sheet of material has a thickness between the outermost contact surface of side one and the outer surface of side two, wherein the thickness of the slipsheet and/or divider sheet does not exceed about five millimeters, and 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. 12. The slipsheet or divider sheet of claim 11, wherein the sheet of material has some rigidity, and wherein the sheet of material is not substantially rigid. 13. The slipsheet or divider sheet of claim 11, wherein the indentations in side one do not protrude substantially from the outer surface of side two. 14. The slipsheet or divider sheet of claim 11, wherein the plurality of ridges comprise an interconnected grid of ridges. 15. The slipsheet or divider sheet of claim 11, wherein side one and side two each have a coefficient of friction, and wherein the coefficients of friction are different. 16. The slipsheet or divider sheet of claim 15, wherein the depth of the indentations is less than the thickness of the slipsheet and/or divider sheet. 17. The slipsheet or divider sheet of claim 11, wherein side two is relatively smooth in comparison with side one. 18. The slipsheet or divider sheet of claim 11, wherein the plurality of ridges comprises two sets of essentially parallel lines, wherein the lines intersect to form square, rectangular or diamond shapes. 19. The slipsheet or divider sheet of claim 11, wherein the sheet of material comprises polypropylene. 20. The slipsheet or divider sheet of claim 11, wherein side one comprises a first composition of matter and side two comprises a second composition of matter, and wherein the first and second compositions of matter are different. 21. The slipsheet or divider sheet of claim 20, wherein one of the first and second compositions of matter sheet material comprises high density polyethylene. 22. The slipsheet or divider sheet of claim 21, wherein the other of the first and second compositions of matter comprises linear low density polyethylene. 23. A slipsheet or divider sheet, comprising: a sheet of material for use with a fork-lift 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, wherein side one has a recessed surface and a raised surface, wherein the raised surface comprises a net-shaped plurality of ridges, wherein the raised surface provides an outermost contact surface, wherein side two has an outermost contact surface, wherein the sheet of material has a thickness as measured through the sheet of material from the outermost contact surface of side one to the outermost contact surface of side two, wherein the sheet of material has a perimeter, wherein the thickness of the slipsheet and/or divider sheet is the thickness of the sheet of material, including its perimeter, and wherein the thickness of the slipsheet and/or divider sheet does not exceed about five millimeters, wherein the recessed surface of side one does not protrude through side two substantially, and wherein the sheet of material can be grabbed by the push-pull device along the perimeter for holding the sheet of material while the platen moves with respect to the sheet of material. 24. The slipsheet or divider sheet of claim 23, wherein the outermost contact surface of side two is smooth in comparison to the outermost contact surface of side one. 25. The slipsheet or divider sheet of claim 23, wherein the outermost contact surface of side one has a lower coefficient of friction than the outermost contact surface of side two so that the platen will slide more easily under side one than under side two while the load of goods is supported on the sheet of material. 26. The slipsheet or divider sheet of claim 25, wherein side one comprises high-density polyethylene, and wherein side two comprises linear low density polyethylene. 27. The slipsheet or divider sheet of claim 23, wherein the sheet of material has a tab adjacent to and inside of the perimeter, wherein the tab is upturned with respect to the rest of the sheet of material so that the tab can be more easily grabbed by the push-pull device than if the tab were co-planar with the rest of the sheet of material. 28. A slip pallet that can be handled by a fork-lift vehicle outfitted with a platen and a push-pull device, comprising: a thin sheet of thermoplastic material having opposing upper and lower sides that have the approximate dimensions of a wooden pallet, wherein the sheet of thermoplastic material is manufactured in a manner such that the lower side of the sheet of thermoplastic material is imprinted to provide a lower outermost contact surface that comprises a continuous grid of ridges for reducing friction between the lower outermost contact surface and the platen, wherein the continuous grid of ridges extends outwardly from the lower side of the sheet of thermoplastic material a substantially uniform distance so that the lower outermost contact surface is a substantially planar surface, wherein the sheet of thermoplastic material is manufactured in a manner such that the upper side of the sheet of thermoplastic material is not imprinted, wherein the upper side of the sheet of thermoplastic material has an upper outermost contact surface that is substantially smooth, and wherein the maximum thickness of the slip pallet is the distance between the lower outermost contact surface and the upper outermost contact surface. 29. The slip pallet of claim 28, wherein the upper and lower sides comprise different compositions of matter. 30. The slip pallet of claim 28, wherein the sheet of thermoplastic material has edges along its perimeter that can be gripped by the push-pull device. 31. The slip pallet of claim 28, wherein the continuous grid of ridges functions such that the lower outermost contact surface slides more easily on a platen of a fork-lift vehicle than does the upper outermost contact surface, and wherein the substantially smooth upper outermost contact surface prevents sliding of cardboard boxes on the upper outermost contact surface better than does the continuous grid of ridges on the lower outermost contact surface.
Frenkel Robert L. (Englewood CO) Weits Ferdinand (Westminster CO) Todor ; Jr. John S. (Arvada CO) Mitchell G. Robert (Morrison CO), Slip pallet with a cushioning effect.
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