High friction package retainer

• US 5,339,957 A
• Filed: 03/08/1993
• Issued: 08/23/1994
• Est. Priority Date: 03/08/1993
• Status: Expired due to Fees

• Current Assignee: Key Tech Corporation
• Original Assignee: Key Tech Corporation
• Inventors: Carstens, Ronald
• Primary Examiner(s): Gehman, Bryon P.
• Application Number:
  US08/027,806
• Time in Patent Office: 533 Days
• Field of Search: 206/386, 206/597, 206/499, 106/36, 428/141, 428/359, 428/493, 428/496, 427/208, 53/157, 53/445, 156/327
• US Class Current: 206/386
• CPC Class Codes: B65D 21/0224 Auxiliary removable stacking elements other than covers
• CPC Class Codes: B65D 2571/00067 Local maintaining elements, e.g. partial packaging, shrink packaging, shrink small bands
• CPC Class Codes: B65D 57/003 for horizontally placed articles, i.e. for stacked or nested articles
• CPC Class Codes: B65D 65/42 Applications of coated or impregnated materials
• CPC Class Codes: Y10T 428/3183 Next to second layer of natural rubber
• CPC Class Codes: Y10T 428/31841 Next to cellulosic

Abstract

In order to stabilize stacks of cartons of consumer products which have ultra-low friction, glossy, point of sales graphics surfaces, on a pallet, without having to package the cartons in an outer container such as a corrugated cardboard box or the like, high-friction tie sheets are used between each superimposed layer of the carton. Each tie sheet has opposed ultra-high friction surfaces with a coefficient of friction of at least 0.8, up to 0.9 or even higher to itself.

Claims

1. A stack of cartons each having a glossy printed outer surface with a slip angle relative to a same surface of less than of about 18°

, the stack comprising at least first and second superimposed layers of said cartons, and a tie sheet interposed between the cartons in each adjacent layer to minimize sliding therebetween, said tie sheets each having upper and lower surfaces each having a coefficient of friction of at least 0.8 relative to a same surface, the slip angle between the outer surface of said cartons and its juxtaposed tie sheet surface being in excess of 18°

.

2. The stack of claim 1, further comprising a pallet underlying and supporting the lowermost layer of said cartons.

3. The stack of claim 1 wherein said cartons have an outer surface with a slip angle of no more than 14°

relative to a same surface.

4. The stack of claim 1 wherein the slip angle between the outer surface of each said carton and its juxtaposed tie sheet surface is about 22°

.

5. The stack of claim 1 wherein each of said tie sheets includes a substrate comprising a paper board selected from the group consisting of chipboard and linerboard.

6. The stack of claim 5 wherein said substrate is chipboard sized to a standard 10 minutes water drop test.

7. The stack of claim 5 wherein said substrate is linerboard having a weight of from about 26 to about 90 pounds per thousand square feet.

8. The stack of claim 1 wherein each of said tie sheets comprises a substrate of sheet material coated on each surface with a pressure-sensitive latex.

9. A stack of cartons each having a glossy printed outer surface with a slip angle relative to a same surface of less than or about 18°

, the stack comprising at least first and second superimposed layers of said cartons, and a tie sheet interposed between the cartons in each adjacent layer to minimize sliding therebetween, said tie sheets each having upper and lower surfaces each having a coefficient of friction of about 0.8 relative to a same surface, the slip angle between the outer surface of said cartons and its juxtaposed tie sheet surface being in excess of 18°

.

10. The stack of claim 9, further comprising a pallet underlying and supporting the lowermost layer of said cartons.

11. The stack of claim 9, wherein said cartons have an outer surface with a slip angle of no more than 14°

relative to a same surface.

12. The stack of claim 9 wherein the slip angle between the outer surface of each said carton and its juxtaposed tie sheet surface is about 22°

.

13. The stack of claim 9 wherein each of said tie sheets includes a substrate comprising a paper board selected from the group consisting of chipboard and linerboard.

14. The stack of claim 13 wherein said substrate is chipboard sized to a standard 10 minutes water drop test.

15. The stack of claim 13 wherein said substrate is linerboard having a weight of from about 26 to about 90 pounds per thousand square feet.

16. The stack of claim 9 wherein each of said tie sheets comprises a substrate of sheet material coated on each surface with a pressure-sensitive latex.