Poly-coated roll header for paper roll and method for wrapping a paper roll using the same

a poly-coated, paper roll technology, applied in the direction of flexible covers, containers, tray containers, etc., can solve the problems of damage to the later, the wrapping paper is not perfectly sealed at the end of the roll, and the roll is very heavy

Inactive Publication Date: 2013-12-26
ATLANTIC COATED PAPERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a way to protect the end of a paper roll from the elements by applying a coating of polypropylene and low density polyethylene to the inner surface of a linerboard base. This results in a poly-coated roll header that can be used to protect the end of the paper roll.

Problems solved by technology

The rolls are very heavy.
However, with the technique described above, the wrapping paper is not perfectly sealed at the ends of the rolls, even though the wrapping paper and the headers, if any, are rendered watertight due to polymeric coatings.
The infiltrated liquid flows towards the interior header and the paper roll, causing damages to the later.
Damage typically happens during roll transportation, transit, and warehousing when environmental water (i.e. rail, sleet, snow, water puddles along the route, etc.) enters the trailer or boxcar through defective walls, floors, and doors.
Damage may also occur since water found to be on a ground surface may migrate from the bottom of a paper roller towards the top of the paper roller.
Damage to the paper rolls incurs financial burden to the purchaser, the manufacturer, and / or the transporter.
LDPE is not reactive at room temperatures, except by strong oxidizing agents, and some solvents cause swelling.
Polypropylene can be made translucent when uncolored but is not as readily made transparent as polystyrene, acrylic, or certain other plastics.

Method used

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  • Poly-coated roll header for paper roll and method for wrapping a paper roll using the same
  • Poly-coated roll header for paper roll and method for wrapping a paper roll using the same
  • Poly-coated roll header for paper roll and method for wrapping a paper roll using the same

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Experimental program
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Embodiment Construction

[0050]In embodiments there are disclosed a poly-coated roll header for protecting paper rolls to prevent penetration of liquids, such as water, and more particularly, a protective wrapper and a method for wrapping a paper roll using the poly-coated roll header.

[0051]Referring now to the drawings, and more particularly to FIGS. 1 and 2, there is shown a perspective view of a paper roll 30 and of an end 18a of a paper roll 30. For example, a conventional paper roll 30 has a longitudinal roll axis 32, a pair of longitudinally spaced-apart ends 18a, 18b, and an outer roll surface 34 extending between the ends 18a, 18b and radially spaced along the longitudinal roll axis 32. The paper roll 30 is characterized by a length L1 along the longitudinal roll axis 32.

[0052]The paper roll 30 is wrapped with a protective wrapper 16 having a width W1, longer than the length L1 or equal to the length L1, in a manner such that the edge strips 22a, 22b of the layer of protective material 20 of the pro...

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PUM

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Abstract

There is described a paper roll having an end, the poly-coated roll header comprising: a linerboard base having an inner surface; and a coating of a polypropylene mixed with a low density polyethylene applied to at least a portion of the inner surface of the linerboard base, wherein once applied to the end of the paper roll, the poly-coated roll header protects the end of the paper roll against the elements. There is also described a method for wrapping a paper roll having two ends and a length, the method comprising: installing a coated linerboard, previously coated with a polypropylene mixed with a low density polyethylene, at one of the two ends of the paper roll, thereby providing protection against the elements at the one of the two ends of the paper roll.

Description

BACKGROUND[0001](a) Field[0002]The subject matter disclosed generally relates to a protective roll header for rolls to prevent penetration by liquid, such as water, and more particularly, to a poly-coated protective roll header for paper rolls that provide impermeable roll ends and to a method for wrapping a paper roll using the same.[0003](b) Related Prior Art[0004]Newsprint and other forms of paper are manufactured and processed as large elongated sheets or webs. For storage and transport, the paper stock is wrapped around a core to form a cylindrical roll. The rolls are very heavy. A typical roll may range from 25 to 72 inches in diameter and, sometimes, as wide as 145 inches or more. To protect the roll from moisture, the atmosphere, and physical abrasions, the roll itself is wrapped in a moisture proof wrapper for rolls. Typically the rolls are then stacked one on the other and stored on end. Specialized machinery must be employed to automatically apply wrapping material or wra...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): B65D85/00
CPCB65D65/10B65D85/66B65D85/00
InventorRISLER, PASCALJUTRAS, SYLVAIN
OwnerATLANTIC COATED PAPERS