POLY-COATED ROLL HEADER FOR PAPER ROLL AND METHOD FOR WRAPPING A PAPER ROLL USING THE SAME

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

(a) Field

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.

(b) Related Prior Art

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 wrapping papers to the large rolls.

Various methods have previously been used to wrap paper rolls. One of the most successful methods has been to first wrap the roll in one or two layers of a protective wrapping paper, with the wrapping paper extending outwardly beyond the end of the roll. Next, interior roll headers (i.e. disks formed of corrugated cardboard, chipboard, coated chipboards or laminated kraft paper) are fitted inside the wrapping paper against the ends of the roll. The wrapping paper is then crimped over the edges of the interior headers at the ends of the rolls using a crimping wheel or any other appropriate technique. A set of exterior or outside roll headers are then attached to the ends of the roll over the crimped edges. The headers and the wrapping paper are held in place and affixed to one another through the use of an adhesive, such as a heat sensitive adhesive (i.e. a polymer coating), on the inside surface of the exterior roll header and/or the outward face of the interior roll header.

The exterior roll headers are affixed to the ends of the rolls in a typical roll wrapping machine by applying heat and/or pressure in accordance with the properties of the adhesive used.

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. Infiltration occurs through the end of the wrapped roll, notwithstanding use of watertight wrapper and headers, because wrapped roll is standing on its end on a floor that is often getting wet during transit. Damage to the paper rolls incurs financial burden to the purchaser, the manufacturer, and/or the transporter.

For these reasons, there is certainly a need to provide an improved protective poly-coated header for a paper roll that provide impervious roll ends and that is less expensive and still very resistant to humidity and moisture at the ends of the rolls and to provide an improved method for wrapping a paper roll using the same.

SUMMARY

According to an embodiment, there is provided 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.

According to an embodiment, there is provided a poly-coated roll header for a paper roll comprising: a linerboard base having two opposite surfaces; and a coating of a polypropylene mixed with a low density polyethylene applied to at least a portion of at least one of the two opposite surfaces of the linerboard base.

According to another embodiment, one of the two opposite surfaces defines an inner surface and the other one of the two opposite surfaces defines an outer surface and wherein the coating is applied to at least a portion of the inner surface.

According to another embodiment, the coating is applied to the inner surface.

According to another embodiment, the linerboard base defines a disc-like shape and the coating defines a disc-like shape.

According to another embodiment, the disc-like shape of the linerboard base and the disc-like shape of the coating define an equivalent disc-like shape.

According to another embodiment, the linerboard base is included in the group consisting of: any conventional type of flexible paper material, a cardboard, a laminated paper, a virgin kraft paper, a recycled paper, a corrugated paper material, or any combination thereof.

According to another embodiment, the thickness of the linerboard base is greater than the thickness of the coating.

According to another embodiment, the basis weight of the linerboard base is 8 times greater than the thickness of the coating.

According to another embodiment, the coating comprises from 10% to 30% wt. of polypropylene and from 70% to 90% wt. of low density polyethylene.

According to another embodiment, the coating comprises 20% wt. of polypropylene and 80% wt. of low density polyethylene.

According to another embodiment, there is provided a protective wrapper for a paper roll having two ends and a length, the protective wrapper comprising: an inner roll header for covering at least partially at least one of the two ends of the paper roll; and a layer of paper material having a width greater than the length of the paper roll and an edge strip wherein, in use, the edge strip is crimped against at least one of the two ends of the paper roll thereby defining a crimped edge strip; and a poly-coated roll header for covering at least partially the inner roll header and the crimped edge strip, the poly-coated roll header including: 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 at least one of the two ends of the paper roll, the poly-coated roll header protects the at least one of the two ends of the paper roll against the elements.

According to another embodiment, there is provided a protective wrapper for a paper roll having two ends and a length, the protective wrapper comprising: an inner roll header, defining an inner surface and an outer surface, for covering at least partially at least one of the two ends of the paper roll; and a layer of paper material having a width greater than the length of the roll and an edge strip; a poly-coated roll header for covering at least partially the inner roll header and the crimped edge strip, the poly-coated roll header including: a linerboard base having two opposite surfaces; and a coating of a polypropylene mixed with a low density polyethylene applied to at least a portion of at least one of the two opposite surfaces of the linerboard base, thereby providing protection against the elements at at least one of the two ends of the paper roll; wherein the edge strip for being inwardly crimped against at least one of the two ends of the paper roll.

According to another embodiment, the basis weight of the linerboard base is 8 times greater than the basis weight of the coating.

According to another embodiment, the protective wrapper further comprise a layer of heat sensitive material coated to the coating of the poly-coated roll header, the layer of heat sensitive material having a surface area not exceeding another surface area any one of the two ends of the paper roll.

According to another embodiment, the poly-coated roll header comprises two poly-coated roll headers and the inner roll header comprises two inner roll headers, one of each for each one of the two ends of the paper roll.

According to another embodiment, the poly-coated roll header covers partially at least one of the two ends of the paper roll covered by the crimped edge strip and the inner roll header.

According to another embodiment, the edge strip is inwardly crimped towards at least one of the two ends of the paper roll and against at least one of the two inner roll headers, thereby contributing to the reduction humidity and moisture at at least one of the two ends of the paper roll.

According to another embodiment, the poly-coated roll header covers totally at least one of the two ends of the paper roll covered by the crimped edge strip and the inner roll header.

According to another embodiment, the edge strip comprises two edge strips, each one of the edge strips partially covering the inner roll header covering one of the two ends of the paper roll.

According to another embodiment, the poly-coated roll header further comprise adhesive properties for being linked with the crimped edge strip and the inner roll header and wherein the adhesive properties are activated by heat, infrared, ultraviolet light, ultrasound, pressure, microwaves, radiowaves, X-rays and any combination thereof.

According to another embodiment, there is provided 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.

According to another embodiment, the method further comprises installing an inner roll header at the one of the two ends of the paper roll, prior to the installation of the coated linerboard.

According to another embodiment, the method further comprises wrapping the paper roll with a layer of paper material having a width greater than the length of the paper roll and an edge strip, after installing the inner roll header and prior to installing the coated linerboard.

According to another embodiment, the method further comprises crimping inwardly the edge strip against the inner roll header.

According to another embodiment, there is provided a poly-coated roll header for a paper roll having an end, the poly-coated roll header comprising: a layer of a corrugated paper material sandwiched between two linerboard bases, the corrugated paper material sandwiched between two linerboard bases having an inner surface; and a water resistant coating applied to at least a portion of the inner surface of the corrugated paper material sandwiched between two linerboard bases, 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.

According to another embodiment, the linerboard base is included in the group consisting of: any conventional type of flexible paper material, a cardboard, a laminated paper, a virgin kraft paper, a recycled paper, a corrugated paper material, or any combination thereof.

According to another embodiment, the water resistant coating is included in the group consisting of: a polypropylene mixed with a low density polyethylene, a varnish, a polymeric material or any combination thereof.

The following terms are defined below.

The term “low density polyethylene (LDPE)” is intended to mean a thermoplastic made from petroleum. LDPE is defined by a density range of 0.910-0.940 g/cm³. LDPE is not reactive at room temperatures, except by strong oxidizing agents, and some solvents cause swelling. LDPE can withstand temperatures of 80° C. continuously and 95° C. for a short time. Made in translucent or opaque variations, it is quite flexible, and tough but breakable. LDPE has more branching, i.e. on about 2% of the carbon atoms, than high density polyethylene (HDPE), so its intermolecular forces are weaker, its tensile strength is lower, and its resilience is higher. Also, since its molecules are less tightly packed and less crystalline because of the side branches, its density is lower. The melting point for average, commercial, low-density polyethylene is typically 105 to 115° C. (221 to 239° F.).

The term “polypropylene” is intended to mean a thermoplastic which is defined by a density range of 0.855-0.946 g/cm³. Its melting point reaches 130-171° C. Polypropylene is isotactic and has an intermediate level of crystallinity between that of low-density polyethylene (LDPE) and high-density polyethylene (HDPE). Polypropylene is normally tough and flexible, especially when copolymerized with ethylene. Polypropylene can be made translucent when uncolored but is not as readily made transparent as polystyrene, acrylic, or certain other plastics. Polypropylene is often opaque or colored using pigments. Polypropylene has good resistance to fatigue.

Features and advantages of the subject matter hereof will become more apparent in light of the following detailed description of selected embodiments, as illustrated in the accompanying figures. As will be realized, the subject matter disclosed and claimed is capable of modifications in various respects, all without departing from the scope of the claims. Accordingly, the drawings and the description are to be regarded as illustrative in nature, and not as restrictive and the full scope of the subject matter is set forth in the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Further features and advantages of the present disclosure will become apparent from the following detailed description, taken in combination with the appended drawings, in which:

FIG. 1 is a perspective view of a paper roll being wrapped in accordance with an embodiment;

FIG. 2 is a perspective view, fragmented, of one end of the paper roll of FIG. 1;

FIG. 3A is a cross-sectional view of a poly-coated roll header for a paper roll in accordance with another embodiment;

FIG. 3B is a cross-sectional view of a poly-coated roll header for a paper roll in accordance with another embodiment;

FIG. 3C is a cross-sectional view of a poly-coated roll header for a paper roll in accordance with another embodiment;

FIG. 4 is perspective exploded view of the paper roll to be wrapped in a layer of a paper material and where a poly-coated roll header and an inner roll header are juxtaposed to one end of the paper roll in accordance with another embodiment; and

FIG. 5 illustrates a method for wrapping a paper roll with a poly-coated roll header in accordance with another embodiment.

It will be noted that throughout the appended drawings, like features are identified by like reference numerals.

DETAILED DESCRIPTION

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.

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.

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 protective wrapper 16 extend outwardly beyond the ends 18a, 18b, or such that the edge strips 22a, 22b of the protective wrapper 16 do not extend outwardly beyond the ends 18a, 18b. In general, the edge strips 22a, 22b of the protective wrapper 16 typically extend between 3 to 10 inches and, preferably, between 4 to 9 inches, beyond the ends 18a, 18b but that they can be wider or narrower.

It is to be noted that the edge strips 22a, 22b of the protective wrapper 16 are not necessary straight edges, the edge strips 22a, 22b of the protective wrapper 16 may be shaped edges.

According to an embodiment an still referring to FIGS. 3A and 3B, there is shown cross-sectional view of a poly-coated roll header 10 for a paper roll 30. The poly-coated roll header 10 includes a linerboard base 12 having two opposite surfaces 36, 38. The poly-coated roll header 10 also includes a coating 14 of a polypropylene mixed with a low density polyethylene applied to at least a portion of at least one of the two opposite surfaces 36, 38 of the linerboard base 12. FIG. 3A shows both surfaces 36, 38 of the linerboard base 12 coated with the coating 14 and FIG. 3B shows only one of the two surface 36, 38 of the linerboard base 12 coated with the coating 14. Still referring to FIG. 3B, it is to be noted that the coating 14 may also represent a layer of LDPE coated to the linerboard base 12 and underneath a layer of PP coated to the layer of LDPE. Inversely, it is to be noted that the coating 14 may also represent a layer of PP coated to the linerboard base 12 and underneath a layer of LDPE coated to the layer of PP.

According to another embodiment and referring now to FIG. 3C, there is shown a cross-sectional view of a poly-coated roll header 200 for a paper roll 30. The poly-coated roll header 200 includes a layer of a corrugated paper material 212 sandwiched between two linerboard bases 210. The layer of corrugated paper material 212 sandwiched between two linerboard bases 210 has an inner surface 216. The poly-coated roll header 200 also includes a water resistant coating 214 applied to at least a portion of the inner surface 216 of the layer of corrugated paper material 212 sandwiched between two linerboard bases 210. Once applied to the end 18a or 18b of the paper roll 30, the poly-coated roll header 200 protects the end 18a or 18b of the paper roll 30 against the elements. At least one of the liner board the linerboard bases 210 may be included in the group consisting of, without limitations, any conventional type of flexible paper material, a cardboard, a laminated paper, a virgin kraft paper, a recycled paper, a corrugated paper material, any combinations, and the like. The water resistant coating 214 may be included in the group consisting of, without limitations, a polypropylene mixed with a low density polyethylene, a varnish, a polymeric material, any combination, and the like.

According to another embodiment, one of the two opposite surfaces 36, 38 defines an inner surface 36 and the other one of the two opposite surfaces 36, 38 defines an outer surface 38. The coating 14 may be applied to at least a portion of the inner surface 36. The coating 14 may also be applied to the entire inner surface 36.

According to another embodiment, the linerboard base 12 may define a disc-like shape and the coating 14 may define a disc-like shape. The disc-like shape of the linerboard base 12 and the disc-like shape of the coating 14 may define an equivalent disc-like shape.

According to another embodiment, the linerboard base 12 may be included in the group consisting of, without limitations, any conventional type of flexible paper material, a cardboard, a laminated paper, a virgin kraft paper, a recycled paper, a corrugated paper material and the like.

According to another embodiment, the thickness of the linerboard base 12 is greater than the thickness of the coating 14. On the other hand, the basis weight of the linerboard base 12 may be 8 times greater than the basis weight of the coating 14. For example, the basis weight of the polypropylene may be 15 lbs/3000 square foot when the basis weight of the low density polyethylene may be 126 lbs/3000 square foot.

According to another embodiment, the coating 14 may comprise from 1% to 50% wt. of polypropylene and from 50% to 99% wt. of low density polyethylene. More particularly, the coating 14 may comprise 50% wt. of polypropylene and 50% wt. of low density polyethylene. According to another embodiment, the poly-coated roll header 10 may further include a layer of heat sensitive material. The layer of heat sensitive material may have a surface area not exceeding another surface area of the ends 18a, 18b of the paper roll 30.

According to another embodiment and referring now to FIG. 4, there is shown an exploded view of a protective wrapper 16 for a paper roll 30 having two ends 18a, 18b and a length L₁. The protective wrapper 16 includes a layer of paper material 20 having a width W₁ greater than the length L₁ of the paper roll 30 and an edge strip 22a, 22b. The protective wrapper 16 also includes an inner roll header 15a, defining an inner surface 17 and an outer surface 18. The inner roll header 15a, 15b is for covering at least partially at least one of the two ends 18a, 18b of the paper roll 30. The edge strips 22a, 22b are for being inwardly crimped against at least one of the two ends 18a, 18b of the paper roll 30. The protective wrapper 16 also includes a poly-coated roll header 10 covering at least partially the inner roll header 15a and the crimped edge strip 28. The poly-coated roll header 10, thereby contributing for the reduction of humidity and moisture and protecting against the elements at at least one of the two ends 18a, 18b of the paper roll 30. It is to be noted that the poly-coated header as defined above may be utilized in wrapping a paper roll 30 as an inner roll header 15a and/or 15b and/or as an outer roll header 10.

According to another embodiment, there is provided a method 100 for wrapping a paper roll having two ends and a length. The method comprises the step 102 of applying a coating of a polypropylene mixed with a low density polyethylene to at least a portion of at least one of two opposite surfaces of a linerboard base and the step 110 of installing the coated linerboard at at least one of the two ends of the paper roll, thereby contributing to the reduction humidity and moisture and protecting against the elements at at least one of the two ends of the paper roll.

According to another embodiment, the method may further comprise the step 104 of installing an inner roll header at at least one of the two ends of the paper roll, prior to the installation of the coated linerboard at the at least one of the two ends of the paper roll.

According to another embodiment, the method may further comprise the step 106 of wrapping the paper roll with a layer of paper material having a width greater than the length of the roll and an edge strip, after installing the inner roll header and prior to installing the coated linerboard.

According to another embodiment, the method may further comprise the step 108 of crimping inwardly the edge strip against the inner roll header.

According to an embodiment, the edge strips 22a, 22b may be crimped using a crimping wheel which hammers the edge strips 22a, 22b onto the inner roll header 15a, 15b covering the ends 18a, 18b of the paper roll 30. It will be appreciate that any other suitable technique can be used to crimp the extending edge strips 22a, 22b. Each of these edge strips 22a, 22b of the protective wrapper 16 may overlap onto itself on the inner roll headers 19a, 19b and over the ends 18a, 18b during the crimping procedure.

The layer of heat sensitive material 26 may be made of, without limitations, EMA, EVA, polyurethane, polyethylene, polypropylene, high density polyethylene, and any other suitable heat sensitive material. The layer of heat sensitive material 26 can also be a multilayered material such as EMA/polyethylene, EVA/polyethylene, polyethylene/high density polyethylene, and the like.

For protecting the paper roll 30 from external moisture, the atmosphere, and physical abrasions, the layer of paper material 20 can have moisture proof properties along its width W₁. The heat sensitive material can be selected to provide the moisture proof properties to the layer of paper material.

Referring now to FIG. 2, it will be seen that once the paper roll 30 is wrapped in the protective wrapper 16, the edge strips 22a, 22b are crimped over inner roll header 15a, juxtaposed to the end 18a.

As for the previously described embodiments, when crimped toward the inner roll header 15a, the edge strips 22a of the protective wrapper 16 are in paper to adhesive contact with the poly-coated roll header 10, thereby providing improved barrier properties. The face of the poly-coated roll headers 10, juxtaposed to the edge strips 22a, 22b and to the inner roll header 15 may include some adhesive properties for providing improved barrier properties.

As mentioned above, the adhesive material of the poly-coated roll headers 10 can be an activated adhesive such as a heat activated adhesive. The adhesive properties of the poly-coated roll headers 10 can be activated by any suitable technique. For example, it can be activated by heat, infrared, ultraviolet light, ultrasound, pressure, microwaves, radiowaves, X-rays and any other suitable source to activate adhesives. As mentioned above, the poly-coated roll headers 10 can be coated on one side, or on both sides, with an adhesive such as polyethylene, which bonds the poly-coated roll headers 10 to the protective wrapper 16, in a paper material to adhesive contact.

The ends 18a, 18b, along the lengths of the wrapped paper rolls 30 obtained with the protective wrapper 16 described above is watertight. This prevents liquid infiltration along the crimps.

The paper roll 30 can be any type of rolled paper including coated printing paper. However, it will appreciate that the above described protective wrapper 16 can be applied to any rolled material that needs to be wrapped and protected from liquids and/or moisture infiltration.

The protective wrapper 16 can be manufactured on existing roll wrap extruders, laminators, and coater-laminators and can be applied to the paper roll 30 with existing roll wrapping equipment.

It will be appreciate that the paper roll 30 can be wrapped one turn or more by the layer of paper material 20, depending upon the physical properties of the layer of paper material 20.

The embodiments described above are intended to be exemplary only. Several alternatives are possible. For example, it is possible to wrap the paper roll 30 without using one of both poly-coated roll headers 10. The protective wrapper 16 could be used to protect various moisture sensitive articles not only paper rolls.

While preferred embodiments have been described above and illustrated in the accompanying drawings, it will be evident to those skilled in the art that modifications may be made without departing from this disclosure. Such modifications are considered as possible variants comprised in the scope of the disclosure.

Claims

1. A poly-coated roll header for 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.

2. The poly-coated roll header of claim 1, wherein the linerboard base defines a disc-like shape and the coating defines a disc-like shape.

3. The poly-coated roll header of claim 2, wherein the disc-like shape of the linerboard base and the disc-like shape of the coating defines an equivalent disc-like shape.

4. The poly-coated roll header of claim 1, wherein the linerboard base is included in the group consisting of: any conventional type of flexible paper material, a cardboard, a laminated paper, a virgin kraft paper, a recycled paper, a corrugated paper material or any combination thereof.

5. The poly-coated roll header of claim 1, wherein the thickness of the linerboard base is greater than the thickness of the coating.

6. The poly-coated roll header of claim 1, wherein the basis weight of the linerboard base is 8 times greater than the basis weight of the coating.

7. The poly-coated roll header of claim 1, wherein the coating comprises from 10% to 30% wt. of polypropylene and from 70% to 90% wt. of low density polyethylene.

8. The poly-coated roll header of claim 7, wherein the coating comprises 20% wt. of polypropylene and 80% wt. of low density polyethylene.

9. A protective wrapper for a paper roll having two ends and a length, the protective wrapper comprising:

an inner roll header for covering at least partially at least one of the two ends of the paper roll; and

a layer of paper material having a width greater than the length of the paper roll and an edge strip wherein, in use, the edge strip is crimped against at least one of the two ends of the paper roll thereby defining a crimped edge strip; and

a poly-coated roll header for covering at least partially the inner roll header and the crimped edge strip, the poly-coated roll header including: 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 at least one of the two ends of the paper roll, the poly-coated roll header protects the at least one of the two ends of the paper roll against the elements.

10. The protective wrapper of claim 9, wherein the linerboard base is included in the group consisting of: any conventional type of flexible paper material, a cardboard, a laminated paper, a virgin kraft paper, a recycled paper, a corrugated paper material, or any combination thereof.

11. The protective wrapper of claim 9, wherein the basis weight of the linerboard base is 8 times greater than the basis weight of the coating.

12. The protective wrapper of claim 9, wherein the coating comprises from 10% to 30% wt. of polypropylene and from 70% to 90%% wt. of low density polyethylene.

13. The protective wrapper of claim 12, wherein the coating comprises 20% wt. of polypropylene and 80% wt. of low density polyethylene.

14. The protective wrapper of claim 9, further comprising a layer of heat sensitive material coated to the coating of the poly-coated roll header, the layer of heat sensitive material having a surface area not exceeding another surface area of any one of the two ends of the paper roll.

15. The protective wrapper of claim 9, wherein the poly-coated roll header comprises two poly-coated roll headers and the inner roll header comprises two inner roll headers, one of each for each one of the two ends of the paper roll.

16. The protective wrapper of claim 9, wherein the poly-coated roll header further comprise adhesive properties for being linked with the crimped edge strip and the inner roll header and wherein the adhesive properties are activated by heat, infrared, ultraviolet light, ultrasound, pressure, microwaves, radiowaves, X-rays and any combination thereof.

17. 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.

18. The method of claim 17, further comprising installing an inner roll header at the one of the two ends of the paper roll, prior to the installing of the coated linerboard.

19. The method of claim 18, further comprising wrapping the paper roll with a layer of paper material having a width greater than the length of the paper roll and an edge strip, after installing the inner roll header and prior to installing the coated linerboard.

20. The method of claim 19, further comprising crimping inwardly the edge strip against the inner roll header.

21. A poly-coated roll header for a paper roll having an end, the poly-coated roll header comprising:

a layer of a corrugated paper material sandwiched between two linerboard bases, the corrugated paper material sandwiched between two linerboard bases having an inner surface; and

a coating applied to at least a portion of the inner surface of the corrugated paper material sandwiched between two linerboard bases, 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;

wherein the water resistant coating is included in the group consisting of: a polypropylene mixed with a low density polyethylene, a varnish, a polymeric material or any combination thereof.

22. The poly-coated roll header of claim 21, wherein the linerboard base is included in the group consisting of: any conventional type of flexible paper material, a cardboard, a laminated paper, a virgin kraft paper, a recycled paper, a corrugated paper material or any combination thereof.

23. (canceled)