JP3076564B1 - Packaging sheet and roll package using this packaging sheet - Google Patents

Abstract

When a packaging sheet for wrapping an outer surface of a film roll or the like is constituted by a laminate composed of two pieces of kraft paper and a reinforcing sheet sandwiched therebetween, it is difficult to break the packaging sheet and open the package. It is. SOLUTION: A packaging sheet 10 is configured such that a reinforcing sheet 12 made of a cross sheet is sandwiched between kraft papers 11a and 11b. End area 13 of packaging sheet 10
In this case, the reinforcing sheet 12 is not provided, and the release sheet 14 made of the split-fiber nonwoven fabric is interposed in this region.
Kraft papers 11a and 11b are adhered in a state where the reinforcing sheet 12 and the release sheet 14 are sandwiched. When the release sheet 14 is peeled off from the package, the upper and lower kraft papers 11 are removed.
a and 11b can be torn and unpacked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging sheet for packaging a roll-shaped package or box-shaped package such as a film or paper roll, and a roll using the packaging sheet. It relates to a package.

[0002]

2. Description of the Related Art Agricultural resin sheets used for covering greenhouses and ridges are made of a PE (polyethylene) film or the like. This agricultural resin sheet is transported or stored in a state of being wound into a roll and the surface is wrapped with a packaging sheet. Kraft paper is used as the wrapping sheet. However, if only kraft paper is used, there is a problem that the strength of the wrapping sheet is low and the wrapping sheet is easily broken.

[0003] Therefore, a packaging sheet in which a reinforcing sheet is sandwiched between two kraft papers is used. As this reinforcing sheet, for example, a cross sheet obtained by forming a polyethylene film having a short width and a long dimension into a cross shape and heat-sealing each other is used. This cross sheet is 2
Kraft paper is sandwiched between sheets of kraft paper, and the kraft paper and the cross sheet are bonded to each other.

[0004]

The outer surface of the roll-shaped article to be packed is wrapped with the above three-layered wrapping sheet, and the edge of the wrapping sheet is adhered to the outer surface of the inner wrapping sheet to be stopped. Can be

When an agricultural resin sheet is used, it is necessary to peel off the packaging sheet and open the package. For this unpacking, there is a method in which the packaging sheet wound on the outer surface of the roll-shaped article to be packaged is cut with a knife. There is a possibility that a part of the agricultural resin film may be cut and the agricultural resin film may become unusable.

[0006] Therefore, it is conceivable that a release tape is applied to the surface of the packaging sheet, and the release tape of the packaging sheet surrounding the object to be packed is peeled off to break the packaging film. However, since the laminated sheet in which the cross sheet is sandwiched between the kraft papers has high strength, it is difficult to form tears on both of the two kraft papers when the release sheet is peeled off, and the unpacking is surely performed. Can not.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and in a three-layered packaging sheet having a reinforcing sheet sandwiched therein, a packaging sheet in which a part of the packaging sheet can be reliably torn. It is another object of the present invention to provide a roll package using the packaging sheet.

[0008]

The present invention relates to a packaging sheet for wrapping an article to be packed, wherein a reinforcing sheet is interposed between two sheets of paper, and the two sheets of paper and the reinforcing sheet are adhered to each other. And a release sheet extending substantially the entire width in the width direction is sandwiched between the two paper materials in an end region where the reinforcing sheet does not exist, and the two paper materials and the release sheet are bonded to each other. The release sheet and the release sheet
The paper material that is glued under together the edge of the release sheet
Torn at the part and where the reinforcing sheet does not exist
Is made possible .

This packaging sheet has a high strength with a reinforcing sheet being sandwiched almost entirely, but the reinforcing sheet is removed in an end region, and a paper material is interposed in the end region. To the release sheet. Therefore, when the release sheet is peeled off in the packaged state, the paper material adhered to the upper and lower sides of the release sheet is broken at both edges of the release sheet, and the package state can be easily opened. For example,
The reinforcing sheet is a resin cross sheet.

The release sheet is preferably a split-fiber nonwoven fabric obtained by crossing split fibers split from a high-density polyethylene film, laminating them, and heat-sealing each other.

Since the release sheet is formed of a high-density polyethylene film, it has a very high strength. When the release sheet is pulled along the width direction of the packaging sheet, the release sheet is cut in the middle. Therefore, the paper material adhered to the upper and lower portions can be reliably torn in the width direction of the packaging sheet.

Since the release sheet is formed by fusing split fibers into a cloth, the upper and lower paper materials are securely bonded to each other at the eyes of the cloth. Therefore, when the release sheet is peeled off, the paper material sandwiching the release sheet from above and below is pulled up while being adhered to each other through the eyes, so that the upper and lower paper materials follow the release sheet. It will surely be broken.

Preferably, the thickness of the release sheet is equal to or less than the thickness of the reinforcing sheet.

By reducing the thickness of the release sheet, it is possible to prevent the inconvenience that only the release sheet swells when the packaging sheet is stored in a roll shape and stored.

Further, a cut or perforation cut to a predetermined length from the edge of the release sheet toward the center in the width direction is formed on the paper material of the two paper materials facing the object to be packed. Preferably, it is formed.

If the cuts or perforations are formed, the paper material on the side of the article to be packed will surely break following the release sheet.

Further, in the present invention, the release sheet can be formed of the same sheet as the reinforcing sheet. For example, the reinforcing sheet and the release sheet can be formed of a cross sheet or the like in which an elongated polyethylene film is formed in a cross shape and heat-sealed to each other.

In this case, the reinforcing sheet is cut in parallel with the edge of the paper material, and the reinforcing sheet located on the edge side of the cutting line at this time functions as the release sheet. Preferably.

In this structure, for example, when a cross-sheet in which an elongate polyethylene film is formed into a cross and heat-sealed to each other is interposed between two papers, the cross-sheet is attached to the edge of the paper. By simply cutting the reinforcing sheet and the release sheet in parallel, both the reinforcing sheet and the release sheet can be easily manufactured.
That is, it is only necessary to bond the cut cross sheet or the like between the two paper materials.

In this case, it is preferable that at least one of the two sheets of paper is cut parallel to the cutting line at a position coinciding with or near the cutting line of the reinforcing sheet.

When the paper material is cut in this way, the cut portion of the paper material can be visually recognized as a peeling line in the package, and the operator can recognize the cut portion of the paper material and take the cut portion. Also, by simply peeling off the paper material on the side of the end region, the packaging sheet can be peeled off while reliably and easily cutting.

Further, in the roll package of the present invention, the outer periphery of a roll-shaped article to be packaged in a cylindrical shape is wrapped by any one of the above-mentioned wrapping sheets, and the wrapping sheet is formed by winding the release sheet around a winding shaft. The end is adhered to the outer surface of the packaging sheet located below the end in the state of being oriented in the direction.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing a roll package of the present invention, FIG. 2 is a perspective view showing a state where a release sheet is peeled off from the roll package of FIG. 1, and FIG. 3 is a package of the present invention. FIG. 4 is an exploded perspective view showing the structure of the sheet, FIG. 4 is a sectional view of an end region of the packaging sheet, and FIG. 5 is a perspective view showing an example of a packaging operation.

The roll package shown in FIG. 1 and FIG.
A resin sheet for agriculture is wound as an article to be packed 2 on the outer surface of the sheet. This agricultural resin sheet is a polyethylene film. However, the article to be packed 2 is not limited to the agricultural resin sheet, but may be a film or a paper material for another use, or a metal foil or a metal plate.

In the roll package, a package sheet 10 is wound around the outer surface of the article 2 to be packed. This packaging sheet 10
Is adhered to the outer surface of the packaging sheet 10 wound inside by an adhesive.

As shown in FIGS. 3 and 4, the packaging sheet 10 is placed between two kraft papers 11a and 11b.
It has a structure in which the reinforcing sheet 12 is sandwiched, and is generally called a kraft sand or the like. The reinforcing sheet 12 is a cross sheet in which an elongated polyethylene film is formed into a cross shape and heat-sealed to each other. The overall strength of the kraft papers 11a and 11b is increased by sandwiching the reinforcing sheet 12 and bonding them together.

As shown in FIG. 3, no reinforcing sheet 12 is interposed between the kraft papers 11a and 11b in the end region 13 of the packaging sheet 10. Then, in this end region 13, a little margin 1 is set from the end 13 a of the packaging sheet 10.
Except for 3b, a release sheet 14 is provided.

The release sheet 14 is a split-fiber nonwoven fabric. For example, fibers formed by splitting a high-density polyethylene film are laminated in a cross direction in the longitudinal direction (X direction) and the width direction (Y direction). The fibers in the longitudinal direction and the fibers in the width direction are heat-sealed to each other. More specifically, a high-density polyethylene film is stretched in the longitudinal direction (X direction).
While spreading in the width direction (Y direction) at this time, making a slit in the width direction to form a longitudinal web, and conversely expanding the high density polyethylene film in the longitudinal direction (X direction) Make a web in the width direction by splitting in the direction. The split fiber nonwoven fabric is formed by laminating and thermally fusing the webs in both directions. Since the high-density polyethylene extends in a cross shape in the longitudinal direction and the width direction, it has a large tensile strength in both directions.

In the end region 13, the release sheet 1
4 is sandwiched between the kraft papers 11a and 11b so as to extend the entire length in the width direction (Y direction). As schematically shown in FIG. 4, the inner surfaces of the kraft paper 11a and the kraft paper 11b are adhered to each other with an adhesive 15 such as a molten polyethylene resin. This adhesive 15 firmly adheres the upper and lower kraft papers 11a and 11b in the eyes of the cross sheet constituting the reinforcing sheet 12, and similarly between the eyes of the split fiber non-woven fabric constituting the release sheet 14. Kraft papers 11a and 11b are firmly adhered and fixed to each other.

Accordingly, the strength of the entire packaging sheet 10 is high in the region where the reinforcing sheet 12 is sandwiched, and the kraft paper located above and below the release sheet 14 is also in the region where the release sheet 14 is sandwiched. 11a and 11b
Are strongly adhered to each other.

As shown in FIG. 1 and FIG.
End region 13 of the roll package is exposed on the outer surface thereof,
Part of the margin 13b (or the entire area of the end area 13)
Thus, the end region 13 is adhered to the inner wrapping sheet 10. Therefore, when the portion of the release sheet 14 is peeled outward, as shown in FIG. 2, not only the release sheet 14 but also the kraft papers 11a and 11b adhered to the upper and lower sides thereof.
Are also peeled together.

That is, since the upper and lower kraft papers 11a and 11b are adhered to each other through the eyes of the release sheet 14, when the release sheet 14 is peeled off, the kraft paper 11b on the front side naturally has both edges of the release sheet 14. However, the kraft paper 11a on the inner side (packaged material side) is also pulled by the kraft paper 11b on the front side, and is easily broken at both edges of the release sheet 14. As a result, as shown in FIG. 2, the packaging sheet 10 can be broken in the width direction, and the package can be easily unpacked.

As shown in FIG. 3, in the kraft paper 11a on the inner side (packaged material side), cuts 11b extending a predetermined length inward from the edges of the kraft paper are formed along both edges of the release sheet 14. If the release sheet 14 is peeled off, a cut line extending along the entire length in the width direction is formed along the release sheet 14 or a perforation extending along the entire length in the width direction along the release sheet 14 is formed. Of the kraft paper 11a is surely torn along the width direction.

FIG. 5 shows a state in which the packaging sheet 10 used for packaging is wound in a roll shape. The release sheet 14 is provided continuously in the longitudinal direction (Y direction) of the packaging sheet 10 in the end region 13 of the packaging sheet 10. Therefore, in the manufacturing process of the packaging sheet 10, two kraft papers 11a and 11b are supplied in the vertical direction (Y direction), and a reinforcing sheet 12 which is a cross sheet and a release sheet which is a split-fiber non-woven fabric between the two kraft papers. 14 in the vertical direction, and the kraft papers 11a and 11
The adhesive sheet 15 is supplied with an adhesive resin such as a molten polyethylene as the adhesive 15 and laminated, whereby the packaging sheet 10 can be manufactured continuously.

When wrapping the article 2 with the wrapping sheet 10, the wrapping sheet 10 is pulled out in a certain length in the vertical direction (Y direction) as shown in FIG. A package is formed so as to wrap the sheet 10 in the X direction.

If the thickness of the release sheet 14 is equal to or less than the thickness of the reinforcing sheet 12, the release sheet 14 is provided when the packaging sheet 10 is wound in a roll as shown in FIG. It is possible to prevent only the swelled portion from expanding.

FIGS. 6 and 7 show another embodiment of the packaging sheet 10 of the present invention.

In this embodiment, the kraft paper 1
1a and the kraft paper 11b, a reinforcing sheet 12 formed of a cross sheet or the like in which an elongated polyethylene film is formed into a cross shape and heat-sealed to each other is sandwiched between the kraft papers 11a and 11b and the reinforced paper 12a. Are bonded to each other with an adhesive 15.

The reinforcing sheet 12 is cut along a cutting line L1-L1 parallel to the end 13a of the packaging sheet. The portion 12a closer to the center of the sheet than the cutting line L1-L1 functions for reinforcement in the package, and the cutting line L1-L
The reinforcing sheet separated to the end 13 a side from 1 functions as the release sheet 12 b in the end region 13. Note that the release sheet 12 is formed in the entire end region 13.
b and the two kraft papers 11 a and 11 b are adhered to each other by an adhesive 15.

Further, one of the kraft papers 11b also has a cutting line L
In 2-L2, it is cut parallel to the end 13a of the packaging sheet 10. Then, as shown in FIG. 7, the central side portion 11b1 of the cut packaging sheet and the end region 1
The third side portion 11b2 is bonded to the sheet center side portion 12a of the reinforcing sheet 12, the release sheet 12b, and the other kraft paper 11a with an adhesive 15.

The cutting line L2-L2 is set at the same position as or close to the cutting line L1-L1 of the reinforcing sheet 12. Further, it is preferable that the central portion 11b1 of the kraft paper 11b cut into two and the portion 11b2 of the end region 13 side are adhered so as to slightly overlap each other at the overlapping portion 16. When the overlapping portion 16 is provided, the cross sheet constituting the reinforcing sheet 12 cannot be seen from the outside from the portion along the cutting line L2-L2 of the kraft paper 11b, and the appearance is good.

As shown in FIG.
0 in the state where the article to be packed is packed, and the overlapping portion 1 shown in FIG.
6 is used so that it faces the outside of the package. Therefore, the operator can use the overlapping portion 16 as a guide for cutting, and the end region 1 closer to the end 13a than the overlapping portion 16 can be.
In 3, when the kraft papers 11 a and 11 b and the release sheet 12 b are grasped by hand and pulled up, the packaging sheet 10 can be easily torn from the cutting line L <b> 1-L <b> 1 of the reinforcing sheet 12 and unpacked.

The packaging sheet 10 of the present invention is not limited to a roll package, but can be used for packaging various shapes such as boxes.

[0044]

As described above, according to the present invention, a high-strength packaging sheet called a cross sand can be easily broken by using a release sheet.

[Brief description of the drawings]

FIG. 1 is a perspective view of a roll package of the present invention;

FIG. 2 is a perspective view showing a state in which a release sheet of the roll package shown in FIG. 1 is peeled off;

FIG. 3 is an exploded perspective view showing an end region of the packaging sheet of the present invention;

FIG. 4 is an enlarged sectional view of an end region of the packaging sheet of the present invention;

FIG. 5 is a perspective view showing a packaging operation;

FIG. 6 is a perspective view showing an embodiment in which a reinforcing sheet is cut and a part thereof is formed into a release sheet;

FIG. 7 is a perspective view showing a joined state of one kraft paper in FIG. 6,

[Explanation of symbols]

 2 Packaged object 10 Packaging sheet 11a, 11b Kraft paper 12 Reinforcement sheet (cross sheet) 12b Release sheet formed by part of reinforcement sheet 13 End area 14 Release sheet (split fiber nonwoven fabric) 15 Adhesive 16 Overlapping part L1 Cutting line of reinforced sheet L2 Cutting line of kraft paper

Claims (9)

(57) [Claims] 1. A packaging sheet for wrapping an article to be packed, comprising:
A reinforcing sheet is interposed between two sheets of paper, and the two sheets of paper and the reinforcing sheet are adhered to each other. In an end region where the reinforcing sheet is not present, between the two sheets of paper. A release sheet extending substantially the entire length in the width direction is sandwiched, and the two sheets of paper and the release sheet are adhered to each other.
And the paper material bonded to the top and bottom of this release sheet
At the same time, the reinforcing sheet exists at the edge of the release sheet.
A packaging sheet characterized in that it can be broken at a non-existent portion . 2. The packaging sheet according to claim 1, wherein the reinforcing sheet is a resin cross sheet. 3. The packaging sheet according to claim 1, wherein the release sheet is a split-fiber nonwoven fabric obtained by laminating split fibers split from a high-density polyethylene film, laminating them, and heat-sealing each other. 4. The packaging sheet according to claim 1, wherein the thickness of the release sheet is equal to or less than the thickness of the reinforcing sheet. 5. A cut or perforation cut to a predetermined length from an edge portion of the release sheet to a center in a width direction of a paper material of the two paper materials directed to a packed object side. The packaging sheet according to any one of claims 1 to 4, which is formed. 6. The packaging sheet according to claim 1, wherein the release sheet is the same sheet as the reinforcing sheet. 7. The reinforcing sheet is cut in parallel with the edge of the paper material, and the reinforcing sheet located closer to the edge than the cutting line at this time functions as the release sheet. The packaging sheet according to claim 6. 8. The packaging according to claim 7, wherein at least one of the two sheets of paper is cut in parallel with the cutting line at a position coinciding with or near the cutting line of the reinforcing sheet. Sheet. 9. An outer periphery of a roll-shaped article to be packaged in a cylindrical shape is wrapped by the packaging sheet according to any one of claims 1 to 8, wherein the packaging sheet is formed by winding the release sheet. A roll package, characterized in that the roll package is oriented in a direction, and its end is adhered to the outer surface of a packaging sheet located underneath.