JP2000103463A - Packing material and package using same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent packing materials from sticking to each other when they are stacked for storage by respectively applying, to faces at both ends, an adhesive which exhibits adhesive strength when applied faces are overlaid and rarely exhibits adhesive strength when an applied face is overlaid on a non- applied face. SOLUTION: An emulsion-type adhesive is applied or blown to a surface of one of ends 3 or to a rear face of the other end 4 of a corner protector 6 comprising a strip-like corrugated fiberboard material which is shaped like a ring so as to form adhesive applied faces 6c, 6d. A pressure adhesive mainly containing a rubber-based pule yellow-colored latex may be used as the adhesive. Thus an adhesive face once dried does not exhibit adhesive strength even if it is overlaid on a face without the adhesive applied of the corrugated fiberboard material. Therefore, at the time of stacking the materials for storage, since the adhesive applied face 6c or 6d is overlaid on the non-applied face of the adhesive of another corner protector 6, adhesive strength may not be exhibited, whereby the corner protectors may not stick to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a package for packaging a cylindrically wound material such as a rolled steel strip as a packaged object, and more particularly to a package which is applied to a corner of the packaged object to protect the corner. The present invention relates to a packing material to be used and a package using the packing material.

[0002]

2. Description of the Related Art When packing a package to be transported or stored, the package is covered with paper, cardboard, steel plate, or the like, and then a packaging material as a corner protector is applied to a corner to cover the package. The package and the packing material are fixed together by a band.

FIG. 5 shows a cylindrical winding material 1 as an example of the packaged object. FIG. 6 shows a state in which the cylindrical winding material 1 is obtained by winding a steel plate into a cylindrical shape, and the cylindrical winding material 1 is packed with paper and, if necessary, a protection steel plate is wound. As shown, a plurality of bands 2 are wound around the outer circumference and the inner circumference. At this time, the corner protectors 3a and 3b are attached to the outer peripheral edge 1a and the inner peripheral edge 1b of the cylindrical winding material 1, respectively, and the band 2 is wound from above the corner protectors 3a and 3b. The corner protectors 3a, 3b protect the corners of the outer peripheral portion 1a and the inner peripheral portion 1b of the cylindrical winding material 1 from tightening of the band 2, and are used when a wire is passed through the inner peripheral portion and lifted by a crane. It has a role of protecting the corner of the inner peripheral edge 1b.

As shown in FIG. 7, these corner protectors 3a are manufactured by, for example, forming a strip-shaped corrugated cardboard so as to have an L-shaped cross section, and forming a cut 3c to bend into a ring shape. . Also the inner peripheral edge 1
The corner protector 3b attached to the "b" is similarly manufactured.

[0005]

However, a corner protector 3a as shown in FIG. 7 is formed by forming a band-shaped corrugated cardboard into a ring shape. The end is overlapped on the part, and the band 2 is wound in this state. Therefore, it is necessary to hold the end-to-end mating portion until the band 2 is wound. If the band 2 is not wound around the overlapping portion between the end portions, the end portions are separated from each other in the state of the package shown in FIG.

Therefore, it is preferable to bond the end portions to each other while the corner protector 3a is wound around the cylindrical winding material 1 as shown in FIG. 6, but as shown in FIG. The work of applying and bonding the adhesive in the wound state is complicated. It is also conceivable to apply a high-viscosity adhesive to the ends and the like before applying the corner protector to the cylindrical winding material.In this case, store multiple corner protectors in a stack. For example, there is a problem in that the corner protectors are adhered to each other by the adhesive when the corner protector is placed.

The present invention has been made to solve the above-mentioned conventional problems, and stores packaging materials in a state where an adhesive for bonding the ends is applied in advance in a state of being applied to a package. It is an object of the present invention to provide a packing material that can prevent the packing materials from being sometimes adhered to each other, and a package using the packing material.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a packing material having a long plate material, the cross section of which is bent into an L-shape, and whose both ends are overlapped in a state of being applied to a corner of a packaged object. An adhesive is applied to each of the mating surfaces of the both ends, and the adhesive exerts an adhesive force that does not separate when the adhesive applied surfaces are overlapped, and the adhesive applied surface and the adhesive non- It is characterized in that it hardly exhibits an adhesive force when it is overlapped with the application surface.

For example, the adhesive has a rubber-based latex as a main component and a viscosity at 30 ° C. of 250 ± 100 c.
p (centipoise), which was dried after application. The plate is, for example, a cardboard material.

[0010] In the present invention, the object to be packaged has a cylindrical shape or a box shape, and a packing material (corner protector) is applied to a corner of the object to be packaged. At this time, the ends of the packing material are overlapped with each other, and the ends are stopped by an adhesive which exerts an adhesive force when the adhesive-applied surfaces are overlapped with each other. In this state, packing work such as winding a band is performed. Since this adhesive does not show adhesive strength when it is fitted to the adhesive non-applied surface,
When packing materials (corner protectors) are stored in piles, they do not adhere to each other.

[0011] As such an adhesive, the adhesive surface is
It is preferable to use a pressure-sensitive adhesive that has a rubber-based pale yellow latex as a main component, and that exhibits an instantaneous bonding ability after being applied and dried on a target portion. Generally, the adhesive adheres to the adherend because the adhesive spreads on the adherend surface, wets the adherend surface, and diffuses into the adherend, so that the adhesive Due to solidification in a state where van der Waals force is exerted due to a decrease in the distance between them and a state where the adhesive and the adherend are mechanically entangled.

When a pressure-sensitive adhesive mainly composed of rubber-based pale yellow latex is applied to a cardboard material and dried, the adhesive spreads on the surface of the cardboard material, wets the surface of the cardboard material, and diffuses into the cardboard material. And solidify. Even if the surface of the adhesive once dried is superimposed on another cardboard material, it cannot wet the cardboard material surface and diffuse into the cardboard material, so that the cardboard material cannot be bonded. However, when the dried adhesive surfaces are overlapped with each other and pressed, the distance between the molecules of the adhesive is reduced, and the adhesive molecules adhere to each other.

The packing material (corner protector)
May be made of not only cardboard but also polypropylene or polyethylene. When a plastic material such as polypropylene or polyethylene is used, manufacturing costs and recycling costs can be reduced.

Further, in the package of the present invention, the packing material is applied to a corner of the packaged object, the adhesive-applied surfaces of both ends of the packing material are overlapped, and the both ends are temporarily fixed. In this state, the packing material and the packaged object are wound with a band. This package is
Since the edges of the packing material applied to the corners do not separate,
Good looking.

The object to be packaged is a metal plate wound into a cylindrical shape, and the packing material is applied to an outer peripheral edge or an inner peripheral edge thereof. Alternatively, the object to be packaged may be a box, and the packing material may be applied to a straight corner.

[0016]

FIG. 1 is a perspective view showing a packing material (corner protector) of the present invention, FIG. 2 is a perspective view showing a state in which the ends of the packing material are joined, and FIG. 3 is a manufacturing process of the packing material. FIG. 4 is an explanatory view showing a state in which packing materials are stacked. The corner protector 6, which is the packing material of the present invention shown in FIGS. 1 and 2, is applied to the corner of the outer peripheral edge 1a of the cylindrical winding material 1 like the conventional corner protector 3a shown in FIG.

As shown in FIG. 3A, the corner protector 6 is formed from a strip-shaped cardboard material. The strip-shaped corrugated cardboard material is similarly reinforced by adhering cardboard backing plates 7, 7 on both sides except for the central portion in the width direction. As shown in FIG. 3 (B), the central part in the width direction where the contact plates 7, 7 are not joined is bent at a right angle with a polygonal line 6a to form an L-shaped cross section. Further, a V-shaped notch 6b is formed on one side at a constant pitch, and is then pressed with a roll to form a ring.

As shown in FIG. 1, an emulsion adhesive is applied to or sprayed on the front surface of one end and the back surface of the other end of the ring-shaped corner protector 6, as shown in FIG. Application surfaces 6c and 6d are formed. When the adhesive application surfaces 6c and 6d are formed on the front and back surfaces at both ends, the both ends of the ring-shaped corner protector 6 can be naturally bonded.

As shown in FIG. 2, the corner protector 6 on which the adhesive application surfaces 6c and 6d are formed is face-to-face and the adhesive application face 6c and the adhesive application face 6d are pressed and pressed. Then, they are laminated and temporarily fixed. At this time, the diameter of the ring is adjusted to the diameter of the outer peripheral edge 1a of the cylindrical winding material 1.

In the package of the present invention, the temporarily fixed ring-shaped corner protector 6 is applied to the outer peripheral edge 1a of the cylindrical winding material 1 wrapped in a paper packing material, as in FIG. Can be An inner corner protector formed in the same manner as shown in FIGS. 1 to 3 is attached to the inner peripheral edge 1b of the cylindrical winding material 1. Further, a plurality of bands 2 extend from the outside of the corner protector 6 to the outer circumference and the inner circumference.
Is wound and fixed.

As shown in FIG. 2, the adhesive-coated surfaces 6c, 6c
When the corner protector 6 is formed in a ring shape by being bonded and temporarily fixed to each other, when the corner protector 6 is fitted into the outer peripheral edge 1 a of the cylindrical winding material 1, the end portion of the corner protector 6 is pressed down. Work efficiency is improved. Moreover, in this package, even if the band 2 is not hung on the part with the end, the end is not separated from the end, and the appearance of the package is good.

As the adhesive applied to the adhesive application surfaces 6c and 6d, a pressure-based adhesive having a rubber-based pale yellow latex as a main component, which is applied to a target portion and dried, and then exhibits instantaneous adhesion is used. . The viscosity of this adhesive is 250 ± 30 ° C.
100 cp and pH 10.0 ± 1.0. Dilute with water as needed.

When a pressure-sensitive adhesive mainly composed of a rubbery pale yellow latex is applied to a cardboard material and dried, the adhesive spreads on the surface of the cardboard material, wets the surface of the cardboard material, and diffuses into the cardboard material. Solidify. Once the adhesive surface is dried, even if it is overlaid on the non-adhesive coated surface of the cardboard material, it cannot wet the adhesive non-coated surface and diffuse into the cardboard material. It does not exhibit adhesive strength.

However, in the surface bonding between the adhesive coated surfaces 6c and 6d, when the surfaces of the dried adhesive are overlapped and pressed, the distance between the molecules of the adhesive becomes small, and the adhesive can be temporarily fixed. Demonstrates adhesive strength. Therefore, as shown in FIG. 2, when the corner protector 6 is formed in a ring shape and the adhesive-applied surfaces 6b and 6c at both ends are overlapped with each other, the corner protector 6 exerts an adhesive force and the end portion is prevented from peeling off. Can be prevented. In addition, since the adhesive strength at this time is not excessive, it is possible to easily separate the end portion from the end portion after unpacking the package.

Further, as shown in FIG. 4, when the corner protectors 6 are stored in an overlapping manner, the adhesive applied surface 6c
Alternatively, since 6d overlaps the adhesive-uncoated surface of the other corner protector 6, no adhesive force is exhibited, and the corner protectors are not bonded to each other.

Further, the corner protector 6 may be formed of a plastic material such as polypropylene or polyethylene in addition to the cardboard material. If the corner protector 6 is formed of a plastic material, it can be washed and reused after use. Also in this case, when the adhesive is used, the adhesive force is exerted between the adhesive-applied surfaces, and the adhesive force is not exerted between the adhesive-applied surface and the non-adhesive-applied surface.

If the dirt becomes severe or damaged, it is recycled. When a cardboard material or a plastic material such as polypropylene or polyethylene is used, manufacturing costs and recycling costs can be reduced.

[0028]

As described above in detail, in the packing material and the package according to the present invention, since the ends of the packing material applied to the corners of the package are temporarily fixed to each other, the band winding operation is performed. Can be easily performed. When the packing materials are stacked, the packing materials are not bonded to each other.

[Brief description of the drawings]

FIG. 1 is a perspective view of a corner protector (packing material) constituting a package of a cylindrical winding material before bonding ends of the package as a preferred embodiment of the present invention.

FIG. 2 is a perspective view of the corner protector constituting the package of the cylindrical winding material after the ends of the corner protector are adhered to each other as an embodiment of the present invention.

FIGS. 3A and 3B are explanatory views showing a manufacturing process of a corner protector.

FIG. 4 is a perspective view showing a state where the corner protectors are overlaid.

FIG. 5 is a perspective view showing a cylindrical winding material as an example of a packaged object.

FIG. 6 is a perspective view showing an example of the package of the present invention.

FIG. 7 is a perspective view of a corner protector for explaining a conventional problem.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical winding material 1a Outer edge 1b Inner edge 2 Band 6 Corner protector 6c, 6b Adhesive applied surface

Claims (5)

[Claims] 1. A packing material whose cross section is bent into an L shape by a long plate material and whose both ends are overlapped in a state of being applied to a corner of a packaged object, wherein each of the mating surfaces of the both ends is provided. The adhesive is applied, the adhesive exerts an adhesive force that does not separate when the adhesive applied surfaces are stacked, and when the adhesive applied surface and the adhesive non-applied surface are overlapped. A packing material characterized by exhibiting almost no adhesive strength. 2. The packaging material according to claim 1, wherein the adhesive has a rubber-based latex as a main component, a viscosity at 30 ° C. of 250 ± 100 cp (centipoise), and is dried after being applied. 3. The sheet material according to claim 1, wherein the plate material is a cardboard material.
Or the packing material described in 2. 4. The packaging material according to claim 1, wherein the packaging material is applied to a corner portion of the packaged object, and the adhesive-applied surfaces of both ends of the packaging material are overlapped with each other. A package, wherein the packaging material and the packaged object are wound with a band in a temporarily fixed state. 5. The packaging according to claim 4, wherein the packaged object is a metal plate wound into a cylindrical shape, and the packing material is applied to an outer peripheral edge or an inner peripheral edge thereof. body.