JPH11139487A - Protective body for packaging - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protective body for packaging which is free from any labor for assembly and excellent in strength, and damages no article to be packaged. SOLUTION: A cap-shaped protective body 1 for packaging which is fitted to each end of a roll-shaped article to be packaged, consists of the mixture of at least one kind of chips and fibrous materials of paper, paper composite, wood and wooden composite, with the thermoplastic resin, and is provided with a short cylindrical part 4b, a cap-shaped core 4 integrated therewith and having a disk-shaped part 4a to close one end opening thereof, and at least one of an inner cover 5 to cover the inner surface of the core 4, and an outer cover 6 to cover the outer surface of the core 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of packaging a long packaged object such as a film, a foil, a paper, and a thin metal plate in a rolled state. The present invention relates to a cap-shaped package protector for protecting a part.

[0002]

2. Description of the Related Art Conventionally, a short cylindrical portion and an inward flange portion formed on the upper portion of a short cylindrical portion as a cap-shaped packaging protective body which is respectively fitted to both ends of a roll-shaped package. And a disk-shaped second member fixed to the flange portion.

FIG. 3 and FIG. 4 show this kind of packaging protective body.

[0004] The packaging protector (10) shown in FIG. 3 has a short cylindrical portion formed by bending an upper portion of a cylindrical member (28) inward.
A first member (24) consisting of (11) and an inward flange portion (23) is formed. The tubular member (28) is obtained by spirally winding a laminate in which a plurality of belt-shaped paperboards are stacked and thin paper covering the outer surface of the laminate. Further, the cylindrical member (28) is bent after forming a folding wrinkle extending in the axial direction on an upper portion thereof. The second disk-shaped member (12) is disposed on the inner surface of the flange (23) and is fixed to the flange (23) by a staple (13). After bending the tubular member (28), wrinkles due to the bending are generated in addition to the wrinkles for bending (hereinafter, both wrinkles are collectively referred to as wrinkles (25)
).

[0005] The packaging protective body (10) has a problem that delamination may occur from a wrinkled portion of the flange portion (23). Also, for wrinkles (25),
The thickness of the flange portion (23) is not constant. That is, since the upper portion of the tubular member (28) is bent to form the flange portion (23), the thickness of the distal end portion of the flange portion (23) is larger than the thickness of the base end portion. Also, the flange
Also in the circumferential direction of (23), since there are portions with wrinkles and portions without wrinkles, the thickness in the circumferential direction is not constant. Due to this change in thickness, delamination occurs, and there is also a problem that the strength of the protective package is reduced.

FIG. 4 shows a packaging protective body for solving this delamination. This packaging protector
(15) is a first cylindrical part (16) and a flange part (27).
It has a member (26) and is formed with a slit (18) for preventing wrinkles from occurring on the flange portion (27). The disk-shaped second member (17) is fixed to the inner surface of the flange portion (27) by bonding.

The first member (26) of the package protector (15) is
A plurality of strip-shaped paperboards were obtained by folding a sheet-like material obtained by fixing the thin papers arranged so as to cover the outer surface of the stacked paperboards to each other by bonding or the like, and
Slits in the horizontal wall of the straight L-shaped cross-section inverted L-shaped member consisting of a horizontal wall and a downwardly projecting vertical wall connected thereto (18)
And an adhesive tape between the ends of the inverted L-shaped member.
They are fixed to each other by (19).

The packaging protective body (1) thus formed
0) (15) is used by being fitted over both ends of the roll-shaped packaged object.

[0009] In the case of the above-mentioned conventional packaging protective bodies (10) and (15),
The operation of fixing the disk-shaped second members (12) (17) and the first members (24) (26) by staples (13) or bonding is difficult to automate, and in any case, the packaging protective body ( There is a problem that it takes time to assemble 10) and 15).

[0010] The disc-shaped second member (12) (17) and the first member
Since (24) and (26) are fixed by staples (13) or adhesive, there is a problem that the strength of these connecting parts is small.For example, when trying to roll and transport the packaged object,
Protective body for packaging (10) (15) may be damaged during transportation,
There is a problem that care must be taken in handling the packaged items protected by the package protectors (10) (15). Further, there is a problem that delamination is likely to occur in the portion where the slit (18) is formed.

When the disc-shaped second member (12) and the first member (24) are fixed by the staple (13), the staple (13)
Therefore, there is also a problem that the end of the packaged object may be damaged.

[0012] Further, the roll-shaped articles to be packaged are usually stacked and transported so as to be vertically extended in the axial direction, but are conventionally transported.
However, as shown in FIGS. 3 and 4, there is a problem that the upper end surface, that is, the outer surface is not flat, and the stacked packages become unstable.

SUMMARY OF THE INVENTION An object of the present invention is to provide a packaging protector which solves the above-mentioned problems, has no trouble in assembling, does not delaminate, has high strength, and does not damage a packaged object. Another object of the present invention is to provide a packaging protector that stabilizes a packaged object even when the packages are stacked.

[0014]

Means for Solving the Problems and Effects of the Invention In order to solve the above-mentioned problems, a protective package for packaging according to the present invention is a protective package for cap-shaped packaging that is fitted over both ends of a roll-shaped package. , Paper, paper-based composite, wood, wood-based composite strip, and / or fiber material
A cap-shaped core body made of a kneaded body of a seed and a thermoplastic resin and having a short cylindrical portion and a disk-shaped portion provided integrally with the short cylindrical portion and closing one end of the same, and covering the inner surface of the core body At least one of an inner cover and an outer cover that covers the outer surface of the core body.

The package protector is, for example, a heat-kneaded mixture of a piece of paper and a thermoplastic resin with an extruder, which is disposed at predetermined intervals above and below, and the completed state of the package protector. In the horizontal plate-shaped protective member manufacturing member forming a three-layer structure extruded between the horizontal thin plate-shaped cover member to be a cover,
This manufacturing member is punched into a disk shape, and the disk-shaped member is obtained by forming the disk-shaped member into a cap shape by using a mold, so that the manufacturing operation of the packaging protection body can be easily automated,
There is no need to assemble the protective body for packaging, and it is inexpensive.

In the above-mentioned packaging protection body, since the short cylindrical portion and the disk-shaped portion are integrally formed, the strength of the packaging protection body is large, and the packaging protection body is used during transportation of the packaged object. No damage or delamination occurs due to the impact on the package, and damage to the packaged object due to damage to the protective body for packaging or delamination does not occur. In addition, since the short cylindrical portion and the disk-shaped portion are configured without any step, the articles to be packaged can be stably stacked. This package protector has a smaller calorie burn than the case where it is made of only resin, so that the furnace is not damaged during combustion.

Furthermore, since the inner surface of the disc-shaped portion is smooth and has no projections due to staples or the like, the packaged object is not damaged, and a protective material such as a cardboard is provided between the packaged product and the protective package. There is no need to arrange.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A packaging protector (1) according to an embodiment of the present invention will be described below with reference to FIGS.

The package protector (1) of the present embodiment is fitted on both ends of a package (7) comprising a sheet-like member (3) wound around a hollow core (2). is there.

A sheet (21) for preventing the sheet-like member (3) from being stained is wrapped around the outer periphery of the sheet-like member (3), and ends of the sheet (21) are adhered to each other by an adhesive tape (22). Glued.

[0021] As shown in FIG.
(1) a core (4) consisting of a combined body formed by mixing a total of 100 parts by weight of 30 to 70 parts by weight of a paper strip and 70 to 30 parts by weight of a thermoplastic resin such as polypropylene; body
Inner cover (5) made of high-quality paper covering the inner surface of (4) and core (4)
And a high-quality paper outer cover (6) for covering the outer surface of the paper. In addition, the small pieces are used for processing waste materials such as paper containers, packaging materials, packaging tools, paper tubes, etc., collected materials and chips generated when cutting cloth, and defective products generated when printing printed materials such as books, etc. It may be obtained by crushing or fibrous formation.

The core body (4) has a cap shape comprising a short tubular portion (4b) and a disk-shaped portion (4a) provided integrally with the short tubular portion and closing an upper end opening thereof. Also, both covers (5)
(6) also has a cap shape, and the core (4) is the core (4).
Except for the lower end of the short cylindrical portion (4b), the cover is covered with covers (5) and (6), and the entire package protective body (1) has a cap shape.

[0023] Such a protective body for packaging (1) is fitted over each end of a roll-shaped article to be packaged (7). And
The cylindrical part (8b) of the fixing member (8) consisting of the disk-shaped part (8a) and the cylindrical part (8b) protruding from one surface thereof is fixed to the packaging protective body (1).
The adhesive tape (9) is inserted into the hollow part of the winding core (2) from the through hole (1a) of Attach and secure the package protector (1) to the package (7).

The through-hole (1a) is not essential, and may be fixed with an adhesive tape by fitting a package protective body to a packaged object.

It is desirable that the packaging protector (1) is manufactured by the following procedure. First, a thin piece of paper or the like and a thermoplastic resin are heated and kneaded with an extruder, and the mixture is arranged at predetermined intervals above and below, and the cover (5) ( 6) A horizontal plate-like protection member manufacturing member having a three-layer structure is extruded between the horizontal thin plate-like cover members. Then, the manufacturing member is punched into a disk shape, and the disk-shaped member is formed into a cap shape by a mold. Further, after the cap-shaped cover member is formed in advance, and the two cover members are arranged at a predetermined interval, the material kneaded between the cover members is extruded, and both the cover members and the kneaded material are pressed. The thickness may be set to a predetermined thickness.

The thickness of the core (4) can be freely adjusted by changing the distance between the upper and lower cover members. Usually, it is preferable to set it to about 2 to 10 mm. further,
The strips constituting the core body (4) are not limited to those made of paper as in the above embodiment, but may be made of wood or wood-based composite material. Also in this case, strips can be obtained from the processing waste material and the recovered material. Further, a fiber material may be used instead of the strip.

The covers (5) and (6) are not limited to high quality paper, but may be made of paperboard, glassine sheet, kraft paper, nonwoven fabric, film, etc., but have water resistance. Is preferred.

[Brief description of the drawings]

FIG. 1 is a perspective view of a package protector according to an embodiment of the present invention in use.

FIG. 2A is a perspective view of the packaging protective body, and FIG. 2B is a cross-sectional view taken along line bb in FIG. 2-A.

FIG. 3 is a perspective view of a conventional packaging protection body.

FIG. 4 is a perspective view of another conventional packaging protection body.

[Explanation of symbols]

 (1) Protective body for packaging (4) Core (4a) Disc-shaped part (4b) Short tubular part (5) Inner cover (6) Outer cover (7) Packaged item

Claims (1)

[Claims] 1. A cap-shaped wrapping protection body fitted to both ends of a roll-shaped wrapped object, wherein at least one of paper, paper-based composite material, wood, strip of wood-based composite material, and fiber material. A cap-shaped core made of a kneaded body of at least one kind and a thermoplastic resin and having a short cylindrical portion and a disk-shaped portion provided integrally with the short cylindrical portion and closing one end opening thereof, and an inner surface of the core And at least one of an outer cover that covers an outer surface of the core body.