JPH0826356A - Annular package - Google Patents

Abstract

PURPOSE:To easily unpack an annular package and suppress the occurrence of a twist on a packaged object by a method wherein a sealing part small in adhesive strength is formed on the outer periphery of the annular package enclosing an annularly-shaped object with a heat shrinkable sheet. CONSTITUTION:This annular package 40 is the wrapping of a line-like object 10 such as an electric wire wound around into an annular shape and enclosed with a packaging material 42 consisting of a heat shrinkable sheet. In this example, a sealing part 46 is formed entirely on the outer periphery of the annular package 40. The upper and lower parts of the sealing part 46 and the packaging material 42 are fusibly attached together to such a fusing strength as to permit the packaging material to be easily torn with the hands, etc. By this packaging method, the annular package 40 can be easily unpacked and the occurrence of a twist on the object 10 can be suppressed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a package in which various annular products formed by winding a linear product such as an electric wire are tightly packed, and more particularly to an annular package which can be easily unpacked.

[0002]

2. Description of the Related Art Conventionally, when storing and transferring linear objects such as electric wires, they have been wound into an annular material, which is then closely packaged with a packaging material.
As a method for hermetically packaging, a so-called gaiter-wrapping method in which a tape of a paper or a film is spirally wound by a wrapping machine around a ring-shaped object to be packaged, or heat-sealing packaging with a heat-sealable packaging material has been performed. . However, gaiter-wrapped packaging is not only unsuitable for high-speed automation in the process of passing a tape through the hollow part of an annular package, but also spirals the curved surface of the annular product with a flat tape while maintaining a certain overlap margin. Since the product is rolled up, slippage and looseness are likely to occur, and as a result, the package may collapse during handling to expose the packaged item. For this reason, heat-seal packaging has come into common use recently.

FIG. 6 shows one process of the above heat-sealing packaging method. Generally, as shown in FIG. 6 (a), this packaging method is as follows. First, a heat-sealable packaging material wider than the outer peripheral surface 11 is wound tightly on the outer peripheral surface 11 of the to-be-packaged object 10 to form a cylinder. Form 20. Next, the both ends (sleeve) 31, 31 ′ of this tubular body 20 are respectively packaged 1
0 is bent along both side surfaces and is inserted into the hollow portion 14 of the annular packaged object 10, and as shown in FIG. Is to be packaged. However, in this method, a large number of folds or wrinkles 2 are formed on the packaging material that covers both side surfaces and the inner peripheral surface of the article to be packaged 10.
8 occurs, the appearance is impaired, and the volumetric efficiency of the obtained annular packaging body is also reduced.

In order to solve this problem, the present inventors have
An annular package manufactured by using a shrinkable packaging material has been proposed (Japanese Patent Application No. 1-55580). This annular package is shown in FIG.
It is manufactured by the manufacturing method as shown in the above. That is, as shown in FIG. 7 (a), first, the annular packaged object 1
A sheet 20 'of a heat-shrinkable packaging material wider than the outer circumferential surface 11 is tightly wound around the outer circumferential surface 11 so that the shrinking direction S of the sheet 20' matches the circumferential direction of the object to be packaged 10, Joined part 21 by joining overlapping parts of rolled sheets
1 and the remaining portion of the sheet is cut off to form the packaged object 1
The cylindrical body 20 of the packaging material is formed so as to be in close contact with the outer peripheral surface 11 of 0. Next, the tubular body 20 is heated so that both end portions (sleeve) 31, 31 ′ of the tubular body 20 are contracted along the both side surfaces of the article to be packaged 10, respectively, and as a result, as shown in FIG. 7B. First, the intermediate wrapping body 30 having the tubular body opening 22 having a diameter smaller than the inner diameter is formed on both side surfaces of the article to be packaged 10.

Next, as shown in FIG. 7 (c), an annular sealing surface is provided in the hollow portion of the annular article 10 from both sides of the intermediate package 30, as shown in FIG. 7 (c). By pressing the ring sealers 16 and 16 ′ which have the sealing surfaces, both ends 31 and 31 ′ of the tubular body are clamped and fused,
As shown in (d), a protruding annular seam portion 24 is formed. Further, the excessive portion 32 of the tubular body from the inner peripheral side of the seam portion 24 to the tubular body opening 22 is cut off by fusing or the like to manufacture an annular wrapping body as shown in FIG. This packaging method is hereinafter referred to as "shrink ring packaging method". The ring-shaped package obtained by this shrinking ring packaging method has a good appearance because the packaging material is formed in close contact with the ring-shaped object to be packaged 10 and the ring-shaped hollow portion is open. It is also convenient to carry by hanging a hand or a hook on this hollow part.

[0006]

However, it is difficult to unpack the ring-shaped package obtained by the shrink ring packaging method because the packaging material is entirely adhered to the ring-shaped object to be packaged. There was a problem. That is, in order to open the package, it is necessary to cut the surface packaging material using a knife or the like. However, since the packaging material and the object to be packaged are in close contact with each other, there is a great possibility that the object to be packaged will be damaged during the cutting operation, and the unpacking operation is inefficient.

Therefore, the present inventors further conducted research and development, found a new means for solving this problem, and filed a patent application (Japanese Patent Application No. 5-72572). That is, the annular package is as shown in FIG. That is, the annular packaged object 10 has the outer peripheral surface 11
It is surrounded by a tubular body 20 of a packaging material that is in close contact with, and both end portions (sleeves) 31 and 31 ′ of the tubular body 20 are side surfaces 12 and 12 ′ and an inner peripheral surface 1 of the article to be packaged 10, respectively.
3 extends in close contact with each other and is fused to each other in the inner peripheral surface 13,
It is a package in which a protruding annular seam portion 24 is formed.
The seam portion 24 has an outer peripheral edge 25 of the seam portion 24.
A non-fusing portion 34 for tearing is formed so as to extend therethrough to the inner peripheral edge 26. And, this non-fusing part 34 is
It is formed at a position including the sheet joint portion 21. Inside the seam portion 24, both end portions (sleeve) 3 of the tubular body 20 are provided.
Fusing seal line 2 with the surplus part of 1,31 'cut and removed
7 are formed.

Next, a method of manufacturing this annular package will be described with reference to FIG. First, by the shrink ring packaging method described above,
As shown in FIG. 7 (b), the intermediate package 3 having tubular body openings 22 each having a diameter smaller than the inner diameter of the package 10 on both side surfaces thereof.
Form 0.

Next, as shown in FIG. 9 (a), an annular sealing surface 18 is formed along the inner peripheral surface 13 of the packaged object 10 in the hollow portion of the annular article 10 from both sides of the intermediate package 30. , 1
The ring sealers 17 and 17 ′ having 8 ′ are inserted, and the sealing surfaces 18 and 18 ′ sandwich and fuse both end portions 31 and 31 ′ of the tubular body 20 to form the annular seam portion 24. At this time, as the ring sealer 17, 17 ', the notch 3 extending through the annular seal surface 18, 18' from the outer peripheral edge 19 to the inner peripheral edge 23 of the seal surface.
3 and 33 'are formed, and the notch 3
3, 33 ′ are arranged at positions sandwiching the end portion of the sheet joint portion 21. As a result, the non-fusing portion 34 is formed at a position including the sheet joining portion 21.

The annular package thus obtained has a seam portion 2
The excess portion 29 of the tubular body 20 left inside 4 is melted and cut by an annular heat knife (not shown) to form the fusing seal line 27 shown in FIG. The portion of the fusing seal line 27 is pinched by the heat knife and fusion occurs, so that a weak seal is substantially applied to this portion. Therefore, when the non-fused portion 34 is pulled with a finger, it is torn from the vicinity of the intersection between the fusion-cut seal line 27 and the sheet joint portion 21, and the packaging material can be easily peeled from the article to be packaged 10. Therefore, the annular package is manufactured by the contraction annular packaging method, and the annular package 10 can be very easily opened even though the annular packaged object 10 is closely packaged.

However, in this case, FIG.
As shown in, the object 10 to be packaged is taken out from the inner peripheral surface 13 of the annular package 15. In this way, the object to be packaged 1
When 0 is taken out from the inner peripheral surface 13 side of the annular wrapping body 15, twisting is likely to occur, which may cause a problem such as the need to untwist the packaged object 10 at the time of use.

The present invention has been made to solve this problem, and therefore an object thereof is an annular wrapping body manufactured by a shrinking annular wrapping method, which can be unpacked very easily. An object of the present invention is to provide a product capable of suppressing the occurrence of twist of the packaged object.

[0013]

The ring-shaped package of the present invention comprises:
An annular package in which an annular package is surrounded by a heat-shrinkable sheet, and a sealing portion having a low welding strength is formed on the outer peripheral surface thereof.

[0014]

The ring-shaped package of the present invention has, on its outer peripheral surface,
Since the sealed part is welded with the strength that can be easily peeled off by hooking your hands or fingers,
At the time of unpacking, the packaging material can be torn at the sealing portion and the object to be packaged can be pulled out from the torn portion. Therefore, it is possible to take out the article to be packaged from the outer peripheral surface of the annular package while preventing the article from being twisted, even though it is a simple and easy operation.

[0015]

Embodiments of the present invention will now be described with reference to the drawings. The annular wrapping body 40 of the present embodiment shown in FIGS. 1 and 2 is formed by winding a packaged object 10 which is a linear object such as an electric wire and forming an annular shape, which is surrounded by a wrapping material 42 which is a heat-shrinkable sheet. It was done. A sealing portion 46 is formed on the outer peripheral surface 44 over the entire circumference. The sealing portion 46 is formed by heat-welding the upper portion and the lower portion of the packaging material with respect to the sealing portion 46, and the welding strength thereof is such that it can be easily torn by a hand or the like. To be taken.

The heat-shrinkable wrapping material 42 is a wrapping material which can shrink in a certain axial direction when it is heated, and has a heat-sealing property. The heat-shrinkable packaging material preferably has a shrinkage ratio in the range of 30 to 70% and is uniaxially shrinkable. Examples thereof include a uniaxial heat-shrinkable thermoplastic resin film, a uniaxial heat-shrinkable cloth, a uniaxial heat-shrinkable nonwoven fabric, and the like. Considering the tensile strength and tear strength after packaging, it is more preferable to use a cloth or a non-woven fabric. As an example, a high-density polyethylene or polypropylene stretched tape is used as a warp or weft, and the other yarn is a heat-shrinkable stretched tape formed from a mixture of straight-chain polyethylene having a short-chain branch and polypropylene. Examples include woven flat yarn mixed woven cloth.

A method of manufacturing the annular package 40 will be described below. First, at least two strip-shaped heat-shrinkable sheets 42 ', 42''elongated in the heat-shrinking direction are prepared. Then, the end portion along the length direction of this sheet 42 'is overlapped with the end portion along the length direction of the other sheet 42''as shown in FIG. 4, and is heat-sealed and joined. In this way, the heat-shrinkable sheet 42 having about twice the width of each of the original heat-shrinkable sheets 42 ', 42''(smaller by the overlap margin) is manufactured.

The welding strength of this heat seal is such that even if an unavoidable force is applied to the annular package during the production process, storage, transfer, etc. of the annular package, it will be torn carelessly. However, it does not require high welding strength. Welding strength by heat sealing was measured by a tensile test to find that the gap between test length chucks was 10
0 kg, pulling speed 300 mm / min, 1.0 kg
/ 5cm to 4.0kg / 5cm is desirable, 2.
More preferably, it is in the range of 0 kg / 5 cm to 3.0 kg / 5 cm.

This heat seal portion 46 serves as a sealing portion for the annular package. A hot seal roller 54 is preferably used for the heat seal device used for the heat seal at this time. The hot-seal roller 54 is a disk-shaped heating body, and the heat-shrinkable sheet 4 is placed so that the overlapping portions of the heat-shrinkable sheets 42 ′ and 42 ″ come into contact with the peripheral surface thereof.
By transferring 2 ′, 42 ″, the overlapped portion is heated and pressure-bonded. By using such a hot seal roller 54, the heat shrinkable sheets 42 ′, 42 ″ can be joined. , Can be continuously performed without heating unnecessary portions.

Next, the heat-shrinkable sheet thus obtained is used to surround the article 10 to be packaged by the shrink-annular wrapping method. As shown in FIG. 5 (a), the ring-shaped object 10 that is the object to be packaged.
Of the heat-shrinkable sheet (packaging material) 42, 42 produced above, which is made wider than the annular member 10, is respectively pulled out from the rolls 48, 48 and their one ends are adhered to each other. It is arranged vertically in front of the annular object 10. Then, the annular object 10 is moved to the front side in the drawing to pass between the rolls 48, 48. As a result, the sheets 42, 42 are pulled out from the rolls 48, 48, and the sheets 42, 42 are wound around the outer periphery of the article to be packaged 10. Therefore, the sheets 42, 42 wound around the outer periphery of the object to be packaged 10 are heat-sealed and heat-cut by the outer periphery sealing device 50 at positions on the front side of the rolls 48, 48. As a result, the sleeve 31 formed of the cylindrical sheets 42, 42 is formed on the outer periphery of the object to be packaged 10, and at the same time, the sheets 42, 42 pulled out from the rolls 48, 48 have their ends again again. To be glued.

According to the above procedure, the article 10 having the outer periphery sealed and the sleeve 31 formed thereon is heated by a heating device (not shown). As a result, the entire sleeve 31 is heat-shrinked and closely adheres to the outer periphery of the object to be packaged 10,
Both open ends of the sleeve 31 are closed, and as shown in FIG. 5B, an intermediate product 52 in which both side surfaces of the article to be packaged 10 are also covered with the sheets 42, 42 is obtained. Next, as shown in FIGS. 5C to 5E, such an intermediate product 52 is subjected to inner circumference sealing. That is, as shown in FIG. 5 (c), the circular sealing devices 16 and 16 'which enter the central portion from both sides of the article to be packaged 10 as shown in FIG. Sheets 4 and 4 covering the
2 is wound inside the article to be packaged 10 and both are packaged 1
At the same time as heat-sealing along the inner circumference of 0, unnecessary portions of the sheet end are heat-cut. Then, if the central portion which is an unnecessary portion is removed, as shown in FIG.
The final product 40 of an annular package, which is covered with sheets 42, 42 on all surfaces and sealed, is completed.

An annular package 40 obtained by the above procedure
The sheet 42, which is a wrapping material, is in close contact with the entire surface of the article 10 to be packaged, and the article 10 is completely sealed.
Therefore, it is possible to reliably prevent foreign matter such as dust and dust from entering from the outside, and do not require a complicated packaging process as in the case of spirally winding a belt-shaped packaging material, and moreover, the packaging material is There is no possibility that the article to be packaged 10 is displaced and exposed. Furthermore, since it has a good appearance and the annular hollow portion is open, it is convenient to carry by hanging a hand or a hook on this hollow portion.

In the above-obtained annular package 40 of this embodiment, in order to unpack it and take out the article to be packaged 10 from the packaging material, the sealing portion formed on the outer peripheral surface of the annular package 40. An operator hooks 46 with a hand or fingers, and the sealing portion 46
Tear up. Since the sealing portion 46 is joined by heat sealing with low welding strength, it can be easily peeled off. Then, from the peeled-off sealing portion 46, the packaged object 1 of the linear object inside the packaging material 42.
By pulling out the tip of 0 and pulling it by hand, it is possible to take out the required amount of the articles 10 to be packaged one after another.

With the annular package of this embodiment, the object 10 to be packaged can be taken out from the outer peripheral surface of the annular package, so that the object to be packaged is unlikely to twist and a problem occurs during use of the object to be packaged. Can be suppressed. Further, since the sealing portion can be easily torn by hand without using a tool such as a blade, even if the packaging material and the packaged object are in close contact with each other,
There is no possibility of damaging the objects to be packaged during the unpacking operation, and the unpacking operation is efficient.

Further, when the work 10 to be packaged is taken out, it is convenient to place the annular package 40 on the rotary table 54 as shown in FIG. The rotary table has a size and strength capable of mounting the annular package 40 on its upper surface, and rotates about its center. By using this rotary table 56, the annular wrapping body 40
When pulling out the article to be packaged 10 from the package, simply by pulling the article to be packaged 10 outward, the rotary table 56 rotates,
The article 10 to be packaged can be easily and smoothly picked up, and twisting can be further prevented.

In the above embodiment, the sealing portion is formed over the entire outer circumference of the annular package, but this is not always necessary, and depending on the type and application of the article to be packaged 10,
Even by forming it on a part of the outer peripheral surface, it is possible to take out the article to be packaged 10 from that part.

Further, the sealing portion is not limited to one, and two or more sealing portions may be formed. If there is more than one, the number of tearing operations increases even when unpacking, but if the ring-shaped package is quite large, it will be easier to remove the packaging material and the work time may be shortened. Because there is also.

[0028]

EFFECTS OF THE INVENTION The present invention is characterized in that in a ring-shaped package in which a ring-shaped packaged object is surrounded by a heat-shrinkable sheet, a sealing portion having a low welding strength is formed on the outer peripheral surface thereof. Therefore, it is possible to easily unpack from the outer peripheral surface of the annular package, and it is possible to suppress the occurrence of twist of the packaged object.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a side sectional view showing an embodiment of the present invention.

FIG. 3 is a perspective view showing an embodiment of a method of using the annular package of the present invention.

FIG. 4 is a schematic view showing an example showing the manufacturing process of the annular package of the present invention.

FIG. 5 is a perspective view showing an example of a process of manufacturing the annular wrapping body of the present embodiment using the shrinking annular wrapping method.

FIG. 6 is a perspective view showing an example of a process of manufacturing an annular wrapping body by a general wrapping method.

FIG. 7 is a perspective view showing an example of a process of manufacturing an annular wrapping body by the shrink annular wrapping method.

FIG. 8 is a vertical sectional view (a) and a plan view (b) showing an example of an annular wrapping body.

9A and 9B are a longitudinal sectional view (a) and a plan view (b) showing one process of manufacturing the annular wrapping body of FIG.

FIG. 10 is an example showing a method of using the annular package.

[Explanation of symbols]

 10 Packaged object 11 Outer peripheral surface 13 Inner peripheral surface 14 Hollow part 15 Annular wrapping body 20 Cylindrical body 20 'Sheet 21 Joint part 30 Intermediate wrapping body 40 Annular wrapping body 42 Packing material 44 Outer peripheral surface 46 Sealing part 56 Rotating table

Claims (1)

[Claims] 1. An annular package in which an annular package is surrounded by a heat-shrinkable sheet, and a sealing portion having a low welding strength is formed on an outer peripheral surface of the package. .