JP2675246B2 - Annular package and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a package body in which various annular materials such as coils and tires are tightly packaged,
In particular, the present invention relates to an annular package that can be easily opened and a method for forming the same.

[0002]

2. Description of the Related Art Conventionally, as a method of closely packing various annular objects to be wrapped such as coils, tires and ring-shaped parts with a wrapping material, a paper or film tape is wrapped around an object to be wrapped by a wrapping machine. So-called gaiter-wrapping, which is wound in a spiral shape, or heat-sealing packaging using a heat-sealing packaging material is performed. Among them, 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 with a flat tape while maintaining a constant overlapping margin on the curved surface of the annular body. Since the tape is wound around, the slippage and looseness are likely to occur, and as a result, the packaging may collapse during handling and the packaged item may be exposed. For this reason, heat-seal packaging has come into common use recently.

FIG. 5 shows one process of the above heat-sealing packaging method. That is, this packaging method is generally shown in FIG.
As shown in (a), first, a heat-sealable packaging material wider than the outer peripheral surface 11 is tightly wound around the outer peripheral surface 11 of the annular packaged article 10 to form a cylindrical body 20. 20
Both end portions (sleeve) 31 and 31 ′ are bent along both side surfaces of the packaged object and inserted into the hollow portion 14 of the annular packaged object, and as shown in FIG. It heat-seals in 14 and seals both ends 31 and 31 'of the cylindrical body 20. However, in this method, a large number of folds or wrinkles 25 are generated in the packaging material that covers both side surfaces and the inner surface of the packaged object, impairing the external appearance, and reducing the volumetric efficiency of the obtained annular package.

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 (JP-A-2-233330)). This annular package is manufactured by a manufacturing method as shown in FIG. That is, as shown in FIG. 3 (a), first, a sheet 20 ′ of a heat-shrinkable packaging material, which is wider than the outer peripheral surface 11, is provided on the outer peripheral surface 11 of the annular package 10.
The sheet 20 'is tightly wound so that the contraction axis S of the sheet 20' coincides with the circumferential direction of the packaged object 10, the overlapping portions of the rolled sheets are joined to form the joint portion 21, and the remaining portion of the sheet is cut off. Then, the tubular body 20 of the packaging material is formed in close contact with the outer peripheral surface 11 of the object to be packaged. Next, the tubular body 20 is heated so that both end portions (sleeve) 31 and 31 ′ of the tubular body 20 are contracted along both side surfaces of the article to be packaged 10, respectively, and as a result, as shown in FIG. 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, from both sides of the intermediate package 30, as shown in FIG. 3C, the ring sealer 4 having an annular sealing surface along the inner peripheral surface of the article to be packaged 10.
0 and 40 'are inserted, and both end portions 31 and 31' of the tubular body are pressure-bonded by the sealing surface to form a protruding annular seam portion 24 as shown in FIG. 3 (d). . Further, an 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 package as shown in FIG. 3 (e). That is. This packaging method is hereinafter referred to as "shrink ring packaging method". The annular wrapping body obtained by this shrinkable annular wrapping method is formed so that the wrapping material is in close contact with the annular wrapping object, so that the appearance is good and the annular hollow portion is open, It is also convenient to carry a hand or a hook on this hollow part.

[0005]

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.
The present invention has been made to solve this problem, and therefore an object thereof is to provide an annular wrapping body manufactured by a shrinking annular wrapping method, which can be unpacked very easily. It is in.

[0006]

[Means for Solving the Problems] The above-mentioned problem is that an annular object to be packaged is surrounded by a tubular body of packaging material that is in close contact with the outer peripheral surface of the tubular article, and both ends of the tubular body are respectively wrapped with the article to be packaged. Is a packaging body that extends in close contact with both side surfaces and an inner peripheral surface of the inner peripheral surface, and has an annular seam portion that is fused and protruded inside the inner peripheral surface. Provided is an annular wrapping body which is formed with one or more non-fusing portions for tearing, which penetrates from the peripheral edge to the inner peripheral edge or does not penetrate to the outer peripheral side leaving a narrow seam portion on the inner peripheral side. It can be solved by doing. In the shrinkable annular wrapping method described above, the annular wrapping body, as a ring sealer, penetrates the annular sealing surface from the outer peripheral edge of the sealing surface to the inner peripheral edge, or does not penetrate to narrow the inner peripheral side portion. It can be manufactured by forming the above-mentioned non-fusion-bonded portion by using one in which one or more notches extending to the outer peripheral edge side while leaving the sealing surface of the width is formed. In the method for manufacturing the above annular package, the notch is arranged at a position sandwiching the end of the sheet joint formed when forming the tubular body, whereby the end of the sheet joint is It is preferably contained in the non-fused portion of the seam portion. An annular package manufactured by the above-mentioned manufacturing method, wherein the non-fusing part of the seam part is formed at a position including an end part of a sheet joining part formed at the time of forming a tubular body. It is preferable.

The heat-shrinkable packaging material used in the present invention is
It is a packaging material that can shrink in a certain axial direction when it is heated, and has heat sealability. 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.

[0008]

The annular package of the present invention has the projecting annular seam portion formed in the inner peripheral surface of the object to be packaged, which penetrates from the outer peripheral edge to the inner peripheral edge or does not penetrate the inner peripheral edge side. One or more non-fusing portions for tearing, which extend to the outer peripheral edge side while leaving a narrow seam portion in the portion, are formed. Therefore, at this non-fusing part, both ends of the tubular body are not fused, or even if they are fused, the fusing strength is weaker than the other parts of the seam part. At this time, a finger or a hook is hung on the non-fused portion to pull it, so that the packaging material can be torn and easily peeled from the article to be packaged. At this time, if the non-fusion-bonded portion is formed at a position including the end portion of the sheet joint portion formed when forming the tubular body, the sheet joint portion by heat sealing generally has a weak tear strength. Therefore, by pulling the non-fused portion, peeling or tearing of the sheet bonded portion becomes easy. Further, since the non-fused portion is formed in the inner peripheral surface of the annular wrapping body, it will not be inadvertently torn by an external force and will not be an obstacle in appearance.

In order to form such a non-fusion-bonded portion, a seal having a narrow width is formed on the side of the inner peripheral edge of the annular seal surface of the ring sealer, with or without penetrating from the outer peripheral edge to the inner peripheral edge. One having at least one notch extending to the outer peripheral edge side while leaving the surface is used. When this ring sealer is inserted from both sides of the intermediate package along the inner circumference of the packaged object, and both ends of the tubular body are pressure-bonded to each other, both ends of the tubular body are fused and protruded. An annular seam is formed, but no fusion occurs at the notch, so at this part of the seam,
A non-fusing part for tearing is formed penetrating from the outer peripheral edge to the inner peripheral edge, or without penetrating, leaving a narrow seam portion on the inner peripheral edge side and extending to the outer peripheral edge side.

[0010]

Next, an embodiment of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 shows an embodiment of the annular package of the present invention. In FIG. 1, 10 is an annular packaged object, 20
Is a tubular body of packaging material. The annular package of this example is
The annular packaged object 10 is surrounded by the tubular body 20 of the packaging material that is in close contact with the outer peripheral surface 11, and both ends (sleeve) 31, 31 ′ of the tubular body 20 are on both side surfaces 12 of the packaged article, respectively. , 12 'and the inner peripheral surface 13 are closely attached to each other and are fused to each other in the inner peripheral surface 13 to form a projecting annular seam portion 24. The seam portion 24 is formed with a non-fusing portion 60 for tearing that extends from the outer peripheral edge 25 to the inner peripheral edge 26 of the seam portion 24. The non-fusing part 60 is formed at a position including the sheet joining part 21. Inside the seam 24,
A fusing seal line 27 is formed by cutting and removing excess portions of both ends (sleeve) 31, 31 ′ of the tubular body 20.

Next, a method of manufacturing this annular package will be described with reference to FIGS. First, as shown in FIG.
A sheet 20 'of a heat-shrinkable packaging material wider than the outer peripheral surface 11 is closely attached to the outer peripheral surface 11 of the annular article 10 so that the contraction axis s of the sheet coincides with the circumferential direction of the object 10. Cylindrical body 2 of the packaging material that is wound and formed by joining the overlapped portions of the wound sheets to form a sheet joining portion 21 and cutting off the remaining portion of the sheet, which is in close contact with the outer peripheral surface 11 of the article to be packaged.
Form 0. Next, the tubular body 20 is heated so that both end portions 31 and 31 ′ of the tubular body 20 are shrunk along both side surfaces of the packaged object, whereby, as shown in FIG. 3 (b),
On both side surfaces of the article to be packaged 10, an intermediate package 30 having a tubular body opening 22 having a diameter smaller than the inner diameter thereof is formed.

Next, from both sides of the intermediate package 30,
As shown in FIG. 2A, ring sealers 50 and 50 ′ having annular sealing surfaces 51 and 51 ′ are inserted along the inner peripheral surface 13 of the article to be packaged 10, and the sealing surfaces 51 and 51 ′ are inserted.
Thus, both ends 31, 31 ′ of the tubular body 20 are pressed and fused together to form the annular seam portion 24. At this time, as the ring sealers 50, 50 ', those having notches 54, 54' extending from the outer peripheral edge 52 to the inner peripheral edge 53 of the annular seal surfaces 51, 51 'are formed. The cutouts 54, 54 ′ are used and are arranged at positions sandwiching the end of the sheet joint portion 21. by this,
The non-fusing portion 60 is formed at a position including the sheet joining portion 21. The width of the annular sealing surfaces 51, 51 'of the ring sealer in this example was 5 mm, the notch widths of the notches 54, 54' extending through this width were 40 mm, and the depths of the notches were 1.5 mm, respectively.

The annular package thus obtained has a seam portion 2
The excess portion 29 of the tubular body 20 left inside 4 is melt-fused with 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.

(Embodiment 2) FIG. 4 (a) shows an annular package of Embodiment 2. This annular package is a package formed in the same manner as in Example 1. However, the seam portion 24 ′ is formed with a non-fusing portion 60 ′ that extends to the outer peripheral edge 25 side while leaving the narrow seam portion 28 on the inner peripheral edge 26 side portion. The non-fusing part 60 ′ is formed at a position including the sheet joining part 21. The annular package of Example 2 is manufactured by the same method as that of Example 1, except that the ring sealer 50, 50 ′ shown in FIG.
As shown in FIG. 5, the annular sealing surfaces 51, 51 'do not penetrate from the outer peripheral edge 52 to the inner peripheral edge 53 of the sealing surface, and the narrow sealing surfaces 55, 55' are left on the inner peripheral edge 53 side. The cutouts 54, 54 'extending toward the outer peripheral edge 52 side are used, and the cutouts 54, 54' are arranged at positions sandwiching the end of the sheet joint portion 21. As a result, at the position including the sheet joining portion 21, the non-fusion-bonding portion 6 is formed.
0 'is formed.

In the annular packages of Examples 1 and 2, when the non-fused portion 60 or 60 'was pulled by a finger, both were torn from the vicinity of the intersection between the fusion-sealing line 27 and the sheet joint portion 21, The packaging material can be easily peeled from the article to be packaged 10. Therefore, it is obvious that Examples 1 and 2 are annular packages which are manufactured by the shrink annular packaging method and can be extremely easily unpacked even though the annular objects are closely packed. . In each of the above-mentioned embodiments, the non-fusing part 60 or 60 'is formed only at one place of the annular seam part 24 or 24', but it may be formed at two or more places. . Further, the above-mentioned sheet joint portion 21 may also be formed at two or more portions of the annular package. In this case, the non-fusing part 60 or 60 ′ is preferably formed at a position including at least one end of the sheet joining part.

[0016]

According to the ring-shaped package of claim 1, both ends of the tubular body of the packaging material are fused within the inner peripheral surface of the ring-shaped package,
A package formed with a protruding annular seam portion, which penetrates from the outer peripheral edge to the inner peripheral edge of the seam portion, or does not penetrate the outer peripheral edge side leaving a narrow seam portion on the inner peripheral edge side portion. The extended non-fusing part for tearing is formed when the tubular body is formed.
Since it is formed at a position including the end portion of the formed sheet joining portion, even if the article to be packaged is tightly wrapped, a finger or a hook may be attached to the non-fusing portion. By hanging and peeling off, there is an effect that the packaging material can be easily peeled from the article to be packaged. The method for manufacturing an annular wrapping body according to claim 2 is such that, instead of the ring sealer in the conventional shrinkable annular wrapping method, the sealing surface penetrates from the outer peripheral edge to the inner peripheral edge, or does not penetrate, and has a narrow width on the inner peripheral side. Using a ring sealer with a notch extending to the outer peripheral edge leaving the sealing surface of, the notch is formed at the time of forming the tubular body.
Since it is arranged at a position sandwiching the end portion of the sheet joining portion, no special device or operation is required, no extra cost is required, and it is extremely inexpensive and easy.
Can be manufactured. Claims
The annular wrapping body according to No. 3 has a narrow width sheet on the inner peripheral edge side.
The non-fused part for tearing is formed leaving the
The packaged material is sealed by the packaging material.
The packaged items are shielded from the outside and dust
It is possible to easily perform unpacking while preventing this. Claim
According to claim 3, which is the method for producing the annular package according to item 4.
The annular package does not require any special device or operation, and
Extremely cheap and easy without extra cost
Can be manufactured.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view (a) and a plan view (b) showing an embodiment of an annular package of the present invention.

FIG. 2 is a vertical sectional view (a) and a plan view (b) showing one process of manufacturing the embodiment of FIG.

FIG. 3 is a perspective view showing an example of a process of manufacturing an annular wrapping body by the contraction annular wrapping method.

FIG. 4 is a plan view (a) showing another embodiment of the annular wrapping body of the present invention and a longitudinal sectional view (b) showing one process of manufacturing the same.

FIG. 5 is a perspective view showing an example of a process of manufacturing an annular package by a general packaging method.

[Explanation of Codes] 10 ... Object to be packaged, 11 ... Outer peripheral surface, 12, 12 '... Side surface,
13 ... Inner peripheral surface, 20 ... Cylindrical body, 24 ... Seam portion, 31,
31 '... Cylindrical body end, 50, 50' ... Ring sealer,
51, 51 '... annular sealing surface, 52, 52' ... outer peripheral edge,
53, 53 '... Inner peripheral edge, 54, 54' ... Notch, 60 ... Non-fused part.

Claims (4)

(57) [Claims] 1. A ring-shaped object to be packaged is formed from a joined sheet.
It is surrounded by a tubular body that is in close contact with the outer peripheral surface of the packaged object , and both ends of the tubular body extend in close contact with both side surfaces and the inner peripheral surface of the packaged object, and within this inner peripheral surface A packaging body in which an annular seam portion that is fused and protruded is formed, and the seam portion penetrates from the outer peripheral edge of the seam portion to the inner peripheral edge, or does not penetrate and has a narrow width on the inner peripheral edge side. The non-fusing part for tearing that extends to the outer peripheral edge side leaving the seam part of the end part of the sheet joining part formed at the time of forming the tubular body
An annular wrapping body, which is formed at a position including the wrapping body. 2. A sheet of heat-shrinkable packaging material wider than the outer peripheral surface is tightly wound around the outer peripheral surface of the annular object to be packaged so that the contraction axis of the sheet coincides with the circumferential direction of the packaged object. ,
The overlapping parts of the rolled sheets are joined to form a sheet joining part, and the remaining part of the sheet is cut off to form a tubular body of packaging material that is in close contact with the outer peripheral surface of the object to be packaged. The shaped body is heated, and both ends thereof are contracted along both side surfaces of the packaged object, whereby both side surfaces of the packaged object are contracted.
An intermediate wrapping body having a tubular body opening with a diameter smaller than its inner diameter is formed, and then a ring sealer having an annular sealing surface is inserted from both sides of the intermediate wrapping body along the inner peripheral surface of the packaged object. Then, in the manufacturing method of the annular wrapping body in which both ends of the tubular body are sandwiched and pressure-bonded to each other to form the annular seam portion by the sealing surface, the annular sealing surface is provided on the annular sealing surface as the ring sealer. through to the inner periphery from the outer peripheral edge, or cutouts extending the outer peripheral edge side while leaving the sealing surface having a width on the inner circumference side without penetration with those formed one or more, 該切
The cutout is the end of the sheet joint formed when forming the tubular body.
Place it in a position that sandwiches the
A method for producing an annular package , which comprises forming a portion . 3. An annular packaged object is surrounded by a tubular body of packaging material that is in close contact with its outer peripheral surface, and both ends of this tubular body are in close contact with both side surfaces and inner peripheral surface of the packaged object. A packaging body formed with a protruding annular seam portion that is fused with each other in the inner peripheral surface and protrudes from the outer peripheral edge to the inner peripheral edge of the seam portion. An annular packaging body, characterized in that one or more non-fusing portions for tearing extending to the outer peripheral edge side are formed while leaving a narrow seam portion on the inner peripheral edge side. 4. A sheet of heat-shrinkable packaging material, which is wider than the outer peripheral surface, is tightly wound around the outer peripheral surface of the annular object to be packaged so that the shrink axis of the sheet coincides with the circumferential direction of the packaged object. ,
The overlapping parts of the rolled sheets are joined to form a sheet joining part, and the remaining part of the sheet is cut off to form a tubular body of packaging material that is in close contact with the outer peripheral surface of the object to be packaged. The shaped body is heated, and both ends thereof are contracted along both side surfaces of the packaged object, whereby both side surfaces of the packaged object are contracted.
An intermediate wrapping body having a tubular body opening with a diameter smaller than its inner diameter is formed, and then a ring sealer having an annular sealing surface is inserted from both sides of the intermediate wrapping body along the inner peripheral surface of the packaged object. Then, in the manufacturing method of the annular wrapping body in which both ends of the tubular body are sandwiched and pressure-bonded to each other to form the annular seam portion by the sealing surface, the annular sealing surface is provided on the annular sealing surface as the ring sealer. The non-fusing part is formed by using one in which one or more notches are formed which do not penetrate from the outer peripheral edge to the inner peripheral edge but leave a narrow sealing surface on the inner peripheral edge side and extend to the outer peripheral edge side. The manufacturing method of the annular package.