JP2656011B2 - Annular package - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an annular package in which plastic packaging materials are joined by heat sealing, and is capable of preventing a heat seal portion from being broken during transportation and handling.

[0002]

2. Description of the Related Art Conventionally, in packaging using a plastic packaging material, adhesion between the packaging materials by heat sealing has been widely used. This heat seal is usually a continuous linear heat seal, and one or more heat seals are performed. More than one heat seal is performed, especially for food packaging, vacuum packaging,
It is often used to prevent leakage of contents due to uneven sealing of a heat seal portion such as gas-filled packaging and water-based packaging.

[0003]

However, in such a heat seal, breakage at the boundary between the heat-sealed portion and the unsealed portion that does not receive heat, that is, so-called breakage of the seal portion is apt to occur. As a method of preventing the root from being cut off, there is a method of lowering the temperature at the time of heat sealing. However, in this method, it is extremely difficult to control the sealing conditions such as the temperature and time of the heat sealing, so that the sealing portion is peeled off. It is easy to cause problems such as becoming easy.

[0004] The problem of root breakage of the seal portion does not usually cause a problem if the packaged material is light, but the problem is more likely to occur as the packaged product becomes heavier. For example, even when the present inventors package a tire by the method of packaging a ring-shaped article proposed in Japanese Patent Application No. 1-55580, the above-described seal portion may break. Handling of tires,
The unloading operation may be performed by rolling the tire from a luggage carrier having a height of 1 to 1.5 m and dropping the tire to the ground, and the tire is deformed when the tire is dropped. In the case of bulk transport of trucks, the tires may be accidentally dropped because the tires are piled up to a height of about 2 m. In this case, the tires are greatly deformed by a drop impact. When the tire is deformed in this way, the more the package is tightly packed, the more easily the package is broken, and the broken portion is concentrated on the heat seal portion. That is, root breakage of the seal portion occurs. A package in which the root of the seal portion has been broken in this way may sometimes be severely broken so as not to make sense of the package.

[0005] Further, in the above-mentioned annular package, when a packaged product such as a rope, an electric wire, a rubber hose, or the like is wound in a coil shape, or a product in which a plurality of coiled products are wound, this is also used. In addition, there is a problem that the heat seal portion breaks due to deformation caused by bending or dropping when handling a load.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a ring-shaped package body that can be prevented from being broken from a heat-sealed portion and can maintain a packaging form.

[0006]

According to the present invention, there is provided an annular package body in which an outer peripheral portion of an annular packaged object is formed by two parallel heat seals of two heat-shrinkable packaging materials . S
Covered by the outer peripheral wrapping portion integrated by sleeve seal portion, both ends faces of the packaged articles is a packaging material that covers the outer peripheral portion is covered by the end surface wrapping portion formed by the sleeve packing for heat shrinkage, the material to be packaged the inner peripheral portion, pushing the sleeve-forming portion formed inside the end surface wrapping portions by the sleeve wrapping along the outer to the inner circumferential surface of the packaged articles, formed by heat sealing in a ring shape in an inner circumferential surface Ring
Covered by inner packaging unit joined by the seal portion, before
At least one of the sleeve seal and the ring seal
But having parallel sealing two or more rows, of which at least one row is from the point seal, and at least one row of linear seals are arranged string consisting of the side to the point seal closer to the packaged articles, the point seal Between each point seal in the row
The gap is 0.5 to 10 with respect to the length of the point seal .

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a package in which an annular article is packaged, using a heat-shrinkable packaging material, heating the package, and wrapping the sleeve. It is sealed and packaged by pushing along the inner peripheral surface of the object and heat sealing. Moreover, in a heat seal having two or more rows of heat seals, at least one of which is a point seal, and at least one of which is a line seal, the side on which stress is applied, that is, the seal portion is cut off. By providing a row of point seals on the side close to the package, even if stress is applied to the extent that the seal breaks, the space between the row of point seals and the row of line seals absorbs the stress. Since the heat seal portion is torn, the heat seal portion is torn only when the point seal is broken and a small hole is formed in a point-like manner, and the other seal portion is not broken without propagation of the tear.
Therefore, the shape of the heat-sealed portion is maintained, and does not lead to a large tear that impairs the packaging.

Hereinafter, a more detailed description will be given. In the present invention, the heat seal portion has two or more seals, at least one of which is a point seal row (hereinafter referred to as a point seal row), and one row is a line seal row (hereinafter, referred to as a line seal row). It is a row of line seals.) This point seal row is
The heat seal portion is provided on the side where stress is applied, that is, on the side where the seal portion is cut off. Therefore, of the two or more seals, at least one point seal row may be provided on the side to which stress is applied, and at least one line seal row may be provided on the other side. A seal row or a point seal row may be further provided.
Further, the shape of each of the point seals constituting this point seal row is preferably a rectangle or a square, and particularly preferably a rectangle with rounded corners, but is not limited to this.For example, a circle, an ellipse, a star And so on.

FIG. 1 shows an example of the heat seal portion of the annular package. This heat-sealed part is a point seal row 1
And a line seal row 2. The point seal row 1 is formed by connecting the point seal portions 3 in the longitudinal direction of the heat seal portion. Here, in this heat seal portion, stress is applied from the side of the point seal row 1 so that the seal portion is cut off. The size and shape of the point seal portion 3 are determined in consideration of the size and shape of a broken hole generated when the point seal portion 3 is broken,
When the length in the longitudinal direction of the heat seal portion of the point seal portion 3 is A and the width is B, a shape in which A / B = 1 to 10 is preferable in terms of the shape of the damaged hole and the like. Also,
The distance between the point seal portion 3 and the point seal portion 3, strength required for the heat-sealed portion, i.e., is to be determined by the stress applied to the heat-sealed portion, the point seal length A
, Ie, the point seal portion 3
When the distance between the point seal portion 3 and C is C, C / A =
It is preferably from 0.5 to 10 from the viewpoint of its strength.

Further, the distance between the point seal row 1 and another seal row (in this case, the line seal row 2) is determined by the amount of deformation of the packaged object and the stress acting on the heat sealing portion due to the deformation. Is set in consideration of the above, and when the deformation amount and the stress are large, it is necessary to increase the interval. Therefore, when the distance between the point seal row 1 and the other seal rows is D, it is preferable that D / A ≧ 0.5. In the line seal row 2, since the boundary between the sealed portion and the unsealed portion is the weakest and is easily broken, the seal width does not significantly affect the strength. Therefore, in the line seal row 2, it is not necessary to increase the width, and a seal width of about 2 to 5 mm is sufficient. Rather, a narrow width is preferable because the appearance is better. As such a heat sealing method for performing a point seal or a line seal, for example,
Hot plate seals, impulse seals, ultrasonic seals, high frequency seals, and the like can be given. In addition, any of the point seal or the line seal may be heat-sealed first,
It may be performed simultaneously.

As the plastic wrapping material used for the annular package of the present invention, any wrapping material can be used as long as it can be heat-sealed. A yarn cloth, a nonwoven fabric, a flat yarn knitted woven fabric, a filament knitted woven fabric, a split uniaxially stretched product which is bonded with its orientation axis crossing or the like, or a composite material thereof with a cloth, paper, or the like is suitably used. As the shape of the article to be packaged in the present invention, for example, the article to be packaged may be an annular material in which a tire, an electric wire, or the like is wound in a coil shape. As a method of packing such an annular material by heat sealing, the method proposed by the present inventors (Japanese Patent Application No. 1-55580) is used as described above.

A method for forming the annular package of the present invention using the packaging method by heat sealing this annular material will be described below. First, as shown in FIG. 2, the cloth is pulled out from two wound rolls of a heat-shrink cloth 5 (hereinafter, referred to as a cloth), and is separated from a sleeve seal hot plate 6 and a sleeve seal receiving plate 7. The ends are heat-sealed and joined by a sleeve hot plate sealing machine 8, and an annular member 4 such as a tire is passed between the two rolls, along the outer peripheral surface of the annular member 4. Ring 5 with cloth 5
Further, the cloths 5 are heat-sealed with each other to integrate the two cloths 5 to obtain a cylindrical cloth 5 containing an annular material in the center in the width direction. The two parallel linear heat seal portions at the front and rear portions are referred to as a sleeve seal portion 9.

Next, as shown in FIG. 3, a heat treatment is applied to the cylindrical cloth 5 containing the ring-shaped material 4 in the center in the width direction, and the sleeve cloth is wrapped by heat contraction. The sleeve package by the cloth 5 is referred to as an intermediate package 10.
The intermediate package 10 has an outer peripheral wrapping portion 11 for wrapping the outer periphery of the annular material, and two end wrapping portions 12 and 12 for wrapping the end surfaces of the annular material.
Sleeve openings 13 and 13 are formed at the center portions of the sleeve openings 2 and 12, respectively.
The size of the cloth 5 in advance so as to be smaller than the inner diameter of
It is adjusted by the shrinkage ratio and the like.

Thereafter, as shown in FIGS. 4 and 5, a sleeve is formed on the inner side of the end wrapping portions 12, 12 of the intermediate package 10 and on the inner side of the inner diameter of the packaged object formed by the sleeve wrapping. Part is pushed in from the outside along the inner peripheral surface of the packaged object, and the ring-shaped hot plate 14 and the ring receiving plate 1 are pressed.
The heat sealing is carried out by a ring-shaped hot plate sealing machine 16 composed of 5. This ring-shaped seal portion is
7 is assumed. By heat-cutting the unnecessary cloth 5 on the inner diameter side from the ring seal portion 17, two sleeve seal portions 9 perpendicular to the circumferential direction on the outer peripheral surface and the ring seal portion 14 extending circumferentially on the inner peripheral surface. Is completed. The sleeve seal portion 9 is formed by heat sealing with a sleeve seal hot plate 6 and a sleeve seal receiving plate 7 of a sleeve hot plate sealing machine 8. FIG. 6 shows a part of the sleeve seal hot plate 6 and FIG. 7 shows a part of the sleeve seal part 9.

[0015] As shown in FIG.
A rectangular plate-shaped substrate 18, a long wall-shaped line seal portion forming body 19 provided continuously on one long side of the surface thereof,
And a number of prism-shaped point seal portion forming bodies 20 provided at regular intervals on other long sides. The sleeve seal receiving plate 7 has a planar shape substantially equal to the planar shape of the sleeve seal hot plate 6 and a flat surface. Heated sleeve seal hot plate 6
The cloth 5 is arranged between the sleeve seal receiving plate 7 and the plate-shaped sleeve seal receiving plate 7, and the sleeve seal hot plate 6 and the sleeve seal receiving plate 7 are pressed to form the sleeve seal portion 9. As shown in FIG. 7, the linear sleeve seal portion 9 includes a point seal row 1 and a line seal row 2 provided at a constant interval. It is formed so as to be on the side of the ring-shaped object.

The ring seal portion 17 is formed by heat sealing the ring-shaped hot plate 14 and the ring-shaped receiving plate 15 of the ring-shaped hot plate sealing machine 16. A part of the ring-shaped hot plate 14 is shown in FIG. 8, and a part of the ring seal part 17 is shown in FIG. As shown in FIG. 8, the ring-shaped heating plate 14 includes a ring-shaped substrate 21 having an annular planar shape and a ring-shaped line having a rectangular cross-section provided continuously on the inner periphery of the surface thereof. A seal portion forming body 22 and a substantially prismatic ring-shaped point seal portion forming body 23 provided at regular intervals on the outer periphery of the surface of the ring-shaped substrate 21. The ring-shaped receiving plate 15 has a planar shape substantially equal to the planar shape of the ring-shaped hot plate 14 and a flat surface. A cloth 5 is arranged between the heated ring-shaped hot plate 14 and the ring-shaped receiving plate 15, and by pressing them, the ring seal portion 1 is formed.
7 is formed. As shown in FIG. 9, the annular ring seal portion 17 includes a point seal row 1 and a line seal row 2 provided at a fixed interval. Is provided on the annular object side.

According to the present invention as described above, for example, when the object to be packaged is a tire or a rope wound in a ring or the like, and the object to be packaged is deformed due to a drop impact, etc. The point seal row 1 formed on the tire side of the sleeve seal portion 9 is torn to the extent that the package is loosened at that portion, and the whole package does not become loose. In addition, the line seal portion forming body and the point seal portion forming body are each a separate sleeve seal hot plate,
Alternatively, the annular package of the present invention can also be obtained by providing a separate ring-shaped hot plate and forming a sleeve seal portion or a ring seal portion by using them. At this time, the line seal portion and the point seal portion can be formed simultaneously, or one of them can be formed first. Further, according to the method for manufacturing the annular package,
Since the annular objects to be packaged can be successively covered with the packaging material and packaged, the packaging can be automated, which is excellent in mass productivity and high in productivity. Also this at least wire seal
Heat seal of multiple rows including rows and point seal rows,
The sleeve seal or ring seal described above
Either or both can be applied. Any or
Either type should be considered in view of the type of packaged material and simplification of the packaging process.
Selected. That is, the ring seal is
If it is easier to break than the
It is better to apply multiple types of heat sealing, and conversely, sleeve
If the seal is easier to break than the ring seal,
Applying the heat seal to the sleeve seal
However, it is important to ensure that
The multiple types are placed on both the sealing seal and the sleeve seal.
It is good to perform heat sealing.

[0018]

EXAMPLES Hereinafter, the annular package of the present invention will be described with reference to Examples and Comparative Examples. In the following Examples and Comparative Examples, the above-described method for packing a circular object was used as a packing method.

(Embodiment 1) The annular member 4 has an outer diameter of 660.
mm, inner diameter 355mm, tread width 185mm (185R1
Using the tire of 4), as the cloth 5, the shrinkage ratio is 60%.
A heat-shrinkable cloth obtained by extrusion-laminating a low-density polyethylene resin on a polyolefin-based shrinkable flat yarn cross-woven cloth having a width of 850 mm (110 ° C. × 1 minute) was used. As the sleeve seal hot plate 6 of the sleeve hot plate sealing machine 8 forming the sleeve seal portion 9, the shape of the surface of the point seal portion forming body 20 is set such that the length (K) of the sleeve seal hot plate 6 in the longitudinal direction is 10 mm. The length (L) of the sleeve seal hot plate 6 in a direction perpendicular to the longitudinal direction is 3 mm, and the interval (M) between the point seal portion forming bodies 20 is 20 mm. The distance (N) between the wire seal portion forming body 19 and the line sealing portion forming body 19 is 4 mm, and the width of the line sealing portion forming body 19 is 3 mm.
Was used. Using the sleeve seal hot plate 6 and the sleeve seal receiving plate 7 having such a shape, 180 ° C. ×
Perform heat compression bonding for 3 seconds to form a sleeve seal portion 9,
A cylindrical cloth 5 in which the annular member 4 was stored at substantially the center in the width direction was obtained.

The cylindrical cloth 5 is heated in a heating furnace at 200 ° C. for 15 seconds to perform sleeve packaging, and the intermediate package 1
0 was obtained. As the ring-shaped hot plate 14 of the ring-shaped hot plate sealing machine 16 forming the ring seal portion 17, the surface shape of the ring-shaped point seal portion forming body 23 is such that the circumferential length (K) is 15 mm, the radial direction is Length (L) is 3 mm, and the interval (M) between the ring-shaped point seal portion forming bodies 23, 23 is 10 mm.
The distance (N) between the ring-shaped point seal portion forming member 23 and the ring-shaped line seal portion forming member 22 was 12 mm, and the width of the ring-shaped line seal portion forming member 22 was 5 mm. Using the ring-shaped hot plate 14 and the ring-shaped receiving plate 15 having such a shape, heat compression is performed at 180 ° C. for 2 seconds,
By forming the ring seal portion 17 and heat-cutting the unnecessary cloth 5 on the inner peripheral side of the ring seal portion 17,
An article to be packaged was obtained as a tire package. This annular package was a tight package along the outer diameter of the tire.

Regarding the annular package of the tire, 1.
Drop tests were performed from heights of 5 m and 2.5 m, and the state of tearing of the heat-sealed portion after drop was evaluated. Table 1 shows the results. The drop test was performed in a state where the ring was set upright, that is, when the ring was a tire, the tread surface was in contact with the ground. In addition, the amount of change in the dimensions around the trunk (the length corresponding to the outer peripheral portion of the cross section of the annular body) when dropped was measured. Table 2 shows the results. The amount of change was also measured for other types of tires, and the results are also shown in Table 2. According to the method of measuring the amount of change, first, a string is wound along the circumference of a ring-shaped body so that there is no thickening in a manner of forming a lasso loop. Next, in this state, a drop test is performed from a predetermined height so that the portion where the string is wound is grounded. At the time of the drop test, the ring is deformed and the circumference of the body becomes longer, so that the loop of the string wound around the body of the ring becomes larger. The loop of the string
Since this state is maintained even after the drop test, the amount of change is obtained by measuring the length of the loop of the string after the drop test and comparing it with the previously measured length of the circumference of the annular body. This change amount is used for setting the interval between the point seal row 1 and the line seal row 2.

(Example 2) As an annular material 4, a rope in which a polyethylene monofilament was twisted was wound in a coil shape.
Five rolls of this roll were stacked and tied with a string. This shape had an outer diameter of 380 mm, an inner diameter of 150 mm, and a width of 740 mm. As the cloth 5, the same material as in Example 1 was used, but the cloth 5 having a width of 950 mm was used. The sleeve seal portion 9 is formed in the same manner as in the first embodiment.
A cylindrical cloth 5 having an annular body 4 at the center in the width direction was obtained. This cylindrical cloth 5 is heated at 200 ° C. × 1 by a heating furnace.
By heating for 3 seconds and shrink-wrapping, an annular package was obtained. Using this annular package, a drop test was performed in the same manner as in Example 1. Table 1 shows the results.
Further, the amount of change around the waist was measured in the same manner as in Example 1. Table 2 shows the results.

(Embodiment 3) The shape of the surface of the point seal portion forming body 20 is such that the length (K) of the sleeve seal hot plate 6 in the longitudinal direction is 3 mm, and the length (L) in the vertical direction is 2 mm.
The distance (M) between the point seal portion forming bodies 20 and 20 is 10 mm, and the distance (N) between the point seal portion forming body 20 and the line seal portion forming body 19 is 5 mm. Using the sleeve seal hot plate 6 with the formed body 19 having a width of 3 mm, the shape of the surface of the ring-shaped point seal portion formed body 23 was changed to a circumferential length (K) of 3 mm and a radial length (L). Is approximately 2 mm, the interval (M) between the ring-shaped point seal portions 23, 23 is 22 mm, and the ring-shaped point seal portion formed body 23 and the ring-shaped line seal portion formed body 22
A ring-shaped package was obtained in the same manner as in Example 1, except that the interval (N) between the two was 15 mm, and the ring-shaped hot plate 14 was used, in which the width of the ring-shaped line seal portion forming body 22 was 3 mm. Using this annular package, a drop test similar to that in Example 1 was performed. Table 1 shows the results.

Embodiment 4 Embodiment 2 is the same as Embodiment 3 except that the sleeve seal hot plate 6 and the ring-shaped hot plate 14 are used.
In the same manner as in the above, an annular package was obtained. Using this annular package, a drop test similar to that in Example 1 was performed.
Table 1 shows the results.

(Comparative Example 1) A line seal portion forming body is provided in place of the point seal portion forming body 20 of the sleeve seal hot plate 6,
The width of the two line seal portion forming bodies is 3 mm, the interval between the two line seal portion forming bodies is 4 mm, and a ring-shaped line seal portion forming body of the ring-shaped hot plate 14 is used instead of the ring-shaped point seal forming body. Provided, the width of these two line seal portion forming bodies is 5 mm,
An annular package was obtained in the same manner as in Example 1, except that the distance between the two ring-shaped line seal portion forming bodies was 10 mm.
Using this annular package, a drop test similar to that in Example 1 was performed. Table 1 shows the results.

Comparative Example 2 Example 2 was repeated except that the sleeve seal hot plate 6 and the ring-shaped hot plate 14 of Comparative Example 1 were used.
In the same manner as in the above, an annular package was obtained. Using this annular package, a drop test similar to that in Example 1 was performed.
Table 1 shows the results.

(Comparative Example 3) The sleeve seal hot plate 6 was set to a width 5
mm line seal portion forming body 19 only,
Was obtained in the same manner as in Example 1 except that only the ring-shaped line seal portion-formed body having a width of 5 mm was used. Using this annular package, a drop test similar to that in Example 1 was performed. Table 1 shows the results.

Comparative Example 4 Example 2 was repeated except that the sleeve seal hot plate 6 and the ring-shaped hot plate 14 of Comparative Example 3 were used.
In the same manner as in the above, an annular package was obtained. Using this annular package, a drop test similar to that in Example 1 was performed.
Table 1 shows the results.

(Comparative Example 5) The sleeve seal hot plate 6 was set to a width 1
Only the line seal portion forming body 19 of 0 mm
A ring-shaped package was obtained in the same manner as in Example 1, except that only the ring-shaped line seal portion-formed body having a width of 10 mm was used. Using this annular package, a drop test similar to that in Example 1 was performed. Table 1 shows the results.

Comparative Example 6 Example 2 was repeated except that the sleeve seal hot plate 6 and the ring-shaped hot plate 14 of Comparative Example 5 were used.
In the same manner as in the above, an annular package was obtained. Using this annular package, a drop test similar to that in Example 1 was performed.
Table 1 shows the results.

[0031]

[Table 1] In Table 1, the evaluation criteria for the finished packaging state are as follows: ○: tight feeling and good appearance △: good appearance but no tight feeling ×: no tight feeling and poor appearance The evaluation criteria for the drop test are: ◎: breakage ○: The size of the damage was 10 mm or less △: The size of the damage was 20 mm or less ×: The size of the damage exceeded 20 As a calculation standard of the damage rate, the length of the break exceeded 10 mm. Things were damaged.

[Table 2]

As shown in Table 1, in the ring-shaped package obtained in Comparative Examples 1, 3 and 5 using a tire as a packaged object, about 40% of the ring-shaped package was dropped from a height of 1.5 m. Something breaks due to root breakage of the ring seal portion 17,
About 15% of the sleeve seal portions 9 were broken.
The size of the torn portion ranged from 25 mm to 230 mm along the heat seal, and was meaningless for packaging. Further, in the case of falling from a height of 2.5 m, all of them caused the root seal to break at the ring seal portion 17 and about 60% of the cases caused the sleeve seal portion 9 to break. The torn length at this time was even larger than that of 1.5 m, and was 60 mm to 280 mm.

On the other hand, the annular package obtained in Example 3
When falling from the height of 1.5 m, 80% of the holes had small holes in the point seal portion of the ring seal portion 17, but no breakage of 5 mm or more was 0, and the number of small holes was about 7 to 20cm
5 to 10 over the range, but the packaging form was sufficiently maintained. Further, the sleeve seal portion 9 was not broken. In the case of dropping from a height of 2.5 m, small holes were formed in the point seal portions of all the ring seal portions 17, but the size was 5 mm or less, and the number was in the range of about 15 to 27 cm. 8 to 15 over
Was individual. However, the line seal portion was not broken, and the sleeve seal portion 9 was not broken.

As the articles to be packaged, about 15% of the packages obtained in Comparative Examples 2, 4 and 6 were obtained by dropping from a height of 1.5 m. 20
The root of the seal portion of the sleeve seal portion 9 was broken over a length of about 180 mm. Furthermore, about 40% of those falling from a height of 2.5m are 40-230mm.
Root breakage of the sleeve seal portion occurred over the length of. On the other hand, 20% of the ring-shaped package obtained in Example 4 dropped from a height of 1.5 m had small holes in the point seal portion, but there was no large tear of 5 mm or more. The number of small holes was 6 to 22 over a range of about 70 to 220 mm, but the packaging form was sufficiently maintained. In addition, if it falls from a height of 2.5 m,
5% of the spot seals had small holes in the point seal portion, but the size was 5 mm or less, and the number was 10 to 27 over the range of about 110 to 270 mm. However, there was no breakage of the wire seal portion, and the packaging form was sufficiently maintained.

[0035]

The present invention is an invention of the annular object to be packaged sealed packaged cyclics package has two or more rows of seal, at least one row is from the point seal, and at least one row is The packaging material is joined by the heat seal, which is a line seal , and each point seal in the row of point seals
The interval between the cattle is set to 0.5 to 10 with respect to the length of the point seal, so that the annular object to be packaged can be tightly packed with the packaging material and tightly bound, so that foreign matter can enter from outside. In addition to preventing the occurrence of scratches on the packaged object, the shape of the packaged object can be determined from the appearance. Further, automation of packaging can be achieved, and cost can be reduced by reducing labor and time.
Also, when the object to be packaged is a wire such as an electric wire wound in a coil shape, when used, a part of the packaging material is cut open,
It is possible to take out only a necessary amount of the linear material and pack the rest, and the like, so that convenience during use can be improved. Further, even in the case of tight-binding packaging, tearing from the heat-sealing portion, that is, so-called breakage of the seal portion does not occur, and the packaging form can be maintained without impairing the packaging even with a somewhat rough handling.

Accordingly, the annular package of the present invention is extremely useful for a package such as an annular article or a tire, which is formed by winding a wire, a rope, a hose, or the like, which is likely to be deformed or misaligned by handling. is there.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a heat-sealed portion of an annular package of the present invention.

FIG. 2 is a schematic perspective view for explaining a packaging method.

FIG. 3 is a schematic perspective view for explaining a packaging method.

FIG. 4 is a schematic perspective view for explaining a packaging method.

FIG. 5 is a schematic perspective view for explaining a packaging method.

FIG. 6 is a perspective view showing an example of a sleeve seal hot plate.

FIG. 7 is a schematic perspective view showing an example of a sleeve seal portion.

FIG. 8 is a schematic perspective view showing an example of a ring-shaped hot plate.

FIG. 9 is a schematic perspective view showing an example of a ring seal portion.

[Explanation of symbols]

 1 point seal row 2 line seal row 3 point seal section

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshihiko Watanabe 4-1 Nihonbashi Kobunacho, Chuo-ku, Tokyo Inside Heisei Polymer Co., Ltd. (56) References Japanese Utility Model Application Sho 61-45356 (JP, U)

Claims (1)

(57) [Claims] 1. An outer peripheral portion of an annular packaged object is formed by two parallel heat seals of two heat-shrinkable packaging materials.
Both ends of the article to be packaged are covered with an end face wrapping part formed by a sleeve wrapping for thermally shrinking the wrapping material covering the outer circumference, and covered by an outer wrapping part integrated by the formed sleeve seal part. The inner peripheral portion of the package is pressed along the inner peripheral surface of the packaged object from the outside into the sleeve forming portion formed inside the end surface packaging portion by the sleeve packaging, and heat-sealed in a ring shape on the inner peripheral surface. Covered with an inner peripheral wrapping part joined by a ring seal part formed by the above, and at least one of the sleeve seal part and the ring seal part.
It is, having parallel sealing two or more rows, of which at least one row is from the point seal, and at least one row is a line seal, the column <br/> is made from the side to the point seal close to be packaged Of each point seal in the row of point seals
An annular package having an interval of 0.5 to 10 with respect to the length of the point seal .