JP3236824B2 - Package and heat-shrinkable packaging material - 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 and a heat-shrinkable packaging material which are mounted on a container by heating a packaging material such as a heat-shrinkable label and a cap seal.

[0002]

2. Description of the Related Art Conventionally, the mouth of a container filled with a soft drink or the like is closed by a cap, and further, the mouth is wrapped so as to cover the cap in order to ensure safety and hermeticity. A cap seal as a material is attached.

This cap seal has a tubular heat-shrinkable film 50 as shown in FIG. 7, and a knob 51 is formed at the lower end thereof.
A perforation 53 of the strip is engraved in the vertical direction. Then, at the time of opening, by pulling the knob 51 and pulling it upward, the cap seal 5 is cut along the perforation 53.
5 is divided.

[0004]

However, if the cap seal is picked up and pulled, the cap seal may be broken on the way and cannot be opened smoothly to the end. As a cause of this, it is considered that the cap seal 55 is usually made of the film 50 stretched in the lateral direction (circumferential direction), so that the cap seal 55 easily tears in the lateral direction from the perforation 53 as shown in FIG. The problem is that, particularly when the film is highly shrunk (40 to 50% or more), the film is hardened, and thus the film tends to be easily broken in the lateral direction.

[0005] In addition, these films 50 are usually provided with a printed layer for displaying characters and the like, and it is considered that the high shrinkage portion is caused by the thicker printed layer. That is, the printing layer is usually composed of a film-side design or a colored ink layer appropriately colored, and a white printing layer of white ink containing a pigment such as titanium oxide. It is considered that since the pigment such as titanium oxide is contained, the ink film becomes hard and the film is prevented from breaking in the vertical direction along the perforations 53. It is also conceivable that the organic solvent contained in the printing ink weakens the film.

Accordingly, the present invention has been made to solve such a problem, and a packaging material comprising a heat-shrinkable label or a cap seal attached to a container can be easily and reliably placed along a perforation. It is an object to be able to open it.

[0007]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a feature of the present invention as a package is that a tubular heat-shrinkable film 10 mounted on a container 2 is provided. And a printing layer 12 applied to the film 10 to form a packaging material 1. The packaging material 1 includes the film 10
Of the perforations 8a is engraved for opening in a direction crossing the shrinking direction, in the packaging body to be able to break the perforations 8a packaging material 1 attached to the container 2 along the full
Unprinted clear section 1 on both ends of film 10
8, the non-printing portion 17 is provided.
The non-printing portion 17 is centered on the overlapping portion 1a.
Has a predetermined width L1 and is provided on both sides of the overlapping portion 1a.
The perforations 8a are engraved so as to be located at both positions.
The interval L2 between the perforations 8a is equal to the width L1 of the non-printed portion 17.
It is set as follows .

The package is shrunk by heating the packaging material 1 and the printed layer 12 is thickened and hardened. However, since the perforations 8a are engraved in the non-printed portion 17, printing is performed. It is not affected by the layer 12. Therefore, the perforations 8a can be provided in portions where the original softness and elongation of the film can be maintained as much as possible, and opening can be performed easily and reliably. In addition, perforation means many fine holes or cuts formed so as to penetrate the packaging material. The shrinking direction is the circumferential direction of the tubular heat-shrinkable film having a large shrinkage.

A packaging material 1 is composed of a tubular heat-shrinkable film 10 mounted on a container 2 and a printed layer 12 applied to the film 10. The packaging material 1 includes Perforation 8 for opening in the direction crossing the shrinking direction
a is engraved so that the packaging material 1 mounted on the container 2 can be broken along the perforation 8a,
A thin layer portion 20 in which the thickness of the printing layer 12 is reduced is formed at a predetermined position of the packaging material 1, and the perforation 8 a is engraved on the thin layer portion 20.

[0010] Since the perforation 8a is formed in the thin layer portion 20 in which the thickness of the printed layer 12 is reduced, the package is more affected by the printed layer 12 than other portions. And the opening can be performed easily and reliably.

The heat-shrinkable packaging material is characterized by a tubular heat-shrinkable film 10 that can be attached to the container 2 and the film 1.
The film 10 has an opening perforation 8 in a direction crossing the shrinking direction.
In the heat-shrinkable packaging material a is engraved, the film
The clear portions 18 on both ends of the print 10 where no printing is performed are overlapped.
By bonding, a non-printing portion 17 is provided,
The non-printing portion 17 is predetermined around the overlapping portion 1a.
And has a width L1 on both sides of the overlapping portion 1a.
The perforations 8a are engraved so that both perforations
8a is equal to or less than the width L1 of the non-printed portion 17.
It is set . Then, the heat-shrinkable packaging material is fitted on a predetermined portion of the container 2 and is attached by heat shrinking. Can be performed easily and reliably.

Further, the film 10 includes a tubular heat-shrinkable film 10 that can be mounted on the container 2 and a printing layer 12 applied to the film 10. In the heat-shrinkable packaging material in which the perforations 8a are engraved, the thin layer portion 2 in which the thickness of the printing layer 12 is reduced
0 is formed at a predetermined position on the film 10 and the thin layer portion 20
In addition, the perforation 8a is engraved. In such a case, the thin layer portion 20 in which the thickness of the printing layer 12 is reduced.
The printing layer 12 is provided by providing the perforations 8a.
And the opening can be performed easily and reliably.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the package of the present invention will be described with reference to the drawings. 1 to 3 show a first embodiment of the present invention. As shown in FIG. 1, this embodiment exemplifies a container with a heat-shrinkable label.
Such a container has a tubular heat-shrinkable label 1 as a packaging material.
Are externally fitted to a glass bottle 2 for beer as a container.

As shown in FIG. 3 (a), the glass bottle 2 is formed with a body 3 having a substantially uniform diameter A on the lower side, and a mouth having a smaller diameter than the body 3 above the body 3. A part 4 is formed. The mouth portion 4 is formed in a tapered shape whose diameter gradually decreases toward the upper opening portion, and the diameter B of the smallest portion 4a is 37% of the diameter A of the body portion 3,
The diameter C of the heat-shrinkable label 1 is 103 to 110% of the diameter A of the body 3.

The opening opening above the mouth 4 is
It is closed by a closing body 5 such as a crown or a screw cap.

The heat-shrinkable label 1 has a thickness of 30 to 8
0 μm heat-shrinkable polyester film 10 such as polyethylene terephthalate or copolyester
And a printing layer 12 on which characters, designs, etc. are printed, so that the label body 15 is formed, and the printing layer 12 is on the inner side.
The two ends of the film 10 are overlapped, and the overlapping portion 1
a is bonded and formed into a cylindrical shape.

As shown in FIG. 2 (b), the printing layer 12 has a design of the film 10 and a colored ink layer 13 appropriately colored and a white printing layer made of a white ink containing a pigment such as titanium oxide. (White solid print layer) 14.

A heat-shrinkable label 1 formed in a cylindrical shape on the glass bottle 2 as shown by a two-dot broken line in FIG.
The glass bottle 2 is covered with the heat-shrinkable label 1 from the lower end 2a to the upper end 2b by heating and the outer peripheral edge of the upper surface of the closing body 5 is also covered with the heat-shrinkable label 1. . That is, the heat-shrinkable label 1 covers the entire periphery of the glass bottle 2 and also covers the periphery of the closing body 5.

At a predetermined position on the heat-shrinkable label 1, a non-printing portion 17 is provided. That is, the non-printed portions 17 are provided by forming the unprinted clear portions 18 on both ends of the film 10 respectively. The non-printed portion 17 has a predetermined width L1 centered on the overlapped portion 1a and has a shoulder portion of the glass bottle 2 from the upper end of the heat-shrinkable label 1 which is a direction intersecting the shrinking direction of the film 10. It is provided in a substantially band shape over the root portion of the mouth 4) (the hatched portion in FIG. 1). Note that the predetermined width L1 does not need to be parallel, and the width L may be gradually increased upward or downward.

In the lower part of the width L1 of the non-printing portion 17, a knob 7 (separation start portion) for opening a label formed by cutting is provided. A perforation 8 is formed from the knob 7 as a starting point. The perforation 8
Are two vertical perforations 8a carved from the knob 7 to the upper end of the film 10 to open the label 1 upward from the lower side, and a horizontal line formed around the knob 7 as a starting point. And a perforation 8b.

The vertical perforations 8a are located at the overlapping portions 1a.
And the distance L between both vertical perforations 8a
2 is set to be equal to or less than the width L1 of the non-printing portion 17. Specifically, the distance L3 between the edge 12a of the printing layer 12 and the vertical perforation 8a is preferably set to 0.5 to 3 mm, but as shown in FIG. 1
It is also possible to match 2a with the vertical perforations 8a. The perforations 8a are not limited to two, but may be provided in a plurality of more.

In the container with a heat-shrinkable label having the above structure, a tubular heat-shrinkable label 1 is fitted on a glass bottle 2, and the heat-shrinkable label 1 is heated by a steam heater (water vapor and steam condensed with water vapor). 80 ℃ ～ 90
It is manufactured by heating at a temperature of about 5 ° C. for 5 seconds to 15 seconds to cause high shrinkage in the circumferential direction.

When the label is attached, since the heat-shrinkable label 1 has high heat-shrinkability in the circumferential direction, the body 3
The opening 4 having a large diameter difference, particularly the minimum portion 4a, can be surely covered, and a uniform covering state can be obtained.

When the heat-shrinkable label 1 is heat-shrinked, the non-printed portion 17 becomes thicker due to the heat shrinkage than the other portion (the portion where the print layer 12 is provided).
2, the film can maintain its original softness and elongation. In particular, it is effective because there is no hard white print layer 14 having an ink film.

When the label 1 of the container manufactured as described above is opened, the tab 7 is pulled up to divide the label 1 of the mouth 4 into two right and left along the vertical perforation 8a. The label 1 is cut off and removed from the label 1 on the body 3 along the horizontal perforations 8b.

In the present embodiment, since the outer dimensions of the body 3 and the outer dimensions of the mouth 4 are greatly different, the amount of label shrinkage between the body 3 and the mouth 4 is greatly different. The heat-shrinkable label 1 is thicker at the mouth portion 4 than at the body portion 4 and is thicker toward the upper side because the mouth portion 4 is tapered. However, since the perforation 8a is formed in the non-printed portion 17, the non-printed portion 17 can maintain the original softness and elongation of the film as described above. Despite the high shrinkage, the occurrence of breaks in the film is small, and the film 10 can be easily and reliably opened to the upper end.

In addition, since the overlapping portion 1a of the label 1 is provided between the left and right vertical perforations 8a and the label 1 is doubled, the strength of the label 1 at the opened portion can be sufficiently secured.

As described above, by removing the label 1 from the mouth 4, the closure of the closing body 5 is released, and the mouth 4 can be opened.

FIG. 4A shows a second embodiment of the present invention. That is, in the first embodiment, the non-print portion 17
However, in the present embodiment, among the printing layers 12,
The coloring ink layer 13 is provided on the entire surface of the label 1, and the white printing layer 1 is provided.
By eliminating only 4, the thin layer portion 20 is formed. Moreover, the thin layer part 20 is not necessarily
It is not necessary to include a, and it is also possible to provide it in the middle of the film.

Also in this configuration, by eliminating the white print layer 14 which particularly affects the heat shrinkage of the label,
It is possible to reliably open the label 1 to the end.

FIG. 4B shows a third embodiment of the present invention. That is, by reducing the thickness of the coloring ink layer 13 and the white printing layer 14 constituting the printing ink layer 12,
The thin layer part 20 is constituted. Also in such a configuration, the influence of the white print layer 14 is less affected than other portions, and it is possible to reliably open the label 1 to the end.

FIG. 5B shows a reference example, which is shown in FIG.
As described above, the non-printed portion (or thin layer portion) 17 may be provided in a plurality of strips corresponding to each perforation 8a.

The present invention is effective for a packaging material having a perforation 8a in a high shrinkage portion having a shrinkage ratio of 50% or more as in the above embodiment, but is not limited thereto. As shown in FIG. 7, a cap seal body 25 composed of a tubular heat-shrinkable film 10 attached to the mouth of the container 2 as a packaging material and a printed layer (not shown) applied to the film 10 is provided with a perforation. The cap seal 22 formed by engraving 26 may be used. Such a cap seal 22
In this case, the perforation 26 is formed over the entire length of the cap seal body 25 in the vertical direction.

The tab 7 is provided at the upper end of each of the heat-shrinkable label covering the entire length of the container 2 and the cap seal for sealing only the mouth of the container 2. It may be configured to break from above to below.

The container 2 may be a plastic bottle other than the above-mentioned glass bottle, a metal container, or the like, and the outer shape of the container may be rectangular in cross section.

[0036]

As described above, the package according to the present invention can be applied to a non-printed portion or a thin layer portion provided at a predetermined position of a packaging material.
Since the perforations are formed, even if the film is particularly highly shrunk, there is an effect that the packaging material can be easily and reliably opened along the perforations. And la
The overlapping part of the bell is provided between the left and right vertical perforations.
The label is doubled,
Strength can be sufficiently secured.

Further, when the perforations are formed in the thin layer portion of the packaging material, the printed layer can be continuously applied to the packaging material, and the function as a label is not impaired.

Further, since the heat-shrinkable packaging material of the present invention has perforations in the non-printed portion or the thin layer portion, even if a predetermined portion of the container is covered by high heat shrinkage, it can be opened. It can be performed easily and reliably.

[Brief description of the drawings]

FIG. 1 is an overall front view of a package including a partial cross section showing a first embodiment of the present invention.

FIG. 2A is a cross-sectional plan view of a mouth portion of the package, and FIG.
2 is a cross-sectional plan view showing a main part of a mouth of the package.

FIG. 3A is a front view of a state in which a packaging material is fitted to a container, and FIG. 3B is a perspective view of a main part including a partial cross section in a state where the packaging material is opened.

FIG. 4A is a cross-sectional plan view showing a main part of a second embodiment of the present invention, and FIG. 4B is a cross-sectional plan view showing a main part of a third embodiment of the present invention.

FIG. 5A is a cross-sectional plan view illustrating a main part of a modification of the first embodiment of the present invention, and FIG. 5B is a cross-sectional plan view illustrating a main part of a reference example .

FIG. 6 is an overall perspective view of a cap seal.

FIG. 7 is a perspective view showing a conventional example.

[Explanation of symbols]

1: heat-shrinkable label (packaging material), 1a: overlapping part,
2 ... container, 8a ... perforation, 10 ... heat-shrinkable film edge, 12 ... printed layer, 15 ... packaging material main body, 17 ... non-printed part, 20 ... thin layer part, 22 ... cap seal (packaging material),
25: cap seal body, 26: perforation, L1 no mark
Printing part width, L2 ... Perforation spacing

────────────────────────────────────────────────── ─── Continuing from the front page Examiner Yukio Maeda (56) References JP-A-7-234637 (JP, A) JP-A-9-216647 (JP, A) JP-A 62-136322 (JP, U) JP 46-30629 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) B65D 41/62 B65D 71/08

Claims (4)

(57) [Claims] A packaging material (1) is composed of a tubular heat-shrinkable film (10) mounted on a container (2) and a printing layer (12) applied to the film (10). A perforation (8a) for opening is engraved on the packaging material (1) in a direction intersecting the shrinking direction of the film (10), and the packaging material (1) is attached to the container (2) along the perforation (8a). and in the packaging material (1) to be able to break the package, the full
Unprinted clear on both ends of film (10)
The non-printed portion (1) is
7), and the non-printed portion (17) is overlapped
A predetermined width (L1) centering on the portion (1a);
The above-mentioned machine is positioned on both sides of the overlapping portion (1a).
A perforation (8a) is engraved between both perforations (8a)
The distance (L2) is equal to or less than the width (L1) of the non-printing portion (17).
A package characterized by being set below . 2. A packaging material (1) is composed of a tubular heat-shrinkable film (10) mounted on a container (2) and a printing layer (12) applied to the film (10). A perforation (8a) for opening is engraved on the packaging material (1) in a direction intersecting the shrinking direction of the film (10), and the packaging material (1) is attached to the container (2) along the perforation (8a). In a package body capable of breaking the packaging material (1), a thin layer portion (20) having a reduced thickness of the printing layer (12) is formed at a predetermined position of the packaging material (1), The thin layer (2
0), wherein the perforation (8a) is engraved. 3. A heat-shrinkable tubular film (10) mountable on a container (2) and a printing layer (12) applied to the film (10), wherein the film (10) includes: In the heat-shrinkable packaging material in which a perforation (8a) for opening is engraved in a direction intersecting with the shrinking direction, the film (1)
Clear section (18) where both ends of 0) are not printed
By superimposing, a non-printing portion (17) is provided.
The unprinted portion (17) is overlapped with the overlapping portion (1a).
Has a predetermined width (L1) centered on
The perforations (8) are located on both sides of the portion (1a).
a) is engraved and the distance (L) between both perforations (8a)
2) is set below the width (L1) of the non-printing portion (17).
A heat-shrinkable packaging material characterized in that it is specified . 4. A tubular heat-shrinkable film (10) attachable to a container (2) and a printing layer (12) applied to the film (10), wherein the film (10) includes: In the heat-shrinkable packaging material in which a perforation (8a) for opening is engraved in a direction intersecting with the shrinking direction, the printing layer (12)
A thin layer portion (20) having a reduced layer thickness is formed at a predetermined position of the film (10), and the perforation (8a) is formed in the thin layer portion (20). Heat shrinkable packaging material.