JP2016068970A - Sealing label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealing label which can be easily and reliably opened by one action.SOLUTION: A sealing label is equipped with: a cylindrical label body 10 of which upper and lower ends are opened and which has a heat shrinkability mainly in a circumferential direction; a lateral perforation line 21 which extends in a circumferential direction at a predetermined height in the label body 10; a pair of longitudinal perforation lines 22, 22 which extend from the upper end of the label body 10 to a lower side and do not reach the lateral perforation line 21; a pair of auxiliary break longitudinal perforation lines 31, 31 as an auxiliary break line which extends from a middle position in a longitudinal direction of the label body 10 to the lateral perforation line 21 between the pair of longitudinal perforation lines 22, 22 in the circumferential direction of the label body 10; break prevention longitudinal perforation lines 32, 32 as a break prevention line which extends from a middle position in a longitudinal direction of the label body 10 to the lateral perforation line 21 on an outer side of the pair of longitudinal perforation lines 22, 22 in the circumferential direction of the label body 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sealing label for sealing a container, and particularly to a sealing label excellent in opening workability.

  An example of this type of sealing label is shown in FIG. As shown in the figure, the sealing label 50 includes a cylindrical label main body 51 formed of a heat-shrinkable film, a horizontal perforation line 52 extending in the circumferential direction of the label main body 51, and an upper end portion of the label main body 51. A pair of vertical perforation lines 53, 53 extending downward from the horizontal perforation line 52, and the upper end of the sealing label 50 when the package with the sealing label 50 attached thereto is opened. In theory, a portion between the pair of vertical perforation lines 53, 53 is theoretically cut out in a vertical direction by pulling between the pair of vertical perforation lines 53, 53 and then pulling them down in the circumferential direction. The upper region of the sealing label 50 is removed in one action by being broken in the circumferential direction along the horizontal perforation line 52.

Japanese Utility Model Publication No. 54-106956

  However, depending on the user, the space between the pair of vertical perforations 53, 53 at the upper end of the sealing label 50 may be pulled down obliquely downward from the beginning, and as a result, the breaks along the vertical perforations 53, 53. After that, a region without a perforation line, that is, between the lower end of the vertical perforation lines 53 and 53 and the horizontal perforation line 52, is broken in the circumferential direction, and the upper portion of the sealing label 50 is cleaned along the horizontal perforation line 52. Sometimes it cannot be excised.

  Therefore, in such a case, it is necessary to again perform a troublesome operation of carefully cutting the remaining portion above the horizontal perforation line 52 along the horizontal perforation line 52, and there is a problem that it takes time to open the bag. is there.

  Then, the subject of this invention is providing the sealing label which can be opened simply and reliably by one action.

  In order to solve the above-mentioned problems, the invention according to claim 1 includes a cylindrical label body having heat shrinkability with open upper and lower ends, and a lateral direction extending in the circumferential direction at a predetermined height position in the label body. An auxiliary line disposed between a perforation line, a pair of vertical perforation lines extending downward from the upper end of the label body and not reaching the horizontal perforation line, and the pair of vertical perforation lines in the circumferential direction of the label body A sealing line, wherein the auxiliary breaking line extends from a middle position in the longitudinal direction of the label main body to the horizontal perforation line or the vicinity thereof. Here, “between the pair of vertical perforations” does not mean only a pair of vertical perforations and a substantially rectangular region formed by connecting the upper ends and lower ends thereof, but both the pair of perforations. It also includes a substantially rectangular region connecting the lower end and the intersection of the virtual extension line of the vertical perforation line and the horizontal perforation line. The “intermediate position” means an intermediate position in an area surrounded by the upper end of the vertical perforation line and the horizontal perforation line.

  According to a second aspect of the present invention, in the sealed label according to the first aspect of the invention, the label main body has a circumferential tear strength smaller than a longitudinal tear strength.

  The invention according to claim 3 is the sealed label according to claim 2, wherein the label main body has a circumferential tear strength measured in accordance with JIS K 7128-1991 Method A (trouser method) of 5N. / Mm or less.

  According to a fourth aspect of the present invention, there is provided a sealed label according to the second aspect of the invention, wherein the label main body has a longitudinal tear strength of 20 N measured according to method A (trouser method) of JIS K 7128-1991. / Mm or more.

  The invention according to claim 5 is the sealing label according to claim 1, 2, 3 or 4, wherein the auxiliary breaking means has an upper end located above a lower end of the vertical perforation line. It is characterized by.

  Further, the invention according to claim 6 is the sealing label according to claim 1, 2, 3, 4 or 5, wherein the label main body is disposed outside the pair of vertical perforations in the circumferential direction of the label main body. A breakage prevention line extending downward from a midway position in the vertical direction is formed.

  The invention according to claim 7 is the sealing label of the invention according to claim 1, 2, 3, 4, 5 or 6, and a portion corresponding to between the pair of vertical perforations in the circumferential direction of the label main body. Is characterized in that one or a plurality of cuts connected to the horizontal perforation line are formed.

  The invention according to claim 8 is characterized in that, in the sealed label according to claim 6 or 7, the break prevention line is separated from the horizontal perforation line.

  The invention according to claim 9 is the sealing label of the invention according to claim 1, 2, 3, 4, 5, 6, 7 or 8, wherein the label body is provided with an indication indicating an opening operation. It is characterized by being.

  As described above, the sealing label of the invention according to claim 1 includes the auxiliary break line disposed between the pair of vertical perforations in the circumferential direction of the label main body, and the auxiliary break line is the vertical direction of the label main body. Since it extends from the middle position to the horizontal perforation line or the vicinity thereof, after breaking along a pair of vertical perforation lines, it started to break in the circumferential direction between the lower end of one vertical perforation line and the horizontal perforation line Even after that, the fracture path is connected to the auxiliary perforation line, and after that, after breaking along the auxiliary perforation line to or near the horizontal perforation line, the fracture path is connected to the horizontal perforation line, and along the horizontal perforation line. It will break. Therefore, in one action, the upper part of the sealing label is surely cut along the horizontal perforation line.

  In particular, as in the case of the sealed label of the invention according to claim 2, it is effective when the tearing strength in the circumferential direction is smaller than the tearing strength in the longitudinal direction, that is, when the label main body is easily broken in the circumferential direction. Like the sealed label according to the invention, the label body preferably has a tearing strength in the circumferential direction measured according to JIS K 7128-1991 Method A (trouser method) of 2.5 N / mm or less. Like the sealed label of the invention according to Item 4, the label body preferably has a tear strength in the longitudinal direction measured in accordance with A method (trouser method) of JIS K 7128-1991 of 39 N / mm or more.

  Further, as in the case of the sealed label of the invention according to claim 5, the auxiliary breaking line is broken along a pair of vertical perforations when the upper end is located above the lower end of the vertical perforation. After that, the break path that started to break in the circumferential direction from the lower end of one vertical perforation line is securely connected to the auxiliary break line, so the horizontal perforation line is surely broken from one vertical perforation line via the auxiliary break line. can do.

  Moreover, since the sealing label of the invention according to claim 6 is formed with a break prevention line extending downward from a midway position in the longitudinal direction of the label body on the outside of the pair of vertical perforations in the circumferential direction of the label body. After breaking along a pair of vertical perforations, the break propagates from the lower end of one vertical perforation to the auxiliary break line, whereas the break begins to propagate in the circumferential direction from the lower end of the other vertical perforation When the break path reaches the break prevention line, breakage in the circumferential direction from the lower end of the other vertical perforation line is prevented, and only one of the breaks can be propagated to the horizontal perforation line and reliably broken. Therefore, since the upper part of the sealing label is cut out integrally without being divided into a plurality of parts, there is no troublesomeness.

  Further, as in the sealed label of the invention according to claim 7, one or a plurality of cuts connected to the horizontal perforation line are formed in a portion corresponding to between the pair of vertical perforation lines in the circumferential direction of the label main body. In this case, even when a user unfamiliar with the present invention pulls down directly between the pair of vertical perforations without changing the direction in the circumferential direction, the horizontal perforation exceeds the height position. Therefore, only the upper part of the sealing label can be cut cleanly without breaking down.

  Further, in the sealing label of the invention according to claim 8, since the break prevention line is separated from the horizontal perforation line, there is no fear that the break of the horizontal perforation line is stopped by the break prevention line, and the horizontal perforation line is surely secured. Can break.

  In the sealed label according to the ninth aspect of the invention, since the label main body is provided with a display indicating the opening operation, the user can recognize that the opening can be performed with one action.

It is a perspective view which shows one Embodiment of the sealing label which concerns on this invention. (A) is a front view which shows the state which folded the sealing label same as the above, (b) is a rear view which shows the state which folded the sealing label same as the above. It is a figure which shows the positional relationship of the horizontal perforation line in the sealing label same as the above, the vertical perforation line, the vertical perforation line for auxiliary | assistant fracture | rupture, and the vertical perforation line for fracture prevention. It is a partial enlarged front view which shows the state which folded the sealing label same as the above. It is a reference drawing which shows the manufacturing method of the sealing label same as the above. (A) is a top view which shows the label mounting body with which the sealing label same as the above was mounted | worn, (b) is a front view which shows a label mounting body same as the above. (A), (b) is a front view which shows the fracture | rupture state at the time of opening a label mounting body same as the above. It is a figure which shows the modification of a vertical perforation line. It is a perspective view which shows the conventional sealing label.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 shows an embodiment of the sealing label of the present invention. As shown in the figure, this sealing label 1 is attached to the entire lidded container in order to seal the lid of the lidded container such as eye drops. A cylindrical label body 10 having heat shrinkability in the direction, a horizontal perforation line 21 extending in the circumferential direction at a predetermined height position in the label body 10, and a horizontal perforation line extending downward from the upper end of the label body 10 Between the pair of vertical perforation lines 22, 22 that do not reach 21 and the pair of vertical perforation lines 22, 22 in the circumferential direction of the label main body 10, extending from a midway position in the vertical direction of the label main body 10 to the horizontal perforation line 21. The intermediate position of the label main body 10 in the vertical direction outside the pair of auxiliary perforation vertical perforations 31 and 31 as the auxiliary break lines and the pair of vertical perforations 22 and 22 in the circumferential direction of the label main body 10. It extends to Luo transverse perforation lines 21, and a longitudinal perforation line 32, 32 for preventing breakage of the rupture prevention line. In addition, in order to adhere the lower region of the sealing label 1 to a container or the like, an adhesive layer made of a heat-sensitive adhesive or the like is partially formed on the inner surface of the label main body 10, or the slipping property of the sealing label 1 with respect to the container or the like is improved. For this purpose, a sliding layer or the like may be formed on the inner surface of the label main body 10.

  The label main body 10 is formed in a cylindrical shape by overlapping both end portions of the heat-shrinkable film and bonding the overlapped portion using a solvent or an adhesive. The heat shrinkable film may be polystyrene, polyolefin, polystyrene, vinyl chloride or the like.

Moreover, the said laminated | multilayer film should just have heat-shrink property as a whole, for example, may contain the film which does not have heat-shrink property. The heat-shrinkable film can be obtained by at least uniaxial stretching after film formation and heat aging at a required temperature.
The heat-shrinkable film can be thermally shrunk in at least one direction (main heat-shrinking direction) at a required temperature (for example, 80 ° C. to 100 ° C.), and heat is applied so that one direction of the heat-shrinkable film is a circumferential direction. By forming the shrinkable film into a cylindrical shape, the label body 10 having heat shrinkability mainly in the circumferential direction is configured.
Although the thickness of the said heat-shrinkable film is not specifically limited, For example, it is 20-120 micrometers, Preferably, it is 30-80 micrometers.

  The heat-shrinkable film has a tear strength measured in accordance with A method (trouser method) of JIS K 7128-1991 (plastic and sheet tear test method) in the longitudinal direction of 20 N / mm or more, preferably 30 N / mm or more, more preferably 35 N / mm or more, particularly preferably 35 N / mm to 200 N / mm, and 5 N / mm or less in the circumferential direction, preferably 3 N / mm or less, more preferably 2.5 N / mm. Hereinafter, it is particularly preferably 2.5 N / mm to 1 N / mm. If the tear strength in the vertical direction is less than 20 N / mm, it becomes easy to tear in the vertical direction, so that the break path after the lower ends of the pair of vertical perforation lines 22 and 22 is not connected to the vertical perforation line 31 for auxiliary breakage. This is because it extends to the horizontal perforation 21 and cannot be opened in one action. Further, if the tear strength in the vertical direction exceeds 200 N / mm, it becomes difficult to tear in the vertical direction. Therefore, in order to improve the breakability in the vertical direction, the through holes constituting the pair of vertical perforations 22 and 22 are provided. This is because of design constraints such as having to be increased. Specifically, the longitudinal length of the through hole: the length of the non-penetrating portion in the longitudinal direction is usually 0.7: 0.7 or 0.5: 0.8. 5: Must be changed to 0.5. Moreover, it is because the fracture | rupture path | route after the lower end of a pair of vertical perforation line 22 and 22 will become difficult to be connected to the vertical perforation line 31 for auxiliary | assistant fracture | rupture if the tear strength of the circumferential direction exceeds 5 N / mm. Since the design print layer or the like hardly affects the tear strength, the tear strength in the longitudinal direction of the heat-shrinkable film is substantially equal to the tear strength in the longitudinal direction of the label main body 10. The material of the heat-shrinkable film satisfying such tear strength is not particularly limited as long as it includes a polyester film, and is a single layer film of a polyester film or a laminated film including a polyester film. There may be.

Examples of the polyester film include aromatic polyester films and aliphatic polyester films.
Examples of the aromatic polyester film include a polyethylene terephthalate film containing terephthalic acid as a main component as a dicarboxylic acid component and ethylene glycol as a main component as a diol component. A polylactic acid is mainly used as an aliphatic polyester film. Examples include polylactic acid film as a component.

The laminated film is a laminated film obtained by laminating two or more layers of a polyester film, or a laminated film obtained by laminating one layer or two layers or more of a polyester film and one layer or two or more layers of other layers, The laminated film has a three-layer structure of polyester film / other layers / polyester film.
The other layers are not particularly limited. For example, polystyrene resins such as polystyrene and styrene-butadiene copolymers, polyolefin resins such as polypropylene and cyclic polyolefin, thermoplastic resins such as polycarbonate and polyvinyl chloride resins, and the like. A resin film containing one kind selected from the above or a mixture of two or more kinds; a metal vapor-deposited layer; and a heat insulating layer such as a nonwoven fabric.

  The heat-shrinkable film may be provided with a design printing layer as necessary. The design print layer can be provided on the front surface or the back surface of the heat-shrinkable film. The heat-shrinkable film may be, for example, a non-transparent film such as milky white or a film having excellent transparency. However, when the design print layer is provided on the back side, the film has excellent transparency. Is used.

  The horizontal perforation line 21 is arranged at an intermediate position in the vertical direction of the label body 10 and is formed over the entire circumference of the label body 10. Two or more horizontal perforation lines 21 extending in the circumferential direction of the label main body 10 may be formed at predetermined intervals in the vertical direction. One horizontal perforation line 21 is meant to include the case where only one perforation line is formed, as well as the case where two perforation lines are formed adjacent to each other. “Two adjacently formed” means that two perforation lines are formed in parallel with an interval of 1 mm or less.

  The sealing label 1 used for sealing the container with a lid is attached to the container so that the horizontal perforation line 21 coincides with the boundary portion between the trunk portion and the lid portion or in the vicinity thereof. For this reason, the formation position of the horizontal perforation line 21 is appropriately designed according to the type of container. The sealing label 1 is divided into an upper region and a lower region with the horizontal perforation line 21 as a boundary, and among these, the upper region is excised when opened.

  Here, in the present specification, the “perforation line” means a plurality of directional holes in which a plurality of through holes penetrating from the front surface of the film to the back surface thereof are formed at predetermined intervals like a sewing mark of a sewing needle. A collection of through holes. The perforation line has a non-penetrating part (a film part not subjected to a penetrating treatment) between the through holes arranged with directivity. Examples of the front view shape of one through hole include an elongated linear shape, a needle hole shape (a punched substantially circular shape or a substantially elliptical shape), and the like. Since the film is easily cut along the perforation line, the shape of the through hole of the perforation line is preferably an elongated straight line. In the present specification, the “cut” means a cut provided in the film, and as a difference from the perforation, the cut function may be achieved by itself. The length of the cut is, for example, 3 mm to 10 mm, preferably 5 mm to 8 mm.

  The length in the circumferential direction of one through hole of the horizontal perforation line 21 is not particularly limited, but is, for example, 0.3 mm to 3 mm, and preferably 0.5 mm to 2 mm. Moreover, the length in the circumferential direction of one non-penetrating portion of the horizontal perforation line 21 is not particularly limited, but is, for example, 0.3 mm to 3 mm, and preferably 0.3 mm to 1 mm.

  The pair of vertical perforation lines 22, 22 extend linearly from the upper end of the label main body 10 toward the obliquely lower side so that the distance between the two is gradually narrowed, but does not reach the horizontal perforation line 21. The required perforation line is not formed between the lower end of the vertical perforation line 22 (the lower end of the lowermost through hole among the plurality of through holes of the vertical perforation line 22) and the horizontal perforation line 21. An area exists. The length L1 between the lower end of each vertical perforation line 22 and the horizontal perforation line 21 is, for example, 2.5 mm to 20 mm, preferably 3 mm to 10 mm, and more preferably 4 mm to 6 mm. . In this embodiment, L1 = 3 mm. If the length L1 is too small, the length of the non-penetrating portion of the vertical perforation line 22 is hardly different, and the vertical perforation line 22 is substantially connected to the horizontal perforation line 21, while the length L1 therebetween is too large. The length of the vertical perforation line 22 becomes relatively short, and it becomes difficult for the user to grasp the vertical perforation line and open it. The pair of vertical perforations 22 and 22 extend linearly from the upper end of the label main body 10 toward the obliquely lower side so that the distance between the two is gradually narrowed, but is not limited thereto. The pair of vertical perforations may be formed in parallel or may be curved.

  The distance between the pair of vertical perforations 22 and 22 is less than half the circumference of the label body 10, and preferably 0.1 to 0.3 times the circumference of the label body 10. Specifically, the distance between the pair of vertical perforations 22 and 22 is, for example, 3 mm to 20 mm, although it depends on the circumferential length of the label main body 10. In this embodiment, the peripheral length of the label main body 10 is 67 mm, the distance L2 between the upper ends of the pair of vertical perforations 22 and 22 is 18 mm, and the distance L3 between the lower ends is 14 mm. The length of one through hole constituting the vertical perforation line 22 is not particularly limited, but is, for example, 0.3 mm to 3 mm, and preferably 0.5 mm to 2 mm. The length in the vertical direction of one non-penetrating portion of the vertical perforation line 22 is not particularly limited, but is, for example, 0.3 mm to 2 mm, and preferably 0.5 mm to 1.5 mm.

  A substantially trapezoidal knob 11 is extended between a pair of vertical perforations 22, 22 at the upper end of the label body 10. In this sealed label 1, The uppermost through hole constituting the vertical perforation line 22 is disposed so as to intersect with the upper end of the label main body 10. Therefore, a notch due to the through hole is formed at the upper end of the label main body 10 corresponding to the base end portions on both side edges of the knob portion 11.

  The pair of auxiliary perforating vertical perforation lines 31 and 31 are arranged in parallel with a predetermined interval therebetween, so that the upper end portions thereof and the lower end portions of the vertical perforation line 22 overlap in the vertical direction. The horizontal perforation line 21 extends from an intermediate position in the vertical direction in the upper region of the label body 10. The height position of the upper end of the auxiliary perforation vertical perforation line 31 is not particularly limited, but the upper end of the auxiliary perforation vertical perforation line 31 is preferably located above the lower end of the vertical perforation line 22. Further, the distance between the auxiliary perforation vertical perforation line 31 and the lower end of the vertical perforation line 22 is not particularly limited, but is preferably set between 2 mm and 4 mm. In this sealing label 1, the length L4 of each auxiliary breaking vertical perforation line 31 is 5 mm, the distance L5 between the pair of auxiliary breaking vertical perforation lines 31, 31 is 8 mm, and is adjacent to each auxiliary breaking vertical perforation line 31. The distance L6 from the lower end of the matching vertical perforation line 22 is set to 3 mm, and the vertical overlap length between the upper end portion of the auxiliary perforation vertical perforation line 31 and the lower end portion of the vertical perforation line 22 is set to 2 mm.

  The length in the vertical direction of one through hole constituting the auxiliary perforation vertical perforation line 31 is not particularly limited, but is, for example, 0.3 mm to 3 mm, and preferably 0.5 mm to 2 mm. . The length in the vertical direction of one non-penetrating portion of the auxiliary perforation vertical perforation line 31 is not particularly limited, but is, for example, 0.3 mm to 2 mm, and preferably 0.5 mm to 1.5 mm.

  Similar to the auxiliary perforation vertical perforation line 31, the break prevention vertical perforation line 32 is arranged in the vertical region in the upper region of the label main body 10 so that the respective upper end portions and the lower end portion of the vertical perforation line 22 overlap in the vertical direction. It extends from the intermediate position in the direction to the horizontal perforation line 21. Further, in this embodiment, the length is parallel to the auxiliary perforation vertical perforation line 31 and is the same length, but is not limited to this, and may not be parallel or the same length. Good. The height position of the upper end of the vertical perforation line 32 for preventing breakage is not particularly limited, but the upper end of the vertical perforation line 32 for preventing breakage is preferably positioned above the lower end of the vertical perforation line 22. Further, the distance between the vertical perforation line 32 for preventing breakage and the lower end of the vertical perforation line 22 is not particularly limited, but is preferably set to 2 mm to 4 mm. In this sealing label 1, the length L7 of each break prevention vertical perforation line 32 is 5 mm, the distance L8 between the breakage prevention vertical perforation line 32 and the adjacent auxiliary breakage vertical perforation line 31 is 6 mm, and each break prevention The distance L9 between the vertical perforation line 32 and the lower end of the adjacent vertical perforation line 22 is 3 mm, and the overlap length in the vertical direction between the upper end of the vertical perforation line 32 for fracture prevention and the lower end of the vertical perforation line 22 is 2 mm. Is set.

  In addition, as shown in FIG. 3, the label main body 10 is printed with an arrow indicating an opening operation in a region between the pair of vertical perforation lines 22, 22. By pulling in the circumferential direction as it is, the opener is informed that it can be opened in one action.

  The sealing label 1 mentioned above can be manufactured as follows, for example. By a conventionally known method, a long belt-like label base material that is folded into a sheet shape, in which the label main bodies 10 are continuously connected, is prepared. This long strip-shaped label base material can be obtained, for example, by bonding both end portions of a long heat-shrinkable film in a cylindrical shape and then folding it into a sheet. In FIG. 5, the horizontal perforation line 21, the vertical perforation line 22, the auxiliary perforation vertical perforation line 31, and the break prevention prevention so as to penetrate from the one side of the long strip-shaped label base material LM in the thickness direction of the entire flat body. The individual perforated label bodies 10 are obtained by forming the vertical perforation lines 32 and cutting the label base material LM in the width direction along a planned cutting line cl indicated by a one-dot chain line. In addition, the formation means of a perforation line is not specifically limited, A needle | hook, a blade, a laser beam etc. are mentioned.

FIGS. 6A and 6B show a labeled container LV in which the sealing label 1 is attached to the lidded container CV. As a container CV with a lid, it has a trunk part B and a lid part C attached to the upper end of the trunk part B so as to be openable and closable, and medicines such as eye drops, beverages such as nutritional drinks, cosmetics, seasonings, foods, etc. Can be used.
First, after the sealing label 1 is externally fitted to the lidded container CV so that the horizontal perforation line 21 is positioned near the lower end of the lid C, the entire sealing label 1 is heated to a predetermined temperature (for example, 80 ° C. to 100 ° C. ), The sealing label 1 contracts in the circumferential direction and adheres to the outer surface of the lidded container CV. In addition, when the sealing label 1 is externally fitted with the upper region protruding above the top surface of the lidded container CV, as shown in FIG. A part of the region (a part of the upper region includes the knob portion 11) is bent so as to wrap around the periphery of the top surface of the lid C, and the peripheral edge of the top surface of the lid C Close contact with.

  When opening the labeled container LV obtained in this way, a right-handed person holds the body of the labeled container LV with his left hand, picks the knob 11 with his right hand, and, for example, pulls it down diagonally to the lower right. As shown in FIG. 7A, the label body 10 is cut in a strip shape along a pair of vertical perforations 22 and 22, and one vertical perforation 22 (in this case, the right vertical perforation) 22) is first broken to the lower end.

  Thereafter, the fracture occurs in the circumferential direction with a small tear strength from the lower end of one broken vertical perforation 22 (right vertical perforation 22), and the fracture path reaches the auxiliary fracture vertical perforation line 31 on the left side. . Then, it breaks further downward along the auxiliary breaking vertical perforation line 31, and the breaking path reaches the horizontal perforation 21.

  At this time, the other vertical perforation 22 (the left vertical perforation 22) is also broken to the lower end thereof, and then is broken in the circumferential direction with a small tear strength, and the fracture path is the left adjacent break prevention vertical. Although it reaches the perforation line 32, the breakage path on the left side is bent more rapidly than the breakage path on the right side. Therefore, the breakage line does not break down along the vertical perforation line 32 for preventing breakage. When the prevention vertical perforation line 32 is reached, the circumferential break is stopped.

  Therefore, when the cut strip-like portion is drawn around in the circumferential direction as it is, as shown in FIG. 5B, the right side breaking path is broken along the horizontal perforation 21 and finally cut off. The upper region of the sealing label 1 is cut out without cutting the strip-shaped portion.

  As described above, the sealing label 1 has an auxiliary breaking vertical line extending from a middle position in the vertical direction of the label main body 10 to the horizontal perforation line 21 between the pair of vertical perforation lines 22 and 22 in the circumferential direction of the label main body 10. Since the perforation line 31 is formed, even in the label main body 10 that is easily torn in the circumferential direction, the breaking path that breaks along the one vertical perforation line 22 passes through the auxiliary perforation vertical perforation line 31. Since the perforation 21 is reliably reached, the upper part of the sealing label can be surely cut out along the horizontal perforation line 22 with one action.

  Further, the sealing label 1 has a break prevention vertical perforation line 32 extending downward from a middle position in the longitudinal direction of the label main body 10 outside the pair of vertical perforation lines 22 and 22 in the circumferential direction of the label main body 10. Therefore, even if the label main body 10 is easily torn in the circumferential direction, it breaks along the pair of vertical perforation lines 22, 22 and then begins to break in the circumferential direction from the lower end of the other vertical perforation line 22. When the path reaches the vertical perforation line 32 for preventing breakage, breakage in the circumferential direction from the lower end of the other vertical perforation line 22 is prevented, and only the horizontal perforation line 21 can be reliably broken. Therefore, the upper region of the sealing label is cut out integrally without being divided into a plurality of parts, so there is no trouble.

  In the above-described embodiment, the upper end portion of the auxiliary perforation vertical perforation line 31 and the lower end portion of the vertical perforation line 22 overlap in the vertical direction, but the present invention is not limited to this. Can have a certain degree of breakability in the vertical direction, the upper end of the auxiliary perforation vertical perforation line 31 and the lower end of the vertical perforation perforation line 22 may be the same height. The upper end and the lower end of the vertical perforation line 22 may be slightly separated in the height direction.

  In the embodiment described above, the pair of auxiliary perforation vertical perforation lines 31, 31 are arranged between the pair of vertical perforation lines 22, 22. The auxiliary perforation vertical perforation line may be disposed at a central position between the pair of vertical perforation lines 22, 22, and three or more auxiliary fracture vertical perforation lines may be disposed between the pair of vertical perforation lines 22, 22. You may arrange.

  In the above-described embodiment, the perforation line is adopted as the auxiliary break line, but the invention is not limited to this, and one or a plurality of cut lines and half cut lines can also be adopted.

  Further, in the above-described embodiment, the vertical perforation line 32 for preventing breakage is not limited to this, so that the upper end portion thereof and the lower end portion of the vertical perforation line 22 overlap in the vertical direction. If 10 has a certain degree of breakability in the vertical direction, the upper end of the vertical perforation line 32 for preventing breakage and the lower end of the vertical perforation line 22 may be the same height, and the vertical perforation line 32 for preventing breakage. And the lower end of the vertical perforation line 22 may be slightly separated in the height direction.

  In the above-described embodiment, a perforation line is employed as the break prevention line, but the present invention is not limited to this, and a half-cut line can also be employed.

  Further, in the above-described embodiment, the vertical perforation line 32 for preventing breakage extends from the intermediate position in the vertical direction in the upper region of the label body 10 to the horizontal perforation line 21. And the horizontal perforation line 21 are connected, when breaking along the horizontal perforation line 21, the breakage of the horizontal perforation line 21 may stop at the connecting portion of the vertical perforation line 32 for fracture prevention. A slight gap (for example, about 2 mm) may be formed between the lower end of the vertical perforation line 32 for preventing breakage and the horizontal perforation line 21.

  In the above-described embodiment, the horizontal perforation line 21 is formed over the entire circumference of the label main body 10, but when opening the labeled container 10, the direction of the picked knob portion 11 is changed in the middle. If it is pulled down directly, there is a risk of breaking beyond the horizontal perforation line 21. For example, instead of forming the horizontal perforation line 21 over the entire circumference of the label body 10, a pair of vertical perforation lines About the part corresponding between 22 and 22, you may make it form one or several cut | notch.

  Further, in the above-described embodiment, the corresponding left and right through holes in the pair of vertical perforations 22 and 22 are arranged in parallel to each other. However, the present invention is not limited to this, for example, as shown in FIG. As described above, by arranging the corresponding left and right through holes in the pair of vertical perforation lines 22 and 22 to have a C-shape, the breaking force applied to the vertical perforation lines 22 and 22 escapes outward. It may be. Even if the knob 11 is picked and the rupture is started, it is effective when the rupture tends to go inward from the vertical perforations 22 and 22.

  In the above-described embodiment, the break prevention vertical perforation lines 32 and 32 are formed outside the pair of vertical perforation lines 22 and 22, but the break prevention lines are not always necessary. It is only necessary that at least one auxiliary breaking line is formed between the pair of vertical perforations 22 and 22 in the circumferential direction of the main body 10.

   Hereinafter, the present invention will be described in detail with reference to examples. However, the present invention is not limited to the following examples.

[Example]
A 50 μm thick polyethylene terephthalate film (trade name “LX18S” manufactured by Mitsubishi Plastics, Inc.) having heat shrinkability in one direction was used as the heat shrinkable film. By forming this heat-shrinkable film into a cylindrical shape with the heat-shrink direction being the circumferential direction, a cylindrical film having a circumferential length of about 70 mm and an axial length of 55 mm was formed. The tear strength in the longitudinal direction and circumferential direction of this tubular film (polyethylene terephthalate film) was measured in accordance with method A (trouser method) of JIS K 7128-1991. The results are shown in Table 1.
By forming the vertical sewing line 22, the horizontal sewing line 21, the auxiliary breaking line 31 and the breaking preventing line 32 as shown in FIGS. 1 to 4 on this tubular film, the sealing label of the example was produced.
Note that the lengths of the through holes of the vertical sewing line 22, the horizontal sewing line 21, the auxiliary breaking line 31, and the breakage preventing line 32 are all 0.7mm, and the lengths of the non-penetrating parts are all 0.7mm. . Further, the interval between the lower end of the vertical sewing line 22 and the auxiliary breaking line 31 and the interval between the lower end of the vertical sewing line 22 and the breakage preventing line 32 are 3 mm, and between the lower end of the vertical sewing line 22 and the horizontal sewing line 21. The length was 5 mm (see FIG. 1).
The obtained heat-shrinkable cylindrical label was heat-shrink mounted on a lidded eye drop container having a circumferential length of about 63 mm and an axial length of about 52 mm to produce a container with a cylindrical label.

[Comparative example]
The tear strength was measured in the same manner as in Example except that a 50 μm thick polystyrene film (trade name “BS55S” manufactured by C-I Kasei Co., Ltd.) having heat shrinkability in one direction was used as the heat shrinkable film. And the container with a cylindrical label was produced.

[Opening test]
For each of the cylindrically labeled containers of the examples and comparative examples, ten testers picked the upper end portion of the heat-shrinkable cylindrical label between the vertical sewing machine wires 22 and pulled it downward. Draw in the direction and evaluated. As a result, Table 1 shows the number of people who were able to reliably cut the upper part of the sealing label along the horizontal perforation line 22 with one action.

In the heat-shrinkable cylindrical label of the example, almost anyone could easily and reliably remove the upper region of the heat-shrinkable cylindrical label.
On the other hand, the heat-shrinkable cylindrical label of the comparative example could not be removed easily and reliably by anyone.

  The present invention can be used when sealing a container with a lid.

DESCRIPTION OF SYMBOLS 1 Sealing label 10 Label main body 11 Knob part 21 Horizontal perforation line 22 Vertical perforation line 31 Vertical perforation line for auxiliary breaking (auxiliary breaking line)
32 Vertical perforation line for preventing breakage (breakage prevention line)
LM Label base material B Body C Lid CV Container with lid LV Container with label

Claims (9)

A cylindrical label body having heat shrinkability, with upper and lower ends opened,
A horizontal perforation line extending in the circumferential direction at a predetermined height position in the label body;
A pair of vertical perforations extending from the upper end of the label body to the lower side and not reaching the horizontal perforations;
An auxiliary breaking line arranged between the pair of vertical perforations in the circumferential direction of the label body,
The sealing label, wherein the auxiliary breaking line extends from a midway position in the longitudinal direction of the label main body to the horizontal perforation line or the vicinity thereof.   The sealed label according to claim 1, wherein the label main body has a circumferential tear strength smaller than a longitudinal tear strength.   The sealed label according to claim 2, wherein the label main body has a tear strength in the circumferential direction measured in accordance with JIS K 7128-1991 A method (trouser method) of 5 N / mm or less.   The sealed label according to claim 2 or 3, wherein the label body has a longitudinal tear strength of 20 N / mm or more measured in accordance with A method (trouser method) of JIS K 7128-1991.   5. The sealing label according to claim 1, wherein an upper end of the auxiliary breaking line is located above a lower end of the vertical perforation line.   6. A break prevention line extending downward from an intermediate position in the longitudinal direction of the label body is formed outside the pair of vertical perforations in the circumferential direction of the label body. Seal label as described in.   The part corresponding to between the pair of vertical perforations in the circumferential direction of the label body is formed with one or a plurality of cuts connected to the horizontal perforations. The sealing label according to 6.   The sealing label according to claim 6 or 7, wherein the break prevention line is separated from the horizontal perforation line.   The sealed label according to claim 1, 2, 3, 4, 5, 6, 7 or 8, wherein the label body is provided with an indication of an opening operation.

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