JP4287634B2 - Label continuum and labeled container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tack label that is adhered to an adherend while being peeled from a release paper, and particularly relates to a tack label having a heat insulating performance.
[0002]
[Prior art]
In recent years, foods such as soup and pasta sauce and foods made of fluids and fluids have been distributed in the state of being previously stored in cup-shaped packaging containers so that they can be easily heated in a microwave oven or the like. It is coming.
[0003]
Therefore, it is necessary to provide heat insulation performance to the packaging container that contains such foods so that the outer surface does not become extremely hot even when the contents are heated by a microwave oven. A method of forming the packaging container itself with a material having heat insulation performance or sticking a tack label or the like having heat insulation performance to a packaging container formed with a material not having heat insulation performance is conceivable.
[0004]
By the way, in order to prevent deterioration of contents, packaging containers that contain liquid foods such as soups and pasta sauces, fluid foods, etc. are required to have gas barrier performance and moisture proof performance, but have heat insulation performance. A packaging container formed of a foamed resin or the like does not have sufficient gas barrier performance, moisture proofing performance, and the like, and cannot be used as a packaging container for storing foods or the like made of such liquids or fluids for a long period of time.
[0005]
Therefore, foods made of such liquids or fluids do not have heat insulation performance, but use packaging containers that have gas barrier performance, moisture proof performance, etc., and have a heat insulation performance on the outer surface. A method of imparting heat insulation performance to the packaging container by applying a label must be employed.
[0006]
Thus, in recent years, the need for tack labels having heat insulation performance has increased, and as a tack label having such heat insulation performance, it is conceivable to form a label base material with a foamed resin.
[0007]
[Patent Document 1]
JP-A-64-84876
[Problems to be solved by the invention]
By the way, the tack label is usually supplied to the tack labeler in a state where it is stuck on a strip-shaped release paper. Therefore, when the tack label is sequentially stuck on an adherend such as a packaging container by the tack labeler, the stick label is attached. By reversing the release paper at an acute angle by a peel plate or the like at the attachment position, the tack label is attached to the adherend while sequentially separating the tack label from the release paper.
[0009]
However, as described above, a tack label in which the label base material is simply formed of foamed resin cannot secure sufficient waist strength in the direction in which the label base material is to be peeled off. Even if the pattern paper is inverted at an acute angle by a peel plate or the like, it is difficult to reliably remove the tack label from the release paper, and there is a problem that the tack label sticking work by the tack labeler cannot be performed smoothly.
[0010]
Then, the subject of this invention is providing the label continuous body and the container with a label which were equipped with the heat insulation performance and were excellent in the peelability with respect to a release paper.
[0011]
[Means for solving the problems and effects thereof]
To solve the above problems, the invention according to claim 1 is continuously adhered at predetermined intervals to tack label long strip of release paper having a heat insulating performance label substrate is formed by expanded polystyrene A label continuum that is attached, wherein the tack label is such that the label base is stretched in the longitudinal direction of the release paper, and at least the edge portion of the starting end with respect to the adherend is removed, The present invention provides a label continuum characterized in that its surface is coated with a varnish .
[0012]
As described above, since the label base material is stretched in the longitudinal direction of the release paper, the tack label of the continuous label body becomes strong in the same direction. Therefore, in this label continuous body, when the tack label is attached to the adherend while being peeled off from the release paper by the tack labeler , the tack label is removed from the release paper by simply inverting the release paper at an acute angle by a peel plate or the like. It can be easily and reliably peeled off, and it is possible to smoothly perform the sticking work of the tack label having such heat insulation performance by the tack labeler.
[0013]
Particularly, the tack label of this label continuum, label base material, since it is formed by expanded polystyrene, the waist becomes stronger tack labels, effect that release performance is further improved relative to the release paper.
[0014]
The printing, tack label of this label continuum, at least, to exclude the edge portion of the starting end sticking for pasting target body, since its surface is coated with varnish, formed on the surface of the label substrate The layer is protected, and the surface of the tack label is given slipperiness and gloss.
[0015]
On the other hand, since the overcoat layer formed of varnish has slipperiness as described above, when the tack labels are pasted so as to overlap each other, the tack labels in the overlapping part are There is a problem that the adhesive strength of the adhesive layer decreases and the overlapped outer tack label is easily peeled off.
[0016]
However, in this tack label, as described above, since the overcoat layer of varnish is not formed at least at the edge portion of the start end with respect to the adherend , for example, the paste end is overlapped with the start end. When attaching a single tack label to the adherend, or pasting multiple tack labels so that the end of one tack label overlaps the end of another tack label When sticking to the adherend, the adhesive strength between the tack labels at the overlap portion does not decrease, and in particular, at the overlap portion between the tack labels, the sticking surface of the adherend protrudes outward. Can be prevented from peeling (raising) the outer tuck label at the overlap portion. When attached manner to overlap Clavel, overlapping portions is less likely to slip, it is possible to perform the attaching work of the tack label according tack labeler smoothly and reliably.
[0017]
Moreover, in the labeled container of the invention according to claim 2 in which the above-described tack label is adhered to the outer peripheral surface of the trunk portion, the tack label having strong waist is adhered to the outer peripheral surface of the trunk portion of the container. The effect that the trunk is reinforced is obtained.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments will be described with reference to the drawings. The tack labels 1a and 1b shown in FIG. 1 are, as shown in FIGS. 5 (a) to 5 (c), the outer periphery of the body of a cup-shaped packaging container C formed by sheet-molding a plastic sheet filled and sealed with soup. It sticks to the surface. The tack labels 1a and 1b have heat insulation performance, and even if the opened packaging container C is heated by a microwave oven in a state where the soup as the contents is filled, it is stuck to the outer peripheral surface of the trunk portion. The outer surfaces of the tack labels 1a and 1b are not extremely heated.
[0019]
The tack labels 1a and 1b are formed in a substantially rectangular shape having R-shaped corner portions as shown in FIG. 1, and have a thickness of 100 to 400 (for example, 100 and 200) as shown in FIG. a label substrate 11 having a thickness of 1 μm, a display printing layer 12 having a thickness of 1 to 5 μm and an overcoat layer 13 having a thickness of 0.5 to 3 μm, which are sequentially laminated on the surface side of the label substrate 11, 11 and a pressure-sensitive adhesive layer 14 having a thickness of 20 to 50 μm laminated on the back surface side.
[0020]
As shown in FIG. 5C, the body of the packaging container C has a substantially rectangular cross-sectional shape in which each corner is curved in an R shape, and packaging is performed using two tack labels 1a and 1b. After sticking one tack label 1a on the left side and the back of the trunk of packaging container C so that the outer peripheral surface of the trunk of container C can be covered over the entire circumference, both ends of the tack label 1a The tack labels 1a and 1b are overlapped with each other (the pasting end and the pasting end) and the other tack label 1b can be stuck to the front and right side of the outer peripheral surface of the body of the packaging container C. It has a length of slightly over ½ of the entire circumference of the outer peripheral surface of the body portion of the packaging container C.
[0021]
Further, as shown in FIG. 3, the tack labels 1a and 1b are supplied to the tack labeler in a state of being stuck to the long strip-shaped release paper S, as shown in FIG. In addition, at each sticking position α, β, the release paper S is inverted at an acute angle by a peel plate PP or the like, so that the tack labels 1a, 1b are sequentially peeled from the release paper S, and the outer periphery of the body of the packaging container C It is designed to stick to the surface.
[0022]
The label substrate 11 is formed of a foamed polystyrene film in which a skin layer made of non-foamed polystyrene is laminated on the outer surface side, and the direction in which the tack label 1 is peeled from the release paper S, that is, the longitudinal direction of the tack label 1 It is stretched greatly.
[0023]
The expanded polystyrene constituting the label substrate 11 is mainly composed of general-purpose polystyrene (GPPS) or a resin obtained by copolymerizing polystyrene with butadiene, acrylonitrile, methacrylic acid, acrylic acid, acrylate esters, or the like. And a blend of additives, and those containing a styrene component of 70% by weight or more, preferably 80% by weight or more are strong and preferable. The expansion ratio of the expanded polystyrene is 2 to 10 times, and the thickness is 80 to 400 μm. On the other hand, the non-expanded polystyrene constituting the skin layer is GPPS or a styrene-based copolymer like the expanded polystyrene, and preferably has a styrene component of 70% by weight or more, and has a thickness of 3 to 20 μm. The skin layer can be formed by coextrusion of expanded polystyrene, and the skin layer may be laminated on both surfaces of expanded polystyrene.
[0024]
The display printing layer 12 is formed using a printing technique such as gravure printing, flexographic printing, letterpress printing, or the like. The display printing layer 12 is a soup product that is a content filled in the packaging container C. Names and characteristic designs are displayed. In addition, as ink which forms the display printing layer 12, oil-type ink, water-based ink, the type hardened | cured with an ultraviolet-ray or an electron beam, etc. can be used.
[0025]
The overcoat layer 13 is formed of a transparent varnish such as polyester, epoxy, or acrylic (for example, UV OP varnish manufactured by T & K TOKA Co., Ltd.). As shown, in the tack label 1a so as to completely cover the display print layer 12, as shown in FIG. The overcoat layer 13 is laminated on the display print layer 12 so as to exclude the end). Therefore, the overcoat layer 13 protects the display printing layer 12 formed on the surface of the label substrate 11 and imparts slipperiness and gloss to the surfaces of the tack labels 1a and 1b.
[0026]
The pressure-sensitive adhesive layer 14 can be formed of a known pressure-sensitive adhesive such as acrylic, rubber-based, or urethane-based, and has a thickness of 10 to 50 μm (for example, 25 μm).
[0027]
As described above, the tack labels 1a and 1b are stronger than the foamed polypropylene film and the like, the label base material 11 is formed of the foamed polystyrene film, and the direction to be peeled from the release paper S ( Since the label substrate 11 is stretched in the longitudinal direction), the waist is stronger than the longitudinal direction of the tack labels 1a and 1b. Accordingly, when the tack labels 1a and 1b are peeled off from the release paper S by the tack labeler and adhered to the outer peripheral surface of the body portion of the packaging container C, the release paper S is simply inverted by a peel plate PP or the like so as to be tacked. The labels 1a and 1b can be easily and reliably peeled off from the release paper S, and the sticking work of the tack labels 1a and 1b having such heat insulation performance by the tack labeler can be performed smoothly.
[0028]
In addition, the tack labels 1a and 1b have the property of easily tearing in the longitudinal direction because the label base 11 formed by the expanded polystyrene film is greatly stretched in the longitudinal direction. Since the corner portion is formed in an R shape, when the tack labels 1a and 1b are handled, the corner portions of the tack labels 1a and 1b are not easily caught and do not easily start to tear.
[0029]
In the labeled container configured as described above, the tack label 1a and the tack label 1b are overlapped at the corner portion of the packaging container C that is curved so that the outer peripheral surface of the body portion protrudes outward. Therefore, when the adhesive strength of the tack label 1b located on the outside is weakened, the strong tack label 1b is peeled off from the tack label 1a and floats, but the tack label 1a is overlapped with the tack label 1b. Since the overcoat layer 13 that hinders the adhesiveness is not formed at both end portions (the pasting end and the pasting end) in the longitudinal direction, the adhesive strength of the tack label 1b with respect to the tack label 1a does not decrease, and the overlap It is possible to prevent the tack label 1b from being lifted at the portion (the corner portion of the packaging container C).
[0030]
Further, as described above, the overcoat layer 13 formed of the transparent varnish has slipperiness. However, the overcoat layer 13 is formed on the tack label 1a in an overlapping portion with the tack label 1b. Therefore, when sticking the tack label 1b so as to overlap the tack label 1a, the overlap portion of the tack label 1b is not easily slipped, and the sticking operation of the tack label 1b by the tack labeler is smoothly and reliably performed. It can be carried out.
[0031]
Moreover, in this container with a label, since the tack labels 1a and 1b having heat insulation performance are stuck on the outer peripheral surface of the body of the packaging container C, the soup which is the contents fills the opened packaging container C. Even if heated by a microwave oven in the state where it is done, the outer surface of the tack labels 1a, 1b adhered to the outer peripheral surface of the body of the packaging container C does not become extremely hot, and the handleability is improved. Is obtained.
[0032]
Moreover, since the display printing layer 12 which displays a brand name, a characteristic figure, etc. is formed in the tack labels 1a and 1b, it is not necessary to perform the same display printing on the outer peripheral surface of the trunk portion of the packaging container C, Moreover, it can be finished more beautifully than the case where display printing is performed on the outer peripheral surface of the body of the packaging container C.
[0033]
Moreover, since the tack labels 1a and 1b attached to the outer peripheral surface of the trunk portion of the packaging container C are strong, the trunk portion of the packaging container C is reinforced by the strong tack labels 1a and 1b. There is also an effect that the shape retention is improved.
[0034]
In the above-described embodiment, the two tack labels 1a and 1b are attached so that the overlap portion is positioned at the corner portion of the outer peripheral surface of the body portion of the packaging container C. However, the embodiment is limited to this. For example, as shown in FIG. 6, the two tack labels 1 a and 1 b may be attached so that the overlap portions are respectively located on the right side surface and the left side surface of the trunk portion in the packaging container C. Is possible. In this case, since the overlap part is located in the flat part of the outer peripheral surface of the trunk part in the packaging container C and the overlap part of the tack label 1b is not easily lifted, the overcoat layer is formed on the entire surface instead of the tack label 1a. It is also possible to use a tack label 1b on which 13 is formed.
[0035]
Further, in the above-described embodiment, the tack label 1a on which the overcoat layer 13 is formed and the display printing layer 12 are completely covered so as to exclude both end portions (the pasting end and the pasting end) in the longitudinal direction. Although the case where two types of tack labels called the tack label 1b on which the coat layer 13 is formed is attached to the outer peripheral surface of the trunk portion of the packaging container C is not limited to this, the first tack label As shown in FIG. 7 (a), the overcoat layer can be removed so that only one end serving as the starting end is removed. As shown in FIG. 2B, the sticking end of the other tack label 2 is placed on the sticking end of one tack label 2 and the other tack label 2 is attached. One on the sticking edge The bonded end of the tack label 2, so as to overlap respectively, can be attached two tack labels 2.
[0036]
Moreover, although embodiment mentioned above demonstrated the case where the two tack labels 1a and 1b were stuck on the outer peripheral surface of the trunk | drum of packaging container C, it is not limited to this, As shown in FIG. Moreover, it is also possible to stick one tuck label 3 around the outer peripheral surface of the body of the packaging container C so that the pasting end is overlapped on the pasting end. In this case, needless to say, the overcoat layer 13 may be formed so as to exclude only the sticking end.
[0037]
Moreover, in embodiment mentioned above, although tack label 1a, 1b stuck to the packaging container C by which soup is filled and sealed was demonstrated, it is not limited to this, By a microwave oven like a pasta sauce The tack label of the present invention can be applied to a packaging container that fills and seals various foods that are to be heated.
[Brief description of the drawings]
FIGS. 1A and 1B are plan views showing one embodiment of a tack label according to the present invention.
FIG. 2 is a cross-sectional view showing the same tack label.
FIG. 3 is a plan view showing a supply state of the same tack label to a tack labeler.
FIG. 4 is an explanatory diagram for explaining a method for sticking a tack label according to the tack labeler.
5A is a perspective view showing a labeled container in which the same tack label is attached to a packaging container, FIG. 5B is a bottom view showing the labeled container, and FIG. 5C is labeled with the same label. It is a cross-sectional view which shows a container.
FIG. 6 is a cross-sectional view showing another embodiment of a labeled container.
7A is a plan view showing another embodiment of a tack label, and FIG. 7B is a cross-sectional view showing a labeled container in which the same tack label is attached to a packaging container.
FIG. 8 is a cross-sectional view showing another embodiment of a labeled container.
[Explanation of symbols]
1a, 1b, 2, 3 Tack label 11 Label substrate 12 Display printing layer 13 Overcoat layer 14 Adhesive layer C Packaging container S Release paper PP Peel plate

Claims (2)

Label substrate is a label continuum in which tack labels are continuously adhered at predetermined intervals to release paper long-strip having a heat insulating property formed by expanded polystyrene,
In the tack label, the label base material is stretched in the longitudinal direction of the release paper ,
A label continuum characterized in that the surface thereof is coated with a varnish so as to remove at least the edge portion of the starting end with respect to the adherend . A labeled container in which the tack label according to claim 1 is adhered to the outer peripheral surface of the trunk portion.

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