JP4753296B2 - Insulating adhesive label - Google Patents

Description

  In the present invention, when hot tea, coffee, soup, etc. are poured into a cup, the pressure-sensitive adhesive label stuck on the cup surface partially shrinks to generate a wrinkle and express heat insulation. It is related with the heat insulation expression adhesive label to do.

Conventionally, what was disclosed by patent document 1 is known as a heat insulation container which affixed the adhesive label which expresses heat insulation, for example.
The heat insulation container of patent document 1 is comprised from a thin container and the laminated body fixed to the surrounding wall part. In the laminate, a backing sheet and a heat-shrinkable film having different heat shrinkage rates are bonded to each other at a plurality of spaced-apart bonding portions, and are fixed to the peripheral wall portion on the side of the heat-shrinkable film having a large heat shrinkage rate. . When high temperature coffee or the like is poured into the container, the heat shrink film is shrunk by the heat, and as a result, wavy wrinkles are generated, resulting in heat insulation.
In the laminate, at least one bonding portion among the plurality of bonding portions connecting the mount and the heat shrink film is provided with a substantially I-shaped score line. When the heat shrink film shrinks, the I-shaped cut line portion opens like a window, thereby enhancing the visual appeal effect.

  However, in the above heat insulating container, since a substantially I-shaped cut line is formed in the bonding portion, when the laminate is bonded to the curved wall surface of the thin container, at the location of the I-shaped cut line There is a problem that the laminate is warped.

Furthermore, since the fixing portion having a predetermined width is provided in the vertical direction at the center portion in the left-right direction of the laminate, the laminate is fixed to the peripheral wall of the container only in the fixing portion. There are some disadvantages.
That is, when the laminated body is attached to the outer surface of the thin container with the heat shrink film having a large heat shrinkage rate in the laminated body on the inside, the lateral ends of the laminated body are not fixed, so the outer surface of the thin container As a result, the laminated body may be peeled off and dropped during handling of the thin-walled container.

JP 2001-240152 A

  Therefore, the object of the present invention is to partially shrink the adhesive label attached to the cup surface when hot tea, coffee, soup, etc. are poured into the paper cup with the paper cup attached to the side. When the wrinkles are generated, heat insulation can be expressed, and the laminate does not warp even when pasted on a curved wall such as a paper cup. Since both sides of the left and right direction are adhered to the wall surface, it is an object of the present invention to provide an adiabatic expression pressure-sensitive adhesive label in which the pressure-sensitive adhesive label does not peel and fall off during handling of the paper cup.

The present invention has been developed to effectively solve the above-described problems, and provides a heat-insulating adhesive label having the following characteristics.
The heat-insulating adhesive label of the present invention is composed of a quadrilateral laminate formed by laminating a non-heat-shrinkable substrate and a heat-shrinkable film. The non-heat-shrinkable substrate and the heat-shrinkable film are composed of “an edge bonded portion formed along two opposite sides of the quadrilateral”, “a central bonded portion formed at the center between the edge bonded portions” and “the center It is bonded by an “intermediate bonded portion formed between the bonded portion and the edge bonded portion”.
Further, on the outer surface of the heat-shrinkable film, “a central adhesive layer located on both sides of the central adhesive portion” and “an edge adhesive layer located along the two opposite sides of the quadrilateral” are formed. ing. And, it passes through the upper and lower edges of the vertical cut line so as to connect between the “longitudinal cut line extending in the central adhesive part and having at least one discontinuous part” and the intermediate adhesive part on both sides adjacent to the central adhesive part. A transverse cut line extending through the entire thickness of the laminate.

In the heat insulating expression pressure-sensitive adhesive label of the present invention having the above-described configuration, when hot tea, coffee, soup, etc. are poured into the cup in a state where it is affixed to the side of a paper cup or the like, it is adhered to the cup surface The heat-shrinkable film of the adhesive label shrinks, and wavy wrinkles (bulging parts) are formed on the non-heat-shrinkable base material between the non-heat-shrinkable base material and the heat-shrinkable film. As a result, an air layer is formed between the non-heat-shrinkable base material and the side surfaces of the paper cup and the like, and heat insulation is developed. Therefore, it is possible to obtain a heat insulating effect that the paper cup is not heated even by hand.
Moreover, in the heat insulation expression adhesive label of this invention, since the edge adhesive layer is provided along 2 sides which a quadrilateral laminated body opposes, in the state which affixed the said label to a paper cup etc., both ends of a label The edge is adhered to a paper cup or the like. For this reason, when handling a paper cup etc., a heat insulation expression adhesive label does not peel and drop, but handling becomes easy.
Furthermore, since the discontinuity part (blade stopper) is formed in the vertical cut line, due to the curvature of the curved wall surface such as the paper cup to which the heat insulating expression adhesive label is attached, The label does not warp, and handling of a paper cup or the like becomes extremely easy.

  It is preferable that two intermediate bonding portions are formed on both sides of the central bonding portion. In that case, when hot water is poured into a paper cup or the like to which a heat-insulating adhesive label is attached, a non-heat-shrinkable group is formed between the bonded portions of the laminated non-heat-shrinkable substrate and the heat-shrinkable film. Since the material swells in six places, excellent heat insulation is obtained.

As the heat-shrinkable film, it is preferable to employ any of a lateral uniaxially stretched polyester film, a laterally uniaxially stretched polypropylene film, and a laterally uniaxially stretched polystyrene film. The heat-shrinkable film is arranged with its stretching direction orthogonal to the edge adhesion portion.
When such a configuration is adopted, the heat-shrinkable film shrinks in the lateral direction, which is convenient for causing a wavy bulge extending in parallel with the edge bonding portion.

In the present invention, the central pressure-sensitive adhesive layer and the edge pressure-sensitive adhesive layer have an adhesive strength to the paper cup surface of 100 g / 20 mm or more and 3000 g / 20 mm or less (JIS Z-0237), under an atmosphere of 100 ° C. The adhesive strength to the paper cup surface is preferably 250 g / 20 mm or more.
In order to reliably prevent the heat-insulating expression adhesive label from peeling off from the paper cup, etc. during handling of the paper cup with the heat-insulating expression adhesive label attached or when pouring hot water into the paper cup, etc. The pressure-sensitive adhesive layer preferably has such physical properties.

Embodiments of the present invention will be described below with reference to the drawings.
1 is a plan view showing a heat-insulating adhesive label 1 according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line II of FIG. 1, and FIG. 3 is a heat-insulating property according to the second embodiment of the present invention. FIG. 4 is a perspective view showing a state where the heat insulating expression adhesive label of FIG. 1 is attached to a paper cup, and FIG. 5 shows the heat insulating property of the heat insulating expression adhesive label 1 of FIG. FIG.
In the figure, reference numerals 1 and 1 ′ are heat-insulating adhesive labels, 21 is a central adhesive part, 22 is an edge adhesive part, 23 is an intermediate adhesive part, 31 is a central adhesive layer, 32 is an edge adhesive layer, 4, 4 ′ are vertical cut lines, 5 are horizontal cut lines, 6 are blade stoppers, 7 are paper cups, 8 is a bulge, 10 is a laminate, 11 is a non-heat-shrinkable substrate, and 12 is a heat-shrinkable film. Respectively.

The heat-insulating expression adhesive label 1 according to the first embodiment of the present invention is a horizontally long quadrilateral as shown in FIG. As shown in FIG. 2, the label 1 has a non-heat-shrinkable base material 11 and a heat-shrinkable film 12 bonded together by a center bonding portion 21, an edge bonding portion 22, and an intermediate bonding portion 23. It is comprised by the laminated body 10 which becomes.
The edge bonding portion 22 is a bonding portion formed along two opposing sides of the quadrilateral. The central adhesive portion 21 is an adhesive portion formed in a longitudinal belt shape at the center position between the edge adhesive portions 22 and 22. The intermediate adhesive portion 23 is an adhesive portion formed in a vertical band shape between the central adhesive portion 21 and the edge adhesive portion 22.

  In the present invention, the outer shape of the label 1 is not limited to the illustrated one as long as it is a quadrilateral. Further, the adhesive portions 21, 22, and 23 extending in a strip shape do not necessarily have to continuously extend from the upper end edge to the lower end edge of the label 1.

  A horizontal H-shaped cut line composed of a vertical cut line 4 and a horizontal cut line 5 is formed at the center in the left-right direction of the horizontally long quadrilateral label 1. The vertical cut line 4 is formed between positions on the inner side of the label at a predetermined distance from the upper and lower edges of the label, and extends linearly along the vertical direction of the label at a substantially central position in the width direction of the central adhesive portion 21. Yes. The horizontal cut line 5 extends from the central bonded portion 21 to the substantially central position of the adjacent intermediate bonded portions 23 so as to contact the upper and lower edges of the vertical cut line 4.

The vertical cut line 4 and the horizontal cut line 5 forming the horizontal H-shaped cut line are cut and formed so as to penetrate the entire laminate 10 composed of the non-heat-shrinkable base material 11 and the heat-shrinkable film 12. However, the vertical cut line 4 is interrupted at the position of the blade stopper 6.
That is, the blade stopper 6 is a portion where the cut line is interrupted, and the non-heat-shrinkable base material 11 and the heat-shrinkable film 12 are not cut at the blade stopper 6 portion.

FIG. 3 is a plan view showing a heat-insulating adhesive label 1 ′ according to the second embodiment of the present invention. As shown in FIG. 3, the label 1 ′ is the first embodiment shown in FIG. 1 except that the blade stoppers 6 are formed at three locations on the longitudinal cut line 4 ′ forming the horizontal H-shaped cut line. The form is the same.
That is, in the label 1 ′ of the second embodiment, a total of three blade stoppers 6 are formed at the center position on the vertical cut line 4 ′ and the positions near the upper and lower end edges.
In the present invention, the number and position of the blade stoppers 6 formed on the vertical cut line are arbitrary, and the laminate constituting the heat-insulating adhesive label can be prevented from warping along the vertical cut line. For example, a configuration other than that illustrated may be used.

  On the outer surface of the heat-shrinkable film 12 (the surface that is attached to the peripheral wall surface of the cup), the central adhesive layer 31 is vertically striped on both sides of the central longitudinal cut line 4 with a predetermined spacing. Is formed. Moreover, the edge adhesive layer 32 is formed in the strip | belt shape of the vertical direction along two sides which a quadrilateral opposes, respectively.

The heat-insulating adhesive label 1 is used by sticking to the wall surface of a container such as a paper cup as shown in FIG. 4, and the same label 1 is also applied to the other wall surface that does not appear in FIG. Affixed approximately symmetrically.
When the pressure-sensitive adhesive label 1 having a heat insulating property is attached to the wall surface of the paper cup, the label 1 is fixed to the paper cup by the central adhesive layer 31 and the edge adhesive layers 32 at both ends. The sex expressing pressure-sensitive adhesive label 1 does not peel off and fall off. The edge adhesive layer 32 preferably has a width dimension of 2 mm or more so that the left and right ends of the label 1 are securely fixed to the wall surface of the paper cup.
Moreover, since the blade stopper 6 is provided in the vertical cut lines 4 and 4 ', the laminated body 10 which comprises the heat insulation expression adhesive label 1 does not curve from the location along the vertical cut lines 4 and 4'. During the handling of the paper cup 7, the heat insulating expression adhesive label 1 is not peeled off or dropped off.

As shown in FIG. 4, when hot tea, coffee, soup or the like is poured into a paper cup to which the heat-insulating adhesive label 1 is attached, the heat-shrinkable film constituting the label 1 shrinks in the lateral direction. In the non-heat-shrinkable base material 11, the longitudinal wavy bulging portion 8 is formed.
In the region sandwiched between the upper and lower horizontal cut lines 5 and 5 in the center of the label, the non-heat-shrinkable base material 11 between the central adhesive portion 21 and the intermediate adhesive portions 23 on both sides adjacent thereto shrinks. The part of the vertical cut line 4 is separated into left and right. As a result, a wavy bulging portion 8 is formed in the non-heat-shrinkable base material 11, and the wall surface of the paper cup is exposed at the position of the longitudinal cut line 4 (see FIG. 5).
Further, on the side end side of the central adhesive layer 31, the non-heat-shrinkable base material 11 of the laminate 10 contracts, whereby the edge adhesive layer 32 is peeled off from the paper cup surface, and the adjacent intermediate adhesive portion In the region between 23 and the region between the intermediate bonding portion 23 and the edge bonding portion 22, the bulging portion 8 made of the non-heat-shrinkable base material 11 is formed.
As a result of the above, three bulging portions 8 are formed on both sides of the center of the label (total of six), and the air layer formed between the bulging portion 8 and the paper cup is superior. Thermal insulation is obtained.
In addition, the same effect is acquired also in the heat insulation expression adhesive label 1 'of 2nd Embodiment.

  In the illustrated example, two intermediate bonding portions 23 are formed in a band shape in the vertical direction at equal intervals between the central bonding portion 21 and the edge bonding portion 22. However, the number of intermediate bonding portions 23 may be one or three or more, and the number can be arbitrarily set. The intermediate bonding portion 23 is preferably formed between the central bonding portion 21 and the edge bonding portion 22 at substantially equal intervals.

  The heat-insulating adhesive labels 1 and 1 ′ are provided in a state where release paper (not shown) is laminated on the surface of the central adhesive layer 31 and the edge adhesive layer 32 formed on the heat-shrinkable film 12. Is done. When the labels 1 and 1 ′ are fixed to the wall surface of a paper cup or the like, the release paper is peeled off, and the labels 1 and 1 ′ are fixed by the exposed central adhesive layer 31 and the edge adhesive layer 32.

  In the illustrated example, the central pressure-sensitive adhesive layer 31 and the edge pressure-sensitive adhesive layer 32 are formed in a band shape only at specific positions on the outer surface of the heat-shrinkable film, but the pressure-sensitive adhesive is formed on the entire outer surface of the heat-shrinkable film. After the layer is formed, a resin layer is formed by printing on the area that does not require the adhesive layer, and a belt-like adhesive layer (central adhesive layer and edge adhesive layer) is formed between them. It may be configured to be exposed.

  In the example shown in the figure, since two intermediate bonding portions 23 are provided on each side of the central bonding portion 21, six bulging portions 8 are formed. However, the present invention is not limited to such a configuration. For example, if the number of intermediate bonding portions is changed, the number of wavy bulging portions formed by the non-heat-shrinkable base material can be changed. . If the width in the left-right direction of the heat-insulating pressure-sensitive adhesive label is increased and the number of intermediate adhesive portions is increased, the number of bulging portions is increased, and the region having heat insulating properties can be expanded.

The non-heat-shrinkable substrate 11 is not particularly limited as long as it has non-heat-shrinkability, but generally paper such as art paper, synthetic paper, or the like is used. As the heat-shrinkable film 12, a laterally uniaxially stretched polyester film, a laterally uniaxially stretched polypropylene film, a laterally uniaxially stretched polystyrene film or the like that is uniaxially stretched in the transverse (TD) direction can be used.
By using a lateral uniaxially stretched plastic film, the heat-insulating adhesive label can be contracted only in the lateral direction. That is, if the heat-shrinkable film is arranged so that the extending direction of the heat-shrinkable film is orthogonal to the edge bonding portion 22, the heat-shrinkable film contracts in the left-right direction in FIG. This is convenient for causing the wavy bulging portion 8 to appear.

As the pressure-sensitive adhesive composition for forming the pressure-sensitive adhesive layer used in the heat-insulating expression pressure-sensitive adhesive label of the present invention, it is preferable to use a pressure-sensitive adhesive composition made of an acrylic resin having excellent heat resistance. The adhesive strength to the surface is preferably in the range of 100 g / 20 mm to 3000 g / 20 mm (JIS Z-0237), and the adhesive strength to the paper cup surface in an atmosphere of 100 ° C. is preferably 250 g / 20 mm or more.
In addition, the pressure-sensitive adhesive layer must have heat resistance that prevents the heat-insulating adhesive label from falling out of the container when hot-water is poured into the container after the heat-insulating adhesive label is attached to the outer surface of a paper cup or other container. is there.

The heat-insulating expression pressure-sensitive adhesive labels 1 and 1 ′ of the present invention can be manufactured by the following procedure as an example.
(1) A double-sided art paper or the like is used as the non-shrinkable substrate 11 and a reference line is printed on the surface side of the substrate 11. As will be described later, this reference line corresponds to almost the entire width of one label.
(2) Adhesive is applied to a predetermined position on the back surface of the double-sided art paper in parallel at predetermined intervals and over a plurality of strip regions extending in the flow direction of the manufacturing process, and a heat-shrinkable film thereon 12 are laminated. The adhesive applied to each of the strip-like regions arranged in parallel constitutes the above-mentioned central adhesive portion 21, the edge adhesive portion 22, and the intermediate adhesive portion 23, respectively.
(3) A pressure-sensitive adhesive layer is formed on the entire surface of the heat-shrinkable film 12 opposite to the substrate 11, and a release paper is pasted on the pressure-sensitive adhesive layer surface.
(4) The obtained laminate is cut along a reference line to form an elongated strip. This strip is a series of a plurality of labels 1 and is finally divided into individual labels as will be described later.
(5) While peeling the release paper from the back side of the strip, the exposed adhesive layer is pattern coated with a paste-killing agent at intervals. In the area coated with the paste-killing agent, the adhesive layer loses its adhesiveness, so that only the area outside the coated area (that is, the central adhesive layer 31 and the edge adhesive layer 32) has adhesiveness. .
(6) After the pattern coating of the paste-killing agent is completed, the peeled release paper is pasted again. Thereafter, when the release paper is peeled off, the central pressure-sensitive adhesive layer 31 and the edge pressure-sensitive adhesive layer 32 are exposed. In this state, the labels 1 and 1 ′ can be fixed to a wall surface such as a paper cup.
(6) If necessary, a pattern is printed on the surface of double-sided art paper as the non-shrinkable substrate 11.
(7) The longitudinal laminate lines 4, 4 ′ having the desired positions and the number of blade stoppers 6 are simultaneously punched out into a quadrilateral label shape as shown in FIG. In addition, a cut line 5 is formed.
(8) Finally, scraps are wound up and wound up.

  As another example, the central adhesive layer 31 and edge adhesive that extend directly in parallel to the surface of the heat-shrinkable film surface 12 opposite to the base material 11 at a predetermined interval and in the flow direction of the manufacturing process. The agent layer 32 may be formed, and in that case, the step of killing can be omitted.

  As the paste-killing agent, a mixture of a printing ink and a release agent such as a silicone compound, an alkyl pendant polymer and a condensed wax can be used, and is formed by printing on a pressure-sensitive adhesive layer using a relief printing plate. In this way, the adhesiveness of the pressure-sensitive adhesive layer can be sealed with a killing agent by mixing silicone or the like with the printing ink.

The top view which shows 1st Embodiment of the heat insulation expression adhesive label of this invention. II sectional view taken on the line of FIG. The top view which shows 2nd Embodiment of the heat insulation expression adhesive label of this invention. The perspective view of the state which affixed the heat insulation expression adhesive label of 1st Embodiment on the paper cup. The perspective view corresponding to FIG. 4 of the state which expressed the heat insulation of the heat insulation expression adhesive label of 1st Embodiment stuck on the paper cup.

Explanation of symbols

1, 1 'Insulating adhesive label
21 Center adhesive
22 Edge bonding
23 Intermediate adhesive
31 Central adhesive layer
32 Edge adhesive layer 4, 4 'Vertical cut line 5 Horizontal cut line 6 Blade stopper 7 Paper cup 8 Swelling part
10 Laminate
11 Non-shrinkable substrate
12 Heat shrinkable film

Claims (4)

A heat-insulating pressure-sensitive adhesive label composed of a quadrilateral laminate formed by laminating a non-heat-shrinkable substrate (11) and a heat-shrinkable film (12),
A non-heat-shrinkable base material (11) and a heat-shrinkable film (12) are formed at the center between the edge bonding portion (22) formed along two opposing sides of the quadrilateral and the edge bonding portion. The central adhesive portion (21) and the intermediate adhesive portion (23) formed between the central adhesive portion and the edge adhesive portion,
On the outer surface of the heat-shrinkable film (12), a central pressure-sensitive adhesive layer (31) located on both sides of the central adhesive portion, and an edge pressure-sensitive adhesive layer (32) located along the two opposite sides of the quadrilateral Formed,
A vertical cut line (4, 4 ') extending into the central adhesive portion and having at least one discontinuity (6) and the vertical cut line above and below the intermediate adhesive portion on both sides adjacent to the central adhesive portion A heat-insulating pressure-sensitive adhesive label, characterized in that a transverse cut line (5) extending through an edge is formed so as to penetrate the entire thickness of the laminate.   The heat insulating adhesive label according to claim 1, wherein two intermediate adhesive portions (23) are formed on each side of the central adhesive portion (21). The heat-shrinkable film (12) is one of a lateral uniaxially stretched polyester film, a laterally uniaxially stretched polypropylene film, and a laterally uniaxially stretched polystyrene film,
The heat-insulating pressure-sensitive adhesive label according to claim 1 or 2, wherein the heat-shrinkable film (12) is arranged with its extending direction orthogonal to the edge adhesive portion (22). The central pressure-sensitive adhesive layer (31) and the edge pressure-sensitive adhesive layer (32) have an adhesive strength to the paper cup surface in the range of 100 g / 20 mm to 3000 g / 20 mm (JIS Z-0237), and in an atmosphere at 100 ° C. The adhesive strength adhesive label according to any one of claims 1 to 3, wherein the adhesive strength to the paper cup surface is 250 g / 20 mm or more.

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