JP2016190663A - Container with label and heat-shrinkable label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container with label which is easy to facilitate cutting of a heat-shrinkable label along an auxiliary line for cutting, and is excellent in openability.SOLUTION: There is provided a container 10 with label which has a container 9 having a container body 91 and a cap portion 92, and a heat-shrinkable label 1 mounted so as to be wound in a circumferential direction of the container 9 astride the container body 91 and the cap portion 92, where the heat-shrinkable label 1 has a heat-shrinkable substrate having a surface layer, a back layer and a middle layer having a resin layer which is provided between the surface layer and the back layer and contains an olefin-based elastomer as a main component resin, and auxiliary lines 25 and 26 for cutting formed in the plane of the heat-shrinkable substrate.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a labeled container in which a heat-shrinkable label is attached to an eye drop container or a prefilled syringe.

A heat-shrinkable label is attached to a container in which medicines such as eye drops, cosmetics, seasonings, beverages, foods and the like are stored. For example, a labeled container in which a heat-shrinkable label is mounted on an eye drop container is obtained by winding the heat-shrinkable label across the cap and the container body and then heating. Such a heat-shrinkable label includes, for example, a heat-shrinkable substrate, a printed layer provided on the front side of the heat-shrinkable substrate, and an adhesive layer provided on the back side of the heat-shrinkable substrate. In order to open the container with a label, the heat-shrinkable base material is formed with a perforation line.
Conventionally, a polyethylene terephthalate film has been used as a base material for the heat-shrinkable label because of its good transparency and low strength (for example, Patent Document 1).
However, since the polyethylene terephthalate film has a large orientation of the resin in the stretching direction, it is easy to tear in the main stretching direction (thermal shrinkage direction) of the film, but is difficult to tear in other directions, and follows the perforation line. It may be difficult to cut out the heat-shrinkable label.
Specifically, a heat-shrinkable base material made of a polyethylene terephthalate film that mainly heat-shrinks in the circumferential direction of the container is used for the heat-shrinkable label that is wound around the container in the circumferential direction. For example, a heat-shrinkable label in which a perforation line extending in the axial direction of the container (a direction orthogonal to the circumferential direction of the container) is formed on the heat-shrinkable base material is a heat-shrinkable base material along the perforation line. However, there is a problem that the cut line is deviated in the circumferential direction. In particular, since the heat-shrinkable label attached to a container having a small capacity has a small area relative to the container, the cut line is likely to be displaced.

JP 2007-083518 A

  An object of the present invention is to provide a labeled container and the like that are easy to cut a heat-shrinkable label along a dividing auxiliary line and that are excellent in openability.

  The present invention is a labeled container comprising: a container having a container body and a cap part; and a heat-shrinkable label mounted in the circumferential direction of the container across the container body and the cap part, A heat-shrinkable base material, wherein the heat-shrinkable label has a surface layer, a back layer, and an intermediate layer having a resin layer provided between the surface layer and the back layer and containing an olefin-based elastomer as a main component resin; And an auxiliary line for cutting formed in the plane of the heat-shrinkable substrate.

In a preferred labeled container of the present invention, the olefin elastomer includes a polypropylene elastomer.
In a preferred labeled container of the present invention, the front surface layer and the back surface layer are composed of a resin layer containing a polyolefin-based resin as a main component resin.
In a preferred labeled container according to the present invention, the polyolefin resin contains a cyclic olefin polymer.
In a preferred labeled container according to the present invention, the dividing auxiliary line includes a horizontal auxiliary line extending in the circumferential direction of the container, a vertical auxiliary line extending in the axial direction of the container, and an oblique direction extending in a direction inclined with respect to the axial direction of the container. At least one of the auxiliary lines.
In a preferred labeled container according to the present invention, the auxiliary line for cutting is a perforation line,
The length of the perforated through hole is 0.01 mm to 8 mm, and the length of the non-penetrating portion between adjacent through holes is 0.1 mm to 5 mm.
In a preferred labeled container according to the present invention, the dividing auxiliary line has a heat-shrinkable group in cooperation with an edge of the heat-shrinkable substrate or a cut line formed on the heat-shrinkable substrate, or an auxiliary line alone. An auxiliary line is formed so as to surround a partial region of the material.
In a preferred labeled container of the present invention, an adhesive layer is provided on the back surface of the heat-shrinkable substrate.

According to another aspect of the present invention, a heat shrinkable label is provided.
The heat-shrinkable label of the present invention has a heat-shrinkable label having a surface layer, a back surface layer, and an intermediate layer having a resin layer provided between the surface layer and the back surface layer and containing an olefin-based elastomer as a main component resin. A base material, and a dividing auxiliary line formed in the plane of the heat-shrinkable base material.

  In a preferred heat-shrinkable label of the present invention, the dividing auxiliary line is at least one of a horizontal auxiliary line extending in the horizontal direction, a vertical auxiliary line extending in the vertical direction, and an oblique auxiliary line extending in a direction inclined with respect to the vertical direction. And having.

  The container with a label of the present invention is easy to cut a heat-shrinkable label along the auxiliary line for cutting, and is excellent in openability.

The front view of the labeled container which concerns on 1st Embodiment. The rear view of the container with the label. The top view which looked at the container with the label from the top | upper surface side of the cap part. The bottom view which looked at the container with the label from the bottom face side of the container main body. The front view of a container. The top view which looked at the heat-shrinkable label which concerns on the 1st example of 1st Embodiment from the surface side. The top view which looked at the heat-shrinkable label from the back side. The cross-sectional view cut | disconnected by the VIII-VIII line of FIG. The cross-sectional view of the heat-shrinkable label according to the second example of the first embodiment (the heat-shrinkable label of the second example is cut at the same place as the line VIII-VIII in FIG. 7). The cross-sectional view of the heat-shrinkable label according to the third example of the first embodiment (the heat-shrinkable label of the third example is cut at the same place as the line VIII-VIII in FIG. 7). It is a reference drawing which shows the manufacturing procedure of a heat-shrinkable label, Comprising: (a) is a side view of the base material raw material temporarily attached to the release paper, (b) is a perforation line and a cut line in the base material raw material. The top view of the process of forming (c) is a side view of the process of removing the unnecessary area | region of a base material original fabric, (d) is the top view of the manufactured heat-shrinkable label. The perspective view of the heat-shrinkable label which concerns on the modification of 1st Embodiment. The top view which looked at the heat-shrinkable label which concerns on 2nd Embodiment from the back surface side. (A) is a front view of the labeled container which concerns on 2nd Embodiment, (b) is the sectional drawing. (A) is the top view which looked at the heat-shrinkable label which concerns on the 1st example of 3rd Embodiment from the back surface side, (b) is the back surface side of the heat-shrinkable label which concerns on the 2nd example of 3rd Embodiment. (C) is the top view which looked at the heat-shrinkable label which concerns on 3rd example of 3rd Embodiment from the back surface side, (d) is the heat which concerns on 4th example of 3rd Embodiment. The top view which looked at the shrinkable label from the back side. (A) is a front view of the labeled container which concerns on 3rd Embodiment, (b) is a front view after opening the labeled container. The top view which looked at the heat-shrinkable label which concerns on 4th Embodiment from the surface side. The perspective view of the heat-shrinkable label which concerns on 5th Embodiment. (A), (b) is the top view which looked at the heat-shrinkable label which concerns on 6th Embodiment from the surface side.

Hereinafter, the present invention will be specifically described with reference to the drawings.
In the present specification, the “lateral direction” of the heat-shrinkable substrate (and heat-shrinkable label) is the direction that becomes the circumferential direction of the container when the heat-shrinkable label is attached to the container, and is heat-shrinkable. The “longitudinal direction” of the base material (and the heat-shrinkable label) is a direction orthogonal to the lateral direction in the plane of the heat-shrinkable base material (the axial direction of the container when the heat-shrinkable label is attached to the container) Direction). Further, “upper” refers to the first longitudinal side of the heat-shrinkable substrate, “lower” refers to the second longitudinal side of the heat-shrinkable substrate (the opposite side to the first longitudinal direction), “Left” refers to the first lateral side of the heat-shrinkable substrate, and “right” refers to the second lateral side of the heat-shrinkable substrate (the side opposite to the first lateral direction).
Note that the dimensions and scales of the parts and layers shown in each figure are different from the actual ones.

[First Embodiment]
1 to 4, the labeled container 10 of the present invention includes a container 9 and a heat-shrinkable label 1 on which auxiliary cutting lines 25 and 26 are formed.
The container 9 includes a container main body 91 and a cap portion 92.
The heat-shrinkable label 1 is mounted across the container main body 91 and the cap portion 92. The upper portion 1a of the heat-shrinkable label 1 (the upper portion 1a includes a knob 29) is bent to the top surface side of the cap portion 92 and is locked to the peripheral end portion of the top surface. The lower portion 1b of the heat-shrinkable label 1 is bent toward the bottom surface side of the container main body 91 and is locked to the peripheral end portion of the bottom surface.
Hereinafter, after explaining the details of the container and the heat-shrinkable label, the labeled container of the present invention will be described more specifically.

(container)
As shown in FIG. 5, the container 9 includes a container main body 91 for containing contents, and a cap portion 92 that closes the spout of the container main body 91 and is detachably attached to the container main body 91. For example, the cap portion 92 is attached to the container main body 91 by a screw action. Specifically, the cap portion 92 is screwed into the container main body 91 by turning clockwise when viewed from the upper side of the container, and can be removed from the container main body 91 by turning counterclockwise. it can.
The container main body 91 in the illustrated example has a barrel portion that stores the contents, and a threaded cylinder portion (not shown) formed above the barrel portion. The outer shape of the body portion is a required cross-sectional shape such as a substantially circular shape, a substantially quadrangular shape, a substantially hexagonal shape, or a substantially elliptical shape in a horizontal section view, and is three-dimensionally a straight body shape. The straight body shape is a shape in which the circumferential length does not differ between the upper and lower sides. The trunk portion in the illustrated example is substantially cylindrical. The cap portion 92 has a truncated cone shape (a shape in which the circumferential length increases as it goes downward), and is externally fitted to the threaded cylinder portion and screwed. Accordingly, the threaded cylinder portion is covered with the cap portion 92 and is not exposed, and the lower edge of the cap portion 92 is located immediately above the trunk portion. Moreover, the lower end of the cap part 92 and the upper end of the trunk | drum are substantially the same perimeter.

The contents stored in such a container 9 are not particularly limited, and examples thereof include pharmaceuticals, cosmetics, seasonings, foods, beverages, and machine parts. In addition, the container in which the medicine is stored is also called a medical container, and includes, for example, an eye drop container, a prefilled syringe, an ampule, and a vial bottle. The container in the illustrated example is an eye drop container.
The heat-shrinkable label of the present invention is preferably attached to a container 9 having a relatively small volume for storing contents. For example, it is attached to a container 9 having a volume of 1 ml to 200 ml, preferably 2 ml to 100 ml, more preferably 3 ml to 50 ml.

As will be described later, since the heat-shrinkable label 1 of the present invention is also excellent in water vapor barrier properties, it is preferable to attach it to a synthetic resin container. That is, by attaching the heat-shrinkable label 1 of the present invention to a synthetic resin container having a high water vapor permeability as compared with a glass or metal container, external moisture enters the inside of the container, and The moisture inside the container can be prevented from being released to the outside of the container.
Examples of the container body of the synthetic resin container include polyvinyl chloride resin, polyamide resin, polystyrene resin, polyester resin, polyolefin resin (for example, cyclic olefin resin, polyethylene resin, polypropylene resin, etc. ) And the like. In particular, it is preferable to attach the heat-shrinkable label 1 of the present invention to a container having a container body made of polyolefin resin. In addition, although the material of the cap part of the container which has the said container body made from a synthetic resin is not specifically limited, For example, the above synthetic resins are mentioned. In one example, it is preferable that the container main body and the cap portion of the container are formed of a polyolefin resin.
In addition, a relatively thin synthetic resin container body (for example, a synthetic resin container body having a thickness of 0.3 mm to 1.5 mm) tends to have high water vapor permeability.
For example, a medical container containing eye drops or the like may use a polyolefin resin container as described above (for example, an eye drop container having a container body made of a polyolefin resin such as a polyethylene resin).

(Heat shrinkable label)
6 to 8, the heat-shrinkable label 1 includes a heat-shrinkable base material 2 having a substantially rectangular shape in plan view, and perforation lines 25 and 26 formed in the surface of the heat-shrinkable base material 2. Have. Preferably, the heat-shrinkable label 1 has the heat-shrinkable label 1, the perforation lines 25 and 26, and the pressure-sensitive adhesive layer 3 provided on the back side of the heat-shrinkable substrate 2. Furthermore, it has the design printing layer 4. In addition, the heat-shrinkable label 1 may have other layers (not shown), such as a surface protective layer, other than these as needed.
The planar shape of the heat-shrinkable label 1 (heat-shrinkable substrate 2) is usually a substantially rectangular shape (or a substantially square shape). A knob 29 is extended at the first longitudinal end of the heat-shrinkable substrate 2. The knob 29 is formed, for example, in a substantially semicircular shape in plan view.

<Heat-shrinkable substrate>
The heat-shrinkable substrate 2 has a surface layer 5, a back surface layer 6, and an intermediate layer 7 between the surface layer 5 and the back surface layer 6. The intermediate layer 7 may be composed of one resin layer, or may be composed of two or more resin layers. When the intermediate layer 7 is composed of two or more resin layers, the number of laminated layers is two or more, preferably 3 to 35 layers.
The intermediate layer 7 includes a resin layer containing an olefin-based elastomer as a main component resin. Hereinafter, a resin layer containing an olefin elastomer as a main component resin may be referred to as an “elastomer layer”. The heat-shrinkable base material 2 in which the intermediate layer 7 has an elastomer layer easily breaks not only in the main heat-shrink direction but also in a direction perpendicular thereto.
Here, in the present specification, the main component resin refers to a resin (mass basis) of a system having the largest amount among resins contained in each layer.

The said surface layer 5 and the back surface layer 6 are comprised from arbitrary resin layers. That is, the front surface layer 5 and the back surface layer 6 may be independently composed of an elastomer layer or may be composed of a resin layer other than the elastomer layer.
The front surface layer 5 and / or the back surface layer 6 is composed of, for example, a resin layer containing a polyolefin resin as a main component resin. Preferably, the front surface layer 5 and the back surface layer 6 both have a polyolefin resin as a main component resin. It consists of a resin layer. Since the heat-shrinkable base material 2 having a relatively strong stiffness can be formed, the front surface layer 5 and the back surface layer 6 are more preferably both formed of a resin layer containing a cyclic olefin polymer as a main component resin. Hereinafter, a resin layer containing a polyolefin resin as a main component resin is referred to as an “olefin layer”, and among those polyolefin resins, a resin layer including a cyclic olefin polymer as a main component resin is particularly referred to as a “cyclic olefin layer”. There is.

When the intermediate layer 7 is composed of one resin layer, the one resin layer is composed of an elastomer layer, and when the intermediate layer 7 is composed of a laminated structure of two or more resin layers, at least one of them is It is composed of an elastomer layer (that is, the intermediate layer 7 composed of one resin layer or two or more resin layers includes an elastomer layer).
When the intermediate layer 7 is composed of two or more resin layers, all the resin layers may be composed of elastomer layers, and one or more of the resin layers are composed of elastomer layers and the remaining resin layers are You may be comprised from resin layers other than an elastomer layer and an olefin layer. Hereinafter, a resin layer other than the elastomer layer and the olefin layer (a resin layer containing a resin other than the polyolefin resin and the olefin elastomer as a main component resin) is referred to as “another resin layer”.
Alternatively, when the intermediate layer 7 is composed of two or more resin layers, one or more of the resin layers may be composed of an elastomer layer and the remaining resin layer may be composed of an olefin layer.
When the intermediate layer 7 is composed of two or more resin layers, it is preferable that an elastomer layer and at least one layer selected from an olefin layer and another resin layer are alternately laminated.
In addition, the said surface layer 5 and / or the back surface layer 6 may be comprised from the other resin layer.

  Further, when the intermediate layer 7 is composed of two or more resin layers, and when two or more of the resin layers are composed of an elastomer layer, each elastomer layer contains an olefin elastomer content. May be the same, and the content of the olefin-based elastomer may be different. When the two or more resin layers are composed of an elastomer layer, all of the elastomer layers may be an elastomer layer having the same content of the olefin-based elastomer, or include a desired amount of the olefin-based elastomer. You may be comprised from the elastomer layer and the elastomer layer in which content of an olefin type elastomer is smaller than the elastomer layer. Hereinafter, an elastomer layer containing a desired amount of an olefin-based elastomer is sometimes referred to as a “first elastomer layer”, and an elastomer layer having a smaller olefin-based elastomer content than the first elastomer layer is sometimes referred to as a “second elastomer layer”. .

For example, the heat-shrinkable substrate 2 in the heat-shrinkable label 1 shown in FIG. 8 is composed of a two-layer / three-layer laminated film of an intermediate layer 71 / back surface layer 6 of a surface layer 5/1 layer. In this case, the intermediate layer 71 is composed of an elastomer layer.
The heat-shrinkable substrate 2 in the heat-shrinkable label 1 shown in FIG. 9 is composed of laminated films of intermediate layers 71, 72, 73 / back surface layer 6 having a surface layer 5/3 layer structure. In this case, examples of combinations of the intermediate layers 71, 72, and 73 (first intermediate layer 71 / second intermediate layer 72 / third intermediate layer 73) having a three-layer structure include the following.
(1) first intermediate layer 71 / second intermediate layer 72 / third intermediate layer 73 = second elastomer layer / first elastomer layer / second elastomer layer,
(2) first intermediate layer 71 / second intermediate layer 72 / third intermediate layer 73 = first elastomer layer / second elastomer layer / first elastomer layer,
(3) first intermediate layer 71 / second intermediate layer 72 / third intermediate layer 73 = other resin layer / elastomer layer (first elastomer layer or second elastomer layer) / other resin layer,
(4) first intermediate layer 71 / second intermediate layer 72 / third intermediate layer 73 = elastomer layer (first elastomer layer or second elastomer layer) / other resin layer / elastomer layer (first elastomer layer or second elastomer) layer).
(5) first intermediate layer 71 / second intermediate layer 72 / third intermediate layer 73 = olefin layer / elastomer layer (first elastomer layer or second elastomer layer) / olefin layer,
(6) first intermediate layer 71 / second intermediate layer 72 / third intermediate layer 73 = elastomer layer (first elastomer layer or second elastomer layer) / olefin layer / elastomer layer (first elastomer layer or second elastomer layer) ).
In the intermediate layer 71 having a three-layer structure, one structure selected from the above (1), (3) and (5) is preferable.
In the example shown in FIG. 9, the second intermediate layer 72 is disposed at the center in the thickness direction of the heat-shrinkable substrate 2.

The heat-shrinkable substrate 2 in the heat-shrinkable label 1 shown in FIG. 10 is composed of laminated films of intermediate layers 71, 72, 73, 74, 75 / back surface layer 6 having a surface layer 5/5 layer structure. In this case, the intermediate layers 71, 72, 73, 74, 75 having the five-layer structure (first intermediate layer 71 / second intermediate layer 72 / third intermediate layer 73 / fourth intermediate layer 74 / fifth intermediate layer 75) Examples of combinations include the following.
(1) First intermediate layer 71 / second intermediate layer 72 / third intermediate layer 73 / fourth intermediate layer 74 / fifth intermediate layer 75 = first elastomer layer / second elastomer layer / first elastomer layer / second Elastomer layer / first elastomer layer,
(2) first intermediate layer 71 / second intermediate layer 72 / third intermediate layer 73 / fourth intermediate layer 74 / fifth intermediate layer 75 = second elastomer layer / first elastomer layer / second elastomer layer / first Elastomer layer / second elastomer layer,
(3) First intermediate layer 71 / second intermediate layer 72 / third intermediate layer 73 / fourth intermediate layer 74 / fifth intermediate layer 75 = elastomer layer (first elastomer layer or second elastomer layer) / other resin layer / Elastomer layer (first elastomer layer or second elastomer layer) / Other resin layer / Elastomer layer (first elastomer layer or second elastomer layer),
(4) first intermediate layer 71 / second intermediate layer 72 / third intermediate layer 73 / fourth intermediate layer 74 / fifth intermediate layer 75 = other resin layer / elastomer layer (first elastomer layer or second elastomer layer) / Other resin layer / Elastomer layer (first elastomer layer or second elastomer layer) / Other resin layer.
(5) first intermediate layer 71 / second intermediate layer 72 / third intermediate layer 73 / fourth intermediate layer 74 / fifth intermediate layer 75 = elastomer layer (first elastomer layer or second elastomer layer) / olefin layer / Elastomer layer (first elastomer layer or second elastomer layer) / olefin layer / elastomer layer (first elastomer layer or second elastomer layer),
(6) first intermediate layer 71 / second intermediate layer 72 / third intermediate layer 73 / fourth intermediate layer 74 / fifth intermediate layer 75 = olefin layer / elastomer layer (first elastomer layer or second elastomer layer) / Olefin layer / elastomer layer (first elastomer layer or second elastomer layer) / olefin layer.
In the example shown in FIG. 10, the third intermediate layer 73 is disposed at the center in the thickness direction of the heat-shrinkable substrate 2.

The thickness of the heat-shrinkable substrate 2 is not particularly limited, and is, for example, 20 μm to 100 μm, preferably 25 μm to 60 μm.
Although the thickness of the surface layer 5 and the back surface layer 6 is not specifically limited, 1 micrometer-20 micrometers are preferable each independently, More preferably, they are 1.5 micrometers-10 micrometers, More preferably, they are 2 micrometers-8 micrometers.
The total thickness of the intermediate layer 7 is not particularly limited, but is preferably 8 to 90 μm, more preferably 10 to 50 μm, and still more preferably 11 to 45 μm. The total thickness of the intermediate layer 7 is the thickness of the resin layer when the intermediate layer 7 is composed of one resin layer, and when the intermediate layer 7 is composed of two or more resin layers. Is the total thickness of those resin layers.
When the intermediate layer 7 is composed of two or more resin layers, the thickness of each resin layer is not particularly limited, but is, for example, 0.5 μm to 40 μm, and preferably 1 μm to 20 μm. Note that these resin layers may have the same or a part of the thickness, or may be different from each other.

The ratio of the thickness of the surface layer 5 to the total thickness of the intermediate layer 7 (thickness of the surface layer 5: total thickness of the intermediate layer 7) is not particularly limited, but is preferably 5: 1 to 1:20, more preferably 1: It is 1-1: 10, More preferably, it is 1: 2-1: 8. The ratio of the thickness of the back layer 6 and the total thickness of the intermediate layer 7 is also the same as the ratio of the thickness of the surface layer 5 and the total thickness of the intermediate layer 7.
Each thickness of the surface layer 5 and the back surface layer 6 with respect to the thickness of the heat-shrinkable base material 2 (the total thickness of the surface layer 5, the back surface layer 6 and the intermediate layer 7) is not particularly limited. It is 2% to 35%, preferably 3% to 25%, more preferably 5% to 20%.
The thickness of the elastomer layer relative to the thickness of the heat-shrinkable substrate 2 (the total thickness of the front surface layer 5, the back surface layer 6 and the intermediate layer 7) (the total thickness when a plurality of the elastomer layers are provided) is particularly limited. Although not performed, for example, it is 5% to 75%, preferably 10% to 65%, and more preferably 20 to 60%.

The heat-shrinkable substrate 2 is a substrate having a property (heat-shrinkability) that at least heat-shrinks in the lateral direction (main heat-shrink direction) when heated to a desired temperature (for example, 70 to 100 ° C.). Moreover, the heat-shrinkable base material 2 may be slightly heat-shrinked or stretched in the vertical direction (the vertical direction is the direction perpendicular to the horizontal direction in the film plane). The heat shrinkage rate of the heat-shrinkable substrate 2 is not particularly limited as long as it can be adhered to the container. For example, the heat shrinkage rate in the lateral direction when heated to 90 ° C. is 40% or more, preferably Is 45% or more, more preferably 50% or more. By providing the intermediate layer 7 with an elastomer layer, the heat-shrinkable substrate 2 having a heat shrinkage rate of 50% or more can be formed as described above.
In addition, when the heat-shrinkable base material 2 is slightly heat-shrinked or stretched in the vertical direction, the heat-shrink rate in the vertical direction when heated to 90 ° C. is, for example, −5% to 15%, preferably Is -3% to 10%. The minus of the thermal contraction rate means thermal extension. The heat shrinkage rate when heated to 90 ° C. is the length of the base material before heating (original length) and the length of the base material after dipping the base material in warm water at 90 ° C. for 10 seconds ( It is a ratio of the length after immersion) and is obtained by substituting into the following formula.
Formula: heat shrinkage rate (%) = [{(original length in horizontal direction (or vertical direction)) − (length after immersion in horizontal direction (or vertical direction))} / (horizontal direction (or vertical direction) ) Original length)] × 100.

The heat-shrinkable substrate can be produced by, for example, a melt film forming method.
Specifically, the surface layer forming material, the intermediate layer forming material and the back layer forming material are melted and coextruded to form an unstretched laminated film, and then stretched by stretching the unstretched laminated film. A laminated film is produced. In addition, extrusion temperature is suitably set according to the kind of forming material (raw material) of each layer. The stretching direction of the unstretched laminated film is not particularly limited, but is preferably stretched at least in the MD direction. Examples of the stretching in at least the MD direction include uniaxial stretching that stretches in the MD direction of the unstretched laminated film, and biaxial stretching that stretches in the MD direction and the TD direction of the unstretched laminated film. The MD direction is the direction of the film production line and the longitudinal direction of the stretched laminated film to be produced. The TD direction is a direction orthogonal to the MD direction and is a short direction of the stretched laminated film to be produced. As the stretching method, any method such as a roll method, a tenter method, and a tube method may be used. The stretching conditions are appropriately set according to the type of forming material of each layer, the required characteristics of the heat-shrinkable substrate, and the like. For example, at a stretching temperature of 70 to 110 ° C., preferably 80 to 95 ° C., at least in the MD direction. It is preferable to carry out at a draw ratio of about 2 to 8 times.
By stretching the unstretched laminated film, a stretched laminated film in which the surface layer, the intermediate layer, and the back surface layer are laminated is obtained. This stretched laminated film has heat shrinkability that mainly heat shrinks in the MD direction, and the surface layer, intermediate layer, and back layer constituting the stretched laminated film also have heat shrinkability that mainly heat shrinks in the MD direction, respectively. .
The obtained stretched laminated film has a long shape, and the heat-shrinkable substrate of the present invention can be obtained by cutting it into a desired size. In addition, by cutting the stretched laminated film so that the MD direction of the stretched laminated film becomes the transverse direction of the heat-shrinkable substrate, a heat-shrinkable substrate having a property of being thermally contracted at least in the transverse direction is obtained. Can do.

The tear strength in the transverse direction of the heat-shrinkable substrate 2 is preferably 0.5 N / mm to 65 N / mm, more preferably 1 N / mm to 25 N / mm, and still more preferably 1.5 N / mm. mm to 15 N / mm. The tear strength in the longitudinal direction of the heat-shrinkable substrate 2 is preferably 0.5 N / mm to 65 N / mm, more preferably 1 N / mm to 25 N / mm, and still more preferably 1.5 N / mm. mm to 15 N / mm. Thus, the heat-shrinkable base material 2 having an elastomer layer as the intermediate layer 7 is either in the horizontal direction (main heat-shrink direction) or in the vertical direction (direction orthogonal to the horizontal direction in the plane of the heat-shrinkable base material 2). Also has a characteristic that the tear strength is relatively small.
The tear strength is a value measured according to JIS K7128-1 (trouser tear method, test speed: 200 mm / min).

<Olefin layer>
The olefin layer preferably constitutes the surface layer 5 and the back layer 6 of the heat-shrinkable substrate 2. When the intermediate layer 7 is composed of two or more resin layers, the olefin layer may constitute a part of the resin layer.
The olefin layer may contain a resin other than the main component resin on the condition that the main component resin contains a polyolefin resin. However, it should be noted that this polyolefin resin does not include an olefin elastomer described later.
When the surface layer 5 and the back surface layer 6 are composed of an olefin layer, the layers 5 and 6 may be different in composition, but the surface layer 5 and the back surface layer 6 are composed of the same olefin layer. It is preferable.

Examples of the polyolefin resin include cyclic olefin polymers and acyclic olefin polymers.
Examples of the cyclic olefin polymer include a copolymer of an α olefin such as ethylene, propylene, 1-butene, 1-hexene, 4-methyl-1-pentene and at least one cyclic olefin (“cyclic olefin”). A ring-opening polymer of a cyclic olefin or a hydrogenated product thereof (sometimes referred to as “a ring-opening polymer of a cyclic olefin or a hydrogenated product thereof”). The cyclic olefin copolymer and the cyclic olefin ring-opening polymer or hydrogenated product thereof also include graft-modified products thereof.
Examples of the cyclic olefin used in the cyclic olefin polymer include, for example, bicyclo [2.2.1] hept-2-ene (norbornene), tetracyclo [4.4.0.12, 5.17,10]- 3-dodecene, hexacyclo [6.6.1.13, 6.110, 13.02, 7.09,14] -4-heptadecene, octacyclo [8.8.0.12, 9.14, 7.111 , 18.113, 16.03, 8.012, 17] -5-docosene, pentacyclo [6.6.1.13, 6.02, 7.09,14] -4-hexadecene, heptacyclo-5-icosene , Heptacyclo-5-henicocene, tricyclo [4.3.0.12,5] -3-decene, tricyclo [4.4.0.12,5] -3-undecene, pentacyclo [6.5.1.13 , .02, 7.09,13] -4-pentadecene, pentacyclopentadecadiene, pentacyclo [4.7.0.12,5.08,13.19,12] -3-pentadecene, nonacyclo [9.10] 1.14, 7.113, 20.115, 18.02, 10.12, 21.014, 19] -5-pentacocene and the like, and the like. Of these, norbornene is preferable. These cyclic olefins may have substituents such as ester groups such as methoxycarbonyl and ethoxycarbonyl groups, alkyl groups such as methyl groups, haloalkyl groups, cyano groups, and halogen atoms in the ring.

The cyclic olefin copolymer is, for example, a catalyst such as a so-called Ziegler catalyst or a metallocene catalyst in a hydrocarbon solvent such as hexane, heptane, octane, cyclohexane, benzene, toluene, xylene, and the like. It can obtain by superposing | polymerizing using. Such cyclic olefin copolymers are commercially available, and for example, “Apel” manufactured by Mitsui Chemicals, Inc., “TOPAS” manufactured by Polyplastics Co., Ltd., and the like can be used.
The ring-opening polymer of the cyclic olefin or the hydrogenated product thereof is usually obtained by subjecting one or more of the cyclic olefins to metathesis polymerization (ring-opening polymerization) using a molybdenum compound or a tungsten compound as a catalyst. The polymer obtained can be further hydrogenated. Such ring-opened polymers of cyclic olefins or hydrogenated products thereof are commercially available. For example, “Arton” manufactured by JSR Corporation, “Zeonex” manufactured by Nippon Zeon Co., Ltd., “Zeonor”, and the like can be used.
Although it does not specifically limit as a cyclic olefin type polymer, A cyclic olefin copolymer is more preferable. Since the cyclic olefin copolymer is highly miscible and compatible with the acyclic olefin polymer, the cyclic olefin layer containing the cyclic olefin copolymer and the acyclic olefin polymer is used as the surface layer 5 and the back surface. By setting it as the layer 6, the heat-shrinkable base material 2 excellent in transparency, impact resistance, and heat-shrinkability can be constituted.

The glass transition temperature (Tg) of the cyclic olefin polymer is not particularly limited, but is preferably 30 to 180 ° C, more preferably 50 to 80 ° C, and still more preferably 60 to 80 ° C, from the viewpoint of stretchability. Preferably it is 65-75 degreeC (especially about 70 degreeC). The glass transition temperature of the cyclic olefin polymer can be adjusted by the type of monomer component (for example, cyclic olefin) and the blending ratio thereof.
When the cyclic olefin-based polymer is a cyclic olefin copolymer, the content of the structural unit derived from the cyclic olefin (for example, norbornene) in the cyclic olefin copolymer is not particularly limited. From a viewpoint, 50 to 75 mass% is preferable with respect to the total mass (100 mass%) of a cyclic olefin copolymer, More preferably, it is 60 to 70 mass%. For example, when the cyclic olefin copolymer contains norbornene, the norbornene content in the cyclic olefin copolymer (Norbornene content in COC) is preferably in the above range.

  The acyclic olefin polymer is a polymer composed of an acyclic olefin as an essential monomer component, that is, a polymer containing at least an acyclic olefin in a molecule (in one molecule). is there. The acyclic olefin is not particularly limited, and examples thereof include ethylene, propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene and 1-nonene. And α-olefins such as 1-decene.

Examples of the acyclic olefin polymer include a polymer (α olefin resin) composed of at least one α-olefin as a main component of a monomer. Examples of the α-olefin resin include a polymer containing ethylene as a main component of a monomer (polyethylene resin) and a polymer containing propylene as a main component of a monomer (polypropylene resin). The acyclic olefin polymer is not particularly limited, but a polyethylene resin or a polypropylene resin is preferable, and a polyethylene resin is more preferable.
The polyethylene resin is a polymer composed of ethylene as a main component of a monomer. Examples of the polyethylene-based resin include ethylene homopolymers; copolymers composed of ethylene and one or more monomer components (monomer components other than ethylene) as the main monomer components (ethylene copolymer). Polymer) and the like.

  Examples of monomer components other than ethylene include α-olefins as described above (excluding ethylene); vinyl monomers such as vinyl chloride; (meth) acrylic acid, maleic acid, fumaric acid, crotonic acid, Unsaturated carboxylic acids such as itaconic acid, citraconic acid, 5-norbornene-2,3-dicarboxylic acid; maleic anhydride, citraconic anhydride, 5-norbornene-2,3-dicarboxylic anhydride, tetrahydrophthalic anhydride, etc. Unsaturated carboxylic anhydride; methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, (meth) acrylic acid 2- Hydroxyethyl, 3-hydroxypropyl (meth) acrylate, glycidyl (meth) acrylate, male Unsaturated carboxylic acid esters such as monoethyl acid and diethyl maleate; unsaturated amides or imides such as acrylamide, methacrylamide and maleimide; unsaturated carboxylic acid salts such as sodium (meth) acrylate and zinc (meth) acrylate; Examples include vinyl acetate. Only one type of monomer component other than ethylene may be used, or two or more types may be used.

Examples of the α olefin include α having 4 to 20 carbon atoms such as 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene and 1-decene. Olefins (preferably α-olefins having 4 to 8 carbon atoms) are preferred. Only 1 type may be used for the said alpha olefin, and 2 or more types may be used for it.
Examples of the ethylene copolymer include a copolymer composed of ethylene and one or more α-olefins as essential monomer components (ethylene-α-olefin copolymer); an ethylene-vinyl acetate copolymer. (EVA); ethylene-carboxylic acid copolymer such as ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA); ethylene-ethyl acrylate copolymer (EEA), And ethylene-carboxylic acid ester copolymers such as ethylene-methyl methacrylate copolymer (EMMA). Among these, an ethylene-α olefin copolymer is particularly preferable.

Examples of the polyethylene resin include low-density polyethylene (LDPE) and linear low-density polyethylene (LLDPE), and are not particularly limited, but LLDPE is particularly preferable from the viewpoint of heat shrinkability. The LDPE refers to polyethylene having a low density of about 0.850 to 0.945 g / cm ³ that includes a structural unit derived from ethylene as a main component and is manufactured by a high-pressure method. The LLDPE is a low-density polyethylene of about 0.850 to 0.945 g / cm ³ that contains a structural unit derived from ethylene as a main component, is produced by a medium / low pressure method, and has a short chain branch.
The polyethylene resin is not particularly limited, but a polyethylene resin obtained by polymerization using a metallocene catalyst, particularly a linear low density polyethylene (LLDPE) obtained by polymerization using a metallocene catalyst is preferable. . As the metallocene catalyst, a known or conventional metallocene catalyst for olefin polymerization can be used. The polymerization method (copolymerization method) of the polyethylene resin is not particularly limited, and examples thereof include known polymerization methods such as a slurry method, a solution polymerization method, and a gas phase method.

Although the density of the said polyethylene-type resin is not specifically limited, 0.850-0.950 g / cm < ³ > is preferable, More preferably, it is 0.870-0.935 g / cm < ³ >. Further, the melt flow rate (MFR) (temperature 190 ° C., load 2.16 kg) of the polyethylene resin is not particularly limited, but is preferably 1 to 30 g / 10 minutes from the viewpoint of melt extrusion suitability and productivity, Preferably it is 1-10 g / 10min.
Commercially available products may be used as the polyethylene resin. For example, “Umerit 4540F”, “Umerit 3540F”, “Umerit 2540F”, “Umerit 1540F”, “Umerit 0540F”, “Umerit 5540F”, “ "Umerit 2040FC", "Umerit 0520F", "Umerit 1520F", "Umerit 0520F", "Umerit 715FT", made by Prime Polymer Co., Ltd., "Evolue SP1520", "Evolue SP2040" (and above, metallocene catalyst LLDPE), Japan “Kernel KF260T”, “Kernel KF360T”, “Kernel KF380”, “Kernel KS340T” (the above, metallocene catalyst ethylene / α-olefin copolymer) manufactured by Polyethylene Co., Ltd., Ube Good polyethylene (Ltd.) "F234" (LDPE), Ube Maruzen Polyethylene Co., Ltd. "V206", Japan polyethylene Co., Ltd. "Novatec EVA Series" (or more, EVA) is and available in the market.

  When the olefin layer contains a resin other than a polyolefin resin, the resin is not particularly limited. For example, a polyester resin, a polystyrene resin, a vinyl chloride resin, a polycarbonate resin, a polyamide resin, a thermoplastic elastomer ( Examples thereof include olefin elastomers, styrene elastomers, polyester elastomers, and the like.

  The content of the main component resin of the olefin layer (the content of the polyolefin resin) is not particularly limited, but is preferably 50% by mass or more, more preferably 50% by mass with respect to the total mass (100% by mass). It is more preferably 60% by mass or more, particularly preferably 80% by mass or more, and most preferably 90% by mass or more. The upper limit of the content is not particularly limited, and may be 100% by mass.

  When the cyclic olefin layer contains a resin other than the cyclic olefin polymer, the resin is not particularly limited. For example, the polyester resin, the polystyrene resin, the acyclic olefin polymer, the vinyl chloride resin. Polycarbonate resin, polyamide resin, thermoplastic elastomer (for example, olefin elastomer, styrene elastomer, polyester elastomer, etc.). Preferably, the cyclic olefin layer includes a cyclic olefin polymer as a main component, and further includes an acyclic olefin polymer.

  The content of the cyclic olefin polymer in the cyclic olefin layer is not particularly limited on the condition that the cyclic olefin polymer is a main component, but with respect to the total mass (100% by mass) of the cyclic olefin layer, 50 mass% or more is preferable, More preferably, it exceeds 50 mass%, More preferably, it is 60 mass% or more, Especially preferably, it is 70 mass% or more, Most preferably, it is 80 mass% or more. The upper limit of the content is not particularly limited, and may be 100% by mass.

  Each of the olefin layer and the cyclic olefin layer may independently contain various additives within a range not impairing the effects of the present invention. Examples of additives include pigments, dyes, lubricants, fillers, antiblocking agents (such as inorganic particles), antioxidants, ultraviolet absorbers, deodorants, flame retardants, antistatic agents, antifogging agents, and pinning agents. (Alkaline earth metal), heat stabilizers and the like. The addition amount of these additives is preferably less than 3% by mass with respect to the total mass of the olefin layer or the cyclic olefin layer.

The olefin layer (or cyclic olefin layer) constituting the front surface layer 5 and the back surface layer 6 contains 70% by mass to 90% by mass of the cyclic olefin polymer and 10% by mass to 30% by mass of the polyethylene resin. Is preferred.
On the other hand, the olefin layer constituting the resin layer of the intermediate layer preferably contains a polyolefin resin as a main component and also contains an olefin elastomer, preferably contains a cyclic olefin polymer as a main component and contains an olefin elastomer and an acyclic material. More preferably, it contains an olefin polymer, and more preferably contains a cyclic olefin polymer as a main component and also contains an olefin elastomer, a polyethylene resin and a polypropylene resin.

<Elastomer layer>
The elastomer layer constitutes all or part of the intermediate layer 7. The elastomer layer may contain a resin other than the main component resin on the condition that the main component resin contains an olefin elastomer. When the elastomer layer contains a resin other than the olefin-based elastomer, the resin is not particularly limited. For example, a cyclic olefin-based polymer, a polyester-based resin, a polystyrene-based resin, an acyclic olefin-based polymer, or a vinyl chloride-based resin. Examples thereof include thermoplastic elastomers other than resins, polycarbonate resins, polyamide resins, and olefin elastomers. Preferably, the resin other than the main component resin contained in the elastomer layer is a cyclic olefin polymer and an acyclic olefin polymer. In addition, as a cyclic olefin type polymer and an acyclic olefin type polymer of an elastomer layer, what was illustrated in the said olefin layer can be used. Preferably, the cyclic olefin polymer of the elastomer layer is the same as the cyclic olefin polymer constituting the olefin layer constituting the front surface layer and the back surface layer. Preferably, the acyclic olefin polymer of the elastomer layer is the same as the acyclic olefin polymer that may be blended in the olefin layer.

Examples of the olefin elastomer include an ethylene elastomer having ethylene as a main component and a propylene elastomer having propylene as a main component. Examples of the ethylene-based elastomer include ethylene-α olefin copolymer elastomers such as ethylene-propylene copolymer elastomers (however, α-olefins in ethylene-α-olefin copolymer elastomers are α-olefins other than ethylene). It is done. Examples of the propylene-based elastomer include propylene-α olefin copolymer elastomers such as propylene-ethylene copolymer elastomer (provided that the α olefin of the propylene-α olefin copolymer elastomer is an α olefin excluding propylene). It is done. Among these, a propylene-based elastomer is preferable, a propylene-α olefin copolymer elastomer is more preferable, and a propylene-α olefin graft copolymer elastomer or a propylene-α olefin random copolymer elastomer is further preferable. Only 1 type may be used for the said polyolefin-type elastomer, and 2 or more types may be used for it.
The propylene-α olefin copolymer elastomer, propylene-α olefin graft copolymer elastomer or propylene-α olefin random copolymer elastomer is a propylene-ethylene copolymer elastomer, propylene-ethylene graft copolymer elastomer or propylene- An ethylene random copolymer elastomer is preferred. These copolymer elastomers may contain α-olefins other than ethylene and propylene as necessary. In addition, these copolymer elastomers may contain a diene component as necessary. Examples of the diene component include 1,3-butadiene, isoprene (2-methyl-1,3-butadiene), 2,3-dimethyl-1,3-butadiene, 1,3-pentadiene, and 1,3-hexadiene. And chloroprene. The diene component may be used alone or in combination of two or more.

Examples of the α-olefin used as a copolymerization component of the ethylene-α-olefin copolymer elastomer include propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1 -C3-C20 alpha olefins (preferably C3-C8 alpha olefins), such as octene, 1-nonene, 1-decene, etc. are mentioned. Only 1 type may be used for the said alpha olefin, and 2 or more types may be used for it. The ethylene-α olefin copolymer elastomer may be a block copolymer, a random copolymer, or a graft copolymer.
Content of structural unit derived from α-olefin in the ethylene-α-olefin copolymer elastomer (100% by mass), that is, all monomer components constituting the ethylene-α-olefin copolymer elastomer (100% by mass) The content of the α-olefin in () is not particularly limited, but is preferably 1 to 40% by mass, more preferably 2 to 30% by mass, and still more preferably 3 to 25% by mass. Furthermore, in the said ethylene-alpha olefin copolymer elastomer, although total content of an ethylene component and an alpha olefin component is not specifically limited, In ethylene-alpha olefin copolymer elastomer (100 mass%), it is 90 mass% or more. Preferably, it is 95% by mass or more, and more preferably 98% by mass or more.

Examples of the α-olefin used as a copolymerization component of the propylene-α-olefin copolymer elastomer include ethylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1 -C2-C20 alpha olefins (however, except propylene), such as octene, 1-nonene, 1-decene, etc. are mentioned. Only 1 type may be used for the said alpha olefin, and 2 or more types may be used for it. The propylene-α olefin copolymer elastomer may be a block copolymer, a random copolymer, or a graft copolymer. Among these, a random copolymer is preferable.
Although content of the alpha olefin in all the monomer components (100 mass%) which comprises the said propylene-alpha olefin copolymer elastomer is not specifically limited, 1-40 mass% is preferable, More preferably, it is 2-30. It is 3 mass%, More preferably, it is 3-25 mass%. In the propylene-α-olefin copolymer elastomer, the total content of the propylene component and the α-olefin component is not particularly limited, but is 90% by mass or more in the propylene-α-olefin copolymer elastomer (100% by mass). Is preferable, 95 mass% or more is more preferable, and 98 mass% or more is further more preferable.
The content of ethylene in the propylene-ethylene copolymer elastomer is preferably 5% by mass to 30% by mass, more preferably 6% by mass to 25% by mass, further preferably 7% by mass to 20% by mass, and 8% by mass. % To 12% by mass is particularly preferable. When the propylene-ethylene copolymer elastomer contains an α-olefin other than ethylene and propylene, the content is, for example, 15% or less, preferably 10% or less. Moreover, when a propylene-ethylene copolymer elastomer contains a diene component, the content is 15% or less, for example, Preferably it is 10% or less.

  The polypropylene elastomer preferably has a heat of fusion (Hf) of 75 J / g or less. This heat of fusion can be lowered by incorporating a monomer component other than propylene such as a stereo error, regio error, and α-olefin and diene. When the polypropylene elastomer is a propylene-α-olefin copolymer elastomer, the heat of fusion of the propylene-α-olefin copolymer elastomer is preferably 0.5 to 50 J / g. The heat of fusion can be measured according to ASTM E-794-95 (version E-794-01).

The polypropylene elastomer preferably has a triad tacticity (triad tacticity) composed of three propylene units of 75% or more (preferably 90% or more). The triplet stereoregularity can be obtained by using ¹³ C-NMR measurement. Specifically, for example, it can be calculated by the method described in US Patent Application Publication No. 2004/0236042.

In particular, the polypropylene elastomer preferably has a heat of fusion of 75 J / g or less and a triplet stereoregularity composed of three propylene units of 75% or more.
Wherein the polypropylene-based elastomer (particularly, propylene -α- olefin copolymer elastomer), the Mooney viscosity _{ML (1 + 4)} at 125 ° C., is not particularly limited, preferably less than 100, more preferably below 60, more preferably 30 Is less than. The Mooney viscosity can be measured according to ASTM D1646.
The molecular weight distribution (Mw / Mn) of the polypropylene-based elastomer (particularly, propylene-α-olefin copolymer elastomer) is not particularly limited, but is preferably 1.8 to 3. The molecular weight distribution can be measured using GPC.

  A known or conventional polypropylene elastomer can be used as the polypropylene elastomer. The polypropylene-based elastomer includes a bridged metallocene catalyst (see, for example, International Publication No. 1999/007788), a pyridine amine catalyst (see, for example, International Publication No. 2003/040201), and a non-bridged metallocene catalyst (see, for example, US Pat. It can be prepared preferably by solution polymerization using various types of single-site catalysts such as No. 5969070).

Density of the polypropylene-based elastomer is not particularly limited, but is preferably 0.800 g / cm ³ or more, more preferably 0.830 g / cm ³ or more, more preferably 0.840 g / cm ³ or more, particularly preferably 0. It is 850 g / cm ³ or more. The upper limit of the density is not particularly limited, but is preferably 0.950 g / cm ³ or less, more preferably less than 0.900 g / cm ³ , still more preferably less than 0.895 g / cm ³ , and particularly preferably 0.890 g / cm ^3. Less than cm ³ , most preferably 0.885 g / cm ³ or less.

  Commercially available products may be used as the propylene-α-olefin copolymer elastomer, such as “Tough Selenium Series” manufactured by Sumitomo Chemical Co., Ltd., “VISTAMAX Series” manufactured by ExxonMobil Chemical Co., Ltd., The Dow Chemical.・ The company's “VERSIFY series” is available on the market.

The content of the olefin-based elastomer in the elastomer layer is not particularly limited as a condition that the olefin-based elastomer is a main component, but is preferably 30% by mass or more, more preferably based on the total mass (100% by mass) of the elastomer layer. Is 40% by mass or more, more preferably 50% by mass or more, particularly preferably 60% by mass or more, and most preferably 80% by mass or more. The upper limit of the content is not particularly limited, and may be 100% by mass.
The elastomer layer may contain various additives within a range not impairing the effects of the present invention. Examples of the additive include those described above. The addition amount of the additive is preferably less than 5% by mass with respect to the total mass of the elastomer layer.

(A) The intermediate layer 7 is composed of one resin layer (elastomer layer) or the intermediate layer 7 is composed of two or more resin layers, and two or more of the resin layers are the same elastomer When composed of layers, the content of the olefinic elastomer in the elastomer layer is preferably 80% by mass or more, more preferably 90% by mass or more, with respect to the total mass (100% by mass) of the elastomer layer. Yes, more preferably 100% by mass. By using the elastomer layer containing a relatively large amount of the olefin-based elastomer as the intermediate layer 7, the heat-shrinkable substrate 2 having excellent water vapor barrier properties and excellent heat-shrinkability can be configured.

  In the case of (a), (a-1) an elastomer layer containing an olefin elastomer as a main component and containing a cyclic olefin polymer, or (a-2) containing an olefin elastomer as a main component and acyclic An elastomer layer containing an olefin polymer is preferred, and (a-3) an elastomer layer containing an olefin elastomer as a main component and containing a cyclic olefin polymer and an acyclic olefin polymer is more preferred. The content of the olefin elastomer in the elastomer layer (a-1) or (a-3) is, for example, 40% by mass to 90% by mass, preferably 50% by mass to 85% by mass, and more preferably. Is 55% by mass to 80% by mass, and the content of the cyclic olefin polymer is, for example, 5% by mass to 49% by mass, preferably 10% by mass to 45% by mass, and more preferably 15% by mass. % To 40% by mass. The content of the olefin elastomer in the elastomer layer (a-2) or (a-3) is, for example, 40% by mass to 90% by mass, preferably 50% by mass to 85% by mass, and more preferably. Is 55% by mass to 80% by mass, and the content of the acyclic olefin polymer is, for example, 1% by mass to 40% by mass, and preferably 3% by mass to 35% by mass. As the acyclic olefin polymer, a polyethylene resin or a polypropylene resin is preferably used.

(B) When the intermediate layer 7 includes the first elastomer layer and the second elastomer layer, the content of the olefin-based elastomer in the first elastomer layer is the total mass (100% by mass) of the first elastomer layer. Is preferably 80% by mass or more, more preferably 90% by mass or more, still more preferably 100% by mass, and the content of the olefin-based elastomer in the second elastomer layer is that of the first elastomer layer. On the condition that it is smaller than that, the total mass (100% by mass) of the second elastomer layer is preferably 40% by mass or more, more preferably 45% by mass or more, and further preferably 50% by mass. That's it.
Preferably, the first elastomer layer includes only an olefinic elastomer as a main component resin, and more preferably, the first elastomer layer is composed of only an olefinic elastomer.

  Preferably, the second elastomer layer contains (b-1) an olefin elastomer as a main component and an elastomer layer containing a cyclic olefin polymer, or (b-2) an olefin elastomer as a main component, and An elastomer layer containing an acyclic olefin polymer is preferred, and (b-3) an elastomer layer containing an olefin elastomer as a main component and containing a cyclic olefin polymer and an acyclic olefin polymer is more preferred. The content of the olefin elastomer in the elastomer layer (b-1) or (b-3) is, for example, 40% by mass to 90% by mass, preferably 50% by mass to 85% by mass, and more preferably. Is 55% by mass to 80% by mass, and the content of the cyclic olefin polymer is, for example, 5% by mass to 49% by mass, preferably 10% by mass to 45% by mass, and more preferably 15% by mass. % To 40% by mass. The content of the olefin elastomer in the elastomer layer (b-2) or (b-3) is, for example, 40% by mass to 90% by mass, preferably 50% by mass to 85% by mass, and more preferably. Is 55% by mass to 80% by mass, and the content of the acyclic olefin polymer is, for example, 1% by mass to 40% by mass, and preferably 3% by mass to 35% by mass. As the acyclic olefin polymer, a polyethylene resin or a polypropylene resin is preferably used.

<Other resin layers>
Other resin layers include, for example, a resin layer containing a polyester resin as a main component resin, a resin layer containing a polystyrene resin as a main component resin, a resin layer containing a vinyl chloride resin as a main component resin, and a polycarbonate resin. Resin layer containing component resin, resin layer containing polyamide resin as main component resin, resin layer containing acrylic resin as main component resin, resin layer containing urethane resin as main component resin, thermoplastics other than olefin elastomer Examples thereof include a resin layer containing an elastomer as a main component resin.

<Split auxiliary line>
In the surface of the heat-shrinkable substrate 2, dividing auxiliary lines 25 and 26 are formed.
The dividing auxiliary lines 25 and 26 are not particularly limited as long as the heat-shrinkable base material 2 can be easily divided along the lines. For example, perforation lines, half-cut lines, and the like can be used. These can be used alone or in combination.
Here, in the present specification, the perforation line refers to a set of through holes in which a plurality of through holes penetrating the front and back surfaces of the heat-shrinkable base material 2 are formed at predetermined intervals like a sewing mark of a sewing needle. It is. Such a perforation line has a non-penetrating part (a film part not subjected to a penetrating process) between adjacent through holes. 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 heat-shrinkable base material 2 is easily cut along the perforation line, the perforation hole of the perforation line is preferably an elongated straight line. Moreover, a half cut line is a line in which the notch part cut in the substantially V shape in the thickness direction of the base material 2 (it does not penetrate the front and back surfaces of the base material 2) continues.
From the viewpoint that the heat-shrinkable label 1 attached to the container can be easily cut along the auxiliary cutting line, the auxiliary cutting lines 25 and 26 are preferably perforated lines. On the other hand, from the viewpoint that the heat-shrinkable label 1 having particularly excellent water vapor barrier properties can be constructed, the auxiliary cutting lines 25 and 26 are half-cut lines (because they do not penetrate the front and back surfaces of the base material). Is preferred.
In the example of illustration, the case where the perforation line is formed in the heat-shrinkable base material 2 as an auxiliary line for cutting is illustrated.

There are no particular restrictions on the formation positions and number of the dividing auxiliary lines 25 and 26.
For example, the dividing auxiliary line may be formed so as to extend in the horizontal direction of the heat-shrinkable base material 2, may be formed so as to extend in the vertical direction, or may extend in a direction inclined with respect to the vertical direction. It may be formed. The fact that the dividing auxiliary line extends in the horizontal direction or in the vertical direction is not limited to the case where the dividing auxiliary line is strictly parallel to the horizontal direction or the vertical direction, but is allowed in the technical field to which the present invention belongs. Error range. For example, extending in the horizontal direction or extending in the vertical direction means within a range of ± 10 degrees parallel in a strict sense, and preferably within a range of ± 5 degrees.

Preferably, the dividing auxiliary line extends in the horizontal direction of the heat-shrinkable base material 2, the vertical auxiliary line extending in the vertical direction of the heat-shrinkable base material 2, and the vertical direction of the heat-shrinkable base material 2. And at least one of oblique auxiliary lines extending in a direction inclined with respect to the horizontal direction, and more preferably, with respect to the horizontal auxiliary line extending in the horizontal direction of the heat-shrinkable base material 2 and the vertical direction of the heat-shrinkable base material 2 And at least a diagonal auxiliary line extending in an inclined direction. In addition, since it has a diagonal auxiliary line as a dividing auxiliary line, even when it is illegally opened, a cut line is generated in an oblique direction, so that it can be easily found.
The horizontal auxiliary line, the vertical auxiliary line, and the diagonal auxiliary line may be independent from each other, but the vertical auxiliary line or the diagonal auxiliary line is preferably connected to the horizontal auxiliary line. More preferably, the diagonal auxiliary line is connected to the horizontal auxiliary line at the end thereof.

In the illustrated example, the heat-shrinkable base material 2 is formed with a horizontal auxiliary line 25 extending in the horizontal direction in the middle part in the vertical direction and a diagonal auxiliary line 26 extending in a direction inclined with respect to the vertical direction. . The inclination angle of the oblique auxiliary line 26 with respect to the vertical direction is not particularly limited, and is, for example, 15 degrees to 75 degrees.
In the illustrated example, the case where a perforation line is formed on the heat-shrinkable substrate 2 as the auxiliary auxiliary line for cutting is illustrated as a horizontal auxiliary line, and the oblique auxiliary line is referred to as an oblique perforated line.
The horizontal perforation line 25 extends in the horizontal direction of the heat-shrinkable base material 2. The formation position of the horizontal perforation line 25 is not particularly limited. Usually, the heat-shrinkable label 1 is attached to the container so that the horizontal perforation line 25 coincides with the boundary portion between the container main body and the cap portion or in the vicinity thereof. Therefore, the formation position of the horizontal perforation line 25 is appropriately designed according to the type of container. But the heat-shrinkable label 1 of this invention is not necessarily limited to the packaging form with which the horizontal perforation line 25 is mounted | worn so that it may correspond to the boundary part of a container main body and a cap part, or its vicinity part.
The oblique perforation line 26 is an upper end portion of the heat-shrinkable base material 2 and starts from the left base portion of the knob 29 and extends from the start point to a part of the horizontal perforation line 25 with a downward slope. That is, the end portion of the oblique perforation line 26 is connected to the middle portion of the horizontal perforation line. Further, the diagonal perforation line 26 extends with a gentle curve as a whole.
Although not particularly illustrated, a vertical perforation line (vertical auxiliary line) extending in the vertical direction may be formed on the heat-shrinkable base material 2 instead of or in combination with the oblique perforation line.

The length of the through hole and the length of the non-penetrating portion of the perforation line (lateral perforation line, oblique perforation line, and vertical perforation line) are not particularly limited. Since it becomes easy to cut along the perforation line, the length of the through hole of the perforation line is preferably 0.01 mm to 8 mm, more preferably 0.1 mm to 5 mm, and still more preferably 0.5 mm to 4.5 mm. In addition, the length of the non-penetrating portion between adjacent through holes of the perforation line is preferably 0.1 mm to 5 mm, more preferably 0.2 mm to 3 mm, and further preferably 0.3 mm to 2 mm.
However, the length of the through hole is one other edge (any one point among the edges of the through hole) from the other edge (any other point except the one edge among the edges of the through hole). ) Is the maximum length of straight lines up to. The length of the non-penetrating portion is the two adjacent through holes, and is the minimum length among the linear lengths from one edge of one through hole to the other edge of the other through hole. .

<Adhesive layer>
The pressure-sensitive adhesive layer 3 is composed of a pressure-sensitive adhesive applied to the back surface of the heat-shrinkable substrate 2. A conventionally well-known thing can be used as said adhesive, for example, a pressure sensitive adhesive, a heat sensitive adhesive, etc. are mentioned. Examples of the pressure-sensitive adhesive include synthetic rubbers such as styrene-isoprene-styrene block copolymers and styrene-butadiene-styrene block copolymers, acrylic resins, olefin resins, urethane resins, and ethylene-vinyl acetate copolymers. An adhesive such as a polymer can be used. Since the pressure-sensitive adhesive has a desired adhesive force even at room temperature, it is preferable to use a pressure-sensitive adhesive.
A portion where the back surface of the pressure-sensitive adhesive layer 3 is exposed is an adhesive portion 31 that can be attached to the container.
In FIG. 7, in order to illustrate the bonding portion 31 in an easy-to-understand manner, the portion is shaded.

The bonding portion 31 is, for example, of the entire lower region of the heat-shrinkable substrate 2 that does not include the horizontal perforation line 25, the right end portion of the heat-shrinkable substrate 2, and the left end portion of the heat-shrinkable substrate 2 It is provided in a part above the horizontal perforation line 25.
The formation method of the adhesion part 31 is not specifically limited, (1) Applying an adhesive only to the range which provides an adhesion part among the back surfaces of the heat-shrinkable base material 2, (2) Heat-shrinkable base material 2 After the pressure-sensitive adhesive is applied to the entire back surface to form the pressure-sensitive adhesive layer 3, a masking agent that conceals the pressure-sensitive adhesive force of the pressure-sensitive adhesive is applied to the back surface of the pressure-sensitive adhesive layer 3 other than the range where the adhesive portion is provided. And the masking layer 32 is formed. Examples of the masking agent include printing ink added with transparent medium ink, silicone resin, wax and the like. Examples of the masking agent coating method include printing methods such as gravure printing and flexographic printing.
In the example of illustration, the adhesion part formed by the method of (2) is shown in figure.

<Design printing layer>
The design print layer 4 is a print layer on which various design displays such as a trade name, a pattern, a component display, and a cautionary note are displayed. The design printing layer 4 can be formed using a conventionally known printing ink. When the design print layer 4 is provided on the surface of the heat-shrinkable substrate 2, it is preferable to use an ultraviolet curable ink because a print layer having excellent friction resistance can be formed. The design printing layer 4 may be entirely or partially light transmissive, or may be entirely opaque.
The design print layer 4 is provided on the front surface or the back surface of the heat-shrinkable substrate 2 or the front and back surfaces. In the illustrated example, the design print layer 4 is provided on the surface of the heat-shrinkable substrate 2.

<Method for producing heat-shrinkable label>
Next, an example of the manufacturing method of the heat-shrinkable label 1 which has an adhesive layer is demonstrated.
The heat-shrinkable label 1 having an adhesive layer is usually manufactured in a state where a plurality of the heat-shrinkable labels 1 are temporarily stuck on a release paper and supplied to a user.
Such a heat-shrinkable label 1 can be manufactured by the following method, for example.
As shown to Fig.11 (a), the elongate strip-shaped base material fabric C laminated | stacked via the adhesive layer B on the mold release surface of the strip-shaped release paper A is prepared. In addition, the adhesive layer B is provided on the entire back surface of the base material C. The base material C is a stretched laminated film described in the method for producing a heat-shrinkable base material or a film obtained by cutting the stretched laminated film into a desired width and length. The main heat shrinkage direction is the longitudinal direction (MD direction of the stretched laminated film).
After this base material C is peeled off from the release surface of the release paper A and a masking agent is applied to a predetermined range (a range other than the range where the adhesive portion is provided) on the back surface of the pressure-sensitive adhesive layer B to form a masking layer The base material C is again laminated on the release surface of the release paper A. In addition, since the masking layer is not provided in part of the back surface of the adhesive layer 3, the base material web C can be temporarily attached to the release paper A again at that portion.

Next, as shown in FIG. 11 (b), only the base material C is formed at a predetermined interval in the longitudinal direction so as to form an oblique perforation line 26 (an oblique auxiliary line) and along the longitudinal direction. Thus, a horizontal perforation line 25 (lateral auxiliary line) is formed. Furthermore, a cut line D having the same shape as the outer shape of the heat-shrinkable base material 2 is formed only on the base material C. The perforation lines 26 and 27 and the cut line D may be formed first, or both may be formed simultaneously. It is preferable to form the perforation lines 25 and 26 and the cut line D at the same time because they can be formed with high accuracy.
Finally, as shown in FIG. 11 (c), the area C1 (unnecessary area) other than the area surrounded by the cut line in the base material C is peeled off from the release paper A and removed. As shown in 11 (d), a label continuum is obtained.
This label continuum has a long strip-shaped release paper A and a plurality of heat-shrinkable labels 1 temporarily attached to the release surface of the release paper A at predetermined intervals. The plurality of heat-shrinkable labels 1 are arranged such that the lateral direction (main heat-shrink direction) is substantially parallel to the longitudinal direction of the long strip-shaped release paper A, and the adhesive layer is provided on the back surface of the label 1. Thus, it is temporarily pasted on the release surface of the release paper A.

(Container with label)
The labeled container 10 of the present invention can be manufactured, for example, as follows.
The heat-shrinkable label 1 temporarily attached to the release paper A is peeled from the release paper A. While aligning the heat-shrinkable label 1 so that the horizontal perforation line 25 of the heat-shrinkable label 1 coincides with the boundary portion of the container body 91 and the cap portion 92 of the container 9 or the upper vicinity portion or the lower vicinity portion thereof, The left end portion of the heat-shrinkable label 1 is attached to the container main body 91 via an adhesive portion 31 provided on the back surface of the left-side end portion of the heat-shrinkable label 1. And, with the horizontal direction of the heat-shrinkable label 1 as the circumferential direction, the heat-shrinkable label 1 is wrapped around the container 9 and through the adhesive portion 31 provided on the back surface of the right end portion of the heat-shrinkable label 1, The right end portion of the heat-shrinkable label 1 is attached so as to overlap the surface of the left end portion.
Finally, by heating the entire heat-shrinkable label 1 to a predetermined temperature (for example, 80 ° C. to 100 ° C.), the heat-shrinkable label 1 is shrunk in the circumferential direction and the outer surfaces of the container main body 91 and the cap portion 92. The labeled container 10 as shown in FIGS. 1 to 4 is obtained.

In the labeled container 10, the heat-shrinkable label 1 wound around the container is in close contact with the entire outer periphery of the container main body 91 and the cap portion 92, and the upper portion 1 a (upper portion 1 a) of the heat-shrinkable label 1. Includes a knob piece 29) bent to the top surface side of the cap portion 92 and locked to the peripheral end portion of the top surface, and the lower portion 1b of the heat-shrinkable label 1 is connected to the container body 911. It bends to the bottom side and is locked to the peripheral end of the bottom surface. In addition, since the pressure-sensitive adhesive layer 3 is provided in the entire lower region of the heat-shrinkable label 1, the heat-shrinkable label 1 is attached to the entire body of the container body 91 with almost no gap.
Further, the horizontal perforation line 25 (lateral auxiliary line) of the heat-shrinkable label 1 has a heat-shrinkable group on the entire circumferential direction of the container 9 at the boundary portion between the container main body 91 and the cap portion 92, the portion near the boundary or the portion near the boundary. While extending in the circumferential direction of the material 2, an oblique perforation line 26 (an oblique auxiliary line) extends in an oblique direction with respect to the axial direction of the container 9.
In the case of opening the labeled container 10, the knob 29 is picked with a finger, the heat-shrinkable label 1 is cut using the oblique perforation line 26, and further cut in the circumferential direction along the horizontal perforation line 25. As a result, the upper region of the heat-shrinkable label 1 can be removed.

Conventional general heat-shrinkable substrates are basically easy to cut only in the transverse direction, which is the stretching direction, and difficult to cut in other directions (longitudinal direction and oblique direction).
In this respect, the heat-shrinkable substrate 2 of the heat-shrinkable label 1 according to the present invention has the intermediate layer 7 having the elastomer layer. Is easy to cut off and has excellent tearability. When the heat-shrinkable label 1 is cut along the oblique perforation line 26 (or the vertical perforation line), the cut line does not easily deviate from the oblique perforation line 26. Therefore, the oblique perforation line 26 and the horizontal perforation line 25 are used. Thus, the upper region of the heat-shrinkable label 1 can be easily removed. In particular, since the oblique perforation line 26 (or the vertical perforation line) is connected to the horizontal perforation line 25, the cut line smoothly advances from the oblique perforation line 26 to the horizontal perforation line 25. In addition, even if a person who opens tampering does not start cutting from the oblique perforation line 26 but tries to cut only the horizontal perforation line 25, the oblique perforation line 26 is connected to the horizontal perforation line 25 and the heat-shrinkable substrate 2 is described above. Since the tearing property is excellent as described above, a cut line is generated not only in the horizontal perforation line 25 but also in the oblique perforation line 26. Therefore, it is easy to detect unauthorized opening.

Moreover, since the elastomer layer is excellent in water vapor barrier property and heat shrinkability, the heat-shrinkable substrate 2 having it in the intermediate layer 7 is excellent in water vapor barrier property and heat shrinkage rate. For this reason, by attaching the heat-shrinkable label 1 of the present invention to the container, it is possible to prevent moisture intrusion into the contents or moisture release from the contents. Furthermore, since it is excellent in heat shrinkability, when the heat shrinkable label 1 is attached to the container, the upper and lower parts of the heat shrinkable label 1 are sufficiently bent to the top and bottom surfaces of the container, and the heat shrinkable label. Thus, the labeled container 10 in which the upper end and the lower end of 1 are in close contact with the top and bottom surfaces of the container can be obtained.
Furthermore, when the front surface layer 5 and the back surface layer 6 are composed of an olefin layer, the heat-shrinkable base material 2 having the olefin layers on the front and back surfaces is strong, and therefore, the work of attaching the heat-shrinkable label 1 to the container Can be performed without hindrance.

<Modification of First Embodiment>
Although the heat-shrinkable label 1 of the said embodiment is flat form containing the flexible heat-shrinkable base material 2, Comprising: Although it wound around a container and illustrated the case where the label was formed in a cylinder shape, this invention The heat-shrinkable label 1 may be formed in a cylindrical shape in advance.
For example, as shown in FIG. 12, the heat-shrinkable label 1 is obtained by rolling the heat-shrinkable base material 2 so that the lateral direction is the circumferential direction, and the first side end 2 a and the second side of the heat-shrinkable base material 2. It may be formed in a cylindrical shape by overlapping the side end portion 2b and adhering all or part of the overlapping surface using a solvent or an adhesive.
As the base material of the heat-shrinkable label 1 formed in a cylindrical shape in advance, it is preferable to use a heat-shrinkable base material 2 that is different from the first embodiment and is not provided with an adhesive layer.
In addition, in FIG. 12, the case where the heat-shrinkable base material 2 provided with the horizontal auxiliary line 25 (horizontal perforation line) and the plurality of vertical auxiliary lines 27 (vertical perforation line) is formed in a cylindrical shape is illustrated. Yes.
The heat-shrinkable label 1 formed in a cylindrical shape in this way can be attached to the container by heat-shrinking in the circumferential direction by heating after being externally fitted at a desired position of the container.

The present invention is not limited to the first embodiment, and can be changed as appropriate within the scope of the present invention.
Hereinafter, the second embodiment and the like will be described. In the description, configurations and effects different from those of the first embodiment will be mainly described, and configurations similar to those of the first embodiment will be described. In some cases, the term or reference is used as it is, and the description of the configuration is omitted.

[Second Embodiment]
2nd Embodiment is related with the heat-shrinkable label in which the auxiliary wire for a division | segmentation extended at least to the horizontal direction (circumferential direction when it mounts | wears with a container) is formed.
In FIG. 13, the heat-shrinkable label 1 has a heat-shrinkable base material 2 having a substantially rectangular shape in plan view, and a lateral auxiliary line 25 formed in the plane of the heat-shrinkable base material 2. In the illustrated example, a perforation line is used as the horizontal auxiliary line 25.
The adhesive layer 3 is provided on the back surface of the heat-shrinkable substrate 2 in the same manner as in the above-described embodiment, and the adhesive portion 31 where the back surface of the adhesive layer 3 is exposed is provided. In FIG. 13, in order to show the bonding portion 31 in an easy-to-understand manner, the portion is shaded.
The adhesive portion 13 is provided on the entire upper region and the entire lower region of the heat-shrinkable substrate 2 excluding the belt-shaped region having a desired width from the horizontal perforation line 25 and the right end portion of the heat-shrinkable substrate 2.

The heat-shrinkable label 1 shown in FIG. 13 is attached to, for example, a prefilled syringe that is a kind of medical container. An example of a prefilled syringe is shown in FIG.
In FIG. 14, a container (prefilled syringe) includes a synthetic resin container main body 811 in which an injection needle mounting portion 814 serving as a drug outlet is formed, a cap portion 821 attached to the injection needle mounting portion 814, and a container main body. 811 includes a plunger plug portion 813 inserted into the rear opening of 811 and a medicine (not shown) sealed in the container body 811.
Specifically, the container body 811 is formed, for example, on a body portion having a substantially cylindrical outer shape, a front closing surface that closes a front opening portion of the body portion, the front closing surface, and inside the body portion. It has an injection needle mounting portion 814 formed of a small-diameter cylindrical portion that communicates, and a latching portion that protrudes outward from the periphery of the rear opening of the trunk portion.
The container body 811 is formed of a known synthetic resin molded product such as polyethylene, polypropylene, cyclic polyolefin, and polyethylene terephthalate.
A plunger plug portion 813 having a rubber plug portion is inserted into the container body 811.
A cap portion 821 made of a molded product such as rubber or synthetic resin such as butyl rubber is detachably attached to the injection needle mounting portion 814 of the container body 811. For example, the cap portion 821 is formed in a columnar shape having a smaller diameter than the body portion of the container main body 811 and is fitted to the middle portion of the injection needle mounting portion 814. In the container body 811, the medicine is filled and sealed from the plunger plug portion 813 to the cap portion 821.

One side end portion (for example, the left end portion) of the heat-shrinkable label 1 is attached to the container main body 811, and the container main body 811 is rotated while applying tension to the heat-shrinkable label 1. Wrap the sex label 1. Then, the heat-shrinkable label 1 is placed around the container body 811 and the cap portion 812 by superimposing the back surface of the right end portion on the surface of the left end portion and adhering via the adhesive portion (adhesive layer 3). Can be wound into a shape.
Finally, the heat-shrinkable label 1 is thermally shrunk in the circumferential direction of the container by passing it through a shrink tunnel or the like and heating it to a predetermined temperature (for example, about 80 to 120 ° C.), and the label as shown in FIG. The attached container 10 can be obtained.
Since the heat-shrinkable label 1 is not provided with the adhesive portion 31 in the upper and lower belt-like regions of the horizontal perforation line 25, as shown in FIG. 14B, the upper and lower belt-like regions including the horizontal perforation line 25 are around the container. It is non-adhered to the container over the entire direction.
Such a labeled container 10 has a heat shrinkable label 1 by holding the cap part 821 by hand and turning the cap part 821 in the circumferential direction of the container as shown by the arrow in FIG. The in-plane of the label 1 is twisted, and the heat-shrinkable label 1 is divided at the horizontal perforation line 25 and can be opened.
In addition, since the said heat-shrinkable label 1 is mounted | worn with the said container 10 with a label from the trunk | drum of the container main body 811 to the cap part 812 of the container main body 811, it is excellent in the water vapor | steam barrier property with respect to a container.

[Third Embodiment]
In the third embodiment, in cooperation with the edge of the heat-shrinkable substrate or the score line formed in the heat-shrinkable substrate, or with the auxiliary line alone, it surrounds a part of the region of the heat-shrinkable substrate. The present invention relates to a heat-shrinkable label having an auxiliary line formed.
In FIG. 15A, the heat-shrinkable label 1 of the first example of the present embodiment includes a heat-shrinkable base material 2 having a substantially rectangular shape in plan view and a split formed in the surface of the heat-shrinkable base material 2. And an auxiliary line. The auxiliary line for cutting includes a horizontal auxiliary line 25 extending in the lateral direction of the heat-shrinkable base material 2 and an auxiliary line 28 (hereinafter referred to as a surrounding auxiliary line) surrounding a part of the heat-shrinkable base material 2. Have. In the illustrated example, perforation lines are used as the horizontal auxiliary line and the go auxiliary line.
The go perforation line 28 (go auxiliary line) is formed so as to surround a part of the region X of the heat-shrinkable substrate 2 in cooperation with the edge 211 of the heat-shrinkable substrate 2. Specifically, the go perforation line 28 has, for example, one point of the edge 211 of the heat-shrinkable base material 2 as a starting point 211a and extends in the vertical direction (or may be a direction inclined with respect to the vertical direction), It is reversed halfway and formed up to one point (end point 211b) of the edge 211 different from the start point. In the surface of the heat-shrinkable base material 2, a region X surrounded by the surrounding perforation line 28 and a part of the edge 211 of the heat-shrinkable base material 2 is formed. An edge portion sandwiched between the start point 211a and the end point 211b becomes a knob for picking up the partial region X.

  On the back surface of the heat-shrinkable base material 2, as in the second embodiment, the adhesive portion 31 is located above and below the entire upper region of the heat-shrinkable base material 2 except for the belt-like region having a desired width from the horizontal perforation line 25. The entire region and the right end of the heat-shrinkable substrate 2 are provided. In addition, the adhesive portion 31 is also provided on a part or the whole of the back surface of the partial region X of the heat-shrinkable base material 2 surrounded by the go perforation line 28 (go auxiliary line). Although the adhesion part 31 may be provided in the whole of the partial region X, as shown in the illustrated example, the adhesion part 31 except for the region to be the knob and the vicinity thereof on the back surface of the partial region X. Is preferably provided. By providing the adhesion part 31 in this manner, the knob part does not adhere to the container, so that the knob part can be easily picked from the labeled container. But in this embodiment, the area | region which provides the adhesion part 31 is not necessarily limited to this. In FIG. 15A, in order to show the bonding portion 31 in an easy-to-understand manner, the portion is shaded (the same applies to FIGS. 15B, 15C, and 15D).

In the first example of the present embodiment, the edge 211 of the heat-shrinkable base material 2 and the perforated perforated line 28 (going auxiliary line) cooperate to form a partial region X of the heat-shrinkable base material 2. 15B, for example, as shown in FIG. 15B, the edge 211 of the heat-shrinkable base material 2, the cut line 29 formed in the heat-shrinkable base material 2, and the perforation line 28 (go They may be formed so as to surround a part of the region X of the heat-shrinkable substrate 2 in cooperation with the auxiliary line).
The heat-shrinkable label 1 of the second example is different from the first example in that a cut line 29 is formed so as to overlap a part of the perforation line 28 (go auxiliary line) of the first example. This is the same as in the first example.
The cut line 29 may be linear in a plan view, but is preferably a non-linear shape in a plan view, and more preferably a non-linear shape that swells on the opposite side to the edge 211. In the illustrated example, the cut line 29 is formed in a substantially U-shape in plan view that swells on the opposite side to the edge 211. The portion partitioned by the cut line 29 becomes a knob for picking up a part of the region X, and for the reason described in the first example, the bonding portion 31 is provided in the region serving as the knob and in the vicinity thereof. Preferably not.

Further, as in the third example shown in FIG. 15C, the cut line 29 formed on the heat-shrinkable base material 2 and the go perforation line 28 (go auxiliary line) cooperate to form a heat-shrinkable base material. They may be formed so as to surround some of the two regions X.
In the heat-shrinkable label 1 of the third example, a pair of the perforation line 28 (going auxiliary line) that does not reach the edge 211 of the heat-shrinkable base material 2 and the cut lines 29 face each other in the vertical direction. Unlike the second example, the remaining points are the same as in the second example.

Further, as in the fourth example shown in FIG. 15 (d), the go perforation line 28 (go auxiliary line) formed in the plane of the heat-shrinkable substrate 2 is a part of the heat-shrinkable substrate 2. It may be formed so as to surround the region X.
In the heat-shrinkable label 1 of the fourth example, the go perforation line 28 (go auxiliary line) does not reach the edge 211 of the heat-shrinkable base material 2, and the go perforation line 28 has, for example, a substantially rectangular shape in plan view. Unlike the first example in that it is formed in an annular shape in plan view, the remaining points are the same as in the first example. In addition, in order to form a knob for picking up a part of the region X, the adhesive portion 31 is not provided in a part of the region surrounded by the surrounding perforation line 28.

The heat-shrinkable label 1 of this embodiment is attached to, for example, an ampoule that is a kind of medical container.
The ampule is a container that does not have a cap portion, and as shown in FIG. 16, the trunk portion 821 that constitutes the container main body, the head portion 822, and the twisted portion that is a connecting portion of the trunk portion 821 and the head portion 822. 823, and the body part 821, the curl part 823, and the head part 822 are integrally formed.
For example, one side end portion (for example, the left end portion) of the heat-shrinkable label 1 shown in FIG. 15B is attached to the body portion 821, and the body portion 821 is applied while applying tension to the heat-shrinkable label 1. Is rotated to wind the heat-shrinkable label 1 around the body portion 821. Then, the back surface of the right end is superposed on the surface of the left end, and is bonded via an adhesive portion (adhesive layer 3), whereby the heat-shrinkable label 1 is placed around the trunk portion 821 and the head portion 822. Can be wound into a shape.
Finally, this is passed through a shrink tunnel or the like and heated to a predetermined temperature (for example, about 80 to 120 ° C.), whereby the heat-shrinkable label 1 is thermally shrunk in the circumferential direction of the container, as shown in FIG. Such a labeled container 10 can be obtained.
Since the heat-shrinkable label 1 is not provided with the adhesive portion 31 in the upper and lower belt-like regions of the horizontal perforation line 25, the upper and lower belt-like regions including the horizontal perforation line 25 are not adhered to the container over the entire circumferential direction of the container. Become.

In the labeled container 10, when the head 822 is tilted, as shown in FIG. 16 (b), the ampoule is cracked by the squeezed portion 823 and the heat-shrinkable base material 2 is pulled in the vertical direction. The heat-shrinkable label 1 is separated at the perforation line 25 and can be opened.
The heat-shrinkable label 1 of the present embodiment is provided with the go perforation line 28 (go-auxiliary line). Therefore, a partial region X of the heat-shrinkable base material 2 is cut out using the go perforation line 28. be able to. The cut base piece X (partial region of the heat-shrinkable base material 2) can be used by sticking it to a medical chart or the like.
Since the heat-shrinkable label 1 of the present invention is easily cut along the go perforation line 28 (go-auxiliary line), the substrate piece X is separated from the heat-shrinkable label 1 without difficulty regardless of the user's dexterity. it can. For this reason, it is possible to prevent the base piece X from being partially interrupted and the display provided on the base piece X from being determined.

[Fourth Embodiment]
In the heat-shrinkable label of each of the embodiments described above, the horizontal perforation line 25 (lateral auxiliary line) extends linearly in the horizontal direction of the heat-shrinkable base material 2, but for example, as shown in FIG. The dividing auxiliary line may have a horizontal perforation line 25 (horizontal auxiliary line) and a curved oblique perforation line 261 (diagonal auxiliary line) connected thereto.

[Fifth Embodiment]
Moreover, in each said embodiment, although the heat-shrinkable label which has the horizontal perforation line 25 (horizontal auxiliary line) as a parting auxiliary line was illustrated, for example, as shown in FIG. 18, the vertical perforation line 27 extended in a vertical direction The heat-shrinkable label 1 in which only (vertical auxiliary line) is formed may be used. In addition, although not particularly illustrated, a heat-shrinkable label in which only an oblique perforation line (oblique auxiliary line) extending in a direction inclined with respect to the vertical direction, or a vertical perforation line (vertical auxiliary line) and an oblique perforation line is formed. A heat-shrinkable label in which only (oblique auxiliary line) is formed may be used.

[Sixth Embodiment]
Further, in the heat-shrinkable label 1, short cuts or short perforations (collectively referred to as cuts) are formed in the heat-shrinkable base material 2 so as to cross or be connected to the auxiliary cutting lines. May be.
For example, as shown in FIG. 19 (a), a plurality of cuts 291 extending in the vertical direction (or a direction inclined with respect to the vertical direction) intersecting a part of the horizontal perforation line 25 (transverse dividing line) may be provided. It may be formed.
Further, as shown in FIG. 19B, a notch 292 extending in the vertical direction and a notch 293 extending in a direction inclined with respect to the vertical direction are provided continuously to a part of the horizontal perforation line 25 (horizontal dividing line). It may be formed.
Such a labeled container having the heat-shrinkable label 1 having the cuts 291, 292 and 293 is illegal because the heat-shrinkable substrate 2 is cut randomly at the portions of the cuts 291, 292 and 293 when opened. When opened, it can be easily found.

1 Heat-shrinkable label 2 Heat-shrinkable substrate 25, 26, 27, 28 Auxiliary line for cutting (perforation line)
DESCRIPTION OF SYMBOLS 3 Adhesive layer 5 Front surface layer 6 Back surface layer 7, 71, 72, 73, 74, 75 Intermediate layer 9 Container 91 Container main body 92 Cap part 10 Labeled container

Claims (10)

A container having a container body and a cap part;
A heat-shrinkable label mounted in the circumferential direction of the container across the container body and the cap part, and a labeled container,
The heat-shrinkable base material, wherein the heat-shrinkable label has a surface layer, a back surface layer, and an intermediate layer having a resin layer provided between the surface layer and the back surface layer and containing an olefin-based elastomer as a main component resin When,
A container with a label, comprising: a dividing auxiliary line formed in a plane of the heat-shrinkable substrate.   The labeled container according to claim 1, wherein the olefin-based elastomer includes a polypropylene-based elastomer.   The labeled container according to claim 1 or 2, wherein the front surface layer and the back surface layer are composed of a resin layer containing a polyolefin-based resin as a main component resin.   The labeled container according to claim 3, wherein the polyolefin resin contains a cyclic olefin polymer.   The dividing auxiliary line includes a horizontal auxiliary line extending in the circumferential direction of the container, and at least one of a vertical auxiliary line extending in the axial direction of the container and an oblique auxiliary line extending in a direction inclined with respect to the axial direction of the container. A labeled container according to any one of claims 1 to 4. The dividing auxiliary line is a perforation line,
The length of the through hole of the perforation line is 0.01 mm to 8 mm, and the length of the non-penetrating portion between adjacent through holes is 0.1 mm to 5 mm. The labeled container according to one item.   The dividing auxiliary line surrounds a partial region of the heat-shrinkable base material in cooperation with an edge of the heat-shrinkable base material or a cut line formed in the heat-shrinkable base material or alone. The labeled container according to any one of claims 1 to 6, further comprising an auxiliary line formed on the container.   The labeled container as described in any one of Claims 1 thru | or 7 with which the adhesive layer is provided in the back surface of the said heat-shrinkable base material. A heat-shrinkable substrate having a surface layer, a back layer, and an intermediate layer having a resin layer provided between the surface layer and the back layer and containing an olefinic elastomer as a main component resin;
A heat-shrinkable label comprising: a dividing auxiliary line formed in a plane of the heat-shrinkable substrate.   10. The dividing auxiliary line includes a horizontal auxiliary line extending in the horizontal direction, and at least one of a vertical auxiliary line extending in the vertical direction and a diagonal auxiliary line extending in a direction inclined with respect to the vertical direction. Heat shrinkable label.

Images