JP2010054865A - Shrink label and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable hologram embossing to be formed on a heat-shrinkable resin substrate layer, to prevent deterioration of the hologram effect even after shrinking, and to enable image inspection of pattern printing without being affected by hologram embossing. A shrink label and a manufacturing method thereof are provided.
SOLUTION: After image printing is performed on one surface of a polystyrene-based heat-shrinkable resin substrate layer 2, image inspection is performed, and then the heat-shrinkable resin on the surface opposite to the surface on which the pattern printing is performed. The transparent deposition layer 7 is formed on the base material layer, and then the hologram emboss A is formed.
[Selection] Figure 1

Description

  The present invention relates to a shrink label that winds and shrinks on various articles such as PET containers and glass bottle containers in the beverage field, the seasoning field, the toiletry field, and the like, and a manufacturing method thereof.

2. Description of the Related Art Conventionally, a shrink label is known as a label that is attached to the body of a container such as a PET bottle or a glass bottle for various beverages.
Usually, this shrink label is manufactured using a heat-shrinkable resin such as polyvinyl chloride or polyester as a base material. After the sheet is formed into a cylinder, various articles are placed in the cylinder of the shrink label, and then the shrink label is formed. The label is densely wound around the outer periphery of the article by shrinking by heating at a shrink temperature (for example, 70 ° C. to 90 ° C.) corresponding to the heat-shrinkable resin constituting the label.
Various types of printing have been applied to such shrink labels, but shrink labels with a decorative effect using holograms have been proposed for the purpose of further enhancing the design (for example, Patent Documents 1 and 2). .
JP-A-9-76396 JP 2003-177672-A

  By the way, in order to form the embossed shape for hologram on the resin base material layer for label, generally, a thermosetting hologram forming resin layer is laminated on the resin base material layer for label and at a temperature close to 200 ° C. It is necessary to press the holographic mold and perform embossing processing.

  However, in the shrink label, the heat-shrinkable resin base material layer constituting the shrink label is shrunk by heat (for example, 200 ° C.) that hardens the hologram forming resin layer, so that the hologram emboss is formed on the shrink label by the above method. It was difficult to do.

  On the other hand, separately from the heat-shrinkable resin base layer, an emboss shape for hologram is formed in advance on the hologram-forming resin layer, and then the hologram-forming resin layer and the heat-shrinkable resin base layer are bonded together. Therefore, the method of obtaining the shrink label having the hologram embossed shape has a problem that the process becomes complicated.

  In addition, when a pattern printing is performed on the heat-shrinkable resin base material layer on which the hologram embossing shape has been formed earlier, and the image inspection of the pattern is performed, the image inspection machine misrecognizes the hologram embossing shape as a pattern. Therefore, there is a problem that all the patterns are detected as abnormal.

  In addition, when an aluminum vapor deposition layer is formed as a reflective layer on the heat-shrinkable resin base layer in order to enhance the hologram effect, there is a problem that the vapor deposition layer is cracked by a subsequent shrink process, and the vapor deposition layer is whitened. There was a problem.

  Furthermore, when a transparent vapor deposition layer is formed in order to increase the luminance of the hologram effect after processing the embossed shape for hologram, the adhesion of the vapor deposition layer is poor, and the vapor deposition layer peels off during the subsequent shrink process. There was a problem.

  The present invention has been made in view of the above circumstances, and has a heat-shrinkable resin base material layer having an embossed shape for hologram, enabling image inspection of a pattern after pattern printing, and a deposited layer even after a shrink process. An object of the present invention is to provide a shrink label that can maintain a hologram effect without peeling off and a manufacturing method thereof.

As a result of examining the shrink label in detail, the present inventor,
(1) For example, if a polystyrene-based heat-shrinkable resin base material layer is used, the temperature is lower than the shrink temperature (eg, 90 ° C to 100 ° C) of the heat-shrinkable resin base material layer (eg, 70 ° C to 80 ° C). It is possible to form an embossed shape for hologram directly on the heat-shrinkable resin base material layer by a technique of pressing a mold for hologram molding,
(2) After image printing on the heat-shrinkable resin base material layer and before image formation of the hologram embossed shape, it is formed by printing without being affected by the hologram embossed shape. Image inspection of
(3) By forming a transparent vapor deposition layer instead of an aluminum vapor deposition layer, cracking of the vapor deposition layer and whitening can be prevented,
(4) By forming the embossed shape for hologram after forming the transparent vapor deposition layer on the heat-shrinkable resin base material layer, the transparent vapor deposition layer is prevented from peeling off in the subsequent shrink process, and as a result, the hologram effect To solve the problem of reduced brightness in
(5) By providing a white ink layer at a predetermined position, when the shrink label is attached around the article, the original hue of the pattern printing layer is reproduced without being affected by the color of the article. It is preferable because a clear pattern can be observed.
(6) Furthermore, by providing a white ink layer at the innermost peripheral position of the shrink label, the white ink layer acts as a protective layer for the pattern printing layer, and slipping between the shrink label and the article The present invention has been completed by finding that it works for improvement.

  That is, the invention according to claim 1 of the present invention is a shrink label that is wound around and shrunk around various articles, from the outer peripheral side, the pattern printed layer, and the thermal contraction having an embossed shape for hologram on the inner peripheral side. The shrinkable label is characterized in that a transparent vapor-deposited layer is sequentially laminated in a thin film shape following the embossed shape of the heat-shrinkable resin base material layer and the heat-shrinkable resin base material layer.

  The invention according to claim 2 of the present invention is the shrink label according to claim 1, wherein a white ink layer is provided between the pattern printing layer and the heat-shrinkable resin base material layer. This is a shrink label.

Moreover, the invention according to claim 3 of the present invention is a shrink label that is wound and contracted around various articles, from the inner periphery side to the pattern printing layer, and the heat contraction having an emboss shape for hologram on the outer periphery side surface. A conductive resin base layer;
It is a shrink label characterized by the transparent vapor deposition layer being laminated | stacked sequentially in the thin film shape which follows this embossed shape of the said heat-shrinkable resin base material layer.

  The invention according to claim 4 of the present invention is the shrink label according to claim 3, wherein a white ink layer is provided on the pattern print layer as the innermost peripheral position of the shrink label. This is a shrink label.

  The invention according to claim 5 of the present invention is the shrink label according to any one of claims 1 to 4, wherein the heat-shrinkable resin substrate layer is a stretched polystyrene film. This is a shrink label.

  The invention according to claim 6 of the present invention is a method for manufacturing a shrink label that is wound around and shrunk around various articles, and the pattern printing is performed on one side of the heat-shrinkable resin substrate layer. After forming a transparent vapor deposition layer on the heat-shrinkable resin base material layer on the surface opposite to the applied surface, the heat-shrinkability on the surface of the heat-shrinkable resin base material layer provided with the transparent vapor deposition layer It is a manufacturing method of a shrink label characterized by forming an emboss shape for holograms by applying hot pressure at a temperature lower than the shrink temperature of a resin base material layer.

  The invention according to claim 7 of the present invention is the method for producing a shrink label according to claim 6, wherein the heat-shrinkable resin base material layer is a stretched polystyrene film, It is a manufacturing method of a shrink label.

  The invention according to claim 8 of the present invention is a method for inspecting a pattern formed by printing on a shrink label wound around and shrunk around various articles, wherein the pattern is formed on one side of the heat-shrinkable resin base material layer. A pattern formed by printing after printing and before forming an embossed shape for hologram on the surface of the heat-shrinkable resin substrate layer opposite to the surface on which the pattern is printed A method for inspecting a shrink label, wherein the image inspection is performed.

  According to the present invention, the hologram embossed shape can be directly formed on the heat-shrinkable resin base material layer, the image printing can be inspected without being affected by the hologram embossed shape, and the shrink process. It is possible to provide a shrink label that can maintain the effect of the hologram even after passing through. Thereby, the high design which cannot be expressed only by pattern printing can be brought to a shrink label. In addition, by providing a white ink layer at a predetermined position, it is possible to reproduce the clear hue of pattern printing, improve the protection of the pattern printing layer, and further improve the slipperiness with the article around which the shrink label is wound A label can be provided.

In particular,
(1) According to the present invention, for example, since a stretched polystyrene film is used for the heat-shrinkable resin base material layer, lamination of a thermosetting hologram-forming resin layer is unnecessary, and heat is directly applied at a temperature lower than the shrink temperature. The embossing for hologram can be formed on the shrinkable resin substrate layer.
(2) Further, according to the present invention, before the hologram embossed shape is formed on the heat-shrinkable resin base material layer, the image printed on the heat-shrinkable resin base material layer is image-inspected. The image inspection of the pattern can be performed without being influenced by the shape.
(3) Moreover, according to this invention, since a transparent vapor deposition layer is formed instead of an aluminum vapor deposition layer, it becomes possible to prevent the vapor deposition layer from cracking and whitening.
(4) Moreover, according to this invention, in order to form the emboss shape for holograms, after forming a transparent vapor deposition layer in a heat-shrinkable resin base material layer, this transparent vapor deposition layer peels and drops | drops off at a subsequent shrink process. As a result, it is possible to maintain the brightness of the hologram effect.
(5) Further, according to the present invention, by providing the white ink layer at a predetermined position, when the shrink label is attached around the article, the pattern printing layer is not affected by the color of the article. Can be reproduced, and as a result, a preferable result that a clear picture can be observed is obtained.
(6) Further, according to the present invention, by providing the white ink layer at the innermost peripheral position of the shrink label, the effect of improving the protection of the pattern printing layer, and the slip between the shrink label and the article The effect that property improves is acquired.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Shrink label]
FIG. 1 is a partial cross-sectional view showing an embodiment of the shrink label of the present invention. In FIG. 1, the shrink label 1 of the present invention is partially provided with a white ink layer 4 and a pattern printing layer 5 on the surface of a heat-shrinkable resin substrate layer 2, and the white ink layer 4 and the pattern printing layer 5. An OP varnish 6 is formed so as to cover the surface of the heat shrinkable resin substrate layer 2 and a hologram emboss A is provided on the back surface of the heat-shrinkable resin base material layer 2 so that the primer layer 3 follows the shape of the hologram emboss A. A transparent vapor deposition layer 7 is formed, and an inner varnish 8 is formed so as to cover the transparent vapor deposition layer 7.

  FIG. 2 is a partial cross-sectional view showing another embodiment of the shrink label of the present invention. In FIG. 2, the shrink label 9 of the present invention is provided with a hologram emboss B on the surface of the heat-shrinkable resin substrate layer 10, and a primer layer 11 and a transparent vapor deposition so as to follow the shape of the hologram emboss B. A layer 14 is formed, and an OP varnish 15 is formed so as to cover the transparent vapor-deposited layer 14, and a back surface of the heat-shrinkable resin substrate layer 10 is provided with a pattern printing layer 12, A white ink layer 13 is formed so as to cover the pattern printing layer 12.

  The heat-shrinkable resin base material layers 2 and 10 constituting the shrink labels 1 and 9 serve not only as a shrink base material but also as a printing base material and a hologram forming base material. Such heat-shrinkable resin base layers 2 and 10 can be realized by, for example, a stretched polystyrene film.

  The white ink layers 4 and 13 are used as a base layer for concealing the surrounding color of the printed article 5 and 12 by concealing the color around the article when the shrink label is wound around and attached to various articles. In the state where the shrink labels 1 and 9 are wound around various articles, the white ink layers 4 and 13 are arranged on the inner side, and the pattern printing layers 5 and 12 are arranged on the outer side. Here, the white ink layer 13 not only functions as a base layer of the pattern printing layer 12 but also functions as a protective layer of the pattern printing layer 12 and improves the slipping property between the back surface of the shrink label 9 and the article. To do. On the other hand, the white ink layer 4 is provided as necessary, and may be omitted entirely or in part when the pattern is made transparent.

  The pattern print layers 5 and 12 are made of inks used for various types of printing. For example, the pattern print layers 5 and 12 can be formed with ink used for gravure printing. Specifically, one or more ordinary ink vehicles are prepared from a resin and a solvent, and, if necessary, a plasticizer, a stabilizer, an antioxidant, a light stabilizer, an ultraviolet absorber, a curing agent. 1 to 2 or more kinds of auxiliaries such as additives, crosslinking agents, lubricants, antistatic agents, fillers, etc. are optionally added, and further colorants such as dyes and pigments are added, and solvents, diluents, etc. Ink compositions obtained by sufficiently kneading and adjusting can be used.

  In the above description, gravure printing has been described as an example, but other printing methods such as letterpress printing, screen printing, transfer printing, flexographic printing, and the like may be used. The printing may be back printing or front printing.

  The primer layers 3 and 11 act to improve the adhesion between the heat-shrinkable resin base material layers 2 and 10 and the transparent vapor-deposited layers 7 and 14, and a known transparent ink can be used as the material thereof. . For example, rosin, rosin ester, rosin modified resin, alkyd resin, phenolic resin, maleic acid resin, polystyrene resin, acrylic or methacrylic resin, polyamide resin, polyester resin, epoxy resin, urea resin, melamine resin, A combination of one or more aminoalkyd resins, nitrocellulose, ethylcellulose, etc., plasticizers, stabilizers, antioxidants, light stabilizers, curing agents, crosslinking agents, lubricants, fillers, One or two or more auxiliary agents such as silica can be optionally added, and an ink composition obtained by sufficiently kneading and adjusting with a solvent, a diluent or the like can be used. For the primer layer in the present invention, for example, polystyrene-based, acrylic-based, and nitrocellulose-based resins are preferable. The primer layers 3 and 11 are provided as necessary, and can be omitted depending on the adhesion between the heat-shrinkable resin base material layers 2 and 10 and the transparent vapor-deposited layers 7 and 14.

  The transparent vapor-deposited layers 7 and 14 act to improve the luminance of the hologram effect of the hologram embosses A and B, and the film thickness can be appropriately set within a range of about 10 to 200 nm, for example. As the material, for example, zinc sulfide, silica, alumina, and others can be used. In the present invention, it is desirable to use zinc sulfide because high luminance can be obtained.

  In the present invention, a primer layer is formed on the heat-shrinkable resin base material layers 2 and 10 as necessary, followed by forming a transparent vapor deposition layer, and then pressing a mold or the like at a temperature lower than the shrink temperature. Thus, since the embossed shape for the hologram is formed, the transparent vapor-deposited layers 7 and 14 are thin films that follow the shape of the embossed A and B for the hologram defined by the mold or the like.

  Here, as a technique for improving the luminance of the hologram effect, there is a technique using an aluminum vapor deposition layer instead of the transparent vapor deposition layer. However, when the aluminum vapor deposition layer is used, the vapor deposition surface is cracked and whitened in the process of winding the shrink label around the container and shrinking, and as a result, the hologram effect cannot be obtained.

  On the other hand, with the transparent vapor deposition layer of the present invention, the hologram effect could be maintained even after the shrink process.

The embosses A and B for hologram have a minute uneven shape, and cause the interference and diffraction of light to exert the hologram effect. For example, the height difference of the unevenness is 0.1 μm to 1 μm, and the pitch is 0. It can set suitably in the range of 1-2 micrometers. In the present invention, for example, a hologram molding die is pressed at a temperature of 80 ° C. and a pressure of 6 kg / cm ² to form hologram embosses on the heat-shrinkable resin base layers 2 and 10.

  Here, when the pattern printing layer is arranged on the front side of the container around which the shrink label is wound, the hologram embossed surface A is on the inner side (FIG. 1), and when the surface of the pattern printing layer is arranged on the inner side. The hologram embossed surface B is on the outside (FIG. 2).

  The OP varnish layer 6 is formed by coating so as to cover the white ink layer 4 and the pattern ink 5, and protects the pattern printing surface and further gives gloss.

  The inner varnish layer 8 and the OP varnish layer 15 are respectively formed so as to cover the surface on which the hologram embosses A and B are formed, and the surface on which the hologram embosses A and B are formed is protected and improved in slipperiness. It is provided for.

  For the inner varnish layer and OP varnish layer, one or more ordinary ink vehicles are prepared, and if necessary, a plasticizer, a stabilizer, an antioxidant, a light stabilizer, an ultraviolet absorber, a curing agent. An ink composition obtained by arbitrarily adding one or more of an agent, a crosslinking agent, a lubricant, an antistatic agent, a filler, and other auxiliary agents, and kneading sufficiently with a solvent, a diluent or the like is used. be able to.

  The OP varnish layers 6 and 15 and the inner varnish layer 8 can be omitted in the present invention. In this case, the protection of each surface is inferior, but the effect of shortening the process is obtained.

[Shrink label manufacturing method]
Next, the manufacturing method of the shrink label of this invention is demonstrated.
FIG. 3 is a process diagram for explaining the manufacturing method of the present invention using the shrink label shown in FIG. 1 as an example.

  First, a heat-shrinkable resin base material layer 2 made of a stretched polystyrene film is used as a base material (FIG. 3A), and a primer layer 3 made of a polystyrene-based resin is placed on the back surface of the heat-shrinkable resin base material layer 2. After coating and forming, the white ink layer 4 and the pattern printing layer 5 are formed on the surface of the heat-shrinkable resin substrate layer 2 by a technique such as gravure printing (FIG. 3B). Thereafter, an OP varnish layer 6 is applied and formed so as to cover the white ink layer 4 and the pattern printing layer 5 (FIG. 3C).

  Next, a transparent vapor deposition layer 7 made of zinc sulfide is formed on the primer layer 3 formed on the back surface of the heat-shrinkable resin substrate layer 2 by a vacuum vapor deposition method or the like (FIG. 3 (d)). A hologram mold is pressed from above the vapor deposition layer 7 to form hologram emboss A (FIG. 3E).

  Finally, the inner varnish layer 8 is applied and formed so as to cover the transparent vapor-deposited layer 7 processed into a shape following the shape of the hologram emboss A (FIG. 3F), and the shrink label 1 is obtained.

  FIG. 4 is a process diagram for explaining the manufacturing method of the present invention using the shrink label shown in FIG. 2 as an example.

  First, a heat-shrinkable resin base material layer 10 made of a stretched polystyrene-based film is used as a base material (FIG. 4A), and a primer layer 11 made of a polystyrene-based resin is formed on the surface of the heat-shrinkable resin base material layer 10. After coating and forming, the pattern printing layer 12 is formed on the back surface of the heat-shrinkable resin substrate layer 10 by a technique such as gravure printing (FIG. 4B). Thereafter, a white ink layer 13 is applied and formed so as to cover the pattern printing layer 12 (FIG. 4C).

  Next, a transparent vapor deposition layer 14 made of zinc sulfide is formed on the primer layer 11 formed on the surface of the heat-shrinkable resin base material layer 10 by a vacuum vapor deposition method or the like (FIG. 4D), and then this transparent A hologram molding die is pressed from above the vapor deposition layer 14 to form a hologram emboss B (FIG. 4E).

  Finally, an OP varnish layer 15 is applied and formed so as to cover the transparent vapor-deposited layer 14 processed into a shape following the shape of the emboss B for hologram (FIG. 4F), and the shrink label 2 is obtained.

  In addition, embodiment of the manufacturing method of the above-mentioned shrink label is an illustration, and this invention is not limited to these embodiment.

Next, the present invention will be described in more detail by showing specific examples.
[Example 1]
A stretched polystyrene film (DXL270-41S manufactured by Mitsubishi Plastics) is used as a heat-shrinkable resin base material layer, and a primer having a thickness of 0.1 μm is formed of a polystyrene-based resin on the back surface of the heat-shrinkable resin base material layer. A layer is formed, and then gravure printing is performed on the surface of the heat-shrinkable resin substrate layer using an acrylic gravure ink (OSM manufactured by Dainippon Seika Co., Ltd.) as an ink for forming a pattern printing layer. An OP varnish layer was applied and formed on the printed layer.

  At this stage, when the heat-shrinkable resin substrate layer after printing was subjected to a pattern inspection using an image inspection machine (EasyMax manufactured by FUTECH Co., Ltd.), the inspection could be performed satisfactorily. This is because at this stage, the heat-shrinkable resin base material layer has not yet been subjected to hologram processing, and therefore cannot be affected by the hologram embossing.

Next, on the surface (back surface) on which the primer layer of the heat-shrinkable resin base layer is formed, a transparent vapor deposition layer having a thickness of 50 nm is formed using zinc sulfide as a material, and a mold is used from above the transparent vapor deposition surface. The heat-shrinkable resin substrate layer is embossed for hologram (temperature 80 ° C., pressure 6 kg / cm ² , emboss depth 0.1 μm), and the inner varnish layer is applied on the surface on which the hologram emboss is formed. Formed.

  After that, slitting and perforation are performed by the conventional method, and the obtained shrink label is attached to a PET bottle in a cylinder, and the PET bottle is shrunk by passing it through a steam tunnel (manufactured by K & U System) at a temperature of 90 ° C. It was.

  The obtained shrink label is exposed to a temperature higher than the shrink temperature in addition to the shrink process because the hologram emboss is directly formed at a temperature lower than the shrink temperature on the heat-shrinkable resin substrate layer made of a stretched polystyrene film. There was nothing, and it shrank well in the said shrink process, and was wound around a PET bottle.

  In addition, the obtained shrink label is used to inspect the pattern printed by printing on the heat-shrinkable resin substrate layer before forming the hologram embossed shape on the heat-shrinkable resin substrate layer. The image could be inspected without being affected by the pattern, and it was a shrink label with no pattern defects.

  Moreover, since the obtained shrink label formed the transparent vapor deposition layer instead of the aluminum vapor deposition layer, the crack of the vapor deposition layer and the whitening phenomenon were not confirmed.

  Furthermore, since the obtained shrink label is subjected to hologram embossing after forming the transparent vapor deposition layer on the heat-shrinkable resin base material layer, the transparent vapor deposition layer is peeled off and dropped in the subsequent shrink process. It was not confirmed, and had a hologram effect with no decrease in luminance.

(Example 2)
In the same manner as in Example 1, a stretched polystyrene film (DXL270-41S manufactured by Mitsubishi Plastics) was used as a heat-shrinkable resin substrate layer, and pattern printing was performed. However, contrary to Example 1, since the pattern printing surface is an inner surface wound around various articles, the white ink layer is formed on the pattern printing layer.

  Thereafter, as in Example 1, the heat shrinkable resin base material layer was subjected to transparent vapor deposition on the surface opposite to the surface on which the pattern printing was performed, and hologram processing was performed on the transparent vapor deposition surface. An OP varnish layer was applied and formed on the processed surface.

  After that, slitting and perforation were performed in the same manner as in Example 1, and the obtained shrink label was attached to a PET bottle in a cylinder, and shrinkage was performed by passing it through a steam tunnel (manufactured by K & U System).

  The obtained shrink label is exposed to a temperature higher than the shrink temperature in addition to the shrink process because the hologram emboss is directly formed at a temperature lower than the shrink temperature on the heat-shrinkable resin substrate layer made of a stretched polystyrene film. There was nothing, and it shrunk well in the shrink process and wound around a PET bottle.

  In addition, since the obtained shrink label is subjected to image inspection of the pattern formed by printing on the heat-shrinkable resin base layer before forming the hologram embossed shape, the pattern of the pattern is not affected by the hologram embossed shape. It was a shrink label that could be image-inspected and had no pattern defects.

  Moreover, since the obtained shrink label formed the transparent vapor deposition layer instead of the aluminum vapor deposition layer, the crack of the vapor deposition layer and the whitening phenomenon were not confirmed.

  Furthermore, since the obtained shrink label is subjected to hologram processing after forming the transparent vapor deposition layer on the heat-shrinkable resin base material layer, it is not confirmed that the transparent vapor deposition layer is peeled off and dropped in the subsequent shrink process. It had a hologram effect with no decrease in luminance.

(Comparative Example 1)
Except for using polyvinyl chloride (soft) as the heat-shrinkable resin substrate layer, an attempt was made to produce a shrink label in the same manner as in Example 1. A desired hologram embossed shape could not be processed and formed at a temperature lower than the temperature (70 ° C. to 90 ° C.).

(Comparative Example 2)
The heat-shrinkable resin base layer is subjected to a process sequence in which a hologram embossing process is performed first, and then a gravure printing is performed on a surface opposite to the surface embossed with a hologram. Otherwise, a shrink label was prepared in the same manner as in Example 1.

  Even with this method, it was possible to perform gravure printing. However, when the pattern of the shrink label was inspected by an image inspection machine (EasyMax manufactured by HUTEC Co., Ltd.), the embossed shape for hologram was also mistaken for the pattern, and all the patterns were detected as abnormal. I tried to adjust the sensitivity, but no effect was obtained.

(Comparative Example 3)
A shrink label was prepared in the same manner as in Example 1 except that an aluminum vapor deposition layer was formed instead of the transparent vapor deposition layer on the heat-shrinkable resin base material layer. When this shrink label is affixed to a PET bottle, shrink is performed through a steam tunnel (manufactured by K & U System), and the appearance and surface state are confirmed. As a result, the shrink label is cracked and whitened. Is no longer seen.

(Comparative Example 4)
A shrink label is produced in the same manner as in Example 1 except that the embossed shape for hologram is first formed on the heat-shrinkable resin substrate layer and then a transparent vapor deposition is performed. did.

  When this shrink label is attached to a PET bottle and shrunk through a steam tunnel (manufactured by K & U System), and the appearance and surface state are confirmed, the vapor deposition layer peels off in this shrink label, and from the point of brightness. The hologram effect was inferior.

It is sectional drawing which shows an example of the shrink label of this invention. It is sectional drawing which shows the other example of the shrink label of this invention. It is sectional drawing explaining an example of the manufacturing method of the shrink label of this invention. It is sectional drawing explaining the other example of the manufacturing method of the shrink label of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,9 ... Shrink label 2,10 ... Heat-shrinkable resin base material layer 3,11 ... Primer layer 4,13 ... White ink layer 5,12 ... Picture printing layer 6,15 ... OP varnish layer 7, 14 ... Transparent vapor deposition layer 8 ... Inner varnish layer A, B ... Emboss for hologram

Claims (8)

In shrink labels that wrap around various articles and shrink,
From the outer peripheral side, the pattern printing layer,
A heat-shrinkable resin base material layer having an embossed shape for hologram on the inner peripheral surface;
A transparent vapor deposition layer in a thin film shape following the embossed shape of the heat-shrinkable resin substrate layer,
A shrink label characterized by being sequentially laminated.   The shrink label according to claim 1, wherein a white ink layer is provided between the pattern printing layer and the heat-shrinkable resin base material layer. In shrink labels that wrap around various articles and shrink,
From the inner circumference side, the pattern printing layer,
A heat-shrinkable resin substrate layer having an embossed shape for hologram on the outer peripheral surface;
A transparent vapor deposition layer in a thin film shape following the embossed shape of the heat-shrinkable resin substrate layer,
A shrink label characterized by being sequentially laminated.   The shrink label according to claim 3, wherein a white ink layer is provided on the pattern print layer as a position of the innermost circumference of the shrink label.   The shrink label according to any one of claims 1 to 4, wherein the heat-shrinkable resin substrate layer is a stretched polystyrene film. A shrink label manufacturing method for winding and shrinking around various articles,
Apply pattern printing on one side of the heat-shrinkable resin substrate layer,
After forming a transparent vapor deposition layer on the heat-shrinkable resin base material layer on the surface opposite to the surface subjected to the pattern printing,
On the surface provided with the transparent vapor deposition layer of the heat-shrinkable resin base material layer,
Applying hot pressure at a temperature lower than the shrink temperature of the heat-shrinkable resin substrate layer,
The manufacturing method of a shrink label characterized by forming the embossed shape for holograms.   The shrink label production method according to claim 6, wherein the heat-shrinkable resin substrate layer is a stretched polystyrene film. A method for inspecting a pattern formed by printing on a shrink label that winds and shrinks around various articles,
After printing the pattern on one side of the heat-shrinkable resin substrate layer,
On the surface of the heat-shrinkable resin substrate layer opposite to the surface on which the pattern is printed,
Before forming the embossed shape for the hologram,
A method for inspecting a shrink label, which comprises inspecting an image of a pattern formed by printing.

Images