JP6175423B2 - Manufacturing method of shielding label - Google Patents

Description

The present invention relates to a method of manufacturing a shielding label, in particular, display of the front and back surfaces is a technique suitable for use in visible label, respectively.

  Up to now, various food-related products such as plastic bottle drinks and glass bottle drinks, toiletry-related products such as shampoos and rinses, and various sales campaigns and sales promotion activities for quasi-drugs such as eye drops, As a label that can be attached to a transparent container, there is known a label in which different display information is given to both the front and back surfaces so that different information can be visually recognized from both the front and back surfaces.

  Such a label is printed on the front side with information about the product as label information, and on the back side is printed with various information about various product sales campaigns and sales promotion activities. It is used by adhering to a packaging container main body such as a commodity main body or a commodity case as an adherend through an adhesive (adhesive or pressure-sensitive adhesive) layer.

  In addition, at the stage where such a label is affixed to an opaque adherend, the information printed on the back side of the label cannot be confirmed visually, but when the label is peeled off from the adherend, Some of them are capable of visually reading various information on various sales campaigns and sales promotion activities printed on the back side.

  As such a label, transparent printing is performed on the surface of the transparent substrate, a transparent adhesive is provided on the back surface, and colored printing composed of dark white ink applied on the entire surface is performed on the transparent printing on the substrate surface. The surface of the label is printed on the surface of the cover, and the surface of the label is printed on the surface of the cover. The printed content on the back of the label is confirmed via the transparent substrate. What can be known is known (Patent Document 1).

Also known is a transparent substrate with transparent printing applied on the surface, a transparent adhesive on the back, and an opaque substrate with a top printed on the plate surface on the transparent printing (Patent Document). 2).
Moreover, it is known to use an aluminum vapor deposition film as a film with a shielding property (patent document 3).

Japanese Patent Laid-Open No. 08-227270 JP 2001-034170 A JP 2001-134190 A

  In recent years, the label as described above has been required to be thin enough not to cause a step at the boundary with the attached container.

  However, since the label of Patent Document 1 is only subjected to white or other shielding printing, there is a problem in that the printed content on the opposite side is transparent and visibility is lowered. In order to prevent this, if the shielding printing of white or the like is made thick, the thickness of the label increases, and a step formed at the boundary with the container to which the label is attached becomes conspicuous.

  The label of Patent Document 2 is originally premised on peeling, and does not avoid increasing the thickness in order to impart ease of peeling.

  Further, in the technique described in Patent Document 3, since the display information on the front and back surfaces is separated through the aluminum vapor deposition layer, the display information formed on the opposite surface is not seen through. The part of the shielding layer cannot be attached to a container or the like, and rather than avoiding the increase in thickness, it is welcomed as the strength increases.

The present invention has been made in view of the above circumstances, and intends to achieve the following object.
1. To reduce the label thickness while maintaining the shielding property in the label printed with different information on the front and back surfaces.
2. It is possible to reduce the thickness of the shielding layer.
3. Reduce manufacturing costs.

The method for producing a shielding label according to the present invention includes a transparent adhesive layer, a transparent layer, a first layer, a cold adhesive foil, a transparent layer, and a cold foil as a shielding layer in which different display information can be visually recognized on the front and back sides. 1 is a method for producing a shielding label in which a printing layer and an adhesive layer are laminated, and a second printing layer is laminated on the surface side of the cold foil,
Laminating the transparent adhesive layer, the transparent layer, the first printed layer, the adhesive layer, and the cold foil;
Laminating the second printed layer on the surface side of the cold foil;
And it has a,
The adhesive layer is an ultraviolet curing agent layer, and the above problem is solved by irradiating ultraviolet rays from the surface side of the cold foil .
In the present invention, the thickness of the cold foil can be set in a range of 5 to 15 μm.

The shielding label of the present invention is a shielding label in which the back side of the shielding layer that can visually recognize display information on the front and back sides can be adhered,
By laminating a transparent adhesive layer, a transparent layer, a first printed layer, an adhesive layer, a cold foil as the shielding layer, and a second printed layer from the back side, by making the cold foil a shielding layer, Without increasing the thickness dimension of the label, sufficient shielding properties can be provided, and the visibility of display information provided on both sides of the front and back surfaces can be prevented from being lowered.

  By setting the thickness of the cold foil of the present invention in the range of 5 to 15 μm, when the shielding label is attached to the object to be attached, the level difference is emphasized by the thickness of the label in the outline of the label. There is no end.

  Further, by providing a shielding printing layer on the front side surface of the cold foil, it is possible to improve the shielding efficiency and improve the visibility on both the front and back surfaces compared to the configuration of the cold foil alone. It becomes possible.

  In the present invention, a release layer is provided on the back side of the transparent adhesive layer, and the display information is printed by printing on the transparent layer and the cold foil attached to the separator. It can be formed easily.

  In the present invention, the adhesive layer is an ultraviolet curing agent layer, and the adhesive (adhesive) applied by printing with the printing unit is cured by ultraviolet irradiation, so that the cold foil and the transparent layer are cured. Can be formed.

The manufacturing method of the shielding label of this invention is a transparent adhesive layer, a transparent layer, and 1st printing from the said back side with respect to the cold foil as a shielding layer by which display information can be visually recognized on the front and back sides, and the back side can be adhere | attached. A method for producing a shielding label in which a layer, an adhesive layer, and a second printed layer are laminated on the surface side of the cold foil,
Laminating the transparent adhesive layer, the transparent layer, the first printed layer, the adhesive layer, and the cold foil;
Laminating the second printed layer on the surface side of the cold foil;
By having a cold foil, it can be in a state in which the thickness dimension of the label is suppressed, and when the shielding label is pasted, there is no level difference between the object to be pasted at the contour position Can be thinned. At the same time, the cold foil can provide sufficient shielding, so that visibility is improved in both the second printed layer on the front side when the shielding label is attached and the first printed layer on the back side. It is possible to improve.

  In addition, the adhesive layer is an ultraviolet curing agent layer, and the cold foil is applied on the upper side (front side) of the adhesive layer formed by printing by a printing unit by irradiating ultraviolet rays from the surface side of the cold foil. The cold foil and the transparent layer can be bonded by placing and activating the adhesive layer by irradiating ultraviolet rays from the upper side (surface side) and then curing. At this time, by performing ultraviolet irradiation before forming the second printed layer, it is possible to prevent the ultraviolet rays from being blocked by the second printed layer and insufficiently curing the adhesive. Furthermore, ultraviolet irradiation can be performed from the upper side (surface side) by performing ultraviolet irradiation before forming the second printed layer, that is, by performing ultraviolet irradiation before shielding the white. As a result, if UV irradiation is attempted after white shielding, the UV may be blocked by white shielding, and the adhesive layer may not be cured sufficiently. It is possible to eliminate the difficulty that is not easy.

  By setting the thickness of the cold foil of the present invention in the range of 5 to 15 μm, when the shielding label is attached to the object to be attached, the step is emphasized by the thickness of the label in the outline of the label. There is no end.

In the present invention, a first supply step of supplying a label base paper as a separator having a release layer temporarily attached by a transparent adhesive layer applied to the back surface of the transparent layer;
A first printing step of printing the first printing layer on the surface of the transparent layer;
An adhesive layer forming step of forming the adhesive layer to be an ultraviolet curing agent layer on the first printed layer;
A second supply step for supplying the cold foil;
A bonding step in which the adhesive layer is cured by irradiating ultraviolet rays from the surface side of the cold foil and the transparent layer and the cold foil are bonded together.
A second printing step of printing the second printed layer on the surface of the cold foil;
By using a printing unit that uses an ultraviolet curable ink, a shielding label can be produced simply by using an adhesive layer made of an ultraviolet curing agent and using the same printing unit. In the printing unit using ultraviolet curable ink, since the ultraviolet ray irradiation is performed from the same side as the surface on which the ink is printed, the curing process is performed. It is possible to perform a curing process on the adhesive layer.

  In the present invention, after the bonding step, by having a shielding printing step of forming a shielding printing layer on the front side surface of the cold foil, the ultraviolet irradiation in the bonding step is performed before the second printing step. Further, it is possible to prevent the ultraviolet ray from being shielded by the shielding printing layer or the second printing layer and insufficiently curing the adhesive.

  According to the present invention, it is possible to provide sufficient shielding without increasing the layer thickness, to prevent the visibility of display information provided on both sides of the front and back surfaces from being deteriorated, and to label the label. When attached to the object to be attached, there is an effect that the step of the thickness of the label is not emphasized in the contour line.

It is sectional drawing which shows 1st Embodiment of the shielding label which concerns on this invention. It is process drawing which shows the manufacturing process in 1st Embodiment of the shielding label which concerns on this invention. It is process drawing which shows the manufacturing process in 1st Embodiment of the shielding label which concerns on this invention. It is process drawing which shows the manufacturing process in 1st Embodiment of the shielding label which concerns on this invention. It is a schematic diagram which shows the manufacturing apparatus in 1st Embodiment of the shielding label which concerns on this invention.

Hereinafter, a first embodiment of a shielding label according to the present invention will be described with reference to the drawings.
FIG. 1 is a schematic cross-sectional view showing a shielding label in the present embodiment. In the figure, reference numeral 10 denotes a shielding label.

  As shown in FIG. 1, the shielding label 10 according to the present embodiment includes a label base paper (release paper) R as a separator to which a release layer is temporarily attached from the back side to the front side, a transparent adhesive layer 11, and transparent The layer 12, the first printing layer 13, the shielding printing layer (white) 14, the adhesive layer 15, the cold foil 16, the shielding printing layer (white shielding) 17, the second printing layer 18, and the OP varnish 19 are laminated.

  As the label base paper (release paper) R, a sheet obtained by applying a release agent such as a silicone resin that is easily peelable to the transparent adhesive layer 11 on one side of a paper substrate or a film substrate, or can be easily peeled off. The separator is a surface-treated separator, and the surface thus peeled is temporarily attached to the transparent adhesive layer 11 applied to the back surface of the transparent layer 12.

  The transparent adhesive layer 11 is made of a pressure-sensitive adhesive, and as a pressure-sensitive adhesive that can be used, for example, an arbitrary pressure-sensitive adhesive such as an emulsion system, a solvent system, and a hot melt system can be used, and the material is acrylic. The rubber system is arbitrary, and the strength of the pressure-sensitive adhesive is arbitrary such as a strong viscosity type or a weak viscosity type. The thickness of the transparent adhesive layer 11 is set in the range of 15 to 30 μm.

  The transparent layer 12 is a resin film such as polyethylene, polypropylene, or polyethylene terephthalate, and the thickness of the transparent layer 12 is set in the range of 25 to 100 μm.

  The first printed layer 13 has various information that needs to be concealed so that it can be seen only from the back side of the transparent layer 12 (service information for customers, application information, lottery information regarding various campaigns and sales promotion activities, etc.) Etc.). The first printed layer 13 is printed so that characters, designs, and the like are reversed in order to be visible only from the back side of the transparent layer 12.

  In addition to the offset printing method or the gravure printing method, the first printing layer 13 can adopt a letterpress printing method, a screen printing method, a flexographic printing method, a roll coating method, and the like. Oil-based inks and ink drying methods include ultraviolet (UV) curable drying ink (UV ink), electron beam (EB) curable drying ink (EB ink), two-component reaction curable ink, and oxidative drying ink Solvent evaporation type ink etc. can be used. In particular, it is preferable to use (UV) curable drying ink (UV ink).

  The shielding printing layer (white) 14 is not limited to white, but can be printed or coated on the entire surface in order to enhance the respective shielding hardening for the display on the front and back surfaces. Further, the shielding printing layer (white) 14 can be omitted.

  The adhesive layer 15 is made of a pressure-sensitive adhesive. Examples of the pressure-sensitive adhesive used include an aqueous pressure-sensitive adhesive, an oil-based pressure-sensitive adhesive, an ultraviolet (UV) fixed pressure-sensitive adhesive (UV pressure-sensitive adhesive), and an electron beam (EB) fixed pressure-sensitive adhesive. (EB pressure sensitive adhesive), two-component reaction fixed pressure sensitive adhesive, oxidation fixed pressure sensitive adhesive, solvent volatilization pressure sensitive adhesive, and the like can be used. In particular, an ultraviolet (UV) fixed adhesive (UV adhesive) is preferable.

  The cold foil 16 is a shielding layer and is made of a metal foil as a rolled material made of aluminum, gold, silver or the like, and the thickness thereof is set in the range of 5 to 15 μm. In addition, the surface which is the printing surface of this cold foil 16 can be subjected to surface treatment.

  The shielding printing layer (white shielding) 17 is not limited to white, but can be printed or applied on the entire surface in order to enhance the respective shielding and hardening for the display on the front and back surfaces. Further, the shielding printing layer (white shielding) 17 can be omitted.

  The second printed layer 18 is visible only from the surface side of the cold foil 16, and performs various information (service information for customers, application information, lottery information, etc. regarding various sales campaigns and sales promotion activities). Printed. The second printed layer 18 is printed so that characters, designs, and the like are in a normal orientation so that the second printed layer 18 can be viewed only from the surface side of the cold foil 16.

  The OP varnish 19 is a surface finish layer made of OP (Over Print) varnish, but may be omitted.

  The shielding label 10 in the present embodiment is not an aluminum vapor deposition layer or a transparent film provided with another layer so as to be shielded as a shielding layer, but uses a cold foil 16 to improve shielding performance. However, the layer thickness can be reduced.

  Hereinafter, the manufacturing method of the shielding label 10 in this embodiment is demonstrated based on drawing.

  2, 3, and 4 are process diagrams illustrating a method for manufacturing a shielding label in the present embodiment, and FIG. 5 is a schematic diagram illustrating a manufacturing apparatus for the shielding label in the present embodiment. Reference numeral 20 denotes a shielding label manufacturing apparatus.

  The manufacturing method of the shielding label in this embodiment includes a first supply step S01, a first printing step S02, a first curing step S03, a shielding printing layer (as shown in FIGS. White) forming step S04, shielding printing layer (white) curing step S05, adhesive layer forming step S06, second supply step S07, bonding step S08, shielding printing layer (white shielding) forming step S09 , A shielding printing layer (white shielding) curing step S10, a second printing step S11, a second curing step S12, and a surface finishing step S13.

In the first supply step S01, as shown in FIG. 2A, a label base paper R as a separator having a release layer temporarily attached by a transparent adhesive layer 11 applied to the back surface of the transparent layer 12 is supplied.
The label base paper R is a laminate composed of a pressure-sensitive adhesive layer 11 laminated on the back surface of a transparent layer 12 made of a transparent film (polyethylene, polypropylene, polyethylene terephthalate, etc.) and a release sheet R temporarily attached to the pressure-sensitive adhesive layer 11. The label forming tack sheet having the structure is supplied as the substrate unwinding means 21 as shown in FIG.
The base material unwinding means 21 unwinds and feeds the label forming tack sheet from the base material unwinding means 21 together with the infeed nip roll that rotates oppositely.

In the first printing step S02, as shown in FIG. 2 (b), the label forming tack sheet is introduced into the first printing means 22a, and the first printing layer 13 of the reverse image is applied to the surface of the transparent layer 12. Print form.
The first printing unit 22a is a unit that prints by a gravure printing method or the like, and prints out information to be printed (product campaign information, sales promotion information, application information, lottery information, etc.) generated in the first printing unit 22a. As shown in FIG. 5, information such as characters and figures is printed on the surface of the transparent layer 12 through the guide roll of the first printing means 22a as shown in FIG. To do.

  As the coating method and printing method of the first printing means 22a, in addition to the offset printing method or the gravure printing method, typographic printing, screen printing, flexographic printing method, roll coating method, etc. can be adopted. As water-based ink, oil-based ink, and ink drying methods include ultraviolet (UV) curable drying ink (UV ink), electron beam (EB) curable drying ink (EB ink), two-component reaction curable ink Oxidative drying inks, solvent volatilization inks and the like can be used. In addition, as the first printing unit 22a for printing the first printing layer 13, a printing unit capable of printing one to several colors, each having one to several units of each color printing unit, can be used. Specific examples of the ink used include, for example, offset ink names; FDS colors TK; manufactured by Toyo Ink Manufacturing Co., Ltd., offset ink names; UV161 colors; manufactured by T & K Toka Co., Ltd. The printing method of the first printing unit 22a may be digital printing using an ink jet method, an electrophotographic method, a thermal transfer method, or the like.

  Next, as shown in FIG. 2C, as the first curing step S03, after the first printing step S02, ultraviolet (UV) curable drying ink (UV ink), electronic When using line (EB) curable dry ink (EB ink), after coating and printing, each is introduced into UV irradiation means or EB irradiation means 22b, respectively, and when using solvent volatilization ink, etc. It introduce | transduces into the heating-drying means 22b, and the 1st printing layer 13 is hardened and dried.

In the shielding printing layer (white) forming step S04, as shown in FIG. 2D, after the first curing step S03, the shielding printing layer (white) printing unit 23a is used to perform shielding printing after the first curing step S03. The layer (white) 14 is applied to the entire surface of the transparent layer 12 including the first printed layer 13 to be laminated.
As a coating method and a printing method in the shielding printing layer (white) forming step S04, a printing method similar to that of the first printing unit 22a can be used.

  Next, as shown in FIG. 2 (e), as the covering printing layer (white) curing step S05, after the shielding printing layer (white) forming step S04, similarly to the first curing step S03, UV irradiation means or EB irradiation means. It introduce | transduces into 23b, and the shielding printing layer (white) 14 is hardened and dried.

  As shown in FIG. 5, the adhesive layer forming step S06 is introduced between the impression cylinder and the plate cylinder of the pressure-sensitive adhesive application means 24a (impression cylinder, plate cylinder, coating liquid supply) by a gravure application method, and the process shown in FIG. ), An adhesive layer 15 is laminated on the surface of the transparent layer 12 on which the shielding printing layer (white) 14 is printed by applying an adhesive to the entire surface of the shielding printing layer (white) 14.

  As the coating method of the coating means 24a, in addition to the gravure coating method, an offset printing method, a letterpress printing method, a screen printing method, a flexographic printing method, a roll coating method, etc. can be adopted. Adhesive, oil-based adhesive, ultraviolet (UV) fixed adhesive (UV adhesive), electron beam (EB) fixed adhesive (EB adhesive), two-component reaction fixed adhesive, oxidation fixed adhesive, Solvent volatilization type adhesives can be used.

  As the second supply step S07, as shown in FIG. 5, cold foil 16 wound in a roll shape is supplied as a foil roll 25, and as shown in FIG. The foil 16 is laminated.

  Next, as shown in FIG. 5, as the bonding step S08, the cold foil 16 laminated on the adhesive layer 15 which is an ultraviolet (UV) fixed adhesive (UV adhesive) is applied to UV irradiation means or EB irradiation means. Introduced into 24b, as shown in FIG. 3C, the adhesive layer 15 is irradiated with ultraviolet rays from the side opposite to the shielding printing layer (white) 14, that is, from the surface side (upper side) of the cold foil 16, The cold foil 16 and the adhesive layer 15 are fixed on the transparent layer 12. Alternatively, for the adhesive layer 15 that is an electron beam (EB) fixing type adhesive (EB adhesive) or a solvent volatilization type adhesive, etc., it is introduced into the electron beam (EB) fixing means 24b and Then, the cold foil 16 and the adhesive layer 15 are fixed on the transparent layer 12 by irradiating an electron beam from the side opposite to the shielding printing layer (white) 14, that is, the surface side (upper side) of the cold foil 16. Alternatively, the adhesive layer 15 is fixed on the transparent layer 12 by being introduced into the heating and drying means 24b.

As the shielding printing layer (white shielding) forming step S09, as shown in FIG. 5, after the bonding step S08, the shielding printing layer (white shielding) printing unit 26a similar to the first printing unit 22a is used, as shown in FIG. As shown in FIG. 3, a shielding printing layer (white shielding) 17 is applied to the entire surface of the cold foil 16 to be laminated.
The coating method and printing method of the shielding printing layer (white shielding) printing unit 26a in the shielding printing layer (white shielding) forming step S09 can be the same printing method as the first printing unit 22a.

  Next, as shown in FIG. 3 (e), the shielding printing layer (white shielding) curing step S10 is performed as shown in FIG. 5 after the shielding printing layer (white shielding) forming step S09, as in the first curing step S03. In addition, the shielding printing layer (white shielding) 17 is cured and dried by being introduced into the UV irradiation means or EB irradiation means 26b corresponding to the UV irradiation means or EB irradiation means 24b.

In the second printing step S11, as shown in FIG. 4A, the surface of the shielding printing layer (white shielding) 17 is introduced and sent between the second printing means 27a (plate cylinder, impression cylinder) by the gravure printing method. The second print layer 18 having a forward orientation image is formed by printing.
The second printing means 27a is a means for printing by the same gravure printing method as the first printing means 22a.

  Then, as the second curing step S12, as shown in FIG. 4B, in the second printing step S11, ultraviolet (UV) curable drying ink (UV ink), electronic When using a line (EB) curable dry ink (EB ink), it is introduced into the UV irradiation means or the EB irradiation means 27b after coating and printing, respectively, and the surface side (upper side) of the second printing layer 18 is used. ) Is irradiated with UV or EB to cure and dry the second printed layer 18. Or when using solvent volatilization ink etc., it introduce | transduces into the heating-drying means 27b, respectively, and the 2nd printing layer 18 is hardened and dried.

  Finally, as a surface finishing step S13, an OP varnish 19 is formed on the outermost surface of the laminate as shown in FIG.

  Subsequently, as shown in FIG. 5, while unwinding and feeding the tack sheet on which the OP varnish 19 is laminated, it is introduced into the rotary (rotary) type or reciprocating (up and down repeated operation) type label die cutting means 29a, The laminate of the tack sheet is die-cut into a label shape (closed curve diagram shape) leaving the separator R, thereby creating a shielding label that is temporarily stuck on the continuous separator R surface and die-cut into the label shape. To do.

  Subsequently, as shown in FIG. 5, the stamped separator R is introduced into the peeling roll 29b, and a continuous margin (extracted blank) sheet on the outer periphery of the shielding label that has been stamped into a label shape is removed by the scraping roll 29c. A continuous separator R surface is obtained by winding the continuous separator R together with the shielding label temporarily attached to the surface by the label winding means 29d (outfeed nip roll rotating oppositely driven) while winding. On the top, the shielding label 10 having the laminated structure shown in FIG. 4C is obtained.

  The shielding label 10 in this embodiment can be provided with sufficient shielding properties without increasing the layer thickness by the cold foil 16, and the visibility of display information provided on both sides of the front and back surfaces is reduced. In addition to preventing this, a step in the thickness of the shielding label 10 is not emphasized in the contour line when the shielding label 10 is attached to the object to be attached.

10 ... shielding label 11 ... transparent adhesive layer 12 ... transparent layer 13 ... first printing layer 14 ... shielding printing layer (white)
15 ... Adhesive layer 16 ... Cold foil 17 ... Shield printing layer (white shield)
18 ... 2nd printing layer 19 ... OP varnish 20 ... Shielding label manufacturing apparatus

Claims (2)

From the back side, the transparent adhesive layer, the transparent layer, the first printed layer, and the adhesive layer are laminated with respect to the cold foil as a shielding layer in which the display information can be visually recognized on the front and back sides, and the back side can be adhered, A method for producing a shielding label in which a second printed layer is laminated on the surface side of a cold foil,
Laminating the transparent adhesive layer, the transparent layer, the first printed layer, the adhesive layer, and the cold foil;
Laminating the second printed layer on the surface side of the cold foil;
And it has a,
The method for producing a shielding label, wherein the adhesive layer is an ultraviolet curing agent layer, and ultraviolet rays are irradiated from the surface side of the cold foil . Method of manufacturing a shielding label according to claim 1, wherein the thickness of the cold foil, characterized in that it is set in the range of 5 to 15 [mu] m.

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