JP2017219682A - Vapor-deposited label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vapor-deposited label easy to be removed from a beer bottle, etc., while having thermostability and maintaining quality.SOLUTION: A vapor-deposited label includes: a filler layer 6 and an aluminum vapor deposition layer 5 including an alkali-soluble curable resin in this order on one side of a paper base material 7; and an alkali-soluble resin layer 8 on the other side of the paper base material. The filler layer 6 is composed of a resin composition including a polyester main agent and a curative or a resin composition including an acrylic resin and a curative.SELECTED DRAWING: Figure 1

Description

The present invention relates to a label attached to a bottle of beer, whiskey, liquor, drink, etc., and in particular, it is a vapor deposition label using vapor deposition paper to give a high-class feeling. The bottle is collected after use and attached thereto It is related with the vapor deposition label which has the characteristic excellent in the use which peels the vapor deposition label currently attached, and also uses a bottle container repeatedly by sticking a vapor deposition label newly.

  A vapor deposition label to be affixed to a bottle of beer, whiskey, liquor, drink or the like is produced by printing a pattern using printing ink on the vapor deposition paper or the like as a base paper. After printing, it is punched to the label dimensions, applied with an adhesive on the back of the vapor deposition label, and attached to the bottle.

  In addition, bottles attached with vapor deposition labels, such as beer bottles and shochu bottles, are often collected, washed and reused. In general, an alkaline cleaning liquid is used in the washing bottle treatment step, and it is desired that the vapor deposition label has a function of peeling off from the bottle by being immersed in the alkaline cleaning liquid.

  In Patent Document 1, a clay coat layer, a vapor deposition layer, and a print layer are provided on a paper base material, and the print layer is peeled off by using an ultraviolet curable alkali-soluble resin for the undercoat layer and the overcoat layer of the print layer. A label that makes it easier to do is disclosed. However, no mention is made of the ease of peeling of the adhesive and the label adhered to the bottle.

  Patent Document 2 discloses a vapor deposition label in which an alkali-soluble thermoplastic resin layer formed by extrusion molding is provided between a paper substrate and an aluminum vapor deposition layer. According to this configuration, the alkali-soluble thermoplastic resin layer is dissolved by the alkaline aqueous solution at the time of washing, and it is considered that peeling proceeds by penetrating the paper base material and the adhesive. On the other hand, when forming an aluminum vapor deposition layer, heat resistance is required because it is heated by vapor deposition, but there is a problem that heat resistance is reduced by using an extrudable thermoplastic resin. .

Utility model registration No. 2569928 JP-A-11-85035

  In view of the problems as described above, it is an object of the present invention to provide a vapor deposition label that has heat resistance and maintains quality while being easily peelable from a beer bottle or the like.

A first invention made to solve the above-described problem is that a sealing layer made of an alkali-soluble cured resin and an aluminum vapor deposition layer are provided in this order on one side of a paper base, and the other side of the paper base is And a vapor-deposited label provided with an alkali-soluble resin layer.
The second invention is further characterized in that the sealing layer is a resin composition containing a polyester main agent and a curing agent, or an acrylic resin composition and a curing agent.
The third invention is further characterized in that the ratio A / B of the curing agent (A) and the polyester main agent (B) is 0.1 to 0.7.
4th invention is characterized by the molecular weight of the said polyester-type main ingredient being 10,000-30000.
5th invention is equipped with the anchor coat layer which consists of an alkali-soluble acrylic resin further on the said aluminum vapor deposition layer, It is characterized by the above-mentioned.
The sixth invention is characterized in that a printed layer and an overcoat layer are further provided on the anchor coat layer.

  According to the present invention, the sealing layer for forming the aluminum vapor deposition layer has heat resistance and alkali solubility, and an alkali-soluble resin layer is provided on the opposite side of the paper substrate from the aluminum vapor deposition layer, so that the beer bottle can be used. It is easy to peel off and becomes a high quality vapor deposition label.

It is sectional drawing of one Example of the vapor deposition label of this invention. It is sectional drawing of another Example of the vapor deposition label of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an enlarged cross-sectional view of one embodiment of the vapor deposition label of the present invention. As shown in the cross-sectional view of FIG. 1, the vapor deposition label (base paper) 9 of the present invention is provided with a sealing layer 6, an aluminum vapor deposition layer 5, and an anchor coat layer 4 in this order on one surface of a paper base 7. The configuration is such that an alkali-soluble resin layer 8 is provided on the other surface of the paper substrate 7. Further, as shown in FIG. 2, a printed vapor deposition label 10 provided with a printing layer 2, a printing layer 2, and an overcoat layer 1 on an anchor coat layer is pasted on an adhesion surface S such as a glass bottle via an adhesive layer 9. can do.

  Specifically, pure white paper or the like is used for the paper base material 7 of the present invention, and the elongation in water when immersed in water is 2.5% or less, and particularly preferably 1.5% or less. When a paper base having a higher elongation in water is used, if water droplets or the like adhere, cracks or the like may occur in each layer and the appearance may deteriorate.

  The sealing layer 6 of the present invention is used to prevent the deposited material forming the aluminum deposited layer 5 from entering the paper substrate 7 or to seal the unevenness of the deposited label base paper and pinholes. is there.

  As a material for forming the sealing layer 6, for example, a melamine resin, an alkyd resin, a polyphenol resin, an acrylic resin, a polyester resin, a urethane resin, or a resin composed of a mixture of two or more of these resins is used. In particular, a resin having a domain that is cleaved by an alkali component is used in order to give the vapor deposition label a washability. These resins are dissolved in a solvent containing, for example, xylene, toluene, water or the like as a main component to form the sealing layer 6 as a coating solution.

  The resin constituting the sealing layer 6 of the present invention is particularly preferably a two-component curable resin, a thermosetting resin or a photocurable resin containing a main agent and a curing agent, and is soluble in sodium hydroxide (alkaline cleaning solution). I just need it. As the main agent, acrylic resins, polyester resins, nitrocellulose resins and the like can be used. As the curing agent, a melamine resin or an isocyanate resin can be used.

  In view of acrylic solubility and heat resistance, it is particularly preferable to include a combination of a polyester-based main agent and a melamine-based resin crosslinking agent.

  It is preferable that the ratio A / B is 0.1 to 0.7 when the ratio of the curing agent is (A) and the ratio of the polyester-based main component is (B). When it is 0.1 or more, heat resistance can be maintained, and when it is 0.7 or less, the cured resin swells with respect to the alkaline cleaning liquid and can be dissolved appropriately.

  Furthermore, the molecular weight of the polyester-based main agent is preferably 10,000 to 30,000. The heat resistance can be further improved.

Other materials may be added to the sealing layer 6 as long as the effect can be maintained.
For example, by adding a resin or fine particles having high solubility in sodium hydroxide or providing a sea-island structure in the resin layer, the permeability of the alkaline cleaning liquid to the paper substrate side can be enhanced. The average particle diameter of the preferred fine particles and island regions of the sea-island structure is 0.1 to 2.0 μm.

The sealing layer 6 can be formed by applying the coating solution to the surface of the paper substrate 7 by a gravure method or a roll coating method. Further, the coating amount is preferably set to 2 g / ^{m 2} or more 5 g / ^{m 2} or less. When it is smaller than 2 g / m ² , the smoothness of the sealing layer 6 cannot be obtained, and when it is larger than 5 g / m ² , the suitability for washing bottles is poor.

  Moreover, the metal vapor deposition layer which comprises a vapor deposition label gives the label a glossiness and provides cosmetics, and especially the aluminum vapor deposition layer 5 which is advantageous from the viewpoint of solubility in an alkaline cleaning solution and cost is preferable. The film thickness of the aluminum vapor deposition layer is preferably 30 nm to 80 nm. If the film thickness is too thin, gloss may not be obtained.

The aluminum vapor deposition layer 5 is generally formed by, for example, using a winding-type vacuum vapor deposition machine, and evaporating the web-shaped paper base material 7 on which the sealing layer 6 has been applied heated to around 1400 ° C. It can be obtained by evaporating aluminum in the source in a vacuum drum maintained at a vacuum degree of about 10 ⁻² Pa.

  Since the aluminum vapor deposition layer 5 is provided on the surface of the paper substrate 7 via the sealing layer 6, the film surface is smooth and a metallic luster can be obtained. Further, since the aluminum vapor-deposited layer 5 has a metallic luster, it has a design effect that imparts cosmetics and the like to the printed layer 2 provided through the anchor coat layer 4 and further the underprint varnish layer (not shown). It can be a certain vapor deposition label.

  Further, the anchor coat layer 4 of the present invention is provided for the purpose of protecting the aluminum vapor-deposited layer 5 and improving the adhesion with the printing layer 2 and the printing varnish layer.

  As a material for forming the anchor coat layer 4, an acrylic resin, a polyester resin, or the like is used, and an alkali-soluble acrylic resin whose film is destroyed by an alkali component is particularly preferable. The anchor coat layer 4 is formed by dissolving these resins in a solvent such as toluene or butyl acetate to form a coating solution or an aqueous (water-soluble or emulsion) coating solution.

The anchor coat layer 4 can be formed by applying the coating solution to the aluminum vapor deposition layer 5 by a gravure method or a roll coating method. The coating amount is preferably 0.1 g / m ² or more.

  The alkali-soluble resin layer 8 of the present invention is provided in order to improve the releasability to the alkaline cleaning liquid on the back surface (the surface opposite to the aluminum vapor deposition layer lamination surface) of the paper base material 7. The alkali-soluble resin is dissolved by the alkali cleaning liquid that has permeated from the end face of the vapor deposition label and the paper substrate 7, so that the vapor deposition label can be peeled off quickly and easily.

  As a material for forming the alkali-soluble resin layer 8, an acrylic resin, a polyester resin, or the like is used, and an alkali-soluble acrylic resin whose film is destroyed by an alkali component is particularly preferable. These resins are dissolved in a solvent such as toluene or butyl acetate to form a coating solution, or an aqueous (water-soluble or emulsion) coating solution to form the alkali-soluble resin layer 8.

The alkali-soluble resin layer 8 can be formed by applying the coating solution to the back surface of the Al paper substrate 7 by a gravure method or a roll coating method. The coating amount is preferably 0.1 g / m ² or more.

  Sheet of the vapor-deposited label base paper 9 obtained as described above is cut, for example, UV offset printing, oil-based offset, flexographic printing, gravure printing, underprint varnish layer (which may not be present) on the surface of the anchor coat layer 4, A printed layer 2 and an overcoat layer 1 are provided to obtain a vapor deposition label 10 on which multiple label designs are applied.

  The underprint varnish layer of the present invention is provided for the purpose of improving the adhesion between the anchor coat layer 4 and the printing layer 2 made of UV offset ink or the like.

  The printing layer 2 of the present invention is formed in order on the vapor deposition label base paper 9 as a printing layer for printing a pattern, and the overcoat layer 1 as a layer for protecting the UV offset ink layer 2 of the printing layer.

  Examples of the material used for the printing layer 2 and the overcoat layer 1 include a nitrocellulose resin system, a polyamide resin system, an acrylic resin system, and a styrene resin system that have a domain whose bond is broken by an alkali component.

  The underprint varnish layer, the printing layer 2, and the overcoat layer 1 can be formed by offset printing, gravure printing, and flexographic printing, respectively. The coating thickness is preferably 0.5 μm or more and 5 μm or less, respectively.

  The web-shaped multi-sided vapor deposition label 10 obtained as described above is punched into individual vapor deposition label dimensions, loaded on the feeder section of a labeler (labeling machine), and one sheet from the feeder section. Take them out one by one, apply an adhesive on the back and stick them to the bottle.

  For the adhesive, for example, an aqueous type using a resin such as glue or poval using natural protein or an aqueous emulsion type using a resin such as acrylic or ethylene / vinyl acetate copolymer can be used.

DESCRIPTION OF SYMBOLS 1 ... Overcoat layer 2 ... Print layer 4 ... Anchor coat layer 5 ... Aluminum vapor deposition layer 6 ... Sealing layer 7 ... Paper base material 8 ... Alkali-soluble resin layer 9 ... Vapor deposition labels (base paper)
10 ... Vapor deposition label (printed vapor deposition label)
11 ... Adhesive layer

Claims (6)

  Vapor deposition characterized in that a sealing layer made of an alkali-soluble cured resin and an aluminum vapor deposition layer are provided in this order on one side of the paper base material, and an alkali soluble resin layer is provided on the other side of the paper base material. label.   The vapor deposition label according to claim 1, wherein the sealing layer is a resin composition containing a polyester-based main ingredient and a curing agent or a resin composition containing an acrylic resin and a curing agent.   The vapor deposition label according to claim 2, wherein the ratio A / B of the curing agent (A) and the polyester-based main agent (B) is 0.1 to 0.7.   The molecular weight of the said polyester-type main ingredient is 10,000-30000, The vapor deposition label of Claim 2 or 3 characterized by the above-mentioned.   The vapor deposition label according to any one of claims 1 to 4, further comprising an anchor coat layer made of an acrylic soluble acrylic resin on the aluminum vapor deposition layer.   The vapor deposition label according to claim 5, further comprising a printed layer and an overcoat layer on the anchor coat layer.

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