JP4697956B2 - Laminate and method for producing the same - Google Patents

Description

  The present invention relates to a laminate of packaging materials in which metal vapor-deposited layers having metallic gloss are laminated by vapor deposition.

  Recently, high-grade cartons for pharmaceuticals, cosmetics, gifts, foods, etc., commercial printed materials, cover covers for magazines and books, packaging materials used for displays, etc., film-glued paper that has a glossy surface and gives a high-class feel has been used. There is a lot to do. In order to obtain a film-laminated paper having a high surface smoothness, it is common to use a paper having a relatively high smoothness, such as a cast-coated paper, and a plastic film bonded to the surface thereof. ing. Furthermore, in order to improve the surface design, a packaging material using a paper with a metallic feeling is used, a composite sheet in which aluminum foil or an aluminum vapor deposited film is laminated on paper, or a metal on which aluminum is directly vapor deposited. A composite sheet of a vapor deposition layer and paper is used.

However, in the above-described conventional packaging material with a metallic feeling, the packaging material in which paper and aluminum foil are laminated has a high manufacturing cost, and the resulting composite sheet has unevenness on the surface of the aluminum foil. Therefore, there is a drawback that a sufficient metallic luster cannot be obtained. In addition, in packaging materials in which paper and aluminum vapor-deposited film are laminated, the metal gloss of the aluminum vapor-deposited film is not sufficient, and the adhesive strength between the aluminum vapor-deposited layer and the film is not sufficient. In the secondary processing, the metal vapor deposition layer has a defect such as peeling. Further, although aluminum is directly vapor deposited on paper and a packaging material is also used, there is a problem in that the metal luster is lowered due to high cost and unevenness on the paper surface appears on the surface of the aluminum vapor deposited layer. Furthermore, a packaging material is also used in which an aluminum vapor-deposited layer is transferred to paper by a transfer method after aluminum is vapor-deposited on a film, but there are problems such as high cost. On the other hand, a method for producing a composite sheet of a film and paper having a metal vapor-deposited layer that has improved these drawbacks has also been proposed (see, for example, Patent Document 1). Although this method has improved the metallic luster and quality considerably, it is not sufficient and has the disadvantages of high cost.
Japanese Patent Laid-Open No. 5-116246

  The present invention is to provide a laminate for packaging material having a metallic feeling and a high design property at low cost.

In order to achieve the above object, the present invention according to claim 1 is a metal vapor deposition film layer provided with a metal vapor deposition layer on one side of a surface film layer, a printing layer, and a plastic film layer, and formed by hot melt extrusion. A polyethylene resin layer and a paper layer are sequentially laminated , and the plastic film layer side of the metal vapor deposition film layer is laminated with the polyethylene resin layer formed by hot melt extrusion .

The present invention according to claim 2 is characterized in that, in the laminate according to claim 1, a mat coat layer is partially provided on the surface of the surface film layer.
Moreover, this invention of Claim 3 provides a printing layer in the one surface of a surface film, laminate | stacks this printing layer and the metal vapor deposition surface of a metal vapor deposition film via an adhesive agent, a surface film layer, a printing layer An intermediate laminate in which metal vapor deposited film layers are sequentially laminated, and after the adhesive of the intermediate laminate is cured, the film surface of the metal vapor deposited film layer and the paper layer of the intermediate laminate are made of polyethylene. A method for producing a metallic laminate, characterized in that a resin is subjected to hot melt extrusion and sandwich lamination.

  The laminate of the present invention provides an excellent metallic feeling by laminating a surface film layer provided with a printing layer and a metal vapor deposition film layer, and can be used for a packaging material having a high-class feeling.

  Furthermore, the mat coat layer can be partially provided on the surface of the surface film layer in synchronism with the printing layer, and there is an effect that high designability can be imparted in terms of design.

  The present invention will be described in detail below with reference to the drawings. FIG. 1 is a cross-sectional view showing an embodiment of the laminate of the present invention. FIG. 2 is a perspective view showing an example of a carton produced using the laminate of the present invention. FIG. 3 is a cross-sectional view showing another embodiment of the laminate of the present invention.

  First, an embodiment of the laminate 10 of the present invention will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, the laminate 10 of the present invention includes a metal vapor deposition film layer provided with a metal vapor deposition layer 3 that imparts a metallic feeling to one surface of a surface film layer 1, a printing layer 2 such as a pattern, and a plastic film layer 4. 5 and a paper layer 6.

  The surface film layer 1 is provided as a protective layer for improving the surface gloss of the printing layer 2 and preventing ink from falling off due to rubbing and scratching. Polypropylene film, polyethylene film, polyethylene terephthalate film, nylon film, polystyrene film, polychlorinated film Vinyl film can be used. Among these, films having good printability, transparency, and bonding processability are preferable, and examples thereof include polypropylene, polyethylene terephthalate film, and polyvinyl chloride film. The thickness is preferably in the range of 6 μm to 50 μm.

  The printed layer 2 is a layer in which a pattern, a display, or the like is printed on the surface of the surface film layer 1 facing the metal vapor deposition layer 3, and may be a solid pattern or a pattern pattern. The printing can be provided by a known printing method such as gravure printing, offset printing, flexographic printing, letterpress printing, or screen printing. The ink to be used is not particularly limited, but a transparent color ink type is preferable in order to improve the metallic effect.

  The metal vapor deposition film layer 5 is composed of a metal vapor deposition layer 3 formed by vacuum vapor deposition of metal on the plastic film layer 4, and the metal vapor deposition layer 3 is a single metal such as aluminum, chromium, tin, gold, silver, copper, or brass. It can be formed by vapor deposition of an alloy such as bronze. As the plastic film layer 4, a polypropylene film, a polyethylene film, a polyethylene terephthalate film, a nylon film, a polystyrene film, a polyvinyl chloride film, or the like can be used, but a versatile polypropylene or polyethylene terephthalate film is preferable.

  The paper layer 6 can be a paper board such as a coated ball, a manila ball, a special board, a high board, or a card paper. The basis weight is preferably 180 g / m2 to 600 g / m2. Depending on the application of the carton used, the type and basis weight of the paper can be selected as appropriate, but paper with good surface smoothness is preferred to enhance the design effect.

  Below, the manufacturing method of the laminated body 10 of this invention is demonstrated.

  First, the printing layer 2 is provided on one side of the surface film layer 1. This printing layer 2 is a back print printing such as a pattern or display, and a known printing method such as gravure printing, offset printing, flexographic printing, letterpress printing, and screen printing can be used. A printing method is preferred. The reverse printing referred to herein refers to printing in which a pattern or display formed as the printing layer 2 is viewed through the surface film layer 1. By performing such back printing, delicate patterns, characters and the like that cannot be obtained by surface printing can be reproduced, and a higher-class feeling can be obtained. Thereafter, the surface of the printing layer 2 provided on the surface film layer 1 and the surface of the metal vapor deposition layer 3 provided on the metal vapor deposition film layer 5 are made of urethane adhesive, acrylic adhesive, ethylene vinyl acetate adhesive, or the like. Paste through adhesive. As a bonding method, a dry lamination method, a wet lamination method, or the like can be used, but a high transparency is obtained, and a dry lamination method in which a high adhesive force is obtained by a curing reaction of a urethane-based adhesive is desirable.

  Next, the surface of the plastic film layer 4 of the metal vapor deposition film layer 5 and the smooth surface of the paper layer 6 are bonded together. As the bonding method, dry lamination, wet lamination, and extrusion lamination in which polyethylene or the like is subjected to hot melt extrusion can be used. However, in order to obtain a high metallic luster, extrusion lamination is preferable. This is because the influence of the surface smoothness of the paper layer 6 on the metallic feeling is alleviated by the thickness of the resin such as polyethylene melted by heat, and a higher metallic feeling is obtained. In this case, a urethane anchor coating agent may be applied to the surface of the plastic film layer 4. Moreover, you may give a corona process and application | coating of an anchor coating agent to the surface bonded to the metal vapor deposition film layer 5 of the paper layer 6. FIG.

  The laminate of the present invention thus produced has high designability and can be used as a packaging material for cartons, labels, posters and the like. Furthermore, since printing is performed only with the front film, the cost of material loss can be kept low compared to the conventional method of printing on a laminate with a paper layer, and the production can be performed at low cost. In FIG. 2, the Example which produced the carton 7 using the laminated body 10 of this invention is shown.

  Moreover, as another manufacturing method, the surface of the plastic film layer 4 of the metal vapor deposition film layer 5 and the smooth surface of the paper layer 6 are first bonded. Next, the printing layer 2 is provided on the surface of the metal vapor deposition film layer 5 on the metal vapor deposition layer 3. The printing method can be performed by a general printing method such as offset printing, gravure printing, flexographic printing, letterpress printing, or screen printing. Subsequently, the printing layer 2 and the surface film layer 1 are laminated via an adhesive.

  The above manufacturing method is preferable because the above-described another manufacturing method is slightly inferior to the above manufacturing method and has a high cost for material loss. That is, according to the above manufacturing method, the metal vapor deposition layer 3 is integrated with the surface film layer 1 and the plastic film layer 4 by laminating the surface film layer 1 / printing layer 2 / metal vapor deposition film layer 5 first. Held. Then, in order to bond and laminate with the paper layer 6, the influence of the smoothness of the paper layer 6 is reduced in the integrated metal vapor deposition layer 3, and it has excellent metallic luster and a high metallic feeling. It can be granted. Furthermore, by applying extrusion lamination, the influence of the surface smoothness of the paper layer 6 on the metallic feel is mitigated, and a higher metallic feel is obtained.

  Next, another embodiment of the laminate of the present invention will be described with reference to FIG. As shown in FIG. 3, the laminate 20 of the present invention is obtained by partially providing a mat coat layer 8 on the surface of the surface film layer 1. The mat coat layer 8 is partially formed in synchronization with the printing layer 2. By adopting such a configuration, the contrast between the metallic feeling excellent in metallic luster and the mat coat layer 8 is emphasized, and the effect of increasing the sense of quality is further exhibited. The mat coat layer 8 can also be provided on the entire surface.

  Next, a manufacturing method will be described. First, the matte layer 8 is partially provided in synchronism with the print layer 2 on one side of the surface film layer 1 and the pattern or display of the print layer 2 on the other side. The print layer 2 is formed by back printing, and the mat coat layer 8 is formed by surface printing and performing double-sided printing in synchronization. The printing method is preferably a gravure printing method with good post-processing suitability. Here, the surface printing refers to printing in which the surface of the mat coat layer 8 is directly seen, and the back printing refers to that described in (paragraph 16). The subsequent steps are the same as those in the embodiment of the present invention, and the description thereof is omitted.

  Moreover, as another manufacturing method, the surface of the plastic film layer 4 of the metal vapor deposition film layer 5 and the smooth surface of the paper layer 6 are first bonded. Next, the printing layer 2 is provided on the surface of the metal vapor deposition film layer 5 on the metal vapor deposition layer 3. The printing method can be performed by a general printing method such as offset printing, gravure printing, flexographic printing, letterpress printing, or screen printing. Subsequently, the printing layer 2 and the surface film layer 1 are laminated via an adhesive. Further, the laminate is cut into a sheet at a predetermined position, and the mat coat layer 8 is partially formed with a sheet-fed printing machine or a coater in alignment with the printing layer 2. Furthermore, as another method, after the laminate 10 is manufactured by the method shown in the embodiment of the present invention, the laminate is cut into a sheet at a predetermined position in the same manner as the above method, and the printed layer 2 is formed. There is a method in which the laminate 20 is manufactured by partially forming the mat coat layer 8 with a sheet-fed printing machine or a coater. However, the above two methods are costly because the mat coat layer manufacturing process is a separate process, and the method described in (Paragraph 22) is preferable.

  Next, the present invention will be described in more detail with reference to the following examples.

  A printing layer 2 is provided on one surface of a 12 μm-thick double-sided corona-treated biaxially stretched polyethylene terephthalate film using urethane-based ink in a gravure printing method, and the other layer is aligned with the printing layer 2 to obtain silica, carbonic acid. The mat coat layer 8 was provided using a urethane mat ink containing a mat agent such as calcium. Next, the printed layer and the surface of the aluminum vapor-deposited polyethylene terephthalate film having a thickness of 12 μm on which the 50 nm aluminum vapor-deposited layer is formed are laminated by a dry lamination method with a urethane adhesive, and the mat coat layer / surface An intermediate laminate of film layer / printing layer / adhesive / aluminum-deposited polyethylene terephthalate was obtained. Thereafter, the intermediate laminate was aged in an environment of 40 ° C. for 2 days, the adhesive was cured, and the intermediate laminate was integrated. Next, a urethane-based anchor agent is applied to the polyethylene terephthalate surface of the aluminum vapor-deposited polyethylene terephthalate film of the cured intermediate laminate, and the coat layer surface of the coated ball having a basis weight of 230 g / m 2 is subjected to corona treatment. A low density polyethylene was hot melt extruded at a thickness of 15 μm and sandwiched to produce a laminate 20. Thereafter, the laminate 20 was defeated and punched to produce a blank, which was made with a sack pasting machine using an acrylic emulsion adhesive to produce a carton having the form shown in FIG.

  The carton 7 produced above had a metallic feeling, had a contrast with a partially provided mat coat layer, and obtained a carton with a high-class display effect.

It is sectional drawing which shows one Embodiment of the laminated body of this invention. It is a perspective view which shows the Example of the carton produced using the laminated body of this invention. It is sectional drawing which shows other embodiment of the laminated body of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Surface film layer 2 Printing layer 3 Metal vapor deposition layer 4 Plastic film layer 5 Metal vapor deposition film layer 6 Paper layer 7 Carton 8 Mat coat layer 10, 20 Laminate

Claims (3)

A metal vapor deposition film layer provided with a metal vapor deposition layer on one side of a surface film layer, a printed layer, a plastic film layer, a polyethylene resin layer formed by hot melt extrusion, and a paper layer are sequentially laminated , and the plastic film layer of the metal vapor deposition film layer A metallic laminate having a side laminated with the polyethylene resin layer formed by hot melt extrusion . The laminate according to claim 1, wherein a mat coat layer is partially provided on the surface of the surface film layer. An intermediate laminate in which a printed layer is provided on one surface of the front film, the printed layer and the metal vapor-deposited surface of the metal vapor-deposited film are laminated via an adhesive, and the surface film layer, the print layer, and the metal vapor-deposited film layer are laminated in sequence. And then curing the adhesive of the intermediate laminate, and then subjecting the film surface of the metal deposited film layer of the intermediate laminate and the paper layer to hot melt extrusion of polyethylene resin to sandwich lamination. A method for producing a metallic laminate.

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