Patent Application
20190084345
The present invention relates to a printing method for a printed matter with decorations and a printed matter.
One method for decorating a printed matter is forming a design surface which is three-dimensional enough for giving visual and tactile sense of protrusions and depressions on the surface of the printed matter and applying metal foil to the protruding portions of the design. A known method of this kind is a decoration method described in Japanese Patent No. 6140859. The decoration method forms a varnish layer on a printed base paper, performs raised printing of a graphic by silk screen printing using ink having good adhesiveness to the varnish layer, and then attaches metal foil only at the graphic portion.
The value of a printed matter formed with protrusions and depression is enhanced by decoration of the protruding portions with metal foil. However, fabrication of such a printed matter requires a number of process steps, i.e., printing on a base paper serving as substrate and the subsequent printing of a varnish layer having releasing effect, printing of raised portions, and pressing of a metal foil layer.
The present invention has been made in view of such circumstances and an object thereof is to provide a decorated printed matter that can be fabricated in a small number of steps.
To attain the object, a printed matter according to the present invention includes:
a sheet or base paper;
a printed layer printed on a surface of the sheet or base paper with ink containing releasing agent;
a graphic formed on a surface of the printed layer with ink or resin that adheres to the printed layer; and
a metal foil applied only on a surface of the graphic via adhesive having a property of not adhering to the printed layer but adhering to the graphic formed of ink or resin.
A medium containing releasing agent may be further applied on the surface of the sheet or base paper entirely.
Furthermore, a hologram film may be affixed on the sheet or base paper.
The printed matter of the present invention enables provision of a printed matter having a metal foil three-dimensionally formed thereon and fabricated in a small number of steps.
Embodiments of the present invention will be now described with reference to the accompanying drawings.
Referring now to
First, using an offset printing machine, a coating of a medium containing releasing agent (release varnish) is formed on an entire surface of a base paper 2 (which is in the form of a sheet in the printing stage and punched into the shape of a card in a later step).
The coating formed of release varnish serves to provide releasing effect for adhesive which is used for bonding of the metal foil 6 as discussed later. This coating will be described as a release layer 4 hereinbelow.
Optionally, decorations such as affixing a hologram film for displaying a pattern or design by causing diffuse reflection of light may be applied to the base paper 2 prior to forming the coating of release varnish.
After forming the release layer 4 as described above, the design shown on the print artwork A is printed using a printing machine. The printing machine is a common four-color offset printing machine. The print artwork A is data that can be processed by the offset printing machine, and printing is performed by four-color printing such as with CMYK or multi-color printing with more than four colors. Further, by mixing releasing agent into printing ink, the printed layer is given releasing effect for the adhesive used for bonding of the metal foil 6 as discussed later. This printed layer will be described as the printed layer containing releasing agent 3 hereinbelow.
As shown in
After forming the printed layer containing releasing agent 3, the print artwork B is used to print a graphic which will form the protruding layer 5 by silk screen printing with ink having good adhesiveness to the printed layer containing releasing agent 3. The protruding layer 5 may be colored or colorless depending on the design for printing and the like. Also, the protruding layer 5 may be formed by printing or application of resin having a similar effect.
Following the foregoing step, the metal foil 6 is pressed onto the surface of the base paper 2, on which the release layer 4, the printed layer containing releasing agent 3, and the protruding layer 5 have been formed.
On the surface of the metal foil 6, a thin adhesive layer 6b has been applied, forming an adhesive surface. This adhesive has a property of not adhering to the release layer 4 and the printed layer containing releasing agent 3 mentioned above and adhering to the protruding layer 5 provided on the printed layer containing releasing agent 3.
Upon pressing a film 6a having the metal foil 6 thereon against the surface of the base paper 2, on which the release layer 4, the printed layer containing releasing agent 3, and the protruding layer 5 have been formed, using a roller or the like and then peeling off the film 6a, the metal foil 6 adheres only to the surface of the protruding layer 5. In this process, since the metal foil 6 does not adhere to the release layer 4 and the printed layer containing releasing agent 3 as mentioned above, the printed layer containing releasing agent 3 remains visible. In this manner, by making the metal foil 6 adhere according to the pattern formed as the protruding layer 5, a gloss pattern is formed as a decorative portion for decorating the printed layer containing releasing agent 3.
As mentioned above, the protruding layer 5 is formed by silk screen printing, allowing formation of an intricate pattern with the metal foil 6.
The surface of the protruding layer 5 in particular is subjected to high pressing stress of the metal foil 6 compared to lower portions other than the protruding layer 5. Thus, a pattern with a contour clearly represented by the metal foil 6 attached to the surface of the protruding layer 5 is formed.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2017-197239 | Sep 2017 | JP | national |
