JP3364238B2 - Printed matter having printed layer by ultraviolet curable ink and method for producing the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed matter having a printed layer of an ultraviolet curable ink and a method for producing the same.

[0002]

2. Description of the Related Art In recent years, for notification from financial institutions, government offices, etc., a mail form has been printed in which necessary items have been printed by a printer, etc.
It is widely used that it is folded in three and the peripheral portion is pasted with a pressure-sensitive adhesive, and three or four sides are cut out from the perforations when the bag is opened.

However, since this mail form needs to be cut off from the perimeter of the perforations when the mail form is opened, there is a problem that dust is generated and the effective area of the information recording portion is reduced. In addition, since this mail form is attached only to the peripheral portion, it is treated as a sealed letter according to the current postal law, and even if the size is a postcard size, it could not be mailed as an inexpensive postcard.

In order to solve such a problem, the present applicant has applied a pressure-sensitive adhesive having removability, which comprises styrene, butadiene, rubber or the like as a resin component and microsilica or the like dispersed in water. A mail form formed by coating the surface was previously proposed ( Japanese Patent Laid-Open No. 4-126299, etc.).

In this mail form, necessary information can be recorded on the adhesive coated surface by a printer or the like, and the adhesive force of the pressure-sensitive adhesive to the base material of the mail form is when the mail form is folded and stuck. Of the pressure-sensitive adhesive is larger than the adhesive force at the interface between the pressure-sensitive adhesives, and the bonding force between the characters printed on the recording surface and the adhesive is the adhesive on the non-recording surface side when folded and stuck. Since the adhesive strength between the adhesive and letters is large, it can be peeled off at the adhesive interface between pressure-sensitive adhesives without transfer of letters when opened, and the information printed on the pressure-sensitive adhesive coated surface can be read. There are advantages that are possible.

[0006]

By the way, this type of mail form is preprinted with a common notice or the like addressed to the recipient, which differs depending on the sender of financial institutions, government offices, etc. and the use thereof. May need to be kept. In recent years, UV-curable ink has been widely used as a printing ink for printing such notification texts.

When a notice text or the like is printed with ultraviolet curable ink, it is necessary to irradiate ultraviolet rays after printing in order to cure the ink, but this kind of notice text or the like is printed on an adhesive coated surface. Often done in. However, when ultraviolet rays are irradiated to cure the UV-curable ink layer provided on the side coated with the adhesive, the adhesive deteriorates due to the ultraviolet rays and the adhesive strength decreases, and the mail form is folded to apply the adhesive layer. When the surface is attached, the surface to be attached may not be surely attached.

The present invention has been made in view of the above points,
In a printed matter having a printed layer of UV curable ink such as mail form, it is possible to prevent the adhesive layer from deteriorating due to UV irradiation, and to surely attach when the surface side on which the adhesive layer is formed is attached. An object of the present invention is to provide a printed matter having a printed layer of an ultraviolet curable ink and a method for producing the same.

[0009]

That is, a printed matter having a printed layer of the ultraviolet curable ink of the present invention is an ultraviolet curable type on the surface of a printing substrate provided with a removable adhesive layer containing an ultraviolet absorber. A printing layer made of ink is provided, and the ultraviolet curable ink constituting the printing layer is cured by ultraviolet rays, and the removable pressure-sensitive adhesive layer is pressure-sensitive adhesive.
It is characterized in that it comprises a microcapsule of the agent . Further, the printed matter of the present invention is provided on the surface of the printing substrate.
An ultraviolet absorber layer is provided on the surface of the removable pressure-sensitive adhesive layer,
A printing layer made of an ultraviolet curable ink is provided on the surface of the outer line absorbent layer, and the ultraviolet curable ink constituting the printed layer is cured by irradiation with ultraviolet rays.

The method for producing a printed matter having a printing layer with an ultraviolet curable ink of the present invention is a method for producing a printed layer with an ultraviolet curable ink on the surface of a printing substrate provided with a removable adhesive layer containing an ultraviolet absorber. The method is to cure the UV curable ink by irradiating it with UV light after the
The releasable adhesive layer is a microcapsule of pressure-sensitive adhesive.
It is characterized by consisting of . The method of the present invention, printing
The surface of the removable pressure-sensitive adhesive layer provided on the surface of the base material absorbs UV light.
The present invention is characterized in that an absorbent layer is provided, a printing layer made of an ultraviolet curable ink is provided on the ultraviolet absorbent layer, and then the ultraviolet curable ink is cured by irradiation with ultraviolet rays.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a mail form as an example of a printed matter according to the present invention. The mail form 1 is formed in a continuous form with a plurality of perforations 2, and both end edges are formed. On the side, a tractor pin locking piece 4 having a plurality of holes 3 for locking the tractor pin of the printer is provided via perforations 5.

The left side of each mail form 1 is constructed as an address printing piece 6 provided with an address printing column 6a, and the right side adjacent to the address printing piece 6 is printed with a contact item printing column 7a. The right side portion which is configured as a piece 7 and is adjacent to the communication item printing piece 7 is configured as a concealing piece 8 for concealing the communication item printing column 7a during mailing. Bending perforations 9 are provided between the address printing piece 6 and the contact information printing piece 7 and between the contact printing piece 7 and the concealing piece 8.

The mail form 1 as an example of the printed matter of the present invention has a base material 10 and a base material 1 as shown in FIG.
Removable pressure-sensitive adhesive layer 11 containing an ultraviolet absorber, which is provided on the surface of No. 0, and an address printing field 6a and a contact information printing field printed and formed on the pressure-sensitive adhesive layer 11 with an ultraviolet curable ink. Each of the print layers 6a and 7b of 7a is formed. An adhesive layer 12 is provided on the back side of the address printing 6, and a release sheet 13 is attached to the surface of the adhesive layer 12 to cover the surface of the adhesive layer 12.

As the base material 10, paper, synthetic paper, synthetic resin film, metal foil, etc. can be used, and these can also be appropriately laminated and used.

The pressure-sensitive adhesive forming the removable pressure-sensitive adhesive layer 11 is, for example, Japanese Patent Application Laid-Open No. 4-126299 previously filed by the applicant.
As described in JP-A No. 4-189888 , a pressure-sensitive adhesive in which styrene-butadiene-rubber and microsilica are dispersed in water, and natural rubber and styrene-butadiene- PU as described in JP-A-4-189888. Adhesive main agent consisting of rubber,
A pressure sensitive adhesive or the like containing a resin having a low compatibility with the adhesive main agent can be used. In addition, the adhesive layer 11 is
It is also possible to form the above pressure-sensitive adhesive by microencapsulating and dispersing this to form an emulsion.

In the present invention, the ultraviolet absorber is T
Examples include iO ₂ (titanium oxide), ZnO (zinc oxide), calcium carbonate, salicylate, benzophenone, benzotriazole, and acrylonitrile-based substances.
Applying a mixture of these ultraviolet absorber liquids or powders in an adhesive, or microencapsulating the adhesive,
The surface layer coated with an ultraviolet absorber is applied to form the pressure-sensitive adhesive layer 11. The addition of the ultraviolet absorber is particularly effective in the case of a microencapsulated pressure-sensitive adhesive, and in this case, it is preferable that the surface layer of the microcapsule is almost covered with the ultraviolet absorber. In order to coat the surface layer of the microcapsule of the pressure-sensitive adhesive with the ultraviolet absorber, a method of applying the ultraviolet absorber to the surface layer of the microcapsule of the pressure-sensitive adhesive by an air knife coater or the like and then drying it can be adopted. The content of the ultraviolet absorber in the pressure-sensitive adhesive layer 11 is 10
5 to 400 parts by weight per 0 parts by weight is preferable.

As the ultraviolet curable ink used for printing and forming the printing layers 6b and 7b of the address printing field 6a and the contact information printing field 7a, printing methods (silk printing, offset printing, letterpress printing, flexographic printing, gravure printing) are used. (Printing, etc.) and UV irradiation equipment (discharge lamp method such as arc lamp [mercury discharge lamp, metal halide lamp]), flash lamp method, laser method, electrodeless lamp method (microwave, etc.)
Can be used, generally organic pigments, extender pigments, carbon black, titanium white, metal powder, etc. as a coloring material, polyol acrylate-based, as a prepolymer,
Epoxy acrylate type, urethane acrylate type, polyester acrylate type, alkyd acrylate type, polyether acrylate type, etc.
Examples of the ink include monoacrylate type, diacrylate type and triacrylate type inks.

Each of the printing layers 6b and 7b is preferably formed by a printing method such as silk printing, offset printing, gravure printing, etc., using the above ultraviolet curable ink.

The pressure-sensitive adhesive layer 12 provided on the back surface side of the address printing piece 6 is formed of a pressure-sensitive adhesive having excellent adhesion to the base material 10. This pressure-sensitive adhesive is appropriately selected from conventionally known pressure-sensitive adhesives according to the type of substrate. As the release sheet 13, a sheet having releasability from the pressure-sensitive adhesive layer 12 is used.

FIG. 3 shows a mail form 1 as another embodiment of the present invention. This mail form 1 has an ultraviolet absorbent layer 14 on the surface of a removable adhesive layer 11 provided on the surface of a base material 10. The printing layers 6b and 7b are provided on the surface of the ultraviolet absorber layer 14 with ultraviolet curable ink. As described above, the ultraviolet absorbent layer 1 is formed on the surface of the adhesive layer 11.
In the case where No. 4 is provided, the pressure-sensitive adhesive layer 11 need not contain a UV absorber, but a UV absorber may be further added to the pressure-sensitive adhesive layer 11 if necessary. Adhesive layer 1
When the ultraviolet absorbent layer 14 is provided on the surface of No. 1, the thickness of the ultraviolet absorbent layer 14 is preferably a thickness that does not reduce the adhesive strength of the adhesive layer 11, and is usually 0.
About 1 to 30 μ is preferable.

The mail form 1 shown as an example of the printed matter of the present invention has the removable pressure-sensitive adhesive layer 11 containing an ultraviolet absorbent or the ultraviolet absorbent layer 14 provided on the surface of the removable pressure-sensitive adhesive layer 11. It can be obtained by printing each of the printing layers 6b and 7b on the surface with the ultraviolet curable ink, and then irradiating with ultraviolet rays to cure the ultraviolet curable ink. As described above, as the ultraviolet absorber, an inorganic substance,
Although various kinds of organic substances can be mentioned, it is preferable to use one that is compatible with the wavelength of the ultraviolet ray to be irradiated.

In the mail form 1, an issuer such as a financial institution or a government agency prints data corresponding to a destination in the address print field 6a and the contact information print field 7a by a printer or the like, and then the release sheet 13 is removed. Address printing strip 6
And a perforated line 9 for folding between the contact item print piece 7 and
Also, it can be folded at the perforations 9 for folding between the printed matter 7 and the concealment piece 8 to form a postcard as shown in FIG. 3 and mailed. Since the pressure-sensitive adhesive layer 11 of the mail form 1 of the present invention can be re-peeled, the recipient who receives it can read the data described in the message printing column 7a by peeling the concealing piece 8. it can.

[0024]

Prints, composed of ultraviolet curable ink was allowed cured by ultraviolet light irradiation to the surface side of the pressure-sensitive adhesive layer having a print layer with ultraviolet hardening <br/> type ink of the present invention described above, according to the present invention In addition to having a printing layer, the adhesive strength of the adhesive layer is not deteriorated by the irradiation of ultraviolet rays when the ultraviolet curable ink is cured, and excellent adhesiveness is maintained. Further, according to the method for producing a printed matter of the present invention, after forming a printing layer of an ultraviolet curable ink on the surface of the adhesive layer, it is irradiated with ultraviolet rays to cure the ultraviolet curable ink without degrading the adhesive strength of the adhesive layer. To form a print layer.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mail form as an embodiment of a printed matter of the present invention.

FIG. 2 is a vertical sectional view taken along the line II-II in FIG.

FIG. 3 is a vertical sectional view showing another embodiment of the printed material of the present invention.

FIG. 4 is a perspective view showing a state where a mail form is folded into a postcard.

[Explanation of symbols]

1 mail form 6b, 7b Printing layer made of UV curable ink 11 Removable adhesive layer 14 UV absorber layer

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B42D 5/00-15/10

Claims (4)

(57) [Claims] 1. A UV-curable ink comprising a printing layer comprising a UV-curable ink on the surface of a printing substrate provided with a removable pressure-sensitive adhesive layer containing an UV absorber, and constituting the printing layer. There are cured by ultraviolet radiation, the re
Peelable adhesive layer microencapsulates pressure sensitive adhesive
A printed matter having a printed layer of an ultraviolet curable ink, which is characterized by comprising a thing. 2. A removable pressure-sensitive adhesive provided on the surface of a printing substrate.
An ultraviolet absorber layer is provided on the surface of the layer, and the ultraviolet absorber layer
It has a printed layer of UV curable ink on the surface ,
Also, a printed matter having a print layer of an ultraviolet curable ink, wherein the ultraviolet curable ink constituting the printed layer is cured by irradiation of ultraviolet rays. 3. An ultraviolet curable ink is cured by irradiating with ultraviolet rays after forming a printing layer of an ultraviolet curable ink on the surface of a printing substrate provided with a removable adhesive layer containing an ultraviolet absorber. And the removable pressure-sensitive adhesive layer is
A method for producing a printed matter having a printed layer of an ultraviolet curable ink, comprising a pressure-sensitive adhesive microencapsulated . 4. A removable pressure-sensitive adhesive provided on the surface of a printing substrate.
An ultraviolet-curing method, characterized in that an ultraviolet- absorbing layer is provided on the surface of the layer, a printing layer made of the ultraviolet-curing ink is provided on the ultraviolet-absorbing layer, and then the ultraviolet-curable ink is cured by irradiating ultraviolet rays. The manufacturing method of the printed matter which has a printing layer by a mold ink.