JP3343515B2 - Printed matter and manufacturing method thereof - 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 material obtained by folding a base sheet with its information display surface inward and bonding with a peelable adhesive strength, and a method of manufacturing the same.

[0002]

2. Description of the Related Art An information display surface is formed by printing on one surface of a substrate sheet, and the information display surface is folded inward, and the two information display surfaces divided by bending are faced to each other to have a weak adhesive force. A postcard printed matter which has been pseudo-adhered is known. This printed matter for postcards meets the standard, dimensions, weight and other standards of ordinary postcards belonging to the second type of mail, and the attached information transmission surface can be peeled open so that the displayed contents can be viewed. . Therefore, the confidentiality of information is superior to that of a normal postcard, and the amount of transmitted information is large.

Japanese Patent Application Laid-Open No. 1-16692 discloses an information display surface in which information to be transmitted such as characters and images is printed on one surface of a base sheet, and a postal code is entered at a predetermined position on the other surface. Printing a frame, etc., laminating and bonding a transparent film on the information display surface, bending the base sheet with the information display surface inside, and placing a pseudo-adhesive layer between the two facing information display surfaces A normal postcard material pseudo-bonded by crimping is disclosed. In order to produce this ordinary postcard, it is necessary to laminate a transparent film and a pseudo adhesive layer on a base sheet. However, since laminating a film material on the surface of a printed matter is a troublesome process, the productivity of postcards is deteriorated. In addition, if the end of the folded base sheet is completely or almost completely stuck through the pseudo-adhesive layer to open the bonding surface, it is easy to peel off between the base sheet and the transparent film. The display surface may be damaged. For this reason, it was necessary to provide a non-adhesion part which does not interpose a pseudo-adhesion layer in the peripheral part of the bonding surface. Further, since a film material is laminated on the postcard, it is difficult to recycle the used paper.

[0004] As another method, one side of a base sheet is made of U
The information to be transmitted is printed using V (ultraviolet curable) ink to form an information display surface, a postal code entry frame is printed at a predetermined position on the other surface, and a UV adhesive is applied to the information display surface. Then, the applied surface is cured by irradiating ultraviolet rays, and the information display surface where the UV adhesive is cured is bent inward, and the information display surfaces facing each other are pseudo-bonded by bending and thermocompression bonding. Postcards are also known. In general, UV inks are not well compatible with ordinary oil-based inks. For this reason, in this type of postcard material, it is necessary to print the information display surface using UV ink so that the UV adhesive can be uniformly applied to the information display surface. However, UV ink is less versatile, has a shorter pot life, and is more expensive than ordinary oil-based inks.

[0005]

SUMMARY OF THE INVENTION The present invention has been accomplished in view of the above situation, and an object of the present invention is to enable an information display surface to be bonded without using a film material or a pseudo-adhesive layer. Another object of the present invention is to provide a printed material on which an information display surface can be printed with a normal oil-based ink, and a method for manufacturing the same.

[0006]

According to the present invention, a base sheet having an information display surface is bent with the information display surface inside, and halves of the base sheet defined by the bending are overlapped. (A) an acrylic acid-based or methacrylic acid-based polymer, (b) an alkyl or alkenyl carboxylic acid / bisphenol represented by the following formula (1): Diglycidyl ether polycondensate

Embedded image[Wherein, R¹And R^TwoAre each independently hydrogen and carbon number 1
Alkyl of 1 to 3 or 1 to 3 carbon atoms and a part of hydrogen or
R represents an alkyl which is entirely substituted by fluorine; ^3aas well as
R^3bAre each independently hydrogen or an alkyl having 1 to 3 carbon atoms.
And R^4aAnd R^4bEach independently has 1 to 1 carbon atoms
Hydrocarbon having 40 and a double bond or a carboxyl group
Represents an elementary group. ], (C) a poly (meth) acrylate having a radiation polymerizable functional group
A functional monomer or oligomer and (d) the following formula (2):
Polyether polyol / acrylic acid mono represented by
ester

Embedded image [Wherein, R ⁵ and R ⁶ each independently represent hydrogen or alkyl having 1 to 5 carbons, and R ⁷ represents alkylene having 1 to 5 carbons or alkylene having 1 to 5 carbons and having a hydroxyl group. And n represents a natural number of 2 or more. ], Which is bonded with a peelable strength via a cured product of a radiation-curable adhesive containing at least:

Further, according to the present invention, a radiation-curable adhesive comprising at least the above components (a), (b), (c) and (d) on the information display surface of a substrate sheet. Is applied, and the applied adhesive is cured by irradiation with radiation,
After irradiating the radiation, the information display surface is folded inside, the base sheet is bent, and the half pieces of the base sheet defined by the folding are overlapped and pressed, and the information display surfaces are bonded to each other with a peelable strength. Characterized by the fact that
A method for producing the printed matter is also provided.

[0008] The printed matter of the present invention has a wide and highly confidential information display surface. ADVANTAGE OF THE INVENTION According to this invention, the printing surface using normal oil-based ink can be pseudo-bonded with an adhesive. Since it is not necessary to use UV ink, it is versatile and advantageous in cost. Since ordinary oil-based ink is used, the pot life of the ink is longer than that of UV ink.

Further, since it is not necessary to laminate the film material on the printing surface, the productivity is high and the pseudo bonding can be performed to the end of the bonding surface. The finished print is
Because no film material is laminated, recycling is easy.

[0010]

Next, the present invention will be described in more detail with reference to preferred embodiments. FIGS. 1 to 7 illustrate one method for producing a normal postcard corresponding to a printed matter according to the present invention and the structure of the normal postcard produced by such a method. FIG. 1 is a plan view showing one surface side of a base material sheet. The base sheet 1 is made of a printable material such as pulp paper or synthetic paper, and has a size in which two normal postcards are arranged. One side of the one side is a destination entry surface 2, on which a postal code entry frame and characters of "postcard" are printed at predetermined positions. The other side of the same surface constitutes the back surface of the postcard when folded, and is used as a normal message entry surface 3. A notch at the lower corner portion for starting peeling of the pseudo adhesive surface. Part 4
Is formed.

FIG. 2 is a plan view showing the other side of the same base sheet 1. The other side of the base sheet is used as a highly confidential and large-area information display surface 5, for example, information transmitted only to the addressee of a postcard and which is not desired to be known to other people, or A large amount of text and large images are printed on the back of the postcard. On the side of the lower corner of the information display surface 5 where the notch 4 is encountered when the base sheet 1 is bent, the notch 4 is used as a trigger to prompt the user to start peeling. Please ".

The information display surface 5 can be printed using ordinary oil-based ink. After printing information on the information display surface 5, an undercoat agent is applied and dried as necessary to form an undercoat layer 7. The undercoat agent is used as needed to improve the conformity of the radiation-curable adhesive with the printing surface of the oil-based ink and to uniformly apply the radiation-curable adhesive. When printing on an information display surface using an oil-based ink containing a relatively large amount of vegetable oil such as linseed oil or tung oil, preferably in a proportion of 30% by weight or more as a solid content in the ink, Since the radiation-curable adhesive is particularly well adapted, it is not necessary to provide an undercoat layer.

As the undercoat agent, for example, 20 to 25 parts by weight of calcium carbonate, 25 to 30 parts by weight of a rosin-modified phenol resin, 40 to 45 parts by weight of a dry vegetable oil (for example, linseed oil or tung oil), and a high boiling point ( For example, boiling point 28
3 to 8 parts by weight of a petroleum-based solvent (about 0 to 320 ° C.), 2 to 3 parts by weight of a polyethylene-based wax, and 1 part by weight or less of a drier (for example, a solution of naphthenate Co and a solution of Mn naphthenate). What is contained can be suitably used.

Next, a radiation-curable adhesive is applied to the information display surface with or without an undercoat layer. Conventional UV adhesives could not be applied uniformly unless the surface was printed with UV ink. On the contrary,
The radiation-curable adhesive used in the present invention adapts well to a printing surface using an oil-based ink, and can be uniformly applied with or without an undercoat layer.

After the radiation-curable adhesive applied to the information display surface 5 is dried as necessary, the adhesive is cured by irradiating high-energy radiation such as ultraviolet rays or ionizing radiation. Thus, as shown in FIG.
On the information display surface 5 of the base sheet 1, a printing layer 6 of an oil-based ink, an undercoat layer 7, and a cured layer 8 of a radiation-curable adhesive are sequentially laminated.

The radiation-curable adhesive used in the present invention contains at least the following components.

(A) an acrylic acid or methacrylic acid polymer, (b) an alkyl or alkenyl carboxylic acid / bisphenol diglycidyl ether polycondensate represented by the formula (1), and (c) a radiation polymerizable functional group. A polyfunctional monomer or oligomer, and (d) a formula (2)
A polyether polyol / acrylic acid monoester represented by the formula:

The acrylic or methacrylic acid-based polymer may be a homopolymer or a copolymer having an acrylic acid ester and / or a methacrylic acid ester as a main monomer unit, or a polymer obtained by polymerizing these polymers with another functional monomer. The used copolymer or a mixture of polymers containing any one or two or more of the above polymers is used. For example, an acrylate of an alkyl alcohol having 1 to 10 carbon atoms, a methacrylate of the same alcohol,
Homopolymers and copolymers such as vinyl acetate, acrylonitrile, and vinyl ethyl ether can be preferably used. Among these, an alkyl acrylate / alkyl methacrylate copolymer is particularly preferred.

The alkyl or alkenyl carboxylic acid / bisphenol diglycidyl ether polycondensate used in the present invention is represented by the following formula (1).

[0020]

Embedded image

In the above formula, R ¹ and R ² represent hydrogen, alkyl having 1 to 3 carbons or alkyl having 1 to 3 carbons and part or all of the hydrogens are substituted by fluorine. R
¹ and R ² may be the same or different. When R ¹ and R ² are alkyl or fluorinated alkyl, they may be linear or branched. Preferred examples of R ¹ and R ² include methyl and trifluoromethyl (—CF ₃ ).

R^3aAnd R^3bIs hydrogen or C 1-3
Represents alkyl. R^3aAnd R^3bMay be the same
And may be different. R^3aAnd R^3bIs the place of alkyl
In this case, either straight-chain alkyl or branched alkyl
You may. Preferred R^3aAnd R ^3bHydrogen and
Chill can be exemplified.

R ^4a and R ^4b each represent a hydrocarbon group having 1 to 40 carbon atoms and having a double bond or a carboxyl group.
R ^4a and R ^4b may be the same or different. Examples of such a hydrocarbon group include straight-chain or branched alkenyl having a double bond only at the terminal and straight-chain or branched alkyl having a carboxyl group only at the terminal. Preferred examples of R ^4a and R ^4b include vinyl and α-methylvinyl.

Preferred examples of the alkyl or alkenyl carboxylic acid / bisphenol diglycidyl ether polycondensate include bisphenol A diglycidyl ether diacrylate represented by the following formula (3).

[0025]

Embedded image

The polyfunctional monomer or oligomer having a radiation-polymerizable functional group is introduced into the side chain or main chain of the acrylic or methacrylic acid polymer to induce a radiation-polymerizable functional group. As such a polyfunctional monomer or oligomer, a low molecular compound having at least two or more photopolymerizable carbon-carbon double bonds capable of forming a three-dimensional network by irradiation with light in a molecule is widely used. Specifically, 1,1,1-trimethylolpropane triacrylate, trimethylolpropane diacrylate, trimethylolpropane dimethacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, pentaerythritol dimethacrylate, pentaerythritol trimethacrylate, dimethy Pentaerythritol diacrylate, dipentaerythritol triacrylate, dipentaerythritol tetraacrylate, dipentaerythritol pentaacrylate,
Dipentaerythritol dimethacrylate, dipentaerythritol trimethacrylate, dipentaerythritol tetramethacrylate, dipentaerythritol pentamethacrylate and the like can be used alone or in combination. Among these, 1,1,1-trimethylolpropane triacrylate is preferred.

The polyether polyol / acrylic acid monoester used in the present invention is represented by the following formula (2).

[0028]

Embedded image

In the above formula, R^FiveAnd R⁶Is hydrogen or
It represents alkyl having 1 to 5 carbon atoms. R ^FiveAnd R⁶Are the same
Or different. R^FiveAnd R⁶Is al
In the case of a kill, either straight-chain or branched alkyl
It may be. Preferred R^FiveAnd R⁶As the water
Examples thereof include methyl, methyl and ethyl.

R ⁷ represents a linear or branched alkylene having 1 to 5 carbon atoms, and may have a hydroxyl group. Preferred R
Examples of ⁷ include methylene, ethylene, and methyl-1,2-ethanediyl.

N represents a natural number of 2 or more, preferably 2
About 500, more preferably about 5 to 50.

Preferred polyether polyols / acrylic acid monoesters are α- (1-oxo-2-propenyl) -ω-methoxy- represented by the following formula (4).
Poly [oxy (methyl-1,2-ethanediyl)] can be exemplified.

[0033]

Embedded image

The radiation-curable adhesive may contain components other than those described above, for example, a polymerization initiator and a polymerization inhibitor.
As the polymerization initiator, for example, hydroxycyclohexyl phenyl ketone, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzyl diphenyl sulfide, tetramethyl thiuram monosulfide, azobisisobutyronitrile, dibenzyl, diacetyl, β- Chloranthraquinone or the like can be used. Among these, hydroxycyclohexyl phenyl ketone is preferred. As the polymerization inhibitor, methoxyphenol is preferably used.

A radiation-curable adhesive is prepared by dissolving and dispersing each of the above-mentioned components from the solvents used in conventional UV adhesives. Preferred radiation curable adhesives include alkyl acrylate / alkyl methacrylate copolymer, alkyl or alkenyl carboxylic acid of formula (1) / bisphenol diglycidyl ether, 1,1,1-trimethylolpropane triacrylate, formula (1) Each component of 2) polyether polyol / acrylic acid monoester and hydroxycyclohexyl phenyl ketone can be dissolved in ethanol, and if necessary, methoxyphenol can be used.

Next, as shown in FIG. 4, the base material sheet 1 is bent with the information display surface 5 inside, and the half pieces 1a and 1b of the base material sheet defined by the bending are overlapped with each other, and a press machine or the like is used. Then, the information display surfaces 5a and 5b facing each other are bonded together so as to have a peelable adhesive strength. That is, pseudo bonding is performed. The pseudo bonding is usually performed by thermocompression bonding.

Thus, the normal postcard 101 as shown in FIGS. 5 to 7 is completed. Usually postcard 101
The appearance is the same as a general one, and the front side is the destination entry surface 2 as shown in FIG. 5 and the back side is the ordinary message entry surface 3 as shown in FIG. And its dimensions, weight,
In other respects, the standard postcard belonging to the type 2 mail is also satisfied. However, its cross section is shown in FIG.
The base sheet 1 is folded and bonded with the information display surface 5 inside. Then, on the halves 1a and 1b of the base sheet 1, a printed layer 6, an undercoat layer 7, and a cured layer 8 of a radiation-curable adhesive are sequentially laminated and formed, respectively, and the information display surfaces faced each other. Are half-bonded to each other via a cured layer 8 of a radiation-curable adhesive.

The recipient of the normal postcard 101 peels off and opens the pseudo-adhered information display surface 5 by turning over and pulling up a half of the base material sheet from the position of the notch 4 at the lower corner. be able to.

In the present invention, by using a base sheet having three or more bent pieces connected to each other, it is possible to provide a plurality of information display surfaces which are pseudo-adhered in a spreadable manner. 8 to 12 illustrate one method for producing such a normal postcard and the structure of the normal postcard produced by such a method.

FIG. 8 is a plan view showing one surface side of the base sheet 11. The base sheet 11 has three bent pieces 11
a, 11b, and 11c are connected in the horizontal direction, and each bent piece has the size of a normal postcard. On one surface side of the base sheet 11, the bent piece 11a constitutes a destination entry surface 12, and the portions 11b and 11c constitute a first information display surface 15 (1). Of the two lower corners of the first information display surface 15 (1), a notch 14 for starting peeling of the pseudo-adhesion surface is formed at the lower corner on the bent piece 11c side. ,on the other hand,
The notch 1 is provided at the lower corner on the side of the bent piece 11b, that is, at the corner that meets the notch 14 at the time of folding.
The text "Please turn from here" is entered to prompt the start of peeling triggered by No. 4.

FIG. 9 is a plan view showing the other side of the same base sheet 11. On this side, folded piece 1
The portion 1c constitutes a normal message entry surface 13, which is the back of the postcard when folded, and includes bent pieces 11a and 11b.
Constitutes the second information display surface 15 (2).

Information is printed on each of the first information display surface and the second information display surface using an oil-based ink containing a relatively large amount of vegetable oil, a radiation-curable adhesive is applied, and high-energy radiation is applied. And cure. Then, as shown in FIG. 10, the base sheet 11 is bent so that the first information display surface 15 (1) is inside, and the bent pieces 11b and 11b are bent.
c, and the base sheet 11 is folded so that the second information display surface 15 (2) is on the inside, and the folded pieces 11a and 11b are folded and overlapped.

Thereafter, when the folded base sheet 11 is pressed by a press or the like to perform pseudo bonding, a normal postcard 102 as shown in FIG. 11 is completed. Its cross section is shown in FIG.
It is shown as follows. The base material sheet 11 is adhered by being bent twice so that the first information display surface 15 (1) and the second information display surface 15 (2) are inside. On the two information display surfaces 15 (1) and 15 (2), a printing layer 16 of a vegetable oil-based ink and a cured layer 18 of a radiation-curable adhesive are sequentially laminated. Half of the first information display surface 15 (1) is a cured layer 1 of a radiation-curable adhesive.
Similarly, half surfaces of the second information display surfaces 15 (2) are pseudo-bonded via a cured layer 18 of a radiation-curable adhesive.

[0044]

As described above, according to the present invention,
A printing surface using ordinary oil-based ink can be pseudo-bonded with an adhesive. Since there is no need to use UV ink, it is versatile and advantageous in cost. Since ordinary oil-based ink is used, the pot life of the ink is longer than that of UV ink.

Further, since the film material does not need to be laminated on the printing surface, the productivity is high and the pseudo bonding can be performed to the end of the bonding surface. The finished print is
Because no film material is laminated, recycling is easy.

The printed matter of the present invention has a wide and highly confidential information display surface. For example, a postcard for notifying anyone other than the addressee of information that the user does not want to read, and a display amount are provided. It can be suitably used as an ordinary postcard, lottery, etc. for an advertisement having a large size.

[Brief description of the drawings]

FIG. 1 is a view for explaining one method for producing a printed matter according to the present invention.

FIG. 2 is a diagram illustrating a method for producing a printed matter according to the present invention.

FIG. 3 is a diagram illustrating one method for producing a printed matter according to the present invention.

FIG. 4 is a diagram illustrating a method for producing a printed matter according to the present invention.

FIG. 5 is a perspective view showing an upper surface of an example of a printed matter according to the present invention.

FIG. 6 is a perspective view showing a lower surface of an example of a printed matter according to the present invention.

FIG. 7 is a schematic sectional view of a printed matter according to the present invention.

FIG. 8 is a diagram illustrating another method for producing a printed matter according to the present invention.

FIG. 9 is a diagram illustrating another method for producing a printed matter according to the present invention.

FIG. 10 is a diagram illustrating another method for producing a printed matter according to the present invention.

FIG. 11 is a perspective view showing an upper surface of an example of a printed matter according to the present invention.

FIG. 12 is a schematic sectional view of a printed matter according to the present invention.

[Explanation of symbols]

 1, 11: base material sheet 2, 12: address entry surface 3, 13: normal message entry surface 4, 14: cutout portion 5, 15 (1), 15 (2): information display surface 6, 16: Printing layer 7: Undercoat layer 8, 18: Cured layer of radiation-curable resin

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B42D 5/00-15/10 C09J 4/06 C08F 290/06

Claims (7)

(57) [Claims] 1. A substrate sheet having an information display surface,
Bend with the information display side inside, and
The information display surface is obtained by overlapping the halves of the formed base sheet.
Facing each other, the facing information display surfaces
(A) an acrylic acid or methacrylic acid polymer, (b)
Alkyl or alkenyl carboxy represented by the following formula (1)
Bonic acid / bisphenol diglycidyl ether polycondensate[Wherein, R¹And R^TwoAre each independently hydrogen and carbon number 1
Alkyl of 1 to 3 or 1 to 3 carbon atoms and a part of hydrogen or
R represents an alkyl which is entirely substituted by fluorine; ^3aas well as
R^3bAre each independently hydrogen or an alkyl having 1 to 3 carbon atoms.
And R^4aAnd R^4bEach independently has 1 to 1 carbon atoms
Hydrocarbon having 40 and a double bond or a carboxyl group
Represents an elementary group. ], (C) a poly (meth) acrylate having a radiation polymerizable functional group
A functional monomer or oligomer and (d) the following formula (2):
Polyether polyol / acrylic acid mono represented by
Ester [2][Wherein, R^FiveAnd R⁶Are each independently hydrogen or carbon number
R 1 represents alkyl of 1 to 5;⁷Is alk having 1 to 5 carbon atoms
Rene or alkylene having 1 to 5 carbon atoms and having a hydroxyl group
And n represents a natural number of 2 or more. ] At least
Peeling through cured product of radiation curable adhesive
Printed material characterized in that it is bonded with the possible strength. 2. The printed matter according to claim 1, wherein information is printed on said information display surface using oil-based ink. 3. The information display surface is printed with information using an oil-based ink containing 30% by weight or more of vegetable oil as a solid content blending ratio, and the information display surface is coated with the radiation-curable adhesive. The printed matter according to claim 2, wherein the cured product is directly applied. 4. The printed matter according to claim 1, which has a size and a weight within a standard range of a postcard after being folded, and is used as a normal postcard. 5. An information display surface of a base sheet, wherein:
A lylic or methacrylic acid polymer, (b)
Alkyl or alkenyl carboxylic acid represented by (1)
/ Bisphenol diglycidyl ether polycondensate[Wherein, R¹And R^TwoAre each independently hydrogen and carbon number 1
Alkyl of 1 to 3 or 1 to 3 carbon atoms and a part of hydrogen or
R represents an alkyl which is entirely substituted by fluorine; ^3aas well as
R^3bAre each independently hydrogen or an alkyl having 1 to 3 carbon atoms.
And R^4aAnd R^4bEach independently has 1 to 1 carbon atoms
Hydrocarbon having 40 and a double bond or a carboxyl group
Represents an elementary group. ], (C) a poly (meth) acrylate having a radiation polymerizable functional group
A functional monomer or oligomer and (d) the following formula (2):
Polyether polyol / acrylic acid mono represented by
Esters[Wherein, R^FiveAnd R⁶Are each independently hydrogen or carbon number
R 1 represents alkyl of 1 to 5;⁷Is alk having 1 to 5 carbon atoms
Rene or alkylene having 1 to 5 carbon atoms and having a hydroxyl group
And n represents a natural number of 2 or more. ] At least
Apply radiation-curable adhesive containing
The adhesive is irradiated with radiation and cured, and the information is
Bend the base sheet with the information display side inside and bend
Halves of the base sheet defined by
Strength that allows information display surfaces to be separated from each other by pressing
A method for producing printed matter, characterized by laminating by: 6. The method for producing a printed matter according to claim 5, wherein an information display surface is formed by printing information on the surface of the base sheet using an oil-based ink. 7. An information display surface is formed by printing information on the base sheet using an oil-based ink containing 30% by weight or more of vegetable oil as a solid content blending ratio, and then forming the information display surface on the information display surface. The method according to claim 6, wherein the radiation-curable adhesive is directly applied.