JP2006150643A - Printed matter with perfumed ink - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printed matter with perfumed ink, which can be printed by offset printing or typographic printing and has high aroma retentivity. <P>SOLUTION: This printed matter 1 with perfumed ink is for a paper base material 11. With offset printing ink or typographic printing ink containing perfume-involving microcapsules, a first printing 7 is performed and then, again with the offset ink containing the perfume-involving microcapsules, a second printing 8 with the perfumed ink is applied onto the same portion, or after a filling printing is applied to the paper base material, printing is applied once with the offset printing ink or typographic printing ink containing perfume-involving microcapsules or, after the first printing, a second printing is applied onto the same portion. The preferable particle diameter of the perfume-involving microcapsules is about 4-6 μm. In addition, as the preferable ink for the filling printing, an ultraviolet-curing type ink is employed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a perfume ink print using a perfume-encapsulating microcapsule ink by offset printing or letterpress printing.

  Conventionally, a printed matter obtained by printing perfume ink on a paper substrate has a problem that the perfume is volatilized and the scent is rapidly lost after the printed matter is completed. For this reason, the printed matter is stored in a plastic film bag for the purpose of preventing the scent from scattering, or the printed surface on which the fragrance ink is printed is covered with the plastic film (Patent Document 1), and the periphery of the printed surface is an adhesive. A plastic film is affixed by using (Patent Document 2). As the perfume ink, an ordinary printing ink containing an oily or powdery perfume, or a perfume is microencapsulated and dispersed in the ink for printing.

However, covering and sticking a plastic film increases the number of processes, which is problematic. Moreover, the problem that the perfume ink is absorbed by the paper base material has not been solved. On the other hand, the ink in which the fragrance is microencapsulated has a considerably improved fragrance retention property, but since the particle size of the microcapsule is relatively large, it is generally performed by silk screen printing or gravure printing. .
Patent Document 3 proposes a fragrance ink composition for offset printing in which a fragrance is microencapsulated, but it is necessary to realize a practical fragrance print with more fragrance retention.
Patent Document 4 describes that offset microcapsule ink with an average particle diameter of 5 μm or less is offset printed, but describes that a strong scent cannot be obtained compared to silk screen printing (Patent Document 4). 4, third page left column).

JP-A-6-247074 Japanese Patent Laid-Open No. 8-283639 Japanese Patent Laid-Open No. 5-214283 JP-A-6-255289

However, in the case of silk screen printing, fine printing and high-speed printing are impossible, which causes a problem in productivity. In addition, gravure printing generally has a problem of high plate making costs and high costs.
Therefore, in the present invention, the offset printing ink or letterpress printing ink in which the perfume is finely microencapsulated is used to study the completion of the present invention by researching to complete a perfume print with high fragrance and practicality by offset printing or letterpress printing. Has been reached.

  The first of the gist of the present invention for solving the above-mentioned problems is a printed matter of perfume ink on a paper base material, and after performing the first offset printing using the offset printing ink containing perfume-encapsulating microcapsules, the perfume inclusion again The present invention relates to a printed fragrance ink characterized by using offset ink containing microcapsules and overprinting the same portion by offset printing.

  The second of the gist of the present invention that solves the above problems is a printed product of a fragrance ink on a paper substrate, and after performing a seal print on the paper substrate, an offset printing ink containing a fragrance-encapsulated microcapsule is used. The fragrance ink printed matter is characterized by being offset printed.

  The third of the gist of the present invention for solving the above-mentioned problems is a printed matter of a fragrance ink on a paper substrate, and after performing a seal print on the paper substrate, an offset printing ink containing a fragrance-encapsulated microcapsule is used. After the first offset printing, the perfume ink printed matter is characterized in that the offset ink containing the perfume-encapsulating microcapsules is used again and overprinted on the same part by offset printing.

  The fourth of the gist of the present invention for solving the above-mentioned problems is a printed product of a fragrance ink on a paper substrate, and after performing the first typographic printing using a typographic printing ink containing a fragrance-encapsulated microcapsule, the fragrance inclusion is again included. There is a perfume ink printed matter using a letterpress printing ink containing microcapsules and overprinted by letterpress printing on the same part.

  The fifth of the gist of the present invention for solving the above-mentioned problems is a printed product of a fragrance ink on a paper base material, and after printing on the paper base material, a typographic printing ink containing fragrance-encapsulated microcapsules is used. Fragrance ink printed matter, which is characterized by letterpress printing.

  The sixth of the gist of the present invention for solving the above-mentioned problems is a printed product of a fragrance ink on a paper substrate, and after performing a target printing on the paper substrate, a typographic printing ink containing a fragrance-encapsulated microcapsule is used. After the initial printing, there is a perfume ink printed matter characterized in that the perfume-encapsulating microplate-containing typographic printing ink is used again and overprinted on the same part.

  The perfume ink printed matter of the present invention is printed twice on the same part of a paper base material using printing ink containing perfume-encapsulating microcapsules, or is printed on the paper base material and then contains perfume-encapsulating microcapsules. Since printing is performed using printing ink, thick printing is possible, and a fragrant printed matter can be realized.

The present invention relates to a fragrance ink printed matter, and relates to a technique for effectively printing a printed matter with high fragrance retention on a paper substrate by offset printing or letterpress printing.
Conventionally, such printed matter is printed on a paper base material in one step using a perfume ink. However, offset printing or letterpress printing has a small amount of ink, and perfume ink on a paper base material. As a result, the fragrance was not sufficiently obtained, or the originally recognized fragrance was rapidly evaporated and lost.

Therefore, in the present invention, it is improved so that a sufficient scent is obtained by printing as follows.
FIG. 1 is a fragrance ink printed matter in the first embodiment of the present invention, FIG. 2 is a fragrance ink printed matter in the second embodiment, FIG. 3 is a fragrance ink printed matter in the third embodiment, and FIG. It is a figure which shows a fragrance | flavor ink printed matter.
As shown in FIG. 4, the conventional offset printing or letterpress printing fragrance ink printed matter 10 is changed from the state immediately after printing (FIG. 4A) to the paper base material 11 with the printing 5 using the fragrance ink with time after printing. Since it penetrated (FIG. 4B), there was a problem that the scent was not sufficiently felt.
The same phenomenon was recognized whether the fragrance | flavor ink printed matter used what added the fragrance | flavor directly to the ink varnish as printing ink, and also when using the ink which microencapsulated the fragrance | flavor.

The fragrance ink printed matter 1 in the first embodiment of the present invention may be a microencapsulated fragrance ink for offset printing or letterpress printing (both offset and letterpress printing inks as shown in FIG. 1. ), And is printed twice on the surface of the paper substrate 11. The first perfume ink printing 7 also serves as a seal printing and prevents ink penetration, so that a sufficient ink thickness can be obtained. In this case, after the first perfume ink printing 7 is performed, the same perfume-containing microcapsule offset ink is used again, and the second perfume ink printing 8 is performed on the same portion. The entire fragrance ink printing 5 has a sufficient thickness and high fragrance retention.

  As shown in FIG. 2, the fragrance ink printed matter 2 in the second embodiment is for offset printing or letterpress which is first microencapsulated on the surface of the paper substrate 11 using the sealing ink and then microencapsulated. The perfume ink printing 7 by offset printing or letterpress printing is performed using the perfume ink for printing. In this case, since the perforated printing 6 is performed, permeation of the perfume ink is prevented, and a sufficient perfume ink printed film is obtained. As the seal printing ink, an ultraviolet curable ink is preferable. This is because a cross-linking that is honeyer than that of the oxidation polymerization type can be formed and ink penetration can be prevented.

As shown in FIG. 3, the fragrance ink printed matter 3 according to the third embodiment is obtained by first performing the sealing printing 6 using the sealing ink on the surface of the paper substrate 11 and then micro-encapsulated offset printing or letterpress printing. The first perfume ink printing 7 is performed by using the perfume ink for offset printing or letterpress printing, and then the offset printing or letterpress printing perfume ink containing the same perfume-containing microcapsules is used again for offset printing or The second perfume ink printing 8 is performed by letterpress printing. In this case as well, the entire fragrance ink printing 5 has a sufficient thickness and a high fragrance retention.
In the above, the paper base material 11 is a relatively permeable paper such as high-quality paper, medium-quality paper, paperboard, card paper, carton paper, rough paper, and coated paper.

Next, the perfume-encapsulating ink microencapsulated will be described.
The characteristics required as a perfume-encapsulating microcapsule ink for offset printing or letterpress printing is that, in a printing machine with high printing pressure, good ink transfer to the printing medium is obtained, so the microcapsule particle size is 10 μm or less Preferably, it should be able to be about 4 to 6 μm. In addition, it is necessary that the microcapsules are not destroyed by pressure during ink kneading or printing, and that the perfume in the microcapsules blended in the ink is not extracted into the ink.

  The aromatic component enclosed in the microcapsule can be selected according to the intended use from fruits such as orange, lemon, lime and peach, flowers such as roses and lavender, perfumes such as mint and sandalwood. Usually, the fragrance component is oily or water-alcohol soluble. Specific examples of oily fragrances include phenylethyl alcohol, linalool, jasmine, hexylcinamic aldehyde, α-linemon, α-pinene, bromstyrol, citronellal, corral, terpionol, menthol, cinnamic acid, Etc.

  The wall material of the microcapsule that encloses the fragrance component varies depending on the type of the fragrance component, but in general, gelatin, gum arabic, polyvinyl alcohol, ethyl cellulose, carboxymethyl cellulose, polyurethane, sodium alginate, urea / formaldehyde resin, melamine Any material that can be encapsulated, such as formaldehyde resin, can be used. As the capsule producing means, a conventionally used method such as a coacervation method (US Pat. No. 2,800,498), an in situ method (Japanese Patent Laid-Open No. 51-9079), or an interfacial polymerization method may be used. it can.

  Since the binder used in the perfume ink for offset printing or letterpress printing is preferably oily, the microcapsules that are often produced in an aqueous system require appropriate treatment before being kneaded and dispersed in the oily binder. Generally, the moisture is completely dried by a spray drying method or the like, or the water system is completely replaced with an oil system by a flushing method or the like, or the capsule is dispersed in a binder using a dispersant having a hydrophobic group and a hydrophilic group, Thereafter, a method of completely removing moisture is performed. Any method may be used as long as the capsule particles are not enlarged by secondary aggregation of the microcapsules.

  The solvent should be odorless because of its properties as a perfume ink, but preferably has a solubility in a binder resin or perfume and contributes as a “scenting” component as a perfume. . The solvent is preferably a solvent that does not evaporate in a short time on a printing machine for the purpose of viscosity adjustment, and is a non-aqueous solvent, for example, glycols such as propylene glycol, ethylene glycol, diethylene glycol, ethers such as propylene glycol methyl ether, Examples include esters such as glycerin fatty acid esters. Depending on the printing method, alcohols such as ethanol may be used.

<About sealing ink>
The sealing ink is an ink for suppressing the penetration of the ink into the paper base material. Usually, colorless medium ink is used. The medium ink is an ink composed of a transparent resin and a solvent, and a slight amount of additives may be added.
At present, oxidation polymerization type inks and ultraviolet curable inks are frequently used as offset printing inks or letterpress printing inks. However, as described above, ultraviolet curable inks are applied to paper bases in terms of the sealing effect. This is preferable from the viewpoint of low penetration.

The oxidation polymerization type ink is called oil-based ink, and forms a film by solidification and insolubilization of the vehicle by oxidative polymerization. Dry oil varnish, dry alkyd and the like fall into this category. Cobalt and manganese are added as an oxidation accelerator.
As resin-forming materials for UV curable inks, polyol acrylates, epoxy acrylates, urethane acrylates, polyester acrylates, alkyd acrylates, polyether acrylates, etc. as monomers, monoacrylates as prepolymers or oligomers , Inks using diacrylates, triacrylates, and the like. In the case of a colored ink, an extender pigment, an organic pigment as a coloring material, or the like is added thereto, but when used as a sealing material, it is used as a medium ink without adding a pigment or the like.

Offset using offset microcapsules with a particle size of 4 to 6 μm encapsulating orange scented fragrance and letterpress common ink (“PI Orange Flavor OP Varnish” (UV curable ink) manufactured by Dainippon Ink & Chemicals, Inc.) Using a sheet-fed printing machine, offset sheet-fed printing was performed twice on the same portion of the high-quality paper (64 g / m ² ) surface to obtain a printed material of Example 1 (see FIG. 1). In offset printing, the water width is narrow, so the fountain solution was squeezed to make the ink as thick as possible. The same applies to Examples 2 and 3 below.

  On the same high-quality paper surface as in Example 1, after printing the sealing print 6 with an offset sheet-fed printing press using ultraviolet curable medium ink (epoxy acrylate oligomer), containing the fragrance-encapsulating microcapsules used in Example 1 Using printing ink ("PI Orange Flavor OP Varnish" manufactured by Dainippon Ink & Chemicals, Inc.), offset sheet-fed printing was performed once to obtain a printed matter of Example 2 (see Fig. 2).

  On the same high-quality paper surface as in Example 1, after printing the sealing print 6 with an offset sheet-fed printing press using ultraviolet curable medium ink (epoxy acrylate oligomer), containing the fragrance-encapsulating microcapsules used in Example 1 Using printing ink ("PI Orange Flavor OP Varnish" manufactured by Dainippon Ink & Chemicals, Inc.), offset sheet-fed printing was performed twice on the same part to obtain a printed matter of Example 3 (see Fig. 3). .

Using offset printing in microcapsules with a particle size of 4-6 μm encapsulating orange scented fragrance and letterpress common ink (“PI Orange Flavor OP Varnish” manufactured by Dainippon Ink & Chemicals, Inc.), using a letterpress printing press Then, letterpress sheet printing was performed twice on the same portion of the high-quality paper (64 g / m ² ) to obtain a printed material of Example 4 (see FIG. 1).

  Particle size 4 encapsulating orange-scented fragrance on the same high-quality paper surface as in Example 4 after printing the sealing print 6 with a letterpress printing machine using ultraviolet curable medium ink (epoxy acrylate oligomer). Using -6 μm microcapsule offset and letterpress common ink ("PI Orange Flavor OP Varnish" manufactured by Dainippon Ink & Chemicals, Inc.), a single-press letterpress printing was performed to obtain the printed matter of Example 5 (See FIG. 2).

Particle size 4 encapsulating orange-scented fragrance on the same high-quality paper surface as in Example 4 after printing the sealing print 6 with a letterpress printing machine using ultraviolet curable medium ink (epoxy acrylate oligomer). Using -6 μm microcapsule offset and letterpress common ink ("PI Orange Flavor OP Varnish" manufactured by Dainippon Ink & Chemicals, Inc.), the letterpress printing was performed twice on the same part. A printed matter was obtained (see FIG. 3).
(Comparative Example 1)

On the same high-quality paper surface as in Example 1, an offset containing a microcapsule with a particle size of 4 to 6 μm encapsulating an orange fragrance and a letterpress common ink (“PI Orange Flavor OP Varnish” manufactured by Dainippon Ink & Chemicals, Inc.) The offset printed sheet was printed once and used as a printed matter of Comparative Example 1 (see FIG. 4).
(Comparative Example 2)

  On the same high-quality paper surface as in Example 4, a microcapsule offset with a particle size of 4 to 6 μm encapsulating a fragrance of orange and letterpress common ink (“PI Orange Flavor OP Varnish” manufactured by Dainippon Ink & Chemicals, Inc.) Used, a letterpress printing was performed once, and a printed material of Comparative Example 2 was obtained (see FIG. 4).

  The fragrance ink prints of the present invention obtained in Examples 1 to 6 generate a fragrance when rubbed with a fingertip and maintain the fragrance for a long time, whereas the prints of Comparative Examples 1 and 2 have a fragrance in several days. It was observed to disappear.

It is a figure which shows the fragrance | flavor ink printed matter in 1st Embodiment of this invention. It is a figure which shows the fragrance | flavor ink printed matter in the 2nd Embodiment. It is a figure which shows the fragrance | flavor ink printed matter in the 3rd Embodiment. It is a figure which shows the conventional fragrance | flavor ink printed matter.

Explanation of symbols

1, 2, 3 Perfume ink printed matter 5 Perfume ink printing 6 Seal printing 7 First perfume ink printing 8 Second perfume ink printing 10 Conventional perfume ink printed matter 11 Paper base material

Claims (8)

A perfume ink print on a paper substrate, using offset printing ink containing perfume-encapsulating microcapsules, and then performing the first offset printing, using the offset ink containing perfume-encapsulating microcapsules again, and offset printing on the same part. A perfume ink print, characterized by being overprinted. A perfume ink print on a paper base material, wherein the perfume ink print is obtained by performing offset printing on a paper base material and then performing offset printing using a perfume-encapsulating microcapsule offset printing ink. A printed matter of perfume ink on a paper base material, and after carrying out sealing printing on the paper base material, using offset printing ink containing perfume-encapsulating microcapsules and performing the first offset printing, the perfume inclusion again A perfume ink printed product using offset ink with microcapsules and overprinted by offset printing on the same part. Perfume ink printed on a paper substrate, using letterpress printing ink containing perfume-encapsulated microcapsules, and after performing the first letterpress printing, again using the letterpress printing ink containing perfume-encapsulated microcapsules and letterpress printing on the same part Perfume ink printed matter, characterized by being overprinted with A perfume ink printed matter on a paper base material, wherein the perfume ink printed on the paper base material is subjected to letterpress printing using a letterpress printing ink containing perfume-encapsulating microcapsules. A printed matter of fragrance ink on a paper base material, and after carrying out sealing printing on the paper base material, using the typographic printing ink containing the fragrance-encapsulated microcapsule and performing the first letterpress printing, the perfume inclusion again A printed fragrance ink, wherein a typographic printing ink containing microcapsules is used and overprinted by typographic printing on the same part. The perfume ink printed matter according to any one of claims 1 to 6, wherein the perfume-encapsulating microcapsules have an average particle size of 4 to 6 µm. The perfume ink printed matter according to any one of claims 2, 3, 5, and 6, wherein the ink for sealing printing is an ultraviolet curable medium ink.

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