JP3190389B2 - Laminating sheet and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a three-fold, two-fold,
Sheets for superimposition for producing various cards having concealment information on the superimposed surface to which the sheets are superimposed and bonded in various modes such as cutting and laminating and laminating the sheets, and a method of producing the same About. Here, the various cards refer to postcards, sealed letters, notices, various forms, identification cards, membership cards, and the like.
Further, the concealment information is not necessarily limited to information that needs to be concealed.

[0002]

2. Description of the Related Art Conventionally, in order to print concealment information on a superimposed surface of a superimposing sheet, prior to this printing operation, printing of accompanying items such as display columns is performed on the superimposed surface. ing. However, it is usual to provide an adhesive on the overlapping surface in advance, and when printing is performed on this adhesive, the ink hardly penetrates the sheet by the adhesive, and the ink is hardly dried. There is. Conventionally, in order to forcibly dry the ink, the sheet is generally heated by an appropriate means.

[0003]

For this reason, in the related art, there has been a problem that the adhesive is deteriorated by heating and the sheet is curled. In order to avoid this inconvenience, irradiation with ultraviolet light is also performed. However, according to this method, the adhesive may be deteriorated and the adhesive strength may be reduced. It has the disadvantage that it cannot be fulfilled.

[0004] It is an object of the present invention to provide a sheet for superposition which has solved the above-mentioned disadvantages and a method for producing the same. The present inventor has studied the ultraviolet rays irradiated to cure the ink. As a result, the ultraviolet rays that generate ozone oxidize the pressure-sensitive adhesive with ozone and light energy to reduce the adhesive strength, while the amount of ozone generated It was confirmed that there was a property that the adhesive force of the pressure-sensitive adhesive was not easily reduced by ultraviolet rays having a small amount. In addition, a long wavelength ultraviolet ray of 280 nm to 450 nm is effective for curing the ultraviolet curable ink.

According to an experiment conducted by the present inventor, 8 k
When two lamps with the irradiation amount set to 300 ft / min at the output of w are turned on, the high-pressure mercury lamp having an ozone concentration of 0.009 ppm is 90 to 95% in comparison with the adhesive force before irradiation with ultraviolet light, A high-pressure mercury lamp having a concentration of 0.027 ppm has a concentration of 50 to 55%, and an ozone concentration of 0.026 ppm.
In the metal halide lamp of ppm, the adhesive strength was 50 to 55%. The present invention has been made based on such findings. The UV irradiation lamp is
Broadly speaking, there are two types: standard type and ozoneless type, both of which use quartz glass for the tube.
The ozone-less type mixes quartz glass with impurities,
Adjusted to cut wavelengths below 0 nm, 250
It is adjusted so that a wavelength of less than nm does not exist.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a method for printing or printing on a predetermined portion of a sheet, which does not normally adhere, and which adheres when a certain condition is given. It is possible to provide an adhesive that can be peeled off after bonding, and a predetermined printing is performed on the adhesive with an ultraviolet curable ink, and the ultraviolet curable ink is cured by irradiating ultraviolet light with a small amount of ozone generation. It is a sheet for overlapping. Here, ozone is 100 nm to 210 nm.
Since it is generated at a wavelength of 300 nm, the main wavelength is 365 nm, there is almost no wavelength of 250 nm or less, and 230 nm
If an ozone-less lamp such as a high-pressure mercury lamp that emits ultraviolet light that cannot measure a wavelength of less than m can be used, the generation of ozone can be suppressed to about 0.009 ppm. In the present invention, the ozone-less type ultraviolet lamp that irradiates ultraviolet rays with a small ozone generation amount is compared with the standard type ultraviolet lamp, and the lamp of the same output has the same energy as the ozone-less type lamp in the wavelength range of 200 nm to 250 nm. 1/1 of standard type
6, and the energy ratio of the ozoneless type and the standard type in the wavelength range of 250 nm to 300 nm is 90 times or more that of the ozoneless type at the wavelength of 200 nm to 250 nm.
Even in the range of 50 nm, both the ozone-less type and the standard type are 90 times or more as described above. Moreover, in the ozoneless type, the wavelength is 200 nm to 2 nm.
While the wavelength at 30 nm cannot be measured, the standard type has 3 to 5 times the energy of the ozoneless type wavelength at 200 to 250 nm at the same wavelength. Therefore, the ozoneless type lamp is a lamp that emits ultraviolet light having almost no wavelength of 250 nm or less, while the standard type lamp emits less light at a wavelength of 250 nm or less. It is extremely large compared to.

Further, according to the method for producing a sheet for superposition according to the present invention, printing or printing can be performed on a predetermined portion of the sheet, and the sheet is not normally adhered, but can be adhered under given conditions. After the adhesion, without damaging the applied printing or printing, after providing a peelable adhesive, a predetermined printing is performed on the adhesive with an ultraviolet curable ink, and then the ozone generation amount of the ultraviolet curable ink is reduced. By irradiating a small amount of ultraviolet rays and curing, predetermined printing is performed on the adhesive.

[0008]

By printing with an ultraviolet curable ink and irradiating with ultraviolet rays that generate a small amount of ozone, the ink is dried and solidified, so that it is not necessary to perform a heat treatment after printing on the adhesive surface, The adhesive does not deteriorate due to deterioration of the agent.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment in the case where a sheet for superimposition to be folded into a postcard will be described with reference to the accompanying drawings.

Here, FIG. 1 is a schematic view showing an example of an apparatus for producing a superimposed sheet according to the present invention, and FIG. 2 is a method of printing concealment information on the produced continuous superimposed sheet. FIG. 3 is a schematic view showing an example of an apparatus for folding, FIG. 3 is a schematic view showing an example of an apparatus for forming a folded postcard by converting a continuous sheet for lamination into a unit sheet, and FIG. FIG. 5 is a schematic plan view showing a superimposed surface side in the process, FIG. 5 is a schematic plan view showing a state in which concealment information is displayed on the superposed surface of the superimposing sheet, and FIG. 6 is a schematic diagram showing a created postcard. FIG.

First, a postcard sheet 1 as a superimposing sheet for producing a postcard according to the present embodiment based on FIG.
The configuration of the continuous sheet 1 that becomes 0 will be described. In the continuous sheet 1, an address is written on the back side of FIG. 4 when creating a postcard, and the front side (overlapping side) is provided with a concealment information writing section by printing, which will be described later, and this postcard. A large number of unit sheets 1a each consisting of a postcard lower sheet piece 3 that is folded and bonded to the upper sheet piece 2 from the folding perforation 4 are connected via a folding / cutting perforation 5.
Further, on both end portions of the continuous sheet 1, this is used as a continuous sheet, and the concealment information entry section is printed while transferring in a predetermined direction, an adhesive is applied, and the concealment information entry section is used. A marginal portion 7 provided with a marginal hole 6 is provided at a boundary of a cutting perforation 8 so that various operations such as printing desired concealment information by a printer connected to a computer (not shown) can be performed. ing. The left side shows the continuous sheet 1 and the state in the middle of the transition from the continuous sheet 1 to the postcard sheet 10, and the right side shows the state after the folding / cutting perforation 5a in FIG. ing.

Next, a method of producing the postcard sheet 1 according to the present invention by applying the adhesive, printing with ultraviolet curable ink, and irradiating ultraviolet rays on the continuous sheet 1 described above is shown in FIG. And FIG.

As shown in FIG. 1, the roll-shaped continuous sheet 1 is transported rightward in FIG. 1 with its marginal hole 6 engaged with the pin of the tractor 11, and is sequentially disposed in this transport process. Processing is performed by the conventionally known adhesive application device 12, printing device 13, and ultraviolet irradiation device 14 that have been used. The marginal hole 6, the folding perforation 4, the folding / cutting perforation 5, and the cutting perforation 8 may be processed after the adhesive is applied or printed, or after the ultraviolet irradiation.
In this case, the transfer to the adhesive application device 12 may be performed by a roller.

The adhesive 15 applied to the entire surface of the sheet 1 or the portion other than the marginal portion 7 by the adhesive applying device 12 can be printed or printed, and is usually not adhered, and is not fixed. Can be adhered, and after adhesion, any adhesive that can be peeled off without damaging the printed or printed image may be used. What mix | blends the fine particle filler which shows incompatibility with this adhesive base to this adhesive base is suitable. In the case of a pressure-sensitive adhesive, it is 50 kg or more, preferably 8 kg / cm ^2.
What adhere | attaches with the pressure of 0 kg or more is good.

The adhesive base may be a conventional pressure-sensitive adhesive which has been conventionally used. In particular, a natural rubber obtained by graft copolymerizing styrene and methyl methacrylate on natural rubber is used. Latex is preferred in terms of blocking resistance, heat resistance, abrasion resistance and the like.

On the other hand, as the finely divided filler, those having a low affinity for the adhesive base, for example, zinc oxide, titanium oxide, calcium carbonate, kaolin, activated clay, spherical alumina, wheat starch, silica, glass Powder, shirasu balloon and the like are used. These materials are
A single material or a combination of two or more materials may be used, but a combination of silica and another appropriate filler is particularly preferable. Further, when two or more kinds having different particle diameters are combined, the adhesive-coated surface can be easily formed in an uneven shape, so that the peeling performance is improved. Addition of silica has the advantage that the coating of the adhesive can be reinforced and the porosity of the adhesive makes it easier for the adhesive to adhere to the surface, so that the adhesive force and the peeling force can be easily adjusted. Further, even when printing is performed by a printer using silicone oil in a non-impact printer system, the silica absorbs the silicone oil, so that the adhesive does not become stuck by the silicone oil.
In addition, the average particle diameter of the fine particulate filler is 10 μm to 3 μm.
The range of 0 μm, preferably 1 μm to 20 μm, and more preferably 2 μm to 15 μm is suitable.

The above-mentioned fine-grained filler is an adhesive base 1
20 to 400 parts by weight, preferably 30 to 300 parts by weight, and most preferably 4 to 100 parts by weight of the fine particulate filler.
It is desirable to mix in a ratio of 0 to 250 parts by weight. When the compounding ratio of the fine particulate filler is less than the above range, the blocking resistance is inferior, and the adhesive force is too strong, while when the amount is more than the above range, the adhesive force is excessively reduced and easily peeled off. Would.

The continuous sheet 1 (see FIG. 4) on which the adhesive 15 has been applied as described above is cut off once on the production line and transferred to the printing apparatus 13 using another production line, where the adhesive 15 is applied. A concealment information entry field 17 (see FIG. 4) is printed on the top using ultraviolet curing ink 16. Note that this printing step can be performed continuously with the adhesive application step.

Subsequently, the printing surface of the continuous sheet 1 is irradiated with ultraviolet rays by an ultraviolet irradiation device 14 to cure and fix the ultraviolet curable ink 16 by the printing, thereby forming a postcard sheet 10 (FIG. 4). reference). The ultraviolet irradiation device 14 includes a high-pressure mercury lamp 14a that emits ultraviolet light having a main wavelength of 365 nm, which generates a small amount of ozone, and the length of the high-pressure mercury lamp 14a is substantially equal to the width of the postcard 2. They are the same length (see FIG. 4). In addition,
It is ideal to use an ultraviolet irradiation device that does not generate ozone. The use of an ultraviolet irradiation device that generates a small amount of ozone does not adversely affect the adhesive and does not harm the human body. When the perforations 4, 5, 8 and the marginal hole 6 are processed after the irradiation of the ultraviolet rays, the portions to be processed are irradiated with an ultraviolet ray using a metal halide lamp having a wavelength of 250 nm or less.
Since the adhesive 15 in the portion to be processed is oxidized and deteriorated, and the adhesive strength is reduced, there is an advantage that occurrence of blocking can be prevented. Then, as shown in FIG. 1, the postcard sheet 10 is wound up in a roll shape with the printing surface (overlapping surface) facing upward.

Next, the postcard sheet 1 thus created.
A method of creating a postcard from 0 will be described. First, as shown in FIG. 2, the postcard sheet 10 is transported in a predetermined direction by the tractor 21 with the superimposed surface facing up, and in the transporting process, the printer 22 causes the postcard sheet 2 of the postcard sheet 10 to move. In the concealment information entry field 17 of
The concealment information 18 is printed (see FIG. 5). At this time, if the printer 22 is a two-sided printer, the concealment information 18
Is printed on the back side of the postcard piece 2. Next, the concealment information 18 is
Is folded in a zigzag shape at the folding / cutting perforation 5. The destination and the concealment information 18
Does not need to be printed at the same time.
8 may be printed first.

Subsequently, as shown in FIG. 3, the postcard sheet 10 folded in a zigzag shape is transported by the tractor 31, and the cutout perforations 8 on both sides are slitter 32.
And the marginal portions 7 are removed. Further, like the pair of upper and lower low-speed rollers 33, a pair of upper and lower high-speed rollers 3
3, the tension is applied to the postcard sheet 10 and the cutter 35 is connected to each cutting perforation 5
To make the postcard sheet 10 into a unit sheet.

The postcard sheet 10 made into a unit sheet is
The paper is sent to a known folding and bonding apparatus 37 by a pair of upper and lower transfer rollers 36, where the postcard upper sheet 2 and the postcard middle sheet 5 are sent.
Are folded at the folding perforations 4 so that the overlapping surfaces thereof come into contact with each other, and the adhesive 15
Are applied by applying a pressure which is the bonding condition of the above. As a result, the postcard sheet 10 becomes the postcard 20 shown in FIG.
Transported and stored.

The created postcard 20 is in a state where the concealment information 18 cannot be seen from the outside, and if the address is displayed on the postcard 2, the postcard 20 can be mailed in the same manner as a normal postcard. Although not described or illustrated in the above-described creation process, an explanatory sentence for viewing the concealment information 18 is displayed in advance on the back surface of the postcard draft 3. Therefore, the addressee who has received the postcard 20 can see the concealment information 18 if the postcard upper sheet piece 2 and the postcard lower sheet piece 3 are peeled off by applying a certain force or more to make the spread state. At the time of this peeling, since the adhesive force of the adhesive 15 is set so as to be peelable without damaging the printed or printed image, there is no possibility that the concealment information 18 is peeled off and cannot be visually recognized.

The present invention is not limited to the above-described embodiment. For example, the postcard sheet 10 may be folded and adhered in a continuous state, and then cut into unit sheets to form the postcard 20. The postcard sheet 10 may be superimposed in a two-fold state as shown in FIG. 7, a three-fold state in which the postcard sheet 10 is folded in a Z shape as shown in FIG. Each piece of paper may be cut and then overlapped. Further, a plurality of sheets having the same size or different sizes may be stacked separately. The adhesive 15 is not limited to a non-peelable adhesive base mixed with a non-affinity fine-grained filler, and a method of providing the adhesive 15 on a sheet surface includes a sheet. Impregnation in the process of making
It may be one that is exposed on the sheet surface. Further, in order to facilitate the peeling operation, it is also possible to provide a slit, a perforation or a knob for forming a finger hook. In addition to this, the marginal hole 6 and each perforation 4,
When irradiating ultraviolet rays to the portions to be processed 5 and 8 with an ozone generating lamp such as a metal halide lamp, if the irradiation range is set so as to reach the peeling edge, the adhesive force of this portion is reduced. Is much easier. Further, the portion where the adhesive 15 is provided and the overlapping portion are not limited to the entire overlapping surface and the entire sheet, but may be a part thereof. The adhesive in the present invention does not adhere unless certain conditions are imparted, so that even if it is applied to the entire front and back surfaces of the sheet, it does not hinder handling and is convenient. In addition, the present invention can of course be applied to various cards and various forms in addition to postcards. In addition, the concealment information 18 of the present invention is not particularly required to be confidential, but may be, for example, double-page spread advertising information requiring a large print area. In this case, the postcard 20 is opened and the spread is opened. Since the information content is viewed on both sides, the interest of the recipient is attracted, and if it is used as a direct mail or the like, the advertising effect can be further improved.

[0025]

As is clear from the above description,
According to the present invention, printing is performed using an ultraviolet curable ink on an adhesive that can be printed or printed and that can be peeled after bonding, provided on a sheet surface, and is then irradiated with ultraviolet light that generates a small amount of ozone. To dry and solidify the ink,
There is no need to heat dry after printing, the adhesive strength of the irradiated area does not decrease, the sheet does not curl and handling becomes inconvenient, and subsequent printing and printing are smooth and reliable. In addition, UV curable ink does not need to penetrate into the sheet like other inks for printing, so there is no restriction on the material of the sheet, and not only ordinary paper but also synthetic paper and resin film can be used This has the effect of being

[Brief description of the drawings]

FIG. 1 is a schematic view showing an apparatus for producing a postcard sheet as a sheet for superposition according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a device for printing and folding concealment information on a postcard sheet in a continuous state similarly created.

FIG. 3 is a schematic diagram showing an example of an apparatus that forms a postcard by folding a postcard sheet in a continuous state into unit sheets and folding the card into two.

FIG. 4 is a schematic plan view showing a superposed surface side in the process of producing the postcard sheet.

FIG. 5 is a schematic plan view showing a state in which concealment information is displayed on a superimposed surface of the postcard sheet.

FIG. 6 is a schematic cross-sectional view showing a postcard similarly created.

FIG. 7 is a schematic cross-sectional view showing another embodiment relating to a superimposed state of postcard sheets.

FIG. 8 is a schematic cross-sectional view showing still another embodiment relating to a superimposed state of postcard sheets.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Continuous sheet 2 Postcard upper sheet piece 3 Postcard lower sheet piece 10 Postcard sheet 12 Adhesive coating device 13 Printing device 14 Ultraviolet irradiation device 14a High-pressure mercury lamp 15 Adhesive 16 Ultraviolet curing ink 17 Concealment information entry column 20 Postcard

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B42D 5/00-15/10 G09F 3/00-3/20

Claims (2)

(57) [Claims] Claims 1. A sheet for superimposing a sheet and a sheet on which the sheet is superposed and releasably adhered, and various cards having concealment information on the superimposed surface of the sheet can be formed. Printing or printing is possible,
And, usually does not adhere, it is possible to adhere when given a certain condition is provided, an adhesive that can be peeled after adhesion is provided, and a predetermined printing is performed on this adhesive with ultraviolet curing ink, A sheet for superposition that is cured by irradiating ultraviolet curable ink with ultraviolet light that generates a small amount of ozone. 2. A method for producing a superimposing sheet for producing various cards having concealment information on a superimposed surface on which the sheet and the sheet are superimposed and releasably adhered to each other. It is possible to print or print on a predetermined part, and it is not usually adhered, it can be adhered under certain conditions, and after providing an adhesive that can be peeled off after adhesion, ultraviolet curing on this adhesive By performing predetermined printing with the ink, and then irradiating the ultraviolet-curable ink with ultraviolet rays having a small amount of ozone to be cured,
A method for producing a sheet for superimposition in which predetermined printing is performed on the adhesive.