JP3365951B2 - A film sheet having an ink receiving layer capable of forming an image by a copying technique on one surface of a base film and a sucker layer on the other surface - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides an ink-receiving layer capable of forming a high-resolution / high-density image on one surface of a substrate film by a copying technique, and a physical surface by a printing method on the other surface. A film sheet with a sucker layer attached to
In particular, it can form a color image with a good resolution, though it is soft and does not feel glaring due to electrophotography.
The present invention relates to a film sheet that allows an individual to form a desired color image by a copying technique to make a product such as a mouse pad.

[0002]

2. Description of the Related Art Conventionally, it is known that a coating layer containing a white pigment is formed on the surface of a film in order to impart a function such as printability to the film sheet. The sheet is of such a size that an image that can be put into practical use can be formed by using a conventional advanced printing method. In addition, the image created in this way is not sufficient for diffusing the light, unless it is attached to a glass surface equipped with a backlight for use as a display for POP, signboards, etc. There is an inconvenience that the shape of the light source of the backlight looks thin on the display surface. Therefore, the conventional film sheet can almost satisfy the characteristics such as resolution and image density as a material for forming an image by a printing method for producing a large amount of printed matter, but it does not feel glaring due to an electrophotographic method. However, it was not sufficient as a film sheet capable of obtaining a color image with good resolution. In particular, it was not suitable as a film sheet for forming a display image because of its poor light diffusion. Moreover, the functionality as a dinner sheet or a mouse pad was not fully provided together.

[0003]

Under such a technical situation of the film sheet for image formation, there is a case where only a small amount of image for display may be obtained in an extreme case. . In such a case, there has been a demand for a film sheet capable of forming an image of a quality that can be used for display by a simple copying technique. For example, there is a case where a small amount of advertising billboards, POPs, illuminated billboards, etc. provided in a passageway are immediately desired. In such a case, there has been a demand for a film sheet that can immediately produce a necessary display image by a technique such as a simple copying machine that is familiar to us.

Further, in the development of a film sheet on which an image can be formed by such a simple copying technique, even a so-called personal use product is provided with a differentiated image or pattern, particularly a color image or pattern. I've come to ask for something that has been given. For example, there has been a growing demand for a film sheet that can be made by patterning personal-use daily life products such as dinner sheets and mouse pads by a simple copying technique. It is an object of the present invention to provide a film sheet having a quality that can meet such social needs. In particular, it is an object of the present invention to provide a film sheet that can be made by patterning a personal use life product such as a mouse pad or a dinner sheet by a simple copying technique.

[0005]

In order to solve the above-mentioned problems of the present invention, it is keenly understood how to modify the surface of a film sheet by a copying technique so as to form an image of the desired image quality. As a result of repeated investigations, urethane which is a sphere having an average particle size of 5 to 40 μm on the surface of the base film.
Solidify 15 to 35 wt% of resin beads by ionizing radiation
By using the ink blended in the ink base blended with the component, the thickness of 5μ ~ 1 by the printing method, especially the screen printing method.
It has been found that the formation of a layer of 00 μ results in a film sheet on which an image can be formed by the copying technique of the above problem.

Further, in the above-mentioned study, by mixing the spherical beads in the receiving layer, especially the urethane resin is obtained.
By blending the beads , the surface of the film sheet, even after the desired image is formed on the ink-receiving layer by a copying technique such as electrophotography, has a movement that is easy for a mouse or the like and has an abrasion-resistant surface. It was found that a film sheet which can be obtained and on which a color image having good reproducibility can be formed by a copying technique can be obtained. And by providing the above-mentioned receiving layer, light scattering (diffusibility)
It was found that it was possible to obtain a higher quality display image because the backlight became invisible and the shape of the backlight disappeared. Although there was no difference in shape, it was surprising that the effect of improving the optical properties such as light scattering properties was remarkable when urethane resin beads were used.

Furthermore, by using a printing ink in which a component which is solidified by ionizing radiation is added to the base of the ink containing the urethane resin beads or the like, a film sheet having further improved abrasion resistance can be obtained. If the product is cut into the shape of the product, for example, the size of the mouse pad, the purchaser of the product can obtain the mouse pad with a desired image or pattern by copying means.

In particular, when used as a mouse pad or the like, the mouse pad is used for printing on a surface not provided with an ink receiving layer by a printing method using ink made of a soft and flexible material. If a suction cup layer having a repeating pattern of a cavity structure of any shape having suction cup performance that can be fixed by adsorption so as to be peeled off is formed on the surface of the sheet, the sheet can be temporarily fixed to a desired surface. There is a merit that you can
It has the effect of improving the function of the application of the film sheet such as a mouse pad.

Therefore, the gist of the present invention is to ionize 15 to 35 wt% of urethane resin beads, which are spherical particles having an average particle size of 5 to 40 μm, on one surface of the base film by a printing method.
An ink-receiving layer capable of forming an image by a copying technique having a thickness of 5 μ to 100 μ is formed by using an ink blended with an ink base containing a component that is solidified by radiation, and is printed on the other surface of the base film by a printing method. A film sheet having a sucker layer that can be physically attached.

As used herein, the term "copying technique" means electrophotography, ink jet recording, thermal transfer, etc., in which an image is formed by using toner, electrostatic toner, etc. This is to be distinguished from gravure printing or the like for printing.

[0011]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described with reference to the drawings. In the present invention, as the base film 2, a synthetic resin film such as a polyester film, an acrylic film, a polycarbonate film, a polyolefin film, or a thin metal film can be used. The polyester film is excellent in mechanical strength, dimensional stability, and thermal stability, and the acrylic film is excellent in transparency. Therefore, it is necessary to select the base film to be used in relation to the intended use of the film sheet. Before forming the ink receiving layer, these substrate films may be subjected to a treatment for improving the adhesion of the substrate film to the ink, for example, corona discharge treatment.

The resin used as the base for making the ink composition can be selected in relation to the material used as the base film, eg ink when using a polyester film as the base film. By using a polyester resin as the base resin and a vinyl chloride-vinyl acetate copolymer when an acrylic film is used, a layer in which the base film and the ink receiving layer are strongly bonded can be formed. Also, as the ink base, one that has a good receptivity for image forming ink in relation to copying technology,
For example, since a water-based ink is used in the ink jet recording technology, a water-soluble ink having good acceptability is used, and a heat-fixing toner is used in electrophotography. It is important to select a toner with good acceptability.

If an ink base containing a component which can be solidified or hardened by polymerization, crosslinking, etc. by ionizing radiation such as ultraviolet rays or electron beams is used, the ink receiving layer can be formed relatively easily. Can be easy. Such ink bases include those containing a water-soluble monomer, those containing a water-insoluble monomer or a component capable of crosslinking in the form of a solution or emulsion, and all of them have the ink-receiving layer of the present invention. It can be used to produce an ink composition in obtaining a formed film sheet. Examples of the water-soluble monomer that is solidified or cured by ionizing radiation include (meth) acrylic acid esters of polyhydric alcohols, (meth) acrylic acid esters of N-alkylamino alcohols, polyethylene glycol (meth) acrylic acid esters, and N-alkyls. (Meth) acrylic acid amide, vinyl ether of polyhydric alcohol, etc. can be mentioned. Further, as the water-insoluble monomer, 1,6-
Hexanediol diacrylate, tripropylene glycol diacrylate, neopentyl glycol diacrylate, vinyl caprolactam, 2-ethylhexyl acrylate, and the like.

The beads to be mixed with the ink for forming the ink receiving layer are preferably spherical and have a narrow particle size distribution, such as glass beads, silicone resin, urethane resin,
Resin beads made of nylon, polyolefin, fluororesin or the like can be used. The composition of the beads improves the image forming characteristics of the ink layer surface by the copying technology, but the film sheet on which the ink receiving layer is formed using urethane resin beads has a better mouse movement,
When the mouse is used, the matte surface is less worn and the surface is not scratched, and the image with better color reproducibility can be formed than when beads of other materials are used.

The beads have a particle size of 5 μ-40
μ, preferably 10 μ to 30 μ urethane resin beads are used, and a component that is cured by ionizing radiation is blended
15 to 35% by weight based on the ink base,
The layer formed of the ink can improve image forming characteristics such as resolution, density and color reproducibility of an image formed by a copying technique. If the particle size is less than 10 μm, the image quality of the image formed by the copying technique is not improved, and if it is larger than 40 μm, the light diffusion effect is small, the surface friction is large, and the surface is apt to be scratched. The surface friction is large, and scratches are likely to occur on the surface.

The thickness of the ink receiving layer formed on the surface of the film by the ink is set to 5 μ to 100 μ, preferably 10 μ to 80 μ in order to achieve the object of the present invention. By adjusting the thickness of the layer, light transmittance, diffusivity, image characteristics, etc. are changed. Therefore, it may be appropriately adjusted within the above range depending on what kind of display is used and the intended use. it can.

The ink composition for forming the ink receiving layer has an average particle size of 1 to 2 which improves the receiving property of the ink jet ink without deteriorating the properties of the receiving layer and the formability of the layer.
Natural fiber powder or protein powder of about 0 μm may be added, and components such as white pigments, colorants, and leveling agents that have been conventionally added to inks can be highly resolved and highly processed by the ink receiving layer copying technology. It can be blended within a range that does not deteriorate the characteristics capable of forming a density image.

The sucker layer made of a pattern having a cavity structure of any shape having a function of physically adhering so that it can be fixed by adsorption so that it can be peeled off on a flat surface is, for example, urethane resin, epoxy resin, Ink that can form a cavity structure that exhibits sucker performance by blending a hardener, plasticizer, solvent and other additives into an ink base such as silicone resin or vinyl chloride resin to adjust flexibility and flexibility. It is possible to form a composition, and use this ink composition by a screen printing method to form a structure having a repeating unit of a hollow structure that exhibits sucker performance. Commercially available ink compositions used for such applications include UVQVN-000 medium and UVQVN-704 manufactured by Teikoku Ink Mfg. Co., Ltd.
25 special medium, QVN-000 medium and the like can be mentioned.

FIG. 1 is a front view showing an embodiment of a film sheet having a sucker layer 3 and an ink receiving layer 1 of the present invention, in which an image is formed by a copying ink 4 (toner). FIG. 2 is a back view of the film sheet of the present invention in which the suction cup layer 3 is provided, and FIG.
It is sectional drawing by a cutting line.

[0020]

Examples and Comparative Examples Reference Example A polyester film having a thickness of 188 μ is used as a substrate. On one surface of the film, an ink composition containing the following components as main components is used to form an ink receiving layer. Ink composition beads: 25 g of urethane resin beads with an average particle size of 25μ
(25% by weight in 100% by weight of ink) Ketone-based solvent 10 g Hydrocarbon-based solvent 20 g Polyester-based resin 30 g Titanium pigment 35 g Auxiliary agent (silicone oil, etc.) 5 g Ink receiving layer formation and its characteristics Screen 150 mesh ink receiving layer Thickness of 20 μm Image formation Color image formed by electrophotography Evaluation of formed image Visually, glossiness (glare), softness of image, resolution, and color reproducibility were compared with the original. A subject (evaluation panel) psychologically evaluated each characteristic, and added 3 points for good, 2 points for normal, and 1 point for bad. ◯: Addition point is 11 or more Δ: Addition point is 10 to 8 ×: 7 or less Evaluation results are shown in Table 1.

Reference Example 2 UVQVN-70425 manufactured by Teikoku Ink Mfg. Co., Ltd. was formed on the surface of the substrate used in Reference Example opposite to the surface on which the ink receiving layer was formed.
A sucker layer was formed with the special medium ink composition. The obtained film sheet was formed into a mouse pad, and a color image of a desired landscape was formed on the mouse sheet to obtain a mouse pad. Image formation and evaluation of the formed image were performed in the same manner as in Reference Example. The evaluation results are shown in Table 1. Rollability of mouse: Ease of positioning the pointer and rolling sensation of mouse were evaluated by a panelist by psychological evaluation.
Scratchability of the film sheet surface: The surface scratches when the mouse was rolled 3000 times were visually observed. In each evaluation, ◯: good Δ: normal ×: bad The results are shown in Table 1.

Example 1 A 188μ polyester film is used as a substrate. An ink receiving layer is formed on one surface of the film by using an ink composition containing the following main components. Ink composition Beads: Urethane resin beads having an average particle size of 25 μm 25 g Vinylcaprolactam 22.0 g Tripropylene glycol diacrylate 22.0 g Bifunctional urethane oligomer 30.0 g Acetophenone photoinitiator 8.0 g Titanium pigment 20.0 g Auxiliary agent (silicone oil, etc.) 5.0 g Formation of ink receiving layer and its characteristics Screen 150 mesh used Thickness of ink receiving layer 30μ Cured with an amount of ultraviolet light of 500 mJ / cm ² . further,
A suction cup layer was formed on the surface of the above-mentioned substrate opposite to the surface on which the ink receiving layer was formed, using a UVQVN-70425 special medium ink composition manufactured by Teikoku Ink Mfg. Co., Ltd. The obtained film sheet was formed into a mouse pad, and a color image of a desired landscape was formed on the mouse sheet to obtain a mouse pad. Image formation and evaluation of the formed image were performed in the same manner as in Reference Example. The evaluation results are shown in Table 1. Rollability of mouse: Ease of positioning the pointer and rolling sensation of mouse were evaluated by a panelist by psychological evaluation. Scratchability of the film sheet surface: The surface scratches when the mouse was rolled 3000 times were visually observed. In each evaluation, ◯: good Δ: normal ×: bad The results are shown in Table 1.

Comparative Examples 1 and 2 Except when the particle diameter of the bead compounded in the reference example is set to 2 μ which is smaller than 5 μ (Comparative Example 1) and when the bead diameter is set to 60 μ which is larger than 40 μ (Comparative Example 2 ). Example 1
Was repeated. The evaluation results are shown in Table 1.

[0024]

[Table 1]

[0025]

INDUSTRIAL APPLICABILITY The film sheet having the ink receiving layer and the suction layer according to the present invention has improved image forming characteristics by a copying technique, and a color pattern or the like is formed by the copying technique so that it can be peeled to a desired surface physically. The excellent effect of being able to make a mouse pad or the like that can be fixed to is provided.

[Brief description of drawings]

FIG. 1 is a front view of a film sheet according to an embodiment of the present invention.

FIG. 2 is a back view of the film sheet according to the embodiment of the present invention.

3 is a cross-sectional view taken along the line AA of the film sheet of FIG. 1 according to an embodiment of the present invention.

[Explanation of symbols]

1 Ink receiving layer 2 Base film 3 Sucker layer 4
Copy ink

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-8-176428 (JP, A) JP-A-8-230313 (JP, A) JP-A-9-188546 (JP, A) JP-A-8- 294981 (JP, A) Registered utility model 3045396 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G09F 3/04 B32B 27/00 B41M 5/00 G03G 7/00 G09F 3 / 02

Claims (4)

(57) [Claims] 1. A component for solidifying 15 to 35% by weight of urethane resin beads, which are spherical particles having an average particle size of 5 to 40 μm, on one surface of a base film by a printing method by ionizing radiation.
An ink-receiving layer having a thickness of 5 μm to 100 μm which is capable of forming an image by a copying technique and which is physically adhered to the other surface by a printing method using the ink added to the ink base containing A film sheet characterized by being formed. 2. The film sheet according to claim 1 , wherein a screen printing method is used as a printing method. 3. A film sheet according to any one of claims 1 to 2 film sheet is characterized in that which is cut in the shape of a given application. 4. The film sheet according to claim 3 , wherein the predetermined use is a mouse pad.