JPS6229245Y2 - - Google Patents

Description

[Detailed explanation of the idea]

This invention has a wood grain pattern that gives it a rich wood feel,
Moreover, it relates to a decorative sheet with excellent surface performance. Conventionally, particularly effective methods for harmonizing the printed pattern and embossed pattern of a decorative sheet based on paper such as thin paper include, for example, the matt gloss method, in which a top coat paint is applied and dried after printing, and then the duct parts are printed with ink containing a large amount of extender pigment to create a rough effect, and a method in which a liquid repellent agent such as silicone resin that repels the top coat paint is added to the ink for the duct parts, and only that part is recessed by the repulsion during top coating to create a rough effect. The former is inferior in terms of design because the duct parts to be recessed become convex. The latter is a method in which, in principle, the liquid repellent agent such as silicone seeps onto the surface of the duct ink, which repels the top coat paint to form recesses, but the liquid repellent agent itself does not necessarily seep only onto the ink surface, but seeps out around the printed part, and even downward if the substrate is permeable such as paper.
Therefore, the recesses spread to the areas where there is no ink, making it look unnatural. The longer the time between printing the ducts and topcoating the paint, the more severe the spread becomes, and the sharpness of the unevenness is lost. Furthermore, the liquid-repellent agent penetrates into the paper, and the liquid-repellent effect is lost over time. In addition, since the paint does not adhere to the duct ink, its resistance is significantly inferior, so it is possible to use a thermosetting ink, but the topcoat layer tends to be thin around the duct ink, and its resistance tends to decrease. In addition, if a large amount of matting agent is added to the duct ink to further visually enhance the unevenness effect, the strength of the ink itself and its adhesion to the substrate decrease, and trapping problems often occur during topcoating, and the physical properties tend to be inferior even after the product is made. This device was devised to solve the problems when using liquid-repellent ink on paper as described above. The device will be explained in detail below. In this device, first, a printable paper, usually a thin paper of about 30-60g/m2 or a resin-mixed paper, is used as the base paper ¹ , and after printing 2 of the wood grain pattern other than the vascular area, a transparent solid layer 3 made of a thermosetting resin is provided. Any thermosetting resin can be used, such as acrylic urethane, urethane, amino alkyd, melamine, etc., as long as it has adhesive properties with the ink of the base material or undercoat printing 2, but urethane-based amino alkyd resin is preferable in terms of adhesion with the top coat. Next, while the thermosetting layer is in a semi-cured state, 2-5% of a liquid repellent agent such as silicone resin or fluororesin is added to a thermosetting vehicle such as acrylic urethane, urethane, self-crosslinking acrylic melamine, amino alkyd, etc.
Addition of silica-based extender pigment to resin.
The ducts are printed 4 with a hardening ink colored with a coloring pigment. Then, a top coat resin 5 is applied, and the ducts are repelled by the top coat paint only, forming recesses 6. The top coat resin is urethane, acrylic urethane,
The material may be a hardening material such as acrylic, melamine, acrylic melamine, or aminoalkyd, and may be any material as long as it does not have poor adhesion to the transparent solid layer. The embossed pattern consisting of recesses obtained by this configuration has sharpness, stability, and excellent surface properties due to the following factors. First, a thermosetting transparent solid layer is provided under the printing of the hardening ink, which prevents the hardening ink from penetrating the substrate and prevents the liquid repellent from bleeding out to areas other than the ducts, and the embossed resin becomes sharp due to the effective action of the liquid repellent. Furthermore, even though the top coat resin is thin, the physical properties around the ducts are sufficient due to the support of the transparent solid layer, and the printing of the ducts with the hardening ink itself is hardening and has a solid layer printed, which provides strong adhesion, and
This will help the plant to take root in the solid layer even a little,
The physical properties have also been improved considerably. In addition, a large amount of silica-based extender pigment is added to the hardening ink to retain the liquid repellent, which also provides a matte effect. Next, an example of the present invention will be described. Example: A thin paper of 30 g/ ^m2 was used as the base paper 1, and a wood grain pattern was printed 2 on it using the usual gravure printing method.
Next, apply an acrylic urethane paint to the entire surface with a 60μ solid plate at a coating weight of ^about 3g dry/m2.
It is dried to form a solid layer 3. The vascular areas to be concave are then printed 4 by normal gravure printing with a curable ink of the following composition. Next, 8 g dry/ ^m2 of aminoalkyd paint is applied as a topcoat resin onto the wood grain paper using a gravure printer and dried to obtain a decorative sheet with a realistic feel similar to natural wood. Composition of vascular ink: Polyol 20 parts by weight Silica-based volume pigment 20 parts by weight Solvent 60 parts by weight Isocyanate (tolylene diisocyanate) 20 parts by weight Silicone 3 parts by weight Coloring pigment A small amount A decorative sheet was prepared under conditions other than those of this example as a comparative example, and each item was compared with the examples.

【table】

【table】 [Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a sectional view of the present decorative sheet. 1... Base paper, 2... (design) printing, 3...
(Transparent) solid layer, 4... Printing (using curable ink), 5... Top coat resin, 6... Concave portion.

Claims (1)

[Scope of utility model registration request] A wood grain pattern 2 is printed on the base paper, a transparent solid layer 3 made of a curable resin is provided on top of it, and a conduit section is coated with a curable ink containing a silica-based extender pigment of 70 to 200 PHR and a liquid repellent. is printed 4
The decorative sheet is further characterized in that a top coat resin is formed on the printing 4 of the conduit part without being transferred, and the conduit part is expressed to be concave.