JPS6152799B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an undulating wood grain decorative material and a method for producing the same.

One of the finishing treatments for Japanese woods such as cedar, pine, and cypress is the ``Uzukuri'' process, in which they are polished to remove the soft parts of the spring wood, leaving the hard parts of the winter wood raised. Known in the field of processing.

According to the "curling process", a board is obtained in which the winter wood part protrudes and has a glossy surface, and the spring wood part is shaved and becomes concave and matte.
However, until now, there has been no wood grain decorative material that faithfully reproduces the board obtained through this ``swivel'' process.

The conventional manufacturing technology for undulating wood grain decorative materials involves printing wood grain patterns using glossy ink such as pearl ink, thereby producing printed plywood that reproduces the texture of natural wood. The technique is to print a wood grain pattern on a base-treated plywood, coat it with a matte transparent paint, and then use a glossy transparent paint on top to match the wood grain pattern underneath to create a wood grain pattern. The only known technology is to produce printed plywood that reproduces the texture found in natural wood by printing (Special Publication No. 4603, 1983).

However, these known techniques cannot produce a visual three-dimensional effect, cannot produce a tactile three-dimensional effect, and the three-dimensional effect is easily diminished by the unevenness of the plywood.
It has drawbacks such as the flat surface, which makes it easily scratched, and the flat glazed area for a three-dimensional effect, which creates a large difference in effect from real natural wood.

There is also a method of foaming a foamed resin in a state where foaming is partially suppressed using foaming suppressing ink to obtain a three-dimensional decorative board with unevenness.
The cost is high, foaming is uneven, the thickness of the convex parts tends to change during storage after plywood lamination, and the color effect tends to deteriorate when foaming.
It has drawbacks such as poor transparency.

As a result of research on zigzag-like wood grain decorative materials, the present inventor printed a build-up ink coating by a gravure printing method using a gravure printing ink containing vinyl chloride sol as a binder, and then heated it to form a build-up ink coating. By gelling the printing ink of the printing film and polishing the surface, it is possible to form a glossy built-up part, and this technique can be applied to form a built-up printed part of a winter material part. Based on this fact, we have completed the present invention.

That is, the gist of the first invention is, ``A winter wood part that has a base coat layer and a wood grain pattern printed part on a base material in this order, and further has a glossy surface in the area corresponding to the winter wood part of the wood grain pattern printed part. 2. An undulating wood-grain decorative material characterized by having a built-up printing area and a spring wood pattern printing area formed with pine ink in an area corresponding to the spring wood area. ``A base coat layer is formed on the substrate, then a wood grain pattern printing area is formed, and a spring wood part pattern is printed on the area corresponding to the spring wood part of the wood grain pattern printing area by a general printing method using pine ink. After printing the printing part and the area corresponding to the winter material part using a gravure printing ink containing vinyl chloride sol as a binder by a gravure printing method to form a build-up ink film, the whole is heated. A method for producing an undulating wood grain decorative material, which comprises gelling the printing ink in the built-up ink film and polishing the surface to form a built-up printed part of the winter wood part with a glossy surface. It is.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 shows the undulating wood grain decorative material of the present invention, which has a base coat layer 2 and a wood grain pattern printed portion 3 in this order on a base material 1, and these constitute a wood grain pattern. The area corresponding to the winter wood part of the wood grain pattern printing part 3 has a winter wood part fill-up printing part 5 with a glossy surface, and the wood grain pattern printing part 3
A region corresponding to the spring material portion has a spring material portion pattern printing portion 6 formed using pine ink.

FIG. 2 is a plan view of the above-mentioned undulating wood grain decorative material.

Next, the materials and manufacturing method for forming each layer of the undulating wood grain decorative material of the above invention will be explained.

The base material may be paper, a resin film such as polyester, polyphenylene oxide, aromatic polyamide, tetrafluoroethylene resin, polyimide, etc. with good heat resistance, various metal plates or foils, various types of wood or plywood, etc. Can be used.

The base material 1 must be able to withstand high temperatures during heating and drying after printing the thickened portion of the winter material, and must be able to withstand shrinkage, deformation, etc.

The base coat layer 2 is formed by coating the base material with an ink or coating composition containing vinyl chloride/vinyl acetate copolymer as a binder by a conventional coating method such as roll coating, gravure coating, bar coating, or air knife coating. It is coated on top and formed as shown in the third figure.

Next, as shown in Figure 4, a coloring agent such as a dye or pigment is added to the vinyl chloride-vinyl acetate copolymer vehicle on the base coat layer 2, and furthermore, a coloring agent such as a plasticizer, stabilizer, wax/grease, desiccant, etc. is added to the base coat layer 2. Using an ink or coating composition, etc., which is obtained by adding optionally known additives such as auxiliary drying agents, curing agents, thickeners, dispersants, fillers, etc., and sufficiently kneading with solvents, diluents, etc. The woodgrain pattern printed portion 3 is formed by printing using general printing methods such as gravure, offset, and offset gravure.

Transparency is required for the wood grain pattern printed portion 3 for quality reasons, so when adjusting the printing ink for forming the wood grain pattern printed portion, it is desirable to select and use a transparent pigment as the pigment used.

The overlay printing part of the winter material part is a gelatinized overlay printing film using gravure printing ink using vinyl chloride sol as a binder. As shown in Figure 5, the vinyl chloride of the winter wood part is printed on the woodgrain pattern printed part 3 by the gravure printing method using a gravure printing ink with vinyl chloride sol as a binder to a thickness of 50μ to 150μ. A built-up ink coating 4 of sol ink is formed. The overlay printing part of the winter wood part shown above is made of hard gelled vinyl chloride resin, so even when laminated to plywood, the unevenness will not disappear, creating a decorative board with a three-dimensional and realistic feel. However, the thickness will not decrease even if it is subjected to a cumulative load after being laminated to plywood.
Furthermore, no softening or blocking of the ink layer was observed during the process of actual use.

Screen line count 20/inch to 100/i as a gravure printing plate for forming overlay printing parts on winter materials.
The plate is made using screens such as nch line screen, grain screen, spiral screen, parallel screen, etc. After plate making, it is further corroded to a corrosion depth of 150 mm.
It is necessary to use a plate that is higher than μ,
More specifically, it is desirable that the corrosion depth is between 150μ and 400μ. If the depth is less than 150μ, the build-up effect will be insufficient, and if the depth is more than 400μ, it will be difficult to print a sufficiently sharp pattern.

In this way, when using a plate with a high depth, there is an important relationship between the shape of the corrosion cell, printability, and build-up effect, and the ratio of the cell width to the bank width is 1:1 to 4:1. , a gravure printing plate with a cell width to depth ratio of 2:1 to 5:1 is most suitable. If the ratio of the cell width to the bank width is 4:1 or more, the pattern will lack sharpness,
On the other hand, if the ratio is less than 1:1, the feeling of thickening will decrease.
Furthermore, when the ratio of the cell opening to the depth is 5 or more, the ink transferability is good, but the transferred ink tends to flow, and conversely, when the ratio is 2 or less, the ink transferability tends to be insufficient. .

It is necessary to use an ink composition with a high solid content and a low volatile content so that sufficient volume can be maintained even after printing dries for the ink composition used to form the overlay printing part of the winter wood part. The composition is as follows: 1 using vinyl chloride sol as a binder.
The ink compositions illustrated in the composition examples are most suitable.

Vinyl chloride paste resin 100 parts Dioctyl phthalate 60 parts Diaryl phthalate 10 parts Calcium carbonate 10 parts Titanium oxide 30 parts Stabilizer 3 parts The above ink composition may contain a colored pigment, in which case a transparent pigment It is preferable to use By using the above-mentioned ink composition containing a colored pigment, it is possible to form a winter material part overlay printed part having an amber-colored transparency.

In addition, it is also possible to express depth by forming the overlay printing part of the winter wood part in multiple layers.

Furthermore, a spring material part pattern printed part 6 is formed using pine ink in an area corresponding to the spring material part of the wood grain pattern printed part 3.

To form the spring material part printed part 6, pine ink is prepared by adding an extender pigment for matting to a binder such as vinyl chloride-vinyl acetate copolymer, a plasticizer, a slip agent, wax, grease, etc.
An ink composition prepared by optionally adding a desiccant, a thickener, a dispersant, etc. and thoroughly kneading it with a solvent, diluent, etc.
Alternatively, extender pigments for matting are added to a binder such as vinyl chloride-vinyl acetate copolymer, and coloring pigments are added to the binder, and then plasticizers, slip agents, waxes, greases, desiccants, thickeners, and dispersions are added. Use an ink composition that has been sufficiently kneaded with an agent or the like.

In this way, after forming the overlay ink coating 4 of vinyl chloride sol ink for the spring wood part printing part 6 and the winter wood part on the wood grain pattern printing part 3, as shown in FIG. Heat and overlay printing coating 4
The printing ink is gelatinized and the surface is polished to form a winter material part overlay printed part 5 with a glossy surface.

In the undulating wood grain decorative material of the present invention, the base material has a wood grain pattern, and thereon, it has a printed part with a winter wood part with a glossy surface, and a printed part with a matte spring wood part. Because it has a three-dimensional effect visually, it has a three-dimensional effect to the touch, and there is a noticeable difference in gloss between the winter wood part and the spring wood part. The condition of the polished and matte winter wood part and the shaved and matte spring wood part are realistically expressed, and as a result, a decorative effect rich in wood texture and realism that cannot be obtained with conventional decorative materials can be obtained. I can do it.

The above-described undulating wood grain decorative material of the present invention can be effectively used as a decorative material in all fields such as ceiling materials, wall materials, floor materials, furniture, and surface materials for cabinets for light electrical appliances.

Note that the present invention can be applied to western wood grain decorative materials such as WN (walnut), teak, and rosewood.

In addition, in the manufacturing method for manufacturing the undulating wood grain decorative material of the present invention, the manufacturing process from formation of a base coat layer → formation of a wood grain pattern printing area → printing of a spring wood area and overlay printing of a winter wood area is performed. After proceeding in-line, by heating with hot air, the winter wood part with a glossy surface and the spring wood part in a shaved and matte state are realistically expressed.The spring wood part is realistically expressed. It is possible to easily produce a decorative wood grain material with an expressed undulating pattern.

Further, the sheet-shaped decorative material obtained by the manufacturing method of the present invention can be continuously rolled up, and therefore, the rolled-up sheet-shaped decorative material can be unwound and continuously laminated onto plywood. I can do it.

Next, the present invention will be specifically explained with reference to Examples.

Example 1 A base coat layer was formed by printing on the entire surface of 23 g/m ² thin paper by gravure printing using an ink containing vinyl chloride/vinyl acetate copolymer as a binder.

Next, a wood grain pattern was formed on the base coat layer by gravure printing using an ink containing vinyl chloride/vinyl acetate copolymer as a binder.

Next, overlay printing of about 100 μm is applied using gravure printing using gravure ink with vinyl chloride sol as a binder in the area corresponding to the winter part of the wood grain, and overlay printing of vinyl chloride sol ink on each wood part is applied. A film was formed. (The plate has a corrosion depth of 250μ, cell width/bank width = 3, cell width/depth = 3) Next, in the area corresponding to the spring wood part of the wood grain, thermosetting urethane made of acrylic polyol isocyanate is used as a binder. A spring material pattern was formed by printing using a gravure printing method using an ink containing 9% of silica as a matting agent and a colored pigment.

Next, the sheet was heated at 210° C. for 1 minute to gel the overlay ink and to make it matte.

This decorative sheet was then attached to 4 mm thick plywood to produce decorative plywood.

This decorative material has a woodgrain pattern with different luster in the spring wood and winter wood areas, and the buildup in the winter wood areas creates a realistic three-dimensional feel and wood texture.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the undulating wood grain decorative material of the present invention, Fig. 2 is a plan view of the decorative material, and Figs. 3 to 6 are cross sections of the manufacturing process of the undulating wood grain decorative material of the present invention. It is a diagram. DESCRIPTION OF SYMBOLS 1... Base material, 2... Base coat layer, 3... Wood grain pattern printing part, 4... Vinyl chloride sol overlay ink coating, 5... Winter wood part overlay printing part, 6... Spring wood part Printing Department.

Claims (1)

[Scope of Claims] 1. A base coat layer and a wood grain pattern printed area in this order on a base material, and a winter wood part overlay printed part with a glossy surface in an area corresponding to the winter wood part of the wood grain pattern printed part. An undulating wood grain decorative material having a spring wood part printed part formed with pine ink in an area corresponding to the spring wood part. 2. The undulating wood grain decorative material according to claim 1, characterized in that the overlay printed portion of the winter wood part is a gelled overlay printed film formed by gravure printing ink using vinyl chloride sol as a binder. . 3. Form a base coat layer on the base material, then form a wood grain pattern printing area, and print a spring wood pattern on the area corresponding to the spring wood part of the wood grain pattern printing area by a general printing method using pine ink. In addition, the area corresponding to the winter material part is overprinted by a gravure printing method using a gravure printing ink containing vinyl chloride sol as a binder to form an overlay ink film, and then the whole is heated. A method for producing a zigzag wood grain decorative material, which comprises gelling the printing ink in the overlay ink film and polishing the surface to form a winter wood overlay printed area with a glossy surface. 4 When forming the winter material part overlay printing part, the corrosion depth is 150 or more as a gravure printing plate.
4. The method for producing a decorative wood grain material according to claim 3, characterized in that a material having a grain size of 400 microns is used. 5. When forming the printed overlay of the winter material part, as a gravure printing plate, the ratio of the cell width to the bank width is 1 or more and 4 or less, and the ratio of the cell width to the depth is 2 or more and 5 or less. 5. A method for producing a decorative wood grain material with an undulating texture according to claim 3 or 4, wherein