JPH0542347B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a decorative material having a wood grain pattern. To provide a decorative material with a wood grain pattern exhibiting a so-called concave grain state with the hard parts of winter wood remaining.

[Conventional technology]

For decorative materials with wood grains, [] A wood grain pattern is printed using pearl ink to express the luster of natural wood. The entire surface is coated with a matte paint, and then a glossy paint is printed in a wood grain pattern that matches the wood grain pattern to bring out the luster of natural wood (Special Publications 1977).
-4603 Publication), [] After printing a wood grain pattern on the base material for decorative materials, overlay printing of PVC sol ink is applied on the winter wood part of this wood grain pattern, and if necessary, the spring part of the wood grain pattern is printed. By forming a matte layer on the wood part with pine ink, it is made into a decorative material with undulating wood grain (Japanese Unexamined Patent Publication No. 56-5786,
JP-A-56-5787, JP-A-56-5788)
etc. exist.

[Problem that the invention seeks to solve]

By the way, among the above-mentioned decorative materials, the decorative materials explained in [ ] and [ ] not only do not provide a tactile three-dimensional effect, but also have flat polished parts that aim for a three-dimensional effect, so the visual perception is poor. It also lacks a three-dimensional effect, and there is a large difference in feel from the wood grain pattern of natural wood, and the unevenness of the synthetic surface used as a base material for cosmetics makes the three-dimensional effect of the surface of the decorative material difficult. It has the disadvantage of being easily destroyed.
In addition, the decorative material in item [] above, which was proposed to eliminate the above-mentioned drawbacks of the decorative materials in item [] and [] above, includes a step of using PVC-based sol ink during its manufacturing process. Because of this, the drying properties in the process are poor, and the process of gelling the PVC sol ink is necessary, making the manufacturing process complicated. It has disadvantages such as an unnatural state and unnatural transparency.

However, Japanese materials such as cedar, pine, and cypress are polished to remove the soft parts of the spring wood, leaving the hard parts of the winter wood to create a decorative material with a so-called undulating effect. There has not yet been a wood grain decorative material that faithfully reproduces both the protruding and glossy surface conditions, and the recessed and matte surface of the shaved spring wood. This is the current situation.

[Means for solving problems]

The undulating wood grain decorative material of the present invention includes a decorative material base material having a printed wood grain pattern layer on the surface thereof, and a surface of the wood grain printed pattern layer covering the entire surface of the base material. A transparent or translucent overcoat resin layer is formed, and a gravure printing method is used to form a layer on the overcoat resin layer and in an area facing the winter wood portion of the printed pattern layer portion of the wood grain pattern. The winter material part has a built-up printing part made of a thermosetting synthetic resin layer.

In the undulating wood grain decorative material of the present invention having the above structure, the base material for the decorative material may be a general sheet-like material used as this type of base material, such as a paper sheet with a basis weight of about 23 to 300 g. Including pulp board, polyethylene, polypropylene,
Resin sheets such as polyester, various types of wood, plywood, etc. are used.

The woodgrain printed pattern layer on the surface of the base material for decorative materials is usually coated with ink or paint containing vinyl chloride-vinyl acetate copolymer or nitrocellulose as a binder, for example, by roll coating, gravure coating, or bar coating. It is generally formed through a base coat layer formed by coating with a common coating method such as air knife coating.

The printed pattern layer of the wood grain pattern is produced by adding colorants such as dyes and pigments, and in some cases pearl pigments or metal powder pigments to a vehicle made of vinyl chloride-vinyl acetate copolymer or nitrocellulose. death,
Furthermore, if necessary, plasticizers, stabilizers, waxes,
Additives such as grease, desiccants, auxiliary desiccants, curing agents, thickeners, dispersants, fillers, etc. are added, and solvents and
It is formed by printing a woodgrain pattern using a general printing method such as gravure, offset gravure, etc. using ink or paint sufficiently kneaded with a diluent or the like.

The overcoat resin layer that is configured to cover the entire surface of the wood grain printed pattern layer includes a thermosetting resin binder such as a vinyl chloride-vinyl acetate copolymer binder or polyurethane. Transparent ink or paint consisting of the main component, to which extender pigments such as microsilica for matting are added in some cases, various necessary additives are added, and thoroughly kneaded with solvents and diluents. Or one formed by coating with a coating agent capable of forming a translucent resin film using a conventional coating method such as roll coating, gravure coating, bar coating, air knife coating, flow coating, dip coating, or spray coating. It is.

The winter wood part fill-up printing part, which is formed in the area facing the winter wood part in the printed pattern part of the wood grain pattern through the transparent or translucent overcoat resin layer, uses a thermosetting synthetic resin as a vehicle. It is formed using ink or paint using gravure printing means. For example, polyol components such as vinyl chloride polyols, acrylic polyols, polyester polyols, polyether polyols, cellulose polyols, and polyols made of derivatives thereof, and isocyanate components such as tolylene diisocyanate, methylene diisocyanate, xylene diisocyanate, hexamethylene diisocyanate, etc. Acid-curing amino alkyd resin, which is a reaction product obtained by adding an acid catalyst such as para-toluenesulfonic acid to an alkyd resin component such as urethane resin or glyptal resin, which is an addition product, and an amino resin component such as urea resin or melamine resin; Vehicles made of two-component curing resins such as epoxy resins consisting of an epoxy resin component and a polyamine component such as polyamide, ethylenediamine, diethylenetriamine, or a polybasic acid such as phthalic anhydride, or resins made from block polymers of these resins. To,
Extender pigments are mainly used to increase the solid content of inks and paints, such as barite, precipitated barium sulfate, chalk, precipitated calcium carbonate,
Gofun, gypsum, white alumina, clay, talc powder, calcium silicate, precipitated magnesium carbonate, gloss
White, satin white, bentonite, etc., and if necessary, a gloss adjuster or anti-blocking agent such as micro silica or Teflon powder, which is calcined precipitated silica, is added, and coloring made of any dye or pigment is added. agents, bright coloring agents, solvents and diluents, such as ester-based agents such as methyl acetate, ethyl acetate, and butyl acetate, aromatic agents such as toluene and xylene, alcohol-based agents such as methanol, ethanol, and isopropyl alcohol, methyl ethyl ketone,
Inks or paints are used that have been thoroughly kneaded with various ketone solvents such as methyl isobutyl ketone and cyclohexanone. In the case where an inorganic opaque pigment is used as a coloring agent in the ink or paint, it is preferable that this pigment accounts for 2% or less of the total components; Even if you use 10
% or less, and by mixing the colorant, the winter wood part fill-up printing part has both transparency and surface gloss, and the so-called American color that the winter wood part of natural wood embodies. It is adjusted to exhibit color. The glittering coloring agent added as desired is a pearl pigment with a particle size of about 5 to 60μ, which is made by coating the surface of finely powdered mica with titanium oxide or iron oxide and making it into flakes or scales. Metal powder pigments made of metal powders such as bronze powder, aluminum powder, copper powder, etc. are used, but it is preferable that this bright coloring agent is also kept at 10% or less of the total components of the ink or paint.

In addition, typical composition ratios of the ink or paint for forming the above-mentioned winter wood part overlay printing part are as follows: (1) Extender pigment...10 to 50 parts by weight (2) Colorant...0 ~15 parts by weight (3) Glitter color former...0 to 15 parts by weight (4) Solvent...20 to 50 parts by weight, in the case of a urethane vehicle, 15 to 35 parts by weight of the polyol component and the isocyanate component 5～
In the case of an aminoalkyd vehicle, 30 to 60 parts by weight of the vehicle is added; in the case of an epoxy vehicle, 30 to 50 parts by weight of the vehicle are added. can.

The thickness of the printed overlay of the winter material is usually 10~150μ.
By using a multi-stage gravure printing method to realize the gradation of the winter wood part, a wood grain pattern that more closely resembles that of natural wood is created. Ru. This winter material part overlay printing part is usually formed by gravure printing method, for example, the screen line number is 20/
It can be formed by gravure printing using a plate with a high corrosion depth obtained by further etching a plate made using a screen such as a Munsen screen, a grain screen, a spiral screen, a parallel screen, etc. of inch to 100/inch. Preferably, if the corrosion depth of the gravure printing plate is less than 100μ, the build-up effect of the winter material part overlay printed area will be insufficient, while if the corrosion depth exceeds 300μ, the winter material will be sufficiently sharp. Since it is difficult to obtain a printed overlay of the material part, it is optimal to form it with a gravure printing plate with a corrosion depth of about 100 to 300 μm.

Generally, when a deep plate is obtained by etching, there is a close relationship between the shape of the corrosion cells of the plate obtained, printability and the build-up effect obtained. That is, in the corrosion cell of the printing plate,
If the ratio of the cell width to the bank width is 8:1 or more, the pattern obtained with this printing plate will lack sharpness, and if the ratio of the cell width to the bank width is 1:1 or less, the pattern obtained will lack sharpness. Since the handle will have a low build-up feel, it is preferable to use one in which the ratio of the cell opening to the bank width is within the range of 1:1 to 8:1. Furthermore, in the corrosion cells of the printing plate, if the ratio of the cell width to the depth is 5:1 or more, the ink transferability during the printing process is good, but the transferred ink tends to flow; If the ratio of the cell width to the depth is less than 1:1, the ink transferability during the printing process tends to be poor, so the ratio of the cell width to the depth is 1:1.
Preferably, a ratio within the range of 5:1 is used.

In the undulating wood grain decorative material of the present invention, in order to create a gloss matte feeling between the winter wood part of the wood grain pattern, the overcoat resin layer is formed in the area facing the spring wood part of the printed pattern layer part of the wood grain pattern. The spring material part printing part exhibiting a matte tone and configured as necessary on the top is made of a binder component made of vinyl chloride-vinyl acetate copolymer or a thermosetting resin such as polyurethane resin. Extender pigments such as microsilica for matting, coloring pigments added as necessary, plasticizers, waxes, slip agents, greases, desiccants, thickeners, dispersants,
It is made of ink or paint that has been thoroughly kneaded with the addition of solvents and diluents.

〔Example〕

Hereinafter, the specific structure of the undulating wood grain decorative material of the present invention will be explained based on drawing examples.

Example 1 The zigzag-like wood grain decorative material, which is an example of the present invention and is indicated by the reference numeral 10 in FIG. 1, has a basis weight of 24 g/
cm ² thin paper [manufactured by Sanko Paper Co., Ltd.: (brown) printing paper]
A base material 11 for decorative materials, a base coat layer 12 formed on the entire surface of one side of the base material 11, and a winter material portion 1 formed on the base coat layer 12.
2 and the spring wood portion 14 and the printed pattern layer portion 15 of the wood grain pattern.
, a translucent overcoat resin layer 16 formed to cover the entire surface of the printed pattern layer portion 15 having the wood grain pattern; It consists of a winter material part fill-up printed part 17 made of a thermosetting synthetic resin layer formed by gravure printing means in an area facing the winter material part 13 in the pattern layer part.

In the undulating wood grain decorative material 10, the base coat layer 12 is made by applying an ink (manufactured by Moroboshi Ink Co., Ltd.: MA White) containing a binder made of nitrocellulose resin and a titanium oxide pigment using a gravure printing method. It is formed by printing on the entire surface of one side of the base material 11.

The printed pattern layer part 15 having a wood grain pattern, which is composed of the winter wood part 13 and the spring wood part 14, is made of a colored ink using nitrocellulose resin as a binder (Showa Ink Co., Ltd.).
It was formed by gravure printing.

In addition, the overcoat resin layer indicated by reference numeral 16 is a gloss-adjusting transparent ink [Showa Ink Co., Ltd. Manufactured by Co., Ltd.: STA
It is formed by coating the entire surface with urethane OP varnish] using a gravure printing method.

Furthermore, the printed overlay of the winter material part, which is made of a thermosetting synthetic resin layer and is indicated by reference numeral 17, is printed with a corrosion depth of 150μ using a thermosetting ink having the following composition.
The ratio of the cell frontage of the corrosion cell to the bank width is 4:1,
It was formed using a gravure printing plate with a ratio of cell frontage to corrosion depth of 2:1.

Thermosetting ink composition (1) Acrylic polyol...25 parts by weight (2) Tolylene diisocyanate...10 parts by weight (3) Hexamethylene diisocyanate
...10 parts by weight (4) Precipitated barium sulfate ...40 parts by weight (5) Silicone ...2 parts by weight (6) Microsilica ...1 part by weight (7) Ethyl acetate ...20 parts by weight (8) Methyl ethyl ketone ...20 parts by weight (9) Toluene ...10 parts by weight The decorative board obtained by pasting the undulating wood grain decorative material 10 having the above composition on the surface of 4 mm thick plywood is a decorative board. On the surface of the printed pattern layer portion 15 having a wood grain pattern on the surface of 10, there is a difference in gloss between the winter wood portion 13 and the spring wood portion 14, and a pattern is formed on the surface of the winter wood portion 13. The built-up printing part 17 resulted in a high-quality decorative board that realistically expressed three-dimensionality and wood texture.

Example 2 The zigzag-like wood grain decorative material, which is an example of the present invention and is designated by the reference numeral 20 in FIG. 2, has a basis weight of 24 g/
cm ² thin paper [manufactured by Sanko Paper Co., Ltd.: (brown) printing paper]
A base material 21 for decorative materials, a base coat layer 22 formed on the entire surface of one side of the base material 21, and a winter material portion 2 formed on the base coat layer 22.
3 and a spring wood portion 24, and a translucent overcoat resin layer formed to cover the entire surface of the printed wood grain layer 25. 26, and a thermosetting synthetic resin layer formed by gravure printing means on the overcoat resin layer 26 and in the area facing the winter wood portion 23 in the wood grain printed pattern layer portion 25. Winter material part overlay printing part 27
and on the overcoat resin layer 26, and
It consists of a spring material part 24 in the printed pattern layer part 25 of the above-mentioned wood grain pattern and a spring material part pattern printed part 28 formed in an opposing area.

In the tingling-like wood grain decorative material 20, each of the base coat layer 22, the printed pattern layer part 25 of the wood grain pattern consisting of the winter wood part 23 and the spring wood part 24, and the overcoat resin layer 26 is made of the tingling pattern in Example 1. Base coat layer 1 of wood grain decorative material 10
2. The printed pattern layer portion 15 having a wood grain pattern and the overcoat resin layer 16 are formed by the same method.

The winter material part built-up printing part 27 is a first winter material part formed on the overcoat resin layer 26 and on the entire surface of the area of the printed pattern layer part 25 facing the winter material part 23. Overlay printing part 29, a second winter material part formed on the first winter material part overlay printing part 29 and in an area facing a part of the winter material part 23 in the printed pattern layer part 25. Each winter material part build-up printing part 30 is a multi-stage printing plate using a thermosetting ink having the following composition and a gravure printing plate having the following conditions. It is formed by overlay printing.

Thermosetting ink composition for the first winter material overlay printing section 29 (1) Acrylic polyol...40 parts by weight (2) Tolylene diisocyanate...10 parts by weight (3) Hexamethylene diisocyanate
...10 parts by weight (4) Precipitated barium sulfate ...30 parts by weight (5) Pearl pigment ...5 parts by weight (6) Silicone ...2 parts by weight (7) Microsilica ...1 part by weight (8) Acetic acid Ethyl...20 parts by weight (9) Methyl ethyl ketone...20 parts by weight (10) Toluene...10 parts by weight Gravure printing plate corrosion depth...100μ Cell width/bank width = 4 Cell width/depth = 2.5 Second winter material Thermosetting ink composition for the overlay printing area 30 (1) Polyester polyol...25 parts by weight (2) Tolylene diisocyanate...10 parts by weight (3) Hexamethylene diisocyanate
...5 parts by weight (4) Aluminum hydroxide ...35 parts by weight (5) Polyazo pigment (red) ...1 part by weight (6) Disazo pigment (yellow) ...1 part by weight (7) Silicone ...2 parts by weight Part (8) Microsilica...1 part by weight (9) Ethyl acetate...20 parts by weight (10) Methyl ethyl ketone...20 parts by weight Gravure printing plate corrosion depth...200μ Cell width/bank width=5 Cell width/depth= 1.25 Furthermore, the spring material part printing part 28 contains a binder consisting of acrylic polyol and isocyanate, 12 parts by weight of microsilica (matting agent), and 5 parts by weight of titanium dioxide.
Matsuto ink [Showa Ink Co., Ltd.] containing parts by weight
After the above-mentioned winter material part fill-up printing part 27 was formed, it was formed by gravure printing means using a material manufactured by GM White.

The decorative board obtained by pasting the undulating wood grain decorative material 20 having the above-described structure on the surface of a 4 mm thick plywood has a printed pattern layer portion 25 of the wood grain pattern on the surface of the decorative material 20. , there is a clear difference in the gloss of the surface parts between the winter wood part 23 and the spring wood part 24, and due to the pattern fill-up printing part 27 configured on the surface of the winter wood part 23. The three-dimensional effect and wood texture are realistically expressed, and the result is a high-class piece with a hardened shine and a natural amber-colored transparency.

[Operations and effects of the present invention]

As mentioned above, the undulating wood grain decorative material of the present invention has the following features:
In the area facing the winter wood part of the wood grain printed pattern layer formed on the surface of the base material for decorative materials,
A winter material part consisting of a thermosetting synthetic resin layer formed by gravure printing means via a transparent or translucent overcoat resin layer formed to cover the entire surface of the printed pattern layer part. It consists of a structure that includes a pattern overlay printing section.

Therefore, in the undulating wood grain decorative material of the present invention, the transparent or translucent overcoat layer acts as a gloss adjustment layer, and the surface luster achieved by the decorative material is applied to the entire surface of the decorative material. At the same time, this overcoat layer makes the winter material look bulky and improves the quality, and at the same time, this overcoat layer, together with the structure of the winter material overlay printing part formed on the surface of the layer, reduces the winter material on the surface of the decorative material. This shows a difference in gloss between the spring wood part and the spring wood part. Therefore, it is preferable that the glossiness of this overcoat layer is adjusted to be lower than the glossiness of the winter material part fill-up printed part.

Thus, the undulating wood grain decorative material of the present invention not only has a rich three-dimensional effect visually, but also has a three-dimensional effect to the touch, and there is a difference in gloss between the winter wood part and the spring wood part. Because it realistically expresses the condition of the polished and polished winter wood part and the shaved and matte spring wood part, it is difficult to express with conventional decorative materials. wood texture,
It acts and works as a decorative material with a realistic feel and high decorative effect, and can be used as ceiling material, wall material,
It has a wide range of uses as a decorative material in various fields such as flooring materials, furniture, and surface materials for cabinets for light electrical equipment, and can also be used as a decorative material with Western wood grain such as WN, teak, and rosewood.

Furthermore, since the undulating wood grain decorative material of the present invention can be continuously rolled up in the manufacturing process, the rolled-up sheet-like decorative material can be unwound and continuously made into a base for decorative plywood. Since it can be attached to a surface, it also has the effect of providing good handling and workability.

[Brief explanation of the drawing]

FIGS. 1 and 2 are cross-sectional views of models showing different examples of the undulating wood grain decorative material of the present invention. 10, 20: Uzukuri-like wood grain decorative material, 11, 2
1: Base material for decorative material, 13, 23: Winter wood part in the printed pattern layer with wood grain pattern, 14, 24: Spring wood part in the printed pattern layer part with wood grain pattern, 15, 25: Print pattern layer with wood grain pattern Part, 16, 26: Transparent or translucent overcoat resin layer, 17, 27:
A winter wood part fill-up printing part is made of a thermosetting synthetic resin layer formed by gravure printing means in an area facing the winter wood part in a printed pattern layer part of a wood grain pattern.

Claims (1)

[Scope of Claims] 1. A printed pattern layer with a wood grain pattern formed on the surface of a base material for a decorative material, and a transparent layer formed to cover the entire surface of the printed pattern layer with a wood grain pattern. Alternatively, a translucent overcoat resin layer and a thermosetting synthetic resin layer formed on the overcoat resin layer using a gravure printing method in an area facing the winter wood portion of the wood grain printed pattern layer portion. An undulating wood grain decorative material comprising a winter wood part and an overlay printed part. 2. The undulating wood grain decorative material according to claim 1, wherein the winter wood part has a gradation created by multi-step overlay printing. 3. The undulating wood grain decorative material according to claim 1 or 2, wherein the winter wood part fill-up printed part is a thermosetting synthetic resin layer containing a coloring agent or a glittering coloring agent. 4. The undulating wood grain decorative material according to claim 1, 2, or 3, wherein the transparent or translucent overcoat resin layer is a matte-like overcoat resin layer. 5 On the overcoat resin layer and in the area facing the spring wood part in the printed pattern layer part of the wood grain pattern,
The serpentine-like wood grain decorative material according to any one of claims 1 to 4, wherein a spring material pattern printed portion exhibiting a pine-like appearance is formed.