JP4081562B2 - Surface treatment method for wood-like molded products - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a surface treatment method for a wood-like molded product, and more particularly to a surface treatment method for a cellulose-based fine particle and a wood-like molded product.
[0002]
[Prior art]
The present applicant has applied for PCT JP94 / 00351 (International Publication Number: WO94 / 20280) as a technique related to a wood-like molded article. That is, this technology relates to “cellulosic fine particles, wood-like molded products, and wood-like products”, and is obtained by grinding the pulverized powder obtained by pulverizing the cellulose material as a raw material to increase the bulk specific gravity. The outer peripheral surface of the particle is fixed with a surface particle having a smaller diameter and harder than the particle to form a fixed particle. The resin and pigment are mixed and melted in the fixed particle, and then or simultaneously with melting, extrusion. Molded into a desired shape by molding or injection molding. Then, it is possible to provide a method for producing a wood-like product and a wood-like product having a pattern very close to the grain of natural wood on the surface and having a texture such as a touch feeling close to that of natural wood.
[0003]
Furthermore, for general wood plastics including the above technology, wood scrap materials, sawdust, etc., which are usually disposed of by incineration, can be used as the cellulose material to be included in the resin. It is widely applied to various residential parts such as floor boards, stair railings, stair treads, and sash frame interior sides.
[0004]
[Problems to be solved by the invention]
On the other hand, conventionally, a housing component that uses a plywood and a decorative plate and has a grain on the surface has been used. For example, such a flooring material and a floor board material are produced as follows. Plywood formed by laminating and fixing thin plates is laminated so that the directions of the eyes are alternate. Ordinarily, an odd number of thin plates are laminated so that the direction of the grain of both outermost thin plates is the same so that “warp” does not occur. The thickness of the plywood is often about 12 mm to 15 mm, for example.
[0005]
And it forms by sticking to the surface of the upper surface side of the thin board which forms a floor, the decorative board which is a wooden thin single board which exhibits a grain pattern. This decorative board is usually about 0.25 mm thick. And in the floor board material using the above-mentioned conventional plywood, the process of applying the decorative board was indispensable, but the process of applying the decorative board was omitted, and the wood grain pattern on the surface of the floor board material, etc. was desired. There was a request.
[0006]
In this case, when various residential parts are formed using the above wood-like molded products, patterns close to the grain appear on the surface, but the appearance quality of such wood-like molded products is improved. Further improvement has been desired.
Therefore, the problem to be solved by the inventions of claims 1 to 5 is to improve the appearance quality of the surface of a residential part using a wood-like molded product.
[0007]
[Means for Solving the Problems]
[0008]
[0009]
[0010]
[0011]
[0012]
[0013]
[0014]
[0015]
In order to solve such a technical problem, in the invention described in claim 1, a wood-like molded article obtained by mixing and melting a pulverized powder obtained by pulverizing a cellulose material and melting and extruding the resin. And a step of forming a plurality of grooves 21 by embossing the surface of the wood-like molded product 10 with an embossing roller, and a wood having a plurality of grooves 21 formed by the embossing. And a step of applying a plurality of scratches to the surface of the molded product 10 by applying a hairline process using sanding paper .
[0016]
The hairline processing is performed by scratching the surface of the wood-like molded product 10 using sanding paper.
Therefore, in the first aspect of the invention, a plurality of groove portions 21 are formed on the surface of the wood-like molded product 10 by the embossing process using the embossing roller , and the wood-like molded product 10 is formed by these groove portions 21. The wood grain pattern appearing on the surface becomes more three-dimensional, so that the wood grain pattern can be clearly represented as a whole, and the texture of the surface of the wood-like molded product 10 can be made closer to the actual wood feel .
[0017]
Furthermore, in the invention described in claim 1, a plurality of scratches are formed on the surface of the wood-like molded article 10 by the hairline processing using sanding paper , and the wood-like molded article 10 is formed by these scratches. The grain pattern appearing on the surface becomes more three-dimensional, and together with the groove portion 21 formed by the embossing, the grain pattern can be expressed more clearly as a whole, and the texture of the surface of the wood-like molded article 10 Can be made closer to the feeling of an actual tree .
[0018]
As a result, in the invention according to the first aspect, the appearance quality of the wood-like molded product 10 can be further improved .
[0019]
[0020]
[0021]
[0022]
[0023]
[0024]
[0025]
In the invention according to claim 2, there is provided a surface treatment method for a wood-like molded article obtained by mixing and melting a resin and a pigment in a pulverized powder obtained by pulverizing a cellulose material, wherein the woody molded article is a surface treatment method. The surface of the molded article 10 is embossed with an embossing roller to form a plurality of grooves 21, and the surface of the woody molded article 10 is subjected to hairline processing using sanding paper to make a plurality of scratches. The wood-like molded product 10 is colored.
[0026]
Therefore, in the invention described in claim 2, a plurality of groove portions 21 are formed on the surface of the wood-like molded product 10 by the embossing treatment using the embossing roller , and the wood-like molded product 10 is formed by these groove portions 21. The wood grain pattern appearing on the surface becomes more three-dimensional, so that the wood grain pattern can be clearly represented as a whole, and the texture of the surface of the wood-like molded product 10 can be made closer to the actual wood feel .
[0027]
Furthermore, in the invention of claim 2, a plurality of scratches are formed on the surface of the wood-like molded product 10 by the hairline processing using sanding paper, and together with the groove portion 21, these scratches are formed. The wood grain pattern appearing on the surface of the wood-like molded article 10 due to scratches becomes more three-dimensional, so that the wood grain pattern can be clearly expressed as a whole, and the texture of the surface of the wood-like molded article 10 can be made more realistic. It can be close to the senses .
[0028]
Furthermore , in the invention according to claim 2, since the woody molded product 10 is colored, the texture of the surface of the woody molded product 10 can be made closer to the actual wood feel .
As a result, in the invention described in claim 2, the appearance quality of the wood-like molded product 10 can be improved .
[0029]
[0030]
[0031]
[0032]
The invention according to claim 3 is a surface treatment method for a wood-like molded article obtained by mixing and melting a resin and a pigment in a pulverized powder obtained by pulverizing a cellulose material, wherein the woody molded article is a surface treatment method. The surface of the molded product is embossed with an embossing roller to form a plurality of grooves 21, and the surface of the wood-like molded product 10 is subjected to hairline processing using sanding paper to make a plurality of scratches , The surface of the wood-like molded product 10 is painted.
[0033]
Therefore, in the invention described in claim 3 , a plurality of groove portions 21 are formed on the surface of the wood-like molded product 10 by the embossing process using the embossing roller , and the wood-like molded product 10 is formed by these groove portions 21. The grain pattern appearing on the surface becomes more three-dimensional, and together with the groove portion 21, the grain pattern can be clearly expressed as a whole, and the texture of the surface of the wood-like molded product 10 is more realistic to the wood. It can be close to .
[0034]
Furthermore, in the invention described in claim 3 , a plurality of scratches are formed on the surface of the wood-like molded article 10 by the hairline processing using sanding paper, and the scratches of the wood-like molded article 10 are caused by these scratches. The wood grain pattern appearing on the surface becomes more three-dimensional, so that the wood grain pattern can be clearly represented as a whole, and the texture of the surface of the wood-like molded product 10 can be made closer to the actual wood feel .
[0035]
Furthermore, in the invention described in claim 3 , the surface of the wood-like molded product 10 is coated . In this case, it is desirable that the intermediate coating and the top coating treatment are performed as described above. That is, for example, it is preferable that a color sanding sealer is applied as an intermediate coating and then a urethane-based paint is applied as a top coating. Moreover, a weather-resistant paint may be applied as a top coat. Thus, when the intermediate coating and the top coating are applied, it is possible to make the coating more textured .
[0036]
As a result, in the invention described in claim 3 , the appearance quality of the wood-like molded product 10 can be improved .
[0037]
[0038]
[0039]
[0040]
[0041]
[0042]
[0043]
[0044]
[0045]
[0046]
[0047]
[0048]
[0049]
[0050]
[0051]
[0052]
[0053]
[0054]
[0055]
[0056]
[0057]
[0058]
[0059]
[0060]
[0061]
[0062]
[0063]
[0064]
[0065]
According to a fourth aspect of the present invention, in the surface treatment method for a wood-like molded article according to the second aspect, the coloring process is performed by painting with a colored paint or a wiping stain process.
Therefore, in the invention described in claim 4, the coloring process is performed by the colored paint or the wiping stain treatment . In this case, the paint is applied by spraying or by eight-cutter coating.
[0066]
As a result, in the invention according to claim 4 , in addition to the effect of the invention according to claim 2 described above, it is possible to form an appearance approximating an actual wood grain pattern, and the appearance of the wood-like molded product 10 The quality can be improved .
According to a fifth aspect of the present invention, in the surface treatment method for a wood-like molded article according to any one of the first to fourth aspects, the wood-like shaped article 10 is obtained by pulverizing a cellulose material. The pulverized powder obtained by the above process is made into a powder particle having a high bulk specific gravity, and a fixed particle is obtained by fixing a surface particle smaller in diameter and harder than the particle on the outer peripheral surface of the particle. The resin and the pigment are mixed and melted, and thereafter or simultaneously with melting, the resin and the pigment are formed into a desired shape.
[0067]
Therefore, in the invention described in claim 5 , in addition to the effect of the invention described in any one of claims 1 to 4, it is possible to form a pattern very close to the natural grain, It is possible to provide a wood-like molded article 10 having a feeling such as a feeling very close to that of natural wood .
[0068]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.
As shown in FIG. 1, the woody molded product 10 according to the present embodiment is a pulverized powder obtained by pulverizing a cellulosic material to obtain a powder particle having a high bulk specific gravity. A surface particle having a diameter smaller than that of the powder particle and harder is fixed on the surface to form a fixed particle, and a resin and a pigment are mixed and melted in the fixed particle, and thereafter or simultaneously with melting, it is formed into a desired shape.
[0069]
Such a wood-like molded product 10 is used as various housing parts, and is widely used for, for example, a step board of a staircase, a pillar, a window frame, and a rising stile.
The surface treatment method for the wood-like molded product 10 according to the present embodiment includes a step of embossing the surface of the wood-like molded product with an embossing roller to form a plurality of grooves, and a surface of the wood-like molded product. a step of attaching a plurality of scratches by applying a hair line process using the sanding paper, smooth by performing the steps of coloring the wood-like molded article, the polishing process using a polishing roller to the surface of the wood-like molded article A step of forming a surface and a step of coating the surface of the wood-like molded product.
[0070]
As shown in FIG. 1, the embossing step is performed by an embossing device 30 that includes a rotating shaft 31 and a cylindrical embossing roller 32 that can rotate around the rotating shaft 31. On the peripheral surface of the embossing roller 32, a large number of protrusions 33 for creating the groove 21 are provided. The height of the protrusion 33 is about 1 mm. Note that the depth of the groove 21 is equal to or less than the height of the protrusion 33.
[0071]
Moreover, the length dimension in the circumferential direction of the embossing roller 32 is formed to be the same as the length dimension in the length direction of the wood-like molded product 10 formed in a plate shape. Such a length direction of the direction and woody molded article 10 of the rotary shaft 31 of the embossing apparatus 30 is at right angles to the pressing the embossing roller 32 from above against the surface of the wood-like molded article 10 to be rotated while thus embossed to form a plurality of grooves 21.
[0072]
After that, when it is necessary to connect a plurality of wood-like molded products 10 along the length direction, the plurality of wood-like molded products 10 are combined. Although illustration is omitted, in the present embodiment, this is performed by actual processing out of actual rowing processing.
When the embossing process is completed, the process proceeds to a hairline processing process using sanding paper .
[0073]
In the hairline processing step, many so-called scratches are formed on the surface of the wood-like molded product 10 by sanding paper. When this hairline processing step is completed, the process proceeds to the coloring step.
In the coloring step, the coloring process is performed by applying a colored paint or wiping stain treatment. The wiping stain process is a process in which a paint is applied to the surface of the wood-like molded product 10 and then wiped off while it is not dry, so that only the groove 21 formed by the embossing process is colored. In this case, the coating is performed by a method such as application of a paint by spraying, or eight-cutter coating.
[0074]
After this coloring step is completed, in the present embodiment, before proceeding to the next polishing step, the drying step is started and the surface of the wood-like molded article 10 to which the colored paint is applied is dried. .
And after this drying process is complete | finished, it transfers to a grinding | polishing process. That is, in the polishing step, polishing using a polishing roller is performed on the surface of the wood-like molded product that has been subjected to the coloring processing.
[0075]
In this polishing operation, a polishing apparatus including a rotating shaft and a cylindrical polishing roller that can rotate in the reverse direction about the rotating shaft is used (not shown).
In the present embodiment, sandpaper having normal eye roughness is used for the polishing roller. When the polishing operation is performed, polishing is performed while extruding the wood-like molded product 10 along the rotation of the polishing roller. When the first polishing of the wood-like molded product 10 is finished, the polishing roller rotates in the opposite direction to the first, and the second polishing is performed. By rotating the polishing roller in the reverse direction, it is possible to perform polishing twice while the woody molded article 10 reciprocates once.
[0076]
By this polishing process, the paint applied in the coloring process on the smooth surface other than the scratches formed in the embossing and the groove 21 and the hairline processing is deleted, and the groove 21 and the scratches are inside. Only paint will remain.
At the same time, the unevenness of the coating film formed on the surface of the wood-like molded product 10 by the color processing and the slight unevenness of the surface of the wood-like molded product 10 are deleted, and a smooth painted base surface is formed.
[0077]
Further, if the surface of the wood-like molded product 10 has an extra color other than the wood grain, it is deleted in this polishing step , and the wood texture pattern and the pattern made of the paint adhering in the groove portion 21 become the wood-like molded product 10. Appears on the surface.
In this embodiment, the position of the polishing roller is not moved, and the polishing operation is performed by changing the position of the wood-like molded product 10, but the position of the wood-like molded product 10 is not changed and the polishing roller is rotated. You may move it.
[0078]
Further, in the present embodiment, the polishing operation is performed twice by reciprocating the wood-like molded product 10, but the wood-like molded product 10 or the polishing roller may be moved two or more times. In addition, the polishing operation can be performed an odd number of times, for example, three times of polishing operation by reciprocating halfway.
When the polishing process is completed, the process proceeds to the painting process.
[0079]
The painting process according to the present embodiment is divided into an intermediate coating process and an overcoating process.
In the intermediate coating process, a color sanding sealer is applied to the entire surface of the wood-like molded product 10. In this case, for example, when the floor board material is formed from the wood-like molded product 10, a lubricant is also used to improve the wear resistance. If necessary, a UV coat is applied before and / or after intermediate coating.
[0080]
When this intermediate coating process is completed, the process proceeds to a top coating process.
In the top coating process, the surface of the wood-like molded product 10 is coated. That is, for example, a top coat is applied with a urethane resin-based paint, specifically, clear urethane, and finally a UV coat is applied to cure the top coat on the top coat.
[0081]
The wood-like molded article 10 manufactured by the manufacturing process as described above can obtain a clear and good wood grain pattern with good appearance quality without using a conventional decorative board .
In addition, for example, when a floor board material is formed by this wood-like molded product 10, even if the caster is moved over the floor board, even if the caster gets over some hard object, the above surface Only the UV coat or the top coat applied to is damaged.
[0082]
On the other hand, although the UV coat and the top coat are applied, since the colored pattern is also formed by the groove portion formed by embossing, it is possible to experience the feel of wood more than the floor board using the decorative plywood.
In the above embodiment, the case where the coating process is formed by the intermediate coating work process and the top coating work process has been described as an example, but the present invention is not limited to the above embodiment, and the intermediate coating work process is performed. It can be omitted.
[0083]
As in the present embodiment, when an intermediate coating operation process is performed in the coating process, it is possible to apply a more luxurious coating.
Moreover, after the said embossing process, you may further provide the process of deleting the fine unevenness | corrugation produced by the embossing in the surface of the wood-like molded article 10 using a special coarse sandpaper.
[0084]
When such a process is provided, the woody molded product 10 having a smoother surface is formed, and the appearance quality can be further improved.
Further, in the above embodiment, the wood-like molded product 10 is pulverized by pulverizing the cellulose material to obtain a powder having a high bulk specific gravity. An example of a case where surface particles smaller in diameter and harder than the powder particles are fixed to form fixed particles, resin and pigment are mixed and melted in the fixed particles, and then molded into a desired shape after or simultaneously with melting. However, the present invention is not limited to the above-described embodiment, and it may simply be obtained by mixing and melting a pulverized powder obtained by pulverizing a cellulose material and melting and extruding the pulverized powder.
[0085]
【The invention's effect】
[0086]
[0087]
[0088]
[0089]
In the invention of claim 1, a plurality of grooves are formed on the surface of the wood-like molded product by the embossing treatment using the embossing roller, and the grain pattern appearing on the surface of the wood-like molded product by these grooves Becomes more three-dimensional, and the wood grain pattern can be clearly expressed as a whole, and the texture of the surface of the wood-like molded product can be made closer to the feeling of an actual tree.
[0090]
Furthermore, in the invention of claim 1, a plurality of scratches are formed on the surface of the wood-like molded product by the hairline processing using sanding paper , and these scratches cause the surface of the wood-like molded product to be formed. The appearing wood grain pattern becomes more three-dimensional and combined with the grooves formed by embossing, the wood grain pattern can be clearly expressed as a whole, and the texture of the surface of the wood-like molded product is more realistic. You can get closer to the feeling.
[0091]
As a result, in the first aspect of the invention, the appearance quality of the wood-like molded product can be improved.
[0092]
[0093]
[0094]
In the invention according to claim 2, a plurality of grooves are formed on the surface of the wood-like molded product by the embossing treatment using the embossing roller, and the grain pattern appearing on the surface of the wood-like molded product by these grooves Becomes more three-dimensional, and the wood grain pattern can be clearly expressed as a whole, and the texture of the surface of the wood-like molded product can be made closer to the feeling of an actual tree.
[0095]
Furthermore, in the invention according to claim 2, a plurality of scratches are formed on the surface of the wood-like molded product by the hairline processing using sanding paper, and the surface of the wood-like molded product is formed by these scratches. The appearing wood grain pattern becomes more three-dimensional and combined with the grooves formed by embossing, the wood grain pattern can be clearly expressed as a whole, and the texture of the surface of the wood-like molded product is more realistic. You can get closer to the feeling.
[0096]
In the invention according to claim 2, since the wood-like molded product is colored, the texture of the surface of the wood-like molded product can be made closer to the actual wood feel.
As a result, in the invention according to claim 2, the appearance quality of the wood-like molded product can be improved .
[0097]
[0098]
In the invention of claim 3 , a plurality of grooves are formed on the surface of the wood-like molded product by the embossing treatment using the embossing roller, and the grain pattern appearing on the surface of the wood-like molded product by these grooves Is more three-dimensional and, together with the grooves formed by embossing, can clearly express the wood grain pattern as a whole and make the texture of the surface of the wood-like molded product closer to that of an actual tree be able to.
[0099]
Further, in the invention of claim 3 , a plurality of scratches are formed on the surface of the wood-like molded product by the hairline processing using sanding paper , and these scratches cause the surface of the wood-like molded product to be formed. The appearing wood grain pattern becomes more three-dimensional, so that the wood grain pattern can be clearly expressed as a whole, and the texture of the surface of the wood-like molded product can be made closer to the actual wood feel.
[0100]
Furthermore, in the invention described in claim 3 , the surface of the wood-like molded product is painted. In this case, it is desirable that the coating is subjected to intermediate coating and top coating. That is, for example, it is preferable that a color sanding sealer is applied as an intermediate coating and then a urethane-based paint is applied as a top coating. Moreover, a weather-resistant paint may be applied as a top coat. In this way, when the intermediate coating and the top coating are applied, it is possible to make the coating more textured. As a result, in the invention described in claim 4, the appearance quality of the wood-like molded product 10 can be improved .
[0101]
[0102]
[0103]
[0104]
[0105]
[0106]
[0107]
[0108]
[0109]
[0110]
[0111]
[0112]
[0113]
[0114]
[0115]
[0116]
[0117]
[0118]
In the invention according to claim 4, the coloring process is performed by the colored paint or the wiping stain treatment. In this case, the paint is applied by spraying or by eight-cutter coating.
[0119]
As a result, in the invention described in claim 4 , in addition to the effect of the invention described in claim 2 described above, it is possible to form an appearance approximating an actual wood grain pattern, and the appearance quality of the wood-like molded product Can be improved.
In the invention according to claim 5 , in addition to the effect of the invention according to any one of claims 1 to 4 , it is possible to form a pattern very close to a natural grain, and texture such as touch feeling. Can also provide wood-like molded products that are very close to natural wood .
[Brief description of the drawings]
FIG. 1 is a perspective view showing a first embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Wood-like molded product, 21 ... Groove part, 30 ... Embossing apparatus, 31 ... Rotary shaft, 32 ... Embossing roller, 33 ... Protrusion.

Claims (5)

A surface treatment method for a wood-like molded product obtained by mixing and melting a resin and a pigment in a pulverized powder obtained by pulverizing a cellulose material, and extruding the mixture.
Forming a plurality of grooves by embossing the surface of the wood-like molded product with an embossing roller ;
A wood-like molded article comprising a step of applying a plurality of scratches to the surface of the wood-like molded article having a plurality of grooves formed by the embossing, by applying a hairline process using sanding paper. Surface treatment method. A surface treatment method for a wood-like molded product obtained by mixing and melting a resin and a pigment in a pulverized powder obtained by pulverizing a cellulose material, and extruding the mixture.
Embossing with an embossing roller on the surface of the wood-like molded product to form a plurality of grooves,
Applying hairline processing using sanding paper on the surface of the above wood-like molded product ,
Then, a surface treatment method for a wood-like molded product, characterized by subjecting the wood-like molded product to coloring. A surface treatment method for a wood-like molded product obtained by mixing and melting a resin and a pigment in a pulverized powder obtained by pulverizing a cellulose material, and extruding the mixture.
Embossing with an embossing roller on the surface of the wood-like molded product to form a plurality of grooves,
Applying hairline processing using sanding paper on the surface of the above wood-like molded product ,
Thereafter, the surface treatment method of the woody molded article, characterized in that applying a coating to the surface of the wood-like molded article. 3. The method for treating a surface of a wood-like molded article according to claim 2 , wherein the coloring process is performed by painting with a colored paint or a wiping stain process. The woody product is a pulverized powder obtained by pulverizing a cellulose material to obtain a powder particle having a high bulk specific gravity. was fixed to a fixed grains, the resin and pigment are mixed in the fixed grain, and melted, then, or claims 1, characterized in that it has been formed into a desired shape simultaneously with the melting any of claims 4 A method for surface treatment of a woody molded article according to claim 1.

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