CN115256575A - Imitative shade grain wood based on densification treatment and production method thereof - Google Patents

Abstract

The invention discloses a densification treatment-based imitative hatch-grained wood, which comprises a wood main body (1), wherein hatch-grained parts (2) and non-hatch-grained parts are formed on the surface of the wood main body (1), the arrangement structures and the reflectivity of wood fibers on the surfaces of the hatch-grained parts (2) and the non-hatch-grained parts are different, and the thicknesses of the hatch-grained parts (2) and the non-hatch-grained parts are consistent. Simultaneously, discloses a production method of the imitative hatch grain wood, which comprises the following steps: processing the surface of the wood to be flat, spraying a treating agent on the surface of the wood, standing, pressing the surface of the wood by using a steel die with patterns, and sequentially drying, sanding with a fixed thickness, polishing and coating to obtain a finished product. The invention has the characteristics of good stability of the shading effect, low production cost and good environmental protection.

Description

A kind of imitation pattern wood based on densification treatment and its production method

technical field

The invention relates to a shadow-grain wood and a production method thereof, in particular to a shadow-grain wood based on densification treatment and a production method thereof.

Background technique

On the cut surface of special parts of wood of some precious tree species, there will be a variety of special shadow textures similar to "tiger stripes", "water ripples" and "gentian stripes". Different and very beautiful light and shadow effects, resulting in higher value and loved by many consumers. However, this kind of shadow wood generally only appears on stress wood, and stress wood is difficult to be processed due to its low mechanical strength, difficulty in sawing, easy deformation, etc., so natural shadow wood cannot be used as a base material for processing. And this makes manufacturers need to process conventional wood to generate imitation shadow grain effect, so as to satisfy consumers' pursuit of shadow grain style.

In the current technology, the imitation pattern effect of wood is generally realized by three methods. The first method is to partially paint the wood surface with special reflective/luminescent materials, so that the wood forms a special light and shadow effect under external light; but This treatment method not only requires the research and development of paint formulations for wood of different colors, which will consume a lot of manpower and material resources, but also the paint will gradually fade and wear out during use, making it impossible to maintain the stability of the shadow pattern effect.

The second method is to partially sand the surface of the wood with a scraper or a hand-held sander, so that the smoothness and light reflectivity of the wood on the sanded surface are higher, so that it will form a difference in reflective effect with the rest of the non-sanded surface under the light. difference, to achieve the effect of shading. However, on the one hand, this method needs to be completed manually, resulting in high labor costs and low production efficiency; on the other hand, the sanding process is only suitable for wood with dense fiber arrangement, and the surface of the wood is easy to form unevenness after sanding. Thus there are certain limitations.

The third method is to use veneer veneer with shadow effect to decorate the wood surface, but the veneer treatment not only requires the use of adhesives, but its environmental protection indicators cannot be guaranteed; Significantly increase the production cost of imitation pattern wood, and the applicability is poor.

Therefore, the existing imitation shadow grain wood has the problems of poor stability of shadow grain effect, high production cost and poor environmental protection.

Contents of the invention

The purpose of the present invention is to provide a kind of imitation pattern wood based on densification treatment and its production method. It has the characteristics of good stability of shading effect, low production cost and good environmental protection.

The technical solution of the present invention: a kind of imitation shadow pattern wood based on densification treatment, including a wooden body, the surface of the wood body forms a shadow textured part and a non-shaded textured part, and the wood fiber arrangement structure on the surface of the shadow textured part and the non-shaded textured part Unlike the reflectance, the thickness of the shading part and the non-shading part are the same.

In the above-mentioned imitation pattern wood based on densification treatment, the non-shape portion includes a high-density portion and a low-density portion, and the shadow portion is located at the junction of the high-density portion and the low-density portion , the wood fibers in the shading part are distributed in parallel in an oblique shape.

Aforesaid a kind of production method based on the imitation grain wood of densification treatment, comprises the following steps:

① Process the wood surface until it is flat to obtain product A;

② Spray the treatment agent on the surface of product A and let it stand to get product B;

③ Pressing the surface of product B with a steel mold, so that the surface of product B forms high-density parts and low-density parts with different heights, and the surface height of the high-density part is lower than that of the low-density part, so that product C is obtained;

④ drying product C to obtain product D;

⑤Sanding the surface of product D with a fixed thickness, so that the high-density part and the low-density part of product D are sanded to the same thickness, and product E is obtained;

⑥ Polish the surface of product E to obtain product F;

7. Coating the surface of the F product to obtain a finished product.

In the aforementioned production method, the treatment agent in step ② is an ammonia solution with a mass fraction of less than 15%, and the spraying amount of the treatment agent is 200-400 g/m ² .

In the aforementioned production method, the surface temperature of the steel mold in the step ③ is 150-180° C. during pressing, and the pressing time of product B is 60-120 seconds.

In the aforementioned production method, the pressing depth of product B in the high-densification part in step ③ is not greater than 1.5mm, and the height of product B between the lowest point of the high-densification part and the highest point of the low-densification part The difference is not more than 0.8mm.

In the aforementioned production method, the difference between the surface height of product D in step ⑤ after thickness sanding and the height of product C in the high-density part in step ③ is not more than 0.3mm.

In the aforementioned production method, in the step ⑤, product D is subjected to constant-thickness sanding with 100-300 mesh sandpaper, and in the step ⑥, product E is fine-sand polished with 300-600 mesh sandpaper.

In the aforementioned production method, in the step ⑤, product D is placed on the top of product D and left to stand for 48 hours before the thickness is sanded.

In the aforementioned production method, after the product B is pressed in step ③, the surfaces of the high-densification part and the low-densification part form a continuous inclined structure.

Compared with the prior art, the present invention has the following characteristics:

(1) In the present invention, through the hot-pressing treatment on the surface of the wooden main body, the wood can form a height difference between the high-density part and the low-density part after hot pressing, and the texture of the two surfaces will form a difference with the change of the compression height , so that the wood fibers at the shading part will be regularly arranged at a specified inclination angle with the ups and downs of the surface of the board; and after the wood fibers in this state are flattened, the cells on the shading part surface will be arranged side by side with the same section plane setting, so as to form a specular reflection, and the non-shaded part around it maintains the original diffuse reflection effect of the wood; thereby improving the light reflectance of the shadowed part at a specific angle and making it form a significant difference in light and shade relative to the surrounding area, that is, at a specific It is brighter under the lighting effect, and darker under the non-specific lighting environment, so as to realize the shadow texture effect; the shadow texture effect is formed by the change of the wood fiber arrangement, so compared with the shadow texture formed by the existing coating, sanding and veneering The texture effect is more stable, and it is not easy to blur or partially peel off the shadow texture due to wear and tear;

(2) Since the wood grain texture on the high-densification part and the low-densification part will form different texture effects with different hot-pressing depths, when the high-densification part and the low-densification part are sanded to the same height, Compared with the high-density part, the surface of the low-density part is eliminated more, and the wood grain texture also changes accordingly, so that the high-density part and the low-density part will form obvious texture differences and a sense of fracture at the boundary , so that the visual difference between the shading and surrounding non-shading parts is more obvious under a specific lighting ring;

(3) By spraying the treatment agent on the wooden body before hot pressing and standing still, the rebound of wood after hot pressing can be reduced and the penetration of water can be accelerated, so that the moisture content of the wood surface can be changed from the original 8 to 15%. Increase to more than 20%, and the moisture content of the wood can reduce the strength and increase the plasticity after the increase, thereby improving the deformation effect of the wood during hot pressing and reducing the rebound range of the wood after hot pressing; If the weight of the wooden body is left standing still, the stress of the wooden body can be relaxed during the standing process and the moisture content can be restored to a balanced state, thereby further avoiding the rebound of the wood after compression. The moisture absorption rebound of the chemical part can be lower than 0.08mm, which can effectively ensure the stability and flatness of the wood surface; when the flatness of the wood surface is improved, the mirror reflection effect of the wood at the shadow part can also be kept stable, that is, to avoid the The stress deformation of the wood board causes the surface undulation of the shadow texture and affects its reflection effect;

(4) Due to the higher density and higher strength of the wood after compression, the wood can also be strengthened after the hot pressing process, effectively improving the overall hardness of the wood and alleviating the shrinkage and swelling of the wood; it has been proved by experiments that, Compared with untreated wood, the wet expansion rate in the width direction of the present invention is reduced by 8%, and the dry shrinkage rate in the width direction of the present invention is reduced by 12% compared with untreated wood;

Therefore, the present invention has the characteristics of good stability of shadow pattern effect, low production cost and good environmental protection.

Description of drawings

Fig. 1 is the wood fiber rendering of the wooden main body at the cut surface;

Fig. 2 is process effect drawing of the present invention;

Fig. 3 is the schematic diagram of natural shadow pattern;

Figure 4 is a schematic diagram of the present application.

The marks in the attached drawings are: 1-wooden body, 2-shaded part, 3-highly densified part, 4-low densified part.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis for limiting the present invention.

Example. A kind of imitation shadow pattern wood based on densification treatment, as shown in Figure 1, including a wooden body 1, the surface of the wooden body 1 forms a shadow textured part 2 and a non-shaded textured part, and the shadow textured part 2 and the non-shaded textured part surface The wood fiber arrangement structure and reflectivity are different, and the thickness of the shading part 2 and the non-shading part are the same.

The non-shape portion includes a high-density portion 3 and a low-density portion 4, the shadow portion 2 is located at the junction of the high-density portion 3 and the low-density portion 4, and the wood fibers at the shady portion are inclined The density of the high-density part 3 is 110-150% of the original wood density.

Described a kind of production method based on the imitation grain wood of densification treatment, comprises the following steps:

① Process the surface of the wood until it is flat, and leave a machining allowance of 1.5-2 mm to obtain product A. The cut surface of product A is shown in Figure 2a;

② Spray the treatment agent on the surface of product A and let it stand for 20 minutes to obtain product B;

③The surface of product B is pressed by a steel mold with a pattern, so that the surface of product B forms depressions with the same pattern pattern, that is, high-density parts and low-density parts of different heights are formed, and the surface height of the high-density part is low In the low-densification part, product C was obtained, and the cut surface style of product C is shown in Figure 2b;

④ Use hot air at 30-40°C to dry product C, remove the treatment agent attached to the surface of product C, and obtain product D;

⑤Sanding the surface of product D with a fixed thickness, so that the high-density and low-density parts of product D are sanded to the same thickness, which is lower than the thickness of the wood before sanding with a fixed thickness, to obtain product E, E The section style of the product is shown in Figure 2c;

⑥ Polish the surface of product E to obtain product F;

⑦ Paint the surface of product F to obtain the finished product. The surface effect diagram of the finished imitation wood is shown in Figure 4. This Figure 4 is only used to show that the wood surface of this application can form light and dark differences under specific light, not The only shading effect of the product, the manufacturer can change the arrangement pattern and depth of the non-shading part according to the needs, so as to form other different shading effects.

The treatment agent in the step ② is an ammonia solution with a mass fraction of less than 15%, and the spraying amount of the treatment agent is 200-400g/m ² .

In the step ③, the surface temperature of the steel mold during pressing is 150-180° C., and the pressing time of product B is 60-120 seconds.

In the step ③, the pressing depth (X1-H) of product B in the high-densification part is not greater than 1.5mm, and the height difference between the lowest point of product B in the high-densification part and the highest point in the low-densification part (X2-H) is not greater than 0.8mm.

The surface height difference (X3-H) of product D in the step ⑤ after thickness sanding and the height difference (X3-H) of product C in the high-density part in step ③ is not greater than 0.3mm.

In the step ⑤, product D is subjected to thickness sanding with 100-300 mesh sandpaper, and in step ⑥, product E is fine-sand polished with 300-600 mesh sandpaper.

In the step ⑤, before setting the thickness and sanding of product D, place a heavy object on the top of product D and let it stand for 48 hours, so as to eliminate the stress on the wood surface and restore the moisture content of the wood to balance.

After the product B in step ③ is pressed, the surfaces of the high-densification part and the low-densification part form a continuous inclined structure.

Working principle of the present invention: the present invention compresses the surface of the wooden main body 1 by hot pressing, so that the wood fibers on the surface of the high-densification part 3 can overlap each other to form a depression after hot-pressing, while the degree of depression at the position of the low-densification part 4 is Below the high-densification part 3, this makes the wood fiber structure of the shading part 2 inclined towards the high-densification part 3 with the fluctuation of the height of the wood surface. And then when the surface of the wooden main body 1 is sanded and the thickness is fixed, the wood grain at the position of the high-density part 3 can basically maintain the original wood grain effect because of the small amount of sanding, and the wood grain of the low-density part 4 will be due to the small amount of sanding. The increase of the amount of sanding creates a difference with the wood grain of the high-density part 3, and at the same time, the wood fibers in the shadow pattern part 2, which are originally in the same inclined state, will form countless cut planes with the same shape with the sanding, and the cell wall at this position will be different. Unity leans in one direction. This makes it possible that when light enters at a specific angle, the light entering the shady ridges 2 will be largely reflected in the same direction by the cell walls in the same inclined state, while the remaining light rays in the non-shaded ridges maintain the conventional diffuse reflection effect.

Therefore, under a specific lighting environment, the wooden main body 1 will be brighter at the shading part 2, and when the specific light is lost, the wooden main body 1 will be darker at the shading part 2; so that the wooden main body 1 will form in different positions. The difference between light and dark forms a shadow texture effect. Moreover, due to the difference in wood grains between the high-densification part 3 and the low-densification part 4 on both sides, the wood grain effect of the shading part 2 can be more obvious, thereby improving the conspicuousness of the shading effect.

Claims (10)

1. The utility model provides a imitative shade grain timber based on densification treatment which characterized in that: the wood fiber decorative plate comprises a wood main body (1), wherein a pattern part (2) and a non-pattern part are formed on the surface of the wood main body (1), the arrangement structure and the reflectivity of wood fibers on the surface of the pattern part (2) and the surface of the non-pattern part are different, and the thickness of the pattern part (2) is consistent with that of the non-pattern part.

2. The imitative hatch wood based on densification processing according to claim 1, characterized in that: non-shading portion includes high closely knit portion (3) and low closely knit portion (4), shading portion (2) are located the junction of high closely knit portion (3) and low closely knit portion (4), and the wood fibre of shading portion (2) is slope form parallel distribution.

3. The method for producing imitative shade grain wood based on densification processing according to any one of claims 1-2, characterized by comprising the following steps:

(1) processing the surface of the wood to be flat to obtain a product A;

(2) spraying a treating agent on the surface of the product A and standing to obtain a product B;

(3) pressing the surface of the B product through a steel die to form a high-compactness part and a low-compactness part with different heights on the surface of the B product respectively, wherein the surface height of the high-compactness part is lower than that of the low-compactness part to obtain a C product;

(4) drying the product C to obtain a product D;

(5) sanding the surface of the product D in a fixed thickness to ensure that the high-compactness part and the low-compactness part of the product D are sanded to the same thickness to obtain a product E;

(6) polishing the surface of the product E to obtain a product F;

(7) and coating the surface of the product F to obtain a finished product.

4. The production method according to claim 3, characterized in that: the treating agent in the step (2) is ammonia water solution with the mass fraction of below 15%, and the spraying amount of the treating agent is 200-400 g/m ² 。

5. The production method according to claim 3, characterized in that: the surface temperature of the steel die in the step (3) during pressing is 150-180 ℃, and the pressing time of the B product is 60-120 seconds.

6. The production method according to claim 3, characterized in that: in the step (3), the pressing depth of the B product in the high compaction part is not more than 1.5mm, and the height difference between the lowest point of the B product in the high compaction part and the highest point of the B product in the low compaction part is not more than 0.8mm.

7. The production method according to claim 6, characterized in that: and (3) the height difference between the surface height of the product D after the fixed-thickness sanding in the step (5) and the height difference between the product C in the high-densification part in the step (3) is not more than 0.3mm.

8. The production method according to claim 3, characterized in that: and (5) sanding the D product in a fixed thickness through 100-300-mesh sand paper, and performing fine sanding and polishing on the E product through 300-600-mesh sand paper in the step (6).

9. The production method according to claim 3, characterized in that: and (5) placing a heavy object on the top of the product D and standing for 48 hours before sanding the product D with the fixed thickness.

10. The production method according to claim 3, characterized in that: and (4) after the product B is pressed, forming a continuous inclined surface between the high-compactness part and the low-compactness part, wherein the middle part of the inclined surface is an area where the shadow pattern part is located.

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