JPS6192806A - Method of dyeing veneer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field J] The present invention relates to a method for dyeing veneers used for producing laminated decorative veneers.

[Background Art] Laminated decorative veneers are manufactured by laminating veneers obtained by rotary or slicing logs and slicing them. That is, as shown in the second part 1(a), a large number of veneers 1 are stacked with adhesive, and the veneers 1 are pressed between a concave mold 5 having a concave surface and a convex mold 6 having a convex surface, A curved and deformed laminated timber 7 is generated. Then, as shown in FIG. 2(b), by slicing the laminated timber 7 with a knife 8 in a direction intersecting the laminated surface of each board 1, the sliced end surface of each deck 1 and the sliced end surface of the adhesive are shaped like wood 1]. This is to obtain a laminated decorative veneer A that appears on the surface as. In other words, in this way, it is possible to produce a high-quality laminated decorative lit board A with a beautiful wood appearance from low-grade raw wood, and moreover, it is possible to produce a decorative lit board A with a beautiful wood appearance. By changing the concave and convex shapes of the convex edges 6 and 5, various expressions of book [1] can be made, and it can be said that the book [1] is 14r.

In order to manufacture laminated decorative veneer A in this way, the veneer 1 is dyed in the spring wood color or summer wood color of the wood, and the spring wood color or summer wood color portion has a wood grain pattern. The wood grain is expressed by
) (b) In some cases, staining is performed as in (c). In other words, by dyeing the entire veneer 1 and then dyeing only the surface of the veneer 1, the veneer 1 is given a light spring wood color and a dark summer wood color. It is. In this case, as shown in tjSi diagram (a), dark color staining 2 is applied to the entire surface of one side of the veneer 1,
As shown in Figure 1(b), dark color dyeing 2 is applied in a band-like direction approximately perpendicular to the longitudinal direction of the veneer 1, or approximately parallel to the longitudinal direction of the veneer 1 as shown in Figure 1(c). Depending on the desired wood grain expression, dyeing 2 in a dark color in a strip in the direction of .

In this way, in order to dye the entire veneer 1 in a light color and dye the surface part in a dark color, conventionally, the veneer 1 is first immersed in a light-colored dyeing solution set at a predetermined bath ratio. was permeated into the veneer 1 to stain the entire veneer 1 in a light color, and then a dark color staining solution was applied to the surface of the veneer 1 and dried. However, when dyeing the veneer 1 in a light color using the immersion method, the veneers 1 are placed one after another in the dyeing solution and immersed, so that eluted components from within the veneer 1 are dissolved into the dyeing solution. As the dyeing solution is changed t1, the state of dyeing on the veneer 1 will gradually change, and in order to achieve the same dyeing, extremely difficult management of the dye composition and dyeing time is required. Furthermore, there is a problem in that it is difficult to dispose of dyeing waste liquid that has deteriorated after being used many times. Furthermore, when the veneer 1 is immersed in a dyeing solution, water floats on the surface of the veneer 1, and the distribution of moisture on the surface of the veneer 1 is not uniform. There is also the problem that when the liquid is applied to the surface of the lit plate 1, the amount of application becomes non-uniform. For this purpose, after dyeing the day plate 1 in a light color by dipping,
Attempts have been made to dry the veneer 1 to make the moisture distribution uniform, but drying in this way causes curls to occur on the veneer 1, making it difficult to apply the dark dyeing solution and making the veneer 1 more uniform. This makes coating difficult.

] Purpose of the invention 1 The present invention has been made in view of the above points, and an object of the present invention is to provide a method for dyeing a veneer that can be uniformly dyed by printing without using the dipping method. It is something.

[Disclosure of the Invention J The method for dyeing a veneer according to the present invention is characterized in that a dye trace containing a penetration aid is applied to both sides of the veneer, and then a dyeing liquid is applied to the surface of the veneer. The present invention will be described in detail below.

The veneer 1 is obtained by a-tarrying or slicing raw wood, and if necessary, it is decolorized and the humidity is adjusted to a predetermined moisture content.The surfaces of both sides of the veneer 1 are printed. Climb up the surface and apply the staining solution. This dye solution contains a penetration aid. The penetration aid is IFII, a dyeing aid, which has the effect of increasing surface activity and increasing the permeability of the dye into the veneer 1, such as ethylene glycol (EG), polyethylene glycol (r'EG), etc.
, polyethylene glycol methanol (['EGME)
, polyethylene glycol methacrylate-F, etc. can be used. When a dyeing solution containing a penetration aid is applied to both sides of the veneer 1, and several veneers 1 are stacked and subjected to heat treatment (steaming), the dye reaches inside the veneer 1. This means that the veneer 1 is evenly penetrated and fixed, and the entire veneer 1 can be colored uniformly.Here, the veneer 1
In order to dye the entire surface uniformly, the immersion method in which the veneer 1 is immersed in a dyeing solution is advantageous, which was thought to be difficult with the textile printing method, but the present invention solves this problem even with the textile printing method. Uniform dyeing is made possible by incorporating a penetration aid. In this way, light color dyeing is applied to the veneer 1.
After applying it to the entire surface of the veneer 1, apply a dark color dyeing solution to the entire surface of the veneer 1 using a textile printing method. The state of moisture on the surface of the veneer 1 is very uniform, and there is no variation as in the dipping method, and the dark dyeing solution is uniformly applied to the entire surface of the veneer 1. In this way, the tIS1 diagram (,
), it is possible to obtain a colored veneer 1 in which the entire surface of the veneer 1 is dyed in a deep color 2. If a dark dyeing liquid is applied here, if the veneer 1 is placed in a moist heat condition even partially, the applied dye will gradually penetrate into the inside of the veneer 1, so only the surface will be dyed darkly. In order to clearly differentiate the staining from the inside, it is necessary to dry quickly to remove moisture from the staining solution.

In addition, as shown in FIG. 1(b), a band-shaped dark dyeing 2 approximately perpendicular to the longitudinal direction of the veneer 1 is formed in an uneven color, or
As shown in Figure (e), if dark colored dyeing 2 is formed in a band shape approximately parallel to the longitudinal direction of the veneer 1 in an uneven color, both sides of the veneer 1 whose moisture content has been adjusted to a predetermined level. Immediately after applying a light-colored staining liquid to the veneer 1, apply a dark-colored staining liquid to the surface of the veneer 1 or both the front and back sides approximately perpendicular to or approximately parallel to the longitudinal direction of the veneer 1. Dyeing is done by stacking several sheets and subjecting them to moist heat treatment. The preferred moisture content of the veneer 1 before being dyed in a light color varies depending on the 01 type and the dye concentration of the dye solution, but generally uniform dyeing is possible after 1 () 0% + 1ii. . In addition, if the target colored veneer is light in color and the dyeing density is light ν1, and when laminating using a moisture-curing adhesive, the moisture content should be set to 0 to 20% and the dyeing solution should be treated with moist heat. In addition, when applying a dark dyeing solution in a band shape as shown in Figure 1 (b) and Figure 1 (c), it is possible to adjust the moisture content to be suitable for lamination. Since the dark colored dyeing solution will be partially applied to the veneer 1, which has been uniformly coated with the dyeing solution, if a large amount of this dark colored dyeing solution is applied, this area will have a higher moisture content than other parts. may become high and the moisture distribution may become uneven.

So, in this case, it is necessary to reduce the water content of the dark dyeing solution, and in order to reduce the water content of the dyeing solution while securing the necessary amount of dye to dye the desired color. It is preferable to devise a formulation such as increasing the dye concentration of the dyeing solution or increasing the amount of auxiliary agents to increase the solubility of the dye.

Laminated decorative veneer A is manufactured using colored veneer 1 that has been dyed in light and dark colors by textile printing as shown in the graph in Figure 5! The surface of l board 1 is dark-colored, and the wood grain is expressed by the shade of dyeing of this veneer 1. For example, from the colored veneer 1 in Fig. 1(a) to the laminated decorative veneer A. ! ! In building,
First, a veneer 1 whose surface is dyed in a dark color as shown in Figure 3(a)
A and a veneer 1b whose surface does not darken are combined, adhesive is applied to these veneers 1a and 1b, and this is formed into molds such as a concave mold 5 and a convex mold 6 in the same manner as in FIG. 2(a). A laminated timber 7 is created by pressing the laminated timber 7 in between, and the laminated timber 7 is further sliced in the same manner as shown in Fig. 2(b), so that the two darkly stained parts are doubled as shown in Fig. fjS3 (b). The dark wood grain part 9 has a dark color, and the two parts are dyed in a dark color. (The light grain part 10 and the two dark dyed parts are all △ in one piece.) The wood grain pattern has a natural feel with the middle wood grain part 11. For example, if colored veneer 1 in Fig. 1(c) is used to create laminated decorative veneer A in the same manner, as shown in Fig. 4. A colored veneer 12 is produced by the two dark dyed parts, and a decorative veneer with a natural feel can be obtained.

The present invention will be explained in detail below using examples.

After adjusting the humidity of a 1,0 ml FF rotary veneer of 11 L Aius to a moisture content of 60 to 150%, I) E
A light-colored dye solution containing 15 parts by weight of G (#600), 85 parts by weight of water, and 1.5 parts by weight of dye was applied to both sides of this veneer at a coating amount of 100±IOg/m' respectively. 0 Then, several of these veneers were stacked and packed in a plastic bag, and subjected to moist heat treatment for 3 hours at a material temperature of 95 to 10°C. From, P E
(';(#41100) is 5 mjt parts, water is 95 parts by weight, and dye is 6.0 parts by weight.) Dark dye traces are applied to the entire surface of one side of the veneer at a rate of 50±1() g/2 floors. A colored veneer as shown in FIG. 1(a) was obtained by applying the same amount and drying it.

The colored Qj board thus obtained was dried to a moisture content of 5 to 15%, placed in the same manner as in FIG. Further, by slicing in the same manner as in FIG. 2(b), a laminated decorative veneer having a natural-looking wood grain pattern as shown in FIG. 3(b) was obtained.

1. After pre-treating a 1.01-thick Ro,-Tally veneer of Salmon Genshina in hot water to a moisture content of 60-100%, PEG (#1
000) is 20 parts by weight, water is 80 parts by weight, and dye is 1.0 parts by weight.
A light-colored dye solution containing 1 part by weight was applied to both sides of this veneer at a coating amount of 100±log/m''. Next, immediately after this, 40 parts by weight of PEG (Hiiragi 2000) and 1 part by weight of water were added. Apply 50 ± 10 g of a dark dye solution containing 60 weight JIIL parts and 2.0 parts by weight of dye to one side of the veneer in the form of a strip with a width of 70-100 mm in a direction almost perpendicular to the longitudinal direction of the veneer. Then, 30 of these veneers were stacked one on top of the other, packed in a plastic bag, and heat-treated for 3 hours at a temperature of 95 to 100°C. A colored veneer with band-like color unevenness was obtained.

By drying the thus obtained colored veneer to a moisture content of 5 to 15% and then rolling it in the same manner as shown in Fig. 2 (a) and (b), a laminated cosmetic resembling natural nuts is produced. I got a veneer.

! After decolorizing a JLJLL Agatis 1, 0 +***P1 rotary jp board, the water content was adjusted to 5 to 30%. Next, a light-colored dye solution containing 2 parts by weight of PEG (#1000), 80 parts by weight of water, and 10 parts by weight of dye was applied to both sides of this veneer in an amount of 100±10 g/J. Immediately after this, a dark dye solution containing 40 parts by weight of PEG (#2000), 60 parts by weight of water, and 20 parts by weight of dye was applied to one side of the veneer in the longitudinal direction of the day board. 40±1011/II in a band shape with a width of 10 to 30 mm approximately in the direction of company V's no.
6 Then, 40 pieces of this veneer were coated with a coating amount of
+f (Packed in one plastic bag, material temperature is 95-100
By performing moist heat treatment for 2 hours under conditions of
A colored veneer with band-like color unevenness as shown in figure (c) is shown in ().

Using the colored veneer obtained in this way, Fig. 2(a)(b)
), a laminated decorative veneer as shown in Fig. fjS4, which resembles natural cedar and has color unevenness in the direction of the long hairs in the J part, was obtained.

Effect of the invention 1 As described above, in the present invention, a dyeing solution containing a penetration aid is applied to both sides of the veneer, and then the dyeing solution is applied to the surface of the veneer. The veneer can be dyed uniformly with a dyeing solution containing a penetration aid, and the printing method of applying the dyeing solution can also achieve uniform dyeing, eliminating the need for dyeing with the dipping method. This eliminates problems such as the case.

[Brief explanation of the drawing]

Figures 1 (a), (b) and (c) are partially omitted perspective views of variously dyed veneers, Figures 2 (a) and (b) are perspective views showing the production of laminated decorative veneers; Figures 3 (1) and (b) are an exploded view showing the arrangement of veneers when manufacturing a laminated decorative veneer and a front view of the laminated decorative veneer, Figure 4 is a front view of the laminated decorative veneer, and Figure 5 is a graph showing the density distribution of staining, and 1 in the figure is a single plate. Figure 1 Figure 2 (b) 5th v! J −ψ story piece Jl−

Claims (4)

[Claims] (1) Apply a dye solution containing a penetration aid to both sides of the veneer,
A method for dyeing veneers, which is characterized in that a dyeing solution is then applied to the surface of the veneer. (2) A method for dyeing a veneer according to claim 1, characterized in that the dyeing solution is applied to the entire surface of the veneer. (3) A method for dyeing a veneer according to claim 1, characterized in that the dyeing solution is applied to the surface of the veneer in a band shape in a direction substantially perpendicular to the longitudinal direction of the veneer. (4) The method for dyeing a veneer according to claim 1, characterized in that the dyeing solution is applied to the surface of the veneer in a band shape in a direction substantially parallel to the longitudinal direction of the veneer.