JPS60180840A - Grain-like resin decorative board - 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 The present invention relates to a wood-grain resin decorative board used as a building material or interior material.

There are various types of decorative laminates used as building materials and interior materials, but their composition can be roughly divided into surface materials and base materials.

Surface materials include natural wood decorative boards, melamine resin decorative boards, diallyl phthalate resin decorative boards, polyester resin decorative boards, printed plywood, decorative sheets, and vinyl chloride decorative boards. Among them, resin decorative boards made by impregnating, coating, and curing resin on paper as a base material include melamine resin decorative boards, diallyl phthalate resin decorative boards, polyester resin decorative boards, printed plywood, and decorative sheets. Further classifying these by function, overlay paper, which is generally used for the purpose of protecting printed patterns and improving the characteristics of decorative laminates, and the base material layer of decorative laminates (plywood, particle board, gypsum board, aluminum plate, steel plate) Underlay paper (used for the purpose of shielding between the base material layer and resin), patterned paper that optically and physically shields the surface of the veneer, and also has a pattern of natural wood or natural stone printed on the surface and serves as a decoration for decorative laminates. These include barrier paper), core paper that serves as the base material layer for resin decorative boards, and balance paper that prevents laminated boards from warping.

Among these, pattern paper plays the most important role in expressing the appearance of resin decorative boards, and various decorative patterns are printed on the surface using various printing techniques. The woodgrain pattern printed on this patterned paper imitates the woodgrain pattern found on natural wood grain boards, grain boards, plywood, etc. There are many types of woodgrain patterns, and they can be used to express the characteristics of various wood species. Research is currently being carried out. In particular, the surface embossing found on recent vinyl chloride decorative boards is an attempt to bring out the realism of natural wood by using a three-dimensional effect, and although it has been somewhat effective, it does not match the grain pattern of each wood. An embossed pattern is required, which is expensive and uneconomical. In addition, a wood grain highlighting decorative board (Japanese Patent Laid-Open No. 58-84709) in which the surface is coated with a lustrous pigment or coloring agent such as pearl pigment has been devised, but pearl pigment is expensive and it is not practical. As the field of application expands, demands for a more authentic appearance for resin decorative laminates are increasing, and there are expectations for the development of new methods that reduce manufacturing costs and simplify processes.

The present invention is characterized by incorporating crepe paper into the surface material in order to express a woodgrain pattern that brings the surface appearance closer to the realism of natural wood without changing the manufacturing process of conventional resin decorative boards. The present invention provides a wood-grain resin decorative board. More specifically, the oriented wrinkle pattern and unevenness found on the surface of crepe paper can be used to express a woodgrain effect, or the surface of crepe paper can be printed with a woodgrain effect. You can create a delicate woodgrain effect, or layer patterned paper or back-coated overlay paper with a woodgrain pattern on top of the crepe paper to create a three-dimensional effect using the wrinkled pattern and unevenness of the crepe paper. The objective is to provide a resin decorative board that expresses a wood grain tone.

Until now, crepe paper has been used as a core for post-forming resin decorative boards to improve bending workability. There is no resin decorative board used as a toning pattern or to emphasize the woodgrain tone.

In general, crepe paper is a processed paper developed to improve the physical properties of paper, such as folding durability, tear strength, elongation, and flexibility. There is a wrinkled pattern of wood fibers with a discontinuous and irregular shape, and when the crepe paper is layered on patterned paper with shielding properties to make a resin decorative board, fibers appear in the crepe paper's wrinkled areas and in the non-wrinkled areas. The difference in shading of the shapes is abrasive, and the woodgrain pattern seen on the surface of plywood is expressed.

Furthermore, the surface of crepe paper has uneven wrinkles, and its orientation matches the crepe paper's wrinkle pattern, so when processed as a resin decorative board, the woodgrain tone expressed will be different. Not only does it enhance the orientation of the wood fibers, it also expresses the hard and soft parts of the wood three-dimensionally, creating a realistic feel closer to that of natural wood.

The fineness and coarseness of the wrinkle pattern on crepe paper are controlled by the crepe rate during crepe processing, and the higher the crepe rate, the finer the wrinkle pattern and the greater the number of unevenness.

Table 1 shows that crepe paper with varying crepe ratio by changing the basis weight of the original fabric was used, and the crepe paper was laminated on resin-impregnated core paper and pattern paper, and pressed under heat and pressure to produce a resin decorative board. This shows the residual wrinkle pattern of crepe paper over time.

Table 1 Crepe rate and residual degree of wrinkle pattern after resin decorative board processing From these results, it was found that the effects of the present invention can be obtained by using crepe paper with a basis weight of 20 g/- or more and a crepe rate of 10% or more. In addition, it has been found that in resin decorative boards using materials with a high crepe ratio, the unevenness of the crepe paper remains on the surface even after processing, and the effect of expressing the decorative pattern more three-dimensionally can be obtained at the same time.

There are two methods of processing crepe paper: a wet method and a dry method, and there are cases where the crepe is applied horizontally and vertically, but in either case, the effects of the present invention are hindered. isn't it.

In addition to wood pulp GP and chemical pulp, crepe paper can also be made from paper mixed with synthetic fibers.Depending on the purpose, paper-making chemicals, fillers, coloring dyes, and coloring can be used during manufacturing to increase strength and improve decorative effects. Pigments, lustrous pigments, etc. are added, but these do not hinder the effects of the present invention on resin decorative boards. The use of crepe paper colored in a color other than the raw material color, or crepe paper whose surface is printed with a solid print or a woodgrain pattern, is very effective in increasing the decorative effect of the present invention. Furthermore, the crepe paper itself can be pressed and finished so that the wrinkle pattern on the surface does not disappear, making it easier to print.

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

Figure 1 shows a patterned paper 2 with a shielding effect on a core paper 3.
, and crepe paper l is further laminated on top of that. Crepe paper in this case is crepe paper made of unbleached pulp or bleached pulp, crepe paper that has been colored or printed on the surface, crepe paper that has been smoothed on the surface with wrinkles remaining by super treatment, etc., or crepe paper made of pearl pigment. Crepe paper, etc., is used, which is made by twisting the inside and outside of a glossy pigment such as

In order to express the wrinkled pattern of crepe paper as a decorative pattern, it is desirable to use crepe paper with a basis weight of 20 g/- or more and a crepe rate of 10% or more.

Normally, patterned paper requires both shielding and decorative properties, but the present invention does not care about the decorative properties. For this reason, conventional patterned paper can be used as the patterned paper used in the present invention, but it can be used as long as it has good shielding properties, so there is no need to consider printing suitability as with conventional patterned paper.

As shown in Figure 1, the resin decorative board obtained by laminating core paper, pattern paper (shielding paper), and crepe paper has the oriented wrinkle pattern and irregularities seen on the surface of crepe paper pressed flat. As a result of being molded, the surface of the resin board has a wood grain pattern similar to that seen on plywood (veneer board).

In FIG. 2, an overlay paper 7 is laminated on the surface of the structure shown in FIG. 1, and a protective layer is provided on the surface.

In Figure 3, core paper 3, crepe paper 11 pattern paper (shielding paper) 2, and overlay paper 7 are stacked in this order.In this case, the crepe paper's wrinkle pattern does not directly serve as the surface decoration of the resin decorative board. However, you can see the effect that the unevenness of the crepe paper gives the surface a three-dimensional appearance.

Basically, with the configuration shown in Figure 1, a resin decorative board with a crepe paper wrinkle pattern as a woodgrain decoration can be obtained, but in order to further emphasize the crepe paper wrinkle pattern and increase the decorative effect, crepe paper It is preferable to provide a layer of glossy pigment such as a pearl pigment on the surface material itself, the upper and lower surfaces that come into contact with the crepe paper, or either one of the surface materials. Figure 4 shows a layer of glossy pigment 5 such as pearl pigment provided under crepe paper l.The resin decorative board produced with this configuration has the effect of emphasizing the shading of the crepe paper wrinkle pattern even more. It will be done.

Fig. 5 shows a layer of glossy pigment 5 such as pearl pigment provided on the upper surface of crepe paper 1. The resin decorative board produced with this structure has a deep decoration, although the crepe paper's wrinkle pattern is slightly canceled out. You can get the pattern. A lustrous pigment such as a pearl pigment may be added internally or externally to the crepe paper itself, or may be added internally or externally to a patterned paper used as a shielding paper.
Alternatively, it can be provided by laminating the inside and outside of another paper.

Figure 6 shows the basic configuration of Figure 1 with a patterned paper 6 printed with wood grain on top, and Figure 7 shows an example of applying the configuration of Figure 6 to a high-pressure melamine resin decorative board. It shows. The orientation of the crepe paper's wrinkled pattern and unevenness is arranged in the same direction as the orientation of the wood fibers of the woodgrain pattern of the printed matter. The resin decorative board obtained in this way has an uneven surface due to the wrinkled pattern and unevenness of the crepe paper inside, and the woodgrain printing area is expressed three-dimensionally, so it can express a more realistic woodgrain tone. I can do it. As the patterned paper for printing used in this configuration, in addition to conventional paper mixed with titanium oxide, natural pulp paper containing no filler, paper mixed with synthetic fibers, etc. can be used. It is particularly effective to use patterned paper with wood grain printed on the overlay paper.

Figure 8 shows normal overlay paper 7 on top of crepe paper 1.
This shows a laminated structure with a back coat with a woodgrain pattern.

It has the effect of having a three-dimensional woodgrain effect as well as having a protective layer for the printed surface.

9 and 10, a glossy pigment layer 5 made of pearl pigment or the like is provided on either the upper or lower side in contact with the crepe paper l, and on top of that, an overlay paper 8 with wood grain printing or pattern paper with wood grain printing is provided. The resulting resin decorative board combines the three-dimensional decorative effect of the crepe paper and the glossiness of the glossy pigment, and emphasizes the woodgrain pattern more realistically.

It is effective to use glossy pigments such as pearl pigments to make the crepe paper's wrinkle pattern deeper, but it is effective to use a glossy pigment such as a pearl pigment. Layering layers is disadvantageous from both a process and an economic standpoint. For this reason, FIG. 11 shows the functions of these three layers combined into one. Crepe paper with internal and external additions of fillers such as titanium oxide and lustrous pigments such as pearl pigments9
A similar effect can be obtained by using .

Currently, resin decorative boards include high-pressure melamine decorative boards, short cycle melamine decorative boards, diallyl phthalate decorative boards, polyester decorative boards, etc., and the present invention can be used for any of these decorative boards. Furthermore, there are many possible combinations of surface materials and crepe paper used in these decorative laminates, and the combinations are not limited to the few listed here.

Next, embodiments of this invention will be described.

Example 1 (product equivalent to Figure 1) Weighing 77g/I+? , a crepe paper made of unbleached pulp with a crepe ratio of 57%, a patterned paper with a basis weight of 30 g/J, which is made by adding 15% titanium oxide to a bleached bulb, and a basis weight of 2.
Using fur paper made of unbleached bulbs of QOg/J, impregnated with commercially available melamine resin, coated and dried, layered with core paper, pattern paper, and crepe paper in this order, and heated at 160℃ for 60 minutes.
A resin decorative board was prepared by heat and pressure treatment for 20 minutes under the condition of kg/cJ. As a result, a wood-grain resin decorative board was obtained in which the wrinkle pattern of crepe paper is similar to the fiber pattern expressed on plywood (veneer board).

Example 2 (product equivalent to Figure 1) Base paper basis weight 20g/n? , Ri Og/n? , 80g
/n? Crepe paper was made using unbleached kraft paper with various crepe ratios, and fur paper impregnated with melamine resin, titanium paper (pattern paper of Example 1), and crepe paper were stacked in this order under the specified conditions. A resin decorative board was prepared by applying heat and pressure treatment. As a result, the condition of the wrinkled pattern of the original crepe paper that remains when it is made into a decorative board is the first.
The results are shown in the table.

From this result, the crepe paper to be used has a basis weight of 20
It was found that a crepe ratio of 1r/IIV or more and a crepe rate of 10% or more are required.

Example 3 (product equivalent to Figure 1) 0.5% of commercially available tea-based direct dye was added to bleached pulp,
After papermaking with a basis weight of 50g/IIi, the paper was crepe-processed with a crepe rate of 30%, and resin-impregnated core paper, pattern paper, and crepe paper were laminated in this order and heat-pressure treated under specified conditions. A resin decorative board was prepared using the following methods.

As a result, a wood-grain resin decorative board with a plywood pattern of a different tone from that of unbleached pulp crepe paper was obtained.

Example 4 (product equivalent to Figure 1) Unbleached kraft paper 50g/n? Crepe rate 5 made with
0% crepe paper is treated with a normal paper-making pressure machine and compressed mainly in the thickness direction to smooth the surface of the paper so as not to erase the wrinkle pattern caused by the crepe process. Wood grain printing with a board grain pattern was applied to the surface, with the orientation direction of the fibers of the wood grain pattern coaxially aligned with the orientation direction of the pattern. Next, the resin-impregnated fur paper, the pattern paper, and the crepe paper were laminated in this order and subjected to heating and pressure treatment under specified conditions to produce a resin decorative board. As a result, we obtained a resin decorative board with a natural-looking wood grain surface in which the light and shade areas of the woodgrain print interact in a complex manner with the oriented wrinkle pattern and unevenness of the crepe paper.

Example 5 (product equivalent to Figure 5) 50g/I+ with 20% pearl pigment added to unbleached pulp
? kraft paper was crepe-processed with a crepe rate of 50%. Next, the resin-impregnated core paper, pattern paper, and the crepe paper were laminated in this order, and heated and pressurized under specified conditions to produce a resin decorative board.

Ta. As a result, a resin decorative board with a glossy surface and a plywood-like decoration was obtained.

Example 6 (corresponding to Fig. 2) Core paper, patterned paper (shielding property), crepe paper with a crepe rate of 80% at 50 g/nt made of unbleached pulp, and overlay paper were each impregnated with resin, and in this order. When a resin decorative board was produced by laminating them, a resin decorative board with a protective layer on the surface and a woodgrain pattern was obtained.

Example 7 (corresponding to Fig. 3) Core paper, crepe paper made of unbleached pulp with a crepe rate of 80% at 50 g/J, pattern paper, and overlay paper were each impregnated with resin and laminated in this order. When a resin decorative board was produced, a resin decorative board with a protective layer on the surface and an uneven pattern in a wood grain pattern was obtained.

Example 8 (product equivalent to Figure 4) Colored and pressed to crepe rate of 110%, basis weight 50g
/n? fur paper using crepe paper, patterned paper coated with pearl pigment on the surface, the crepe paper impregnated with resin,
When a resin decorative board was produced by laminating the sheets in this order, the crepe paper's crepe paper surface wrinkle pattern increased its luster, resulting in a resin decorative board that expressed a colorful and more realistic woodgrain tone.

Example 9 (product equivalent to Fig. 5) 20% pearl pigment is blended with bleached pulp, basis weight 40 g/n
? A pearl pigment-mixed paper of
0% crepe paper and pearl pigment mixed paper were each impregnated with resin and laminated in this order to create a resin decorative board.
A resin decorative board with a glossy surface and a deep woodgrain pattern was obtained.

Example 1-0 (product equivalent to Fig. 6) Weighed 50 made of core paper, patterned paper, and unbleached pulp
g/11? , crepe paper with a crepe ratio of ioo%, and 40g/- plain paper made from bleached pulp were each impregnated with resin and patterned paper with a woodgrain print on the surface was laminated in this order to create a resin decorative board. A three-dimensional and realistic woodgrain resin decorative board with uneven shapes was obtained.

Example 11 (corresponding to Figures 7 and 8) Crepe paper with a crepe ratio of 50%, consisting of resin-impregnated core paper, pattern paper, and 50 g/J unbleached kraft paper, has a grain-like wood grain pattern as a background. Using coated and resin-impregnated overlay paper, align the wrinkle pattern orientation direction of the crepe paper with the grain direction of the overlay paper, which is back-coated in a concave pattern, so that they are coaxial, and then apply the core paper, pattern paper, and overlay paper in that order. They were laminated and subjected to heat and pressure treatment under specified conditions to produce a resin decorative board. As a result, a wood-tone resin decorative board with a natural feel and emphasizing the fiber orientation on the surface was obtained.

Example 12 (product equivalent to Fig. 9) 20% pearl pigment is added to the bleached bulb, and the basis weight is 4θg/d.
Core paper, pattern paper, pearl pigment mixed paper, 50g/- crepe paper with a crepe rate of 50%, and overlay paper back-coated with wood grain were impregnated with resin and laminated in this order. When a resin decorative board was produced, the surface had an uneven woodgrain pattern and was also glossy.

Example 13 (product equivalent to Fig. 10) 20% pearl pigment is added to the bleached bulb, weighing 40 g/J
We made pearl pigment mixed paper, fur paper, pattern paper, 50g/ll? Crepe paper with a crepe ratio of 100%, pearl pigment mixed paper, and overlay paper with a woodgrain backcoat were each impregnated with resin and laminated in this order to create a resin decorative board. A resin decorative board with a deep texture was obtained.

Example 14 (product equivalent to Fig. 11) A crepe paper with a crepe ratio of 70% and a basis weight of 50 g/+J was prepared by blending 15% titanium oxide and 15% pearl pigment with bleached pulp, and a core paper, the crepe paper, When we created a resin decorative board by impregnating overlay paper with a woodgrain backcoat and laminating them in this order, we were able to obtain a realistic resin decorative board with an uneven woodgrain pattern on the surface and a glossy finish. It was done.

As described above, the present invention is epoch-making compared to the conventional production of woodgrain decorative resin laminates, and is effective even with commercially available crepe paper. It has commercial value as a board, and is expected to expand its application fields. A particular advantage is that (1) when molding a resin decorative board, an uneven pattern can be obtained on the surface without using an embossed board for the mirror surface, making it possible to more realistically express the printed wood grain. ■The wrinkle pattern on the surface of the crepe paper can be used as a decoration for the resin board. ■By controlling the crepe rate, the size of various wrinkles can be controlled, and the degree of woodgrain expression can be controlled. ■Low manufacturing cost.

■Can be applied to various decorative boards. ■ Conventional patterned paper can be used as a barrier layer, but its practicality is extremely high, as it is of excessive quality and can also be used with lower-grade patterned paper that is not suitable for printing.

[Brief explanation of the drawing]

The figures are all sectional views with some parts emphasized to show the configuration of the present invention. Figure 1 shows the basic configuration of the present invention, and Figure 2 shows the basic configuration of the present invention.
Figures 5 to 5 show examples of its application. Figure 6 shows the basic configuration for expressing woodgrain patterns more realistically, Figure 7 shows an example of application in high-pressure melamine decorative board, and Figures 8 to 11 show examples of combined application. It is something. l... Crepe paper 2... Pattern paper (shielding paper) 3... Core paper 4... Balance paper 5... Glossy pigment layer 6... Printed pattern paper 7... Overlay paper Death - Printed overlay paper 9... Crepe paper A with internal and external twists of fillers and glossy pigments →
... Wrinkle direction of crepe paper B → ... Fiber flow direction of woodgrain printing Patent applicant: Tomoekawa Paper Mills Co., Ltd. ￥7 *'flN '1ltotr ￥HlΔ

Claims (9)

[Claims] (1) A wood-grain resin decorative board consisting of a surface material and a base material, which incorporates crepe paper into the surface material (excluding cases where crepe paper is used only as a core). (2) The wood-grain resin decorative board according to claim 1, characterized in that crepe paper is used as the top layer of the surface material. (3) The wood-grain resin decorative board according to claim 1, characterized in that crepe paper with wood-grain printing is used. (4) The wood-grain resin decorative board according to claim 1, characterized in that pattern paper or overlay paper having wood-grain printing is layered on crepe paper. (5) The wood-grain resin decorative board according to claims 1 to 4, characterized in that the crepe paper has a basis weight of 20 tt/li or more and a crepe rate of 10% or more. (6) Claims 1 to 4 in which the crepe paper is made of wood pulp alone or a mixture of wood pulp and synthetic fibers.
Woodgrain resin decorative board as described in the section. (7) The crepe paper is made by a wet crepe method or a dry crepe method, and is creped in the vertical or horizontal direction of the paper.
The wood-grain resin decorative board described in item 4. (8) Crepe paper contains paper-making chemicals, coloring dyes, coloring pigments,
The wood-grain resin decorative board according to any one of claims 1 to 4, characterized in that at least one type of glossy pigment is twisted internally and externally. (9) Claim 1, characterized in that the crepe paper is pressure-treated to the extent that the wrinkle pattern on the surface does not disappear.
The wood-grain resin decorative board according to items 4 to 4.