JP4433584B2 - Cosmetic material having natural texture and method for producing the same - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a decorative material , and more particularly to a decorative material having a natural texture and a method for producing the same .
[0002]
[Prior art]
Conventionally, a decorative board that has been heat-pressed by laminating resin-impregnated decorative paper and resin-impregnated core paper and, if necessary, resin-impregnated surface paper is used as a means to change the surface design. In order to meet the diverse needs of the market, they were changed as appropriate, and the gloss and embossed shape of the metal plate and film used during molding were changed.
[0003]
[Problems to be solved by the invention]
However, the finish of the conventional decorative board depends on the pattern and color tone of the decorative layer, and the appearance with a more natural texture cannot be expressed on the printing paper and is flat. In addition, natural texture could not be expressed sufficiently even when using decorative paper mixed with artificial fibers such as rayon fibers and carbon fibers, and inorganic fibers.
[0004]
[Means for Solving the Problems]
The present invention has been studied in view of such circumstances, and is characterized by the following. That is, in order from the bottom , a resin-impregnated core paper as a core material , a resin-impregnated paper 5 as a background layer, and a resin obtained by mixing 20 to 40% by weight of a hemp fiber cut to 3 to 10 mm as a pattern layer It is a decorative material having a natural texture, characterized in that the Japanese paper 3 not impregnated and the resin-impregnated surface paper 1 as a surface layer are laminated and hot-pressed. Hereinafter, the present invention will be described in detail with reference to the drawings.
[0005]
FIG. 1 is a sectional view showing the construction of a decorative material 10 having a natural texture according to the present invention, and FIG. 2 is a schematic sectional view showing a manufacturing method. The surface layer is for protecting the pattern layer, and is usually obtained by impregnating a well-known surface paper for decorative board with a resin solution comprising a thermosetting resin such as diallyl phthalate resin, unsaturated polyester, amino-formaldehyde resin, and the like, and then drying the resin. Impregnated surface paper 1 is used.
[0006]
The pattern layer is used in a state in which Japanese paper 3 mixed with 20 to 40% by weight of fiber and chips of plant such as hemp, cotton, bamboo, straw, bark, and plant leaves is not impregnated with resin. It is sandwiched between resin impregnated papers 5. The resin contained in the resin-impregnated surface paper 1 and the resin-impregnated paper 5 permeates into the Japanese paper 3 at the time of hot pressure, and after molding, the portion not containing plant fibers and chips becomes transparent, and the resin impregnation of the background layer Since the color tone and pattern of the paper 5 are transparent, even if the same Japanese paper 3 is used, various finishes are obtained by appropriately changing the background layer. In addition, Japanese paper has fewer limitations on mixing compared to industrial paper, and can hold large mixed products with a low basis weight.
[0007]
The background layer is not particularly limited as long as the color tone of the core material can be concealed. For example, a decorative paper for a decorative board having a basis weight of 20 to 200 g / m ² and various patterns by coloring or printing, or Resin-impregnated paper 5 impregnated with the same resin solution as above is used for bleached kraft paper, unbleached kraft paper, etc. Especially, if resin-impregnated decorative paper is used, the transparency of Japanese paper is utilized and the color and pattern of the decorative paper are changed. By changing it, it becomes a diverse and diverse finish.
[0008]
With respect to the thermosetting resin impregnated in the surface paper or the decorative paper, it is particularly preferable to use an amino-formaldehyde resin from the viewpoint of surface physical properties such as heat resistance and wear resistance.
[0009]
Amino-formaldehyde resins include amino compounds such as melamine, urea, benzoguanamine, acetoguanamine, etc., initial condensates, etherification with lower alcohols such as methyl alcohol and ethyl alcohol, and paratoluene. Those modified with a reactive modifier that promotes plasticization such as sulfonamide can be applied.
[0010]
Examples of the core material include woody base materials such as MDF, particle board and plywood, inorganic base materials such as calcium silicate and gypsum board, metal plates such as aluminum plates, and resin-impregnated core paper 6. There are no particular restrictions on the material that can be. In FIG. 1, as a core material, a base material such as craft paper, non-woven fabric, and cloth provided for a decorative board is impregnated with a resin liquid composed of a thermosetting resin such as a phenol resin, an unsaturated polyester resin, or a melamine resin, Dry resin impregnated core paper 6 is used. When the resin-impregnated core paper 6 is adopted, among resins, a phenol resin excellent in strength, heat resistance and the like is particularly preferable. The phenol resin contains phenols and aldehydes with 1 aldehyde per mole of phenolic hydroxyl group. It can obtain by making it react under a basic catalyst in the ratio of -1.3 mol.
[0011]
Examples of phenols include phenol, cresol, xylenol, octylphenol, phenylphenol, bisphenol A, bisphenol S, and bisphenol F. Examples of aldehydes include formaldehyde, paraformaldehyde, glyoxal, and trioxal. In addition, those modified with a modifier that promotes plasticization such as parasulfonamide, tung oil, DOP, and TCP (tricresyl phosphate) can be applied as necessary. As basic catalysts, alkalis such as sodium and potassium can be used. Examples include metals, oxides and hydroxides of alkaline earth metals such as magnesium and calcium, and amines such as triethylamine and triethanolamine.
[0012]
The method for producing a decorative material having a natural texture according to the present invention will be described with reference to FIG. 2. Using a plurality of resin-impregnated core paper 6 as a core material, hemp, cotton, bamboo, straw, bark, plant leaves, etc. Japanese paper 3 mixed with plant fibers and chips is laminated in a state of being sandwiched between resin-impregnated surface paper 1 and resin-impregnated paper 5, and a release sheet 7 such as polypropylene film, PET film, aluminum foil is placed on the resin-impregnated surface paper 1 side. And a metal plate, a backing plate such as a plastic plate, or a cushion material 8 such as kraft paper 9 or cushion rubber, and a temperature of 100 to 200 ° C. and a pressure of 40 to ensure that the thermosetting resin in the impregnated paper is sufficiently cured. Hot pressing is performed in a range of 70 kg / cm ² and 40 to 120 minutes. Using a backing plate results in a flat finish, but using the cushioning material 8 reveals plant fibers and / or chip irregularities on the surface of the Japanese paper 3 on the surface layer, resulting in a richer undulating finish and a natural textured finish. Become. Furthermore, in order to enhance the design effect, the gloss of the release sheet may be changed as appropriate, and an embossed shape such as satin or wood may be added.
[0013]
Hereinafter, the present invention will be described in detail based on examples.
【Example】
Example 1
Melamine resin impregnated surface paper Melamine initial condensate with a molar ratio of formaldehyde to 1.5, 6 parts of paratoluenesulfonic acid amide, curing agent (Catanit A manufactured by Nitto Riken Kogyo Co., Ltd.), release agent 1 part - was added (separator Le manufactured 328 by Chukyo Yushi Co., Ltd.) to obtain impregnating melamine resin, as the amount impregnated into the surface paper having a basis weight of 23 g / m ² is 76 g / m ² in terms of solid content Impregnated melamine resin impregnated surface paper was obtained.
Melamine resin impregnated decorative paper Blue decorative paper having a basis weight of 100 g / m ² is impregnated with melamine resin for impregnation so that the impregnation amount is 100 g / m ^{2 in} terms of solid content and dried to obtain a melamine resin impregnated decorative paper It was.
Phenol resin impregnated core paper After the phenol / formaldehyde molar ratio was 1: 1.15 and reacted under sodium hydroxide to obtain a resol type phenol resin, the impregnation amount was converted to solid content on 185 g / m ² kraft paper. Was impregnated to 90 g / m ² and dried to obtain a phenol resin-impregnated core paper.
Manufacture of natural cosmetics 5 phenolic resin impregnated core paper, melamine resin impregnated decorative paper, hemp fiber cut into 3-10 mm and mixed with Japanese paper with hemp weight of 35 g / m ² The resin-impregnated surface paper is sequentially laminated, and the PET-impregnated surface paper side is placed with 20 sheets of kraft paper with a basis weight of 185 g / m ² , a temperature of 170 ° C., a pressure of 50 kg / cm ² , and a time of 100 minutes The decorative material having the natural texture of Example 1 was obtained. This decorative material had surface texture of hemp fibers and an excellent natural texture.
[0014]
Reference example 1
In Example 1, except that 20 sheets of kraft paper having a basis weight of 185 g / m ² was used, hot pressing was performed in the same manner to obtain a decorative material having a natural texture of Reference Example 1 .
[0015]
【The invention's effect】
According to the present invention, it is possible to obtain a decorative material having a natural texture that could not be obtained with conventional printing paper. In addition, Japanese paper can hold large mixed products with a lower basis weight than Western paper, and there are few restrictions on mixing, and it becomes transparent after molding if it is sandwiched between resin-impregnated surface paper and resin-impregnated decorative paper. By appropriately changing the color tone and pattern of the decorative paper, the background can be varied. Further, if a cushioning material is used without using a backing plate at the time of molding, the texture of the plant fibers and chips will appear on the surface, and it will be more attractive.
[0016]
Moreover, it helps to protect pulp resources by using non-wood fibers such as Kozo, Mitsumata, and Manila hemp.
[Brief description of the drawings]
FIG. 1 is a structural cross-sectional view of a decorative material 10 having a natural texture.
FIG. 2 is a cross-sectional view schematically showing a method for producing a decorative material 10 having a natural texture.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Resin impregnated surface paper 3 Japanese paper mixed with fiber of hemp 5 Resin impregnated paper 6 Resin impregnated core paper 7 Release sheet 8 Cushion material 9 Kraft paper 10 Cosmetic material with natural texture

Claims (5)

In order from the bottom, by impregnating a resin-impregnated core paper as a core material, a resin impregnated paper 5 as a background layer, a 20 to 40 weight cut fibers hemp 3 to 10 mm%混抄 resinous as a pattern layer A decorative material having a natural texture, characterized in that the Japanese paper 3 in an uncoated state and the resin-impregnated surface paper 1 as a surface layer are laminated and hot pressed. Decorative material having a natural texture according to claim 1, characterized in that represents the unevenness of fibers of the hemp in the surface layer. In order from the bottom, impregnated with resin impregnated core paper as a core material, resin impregnated paper 5 as a background layer, and resin mixed with 20 to 40% by weight of hemp fibers cut to 3 to 10 mm as a pattern layer A natural texture characterized by laminating uncoated Japanese paper 3 and resin-impregnated surface paper 1 as a surface layer, further laminating a release sheet 7 and a cushioning material 8, and performing hot-pressure molding without using a backing plate The manufacturing method of the cosmetics which has this. 4. The method for producing a cosmetic material having a natural texture according to claim 3, wherein the unevenness of the hemp fibers appears on a surface layer. The said cushioning material 8 is a craft paper, The manufacturing method of the decorative material which has a natural texture of Claim 3 or 4 characterized by the above-mentioned.

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