JPS63107780A - Manufacture of decorative material - Google Patents

Abstract

PURPOSE:To provide a variety-rich appearance by creating a powder resin layer on the surface of a decorative plywood, thermally pressing said layer into a resin film and adding a decoration to the resin film. CONSTITUTION:Decorative plywoods such as walnut or zelkova is ground and colored, and at the same time, a lining material 2 is adhered to the rear surface of the plywood. Next a desired decorative layer 3 is provided on the surface of the decorative plywood 1 by means of silk screen printing or painting, and a powder resin layer 4 consisting of epoxy resin, phenol resin, etc. is built on the decorative layer. This decorative plywood 1 having the powder resin layer 4 is sandwiched with a parting film of vinyl fluoride resin. Then the powder resin layer 4 is thermally pressed with a hot press to melt the resin layer 4, and its part is allowed to penetrate into the interior of the plywood 1 with a resin film 5 formed on the surface. The parting film is stripped off after thermal pressing, and subsequently a desired decorative material 6 is obtained. The glossy or non-glossy types of the parting film is selected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for producing a decorative material that is an intermediate material for resin-treated veneer overlay plywood, which is a type of decorative plywood.

[Conventional technology]

A decorative product in which a powder thermosetting resin such as powdered epoxy resin is sprayed and fused onto the surface of a decorative veneer or veneer, and this is heat-pressured to form a resin film made of epoxy resin or the like on the surface of the decorative veneer. A method of manufacturing decorative plywood has been proposed in which the wood is splintered and then adhered to plywood such as lauan plywood or particle board to create decorative plywood. With this manufacturing method, the resin film replaces the top coat, and there is no need to apply another top coat to the decorative plywood, improving work efficiency.
It does not use organic solvents, so it is good for occupational hygiene, and has features such as being non-polluting.

[Problem that the invention seeks to solve]

However, the appearance of the decorative material obtained by this manufacturing method is only the original natural wood pattern such as decorative veneer, and the change in appearance is monotonous and lacking, and the two-dimensional experience of the pattern is undesirable.

Ninth Means for Solving Problem C] Therefore, in this invention, the above problem is solved by decorating the resin film with designs, patterns, etc.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 to 4 show a first example of the present invention, and reference numeral 1 in the figures indicates a decorative veneer. This decorative veneer 1 is a decorative wood veneer with a beautiful wood grain pattern such as walnut, rosewood, teak, souvre, zelkova, oak, etc., and has a float of about 0.2 to 0.8 U. . For this decorative veneer 1.

Grinding treatment and coloring treatment are performed. ′The grinding process is divided by ÷
Decorative veneer 1 using 180~÷240 abrasive paper! ! This is done by polishing the surface. This polishing eliminates various defects caused by previous machining, such as knife scratches, knife marks, and plane pillows. Coloring treatment involves dissolving pigments and dyes in water or T1 solvent, adding a small amount of resin to this, and applying the coloring liquid to the surface of the decorative veneer by brushing, spraying, wiping, etc. This is done by adjusting the surface color of the decorative veneer 1 beautifully. Furthermore, as shown in FIG. 1, on the back side of this decorative veneer 1, in order to prevent the veneer 1 from cracking, warping, etc., a synthetic fiber such as acrylic fiber with a basis weight of 20 to
A backing material 2 such as non-woven fabric or Japanese paper of about 100 #/fi is adhered. This backing material 2 is bonded with a vinyl acetate resin adhesive.

This is done using an adhesive such as a melamine resin adhesive or an area resin adhesive.

A decorative layer 3 is then provided on the surface of such a decorative veneer l as shown in FIG. The formation of this decorative layer 3 is as follows:
Printing by screen printing, gravure printing, offset printing, etc., paint, and indium dP.

This is done by creating desired designs, letters, patterns, etc. by drawing with paint. The vehicle for printing ink, paint, paint, etc. that forms this decorative layer 3 is one whose main component is an epoxy resin, a polyurethane resin, or a thermosetting resin such as an ultraviolet curable polyurethane acrylate resin or an epoxy acrylate resin. It is necessary to prevent the printing ink, etc., from melting or swelling during post-processing such as heating, thereby preventing the decorative layer 3 from collapsing and becoming unclear. Moreover, the thickness of the decorative layer 3 is 10 to 1
The thickness is about 00 μm, and three-dimensional decoration can be achieved by setting the thickness to around 30 μm.

Then, a powder resin layer 4 is provided thereon as shown in FIG. This powder resin layer 4 is made of resins such as thermosetting resins such as epoxy resin, epoxy polyester resin, epoxy phenol resin, phenol resin, and acrylic resin, and thermoplastic resins such as polyvinyl chloride resin, polystyrene resin, and acrylic resin. Powder with particle size lO~300μm?
, the surface of the decorative veneer 1 is coated with about 100 to 300 p/m of Nil by electrostatic coating method or drop spraying method, heated for a short time at high temperature, and the decorative veneer 1 is left in a state where it retains its heat-melting property.
It is obtained by welding to. Infrared heating furnaces, induction heating furnaces, etc. are used for this high-temperature heating. Among powder resins, mixed epoxy resins of novolak type epoxy resin and bisphenol A type epoxy resin,
A fast-curing material containing an imidazole such as 2-ethyl-4-methyl-imidazole as a curing agent is suitable. When using powder epoxy resin (1), powder resin l1a4 can also be formed by first applying liquid epoxy resin to the surface of decorative veneer 1 and then scattering powder epoxy resin on top of this. can.

Furthermore, a paste mixture prepared by mixing powder epoxy resin and liquid epoxy resin in a predetermined ratio is applied to the surface of the decorative veneer l using a coating means such as a roll coater or a doctor blade, thereby forming a powder resin layer 4. It is also possible to do this.

The decorative veneer 1 on which the powder resin layer 4 has been formed is then inserted with a release film made of vinyl fluoride resin, etc., and subjected to heat and pressure treatment using a hot press or the like to form the powder resin layer 4. Melted and part of it? It penetrates into the inside of the veneer 1 and forms a resin film 5 on the surface. The resin film 5 is a decorative veneer 1
It is preferably colorless and transparent or light-colored and transparent so that the pattern on the surface can be visually recognized.

Its thickness is approximately 100 to 300 μm.

The heat-pressure treatment conditions can be appropriately determined depending on the type of powder resin used in the decorative veneer 11, and the like, but in the case of using the above-mentioned epoxy resin, the temperature is 120-140°C, the time is 5-10 minutes, and the pressure is 0. Approximately .2 to 1.5 MP&. After heat and pressure treatment,
When the release film is peeled off, a decorative material 6 in which the resin film 5, decorative layer 3, decorative veneer 1, and backing material 2 are laminated and integrated as shown in FIG. 4 is obtained. If a glossy film is used as the release film, a glossy decorative material 6 will be obtained, and if a non-glossy film is used, a matte decorative material 6 will be obtained.

Furthermore, powder resin layers 4 may be formed on both sides of the decorative veneer 1 during the heat-pressure treatment, and the adhesion of the backing material 2 to the decorative veneer 1 may be performed simultaneously with the formation of the resin film 5.

In such a manufacturing method for decorative materials, a decorative layer 3 exists on the lower surface of the resin Bs between the decorative veneer 1 and the resin film 5, and the pattern of the decorative layer 3 is added to the wood grain pattern of the decorative veneer 1. A decorative material 6 with overlapping patterns and a unique appearance is obtained. Maku, decoration layer 3
is protected by the resin film 5, so there is no inconvenience such as wear and tear.

5 to 7 show a second example of the manufacturing method of the present invention. The manufacturing method of this example is as shown in Fig. 5, which involves grinding and coloring, lining the back side with lining material 2, and then directly applying powder resin layer 4 on the surface of decorative veneer 1, which is then heat-pressed. The resin is processed to form resin M5 as shown in FIG. Next, as shown in FIG. 7, this resin film 5! ! ! A decorative layer 3 is provided on the surface.

According to this manufacturing method, the position of the wood grain pattern on the surface of the decorative veneer 1 and the decorative layer 3 is different, and the decorative layer 3 is located in the front.
The designs, patterns, etc. created by the decorative RA3 appear to stand out on the wood grain pattern, resulting in an extremely three-dimensional appearance. Since the decorative layer 3 is located at the outermost layer, there is a possibility that the decorative layer 3 may be damaged by scratches or the like. Therefore, it is desirable to form it on the decorative layer 3 which is a preservation layer. On the other hand, since it is the outermost layer, it is easy to repair the decorative layer 3 and adjust the vA. The protective layer may be coated with a polyurethane resin, unsaturated polyester resin paint, or the like, or coated with a polyethylene protective film.

8 to 10 show a third example of the manufacturing method of the present invention. In this example, a decorative thin cloth 7 as shown in FIG. 8 is prepared. This decorative thin fabric 7 is applied onto a thin fabric 8 such as thin Japanese paper or acrylic nonwoven fabric having a basis weight of about 15 to 30.9/la in the same manner as in the first example.
43'. Next, the grinding process and coloring process are performed, and the back side is lined with lining material 2, and the next decorative veneer l
When forming the powder resin layer 4 on the surface of the powder resin layer 4, the decorative thin cloth 7 is inserted into the powder resin layer 4 as shown in FIG.

Next, this is subjected to heat and pressure treatment in the same manner as in the previous example to obtain a decorative material 6 in which a decorative thin cloth 7 is inserted within the resin film 5. C 10th
Figure) In the manufacturing method of this example, the decorative thin cloth 7 is placed in the resin film 5.
The thin leaf-like cloth 8 is completely buried and in a state in which its existence cannot be seen from the outside, and the design and pattern of the decorative layer 3 stand out on the wood grain pattern on the surface of the decorative veneer 1, creating a three-dimensional appearance. become visible. In addition, the decorative layer 3 is made of resin H! s5
Since it is inside, it is protected by resin Ix5 and enters a mental state, and Decoration/13 will not be damaged. Furthermore, since the decorative thin cloth 7 can be left in a separate process, productivity can be increased.

Fig. 11 to Fig. 11 show 840 examples of the present invention. In this example, similarly to the third notice, a decorative thin cloth 7 is prepared, and the front and back sides of this are coated as shown in Fig. 11. A powder resin layer 4.4 is formed on. Then, as shown in FIG. 12, this is subjected to a grinding process and a coloring process, and a backing material 2 is placed on the surface of the decorative veneer 1, and a decorative material 6 is obtained by heat-pressing treatment in the same manner. Similarly to the example of 1g3, the designs and patterns of the decorative layer 30 stand out on the wood grain pattern, making them look two-dimensional.

[Example] (Example 1) American walnut veneer (thickness 0
．． 2) on the back side of vinylon nonwoven fabric C basis weight 3 (jJi'/
m), 100 parts by weight of vinyl acetate resin, 10 parts by weight of urea resin
Glue with an adhesive consisting of 0 parts of FIL and 1 part of Rika Ammonium. The amount of adhesive applied is 100J/karasu2,
Adhesion conditions FX: 110℃, pressure (L7MPa%7MP
a and ratio. Then, the surface of the veneer was ground with 240 grit abrasive paper and colored with an oil-based dye. A design is printed on the surface of this material by screen printing using epoxy resin printing ink to form a decorative layer. Next, solid epoxy resin (Epicoat 1004) was applied onto this decorative veneer.
3 parts by weight of 2-ethyl-4-methyl-imidazole was blended with 100 parts by weight, pulverized into a 100 mesh bath, and electrostatically coated with 9 powder epoxy resin to a basis weight of 200.9/Ia2.
It was heated for 20 seconds in a far-infrared heating furnace (panel temperature: 450°C) to melt and fuse.

Next, this veneer was made of vinyl fluoride maf with a thickness of 25 μm.
It was inserted with release film A and subjected to heat and pressure treatment using a hot press.

The heat-pressure treatment conditions were a temperature of 130° C., a pressure of 1.0 MPa, and a time of 10 minutes. After cooling to room temperature, the pressure was released and the release film was peeled off, and a smooth resin film of about 180 μm in thickness made of epoxy resin was formed on the surface, yielding a decorative material.

This decorative material has a decorative layer design overlapping the natural wood grain pattern of the decorative veneer, giving it a unique appearance.

(Example 2) Powdered epoxy fat similar to that used in Example fl11 was melt-sealed to the surface of a veneer that had been lined in the same manner as in Example 1, and the surface had been subjected to grinding and coloring. It was made into a film. A pattern was printed on the surface of this resin film using the same printing method as in Example GA+1, a decorative layer was formed, and the decorative material was bound.

This decorative material has a pattern created by the decorative layer that stands out on top of the natural wood grain pattern of the decorative veneer, giving it an appearance that is rich in tactile sensations.

(Example 3) An acrylic fiber nonwoven fabric with a tsubo fi of 24.9/82 was used as the thin fabric, and a pattern was screen printed on one side of the fabric using epoxy resin printing ink to form a decorative layer. After manufacturing the 90-shaped cloth, it is lined, ground, and colored in the same manner as in Example 1, and when powder epoxy resin is applied electrostatically to the veneer, the above-mentioned decorated thin laminate cloth is coated with powder epoxy resin. It can be used to produce decorative materials by applying heat and pressure treatment to the resin.

The resulting decorative material has a decorative layer design that stands out on top of the natural wood grain pattern, giving it a three-dimensional appearance.

Moreover, the thin nonwoven fabric was completely embedded in the epoxy resin film, and its existence could not be visually recognized from the outside.

(Example 4) Powdered epoxy resin was similarly welded to the front and back surfaces of the nine-decorated thin fabric obtained in Example 3 in an amount of 100 g/2 parts. This material was layered on the veneer that had been used in Example 1 and had been subjected to lining, grinding, and coloring, and was similarly subjected to heat and pressure treatment to obtain a decorative material.

This decorative material has the same appearance as the decorative material obtained in Example fl+3.90 [Effects of the Invention] As explained above, the method for manufacturing the decorative material of this invention is to apply powder resin to the surface of the decorative veneer. Since layers are formed and heat-pressure treated to form a resin film, and this resin film is decorated, decorative materials with a wide variety of appearances can be obtained.

[Brief explanation of the drawing]

Figures 1 to 44 are schematic sectional views showing the first example of the manufacturing method of the present invention in process steps; Figures 5 to 7 are schematic cross-sectional views showing the second example of the manufacturing method of the present invention in the order of steps. Cross-sectional view 1 FIGS. 8 to 10 are schematic sectional views showing the third example in the same process order. FIGS. 11 and 12 are schematic sectional views similarly showing the fourth example in the process order. l...Decorative veneer 2...Backing material 3...Decoration layer 4...Powder resin layer 5...Resin film 6・・・・・・Cosmetic material.

Claims (6)

[Claims] (1) The process of grinding and coloring the surface of the decorative veneer and lining the back side; The process of providing a powder resin layer on the surface of the decorative veneer and heat-pressing it to form a resin film on the surface of the decorative veneer. and a method for producing a decorative material, comprising the step of decorating this resin film with designs, patterns, etc. (2) The surface of the resin film is decorated. A method for producing a decorative material according to claim 1. (3) The lower surface of the resin film is decorated. A method for producing a decorative material according to claim 1. (4) The interior of the resin film is decorated. A method for producing a decorative material according to claim 1. (5) A method for producing a decorative material according to claim 4, characterized in that a decorated thin cloth is inserted into the powder resin layer and then subjected to heat and pressure treatment. (6) The method for producing a decorative material according to claim 4, characterized in that a decorated thin cloth to which powdered resin is applied is placed on a decorative veneer and subjected to heat and pressure treatment.