JP2004268284A - Process paper for surface finish - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide process paper for surface finish easily sorted and recovered after the production of a decorative sheet and constituted so as to put a metal such as an aluminum foil or the like and paper constituting the process paper to practical use as recycled resources. <P>SOLUTION: The process paper 1 used for applying transfer processing to the surface of the decorative sheet 2 is composed of a base material 5 comprising a metal foil, an adhesive layer 4 comprising the adhesive provided on the surface of the base material 5 and the transfer layer 3 comprising paper or cloth provided on the base material 5 through the adhesive layer 4. The adhesive has characteristics such that the adhesive strength thereof is lowered by the heating and pressure applied when the transfer processing of the transfer layer 3 is applied to the surface of the decorative sheet 2. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a surface finishing process paper for the purpose of forming a transferred surface of a decorative plate, for example, in the production of a decorative plate having a transferred surface used for a dining table, a conference table, a bay window counter, or the like. is there.
[0002]
[Prior art]
In order to give the surface of the decorative plate a high-grade appearance, in general, a surface finishing process paper in which paper is bonded on an aluminum foil between the metal plate and the surface of the decorative plate is often used. (For example, see Patent Document 1).
[0003]
Further, when the surface of the decorative plate is mirror-finished, for example, a method of using a mirror-finished metal plate when pressing the decorative plate has been used. On the other hand, a surface finishing process paper in which aluminum foil and paper are bonded between a metal plate and a decorative plate may be used.
[0004]
[Patent Document 1]
JP-A-2002-316397 (paragraph number [0002])
[0005]
[Problems to be solved by the invention]
However, one sheet of the surface finishing process paper is required to manufacture one decorative board, and after manufacturing the decorative board, it is discarded as waste. Although ordinary aluminum foil is easy to recycle, the surface finishing process paper requires time and effort to separate the aluminum foil and paper, and the recycling is expensive.
[0006]
That is, in the surface finishing process paper, in order to bond the paper and the aluminum foil, generally, an adhesive composed of starch paste, a vinyl acetate-based emulsion, and a part of a solvent type is used. In the manufacture of (1), the adhesive strength is increased to the same or higher by press molding (heating and pressing), and the aluminum foil of the surface finishing process paper and the paper are firmly bonded. For this reason, it has been difficult to separate the aluminum foil and the paper after the production of the decorative board, or the separation work has required a cost (time).
[0007]
Moreover, in the surface finishing process paper, since it is difficult to separate the aluminum foil and the paper, the aluminum foil has to be discarded as industrial waste without being separated, and has not been reclaimed and has been landfilled. Therefore, there is a problem that the aluminum foil and paper of the surface finishing process paper cannot be recycled as resources.
[0008]
Therefore, the present invention has been made in order to solve such a problem. The purpose of the present invention is to make it easy to separate and collect process paper after the production of a decorative board, and to make metal such as aluminum foil constituting the process paper. Another object of the present invention is to provide a surface finishing process paper that can utilize paper and the like as recycled resources.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 is a process paper used for performing a transfer process on a surface of a decorative board, wherein the substrate is made of a metal foil and the surface of the substrate An adhesive layer made of an adhesive provided in, provided with a transfer layer made of paper or cloth provided on the substrate through the adhesive layer, the adhesive, the surface of the decorative plate, the adhesive This is configured as a surface finishing process paper having a property that the adhesive force is reduced by heating and pressing when performing the transfer processing of the transfer layer.
[0010]
According to the above configuration, at the time of heating and pressing in the production of the decorative board, the irregularities of the transfer layer of the process paper are transferred to the surface of the decorative board, and the surface to be transferred is formed on the surface of the decorative board. In addition, the adhesive layer of the process paper impregnates the transfer layer (fiber layer of paper or cloth) with an adhesive component during heating and pressurization, and a part of the adhesive layer is vaporized, whereby the adhesive strength is reduced and the adhesive layer is broken. Is done. This facilitates the separation of the base material of the process paper and the transfer layer.
[0011]
According to a second aspect of the present invention, the adhesive is configured as a surface finishing process paper made of an acrylic-styrene-based adhesive.
[0012]
According to the configuration, the acrylic-styrene-based adhesive impregnates the transfer layer (a fiber layer of paper or cloth) and partially vaporizes at the time of heating and pressing in the production of a decorative board. Adhesion decreases. This facilitates the separation of the base material of the process paper and the transfer layer.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1A is a schematic diagram showing a configuration at the time of production of a decorative board using the surface finishing process paper, FIG. 1B is a schematic diagram showing a configuration after the production of the decorative plate, and FIG. FIG.
[0014]
The process paper for surface finishing according to the present invention (hereinafter, referred to as process paper) is for forming a transfer-receiving surface on the surface of a decorative plate described later. As shown in FIGS. 1A and 1B, the process paper 1 has a base material 5, an adhesive layer 4 made of an adhesive, and a transfer layer 3. In this configuration, the adhesive force is reduced by the heating and pressing of the metal mirror plates 8 and 8 when the transfer processing is performed.
[0015]
In addition, the base material 5 becomes uneven in accordance with the unevenness 3a of the transfer layer 3 described later by heating and pressing when performing the transfer process on the surface of the decorative board 2, and the uneven shape is transferred to the surface of the decorative board 2. In addition, it has an effect of preventing the transfer layer 3 from adhering to the surface of the decorative plate 2, and is made of a thin metal foil. Further, the decorative plate 2 side of the base material 5 may be either a glossy surface of a metal foil or a matt surface (back surface). Further, the base material 5 is a metal foil made of aluminum, copper, or the like having extensibility, etc., at which the metal foil can be easily manufactured, and is preferably an aluminum foil. The thickness of the substrate 5 is preferably in the range of 6 to 50 μm, more preferably 10 to 20 μm. Further, an olefin-based resin (for example, polypropylene, polyethylene terephthalate, etc.) may be used instead of the metal.
[0016]
Further, the transfer layer 3 has irregularities 3a for forming a transfer-receiving surface 6a on the surface of the decorative plate 2 (the decorative layer 6 described later) via the base material 5 when the decorative plate 2 is manufactured. The transfer layer 3 is made of a material that can be incinerated or recyclable because the transfer layer 3 is discarded as waste after the decorative board 2 is manufactured. For example, paper or cloth is commonly used. When the transfer layer 3 is paper, the thickness expressed in basis weight is preferably in the range of 13 to 60 g / m ² .
[0017]
The adhesive layer 4 is made of an adhesive for bonding and fixing the transfer layer 3 on the base material 5. Furthermore, the adhesive layer 4 impregnates the inside of the transfer layer 3 with the adhesive component of the adhesive layer 4 by heating and pressurizing the surface of the decorative plate 2 for transfer processing, and a part of the adhesive layer 4 is vaporized. It is made of an adhesive having the property of reducing the adhesive strength. As the adhesive having such characteristics, an acrylic-styrene-based adhesive and an acrylic-styrene-based emulsion-type adhesive are preferable.
[0018]
In the case of an acrylic-styrene adhesive, the thickness of the adhesive layer 4 is preferably 1 to 10 g / m ² expressed in terms of basis weight.
[0019]
Further, the application form of the adhesive for forming the adhesive layer 4 may be a form applied to the entire surface of the base member 5 by a manufacturing method described later, or a portion such as a stripe shape or a part coat shape on the surface of the base material 5. It may be in any of the forms to be applied. When an adhesive other than an acryl-styrene adhesive is used as the adhesive having the above-mentioned action, the thickness of the adhesive layer 4 may be appropriately changed from the above range.
[0020]
Further, a method of manufacturing the process paper will be described with reference to FIG. However, although FIG. 2 illustrates a laminating apparatus as an example of a process paper manufacturing apparatus, the process paper manufacturing apparatus of the present invention is not limited to FIG.
[0021]
As shown in FIG. 2, the base material 5 (metal foil) is sent from the feeding bobbin 11 to the pressure rollers 15, 15 via the application rollers 12, 12. Since the lower part of one of the upper and lower application rollers 12 is immersed in the adhesive tank 13, the adhesive 4 a adheres to the roller surface by the rotation of the application roller 12. An adhesive 4a is applied to a surface of the base material 5 (metal foil) facing the transfer layer 3 between the substrates 12.
[0022]
Further, the transfer layer 3 (paper or the like) is sent from the feeding bobbin 14 to the pressure bonding rollers 15, 15. Then, the base material 5 (metal foil) to which the adhesive 4a is applied and the transfer layer 3 (paper or the like) are pressure-bonded by a pair of upper and lower pressure rollers 15. Then, the adhesive 4a is dried and solidified in the drying furnace 16 to form an adhesive layer, and the base material 5 (metal foil) and the transfer layer 3 (paper or the like) are integrated (laminated) via the adhesive layer. Paper 1 (laminate sheet) is manufactured. Then, the manufactured process paper 1 (laminated sheet) is wound around the winding bobbin 17.
[0023]
Further, the process paper 1 (laminate sheet) is not limited to the form wound on the winding bobbin 17 and may be cut by a cutter or the like in accordance with the shape of the decorative board 2 as shown in FIG. No (not shown). Although the adhesive 4a is applied to the base material 5 (metal foil) in FIG. 2, a method of applying the adhesive 4a to the transfer layer 3 (paper or the like) may be used (not shown).
[0024]
Next, the decorative board will be described. The decorative board in which the process paper of the present invention is used is used for, for example, surface decoration of a dining table, a conference table, a bay window counter, etc., and has excellent stain resistance, abrasion resistance, heat resistance, water resistance, impact resistance, and the like. It has the characteristics described above. Then, as shown in FIG. 1B, the decorative plate 2 is composed of a decorative layer 6 on which a transferred surface 6a is formed, and a core layer 7. Further, as long as the decorative board has the above characteristics, it is not limited to the configuration of FIG.
[0025]
Further, the decorative layer 6 and the core layer 7 are formed of, for example, an unsaturated polyester resin, a diallyl phthalate resin, an epoxy resin, a melamine resin, a phenol resin, a vinyl chloride resin, etc. The decorative layer is more preferably a melamine resin, and the core layer is more preferably a phenolic resin.
[0026]
Specifically, the decorative layer 6 is formed by impregnating and applying about 50% by mass of a melamine-based resin liquid to a colored paper obtained by mixing a pigment with kraft pulp and a printing paper obtained by printing a pattern on the colored paper. It is a melamine-based resin impregnated coated paper manufactured by the above. The basis weight of colored paper and printing paper is preferably from 60 to 160 g / m ² , and the pigment is preferably from 5 to 50% by mass. Also, the impregnating coater has a crocodile pad for storing the melamine-based resin liquid, an impregnating section comprising a helical rod and a doctor blade for adjusting the amount of adhered resin, and a hot air circulation type drying body for drying while conveying the resin impregnated coated paper. , And a cutting portion that is cut to a certain size and stacked. Further, the melamine-based resin liquid may contain a curing catalyst and a release agent.
[0027]
The core layer 7 is, specifically, a phenolic resin impregnated coated paper manufactured by impregnating and coating an unbleached kraft paper with a phenolic resin liquid by about 30% by mass using an impregnating coating machine. And the basis weight of kraft paper is preferably 180 to 250 g / m ² . The impregnating coater has the same structure as that of the melamine resin liquid impregnating coater.
[0028]
Further, a method of manufacturing a decorative board will be described with reference to FIGS. As shown in FIGS. 1A and 1B, the process paper 1 manufactured by the manufacturing apparatus of FIG. 2, the decorative layer 6 (melamine resin impregnated coated paper) and the core layer 7 (phenol resin impregnated coated paper) ) Are laminated between the metal mirror plates 8, 8 (specifically, stainless steel plates). Next, the process paper 1, the decorative layer 6 and the core layer 7 are heated and pressed by the metal mirror plates 8 and 8.
[0029]
By this heating and pressing, the irregularities 3a of the transfer layer 3 of the process paper 1 are reflected on the base material 5, the irregularities 3a are transferred to the decorative layer 6 in contact with the base material 5, and the transferred surface 6a is formed on the surface of the decorative plate 2. It is formed. At the same time, the adhesive component of the adhesive layer 4 of the process paper 1 evaporates, penetrates into the inside of the transfer layer, and is thermally degraded, so that the adhesive strength is reduced and the adhesive layer 4 is broken.
[0030]
After the heating and pressurization, the process paper 1 and the decorative board 2 are easily separated, and the decorative board 2 on which the transfer surface 6a is formed is manufactured.
[0031]
The process paper 1 is easily separated from the base material 5 and the transfer layer 3 of the process paper 1 by the destruction of the adhesive layer 4, and the base material 5 and the transfer layer 3 are separated and collected, and the metal constituting the base material 5 is formed. (Aluminum, etc.), paper constituting the transfer layer 3, etc. can be recycled.
[0032]
When the adhesive layer 4 is made of an acryl-styrene resin, the heating conditions are heating temperature of 100 to 150 ° C., heating time of 0.5 to 1 hour, and then natural cooling or water cooling (not shown). ). When the adhesive layer 4 of the process paper 1 is made of a material other than the acryl-styrene resin, the heating conditions may be appropriately changed.
[0033]
When the adhesive layer 4 is made of an acrylic-styrene resin, the pressure is about 7 to 9 MPa (70 to 90 kg / cm ² ) by a hydraulic or hydraulic method (not shown). ). When the resin of the adhesive layer 4 of the process paper 1 is other than the acryl-styrene resin, the pressure conditions may be appropriately changed.
[0034]
【The invention's effect】
As described above, the present invention has a transfer layer provided on a substrate via an adhesive layer, and the adhesive layer is heated and pressurized at the time of performing transfer processing on the surface of the decorative board, and the base material is It has a configuration with heat non-adhesive properties to separate the transfer layer from the transfer layer.After the decorative board is manufactured, it is easy to separate and collect the base material and the transfer layer. It is possible to provide a surface finishing process paper that can utilize the constituent paper and the like as a recycled resource.
[0035]
Further, according to the present invention, since the adhesive of the adhesive layer is formed of an acrylic-styrene-based adhesive, the separation and collection of the base material and the transfer layer are further facilitated, and metals and papers are further recycled as resources. A process paper for surface finishing that can be utilized can be provided.
[Brief description of the drawings]
FIG. 1 (a) is a schematic view showing a configuration at the time of manufacturing a decorative board using the surface finishing process paper of the present invention, and FIG. 1 (b) is a schematic view showing a configuration after manufacturing of the decorative board.
FIG. 2 is a schematic view showing a configuration of a manufacturing apparatus of a surface finishing process paper of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Process paper 2 Decorative board 3 Transfer layer 3a Unevenness 4 Adhesive layer 4a Adhesive 5 Base material 6 Decorative layer 6a Transfer receiving surface 7 Core layer 8 Metal mirror plate 10 Manufacturing apparatus 11, 14 Feeding bobbin 12 Coating roller 13 Adhesion Agent tank 15 pressure roller 16 drying oven 17 winding bobbin

Claims (2)

Process paper used to apply a transfer process to the surface of the decorative board,
A substrate made of metal foil,
An adhesive layer made of an adhesive provided on the surface of the base material,
A transfer layer made of paper or cloth provided on the base material via the adhesive layer,
A process paper for surface finishing, wherein the adhesive has a property that an adhesive force is reduced by heating and pressing when the transfer layer is transferred to the surface of the decorative plate. The process paper for surface finishing according to claim 1, wherein the adhesive comprises an acrylic-styrene-based adhesive.

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