KR20150016674A

KR20150016674A - Deep embossed high glossy melamine board

Info

Publication number: KR20150016674A
Application number: KR1020130092399A
Authority: KR
Inventors: 신호열
Original assignee: 신호열
Priority date: 2013-08-05
Filing date: 2013-08-05
Publication date: 2015-02-13

Abstract

The present invention relates to a high gloss embossed melamine board, in which a melamine surface decorating layer is formed on a surface of a flat board by a paint for undercoating, and then the surface of the melamine surface decorating layer is formed by pressing a mirror- Characterized in that it comprises a high gloss top layer formed by a high gloss coating material selected from the group consisting of an ultraviolet (UV) coating, an unsaturated polyester (PE) coating and a polyurethane (PU) coating on the emboss layer do.

Description

DEEP EMBOSSED HIGH GLOSSY MELAMINE BOARD}

The present invention relates to a high gloss embossed melamine board, and more particularly, to a high gloss embossed melamine board which not only imparts a visual three-dimensional feeling and delicate touch to the shape and color of a low pressure melamine (LPM) It relates to the embossed melamine board.

There is a great demand for high-gloss boards or high-gloss boards, such as furniture doors and interior panels. In high-gloss board, when finish painting (top) condition of the board surface is 90% or more of incident light when 60 ° incident light is irradiated on the surface of the board in furniture door board and interior finishing board, (Specular reflection).

Conventionally, a low pressure melamine cosmetic board with a melamine-impregnated toilet paper is very useful for planar decorations such as furniture doors, tables, desks, and interior finishes due to its excellent surface hardness, heat resistance and abrasion resistance Has come. A low pressure melamine (LPM) cosmetic board is a surface decoration board with melamine impregnated paper attached at low pressure to the board surface such as MDF. Melamine impregnated paper is impregnated with a melamine resin (a resin obtained by condensation reaction of melamine with formaldehyde in a weakly alkaline state) to a shape printed with a shape, color, or the like of a figure, a photograph or a pattern by gravure printing or the like Dried. However, the melamine-impregnated toilet paper or the low-pressure melamine cosmetic board to which the melamine-impregnated toilet paper or the low-pressure melamine makeup board is attached is liable to cause a small crack on the surface when discharged into the air for a long period of time, ii) And iii) it is not used as a high glossy surface material due to irregular irregularities on the surface due to irregular surface irregularities during the drying process.

In order to solve the disadvantages of such a melamine-impregnated toilet paper or a low-pressure melamine decorative board having the melamine-impregnated toilet paper, attempts have been recently made to apply a high gloss coating on the surface of a melamine impregnated toilet paper. However, when the surface of the toilet paper impregnated with melamine is coated, the coating film is separated from the melamine curing resin during the curing process of the coating. The adhesion between the melamine curing resin and the high gloss paint is poor.

There are two methods proposed to solve the adhesion problem between the melamine curing resin and the high gloss coating. First, a proper amount of urethane, isocyanate or unsaturated polyester resin is added to the melamine resin in the process of forming the melamine resin. Such a method is disclosed in Korean Patent Publication No. 10-2008-0006663. The melamine-impregnated toilet paper to which this method is applied is called "Melamine-impregnated toilet paper for painting", which is currently on the market, and is also referred to herein as the same name. Second, an acrylic primer is coated on the surface of a toilet paper impregnated with a conventional melamine resin to which no urethane, isocyanate, or unsaturated polyester resin is added, and the surface is coated with the primer. Quot; non-conductive melamine-impregnated toilet paper ", the same name is also referred to in the present specification.

The melamine-impregnated toilet paper impregnated with the urethane, isocyanate or unsaturated polyester resin or the like added to the melamine resin improves the bonding property between the melamine curing resin and the coating to some extent, but since the crosslinking between the resin of the coating material and these additives is very limited, The possibility of fine separation of the layer is still present. The melamine impregnated toilet paper with acrylic primer coating and coating on the surface thereof is not significantly different from the melamine impregnated toilet paper in that the possibility of fine separation of the coating layer exists because the bonding between the primer coating and the melamine hardening resin is incomplete .

Moreover, the decoration of the melamine-impregnated toilet paper can be variously shaped such as the shape, shape and color of the natural object, the shape, the shape and the color of the artifact, but it is a flat decoration. Therefore, even if a high gloss coating is applied to the surface, the surface gloss can be added, but the decoration of the melamine impregnated toilet paper can not be saved in a stereoscopic manner.

The present invention has been made in order to solve the disadvantages of the conventional low-pressure melamine decorative board, and the first problem to be solved by the present invention is to not only provide a strong adhesive force between the melamine cured resin and the paint layer, And to provide a high-gloss embossed melamine board capable of imparting visual three-dimensional feeling and delicate touch to a flat pattern.

A second problem to be solved by the present invention is to provide a high gloss embossed melamine board in which embossment can be maintained clearly without being offset by a paint during a coating process.

The third problem to be solved by the present invention is that the pinhole, the creator, the crack, the wrinkle and the crushing which are left on the surface of the melamine impregnated toilet paper are all smoothed, It provides smooth and clean high gloss embossed melamine board.

A fourth problem to be solved by the present invention is to provide a high gloss embossed melamine board which does not cause cracks or wrinkles on the surface of a toilet paper impregnated with melamine even when used for a long period of time.

A fifth problem to be solved by the present invention is to provide a high gloss embossed melamine board which can maintain the color tone and shape of a pattern printed on a toilet paper impregnated with melamine without deformation and contamination.

A sixth problem to be solved by the present invention is to provide a high gloss embossed melamine board which can flatten the surface of a tissue paper impregnated with melamine and reduce irregular reflection of light which may occur on the surface of the tissue paper impregnated with melamine.

The above-described problems of the present invention are solved by providing a melamine surface decoration layer by attaching a melamine impregnated surface to a surface of a flat board, forming a primer layer on the surface of the melamine surface decoration layer by a primer coating, (EN) An embossed layer is formed by pressurizing a surface of an embossed layer by a specular surface plate provided with a concavo - convex pattern. An embossed layer is formed on the embossed layer by using a high - gloss (UV) paint, an unsaturated polyester (PE) It can be solved by forming a high-gloss upper layer by coating.

When the melamine impregnated paper is a melamine impregnated paper for non-printing, a primer coating is applied on the melamine surface decorating layer, and then a primer layer, an emboss layer and a top layer are formed on the primer coating layer. have.

Wherein the embossed layer is formed on the undercoat layer, the melamine surface decorating layer and the board surface at the same time, and the high-gloss upper surface layer is formed in a uniform thickness on the surface of the embossed layer, Can be reproduced in the high-gloss upper layer as it is.

Wherein the emboss layer formed by the mirror-surface plate is formed only on the undercoat layer and the melamine surface decorating layer, and the high-gloss upper layer is formed on the surface of the embossing layer to have a uniform thickness so that the flat pattern of the melamine surface decorating layer and the concave- It can be reproduced in the upper layer as it is.

According to the present invention, a melamine impregnated layer is formed on a surface of a plate-shaped board to form a melamine surface decorating layer, and a surface layer of the melamine surface decorating layer is formed on the surface of the melamine surface decorating layer, The embossed layer is formed by pressurizing the mirror-finished plate with the pattern. In this process, penetration of the undercoat paint into the melamine-impregnated paper is performed, resulting in strong adhesion between the melamine-cured resin and undercoat layer, as well as giving a visual three-dimensional feeling and delicate touch to the printed surface of the melamine- .

Since the adhesive strength of the undercoating paint to melamine impregnated paper is weak in the painting process, the embossing is made on the surface of the melamine impregnated paper beforehand, and when the undercoating is applied, the paint for the undercoating flows into the bones or the recesses, On the other hand, as in the present invention, when the emboss is formed with the undercoat layer formed on the surface of the melamine surface decorating layer, the undercoat paint does not cover the embossed bone or recess. In addition, when forming the upper layer, the undercoat layer and the high gloss paint for top coating do not flow into the bone or the concave part during the coating even if the coating is applied to the embossed surface because of good adhesion. Therefore, the embossment can be kept clear without being offset by the paint during the painting process.

According to the present invention, when the undercoat layer is pressed by the mirror-surface plate, the melamine-impregnated toilet paper is also pressed. In this process, the pinhole, the creator, the crack, the wrinkle and the crushing on the surface of the toilet paper impregnated with melamine are all smoothed and the surface of the top layer is very smooth and clean, Less irregular reflection of light on the surface of impregnated toilet paper and improved luster.

According to the present invention, since the underlayer is firmly adhered to the surface of the melamine impregnated paper sheet and the melamine impregnated paper sheet is shielded from contact with the air, cracks and wrinkles are formed on the surface of the paper, And the color tone and shape of the pattern printed on the melamine impregnated toilet paper is maintained for a long time without deformation and contamination.

1 is a perspective view of a melamine impregnated paper according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a low-pressure melamine decorative board in which a melamine impregnated layer shown in FIG. 1 is attached to a board surface at a low pressure of 10 to 20 kgf / cm 2 to form a melamine surface decorating layer.
FIG. 3 is a cross-sectional view and a partial enlarged view of a low-pressure melamine decorative board in which a lower layer is formed on the surface of the low-pressure melamine decorative board shown in FIG.
4 is a perspective view and a partially enlarged view of a mirror-finished concave-convex pattern according to an embodiment of the present invention.
FIG. 5 is a schematic view showing a method of forming an embossed layer on the surface of a low-pressure melamine decorative board in which a lower layer is formed by the concave-convex mirror surface plate shown in FIG.
6 is a cross-sectional view and a partial enlarged view of a low-pressure melamine decorative board in which embossed layers are simultaneously formed on the melamine surface decorating layer, the undercoating layer and the board surface.
7 is a cross-sectional view and a partial enlarged view of a low-pressure melamine makeup board in which embossed layers are formed on the melamine surface decorating layer and the undercoat layer.
8 is a cross-sectional view and a partial enlarged view of a high-gloss embossed melamine board in which a top layer is formed on the surface of the low-pressure melamine decorative board shown in FIG.
FIG. 9 is a cross-sectional view and a partial enlarged view of a high-gloss embossed melamine board in which a top layer is formed on the surface of the low-pressure melamine decorative board shown in FIG.
10 is a view illustrating a manufacturing process of a high gloss embossed melamine board according to the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the melamine impregnated paper 17 is a resin sheet obtained by gravure printing on paper to form a pattern, and the pattern is impregnated with melamine resin. As shown in FIG. 2, the melamine impregnated paper 17 is characterized in that the thickness of the melamine impregnated paper 17 is thinner than that of the melamine impregnated paper 17, and the resin that has been impregnated into the paper by high- And adhered by auto-adhesion. The melamine impregnated paper 17 is sometimes referred to as a low pressure melamine inpregnated paper because it is adhesive-formed at a low pressure (10-20 kgf / cm 2) when the melamine impregnated paper 17 is adhered to the board 1.

2 shows a low-pressure melamine decorative board in which a melamine surface decorating layer 19 is formed on the surface of the board 1 by the melamine impregnated paper 17 in this way.

On the other hand, a melamine faced sheet is prepared by impregnating a melamine resin with melamine resin impregnated on a paper on which photographs, drawings, drawings and the like are printed and placing a plurality of folded paper grounded by impregnating a fibrous substrate such as kraft paper with phenol resin It is a plate-like material that is compression-molded by a heat pressure of 50 kgf / cm2 or more in a multi-stage press, and is usually called HPM, HPL or the like. At this time, it is possible to laminate a plurality of hot plates between the steel plates and simultaneously form them. Use a separate adhesive when attaching the melamine veneer to the board.

The present invention will be described mainly with reference to a low-pressure melamine decorative board with a melamine impregnated paper 17, but it may be directly applied to a high-pressure melamine decorative board having a melamine faced paper on a board instead of the melamine impregnated toilet paper. Accordingly, the melamine impregnated paper 17 of the description and claims of the present invention should be interpreted to include a melamine faced sheet.

As shown in Fig. 2, the embodiment of the present invention uses a flat board 1 whose surface is flat. The board 1 may be a particle board, a medium density fiber board, a high density fiber board (HDF), a plywood, a calcium silicate (CaSiO ₂ ) board, a magnesium (MgO) board, A fiber reinforced concrete (CRC) board, a gypsum board, but is not limited thereto. A melamine surface decorating layer (19) is formed by attaching a melamine impregnated surface (17) to the surface of the board (1), and a melamine surface decorating layer (19) Forming a top layer.

3, 6, or 7, the feature of the present invention is that the first embossing layers E1 and E2 are not formed directly on the surface of the board 1 or the melamine surface decorating layer 19 The embossed layer E1 or E2 is formed on the undercoat layer 3 after the undercoating layer 3 is formed on the melamine surface decorating layer 19 by applying the paint. For this purpose, as shown in Fig. 3, the undercoat layer 3 is first formed on the melamine surface decorating layer 19 of the flat board 1 by the undercoat paint. The surface of the melamine surface decorating layer 19 can be subjected to surface adjustment by a sanding machine before forming the undercoating layer 3. [ UV paint (UV wood sealer or UV sanding sealer) can be used as the undercoat paint for the UV paint layer, although there is a difference depending on the type of high-gloss paint for undercoating. (UV) paints and polyester paints can be used as undercoatings for polyurethane (PU) paint layers. Urethane paints (urethane wood sealers) and ultraviolet paints UV wood sealer or UV sanding sealer) can be used as the undercoat.

As shown in FIG. 4, the embossing layer E1 or E2 is formed on the undercoat layer 3 by using a mirror-surface plate 5 having a concavo-convex pattern 7 formed on one side of the steel sheet. The corrugated pattern 7 includes shapes and shapes of natural objects such as wood, waves, human drawn patterns, patterns, designs, pictures, and other shapes and shapes of objects that can be expressed by uneven patterns.

5 to 7, a plate-like board 1 on which a melamine surface decorating layer 19 and a undercoat layer 3 are formed is placed on a substrate 13, and the surface of the undercoat layer 3 The embossing pattern E1 or E2 is formed by pressing the specimen 11 with the specular surface plate 5 having the irregular pattern. The concavo-convex pattern 7 of the mirror-surface plate 5 is laminated so as to be in contact with the surface of the undercoat layer 3 so that the surface of the undercoat layer 5 on the undercoat layer 3 and the surface of the melamine surface- Thereby forming a concave-convex pattern having irregularities opposite to the concave-convex pattern (7). At this time, when the heater 9 is provided to heat the subbing layer 3 in the range of 80 ° C to 160 ° C, the subbing layer 3 can be prevented from being broken during the pressing process. The press pressure required to form the embossed layer E1 or E2 depends on the depth of the embossed layer E1 or E2, but a pressure of 30 kgf / cm2 to 50 kgf / cm2 can be applied. The press time required for forming the embossed layer (E1 or E2) may be 50 to 80 seconds, depending on the depth of the embossed layer (E1 or E2). As a result, a strong adhesive force is generated between the melamine cured resin and the undercoating layer, so that the adhesion between the undercoating layer 3 and the melamine surface decorating layer 19 of the board 1 The adhesion becomes tight and firm, and a flat three-dimensional pattern printed on a toilet paper impregnated with melamine can give a visual three-dimensional feeling and delicate touch. In addition, since pin holes, creators, cracks, wrinkles, and burrs remaining in the undercoat layer 3 are smoothed during the formation of the embossed layer E1 or E2 The top layer surface formed thereon is very smooth and clean. At this time, the surface of the board (1) and the melamine surface decorating layer (19) are also squeezed to remove pores existing in a certain thickness section, and a dense layer having a large tissue density is formed. Therefore, it is possible to reduce the waste of the painting paint and reduce the cost by virtually absorbing the undercoating layer 3 and the lower melamine surface decorating layer 19 and the board 1 of the high gloss coating material for upper surface painting. do. In addition, since the underlayer is firmly adhered to the surface of the melamine impregnated paper sheet and the melamine impregnated paper sheet is shielded from contact with the air, cracks and wrinkles do not occur on the surface of the paper, The hue and shape of the pattern printed on the surface is maintained without deformation and contamination for a long time.

6 and 7, the embossed layer is applied to both the board surface 1 and the melamine surface decorating layer 19 and the undercoat layer 3, depending on the depth of the press by the press 11 at this time. (Fig. 6), or may be formed only on the melamine surface decorating layer 19 and the undercoat layer 3 (Fig. 7). Although it is not shown in the drawing, it may be formed only in the undercoat layer 3 when forming an emboss layer having a very low depth.

As shown in FIG. 8, a high-gloss upper layer 15 is formed on the embossed layer E1 or E2 thus formed. The polishing with the sanding machine can be performed before the formation of the upper layer 15. Further, a middle layer may be further formed on the lower layer 3 after polishing and a top layer may be formed thereon. The high-gloss upper layer 15 is formed on the embossing layer E1 or E2 by a high-gloss paint selected from ultraviolet (UV) paint, unsaturated polyester (PE) paint, or polyurethane (PU) paint . These high grade paints for topical use have properties similar to those for undergarments, and because the adhesion to the undercoat layer 3 is very good, the paints do not flow into the valleys or recesses of the embossed layers E1 and E2 during coating. Therefore, the embossing pattern of the embossed layers E1 and E2 after the top coating is not canceled by the top coating, and remains unchanged, thereby visually giving a three-dimensional feeling and delicate touch to the flat pattern of the melamine surface decorating layer 19. [ Further, the upper layer 15 can be formed with a uniform thickness by a curtain coater or the like on the embossed layers E1 and E2.

As described above, the embossing layer E1 formed by the mirror-surface plate 5 is simultaneously formed on the undercoating layer 3, the melamine surface decorating layer 19 and the surface of the board 1, and the high- (15) can be formed on the surface of the embossed layer to have a uniform thickness so that the embossing pattern of the embossed layer (E1) can be reproduced in the high-gloss layer (15) as it is. The embossed layer is formed only on the undercoating layer 3 and the melamine surface decorating layer 19 and the high-gloss coating layer 15 is formed on the surface of the embossing layer E2 to have a uniform thickness, So that the uneven pattern of the layer can be reproduced intact in the high-gloss upper layer (Fig. 9).

10, the manufacturing process of the high-gloss embossed melamine board according to the present invention includes a step of forming a flat board 1, a step of forming a melamine impregnated paper 17 on the surface of the flat board 1, (200) of forming a undercoat layer (3) on the melamine surface decorating layer (19) formed by the melamine impregnated paper (17) with the above-mentioned paint, a step (200) (300) forming the embossing layers (E1, E2) by pressing the concave-convex mirror surface plate (5) on the embossing layer (3) and forming a top layer (15) on the embossing layers (E1, E2) .

1: board 3: underside layer
5: mirror surface plate 7: concave and convex pattern
9: heater 11: press
13: substrate 15: upper layer
17: melamine impregnated area 19: melamine surface layer
E1, E2: embossed layer

Claims

A melamine surface decoration layer formed by attaching a melamine impregnated paper to the surface of a board in the form of a flat plate;
An emboss layer formed by forming a primer layer on the surface of the melamine surface decoration layer by a paint for undercoating and pressing the surface of the primer layer by a mirror-finished plate having a concave-convex pattern; And
And a high gloss top layer formed on top of the embossed layer by one of a high gloss coating selected from an ultraviolet (UV) coating, an unsaturated polyester (PE) coating, or a polyurethane (PU) coating. Emboss board.

The method according to claim 1,
Wherein the melamine surface decoration layer is coated with a primer coating, and then a primer layer is formed on the primer coating layer.

3. The method according to claim 1 or 2,
The embossed layer of the embossed layer is formed on the high gloss top layer by simultaneously forming the embossed layer by the mirror-surface plate on the undercoat layer, the melamine surface decorating layer and the surface of the board, and the high- The high gloss embossed melamine board is characterized by being reproduced as it is.

3. The method according to claim 1 or 2,
The embossed layer of the embossed layer is formed on the high-gloss top layer directly on the embossed layer by forming the embossed layer on the embossed layer only on the underside layer and the melamine surface decorating layer. Features a high gloss embossed melamine board.