KR20060125653A - Method for manufacturing high polishing material and furniture material thereby - Google Patents

Abstract

A method of manufacturing a high-polishing furniture finishing material is provided to represent the material with various colors and patterns through a silk screen printing method using a special curing transparent resin. The method comprises the steps of: extruding polycarbonate-based transparent resins in a plate shape; printing on an inner surface of the plate; and adhering the plate, in which the printed surface of the plate is sprayed with resin-based transparent adhesives, to lumber. A resin layer is made of polycarbonate-based transparent resins. A protecting layer is formed on an outer side of the resin layer. A printed layer is formed on an inner side of the resin layer. A furniture material layer is engaged to the printed layer at an under portion of the printed layer.

Description

TECHNICAL FOR MANUFACTURING HIGH POLISHING MATERIAL AND FURNITURE MATERIAL THEREBY}

1 is a view showing a method for providing a high gloss furniture finish according to the present invention.

2 is a view showing the configuration of a high gloss furniture finishing material according to the present invention;

The present invention relates to a high gloss furniture finishing material, and to a high gloss furniture finishing material capable of expressing various colors and patterns by the #D three-dimensional effect of visual yin and yang using a silkscreen printing method using a specially cured adhesive resin ink.

Currently, there are several products used as furniture finishing materials, but high gloss finishing materials are becoming more uniform, making it difficult to implement new designs. Another alternative is glass, but glass has a disadvantage such as cracking.

In some cases, furniture finishing materials are produced by printing on glass or other materials. In the case of manufacturing patterned glass by printing or spray painting, the adhesive strength is low and the hardness is low, so frequent defects appear due to scratches during transportation or construction. When contacted with chemicals such as thinner due to the lack of chemical resistance, peeling or melting often occurs. In particular, glass lamps installed in the bathrooms for cleaning foreign matters have caused problems due to the inundation of the paint on the back of the mirror.

In addition, there is a product that attaches the adhesive sheet to the back of the plate glass, which has great advantages in terms of stability by preventing scattering when the glass is broken. It is easy to install and popular as interior and exterior materials, but it is not possible to design a variety and development of various varieties. There are disadvantages, and there are screen glass products of heat-drying method, which can produce various colors and patterns, but there are scattered problems such as adhesion problem of glass screen ink, productivity problem by drying time, equipment member, and high defect rate in process. Many have the disadvantages.

When the patterned glass is manufactured by printing or spray painting, which is used by conventional methods, weaknesses appear in the manufacturing of the patterned glass.The adhesiveness and hardness are not strong, so it is easy to cause defects due to scratches during transportation or construction. Peeling or melting often occurs due to back light. Especially, glass lamps installed in bathrooms for cleaning foreign substances may be cleaned by mixing a small amount of weak hydrochloric acid with water. Occurred.

The present invention is to provide a furniture material capable of implementing a variety of designs in order to overcome the disadvantages as described above, yet excellent in durability, chemical resistance.

In order to achieve the above object, there is provided a method for manufacturing a high gloss furniture, the method

Extruding the polycarbonate-based transparent resin into a sheet to form a sheet;

Printing on the inner side of the plate;

It may include the step of adhering to wood after applying a transparent resin-based adhesive on the printing surface.

After the extrusion step, a coating solution including a urethane acrylate oligomer, a reactive diluent (monomer), a photopolymerization initiator (curing agent), a pigment, an auxiliary agent, a polymerization inhibitor, and a sensitizer on the surface of the resin in the form of a plate. The method may further include forming a coating layer by applying ultraviolet rays after the coating.

The printing step may be printed by the silk screen method, the ink used may include any one of urethane oligomers, polyester oligomers and monomers, and the printing step may further include a step of curing by exposure to ultraviolet light after printing. have.

 The wavelength of the ultraviolet light used in the curing step may be 320 ~ 390nm.

The mesh used for the silkscreen printing may be a mesh (#) 120 to 60.

The adhesive used in the bonding step may be an ethylene-vinyl copolymer emulsion adhesive.

The present invention also provides a high gloss furniture manufactured using the above method.

A resin layer made of a polycarbonate-based transparent resin;

A protective layer bonded to an outer side of the resin layer;

A print layer printed inside the ledge layer;

A furniture layer coupled to the print layer may be included below the print layer.

The print layer may be printed by a silk screen method using a UV ink.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a view showing a manufacturing process of a high-gloss furniture material according to the present invention, the present invention is produced by a method of bonding a resin layer printed on MDF (medium density fiberboard), the solidification of polycarbonate (polycarbonate) in the extruder It was added in the form, and continuously extruded in the form of a sheet in the molten state put into the extruder, in the embodiment was extruded to a size of 1220mm * 2440mm * 2t. At this time, the high temperature extruded sheet is forcedly dried while passing through a roll conveyor belt of about 20M, and the dried sheet is coated with protective film on both sides of the fabric for surface protection and cut at both ends to compensate for uneven product cross section during extrusion. This cut product is cut into second order according to the ordered length, and the finished product is loaded on the pallet by the adsorber and then transported to the next process.

The polycarbonate used here is 250 times that of window glass and 50 times that of acrylic, and has excellent impact resistance. It contains UV-blocking material, which has excellent weather resistance, is soft, flexible, has no fear of breaking, and has only half the weight of glass. And it is easy to process, it has excellent transparency so that the total light transmittance is more than 85%, non-toxicity, high heat resistance and strong low temperature special property, so it does not occur deformation at about 40 degrees Celsius to 135 degrees. Therefore, when the resin layer is formed using polycarbonate, the inside of the resin is similar to glass, but it has advantages in that it is easy to install because it has superior transportability and durability than glass.

After the resin layer is produced by extrusion, a hard coating step is performed. The sheet-type resin is suspended in a hanger frame and introduced into a coating line. The injected product cleans the surface to remove foreign substances and static electricity on the surface of the product, and after the cleaning, the coating liquid is applied to the surface. The coating is intended to strengthen the hardness of the product surface and to prevent scratches. The coating has a hardness of about 2H.

The material used for coating is composed of urethane acrylate oligomer, reactive diluent (monomer), photopolymerization initiator (curing agent), pigment, adjuvant, polymerization inhibitor, sensitizer and the like. At this time, it is preferable to mix | blend 5-10 weight% and 10-15 weight% of monomers for an oligomer.

Products coated with coating liquid are forced to dry by UV dryer to come out of the coating line, and finished products are wiped off the remaining drugs at the bottom of the product, and after the surface inspection process, the protective film is applied on both sides of the product. Apply. In this process, the coated surface is coated with a heat-resistant film so as not to scratch the product, and the printed surface is removed in a later process.

After that, the inner surface of the resin is printed by the silk screen method. First, the general film applied to the printing surface is removed for the printing process and the foreign matter and static electricity are removed during the cleaning process. After passing through the washing machine, the product is placed on the printing machine and then printed by a printing squeegee, which is a printing process for color tone. Products coated with ink by squeegee are put into the U.V dryer and subjected to forced drying.

After that, the dried product passes through the scrubber once again to pass foreign substances and static electricity, and the product passed through the scrubber is placed on the printing machine and subjected to a second degree printing process by a printing squeegee. Second degree printing is a reinforcement printing process to protect the printing surface and to give adhesion. Products coated with ink due to squeegee are once again put into a UV dryer and subjected to a second drying process. Second-degree printing is a necessary process for printing in the desired color.

Here, the ink used for printing is a UV curing ink, which is an ink which hardens and dries from a liquid phase to a solid phase by causing a photochemical reaction with the energy of ultraviolet rays (wavelength of 100 to 400 nm), and depending on the relationship with the ultraviolet curing device, the reaction time and the film properties Will be different.

UV inks generally comprise photopolymerizable resins (oligomers and reactive diluents), photoinitiators, pigments, adjuvants (viscosity modifiers, antioxidants, wetting aids, dispersants), polymerization inhibitors, sensitizers and the like. Photopolymerizable resins can be classified into oligomers and reactive diluents. The oligomers are polymerized by several monomers (MONOMER), from low-viscosity liquids to high-viscosity liquids or semi-solids. Representative resins that dominate the basic properties of the UV ink are polyester acrylate, epoxy acrylate, urethane acrylate. In the present invention, polyester and urethane acrylate are mainly used. As the additive, a surfactant and a photoinitiator may be added in addition to the pigment. Monomers are also called diluents, which lower the viscosity of the oligomers in the ink to improve workability, and when cured, become a part of the hardened structure by crosslinking and addition polymerization, and acrylate is mainly used.

UV drying method is used to dry ink, strong ultraviolet light is required, and oligomer and monomer react to dry. UV ink is not dried in air. At this time, it is important to control the ink amount, which greatly affects the securing of adhesive force. At the time of initial curing, it is necessary to consider the adhesion test and post-printing process according to the material in order to maintain the adhesive strength and to ensure a good print quality.

In addition, the larger the number of mesh lines, the smaller the ink amount, so that a large area of printing is possible, and the image is fine and the line is firm and fully cured. In addition, since the squeeze, pressure, and speed of the printing squeeze affect print quality and the amount of organic compounds in the ink is small, there is no evaporation in the air, which is environmentally friendly.

In such printing, the amount of ink to be printed must be centrally controlled. The once-treated mesh has a reduced fiber thickness, and the tensile force, squeegee pressure, and thickness must be changed accordingly. The squeegee should be stronger, the strength, pressure and speed should be constant, and the color distinction step is sometimes necessary because the UV ink is highly transparent and it is difficult to distinguish colors in multicolor printing.

In contrast, oil-based ink is inefficient due to its long production time and there is a possibility of environmental pollution by using volatile organic solvent, and discoloration is progressed rapidly according to ultraviolet rays and general light, and it is weak in resistance to friction, heat, solvent, chemical resistance, etc. Has disadvantages.

Dry using UV lamp and use Metal Hillite UV lamp type dryer and dry using wavelength of 320 ~ 390nm. Especially for thick coatings or colored coatings, dryers that generate wavelengths around 365nm are used.

Printing uses silk screen method. To produce a three-dimensional effect, mesh (#) 120 ~ 60 mesh is used, and squeegee uses a urethane series of 70 hardness. Actual working temperature is maintained at 18 ~ 20 degrees Celsius. In addition, since the screen plate and ink may generate static electricity during operation, the indoor humidity is maintained at 70% or more.

In this way, one surface of the transparent resin is coated to prevent scratches, and the other surface is silk-screen printed by UV ink, so when viewed from one side of the coating, it has a transparent and deep feeling. It becomes possible. The resin in this state is adhered to the MDF. As an adhesive, an ethylene-vinyl acetate copolymer emulsion adhesive-based adhesive is used, which contains 80% by weight of synthetic resin, 5% by weight of additives, and 15% by weight of solvent.

For adhesion, the amount of adhesive is adjusted according to the thickness of the object to be adhered to while applying the adhesive. For thickness less than 0.2mm, 90-120 grams of adhesive per square meter is applied. After applying the adhesive, apply the adhesive and use rubber rolls with a diameter of 20cm or more to maintain adhesiveness with the adhesive, degassing (removing gas that may be dissolved in the adhesive), and adjust the force to pressurize with a hydraulic press. To bond. After curing for 1 to 2 days at a temperature of 15 to 20 degrees Celsius to harden the adhesive.

  Products that have been completed are subjected to color comparison, peeling test, lamination test, hardness test, etc. The color comparison is a process to check whether the printed product expresses the desired color well and the peeling test is to check if the printing on the resin is good. It is determined by the combination of the inks used, the printing squeegee speed and pressure, and the drying temperature. The coincidence test determines the working conditions according to the adhesive. The sharp knife checks the strength of the adhesive force between the adhesive surfaces.

The hardness of the printing surface is determined by the ink composition, printing squeegee speed and pressure, and drying temperature. After the cut is cut on the printing surface, the celluloid adhesive tape is adhered to the sheath area. The hardness is determined by judging whether or not it is buried.

The finished product is cut by manufacturing drawing and sold as furniture product through final assembly process.

2 is a view showing an embodiment of a high-gloss furniture according to the present invention A1 is a coating surface, B1 is a polycarbonate resin layer, C1 is a printing layer, D1 is an adhesive layer (EVA Bond) E1 is a core MDF Illustrated.

The invention as described above has the effect of providing a furniture material excellent in durability, heat resistance and chemical resistance.

Claims (8)

As a method of manufacturing high gloss furniture, Extruding the polycarbonate-based transparent resin into a sheet to form a sheet; Printing on the inner side of the plate; And applying a transparent resin-based adhesive to the printed surface and then adhering to wood. The method of claim 1, After the extrusion step, a coating solution including a urethane acrylate oligomer, a reactive diluent (monomer), a photopolymerization initiator (curing agent), a pigment, an auxiliary agent, a polymerization inhibitor, and a sensitizer on the surface of the resin in the form of a plate. The method of manufacturing a high gloss furniture further comprising the step of forming a coating layer by applying ultraviolet light after applying. The method of claim 1, wherein the printing step is performed by a silk screen method, and the ink used includes one of a urethane oligomer and a polyester oligomer and a monomer, and the printing step is performed by curing ultraviolet light after printing. The method of manufacturing a high gloss furniture further comprising the step. The method of manufacturing a high gloss furniture according to claim 3, wherein the wavelength of ultraviolet light used in the curing step is 320 to 390 nm. The method of manufacturing a high gloss furniture according to claim 3, wherein the mesh used for silk screen printing is mesh (#) 120 to 60. The method of claim 1, wherein the adhesive used in the bonding step is an ethylene-vinyl copolymer emulsion adhesive. As a high gloss furniture, A resin layer made of a polycarbonate-based transparent resin; A protective layer bonded to an outer side of the resin layer; A print layer printed inside the ledge layer; A high gloss furniture comprising a furniture layer coupled to the printing layer below the printing layer. 8. The high gloss furniture according to claim 7, wherein the printed layer is printed by a silk screen method using UV ink.

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