KR20100094807A - Wood flooring having adhesive layer using electron beam curing and process for preparing the same - Google Patents

Wood flooring having adhesive layer using electron beam curing and process for preparing the same Download PDF

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Publication number
KR20100094807A
KR20100094807A KR1020090013965A KR20090013965A KR20100094807A KR 20100094807 A KR20100094807 A KR 20100094807A KR 1020090013965 A KR1020090013965 A KR 1020090013965A KR 20090013965 A KR20090013965 A KR 20090013965A KR 20100094807 A KR20100094807 A KR 20100094807A
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KR
South Korea
Prior art keywords
layer
electron beam
adhesive
resin
beam curable
Prior art date
Application number
KR1020090013965A
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Korean (ko)
Inventor
남승백
Original Assignee
(주)엘지하우시스
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Priority to KR1020090013965A priority Critical patent/KR20100094807A/en
Publication of KR20100094807A publication Critical patent/KR20100094807A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/10—Next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/13—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board all layers being exclusively wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2419/00—Buildings or parts thereof

Abstract

PURPOSE: A wood flooring including an adhesive layer and a method for manufacturing the same are provided to obtain the superior surface characteristic by curing the adhesive layer using electron-beam. CONSTITUTION: Wood flooring includes a surface protective layer(10), a decorating layer(20), an adhesive layer(30), and a base layer(40). The adhesive is cured by an electron beam curing type adhesive. The electron beam curing type adhesive is impregnated in the base layer and the decorating layer during an electron-beam curing process. The viscosity of the electron beam curing type adhesive is between 100 and 500cps. 0.7 to 3.0MeV of electron beam is radiated to cure the adhesive.

Description

Wood flooring having adhesive layer using electron beam curing and process for preparing the same}

The present invention relates to a flooring material having an adhesive layer using an electron beam curing method and a method of manufacturing the same, and more particularly, by applying an adhesive layer cured with an electron beam to a base material layer such as plywood, deco-paper, printing It relates to a flooring material formed with a decorative layer such as a deco-sheet and a manufacturing method thereof.

Conventional flooring material is a method of applying the adhesive using a melamine formaldehyde or urea formaldehyde resin to a wooden substrate such as plywood and then heat-cured by a hot plate heated in a heat press for plastering plastering together with veneer, melamine formaldehyde resin Coated resin coated with polyurethane (PU) -based adhesives such as hot melt (Hot Melt), and a method of heat curing the overlay paper impregnated with paper by High Pressure Laminate (HPL) or Low Pressure Laminate (LPL). It is manufactured by the method etc. which bond the to.

In case of flooring material manufactured by heat press for veneer plastering, there is a shortcoming of lack of surface properties such as stamping and pencil hardness.In case of flooring material made of HPL or LPL using paper, surface crack occurs when heavy material falls. And it is not easy to remove the source of pollution by household pollutants, and above all, there are disadvantages such as productivity decrease due to the press manufacturing method.

In the case of the flooring material manufactured using a PU-based adhesive such as hot melt takes a certain time to completely cure the adhesive layer, there is a disadvantage that the adhesive strength of the decorative layer is insufficient.

Japanese Patent Laid-Open No. 2005-36532 discloses a flooring material comprising an electron beam curable adhesive having a glass transition point of 20 ° C. or more and 100 ° C. or less in a flooring material composed of a base material, an adhesive layer and a makeup sheet.

Japanese Patent Laid-Open Publication No. 1993-293894 discloses hydrophilicity when joining the back side of a toilet paper, in which a pattern printing layer and an overcoat layer are sequentially installed on the front side of a resin-reinforced sheet reinforced with a hydrophilic resin, to a surface of a substrate such as plywood or small particle board. Disclosed is a method for producing a decorative plate, characterized in that the electron beam is cured by irradiating an electron beam while the electron beam curable resin adhesive having no hydroxyl group and the solvent having a hydroxyl group in the molecule coexist to cure the electron beam curable resin adhesive.

Japanese Patent Application Laid-Open No. 2002-337107 discloses a method of manufacturing a cosmetic plywood in which a cosmetic end plate is attached to a base material plywood. The manufacturing method of the cosmetic plywood provided with the electron beam hardening process to harden is disclosed.

Japanese Laid-Open Patent Publication No. 2002-361173 discloses a method for forming a laminated coating film in which a layer composed of an electron beam curable coating composition containing an electron beam curable methacrylate resin is continuously laminated on at least two layers on a substrate surface, and has an electron beam curable property for a first layer. After applying the coating composition, an electron beam is irradiated, and a series of operations of applying the electron beam curable coating composition for the second layer on the surface of the applied first layer electron beam curable coating composition in a semi-cured state is repeated one or more times. A predetermined layer is laminated and finally cured by irradiating an electron beam to a layer composed of the lastly applied electron beam curable coating composition, and at the same time, completely curing all subsequent layers composed of the electron beam curable coating composition applied beforehand. A method of forming an electron beam-cured laminated coating film is disclosed.

Japanese Patent Application Laid-Open No. 2007-196669 discloses a liquid electron beam curing type without applying both the wood substrate and the liquid electron beam-curable paint, applying the liquid electron beam-curable paint to the surface of the wood substrate, and indenting therein, without performing curing by electron beam irradiation. A method for producing a resin-reinforced wood stucco that applies a coating material and press-fits it and then cures the pressurized liquid electron beam curable coating material with an electron beam.

The present invention has been made in order to solve the above problems, using a floor beam material and a method for producing the flooring material having a strong surface properties and continuous process productivity that the conventional flooring material was not provided at the same time using the electron beam (EB) curing. The purpose is to provide.

In order to achieve the above object, the present invention includes a surface protective layer, a stucco layer, an adhesive layer and a base layer from above, wherein the adhesive layer is made of an electron beam curable adhesive, while the electron beam curable adhesive is impregnated in the base layer and the stucco layer. It provides a flooring material characterized in that the electron beam curing.

The present invention is characterized in that the surface properties are greatly improved by the electron beam curing is carried out in the state in which the electron beam curable adhesive is impregnated into the base layer and the decorative layer.

In order for the electron beam curable adhesive to be impregnated into the base layer and the stucco layer in the present invention, the viscosity of the electron beam curable adhesive should be low, and the viscosity of the electron beam curable adhesive for impregnation is 100 to 500 cps.

In the present invention, the electron beam curable adhesive is cured by electron beam irradiation of 0.7 to 3.0 MeV. Conventionally, when curing the electron beam curable adhesive, the electron beam of 100 to 300 KV was irradiated, but the electron beam intensity was low, and the depth at which the electron beam penetrated downward from the surface of the flooring material was limited. In the present invention, since the electron beam curing is carried out while the electron beam curable adhesive is impregnated in the base layer and the stucco layer, the electron beam must be large in order for the electron beam to penetrate to the base layer, and the strength of the electron beam for deepening the penetration depth is 0.7. To 3.0 MeV, particularly 1.0 to 3.0 MeV. If the electron beam intensity is too high, radiation hazards are a concern. For reference, ultraviolet rays do not penetrate under the surface protection layer.

In the present invention, as the electron beam curable adhesive, a urethane acrylate resin, an epoxy resin, a polyester resin, a polyurethane resin, a polyamide resin, a melamine resin, or the like may be used. It is preferable to use a rate type resin.

In the present invention, the substrate layer is Plywood, Medium Density Fiberboard (MDF), High Density Fiberboard (HDF), Particle Board (PB: Particle Board), Kenaf Board (Kenaf Board) , Resin wood flour mixing board (WFPC) and the like can be used, in particular, a water-resistant plywood and high-density fiberboard.

In the present invention, as the stucco layer, veneer, resin impregnated paper, printed synthetic resin sheet and the like can be used, and in particular, veneer, resin impregnated paper.

The floor covering according to the first embodiment of the present invention is an ondol floor using a plywood as a base material layer and a veneer as a decorative layer.

The floor covering according to the second embodiment of the present invention is a reinforced floor covering using a high density fiberboard as a base material layer and a pattern paper impregnated with a decorative layer.

In the present invention, the surface protective layer is preferably made of an ultraviolet curable paint, and thus may have productivity by a continuous process together with the adhesive layer.

In the present invention, the back layer may be laminated under the base layer, and as the back layer, paper, metal foil, UV curable paint, thermosetting resin, synthetic resin sheet, or the like may be used.

In addition, the present invention comprises the steps of forming an adhesive layer made of an electron beam curable adhesive on the upper surface of the base layer; Forming a stucco layer on an upper surface of the adhesive layer; Irradiating an electron beam in the state in which the electron beam curable adhesive is impregnated into the base layer and the stucco layer to cure the electron beam curable adhesive; Forming a surface protective layer on an upper surface of the decorative layer; It provides a method for producing a floor covering material comprising the step of cutting and shape processing, in the curing step it is preferable to irradiate the electron beam of 0.7 to 3.0 MeV to cure the electron beam curable adhesive.

According to the present invention, the adhesive layer formed on the base layer has a characteristic of being hardened by an electron beam (EB), so that a continuous process can be performed without the need for a hot heat press, and workability and productivity are improved, and T & G (Tongue & Groove) processing or The flooring material which can manufacture the finished product by a click process can be provided.

In addition, according to the present invention, when the veneer stucco layer is applied, the electron beam penetrates and hardens to a part of the base layer and the veneer stucco layer where the adhesive is impregnated. , Surface hardness such as pencil hardness is enhanced.

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

1 is a cross-sectional view of a floor covering according to a first embodiment of the present invention, which is composed of a surface protective layer 10, a decorative layer 20, an adhesive layer 30, and a base layer 40 from above. .

The surface protective layer 10 is characterized by being capable of continuous production using an ultraviolet (UV) curable paint, which is a conventional method. The surface protective layer 10 is mainly applied when the veneer or printed synthetic resin sheet is used as the stucco layer 20, and the UV curable paint may be a photocurable urethane acrylate-based resin.

The stucco layer 20 forms an exterior layer that truly and freely represents the wood appearance of the flooring material. The veneer layer 20 may mainly use veneer veneer, deco paper impregnated with resin, and printed synthetic resin sheets. Preferred stucco layers are veneer and impregnated paper.

The adhesive layer 30 functions to adhere and adhere the board and the stucco layer 20 used as the base layer 40, and is made of an electron beam curable adhesive. As the electron beam curable adhesive, one or a mixture of two or more selected from urethane acrylate resins, epoxy resins, polyester resins, polyurethane resins, polyamide resins, and melamine resins may be used. In view of productivity and workability, urethane acrylate resins are preferred.

In order for the electron beam curable adhesive to be impregnated into the base layer 40 and the stucco layer 20, the viscosity of the electron beam curable adhesive should be low, and the viscosity of the electron beam curable adhesive for impregnation is 100 to 500 cps.

The base layer 40 is mainly used for wood-based boards, and wood-based boards such as water-resistant plywood, MDF, HDF, particle boards, kenaf boards, and resin wood flour mixing boards may be used as the wood-based boards. Among the wood-based boards mentioned above, preferred boards in the present invention are a plywood and HDF.

2 is a cross-sectional view of a floor covering according to a second embodiment of the present invention, which is a surface protection layer 10, a stucco layer 20, an adhesive layer 30, a base layer 40, a back layer from above. It consists of 50. Compared to FIG. 1, the back layer 50 is further stacked below the base layer 40, and serves as a balance layer to prevent warpage of the product when the base layer 40 is a fiber board such as MDF or HDF. It may have a back layer 50.

The back layer 50 may improve the structural stability by preventing moisture permeation and deformation of the flooring material. The back layer 50 may include papers, metal foils, UV curable paints, thermosetting resins, synthetic resin sheets, and the like. Can be used.

3 is a manufacturing process diagram of the floor covering according to the present invention, the first step of forming an adhesive layer 30 by coating the electron beam curable adhesive on the base layer 40; A second step of forming the stucco layer 20 on the adhesive layer 30; A third step of curing the electron beam curable adhesive impregnated in the adhesive layer 30, the base layer 40, and the stucco layer 20 by irradiating a transfer line on the stucco layer 20; A fourth step of forming the surface protection layer 10 using the ultraviolet curable paint on the stucco layer 20; It is divided into a total of five processes including the fifth process of cutting and shaping.

The electron beam curable adhesive is applied on the substrate layer 40 by roll coating or curtain coating, and is cured in seconds by an electron beam of 0.7 to 3.0 MeV level. Since the electron beam curing is performed while the electron beam curable adhesive is impregnated in the substrate layer 40 and the stucco layer 20, the electron beam must be large in order to penetrate the electron beam up to the substrate layer 40. 0.7-3.0 MeV, especially 1.0-3.0 MeV are preferable.

Figure 4 is a plan view of the floor covering having a T & G form according to the present invention, the floor covering of the present invention is finally to the T & G, click system or connector consisting of the groove portion 60 and the protrusion 70 so as to be mutually coupled It may have a connection structure.

Hereinafter, preferred embodiments of the present invention will be described. However, the following examples are only for illustrating the present invention, and the present invention is not limited to the following examples.

[Example]

After coating the urethane acrylate-based electron beam curable adhesive (viscosity: 300 cps) with a roll coating on the water-resistant plywood base layer 40 to form an adhesive layer 30, after laminating veneer with the stucco layer 20, an electron beam accelerator By passing through, the adhesive and the adhesive layer 30 impregnated into the base layer 40 and the stucco layer 20 were cured with an electron beam. At this time, the intensity of the electron beam was 1.0 MeV, the curing was progressed within a few seconds, the adhesive was cured in the state that the adhesive is partially impregnated in the base layer 40 and veneer stucco layer 20. Next, the surface protection layer 10 is formed on the upper surface of the decorative layer 20 by using an ultraviolet curable urethane acrylate-based resin, and then cut and shaped in the form of T & G (60, 70) using tenon air. Was processed to prepare a flooring material as shown in FIG.

[Comparative Example]

Based on the water-resistant plywood, a melamine formaldehyde resin is applied thereon to form an adhesive layer, and then the veneer layer is laminated with a stucco layer on top thereof to heat-cure the adhesive layer in a heat press for plastering, and then the ultraviolet curable surface protective layer is applied. The formed floorboard material was prepared.

[Test Example]

The flooring materials of Examples and Comparative Examples were tested for the following physical properties, and the test results are shown in Table 1 below.

Surface peelability

The drop height that damages the surface was measured when a flat-blade screwdriver weighing 110 g was free-falled on the surface of the floor covering material (which is 45 degrees from the horizontal plane).

Fragility

The drop height at which the surface was broken when the iron ball having a diameter of 3 cm and a weight of 228 g was dropped perpendicularly to the surface of the flooring material to be measured was measured.

Scratchability

The degree to which the surface per load (N) was scratched using a Clemens type scratch hardness tester was measured by the method of 3.15 of KS M3332.

division Photographing Fragility Scratchability Remarks Example 50 cm 80 cm 5 N Electron beam curing Comparative example 20 cm 20 cm 1 N Heat curing

As can be seen from Table 1, it can be seen that the embodiment of the flooring material according to the present invention has excellent physical properties such as scratching property, cracking property, scratching property, etc., compared to the comparative example of the conventional flooring material.

1 is a cross-sectional view of a floor covering according to a first embodiment of the present invention.

2 is a cross-sectional view of the floor covering according to a second embodiment of the present invention.

Figure 3 is a manufacturing process of the floor covering according to the present invention.

Figure 4 is a plan view of the floor covering having a T & G (Tongue & Groove) form in accordance with the present invention.

[Description of Symbols for Main Parts of Drawing]

10: surface protective layer

20: stucco

30: adhesive layer

40: substrate layer

50: back layer

60: Groove

70: Tongue

Claims (12)

A surface protective layer, a stucco layer, an adhesive layer and a substrate layer from above, The adhesive layer is made of an electron beam curable adhesive, the flooring material characterized in that the electron beam curing is made in the state that the electron beam curable adhesive is impregnated in the base layer and the decorative layer. The flooring material according to claim 1, wherein the electron beam curable adhesive has a viscosity of 100 to 500 cps. The flooring material according to claim 1, wherein the electron beam curable adhesive is cured by electron beam irradiation of 0.7 to 3.0 MeV. The method of claim 1, wherein the electron beam curable adhesive is composed of at least one electron beam curable resin selected from a urethane acrylate resin, an epoxy resin, a polyester resin, a polyurethane resin, a polyamide resin, and a melamine resin. Flooring made. The flooring material according to claim 1, wherein the base material layer is selected from a water resistant plywood board, a medium density fiber board, a high density fiber board, a particle board, a kenaf board, and a resin wood flour mixing board. The flooring material according to claim 1, wherein the decorative layer is selected from veneer, resin impregnated paper, and printed synthetic resin sheet. The flooring material according to claim 1, wherein the base material layer is a water-resistant plywood, and the decorative layer is veneer. The flooring material according to claim 1, wherein the base material layer is a high-density fiber board, and the decorative layer is a shape paper impregnated with a resin. The floor covering material according to claim 1, wherein the surface protective layer is made of an ultraviolet curable paint. The flooring material according to claim 1, wherein a backing layer is laminated under the base material layer, and the backing layer is selected from paper, metal foil, UV curable paint, thermosetting resin, and synthetic resin sheet. Forming an adhesive layer made of an electron beam curable adhesive on an upper surface of the substrate layer; Forming a stucco layer on an upper surface of the adhesive layer; Irradiating an electron beam in the state in which the electron beam curable adhesive is impregnated into the base layer and the stucco layer to cure the electron beam curable adhesive; Forming a surface protective layer on an upper surface of the decorative layer; Method for producing a floor covering material comprising the step of cutting and shape processing. 12. The method of claim 11, wherein the electron beam curable adhesive is cured by irradiating an electron beam of 0.7 to 3.0 MeV in the curing step.
KR1020090013965A 2009-02-19 2009-02-19 Wood flooring having adhesive layer using electron beam curing and process for preparing the same KR20100094807A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101978431B1 (en) * 2018-09-18 2019-05-14 주식회사 다해에프앤씨 a wooden floor with UV couting and a manufacturing method of thereof
CN115746693A (en) * 2022-11-23 2023-03-07 中广核达胜加速器技术有限公司 Self-repairing decorative plate with self-repairing EB film layer and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101978431B1 (en) * 2018-09-18 2019-05-14 주식회사 다해에프앤씨 a wooden floor with UV couting and a manufacturing method of thereof
CN115746693A (en) * 2022-11-23 2023-03-07 中广核达胜加速器技术有限公司 Self-repairing decorative plate with self-repairing EB film layer and preparation method thereof

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