KR20160117768A - Sliced veneer moldings production method of the three-dimensional shape - Google Patents

Sliced veneer moldings production method of the three-dimensional shape Download PDF

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KR20160117768A
KR20160117768A KR1020150045108A KR20150045108A KR20160117768A KR 20160117768 A KR20160117768 A KR 20160117768A KR 1020150045108 A KR1020150045108 A KR 1020150045108A KR 20150045108 A KR20150045108 A KR 20150045108A KR 20160117768 A KR20160117768 A KR 20160117768A
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veneer
laminated wood
laminated
wood
urethane coating
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김재경
김근하
김성훈
최정아
최원재
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인탑스 주식회사
김근하
김재경
아로 주식회사
플라텔코퍼레이션(주)
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08Moulding or pressing
    • B27N3/10Moulding of mats
    • B27N3/12Moulding of mats from fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00Pretreatment of moulding material

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Laminated Bodies (AREA)

Abstract

Provided is a method for producing a three-dimensionally molded wood veneer According to the present invention, the method for producing the three-dimensionally molded wood veneer comprises the following steps: (a) pre-treating a surface of a wood veneer; (b) supplying the surface-treated wood veneer and a glass fibrous composite material; (c) bonding the wood veneer on an upper side of the supplied glass fibrous composite material so as to produce a wood veneer bonded sheet; and (d) producing the three-dimensionally molded wood veneer by press-molding the wood veneer bonded sheet. The method of the present invention can remarkably reduce burst and tear conventionally occurring along the grain on the wood veneer.

Description

입체형상의 무늬목 성형물 제조방법{Sliced veneer moldings production method of the three-dimensional shape}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a three-

본 발명은 입체형상의 무늬목 성형물 제조방법에 관한 것으로, 무늬목을 유리섬유복합소재에 접합하기 전, 전처리함으로써 인장강도 및 연신성이 향상되어 가공성이 개선된 무늬목을 제공하여, 3D 입체형상으로 성형이 용이한 입체형상의 무늬목 성형물 제조방법에 관한 것이다.
The present invention relates to a method of manufacturing a three-dimensional patterned wood-like molded product, and provides a woody pattern improved in workability by improving tensile strength and elongation property by pretreating the laminated wood to a glass fiber composite material, The present invention relates to a method of manufacturing a three-dimensional patterned wood product.

최근에는 무늬목과 같은 나무소재를 이용하여 케이스의 일면에 부착시켜 사용하고 있는 제품이 대한민국 공개특허공보 제10-2008-0024713호에 개시되어 있다.In recent years, Korean Patent Laid-Open No. 10-2008-0024713 discloses a product which is attached to one surface of a case by using a wood material such as a veneer.

이와 같이 무늬목을 케이스의 일면에 부착하여 사용하는 경우에는 자연적인 느낌을 가지게 할 뿐 아니라 나무 고유의 물성으로 인하여 외부 온도에 민감하게 반응하지 않아 휴대시 차가운 느낌을 감소시키고 심리적으로도 인공적으로 표현하지 못하는 미려한 느낌을 부여할 수 있게 되는 장점이 있다.When the veneer is attached to one side of the case, the veneer not only gives a natural feeling but also does not react sensitively to the external temperature due to the inherent physical properties of the wood, thereby reducing the feeling of cold during transportation and artificially expressing it psychologically It is possible to give a feeling of not being beautiful.

그러나, 목재를 절삭가공하여 얻는 무늬목은 플라스틱이나 금속 같은 이질재료(異質材料)와 접착하기가 어렵고 접착 후에도 서로 상이한 물성으로 인하여 후변형이 발생하는 단점이 있다. However, the veneer obtained by cutting wood is difficult to bond with heterogeneous materials such as plastic or metal, and has a disadvantage in that post-transformation occurs due to different physical properties after bonding.

또한, 케이스에 사용되는 무늬목을 두껍게 하는 경우에는 나무 고유의 특성으로 인하여 나무결을 따라서 쉽게 갈라져버리는 등 목재 고유의 단점이 있으며, 또한 무늬목을 얇게 제작하여 부착하는 경우에는 압축, 인장 및 파열 강도가 약하여 부착 후에 쉽게 부서지거나 표면이 깨어지는 단점이 있다. In addition, when the veneer used in the case is thickened, it has a disadvantage inherent in wood such as it is easily split along the grain due to the inherent characteristics of the wood. In addition, when the veneer is made thin, the compression, tensile and tear strength are weak There is a disadvantage that it breaks easily after being attached or the surface breaks.

또한, 이들 무늬목은 수분을 흡수하는 흡수성이 매우 크며, 수분을 흡수하면 선팽창과 용적팽창을 하고 수분을 잃으면 선수축 및 용적수축을 한다. In addition, these veneers are highly absorbent to absorb moisture, and when they absorb moisture, they undergo linear expansion and volumetric expansion, and when they lose moisture, they undergo bow axis and volume contraction.

또한 무늬목은 열이 가해지면 수분을 흡수할 때에 비하여 훨씬 적기는 하지만 선팽창과 용적팽창을 하고, 열을 뺏기면 선수축 및 용적수축을 한다. In addition, the veneer, when applied to heat, is much less compacted than when it absorbs moisture, but it undergoes linear expansion and volume expansion.

뿐만 아니라, 무늬목은 목재의 이방성(異方性 :목재의 섬유 방향, 접선 방향 및 방사 방향의 방향별로 습기나 열에 의한 수축팽창률 등 물성이 서로 다른 성질)으로 인하여, 치수가 불안정하고, 방향별로 수축팽창율이 달라 휘어지거나 틀어지는 등 불규칙적으로 변형되는 단점도 있다. 수분과 열의 출입에 의한 무늬목의 수축팽창은 무늬목에 도장하는 경우에도 수분의 이동이 완전히 차단되지 않는 한 완벽하게 제거되지는 않는 문제점이 있다는 단점이 있다.
In addition, because of the anisotropy of the wood (the anisotropy of the wood, the properties of the wood such as the fiber direction, the tangential direction and the radial direction are different from each other in physical properties such as moisture and heat shrinkage and expansion rate), the veneer is unstable in size, There is a disadvantage that it is irregularly deformed such that it is bent or twisted. The contraction and expansion of the veneer due to the entry and exit of moisture and heat is a problem in that even if the veneer is painted, it is not completely removed unless the movement of moisture is completely blocked.

본 발명은 무늬목의 표면에 친환경 소재인 수성 우레탄 코팅액으로 전처리하여, 무늬목의 인장강도 및 연신성을 향상시킨 후, 유리섬유복합소재와 전처리된 무늬목을 서로 합지하여 무늬목합지시트를 생성한 후, 무늬목합지시트를 프레스 성형하여 종래와 같이 무늬목의 나뭇결을 따라 터지거나 찢어지는 현상을 현격히 감소시키는 입체형상의 무늬목 성형물 제조방법을 제공하는 것을 그 목적으로 한다.
In the present invention, the surface of a laminated wood is pretreated with an aqueous urethane coating liquid which is an environment-friendly material to improve the tensile strength and elongation of the laminated wood, and then the glass fiber composite material and the pretreated laminated wood are joined together to produce a laminated wood laminated sheet, It is an object of the present invention to provide a three-dimensionally shaped patterned wood product manufacturing method in which a laminated sheet is press-molded so that the phenomenon of breaking or tearing along the grain of the laminated wood is remarkably reduced.

본 발명에 따른 입체형상의 무늬목 성형물 제조방법은 a)무늬목의 표면을 전처리하는 단계와, b)표면이 전처리된 무늬목 및 유리섬유복합소재를 공급하는 단계와, c)공급되는 유리섬유복합소재의 상면에 무늬목을 합지하여 무늬목합지시트를 제조하는 단계 및 d)무늬목합지시트를 프레스 성형하여 입체형상의 무늬목 성형물을 제조하는 단계를 포함한다.A method of manufacturing a three-dimensional patterned wood product according to the present invention comprises the steps of: a) pretreating a surface of a laminated wood, b) supplying a veneer and a glass fiber composite material whose surface has been pretreated, and c) And d) press-molding the laminated wood sheet to produce a three-dimensional patterned wood product.

이때 본 발명에 따른 상기 a)단계인 무늬목의 표면을 전처리하는 단계는 a-1)무늬목을 제공하는 단계와, a-2)제공되는 무늬목을 우레탄 코팅액을 수용한 수조에 지정시간 동안 함침하는 단계와, a-3)우레탄 코팅액이 수용된 수조에서 함침된 무늬목을 수거한 후, 상기 무늬목의 표면에 잔존하는 여액을 제거하는 단계와, a-4)표면에 여액이 제거된 무늬목을 오븐을 통과시켜 건조하는 단계를 포함한다.The step of pretreating the surface of the laminated wood according to the present invention comprises the steps of a-1) providing the laminated wood, a-2) impregnating the provided laminated wood into the water tank containing the urethane coating liquid for a predetermined time And a-3) removing the filtrate remaining on the surface of the veneer after collecting the veneer impregnated in the water tank containing the urethane coating solution, and a-4) passing the veneer having the filtrate removed from its surface through an oven And drying.

그리고 본 발명에 따른 상기 a-2)단계인 제공되는 무늬목을 우레탄 코팅액을 수용한 수조에 지정시간 동안 함침하는 단계에서, 우레탄 코팅액은 수성인 것이 바람직하다.In the step of impregnating the provided veneer, which is the step a-2) according to the present invention, into a water tank containing the urethane coating solution for a predetermined time, the urethane coating solution is preferably water-soluble.

또한 본 발명에 따른 상기 d)단계인 무늬목합지시트를 프레스 성형하여 입체형상의 성형물을 제조하는 단계에서, 상기 무늬목합지시트를 프레스 성형 시, 상기 무늬목합지시트의 표면온도가 90~100℃를 이루도록 적외선히터로 예열한 후, 프레스 금형으로 20초간 프레스압을 가하여 입체형상의 무늬목 성형물을 성형한다.
Further, in the step of forming a three-dimensional molded article by press molding the laminated laminated sheet according to the present invention, the laminated laminated sheet may be produced by pressing the laminated laminated sheet at a temperature of 90 to 100 ° C After preheating with a heater, pressing pressure is applied to the press mold for 20 seconds to mold a three-dimensional patterned molded article.

본 발명에 따른 입체형상의 무늬목 성형물 제조방법의 효과는 다음과 같다.The effect of the method of producing a three-dimensionally shaped green pattern molding according to the present invention is as follows.

무늬목의 표면에 우레탄 코팅액으로 전처리하여, 무늬목의 인장강도 및 연신성을 향상시킨 후, 유리섬유복합소재와 전처리된 무늬목을 서로 합지하여 무늬목합지시트를 생성한 후, 무늬목합지시트를 프레스 성형하면, 종래와 같이 무늬목의 나뭇결을 따라 터지거나 찢어지는 현상을 현격히 감소시키는 효과를 가진다.
The surface of the laminated wood is pretreated with a urethane coating liquid to improve the tensile strength and stretchability of the laminated wood, and then the glass fiber composite material and the pretreated laminated wood are joined to each other to produce a laminated wood laminated sheet, It has the effect of significantly reducing the phenomenon of breaking or tearing along the grain of the veneer as in the prior art.

도 1은 무늬목의 표면을 확대 촬영한 사진이다.
도 2는 본 발명의 실시에 따라 수성 우레탄 코팅액에 함침한 무늬목의 표면을 확대 촬영한 사진이다.
도 3은 본 발명의 실시에 따라 유성 우레탄 코팅액에 함침한 무늬목의 표면을 확대 촬영한 사진이다.
도 4는 본 발명 입체형상의 무늬목 성형물 제조방법의 실시를 간략하게 보인 예시도이다.
Fig. 1 is a photograph of the surface of a vignetting image enlarged and photographed.
2 is a photograph of a surface of a laminated wood impregnated with an aqueous urethane coating solution according to the practice of the present invention in an enlarged photograph.
3 is an enlarged photograph of the surface of a laminated wood impregnated in a milky urethane coating liquid according to the practice of the present invention.
Fig. 4 is a schematic view showing an embodiment of a method of manufacturing a three-dimensional patterned wood product according to the present invention.

이하, 첨부된 도면을 참조하여 본 발명에 따른 바람직한 실시 예를 상세히 설명하기로 한다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니 되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여, 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

따라서 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 실시 예에 불과할 뿐이고, 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들은 대체할 수 있는 균등한 변형 예들이 있을 수 있음을 이해하여야 한다.Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, at the time of the present application, It should be understood that variations can be made.

도 1은 무늬목의 표면을 확대 촬영한 사진이고, 도 2는 본 발명의 실시에 따라 수성 우레탄 코팅액에 함침한 무늬목의 표면을 확대 촬영한 사진이며, 도 3은 본 발명의 실시에 따라 유성 우레탄 코팅액에 함침한 무늬목의 표면을 확대 촬영한 사진이고, 도 4는 본 발명 입체형상의 무늬목 성형물 제조방법의 실시를 간략하게 보인 예시도이다.Fig. 2 is a magnified photograph of the surface of a laminated wood impregnated with an aqueous urethane coating solution according to the practice of the present invention. Fig. 3 is a photograph of the surface of a laminated wood, Fig. 4 is a schematic view showing an embodiment of a method for producing a three-dimensionally patterned wood product according to the present invention.

본 발명은 무늬목을 유리섬유복합소재에 접합하기 전, 전처리함으로써 인장강도 및 연신성이 향상되어 가공성이 개선된 무늬목을 제공하여, 3D 입체형상으로 성형이 용이한 입체형상의 무늬목 성형물 제조방법에 관한 것으로, 도면을 참조하여 살펴보면 다음과 같다.The present invention relates to a method for manufacturing a three-dimensional patterned wood mold product which is easy to mold into a 3D stereoscopic shape by providing a veneer having improved workability by improving tensile strength and stretchability by pretreating the veneer before bonding to a glass fiber composite material Referring to the drawings, the following will be described.

본 발명에 따른 입체형상의 무늬목 성형물 제조방법은 도 1 내지 도 4를 참조하면, 먼저 a)단계는 무늬목(10)의 표면을 전처리한다.1 to 4, a method of manufacturing a three-dimensional patterned wood product according to the present invention comprises the steps of: a) pre-treating the surface of the laminated wood 10;

이때 무늬목(10) 표면의 전처리는 함침공정으로 이루어지는데, 보다 상세하게 살펴보면, a-1)단계로, 무늬목(10)을 제공한다. At this time, the pretreatment of the surface of the laminated wood 10 is performed by an impregnating process. In more detail, the laminated wood 10 is provided in step a-1).

이때 제공되는 무늬목(10)은 천연원목을 종이처럼 얇게 만들어 제공되는데, 공정에 따라 선택적으로 무늬목(10)을 롤에 권취 상태로 연속반복으로 공급하거나, 무늬목을 지정 넓이로 재단하여 시트 형태로 공급할 수 있다.The veneer 10 provided at this time is made by making natural wood as thin as paper. The veneer 10 can be selectively and continuously supplied in a state of being wrapped around a roll in accordance with the process, or the veneer can be cut in a specified width and supplied in a sheet form .

도 1은 무늬목의 표면을 확대 촬영한 사진으로 나뭇결이 매우 불규칙하고 기공이 많은 것을 확인할 수 있는데, 나뭇결이 매우 불규칙하고 기공이 많은 것은 무늬목 자체의 성형성이 낮은 것으로, 성형시 무늬목의 갈라짐 또는 찢어짐 현상이 발생한다.Fig. 1 is an enlarged photograph of the surface of a vignetting. It can be seen that the grain is very irregular and the pores are large. The grain is very irregular and the pore is large, the formability of the vignetting itself is low. A phenomenon occurs.

그리고 a-2)단계로, 제공되는 무늬목(10)을 우레탄 코팅액(20)을 수용한 수조(1)에 지정시간 동안 함침 한다.In step a-2), the veneer 10 provided is impregnated in the water tank 1 containing the urethane coating liquid 20 for a predetermined period of time.

이때 상기 우레탄 코팅액(20)이 무늬목(10) 표면에 충분히 침투될 수 있도록 함침을 실시하는데, 함침율을 조정하기 위해 무늬목(10)의 함침 시간을 선택적으로 조절할 수 있다.At this time, impregnation is performed so that the urethane coating liquid 20 can sufficiently penetrate the surface of the veneer 10. The impregnation time of the veneer 10 can be selectively adjusted to adjust the impregnation rate.

그리고 a-3)단계로, 우레탄 코팅액(20)이 수용된 수조(1)에서 함침된 무늬목(10)을 수거한 후, 상기 무늬목(10)의 표면에 잔존하는 여액을 제거한다.Then, in step a-3), the veneer 10 impregnated in the water tank 1 containing the urethane coating liquid 20 is collected, and then the filtrate remaining on the surface of the veneer 10 is removed.

이때 상기 무늬목(10)의 상,하측 면에 각각 고무스퀴지(2)를 배치하여, 상기 고무스퀴지(2)로 무늬목(10) 표면에 잔존하는 우레탄 코팅액(20)을 제거하는 것이 바람직하다.At this time, it is preferable to arrange the rubber squeegees 2 on upper and lower surfaces of the veneer 10 to remove the urethane coating solution 20 remaining on the surface of the veneer 10 by the rubber squeegees 2.

그리고 a-4)단계로, 표면에 여액이 제거된 무늬목(10)을 오븐(3)을 통과시켜 건조한다.Then, in step a-4), the vignette 10 from which the filtrate has been removed from the surface is passed through the oven 3 and dried.

이때 상기 오븐(3)의 내부 온도는 70~90℃의 온도 분위기를 유지하는 것이 바람직하고, 상기 우레탄 코팅액(20)이 코팅된 무늬목(10)을 30초간 건조한다.At this time, it is preferable to maintain the internal temperature of the oven 3 at a temperature of 70 to 90 캜, and the veneer 10 coated with the urethane coating liquid 20 is dried for 30 seconds.

도 2는 본 발명의 실시에 따라 수성 우레탄 코팅액에 함침한 무늬목의 표면을 확대 촬영한 사진으로, 이를 살펴보면 무늬목 표면에 우레탄 코팅액이 코팅되었고, 나뭇결 사이 및 기공에도 우레탄 코팅액이 메워진 것을 확인할 수 있다.FIG. 2 is an enlarged photograph of the surface of a laminated wood impregnated with an aqueous urethane coating solution according to an embodiment of the present invention. The urethane coating liquid is coated on the surface of the laminated wood, and the urethane coating liquid is buried in the interstices and pores.

이때 사용된 우레탄 코팅액(20)은 수성으로 친환경적이고, 함침 공정이 용이하게 실시되고, 평균 함침율은 11%로 이루어진다.At this time, the urethane coating liquid 20 used is water-based and environmentally friendly, and the impregnation process is easily carried out, and the average impregnation rate is 11%.

도 3은 본 발명의 실시에 따라 유성 우레탄 코팅액에 함침한 무늬목의 표면을 확대 촬영한 사진으로, 이를 살펴보면 나뭇결 사이 및 기공에도 우레탄 코팅액이 메워진 것을 확인할 수 있고, 천연소재인 무늬목은 수분 흡입성이 높아 수성타입보다 유성타입의 경우, 무늬목 기공을 채우기보다 표면에 코팅이 두껍게 되어, 평균 함침율은 15%로 이루어진다.FIG. 3 is an enlarged photograph of the surface of the laminated wood impregnated with the oil-based urethane coating liquid according to the practice of the present invention. It can be seen that the urethane coating liquid is filled in the interstices and pores, and the natural wood veneer is water- In the case of the oil-based type rather than the aqueous type, the coating is thicker on the surface than the veneer pore filling, and the average impregnation rate is 15%.

다음으로 b)단계는 상기 a)단계에 의해 표면이 전처리된 무늬목(10) 및 유리섬유복합소재(30)를 공급한다.Next, in step b), the veneer 10 and the glass fiber composite material 30 which have been pretreated by the step a) are supplied.

이때 전처리된 무늬목(10) 및 유리섬유복합소재(30)는 롤투롤 방식으로 공급되는 것이 바람직하다.At this time, the pretreated laminated wood 10 and the glass fiber composite material 30 are preferably supplied in a roll-to-roll manner.

다음으로 c)단계는 공급되는 유리섬유복합소재(30)의 상면에 전처리된 무늬목(10)을 합지하여 무늬목합지시트(40)를 제조한다.Next, in step c), a laminated wood sheet 40 is prepared by laminating a pretreated laminated wood 10 on the upper surface of the glass fiber composite material 30 to be supplied.

이때 무늬목(10)과 유리섬유복합소재(30)의 합지는 접착층에 의해 이루어지는데, 상기 접착층은 TPU필름으로 이루어지고, 상기 전처리된 무늬목(10)과 유리섬유복합소재(30)가 공급될 시, 상기 전처리된 무늬목(10)과 유리섬유복합소재(30)사이로 공급 배치되고, 전처리된 무늬목(10)과 유리섬유복합소재(30)를 온도 150~200℃, 압력 ~10bar로 열프레스를 30초 이상 실시하여, 전처리된 무늬목(10)과 유리섬유복합소재(30)를 합지해 무늬목합지시트(40)를 이루도록 한다.At this time, the lamination of the laminated wood 10 and the glass fiber composite material 30 is made by an adhesive layer. The adhesive layer is made of a TPU film. When the pretreated laminated wood 10 and the glass fiber composite material 30 are supplied And the prepregs 10 and the glass fiber composite material 30 are placed between the pretreated laminated wood 10 and the glass fiber composite material 30 and heated to a temperature of 150 to 200 캜 and a pressure of 10 to 30, And the pretreated laminated wood 10 and the glass fiber composite material 30 are joined together to form a laminated wood sheet 40.

다음으로 d)단계는 무늬목합지시트(40)를 프레스 성형하여 입체형상의 무늬목 성형물을 제조한다.Next, in step d), the laminated wood sheet 40 is press-formed to produce a three-dimensional patterned wood product.

이때 상기 무늬목합지시트(40)를 프레스 성형 시, 상기 무늬목합지시트(40)를 적외선히터(4)로 선 예열한 후, 프레스 금형(5)으로 프레스압을 가해 입체형상의 무늬목 성형물을 성형하는데, 적외선히터(4)로 상기 무늬목합지시트(40)의 유리섬유복합소재(30)측을 가열하여 표면온도 90~100℃를 이루도록 하고, 프레스 금형(5)으로 20초간 프레스압을 가해 성형하는 것이 바람직하다.At this time, when the laminated sheet 40 is press-molded, the laminated laminated sheet 40 is preheated by the infrared heater 4, and press molding is applied to the press mold 5 to form a three- The glass fiber composite material 30 side of the laminated sheet 40 is heated by an infrared heater 4 to have a surface temperature of 90 to 100 캜 and pressed by a press mold 5 for 20 seconds to be molded desirable.

다음의 [표 1]은 예열시간 및 무늬목합지시트의 표면온도에 따라 제조된 입체형상의 무늬목 성형물의 샘플들을 비교하여 표로 나타낸 것이다. The following [Table 1] is a table comparing and comparing the samples of the three-dimensional patterned wood product produced according to the preheating time and the surface temperature of the laminated wood sheet.

NoNo 예열시간(적외선 히터)Preheating time (infrared heater) 무늬목합지시트의 표면온도Surface temperature of laminated sheet 수성우레탄Aqueous urethane 상단부Top 하단부Lower end 1One 17초17 seconds 80~90℃80 to 90 ° C 외관에 크랙 및 찍어짐 발생
(1)상단부: 크랙
(2)하단부: 찢어짐
Cracks and dents appear on the exterior
(1) Upper part: crack
(2) Lower end: tear

Figure pat00001
Figure pat00001
Figure pat00002
Figure pat00002
22 20초20 seconds 90~100℃90 ~ 100 ℃ 외관 양호
(1)상단부: 양호
(2)하단부: 양호
Good appearance
(1) Top: Good
(2) Lower part: Good
Figure pat00003
Figure pat00003
Figure pat00004
Figure pat00004
33 23초23 seconds 100~110℃100 to 110 ° C 외관에 크랙발생
(1)상단부: 다량의 크랙 발생
(2)하단부: 전체적인 미세 크랙 발생
Crack in appearance
(1) upper part: large amount of cracks
(2) Lower end: Overall micro crack occurrence
Figure pat00005
Figure pat00005
Figure pat00006
Figure pat00006

상기한 [표 1]에서 보는 바와 같이 수성 우레탄 최적 성형 조건은 20초가량 적외선히터로 유리섬유복합소재 부분에 열을 가했을 때 유리섬유복합소재의 표면온도 90~100도에서 최적의 성형 특성을 보인다.As shown in the above Table 1, the optimal molding conditions of the aqueous urethane are 20 ° C. for the infrared ray heater, and when the heat is applied to the glass fiber composite material portion, the glass fiber composite material exhibits optimal molding characteristics at a surface temperature of 90 to 100 ° C.

NoNo 예열시간(적외선 히터)Preheating time (infrared heater) 무늬목합지시트의 표면온도Surface temperature of laminated sheet 유성우레탄Oil-based urethane 상단부Top 하단부Lower end 1One 20초20 seconds 90~100℃90 ~ 100 ℃ 외관에 크랙 발생
(1)상단부: 다량의 크랙 발생
(2)하단부: 미세 크랙
Crack in appearance
(1) upper part: large amount of cracks
(2) Lower end: fine crack

Figure pat00007
Figure pat00007
Figure pat00008
Figure pat00008
22 22초22 seconds 100~110℃100 to 110 ° C 외관에 크랙 발생
(1)상단부: 다량의 크랙 발생
(2)하단부: 찢어짐 발생
Crack in appearance
(1) upper part: large amount of cracks
(2) Lower end: tearing occurred
Figure pat00009
Figure pat00009
Figure pat00010
Figure pat00010
33 24초24 seconds 110~120℃110 ~ 120 ℃ 외관에 크랙 발생
(1)상단부: 다량의 크랙 발생
(2)하단부: 찢어짐 발생
Crack in appearance
(1) upper part: large amount of cracks
(2) Lower end: tearing occurred
Figure pat00011
Figure pat00011
Figure pat00012
Figure pat00012

상기한 [표 2]에서 보는 바와 같이 수성 우레탄에 비해 열특성이 높은 편인 유성우레탄은 유리섬유복합소재의 표면온도가 110℃까지 상승함에도 불구하고 표면 크랙 및 갈라짐 현상이 심화되는 것을 확인할 수 있다.As shown in the above Table 2, in the case of the urethane urethane in which the heat characteristic is higher than that of the aqueous urethane, the surface cracking and cracking phenomenon is observed even though the surface temperature of the glass fiber composite material is increased to 110 캜.

이는 유성 우레탄 코팅층과 유리섬유복합소재 간의 열팽창 특성 차이로 인해 크랙 및 찢어짐이 발생한 것으로, 따라서 우레탄 코팅액은 수성을 이용하는 것이 바람직하다.This is because cracks and tears are caused by the difference in thermal expansion characteristics between the oil-based urethane coating layer and the glass fiber composite material, and therefore, it is preferable to use an aqueous urethane coating solution.

또한, 수성 우레탄의 경우 에멀전 타입으로 점도 조절 및 작업성이 용이하며 주쇄가 유연한 구조로 되어 있는 것이 무늬목 성형에 더 적절하다.Further, in the case of aqueous urethane, it is more suitable for forming a veneer because it is an emulsion type and has a viscosity controllability and easy workability and a flexible main chain.

본 발명에 따른 상기한 과정에 의해 무늬목 자체를 3D형상으로 프레스 성형하여도 나뭇결을 따라 터지거나 찢어지는 현상이 현격히 감소된다.The above process according to the present invention significantly reduces the phenomenon of bursting or tearing along the grain even if the laminated wood itself is press-formed into a 3D shape.

따라서 3D 입체형상을 갖는 무늬목 제품의 생산성이 높아지는 효과를 가진다.Therefore, the productivity of the veneer product having 3D stereoscopic shape is increased.

본 발명은 도면에 도시된 실시 예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 다른 실시 예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 진정한 기술적 보호 범위는 첨부된 특허청구범위의 기술적 사상에 의하여 정해져야 할 것이다.
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1: 수조
2: 고무스퀴지
3: 오븐
4: 적외선히터
5: 프레스금형
10: 무늬목
20: 우레탄 코팅액
30: 유리섬유복합소재
40: 무늬목합지시트
1: aquarium
2: Rubber squeegee
3: Oven
4: Infrared heater
5: Press mold
10: Wood veneer
20: Urethane coating liquid
30: Fiberglass composite material
40: laminated wood sheet

Claims (4)

a)무늬목의 표면을 전처리하는 단계;
b)표면이 전처리된 무늬목 및 유리섬유복합소재를 공급하는 단계;
c)공급되는 유리섬유복합소재의 상면에 무늬목을 합지하여 무늬목합지시트를 제조하는 단계; 및
d)무늬목합지시트를 프레스 성형하여 입체형상의 무늬목 성형물을 제조하는 단계를 포함하는 입체형상의 무늬목 성형물 제조방법.
a) pre-treating the surface of the veneer;
b) providing a veneer and glass fiber composite material having a surface pretreated;
c) preparing a laminated wood sheet by laminating a laminated wood on the upper surface of the glass fiber composite material to be supplied; And
and d) press-molding the laminated wood sheet to produce a three-dimensional laminated wood product.
청구항 1에 있어서,
상기 a)단계인 무늬목의 표면을 전처리하는 단계는
a-1)무늬목을 제공하는 단계와;
a-2)제공되는 무늬목을 우레탄 코팅액을 수용한 수조에 지정시간 동안 함침하는 단계와;
a-3)우레탄 코팅액이 수용된 수조에서 함침된 무늬목을 수거한 후, 상기 무늬목의 표면에 잔존하는 여액을 제거하는 단계와;
a-4)표면에 여액이 제거된 무늬목을 오븐을 통과시켜 건조하는 단계를 포함하는 입체형상의 무늬목 성형물 제조방법.
The method according to claim 1,
The step of pre-treating the surface of the laminated wood, which is the step a)
a-1) providing a veneer;
a-2) impregnating the veneer provided with a urethane coating solution-containing water tank for a predetermined period of time;
a-3) collecting the veneer impregnated in the water tank containing the urethane coating liquid, and then removing the filtrate remaining on the surface of the veneer;
a-4) a step of drying the veneer on which the filtrate is removed by passing the veneer through an oven.
청구항 2에 있어서,
상기 a-2)단계인 제공되는 무늬목을 우레탄 코팅액을 수용한 수조에 지정시간 동안 함침하는 단계에서,
우레탄 코팅액은 수성인 것을 특징으로 하는 입체형상의 무늬목 성형물 제조방법.
The method of claim 2,
In the step of impregnating the veneer provided in step a-2) into the water tank containing the urethane coating solution for a predetermined time,
Wherein the urethane coating liquid is water-soluble.
청구항 1에 있어서,
상기 d)단계인 무늬목합지시트를 프레스 성형하여 입체형상의 성형물을 제조하는 단계에서,
상기 무늬목합지시트를 프레스 성형할 시, 상기 무늬목합지시트의 표면온도가 90~100℃를 이루도록 적외선히터로 예열한 후, 프레스 금형으로 20초간 프레스압을 가하여 입체형상의 무늬목 성형물을 성형하는 입체형상의 무늬목 성형물 제조방법.
The method according to claim 1,
In step (d) of producing a three-dimensional molded product by press molding the laminated wood sheet,
Wherein when the green laminated sheet is press molded, the green laminated sheet is preheated by an infrared heater so that the surface temperature of the green laminated sheet becomes 90 to 100 ° C, and then pressed by a press mold for 20 seconds to form a three- A method of manufacturing a molded article.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102081991B1 (en) 2019-12-02 2020-05-15 김용호 Surface coating method for solid patterned with growth using a powder paint

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102081991B1 (en) 2019-12-02 2020-05-15 김용호 Surface coating method for solid patterned with growth using a powder paint

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