KR20170059962A - Recoatable lpm with material such as pet, pp, uv, poly and manufacturing method of the recoatable lpm - Google Patents
Recoatable lpm with material such as pet, pp, uv, poly and manufacturing method of the recoatable lpm Download PDFInfo
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B96/00—Details of cabinets, racks or shelf units not covered by a single one of groups A47B43/00 - A47B95/00; General details of furniture
- A47B96/20—Furniture panels or like furniture elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
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Abstract
Description
본 발명은 하도, 중도 등의 공정 없이도 시트 상단에 마감 도장이 가능한, 재도장용 LPM 및 그의 제조방법에 관한 것이다.The present invention relates to a reusable LPM capable of finish coating on the top of a sheet without any process such as undercoat, middle, etc., and a manufacturing method thereof.
일반적으로, 가구나 인테리어 내장재 및 건축내외장재 등에 사용되는 표면소재는 천연무늬목, PVC, 코팅페이퍼, HPM, LPM 등이 주를 이룬다. LPM은 강하게 압착한 종이질에 요소수지와 멜라민수지를 함침 및 코팅한 후 건조시켜서 PB나 MDF에 열과 압력을 가해 붙여 사용하는 보드이며 종이에 다양한 패턴으로 인쇄를 한 다음 요소 및 멜라민수지에 함침코팅된 시트를 여러가지 문양의 경면판으로 열압 성형하는 소재로 질감과 내구성은 우수하다. PB나 MDF 표면에 LPM 성형 후 UV도료나 포리도장을 하는 경우, 하도와 중도 공정을 거친 후 최종 상도(UV 및 포리도장)을 처리하여야 한다.In general, the surface materials used for furniture, interior and interior and exterior materials are dominated by natural veneer, PVC, coated paper, HPM and LPM. LPM is a board that is impregnated and coated with urea resin and melamine resin on strongly pressed paper, dried, and then applied to PB or MDF by applying heat and pressure. It is printed on paper in various patterns and impregnated and coated with urea and melamine resin It is a material which is made by hot-pressing the sheet with various patterns of mirror-finished plates, and is excellent in texture and durability. When UV or PA coating is applied to the surface of PB or MDF after LPM molding, the final top coat (UV and polish coat) should be treated after undergoing the undercutting process.
가구나 인테리어 내외장재에 사용되는 보드에 접착하여 최종 표면 마감재로 사용이 되는 경우에는 문제가 없지만, LPM에 붙여진 보드, 즉, MFC에 UV코팅이나 포리 도장 등의 2차 가공이 더해질 경우에는 일반 LPM은 접착불량과 크랙 등의 문제점이 발생한다. 또한 추가로 공정을 진행하려면 하도, 중도, 상도의 도장을 거쳐야 하므로 공정의 단계가 많고 비용이 추가된다.There is no problem when it is used as final surface finish material by bonding to boards used for furniture and interior and exterior materials. However, when secondary processing such as UV coating or polyurethane coating is added to boards attached to LPM, that is, MFC, Problems such as defects and cracks occur. In addition, in order to carry out further processing, there is a lot of steps in the process, and cost is added because the undercoating, middle coating and top coating must be applied.
또한, 멜라민 화장판 제조시 표면층에 사용되는 멜라민 수지 함침지를 이용하여 유광제품을 제조하는 경우에도 보드 위에 접착을 실시하고 난 뒤에는 표면이 접착면의 영향을 받아 울퉁불퉁하여 광택효과가 감소되어 유리면과 같은 광택의 효과는 기대할 수 없게 되어 고압멜라민 화장판 위에 표면처리를 실시한 후 재도장을 실시하려는 시도가 수 년간 계속되고 있으나 해결되고 있지 않은 실정이다. In addition, even in the case of producing a glossy product using a melamine resin impregnated paper used in a surface layer in the production of a melamine faced sheet, after the adhesive is applied on the board, the surface is rugged due to the influence of the adhesive surface, The effect of gloss can not be expected. Therefore, attempts to re-coat the surface of a high-pressure melamine film have been attempted for many years, but the problem has not been solved.
본 발명은 LPM 제조공정 중 기존 하도 중도의 공정 없이 시트 상단에 투명 도장을 가능하도록 하여 재도장이 가능한 LPM을 제조하는 것을 목적으로 한다.An object of the present invention is to provide an LPM capable of being repainted by allowing transparent coating on the top of a sheet without any conventional intermediate process during the LPM manufacturing process.
또한 완제품 생산을 위한 원부재료의 이동횟수를 줄여 원가절감 가능하며, 유해물질 및 폐기물을 감소시켜 친환경 LPM을 제조하는 것을 목적으로 한다.Also, it is possible to reduce the number of movements of the raw materials for the production of finished products, and to reduce the harmful substances and wastes, thereby manufacturing environmentally friendly LPM.
본 발명은, 재도장이 가능한 LPM의 제조방법에 관한 것으로, 종이를 1차 함침용 조성물에 함침하는 단계; 상기 함침된 종이를 1차 건조하는 단계; 상기 건조된 종이의 상면을 멜라민 수지, 부착증진제, 부착첨가제, 용해용 분산제를 포함하는 2차 함침코팅 조성물로 함침과 코팅하는 단계; 상기 함침 코팅된 종이를 2차 건조하는 단계; 및 상기 건조된 종이를 냉각하는 단계를 포함하는 것을 특징으로 한다.The present invention relates to a method of producing LPM capable of being repainted, comprising the steps of impregnating paper with a primary impregnating composition; Drying the impregnated paper primarily; Impregnating and coating the top surface of the dried paper with a second impregnating coating composition comprising a melamine resin, an adhesion promoter, an adhesion additive, and a dissolution dispersant; Secondary drying the impregnated coated paper; And cooling the dried paper.
상기 1차 함침용 조성물은, 요소수지 88~92 중량%, 물 7~12중량%, 요소 경화제 0.5~2.5중량% 인 것을 특징으로 한다.The primary impregnating composition is characterized by containing 88 to 92% by weight of urea resin, 7 to 12% by weight of water, and 0.5 to 2.5% by weight of urea curing agent.
상기 2차 함침코팅 조성물은, 멜라민 수지 85~90중량%, 물 3~7중량%, 멜라민 경화제 0.3~0.6중량%, 가소제 및 이형제 0.1~0.3중량%, 도장약제 5~10중량% 인 것을 특징으로 한다.The second impregnating coating composition is characterized by comprising 85 to 90% by weight of a melamine resin, 3 to 7% by weight of water, 0.3 to 0.6% by weight of a melamine curing agent, 0.1 to 0.3% by weight of a plasticizer and a release agent, and 5 to 10% .
상기 도장약제는 부착증진제 또는 부착첨가제인 것을 특징으로 한다.The coating agent is an adhesion promoter or an adhesion additive.
또한 은폐력을 향상시키기 위하여 2차 함침코팅 조성물에 TiO2 를 더 포함할 수 있다.The second impregnating coating composition may further comprise TiO 2 to improve hiding power.
따라서 본 발명의 제조방법에 의해 제조된 LPM은 접착불량이나 크랙의 문제가 없으면서 하도, 중도의 공정단계를 생략하고 시트 상단에 바로 UV코팅이나 포리도장이 가능할 뿐 아니라, 투명 PET나 PP 등도 부착해서 High Glossy를 구현할 수 있다. Therefore, the LPM produced by the manufacturing method of the present invention is free from problems of adhesion failure and cracking, and it is possible to apply UV coating or polyurethane coating directly on the upper part of the sheet by omitting the intermediate and intermediate process steps, High Glossy can be implemented.
본 발명에 따른 도장용 LPM을 사용하면 접착불량이나 크랙의 문제가 없으면서 하도, 중도의 공정단계를 생략하고 시트 상단에 바로 UV코팅이나 포리도장이 가능하게 되며, 또한 투명 PET나 PP 등도 부착하여 High Glossy를 구현할 수 있다.The use of the LPM for coating according to the present invention eliminates the problems of adhesion failure and cracking while eliminating the intermediate and intermediate process steps and enables UV coating and polyurethane coating directly on the upper part of the sheet. Also, by attaching transparent PET or PP, Glossy can be implemented.
본 발명에 따른 LPM 제조공정은 기존 하도 중도의 공정 없이 시트 상단에 마감 도장을 가능하도록 하고, 완제품 생산을 위한 원부재료의 이동횟수를 줄여 원가절감 가능하며, 유해물질 및 폐기물을 감소시켜 환경문제 개선할 수 있다는 효과가 있다.The LPM manufacturing process according to the present invention enables finishing coating on the top of a sheet without the conventional under-floor process, cost reduction by reducing the number of movement of raw materials for production of finished products, reduction of harmful substances and waste, There is an effect that can be done.
도 1은 본 발명의 제조공정을 단계별로 나타낸 도면이고,
도 2는 본 발명의 LPM을 재도장 한 후 부착력 테스트 결과 사진이고,
도 3은 종래의 LPM을 재도장 한 후 부착력 테스트 결과 사진이다.FIG. 1 is a view showing steps of the manufacturing process of the present invention,
FIG. 2 is a photograph of the adhesion test result after re-coating the LPM of the present invention,
FIG. 3 is a photograph of the adhesion test result after re-coating the conventional LPM.
본 발명의 LPM의 제조공정은 종이를 조성물에 함침하는 단계; 상기 함침된 종이를 1차 건조하는 단계; 상기 건조된 종이의 상면을 멜라민 수지, 부착증진제, 부착첨가제, 용해용 분산제를 포함하는 2차 함침용 조성물로 함침하여 코팅하는 단계; 상기 함침 코팅된 종이를 2차 건조하는 단계; 및 상기 건조된 종이를 냉각하는 단계를 포함한다. The process of making the LPM of the present invention comprises the steps of impregnating paper with the composition; Drying the impregnated paper primarily; Impregnating the top surface of the dried paper with a second impregnating composition comprising melamine resin, adhesion promoter, adhesion additive, and dissolution dispersant; Secondary drying the impregnated coated paper; And cooling the dried paper.
본 발명의 종이는 흡수력이 있는 인쇄가 되지 않은 무지의 종이나 일반모양지(70~80g/㎡, 인쇄된 상태)를 사용하며, 흰색, 나뭇결 무늬, 추상 무늬 등이 인쇄된 종이를 원지로 사용할 수도 있다.The paper of the present invention uses an unprinted plain paper or an ordinary paper (70 to 80 g / m 2, printed) that has absorbency, and uses white paper, a wood grain pattern, It is possible.
상기 종이는 1차 함침 조성물에 함침하는데 1차 함침 조성물은 요소수지, 요소경화제, 물을 포함한다.The paper impregnates the primary impregnating composition, wherein the primary impregnating composition comprises urea resin, urea hardener, and water.
종래에는 1차 함침용으로 기본적으로 멜라민 수지를 100% 사용했으나 경제성을 고려하여 요소수지로 대체할 수 있다. 따라서 가격이 저렴한 요소수지를 주재료로 사용하여 일차적으로 종이를 함침한다. 요소수지는 열경화성 수지의 대표적인 접착제로서 경제적이고 성능이 우수하며 2차 가공(보드접착)시 접착제 역할을 한다. 1차 함침 조성물 전체에서 요소수지 88~92 중량% 가 바람직하다.Conventionally, 100% of melamine resin is basically used for primary impregnation, but it can be replaced with urea resin in consideration of economical efficiency. Therefore, paper is impregnated primarily with cheap urea resin as main material. Urea resin is a typical adhesive for thermosetting resin, and it is economical and has excellent performance and acts as an adhesive for secondary processing (board bonding). The urea resin is preferably 88 to 92% by weight in the entire primary impregnation composition.
요소경화제는 일정량을 투입하면 2차 보드접착 가공시 일정한 압력, 온도, 시간에 표면에 접착하여 경화되도록 하는 역할을 한다. 본 발명에서 요소경화제는 1차 함침 조성물 전체에 대해 0.5~2.5중량% 가 바람직하다. 0.5중량% 미만인 경우에는 2차 가공시 경화성이 떨어지며, 2.5중량% 이상이면 지나치게 경화되어 가공성이 떨어지게 된다.The urea curing agent plays a role of adhering to the surface and curing at a certain pressure, temperature and time in the secondary board bonding process when a certain amount is supplied. In the present invention, the urea curing agent is preferably used in an amount of 0.5 to 2.5% by weight based on the total weight of the primary impregnation composition. When the amount is less than 0.5% by weight, the curing property in the secondary processing is poor. When the amount is more than 2.5% by weight, the curing is excessively cured and the workability is deteriorated.
그리고 요소수지의 점도 조절용으로 물이 포함되며, 함침 조성물 전체에 대해 7~12중량% 를 포함함이 바람직하며, 만일 7중량% 미만인 경우에는 2차 가공시 경화성이 떨어지며, 12중량% 이상이면 지나치게 경화되어 가공성이 떨어지게 된다.The water content of the urea resin is preferably in the range of 7 to 12% by weight based on the total weight of the impregnating composition. If the water content is less than 7% by weight, the curing property is poor in the second step. So that the workability is lowered.
상기 1차 함침된 종이는 오븐을 통과하여 1차로 건조된 후 2차 함침 조성물에 다시 함침 코팅된다.The primary impregnated paper is first dried through an oven and then impregnated again with the second impregnating composition.
2차 함침 코팅 조성물은 멜라민 수지, 멜라민 경화제, 물, 가소제 및 이형제, 도장약제를 포함한다. 멜라민 수지는 열경화성 수지의 일반적인 접착제로 주재료로 사용되며, 전제 조성물 중 85~90중량%이 바람직하다.The second impregnating coating composition includes melamine resin, melamine curing agent, water, plasticizer and release agent, coating agent. The melamine resin is a general adhesive for a thermosetting resin and is used as a main material. It is preferably 85 to 90% by weight of the total composition.
멜라민 경화제는 2차 보드접착 가공시 일정한 압력, 온도, 시간에 표면에 접착하여 경화되도록 하는 역할을 하며 전제 조성물 중 멜라민 경화제 0.3~0.6중량% 가 바람직하다.The melamine curing agent serves to adhere to the surface at a certain pressure, temperature, and time for curing, and is preferably 0.3 to 0.6% by weight of a melamine curing agent in the total composition.
그리고 멜라민수지의 점도 조절용으로 물이 포함되며, 함침 조성물 전체에 대해 3~7중량% 를 포함함이 바람직하며, 만일 3중량% 미만인 경우에는 2차 가공시 경화성이 떨어지며, 7중량% 이상이면 지나치게 경화되어 가공성이 떨어지게 된다.It is preferable to contain 3 to 7% by weight based on the total weight of the impregnation composition. If it is less than 3% by weight, the curing property is deteriorated in the secondary processing. If the amount is more than 7% by weight, So that the workability is lowered.
그리고 가소제 및 이형제를 포함한다. 가소제는 코팅층의 유연성과 침투성을 증가시켜주기 위함이며 이형제는 가공시 프레스 경면판에서 분리가 용이하게 하기 위하여 첨가하는 것으로 전체조성물에서 0.1~0.3중량%가 바람직하다.And plasticizers and mold release agents. The plasticizer is added to increase the flexibility and permeability of the coating layer, and the release agent is added in order to facilitate separation from the press mirror plate during processing, and it is preferably 0.1 to 0.3% by weight in the total composition.
또한 도장약제로서 부착증진제 및 부착첨가제를 첨가하며 2차 가공시(PB, MDF 접착) 도장되어지는 도료와 화학적 결합을 통해 LPM 표면에 스크래치(굴곡)을 형성하여 재도장을 할 수 있게 하며 2차 공정시, 샌딩실라, 우드실라, 센딩 등을 제외할 수 있게 된다. 도장약제는 전체 조성물에서 5~10중량% 인것이 바람직하다.In addition, adhesion enhancer and adhesion additive are added as a coating agent, and it is possible to form a scratch (bend) on the LPM surface through chemical bonding with the paint to be painted in the second processing (PB, MDF adhesion) In the process, sanding sila, wood sila, sanding, etc. can be excluded. The coating agent is preferably 5 to 10% by weight in the total composition.
상기 2차 함침 조성물에 함침된 종이는 다시 오븐을 통과하여 건조된 후 냉각한다.The paper impregnated in the second impregnation composition is again passed through an oven, dried and then cooled.
이하에서는 실시예를 통해 본 발명의 제조공정을 상세히 설명하기로 한다.Hereinafter, the production process of the present invention will be described in detail through examples.
실시예 1: LPM용 코팅지의 제조Example 1: Preparation of coated paper for LPM
수성잉크로 인쇄된 상태의 모양지(70g/㎡)를 요소수지 90중량%, 요소경화제 1%, 물 9%로 조성된 1차 함침 조성물에 함침시켰다. (70 g / m < 2 >) in the state of being printed with aqueous ink was impregnated with the primary impregnation composition composed of 90 wt% of urea resin, 1% of urea curing agent and 9% of water.
상기 1차 함침된 종이를 125 ~ 135 ℃의 오븐을 통과하여 건조시켰다. 건조된 종이는 다시 멜라민수지(87.9%), 멜라민 경화제(0.46%), 물(4.4%), 가소제 및 이형제(0.24%), 도장약제(7%)로 조성된 함침 조성물에 함침 코팅시켰다. 함침된 종이는 다시 140 ~ 160 ℃의 오븐을 통과하여 건조시킨 후 냉각하여 필요한 크기로 커팅하였다.The primary impregnated paper was passed through an oven at 125-135 占 폚 and dried. The dried paper was again impregnated with an impregnation composition composed of melamine resin (87.9%), melamine hardener (0.46%), water (4.4%), plasticizer and release agent (0.24%) and coating agent (7%). The impregnated paper was again dried in an oven at 140 to 160 ° C, cooled, and cut to the required size.
실시예 2: 은폐력이 강화된 LPM용 코팅지의 제조Example 2: Preparation of coated paper for LPM with enhanced hiding power
상기 실시예 1에서 2차 함침 조성물을 멜라민수지(80.1%), 멜라민 경화제(0.24%), 물(5.6%), 가소제 및 이형제(0.24%), 도장약제(6%), TiO2(7.4%)로 조성하고 나머지 공정은 동일하게 하여 코팅지를 제조하였다.Example 1 In the second impregnation the composition of a melamine resin (80.1%), a melamine curing agent (0.24%), water (5.6%), a plasticizer, a release agent (0.24%), coating agent (6%), TiO 2 ( 7.4% ) And the remaining steps were the same to prepare a coated paper.
따라서, 상기 코팅지는 백색LPM 에 비해 은폐력 및 광택이 우수하다.Therefore, the coated paper is superior in hiding power and gloss as compared with white LPM.
실험예 1Experimental Example 1
실시예 1과 같이 LPM을 제조하여 종이에 멜라민을 함침하여 건조시킨 상태에서 MDF나 PB에 열과 압력으로 접착한 일반 LPM 을 제조하고 그 위에 포리도장을 하였다. 도장용 LPM 위에 포리도장이 된 경우, 도 2에서 보듯이, 칼로 스크래치를 내도 부착력이 우수하여 칼 주변에 박리가 없고 칼자국만 생기는 것을 확인하였다.LPM was prepared in the same manner as in Example 1, and LPM, which was adhered to MDF or PB by heat and pressure, was prepared by impregnating paper with melamine and dried. As shown in FIG. 2, when the paint was applied on the LPM for painting, it was confirmed that even when scratching with a knife was performed, there was no peeling around the knife and only nicks were formed.
비교예 1Comparative Example 1
종이에 멜라민을 함침하여 건조시킨 상태에서 MDF나 PB에 열과 압력으로 접착한 일반 LPM을 제조하고 그 위에 포리도장을 하였다.General LPM was prepared by impregnating MDF or PB with heat and pressure under the condition that the paper was impregnated with melamine and dried.
상기 LPM에 칼로 스크래치를 내었더니, 도 3에서와 같이 칼이 지나가면서 주변이 떠버리는 현상이 발생하였다.When the LPM was scratched by a knife, the knife was passed around as shown in FIG.
Claims (1)
상기 함침된 종이를 125 ~ 135 ℃의 오븐을 통과하여 1차 건조하는 단계;
상기 건조된 종이의 상면을 멜라민 수지 85~90중량%, 물 3~7중량%, 멜라민 경화제 0.3~0.6중량%, 가소제 및 이형제 0.1~0.3중량%, 부착증진제 또는 부착첨가제 5~10중량% 를 포함하는 2차 함침코팅 조성물로 함침과 코팅하는 단계;
상기 함침 코팅된 종이를 140 ~ 160 ℃의 오븐을 통과하여 2차 건조하는 단계; 및
상기 건조된 종이를 냉각하는 단계를 포함하는 LPM의 제조방법.Impregnating the paper with a primary impregnating composition comprising 88 to 92% by weight of urea resin, 7 to 12% by weight of water and 0.5 to 2.5% by weight of urea curing agent;
Drying the impregnated paper by passing through an oven at 125 to 135 DEG C;
The top surface of the dried paper is coated with a resin composition containing 85 to 90% by weight of melamine resin, 3 to 7% by weight of water, 0.3 to 0.6% by weight of a melamine curing agent, 0.1 to 0.3% by weight of a plasticizer and a release agent, Impregnating and coating with a second impregnating coating composition comprising;
Drying the impregnated coated paper through an oven at 140 to 160 ° C; And
And cooling the dried paper.
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