KR19990069126A - Wood block and wood block manufacturing method - Google Patents
Wood block and wood block manufacturing method Download PDFInfo
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- KR19990069126A KR19990069126A KR1019980003169A KR19980003169A KR19990069126A KR 19990069126 A KR19990069126 A KR 19990069126A KR 1019980003169 A KR1019980003169 A KR 1019980003169A KR 19980003169 A KR19980003169 A KR 19980003169A KR 19990069126 A KR19990069126 A KR 19990069126A
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Abstract
본 발명은 목질계 폐기물 및 폐자원을 재활용하여 목질보도블록 및 기타 목질블록을 제조하는 방법에 관한 것으로, 함수율 10 내지 15%인 목질입자들과 상기 입자들이 완전건조된 무게를 기초한 무게비로 수용성 유기접착제 10 내지 20%를 교반하는 단계와,The present invention relates to a method for producing a wood footing block and other wood block by recycling wood waste and waste resources, the water-soluble organic in a weight ratio based on the weight of the dry particles and the total dry weight of the particles 10-15% Stirring 10-20% of the adhesive,
상기 접착제와 교반된 입자들을 높이 30cm이상의 목질매트로 성형하여 목질매트 측면에 복수의 구멍을 형성하는 단계와,Forming a plurality of holes on the side of the wood mat by molding the adhesive and the stirred particles into a wood mat having a height of 30 cm or more;
상기 목질매트를 온도범위 140℃ 내지 180℃에서, 압력 30∼50kgf/cm2을 최소 30초이상 적용하는 열압단계로 이루어지며, 본 발명인 목질블록 제조방법에 의하면, 종래 파티클보드나 섬유판과는 달리 목질블록이 두께 30mm이상으로 제조되어도 표층과 심층간의 밀도경사가 현저하게 줄어들게 되며, 성형된 매트의 상·하면 뿐만 아니라 내측면에서도 열압하는 것과 같은 효과를 얻을 수 있어, 목질폐재간 결합력이 향상되어 수분흡수율, 흡수두께 팽창율과 같은 물리적 성질 뿐만 아니라 강도적 성질이 우수한 목질블록을 제조할 수 있다.The wood mat at a temperature in the range 180 to 140 ℃ ℃, made of a hot-press step of applying at least 30 seconds the pressure 30~50kgf / cm 2, according to the production method of the present inventors wood block, unlike the prior art the particle board or fiber board Even if the wood block is manufactured with a thickness of 30 mm or more, the density gradient between the surface layer and the deep layer is remarkably reduced, and the same effect as the thermal pressure is obtained not only on the upper and lower surfaces of the molded mat but also on the inner surface, thereby improving the bonding strength between the wood waste materials. It is possible to produce wood blocks having excellent strength properties as well as physical properties such as water absorption rate and absorption thickness expansion rate.
Description
본 발명은 목질블록 제조방법에 관한 것으로 더욱 상세하게는 목질계 폐기물 및 폐자원을 재활용하여 목질보도블록 및 기타 목질블록을 제조하는 방법에 관한 것이다.The present invention relates to a method for producing wood blocks, and more particularly, to a method for manufacturing wood footpath blocks and other wood blocks by recycling wood waste and waste resources.
목재관련산업에서는 필연적으로 가공의 부산물로서 막대한 양의 폐재가 발생하게 된다. 이러한 폐재의 일부인 저비중재 및 침엽수재는 목질상판재료인 파티클보드나 섬유판 제조용 원료로 이용되고 있다.In the wood industry, a huge amount of waste is generated as a by-product of processing. The low specific gravity and softwoods, which are part of these waste materials, are used as raw materials for the production of particle boards and fiberboards, which are wood top plates.
종래의 파티클보드나 섬유판은 목재 파티클(particle)이나 목섬유(wood fiber)를 합성수지 접착제와 기타 첨가제를 혼합하여 카울(caul)위에서 매트를 성형한 후 열압기 내에서 열압하여 보드를 제조하고 있다. 그러나 상기의 종래 파티클보드 또는 섬유판 제조방법으로는 두께가 30mm이상 되는 목질 결합체를 종래의 시멘트 블록이나 벽돌을 대체할 수 있을 정도의 물리적 및 강도적 성질을 가진 보드로 제조하기에는 매우 곤란하였다.Conventional particleboard or fiberboard is manufactured by mixing the wood particles (wood) or wood fibers (synthetic resin) and other additives to form a mat on a cowl (caul) and then hot pressing in a thermocompressor. However, the above-described method for producing a particle board or a fiber board was very difficult to produce a wood composite having a thickness of 30 mm or more with a board having physical and strength properties that can replace a conventional cement block or brick.
더욱 상세히 설명하면, 목질폐재의 특성상 두께 30mm 내지 50mm의 목질결합체를 제조하기 위해서는 성형된 매트의 높이가 30cm이상 유지되어야 한다. 그러나 상기 정도 높이의 매트를 압축판에 삽입하여 열압하면 성형된 매트가 측면으로 밀리거나 무너져 내려 성형된 매트형상이 파괴되어 버린다. 아울러 열압을 직접 받게 되는 상·하표면부에서는 매트중심층보다 열전달이 빨라지게 되어 첨가된 열경화성 접착제의 경화가 빨리 이루어지나, 매트중심층에서는 열이 전달되지 않아 상기 접착제의 충분한 경화가 이루어지지 않는 현강이 일어난다. 따라서 제조된 목질결합체는 결합체 두께 방향으로 표층에서 중심층으로의 밀도차이가 심하게 된다. 이로 인하여 박리강도가 낮아지게 되고, 전체적으로 흡수두께팽창율, 수분흡수율 등의 치수안정성이 낮아, 보도블록이나 벽돌을 대체하기에는 품질상 문제점이 있었다.In more detail, in order to manufacture a wood binder having a thickness of 30 mm to 50 mm due to the nature of the wood waste material, the height of the molded mat should be maintained at least 30 cm. However, when the mat of the above-mentioned height is inserted into the compression plate and thermo-compressed, the molded mat is pushed or collapsed to the side and the molded mat shape is destroyed. In addition, in the upper and lower surface portions that are directly subjected to thermal pressure, heat transfer is faster than that of the mat center layer, so that the added thermosetting adhesive is quickly cured, but heat is not transferred from the mat center layer so that the adhesive is not sufficiently cured. Hyungang rises. Therefore, the produced wood binder has a significant density difference from the surface layer to the center layer in the binder thickness direction. As a result, peeling strength is lowered, and overall dimensional stability such as absorption thickness expansion rate and water absorption rate is low, and there is a problem in quality to replace the sidewalk block or brick.
또한, 고비중재나 목공예용재로 이용되고 있는 활엽수재의 가공시에 발생한 부산물은 파티클보드로 제조할 경우 무게가 너무 커서 현재 용도가 전무한 실정에 있다.In addition, the by-products generated during the processing of the hardwood material used as a heavy non-intermediate or woodworking material is too large when manufactured with a particle board is currently in use in the absence of any use.
한편, 종래의 시멘트 보도블록 및 벽돌은 도시의 회색화를 초래하고 있으며, 보행시 착지감이 좋지 않아 생체에 부담을 매우 크게 줄 뿐만 아니라 인간의 감성에 미치는 영향이 매우 부정적으로 알려져 있다. 또 이들 시멘트 블록이나 벽돌은 무거워 운반 및 시공에 어려움이 많다는 단점을 가지고 있었다.On the other hand, conventional cement sidewalk blocks and bricks are causing graying of the city, and the landing feeling is poor, not only to greatly increase the burden on the living body, but also have a very negative effect on human emotion. In addition, these cement blocks or bricks were heavy and had a lot of difficulties in transportation and construction.
이에 발명자들은 목질계 폐자원, 특히 고비중의 목질폐재를 재활용하여 종래의 시멘트 보도블록이나 벽돌을 대체할 수 있는 목질블록을 제조하기 위한 방법을 연구하였다. 그 결과, 일정 두께 이상의 목질매트를 성형과 동시에 열압착 할 경우에 있어, 앞서 언급한 통상의 방법으로는 성형이 불가능하나, 측면천공 및 특정 열압착조건을 적용하면 두께 35mm이상의 목질블록을 제조할 수 있음을 알게 되었다.Accordingly, the inventors have studied a method for manufacturing wood blocks that can replace conventional cement sidewalk blocks or bricks by recycling wood waste materials, particularly heavy wood waste materials. As a result, in the case of thermocompression bonding of a mat of a certain thickness or more at the same time with the molding, it is impossible to form by the conventional method mentioned above.However, if the side drilling and specific thermocompression conditions are applied, a wood block having a thickness of 35 mm or more can be manufactured. I found out.
본 발명의 목적은 종래의 시멘트 보도블록이나 벽돌을 대체할 수 있는 두께 35mm이상의 목질블록 제조방법을 제공하는 것이다.An object of the present invention is to provide a wood block manufacturing method having a thickness of 35mm or more that can replace the conventional cement sidewalk block or brick.
본 발명의 또 다른 목적은 목재의 천연적인 특성을 가지는 두께 35mm이상의 목질블록을 제공하는 것이다.Still another object of the present invention is to provide a wood block having a thickness of 35 mm or more having the natural characteristics of wood.
이하, 본 발명을 실시예를 참조하여 상세히 설명하나 이에 국한되는 것은 아니다.Hereinafter, the present invention will be described in detail with reference to Examples, but is not limited thereto.
(실시예)(Example)
실시예 1Example 1
천연건조하여 함수율 약 10% 내지 15%로 조절한 물푸레나무 폐잔재 입자들에, 입자들의 완전건조된 무게를 기초로 한 무게비로 수용성 폐놀수지접착제를 15% 첨가하여 혼합장치를 이용하여 완전히 교반하였다. 상기 교반된 입자들을 성형장치를 이용하여 높이 30cm로 목질매트를 성형한 후 상기 목질매트 측면에 5cm 간격으로 직경 2mm의 구멍을 가공하였다. 이후, 측면에 천공된 목질매트를 온도범위 140℃ 내지 180℃에서, 압력 30∼50kgf/cm2을 최소 30초이상 적용하여 두께 30mm, 비중 0.8로 목질블록을 제조하였다.To the ash wood waste residue particles which were dried by adjusting the moisture content to about 10% to 15% by natural drying, 15% of the water-soluble waste resin adhesive was added at a weight ratio based on the completely dry weight of the particles, and thoroughly stirred using a mixing apparatus. . After the agitated particles were formed into a wood mat with a height of 30 cm using a molding apparatus, holes of a diameter of 2 mm were processed at intervals of 5 cm on the sides of the wood mat. Thereafter, the wood mat perforations on the side in the temperature range 180 to 140 ℃ ℃, by applying for at least 30 seconds the pressure 30~50kgf / cm 2 for the wood block to 30mm thickness, specific gravity of 0.8 was prepared.
목질블록의 형태는 한국공업규격 KSF 4419, "보차도용 콘크리트 인터로킹 블록"에서 제시한 기본블록중 I형과 동일한 형상이었다.The shape of the wood block was the same shape as type I among the basic blocks presented in Korean Industrial Standard KSF 4419, "Concrete Interlocking Block for Pedestrian Road."
실시예 2Example 2
실시예 1과 동일하게 실시하되, 단지 수용성 폐놀수지접착제 첨가량을 10%, 저밀도 폴리에틸렌(LDPE)을 20% 첨가하였다.In the same manner as in Example 1, only 10% of water-soluble waste resin adhesive was added and 20% of low density polyethylene (LDPE) was added.
실시예 3Example 3
실시예 1과 동일하게 실시하되, 단지 수용성 폐놀수지접착제 첨가량을 20%, LDPE를 10% 첨가하였다.In the same manner as in Example 1, only 20% of the water-soluble waste resin adhesive was added and 10% of LDPE was added.
본 실시예들에 있어서, 목질입자 원재료로는 물푸레나무입자를 이용하였으나, 톱밥, 대패밥 등 목재가공산업 부산물, 고지, 폐지, 제지슬러지 등 종이류, 그리고 짚 등의 식물성 폐기물 등이 모두 사용가능하다.In the present exemplary embodiment, ash wood particles are used as the raw material of wood particles, but by-products of wood processing industry such as sawdust and bamboo rice, papers such as high paper, waste paper, paper sludge, and vegetable waste such as straw can be used.
또한, 본 실시예들에 있어서, 접착제로는 폐놀수지접착제가 이용되었으나, 요소수지접착제, 멜라민수지접착제, 요소·멜라민 공축합수지접착제등 열경화성 수지접착제가 사용될 수 있음은 물론이다.In addition, in the present embodiments, the waste glow resin adhesive is used as the adhesive, but of course, a thermosetting resin adhesive such as urea resin adhesive, melamine resin adhesive, urea-melamine co-condensation resin adhesive may be used.
접착제 첨가량의 범위는 10%이상이면 본 발명의 목적을 달성할 수 있고, 바람직하기로는 15∼20% 범위로 첨가하는 것이다.The range of adhesive addition amount can achieve the objective of this invention as it is 10% or more, Preferably it adds in 15 to 20% of range.
첨가제로 왁스나 파라핀과 같은 내수제를 1∼5% 첨가할 수 있으며, 기타 첨가제로는 목재보존제, 난연제, 착색제 등을 첨가할 수 있다.As an additive, a water-resistant agent such as wax or paraffin may be added in an amount of 1 to 5%, and as other additives, wood preservatives, flame retardants, and colorants may be added.
또한, 적용되는 성형장치에 따라, 목질블록의 형태가 달라질 수 있음은 물론이다.In addition, of course, depending on the molding apparatus applied, the shape of the wood block may vary.
상기 실시예에 의한 목질블록 물성실험결과는 다음과 같다.The wood block physical property test results according to the embodiment are as follows.
실시예 1에 의한 목질블록은 기건비중 0.86, 수분흡수율 13.35%, 흡수두께 팽창율 2.83%, 휨강도 203.02kgf/cm2, 박리강도 4.87kgf/cm2두께방향 밀도분포는 평균밀도에 대한 최소밀도의 비율은 92%이었다.Wood block according to Example 1 has a dry weight ratio of 0.86, moisture absorption rate 13.35%, absorption thickness expansion rate 2.83%, flexural strength 203.02kgf / cm 2 , peel strength 4.87kgf / cm 2 thickness direction density distribution is the ratio of the minimum density to the average density Was 92%.
실시예 2에 의한 목질블록은 기건비중은 0.91, 수분흡수율 14.96%, 두께팽창율 5.90%, 휨강도 160.65kgf/cm2, 박리강도 17.08kgf/cm2이었다.The wood block according to Example 2 had a dry weight of 0.91, a water absorption rate of 14.96%, a thickness expansion rate of 5.90%, a bending strength of 160.65kgf / cm 2 , and a peeling strength of 17.08kgf / cm 2 .
실시예 3에 의한 목질블록은 기건비중은 0.87, 수분흡수율 11.30%, 두께팽창율 4.50%, 휨강도 172.71kgf/cm2, 그리고 박리강도 22.99kgf/cm2이었다.The wood block according to Example 3 had a dry weight of 0.87, water absorption rate of 11.30%, thickness expansion rate of 4.50%, flexural strength of 172.71kgf / cm 2 , and peeling strength of 22.99kgf / cm 2 .
본 발명인 목질블록 제조방법에 의하면, 종래 파티클보드나 섬유판과는 달리 목질블록이 두께 30mm이상으로 제조되어도 표층과 심층간의 밀도경사가 현저하게 줄어들게 되며, 성형된 매트의 상·하면 뿐만 아니라 내측면에서도 열압하는 것과 같은 효과를 얻을 수 있어, 목질폐재간 결합력이 향상되어 수분흡수율, 흡수두께 팽창율과 같은 물리적 성질 뿐만 아니라 강도적 성질이 우수한 목질블록을 제조할 수 있다.According to the method of manufacturing wood block of the present invention, unlike the conventional particleboard or fiberboard, even if the wood block is manufactured to a thickness of 30mm or more, the density gradient between the surface layer and the deep layer is significantly reduced, as well as the upper and lower surfaces as well as the inner side of the molded mat Since it is possible to obtain an effect such as hot pressing, the bonding force between wood waste materials is improved, so that wood blocks having excellent strength properties as well as physical properties such as water absorption rate and absorption thickness expansion rate can be manufactured.
또한 본 발명에 의하면 현재 용도가 전무한 고비중재의 목질폐기물을 재활용하여 새로운 품질의 목질재료를 만들 수 있으며, 이 발명품은 종래의 시멘트 보도블록이나 벽돌의 대체가 가능하다.In addition, according to the present invention it is possible to recycle the wood waste of the heavy non-intermediate, which is currently no use, to create a new quality wood material, the invention can be replaced by conventional cement sidewalk blocks or bricks.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100614601B1 (en) * | 1999-09-11 | 2006-08-25 | 강춘원 | an wood particle sound-absorbing board and a manufacturing method therefor |
| KR100770003B1 (en) * | 2007-03-20 | 2007-10-25 | (주)에리트퍼니처 | Toughened mold inner material and manufacturing process thereof |
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| KR20020069783A (en) * | 2001-02-28 | 2002-09-05 | 남주작 | Manufacturing method for high hardness compression timber |
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1998
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100614601B1 (en) * | 1999-09-11 | 2006-08-25 | 강춘원 | an wood particle sound-absorbing board and a manufacturing method therefor |
| KR100770003B1 (en) * | 2007-03-20 | 2007-10-25 | (주)에리트퍼니처 | Toughened mold inner material and manufacturing process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100277290B1 (en) | 2001-03-02 |
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