KR20050093608A - Particle board faced with yellow soil-cloth and manufacturing process thereof - Google Patents

Abstract

In the present invention, in the manufacture of a particle board by compressing and molding a mixture consisting of fibrous particles and a synthetic resin adhesive in the form of a flat plate, first, the ocher diluting solution and the water pool are coated on the mineral cloth, and the resultant is pressed and dried to prepare the ocher cloth. After dropping the mixture of fibrous pieces and adhesive on the loess, the loess is compression molded into a flat plate using a compression roller and heat treated sequentially at a temperature of 60 ° C., 80 ° C. and 120 ° C. for 20 to 30 minutes. It relates to a method of manufacturing a particle board with a cloth attached, and to an ocher plywood manufactured by such a method.

Description

Particle board faced with yellow soil-cloth and manufacturing process

The present invention relates to a particle board to which ocher cloth is attached, and a method of manufacturing the same, and more specifically, to a particle board made of a fibrous material such as pine needles or chaff and a synthetic resin adhesive, the ocher cloth coated with ocher The present invention relates to a particle board (hereinafter referred to as 'ocher plywood') and a method of manufacturing the same, which are attached to ocher cloth having both the advantages of the particle board and the efficacy of the loess.

 In general, artificial plywood can be classified into so-called veneer plywood, aggregated wood, artificial wood, etc., which is a medium-density fibreboard that is pressed into a flat plate shape to have a medium density by mixing the wood with crushed wood and glue Medium-density fiberboard (MDF) and fibrous particles such as wood are coated with a synthetic resin spray, and then classified into particle boards which are thermoformed at high density. Particle boards are also called chipboards or flake boards. They are not only directional and less prone to cracking in strength, shrinkage, or expansion, but also have the advantages of easy processing. It has been used a lot.

However, in spite of these advantages, particle boards contain a large amount of synthetic resin adhesives, which, when used as furniture or interior finishing materials, may release harmful volatile contaminants such as formaldehyde, which may adversely affect the human body. It has been raised. Furthermore, from May 2004 onwards, building materials that emit a lot of volatile organic compounds (VOCs), such as formaldehyde, will be restricted from being used in public facilities such as apartments, libraries and hospitals. do. In response to these demands, various efforts have been made to develop new artificial plywood that can improve the quality of human life using more environmentally friendly materials. As a part of this effort, a particle board using chaff, sugar peel, rice straw, etc. has been developed as a main material, and Patent Application No. 2004-18042 filed by the present inventors relates to a pine leaf plywood using pine needles and charcoal as a main material. The technology is introduced.

On the other hand, ocher is one of the most intimate building materials for humans, and has been widely used as a material for bricks since ancient times. In particular, as the mysterious performance and effects of loess have been scientifically proven, various building materials using loess are being developed one after another. For example, Korean Patent Publication No. 2003-84122 introduces a technique for manufacturing plywood consisting of 40 to 50% of synthetic resin, 5 to 10% of ocher, and 40 to 60% of rice hull. Excessive synthetic resin is needed because it lowers, thus the strength of the plywood is weak and the weight is too heavy.

In addition, Korean Patent Publication No. 2003-68764 filed by the present inventors introduces a technique of applying an adhesive to an existing plywood, and attaching ocher cloth coated with ocher and water grass on it. This technology has a significant technical meaning in that it can feel the texture of soft ocher, and can manufacture a new concept of ocher plywood, which is easy to repair, in a relatively easy way. There has been some room for improvement in that it should be used.

The present invention, in order to solve the problems of the prior art as described above, in the manufacture of ocher plywood attached to the surface of the artificial plywood, to provide a new method that does not need to apply an adhesive separately to attach the ocher cloth There is a purpose.

In addition, the present invention is a loess-coated mineral wood cloth, that is, ocher cloth is attached to the particle board made of environmentally friendly fibrous pieces, such as pine needles, charcoal powder, chaff, so that the new ocher plywood having both the advantages of the particle board and the efficacy of the loess The purpose is to provide.

Hereinafter, the present invention will be described in detail.

In the present invention, in the manufacture of a particle board by compressing and molding a mixture consisting of fibrous particles and a synthetic resin adhesive in the form of a flat plate, first, the ocher diluting solution and the water pool are coated on the mineral cloth, and the resultant is pressed and dried to prepare the ocher cloth. After dropping the mixture of fibrous pieces and adhesive on the loess, the loess is compression molded into a flat plate using a compression roller and heat treated sequentially at a temperature of 60 ° C., 80 ° C. and 120 ° C. for 20 to 30 minutes. It is a manufacturing method of particle board with cloth. At this time, the ocher cloth may be attached only to one surface of the flat plate, or may be attached to both upper and lower surfaces.

In addition, the present invention is the loess coated with ocher and water grass on the surface of the particle board consisting of 33 ~ 45% by weight of pine needles, 10 to 18% by weight of charcoal powder having a particle size of 30 to 150 mesh, and 40 to 52% by weight of a synthetic resin adhesive. The ocher cloth is attached to the particle board, characterized in that the cloth is attached.

Hereinafter, the present invention will be described in more detail.

In order to manufacture the ocher plywood according to the present invention, first the ocher cloth should be manufactured. The manufacturing method of the ocher cloth is described in detail in Korean Patent Publication No. 2003-68764 filed by the present inventor. In summary, first, the ocher cloth is impregnated with the ocher cloth and the ocher powder is impregnated with the ocher cloth. The attached ocher cloth is pressed and dried, and the same process is repeated three or four times. Here, by mixing natural dyes such as mugwort, sesame or aloe juice, charcoal powder and the like with ocher, it is possible to produce a variety of color ocher cloth by supplementing the monotonous color of the ocher cloth. Then, the oak water pool is prepared by mixing the diluted wheat flour and the diluted ocher water. The oak water pool is impregnated with the mineral cloth, and the ocher water pool is then pressed and dried. .

In this way, after the ocher cloth is manufactured, a mixture of fibrous pieces and synthetic resin adhesive to be used as the main material of the particle board is dropped on the ocher cloth, and extruded to form a flat plate shape with the ocher cloth and the fibrous main material integrally using a roller compressor. Mold. In this way, the yellow clay cloth is attached to the fibrous piece by the synthetic resin adhesive mixed with the fibrous piece. Subsequently, the plate-like extrudate is heat treated at a temperature of 60 ° C., 80 ° C. and 120 ° C. for 20 to 30 minutes in order to cure the synthetic resin, thereby completing the ocher plywood according to the present invention. At this time, it is preferable to use far infrared rays or hot air as the heat treatment method.

In the present invention, a fibrous material that has conventionally been used as a main material for producing a particle board, such as wood debris, chaff, sugar bark, straw, charcoal powder, pine needles may be used or a mixture of two or more, but Considering the object of the invention, it is good to use a mixture of environmentally friendly materials, such as pine needles and charcoal powder easily available around us, or to add chaff as an auxiliary component thereto.

The reason why the pine needles and charcoal powder is recommended as fibrous pieces of the party board in the present invention, first, the pine needles contain a large amount of volatile terpene (terpene), which gives people a soft pine flavor, It is very unpleasant to harmful insects such as cockroaches and house ants, which not only prevents the habitat or access of harmful insects, but also has the effect of preventing the habitat of decaying bacteria such as molds. Charcoal powder fills the space between pine needles, improves moldability, reduces the amount of synthetic adhesives used, and deodorizes and removes various pollutants generated from synthetic adhesives. Chaff, an auxiliary ingredient, fills the space between pine needles and pine needles along with charcoal powder, and plays a role in supplementing the function of pine needles.

As the synthetic resin adhesive, any of thermoplastic resins and thermosetting resins that have been conventionally used for producing particle boards may be used. For example, any one selected from polyethylene, polypropylene, vinyl chloride resin, vinyl acetate resin, polystyrene, ABS resin, acrylic resin, epoxy resin, phenol resin, polyurethane resin, unsaturated polyester resin, or a mixture of two or more thereof may be used. However, it is preferable to use polymethyl methacrylate (PMMA) in the thermoplastic resin and unsaturated polyester resin in the thermosetting resin.

On the other hand, the present invention is characterized in that the most adhering ocher cloth coated ocher on the surface of the particle board. As for the efficacy of ocher, it is known that ocher emits far infrared rays which are beneficial to the human body when subjected to heat or light to promote blood circulation in the human body. Far infrared rays are infrared rays having a wavelength of 25 µm or more, which is the longest of the infrared rays. Generally, light is well reflected when the wavelength is short, and when the wavelength is long, it is absorbed well when it reaches the object. If you breathe easily warms the body. This heat action has the effect of eliminating the bacteria that cause various diseases, and helps to expand the capillaries and blood circulation and tissue formation. In addition, by touching the water and protein molecules that make up the cells, the cells are shaken finely 2,000 times per minute to activate cell tissue, which is effective in preventing various adult diseases such as aging, promoting metabolism, and chronic fatigue. In addition, ocher is known to have effects such as promoting sweating, pain relief, heavy metal removal, sleep, deodorization, antibacterial, mold growth prevention, dehumidification, and air purification. And beddings, medical devices, and jjimjilbang.

As such, the ocher plywood according to the present invention is a particle board, while the surface of the ocher is coated with ocher, so that the combination of both the advantages of the particle board and the efficacy of the ocher.

For one embodiment of the present invention, the present invention is 33 to 45% by weight pine needles, 10 to 18% by weight charcoal powder having a particle size of 30 to 150 mesh, and polymethyl methacrylate (PMMA) or unsaturated polyester resin On the surface of the particle board made of 40 to 52% by weight, the ocher cloth is attached to the particle board, characterized in that the ocher and water grass coated ocher cloth is attached.

At this time, if the content of the pine needles is 33% by weight or less, the content of the pine needles is too small, so the effect as a pine needle plywood is very weak, the resin content is too much to increase the manufacturing cost and the weight of the plywood is too heavy There is concern about quality. On the contrary, if the content of the pine needles is more than 45% by weight, the content of the resin is too small, causing problems such as deterioration of the strength of the plywood. In addition, the charcoal powder is most effective to use a particle size of 30 to 150 mesh in consideration of compatibility with the synthetic resin adhesive. If the content of the synthetic resin adhesive is 40% by weight or less, the strength and formability of the plywood is poor, on the contrary, when the content of more than 52% by weight, the performance of the pine needles is inhibited, the weight of the plywood is increased and the production cost is not good.

In one embodiment of the present invention, the pine needle plywood of the present invention is 30 to 38% by weight of pine needles, 10 to 18% by weight of charcoal powder having a particle size of 30 to 150 mesh, chaff 3 to 7% by weight, and synthetic resin adhesive 40 It is a particle board attached to the ocher cloth, characterized in that the ocher and wormwood, and the surface of the particle board made of 52% by weight, the ocher cloth coated with ocher.

Hereinafter, examples of the present invention will be described. However, the scope of the present invention is not limited to the following examples.

Example

Manufacture of Yellow Soil

First, the ocher is diluted in 50 ℃ water, filtered with a fine sieve and dried to remove impurities, 400 g of the ocher powder and 1.5 liters of mugwort juice prepared in this way are diluted in 1.5 liter of water and stirred for 5 minutes. The loess was impregnated three times with ocher cloth, and the ocher cloth containing the ocher powder was compressed with a hotplate at 100 ° C. for 2 minutes and dried. The above process is repeated three times.

Meanwhile, by dissolving 500 grams of wheat flour in 1.5 liters of water and heating it at a temperature of 100 ° C. for 2 minutes, a water pool was prepared, and then mixed with 1.5 liters of the diluted ocher water to prepare an ocher water pool, followed by the ocher water pool. After removing the ocher cloth for 2 minutes, drying it for 1 minute with hot air at 100 ° C., and pressing and drying it for 2 minutes with a hot plate at 100 ° C.

<Manufacture of ocher plywood>

Using a rotary mixer, mix 4.5 Kg of methyl methacrylate and 50 g of MEK-PO, add 15 Kg of charcoal powder with a particle size of 30 to 150 mesh, and then 3.2 Kg of dried pine needles and shredded for 3 days in the shade. Add 7.0 kg of pine needles and mix well.

The ocher cloth was then placed on a steel belt caster with a temperature of 30 ° C., and the pine needle / resin mixture was dropped on it, and then covered with the ocher cloth on top of it, using a 100 Kg three-stage roller compactor with a thickness of 20 mm, 18 Press in order to be mm, 15 mm. At this time, by irradiating with far-infrared heat at 8 ℃, 8 minutes at 100 ℃, 8 minutes at 160 ℃ for 7 minutes sequentially and then naturally cooled.

As a result of measuring the physical properties of the pine needles / ocher plywood prepared according to the above example, the strength was found to be much lighter than the existing wood plywood even without any slight inferiority. The smell was a little bit of scent, no odor of other volatile organic substances, the color was almost jade, and the texture of ocher was apparent. In addition, although it was left for more than 120 hours under severe conditions with a relative humidity of 90% and a temperature of 60 ° C, no change in physical properties such as cracking or warping occurred.

 The present invention in the manufacture of ocher plywood attached to the surface of the artificial plywood, there is no need to use an adhesive to attach the ocher cloth, in particular a particle board consisting of environmentally friendly fibrous pieces such as pine needles, charcoal powder, chaff Ocher is coated with ocher cloth, that is, ocher cloth is attached, there is an effect of providing a new ocher plywood having both the advantages of the particle board and the efficacy of the ocher.

Claims (6)

In manufacturing a particle board by pressing and molding a mixture of fibrous particles and a synthetic resin adhesive in the form of a flat plate, First, the ocher dilution and water pool is coated on the mineral wood, and it is pressed and dried to prepare an ocher cloth. A mixture of fibrous pieces and adhesive is dropped on the ocher cloth, and then compression-molded into a flat plate using a compression roller. Particle board with a yellow soil cloth is characterized in that the heat treatment for 20 to 30 minutes in sequence at a temperature of ℃ and 120 ℃. The method according to claim 1, wherein the clay soil is colored by adding wormwood, sesame or aloe juice, and charcoal powder to the ocher diluent. The method according to claim 1, wherein the heat treatment method uses far infrared rays or hot air. The ocher and water grass coated ocher cloth is attached to the surface of the particle board consisting of 33 to 45% by weight of pine needles, 10 to 18% by weight of charcoal powder having a particle size of 30 to 150 mesh, and 40 to 52% by weight of synthetic resin adhesive. Particle board with ocher cloth. The ocher cloth-attached particle board according to claim 4, wherein the synthetic resin adhesive is polymethyl methacrylate (PMMA) or unsaturated polyester resin. [5] The particle board according to claim 4, wherein the yellow clay cloth is naturally colored with mugwort juice, sesame juice or aloe juice, and charcoal powder.