KR101932004B1 - Method for manufacturing of wood panel for eco-friendly furniture and furniture using the same - Google Patents

Abstract

The present invention relates to a wood panel capable of manufacturing eco-friendly furniture and the manufacture of the eco-friendly furniture using the same. According to the present invention, a specific vegetable oil and an eco-friendly binder component penetrate into a wood panel manufactured by using a formaldehyde-based adhesive, and the remaining components after the penetration remain on the outer surface of the wood panel. Accordingly, internal inflow (penetration) of moisture and harmful substances can be prevented, and the release of the harmful substances from the wood panel to the outside can be avoided.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wood panel for eco-friendly furniture and a method for manufacturing eco-

The present invention relates to a wood panel capable of manufacturing eco-friendly furniture, and to the production of eco-friendly furniture using the same.

Demand for wood-based adhesive products such as wood, veneer, sawdust, fiberboard, bonded plywood, particleboard, and fiberboard is steadily increasing. These lumberboard products are not only mixed with harmful formaldehyde adhesives but also immersed in formalin for embalming treatment, and thus finished furniture or interior finishing materials are manufactured. However, since these wood panels are used as furniture or interior finishing materials without a post-process, large quantities of harmful substances such as toluene, xylene, and ethylbenzene are emitted, thereby causing various diseases such as skin diseases such as atopy and rhinitis do.

Wood coatings are also irrelevant to the emission of harmful substances. The varnish-based wood coatings were measured to release a large amount of harmful VOCs such as toluene, xylene, and ethylbenzene, while blocking the terpenes, which are natural VOCs of wood, The series releases 24 to 28% of the natural VOC of the wood itself, and the vegetable natural paint has been found to release about 18% of the natural VOC of wood, terpenes.

In order to solve this problem of releasing harmful substances, Korean Patent Laid-Open Publication No. 2011-0109613 discloses a panel which is coated with outer soil by mixing yellow soil and natural bond so as to block harmful substances. However, since it uses yellow soil, It is difficult to manufacture a panel of the present invention, and when an external impact is applied, there is a disadvantage that cracks are generated in the yellow soil or the relevant part is separated and the harmful substances are discharged.

To make up for the defects of wood-based building materials to reduce the emission of harmful VOCs (volatile organic compounds, volatile organic compounds) as eco-friendly furniture, it is necessary to eliminate the harmful substances emitted from the paint itself, There is a limit.

Accordingly, a problem to be solved by the present invention is to reduce the emission of harmful substances such as formaldehyde and total volatile organic compounds (TVOC) from the inexpensive wooden panels including MDF or PB, and at the same time to reduce the amount of formaldehyde and total volatile organic compounds TVOC), and to manufacture environmentally friendly furniture by using these wood panels.

In order to achieve the above object, the present invention provides a wood panel impregnated with a composition comprising a vegetable oil and a binder, wherein the vegetable oil is an oil extracted from plants, seeds of plants or trees, Wherein the binder is at least one selected from the group consisting of cottonseed oil, palm oil, coconut oil, castor oil, grape seed oil, jojoba oil, safflower oil, macadamia oil and olive oil, A bio-polyolefin resin, and a starch-derived polylactic acid, wherein the adhesive derived from the rice flour is obtained by mixing water and a polyvinyl alcohol resin in a rice flour and mixing the isocyanate compound with an isocyanate compound Characterized in that the aqueous solution is an aqueous solution It provides material panels.

According to one embodiment of the present invention, the adhesive derived from the rice flour has 1 to 5% by weight of the polyvinyl alcohol resin, 10 to 20% by weight of the rice flour, 10 to 40% by weight of the isocyanate compound, And the balance being water may be used.

According to another embodiment of the present invention, a flame retardant may further be included. As a concrete example, a flame retardant of water obtained by mixing ammonium phthalate, boric acid and ammonium hydroxide in a weight ratio of 1: 10: 1 to 10: 1 to 5 .

According to another aspect of the present invention, there is provided an eco-friendly furniture manufacturing method using a wood panel, wherein the eco-friendly furniture is used as the wood panel, the wood panel is coated with a two- And another wood panel are overlapped with each other in an odd number of layers and heated and pressed to produce an environmentally friendly furniture. The above-mentioned two-component adhesive includes 1 to 5% by weight of the polyvinyl alcohol resin, 10 to 20% By weight and 10 to 40% by weight of the isocyanate compound, and the balance being water.

The eco-friendly wood panel and eco-friendly furniture manufacturing method of the present invention have the following effects.

1. By penetrating into the inside of the wood panel manufactured using formaldehyde adhesive, specific vegetable oil and environment-friendly binder component and leaving the remaining components on the outer surface of the wood panel, (Penetration) can be prevented.

2. By injecting specific vegetable oil and environment-friendly binder components into the interior of the wood panel made with formaldehyde-based adhesive and leaving the remaining components on the outside of the wood panel, the formaldehyde Or toxic substances such as total organic compounds (TVOC) can be prevented from leaking to the outside.

3. By preventing these harmful substances from being discharged to the outside, it is possible to prevent the occurrence of diseases such as atopic or sick house syndrome.

The preferred embodiments of the present invention will be described in more detail.

First, the wood panel to be treated in the present invention is usually a product that can be obtained. For example, wood is generally processed into veneer, sawdust, fiber, bonded plywood, particle board, fiberboard, etc. Which contains a mixture of formaldehyde-based adhesives harmful to the human body. The wood panel may be washed with water or vegetable oil, if necessary, and subjected to a pre-treatment process in which hot air is dried at 45 to 55 ° C. Water or vegetable oil used for cleaning is used to clean fine dust on wood panel. Use of vegetable oil is preferable because harmful substances such as formaldehyde or total volatile organic compound (TVOC) And it is more preferable since it does not require a washing residual liquid removing step separately.

Examples of the vegetable oil include vegetable oils extracted from plants, seeds of plants, or trees, and may be used independently of one another to produce a vegetable oil such as urushiol oil, linseed oil, palm oil, coconut oil, castor oil, grape seed oil, jojoba oil, safflower oil, And olive oil. In consideration of atopic fouling and moisture-proofing properties, it may be preferable to use urushiol oil, linseed oil or palm oil. Some of the components of the vegetable oil may be contained in the form of a solid or an extract such as seed extract powder.

The wood panel is impregnated with a composition comprising a vegetable oil and a binder, wherein the vegetable oil is the same as described above, and the oil means an extractive stock solution. For example, it can be prepared as follows: white flour and leaves are washed, boiled for 7 hours at 100 ° C, and then evaporated by lowering the temperature, Can be extracted.

The binder may be at least one selected from the group consisting of a rice flour-based adhesive, a bio-polyolefin resin derived from sugarcane by-product, and a biodegradable resin including starch-derived polylactic acid.

The adhesive derived from rice flour can be used, for example, as a two-component adhesive liquid prepared by mixing an isocyanate compound with an aqueous solution of polyvinyl alcohol and water in rice flour. For example, the polyvinyl alcohol is contained in an amount of 1 to 5% by weight, the rice flour is 10 to 20% by weight, the isocyanate compound is contained in an amount of 10 to 40% by weight based on the total weight of the two- Effect and environment friendliness can be provided at the same time.

The above-mentioned adhesive derived from rice flour is preferably used because the cross-linking is formed between the hydroxyl group of the rice flour and the NCO group of the isocyanate compound by stirring the aqueous bicarbonate solution during the production to provide the basic skeleton of the adhesive, The adhesive strength can be further improved. The rice flour may be a fine particle type usually provided, for example, a sieve of about 100 mesh may be squeezed and hot-air dried.

In addition to the above-mentioned rice flour adhesive, the use of fine loam in the form of fine powder can increase the adhesive strength. When the rice flour adhesive includes long fibers selected from the group consisting of corn fiber, coconut fiber, palm fiber fiber, bamboo, reed, straw, cotton, hemp, wool, natural fiber, glass fiber, carbon fiber and nylon Due to the role of bridge, physical adhesion can be given.

Furthermore, it is preferable that the rice flour adhesive further comprises a biopolymer selected from the group consisting of a bio-polyolefin resin derived from sugarcane by-product and a polylactic acid derived from starch. The bio resin is not only an eco-friendly resin having biodegradability, . The rice flour adhesive and the bio-resin may be compounded at a weight ratio of 30:70 to 100: 0, a weight ratio of 35:65 to 90:10, or a weight ratio of 55:45 to 80:20, can do.

The bio-polyolefin resin may be a product available as a bio-polyethylene resin or a bio-polypropylene resin.

The vegetable oil and the binder may be used in a weight ratio of 1:99 to 99: 1. However, in consideration of the effect of immersing in the wood panel to externally discharge harmful substances and to prevent the influx from the outside, 10, or a weight ratio of 20:80 to 80:20.

The amount of the composition including the vegetable oil and the binder may be varied depending on the number and size of the wooden panels to be impregnated. For example, the amount of the composition including 1 to 100 L or 10 To 50 L, and the composition may contain 0.5 to 95% by weight of water, based on the weight of the vegetable oil, if necessary.

In this case, the impregnation treatment can be carried out once or repeatedly as many times as necessary, and the impregnation conditions are not particularly limited. However, if the impregnation is carried out at room temperature for 1 to 60 minutes or 10 to 35 minutes per one time, . Drying after the impregnation treatment can be carried out in a conventional manner, for example, air drying at room temperature.

The composition further includes a flame retardant to provide flame retardancy and flame retardancy required for furniture. The flame retardant may be, but is not limited to, a water flame retardant mixed with ammonium phosphate monobasic, boric acid and ammonium hydroxide in a weight ratio of 1: 10: 1 to 10: 1 to 5, 0.1 to 20% by weight, or 1 to 10% by weight is preferable in view of environmental friendliness, flame retardancy and flame retardant effect.

Further, the present invention may further include a finishing step of attaching a protective paper to the outer surface of the above-described joint workpiece, if necessary. Here, the finishing sheet can prevent scratches or the like from being generated on the outer surface of the wood panel when the wood panel is moved.

The resulting wood panel can be made of eco-friendly furniture using the above-mentioned two-component adhesive liquid when manufacturing furniture. As a concrete example of furniture production, after the above-mentioned two-component adhesive liquid is applied to a wood panel, the wood panel and another wood panel are overlapped with each other in an odd number of layers and heated and pressed to bond them together.

The above-mentioned eco-friendly furniture can be applied to a variety of substances known as environment-friendly paints. Further, wood panels such as MDF or PB are recycled as environmentally friendly wood panels and further environmentally friendly furniture. Formaldehyde, total volatile organic compounds It is possible to prevent harmful substances such as compounds from being discharged to the outside and to prevent harmful substances such as formaldehyde and total volatile organic compounds from entering into the wood panel from the outside.

That is, by penetrating the binder component that is environmentally friendly with the specific vegetable oil into the interior of the wood panel manufactured using the formaldehyde-based adhesive, the remaining components penetrate and remain on the outer surface of the wood panel, (Penetration) of the wood panel as well as preventing the discharge of harmful substances from the wood panel to the outside.

Hereinafter, the structure of the present invention will be described in detail with reference to the following examples, but the scope of the present invention is not limited to the following examples, but includes modifications of equivalent technical ideas.

Preparation Example 1: Preparation of Impregnating Composition 1

A commercially available natural urushiol oil and linseed oil were prepared as vegetable oils. As the adhesive derived from rice flour, 1 to 5% by weight of the polyvinyl alcohol, 10 to 20% by weight of the rice flour, 10 to 20% by weight of the isocyanate The compound is contained in an amount of 10 to 40% by weight, the water is mixed in the remaining amount, and then the binder A is prepared by stirring.

As the vegetable oil, natural urushiol oil and linseed oil were blended at a weight ratio of 1: 1, and then 80 parts by weight of the binder A and 20 parts by weight of the oil blend were mixed to prepare an impregnating treatment composition.

Preparation Example 2: Preparation of Impregnating Composition 2

A commercially available natural urushiol oil and linseed oil were prepared as vegetable oils. As the adhesive derived from rice flour, 1 to 5% by weight of the polyvinyl alcohol, 10 to 20% by weight of the rice flour, 10 to 20% by weight of the isocyanate (Bio-PE) derived from sugarcane by-product was added to the mixture at a weight ratio of 90:10 (a two-component adhesive liquid : Resin), and a binder B was prepared.

As the vegetable oil, natural urushiol oil and linseed oil were blended at a weight ratio of 1: 1, and then 20 parts by weight of the oil blend was mixed with 80 parts by weight of the binder B to prepare an impregnating treatment composition.

Example 1

Five MDF (1220 cm x 1440 cm x 15 mm) as wood panels were immersed in the impregnation treatment composition 1 prepared in advance through Production Example 1 at room temperature for 30 minutes. Formaldehyde emission and total volatile organic compound (TVOC) contents were measured before and after the impregnation treatment, and one of the impregnated wood panels was coated with a two-component adhesive solution prepared as binder A and then laminated to another wood panel And press bonded to each other. Then, the formaldehyde emission amount and the total volatile organic compound (TVOC) content were measured in the same manner for the bonded workpiece.

 As a result, the content of formaldehyde and total volatile organic compounds (TVOC) were significantly reduced after the impregnation treatment compared with that before the impregnation treatment, and the content of formaldehyde and total volatile organic compounds (TVOC) It can be confirmed that the reduction is greatly reduced.

Specifically, the TVOC emission amount after the impregnation treatment and the bonded workpiece is 72 ~ 136 ㎍ / m ² .h, and the TVOC emission amount (4,000 ㎍ / m ² .h) of the general building material set by the Ministry of Environment and the air cleaning association were satisfied all of the best grade standards of eco mark HB rating, toluene emission is passed through a 0.32-MOE reference 80㎍ / m ² .h in 49.5 ㎍ / m ² .h.

Comparative Example 1

The formaldehyde emission amount and the total volatile organic compound (TVOC) content were measured on the wood panel before the impregnation treatment in the Example 1, and then the two component wood adhesive panels prepared as the binder A And another piece of wood panel was laminated and heated and pressed to bond them to each other. Then, formaldehyde emission amount and total volatile organic compound (TVOC) content were measured in the same manner for the bonded workpiece.

Before impregnation was not satisfied with the best grade standards of Eco Mark HB rating performed in the Air Cleaning Association presented in Example 1 with respect to the wooden panel, toluene emission also MOE reference 80㎍ / m ² by the above .h And the amount of toluene emission was found to be lower than that of the Ministry of Environment even if an environmentally friendly binder was applied thereto. However, even if the environmentally friendly binder was applied thereto, Were not satisfied.

Example  2

The same procedure as in Example 1 was repeated except that the impregnating treatment composition 1 was replaced with the impregnating treatment composition 2 in Example 1. The formaldehyde emission amount and the total volatile organic compound (TVOC) were measured in the same manner as in Example 1, And the content thereof was measured.

 As a result, it was confirmed that the contents of formaldehyde and total volatile organic compounds (TVOC) were greatly reduced after the impregnation treatment compared to that before the impregnation treatment as in Example 1, and that the resultant bonded workpiece also had formaldehyde and total volatile organic compounds (TVOC) content were significantly reduced.

Specifically, the TVOC emission amount after the impregnation treatment and the bonded workpiece is 72 ~ 136 ㎍ / m ² .h, and the TVOC emission amount (4,000 ㎍ / m ² .h) of the general building material set by the Ministry of Environment and the air cleaning association were satisfied all of the best grade standards of eco mark HB rating, toluene emission is passed through a 0.32-MOE reference 80㎍ / m ² .h in 49.5 ㎍ / m ² .h.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, . Therefore, the embodiments described in the present invention are not intended to limit the scope of the present invention but to limit the scope of the present invention. The scope of protection of the present invention should be construed according to the claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (4)

A wood panel impregnated with a composition comprising vegetable oil and a binder,
The vegetable oil is an oil extracted from plants, seeds of plants or trees, and can be used independently of one another to produce a vegetable oil such as urushiol oil, linseed oil, palm oil, coconut oil, castor oil, grapeseed oil, jojoba oil, safflower oil, Olive oil, and olive oil.
Wherein the binder comprises a biodegradable resin selected from the group consisting of a bio-polyolefin resin derived from sugarcane by-product and a starch-derived polylactic acid,
Here, the adhesive derived from rice flour is a binary aqueous solution obtained by adding an isocyanate compound to an aqueous solution obtained by mixing water and a polyvinyl alcohol resin into rice flour,
The adhesive derived from the rice flour contains 1 to 5% by weight of the polyvinyl alcohol resin, 10 to 20% by weight of the rice flour, 10 to 40% by weight of the isocyanate compound, and the remaining amount is water, based on the total weight of the bicarbonate aqueous solution ,
The composition further comprises a flame retardant, wherein the flame retardant is a water flame retardant obtained by mixing ammonium phthalate, boric acid and ammonium hydroxide in a weight ratio of 1: 10: 1 to 10: 1 to 5,
Wherein the rice flour adhesive and the bio resin are blended in a weight ratio of 55:45 to 80:20 and the vegetable oil and the binder are blended in a weight ratio of 20:80 to 80:20. delete delete delete