KR100300092B1 - Interior plate boards for construction and its manufacturing method - Google Patents

Abstract

In the present invention, 70 to 85 parts by weight of waste pulp and 15 to 30 parts by weight of closed cotton are chopped by a cutter and powdered with a grinder, and then 5 to 10 weight of antimony trioxide in a solution in which 5 to 10 parts by weight of water is added to 10 to 20 parts by weight of acetic acid. The powder was dissolved in 10 to 15 parts by weight of white carbon, 3 to 7 parts by weight of ultrafine silica anhydrous silica, 10 to 15 parts by weight of vinyl acetate resin adhesive, and 800 to 850 parts by weight of water. After the mixing and kneading, and then through the first compression process and the first drying process, the moisture-proof resin solution is infiltrated, and then the second internal compression process, the second drying process is cut and molded to produce a building interior plate material and its manufacturing method In another aspect, the present invention is characterized by providing a building interior plate material excellent in flame retardancy, strength, sound insulation effect, heat resistance while preventing environmental pollution by recycling waste resources.

Description

Interior plate boards for construction and its manufacturing method

The present invention relates to a building interior plate and a method for manufacturing the same, more specifically, to reduce the environmental pollution by recycling waste pulp or waste fiber, and at the same time light weight and high strength compared to the conventional building interior plate, flame retardancy, weather resistance and; It relates to a building interior plate material excellent in moisture resistance and a manufacturing method thereof.

Building interior materials are used for ceilings, floors, interior walls, exterior walls, etc. Conventionally, building materials decorated with veneer or synthetic wood with veneer or painting are used. It was weak, not economical, and easily vibrated and damaged by external shocks. In addition, the use of natural wood is excellent in terms of quality, but in Korea, which is not rich in natural wood resources, it is not desirable for the national economy. Gypsum board is a dry material with excellent flame retardancy, but heavy and easy to break even in small impacts. Contains a problem that is harmful to the human body. On the other hand, internal materials such as cement, glass fiber, vermiculite, curing and curing with organic reinforcement materials, or by combining the raw materials with a binder such as an adhesive plate, partition plate, ceiling plate is also developed. However, they are generally excellent in heat resistance and good physical properties such as bearing strength and surface strength, but they are not economical because they do not meet the recent trend of lightweight construction materials and require a lot of manufacturing cost. In addition, building interior boards made of synthetic resins have been manufactured, but such interior boards have very high thermal expansion coefficients, which not only cause torsional phenomenon after construction, but also have a high degree of expansion, forming gaps at the joints and deformation due to heat. There is a problem.

On the other hand, as the interest in the environment has recently increased socially, and studies on how to recycle resources have been actively conducted, the number of patent applications related to the recycling of waste resources has increased. For example, Korean Patent Application No. 92-13401 (Application filed on July 27, 1992) discloses a method for manufacturing synthetic wood using waste resources. The manufacturing method according to the present invention uses waste resources to increase the utilization of resources and prevent environmental pollution. Although it has advantages, it is simply a process of crushing the sawdust and sawdust and bonding it with urea resin adhesive, followed by compression molding, so that the synthetic wood produced by the manufacturing method is not dense and used as a raw material. Because rice straw and sawdust are not superior in terms of thermoplastic and thermoforming, it is difficult to form a smooth outer surface. There is a problem that can be applied to applications such as.

Accordingly, the present inventors have completed the manufacturing method of the building interior plate material which can be applied to various economic and lightweight, low thermal deformation, excellent thermal formability by utilizing waste resources as a result of research and development to solve the conventional problems In Korea Patent Application No. 95-20835 (Applied on July 14, 1995, 'Manufacturing Method of Building Interior Panels'), super support fee composed of 50% waste pulp, 20% polyester fiber and 30% polypropylene fiber Evenly spray the homogenized raw material solution into the aqueous solution with the treatment concentration of 20-30g / l to form a plate by passing it on a long belt, and pass the interlocking rollers to squeeze the water first, and then to below the melting point of polypropylene. It is dried at the temperature so that the moisture content is 20% or less, and it is immersed in the wet thickener solution and passed through a drying drum maintained at a temperature of 180 to 200 ° C. by second compression with an interlocking roller. Key has bar from the start of the production process of the building to be built is made of plate material.

The plate material by the above manufacturing method has the advantage of being economical and excellent in strength and thermal formability, but in order to manufacture secondary molded products having various uneven patterns by applying the plate material, the thermosetting resin is cured and the formability of the plate is inferior. In order to prevent this, there is a disadvantage in that it must be cut within a short time after drying or compression molding after cutting.

Therefore, the inventors have developed a manufacturing method of building interior plate material which is excellent in strength and thermal formability, and can maximize product utilization and decorative effect through continuous research, and the patent No. 178461 (filed on July 7, 1996, 1998.11.23.Registered 'Manufacturing Method of Building Interior Panels') 2 ~ 9 super support fee consisting of waste pulp 30 ~ 55%, pepolyester fiber 20 ~ 35% and waste polypropylene fiber 20 ~ 35% Homogenate with% medical treatment and water to make super-support liquid, then dehydrated while transported to a long belt to form a plate, press-dehydrate by passing through interlocking rollers, and then wet-reinforced resin on the pressed and dewatered cardboard surface The solution is sprayed and dried at a temperature of 60 to 90 ° C. to obtain a water content of 5 to 20%, and then the dried cardboard is cut into a specific shape to wet the surface of the cut cardboard to a temperature of 180 to 200 ° C. Press at a pressure of 120 to 150kgf / ㎠ A method for manufacturing a sheet material comprising a step of building built type has been completed.

Building interior materials manufactured by the above manufacturing method is excellent in shape retention and workability including tensile strength and burst strength, and can be commercialized in various ways, and it has advantages such as economical and light weight, but polyester fiber or Polypropylene fiber is not preferable in terms of strength, durability, insulation and sound insulation effect of plate material because it has less bonding strength when mixing with waste paper powder, and it requires more energy when compression molding with press. There is a lot of consumption, there is a disadvantage that the interior plate is not uniform, as opposed to the purpose of preventing pollution due to unpleasant odor and smoke when discarded incineration.

Therefore, the present inventors secured flame retardancy and moisture resistance which were not expected in the above invention, and simplified the process and researched and developed a more economical manufacturing method by reducing energy consumption to prevent environmental pollution and at the same time lightweight, flame retardant, weather resistance, moisture resistance and The present invention has been completed by revealing a building material having excellent soundproofing effect and a manufacturing method thereof.

It is an object of the present invention to provide a building interior plate and a method of manufacturing the same to maximize the utilization of resources and prevent environmental pollution by utilizing waste pulp or waste surface.

It is still another object of the present invention to provide a waste newspaper, a waste box, a building lining using a closed surface, and a manufacturing method thereof, which are much more economical and easier to use than raw materials of a conventional building lining.

Another object of the present invention is to simplify the manufacturing process to provide a high quality building interior plate at a lower price.

Still another object of the present invention is to provide a built-in plate for building, which has excellent strength against external impact, in particular, a soundproofing effect against flame retardancy, insulation and noise, compared to conventional products.

The present invention also collects and recycles the waste of the interior board according to the present invention, which is discarded during building demolition and repair, to provide a building interior board that contributes to the reduction of construction waste, as well as resource saving and environmental pollution prevention. do.

1 is a process chart showing the manufacturing process of the building interior plate material according to the present invention.

Features of the present invention for achieving the above object are as follows.

In the manufacturing method of building interior materials,

70 to 85 parts by weight of waste pulp and 15 to 30 parts by weight of waste are chopped by a cutter and powdered with a grinder, and then 5 to 10 parts by weight of antimony trioxide is dissolved in a solution in which 5 to 10 parts by weight of water is added to 10 to 20 parts by weight of acetic acid. 10 to 15 parts by weight of white carbon, 3 to 7 parts by weight of ultrafine silica anhydrous silica, 10 to 15 parts by weight of vinyl acetate emulsion adhesive, and 800 to 850 parts by weight of water were added to the mixed solution to add the powdered mixture. After kneading the mixture, after passing through the first compression process and the first drying process, the moisture-proof resin solution is infiltrated, and then the second compression process and the second drying process are cut.

Waste pulp used in the present invention is a newspaper, magazine, paper or box used and discarded in homes, offices, public institutions, etc., and the waste cotton is a pure cotton that is discarded in each home or factory, and is endured in terms of strength, durability, and sound insulation. Preferred at

Referring to the manufacturing method of the building interior plate material according to the invention in detail as follows.

(1) powdering process

First, the waste surface is washed and then chopped by a cutter and powdered by a grinder. The waste pulp is chopped and powdered separately from the waste surface. At this time, the waste surface should be shredded into 4 ~ 7 × 4 ~ 7㎝ with a cutter, and then crushed into 0.1 ~ 0.2mm with a crusher, and then secondly regrinded to 0.1mm or less. It combines well with the particles to make the tissue compact, cohesive with other compositions, and also exists in the sheet, resulting in excellent tensile strength and durability, insulation and sound insulation.

(2) mixing process

The powdered waste pulp and waste surface are mixed with rotary blades in a mixing tank at a ratio of 70 to 85 parts by weight of waste pulp and 15 to 30 parts by weight of waste cotton.

(3) Raw material solution manufacturing process

10 to 20 parts by weight of acetic acid was dissolved in 5 to 10 parts by weight of antimony trioxide in a solution diluted with 5 to 10 parts by weight of water, and then 10 to 15 parts by weight of white carbon, 3 to 7 parts by weight of fine particulate anhydrous silica, and vinyl acetate resin adhesive 10 15 parts by weight are added, 800 to 850 parts by weight of water are mixed, and aged for about 2 hours. Here, antimony trioxide is used as a flame retardant, and the addition of antimony trioxide can be expected to maximize the flame retardancy of the interior plate material, white carbon is added to improve the quality of the interior plate material by increasing the binding capacity of the interior Insulation and sound insulation effect of the plate is improved and environmental pollution can be prevented because it is not harmful substance when incinerated.

In addition, ultra-fine particulate anhydrous silica is added to reinforce the particles and particles when mixing waste paper and cotton powder using the dispersibility of even particles of anhydrous silica. However, it is not a harmful substance when incinerated, and thus environmental pollution can be prevented.

In addition, vinyl acetate resin emulsion adhesive has no toxicity compared to other adhesives, and has strong adhesive strength with water-based materials to maximize the binding strength of waste paper powder, cotton powder and composition, thereby improving the tensile strength and quality of the interior plate material, and especially since it is a non-toxic adhesive, environmental pollution There is an advantage that can be prevented.

(4) kneading process

The waste pulp and waste surface powder mixture prepared in the powdering and mixing process are put into a kneader, and kneaded by adding the solution and dye prepared in the raw material solution manufacturing process. At this time, the time to knead depends on the capacity, 40 to 60 minutes by kneading kneader kneading so as not to bury in your hands.

The dye used at this time is to reproduce the harmony of the interior wall of the building according to the purpose of the interior plate. After dyeing 30-40g of 100g of the dough with the dye, the dough is dried and crushed to an appropriate size to prevent the dye from spreading. When kneading, mixing, putting it in a template, and compression molding with a press not only reproduces the texture of natural stone, such as granite, but also changes the color of the interior plate.

(5) 1st compression process

After quantitating the dough according to the standard weight, it is divided into two parts into a template, made into a flat surface, laid with a cotton cloth having a thickness of 0.3 to 0.4 mm, which is made of a perforated network, and then put into two equal parts of dough, at a pressure of 50 to 60 kgf / ㎠ Compress for 10-12 seconds. Through this process it is possible to increase the bonding strength of the components and the bearing capacity and strength of the interior plate. Here, the reason for covering the cotton fabric produced by the perforated net is that the drug is absorbed into the cotton cloth up and down to increase the adhesive strength and tensile strength.

(6) 1st drying process

The plate compressed through the first compression process is put in a tunnel type dryer and dried by hot air with hot air. At this time, the temperature is initially set at 27 to 30 ° C., and dried for about 10 to 12 hours so that the water content of the sheet is 15 to 20% in order to facilitate the next step.

The reason for limiting the temperature to the above range is that when the vapor temperature is above 30 ° C., vaporization occurs on the plate, and when the temperature is below 27 ° C., the drying time becomes longer.

(7) Moisture-proof resin solution spraying process

The moisture-resistant resin solution (fluorine-based BC 404) penetrates both sides of the plate while passing through the tunnel-type injector through the primary drying process.

(8) secondary compression process

The moisture absorbing solution is compressed into a plate for 12 to 15 seconds at a pressure of 120 to 150 kgf / cm 2 at a temperature of 80 to 100 ° C. This secondary compression process is a process of maximizing the binding force and tensile force of the component by compressing the plate absorbed moisture-proof solution.

(9) secondary drying process

The secondary drying process is a process of drying the compressed plate to put the plate material on the plate made of copper plate to prevent the material of the plate from expanding due to the increase in temperature, and cover the plate on the upper surface of the plate, then temperature 70 ~ 80 ℃ The process consists of drying in a tunnel dryer. At this time, the reason for the second drying at a higher temperature than the first drying is to ensure solidification by increasing the adhesive strength and tensile strength because the state is dried to some extent during the first drying.

(10) Cutting process

The dried board is surface treated and then cut and molded into products.

The temperature and pressure conditions in the compression process and the drying process described above have been found by the inventors of the present invention to find the optimum experimental conditions by the experiment. If the range is out of the above range, the desired strength, flame retardancy, and moisture resistance cannot be obtained. It cannot be molded into the desired shape.

Hereinafter, the present invention will be described in more detail with reference to Examples. However, the following examples are provided to illustrate preferred embodiments of the present invention and the scope of the present invention is not limited thereto.

EXAMPLE 1

80 g of pulp and 20 g of cotton fiber discarded in factories and homes are cut with a cutter, and then powdered into a grinder less than 0.1 mm and placed in a kneader. 5 g of water was diluted in 10 g of acetic acid, and 7 g of antimony trioxide was dissolved, and 12 g of white carbon, 5 g of ultrafine silica anhydrous silica, 12 g of vinyl acetate resin emulsion adhesive, and 800 g of water were added to prepare a raw material solution. Add to the mixture and knead. The cotton fabric made of perforated net is laid in the middle of the template, and the dough is divided into 2 parts. After pressing for 10 seconds with a pressure of 55kgf / ㎠, it is put in a container dryer and dried at 27 ° C. for 10 hours. After passing through the tunnel type injector, the moisture-proof resin solution was infiltrated and compressed for 15 seconds at a pressure of 120kgf / ㎠ at a temperature of 90 ° C. Then, the plate was placed on a plate made of copper plate and the copper plate was covered on the upper surface of the plate. It was dried using a dryer and then cut molded.

The thickness of the interior plate manufactured according to this embodiment was 12 mm, and the results of strength and flame retardancy test are shown in Table 1. EXAMPLE 2

75 g of pulp and 25 g of cotton fibers discarded in factories and homes are cut with a cutter, and then powdered to 0.1 mm or less with a grinder and placed in a kneader. 5 g of water was diluted in 10 g of acetic acid, followed by dissolving 9 g of antimony trioxide, 10 g of white carbon, 7 g of ultrafine silica anhydrous silica, 15 g of vinyl acetate resin emulsion adhesive, and 850 g of water were added to prepare a raw material solution. Add to the mixture and knead. The cotton fabric made of perforated net is laid in the middle of the template, put into two pieces of dough, and then pressed with a press at 60kgf / ㎠ pressure for 10 seconds, and then put in a container dryer and dried at 30 ° C. for 10 hours. After passing through the tunnel injector, the moisture-proof resin solution was infiltrated and compressed for 15 seconds at a pressure of 140kgf / ㎠ at a temperature of 90 ° C. The plate was then placed on a plate made of copper plate, and the copper plate was covered on the upper surface of the plate. It was dried using a dryer and then cut and molded.

The interior plate material produced according to the present embodiment is excellent in strength, flame retardancy and moisture resistance.

As described above, the building interior plate manufactured by the present invention is lighter and more economical than the conventional interior plate while at the same time recycling waste and preventing environmental pollution by using waste pulp and waste surface.

In particular, compared with the conventional products, there is an advantage of excellent flame retardancy, heat insulation and moisture resistance, strength.

In addition, since there is no harmful substance generated during incineration after use, pollution can be prevented, and the manufacturing process can be economically manufactured by simplifying the manufacturing process.

Claims (7)

70 to 85 parts by weight of waste pulp and 15 to 30 parts by weight of waste are chopped by a cutter and powdered with a grinder, and then 5 to 10 parts by weight of antimony trioxide is dissolved in a solution in which 5 to 10 parts by weight of water is added to 10 to 20 parts by weight of acetic acid. 10 to 15 parts by weight of white carbon, 3 to 7 parts by weight of ultrafine silica anhydrous silica, 10 to 15 parts by weight of vinyl acetate emulsion adhesive, and 800 to 850 parts by weight of water were added to the mixed solution to add the powdered mixture. After kneading the mixture, after the first compression process and the first drying process, the moisture-proof resin solution is infiltrated, and then the second compression process and the second drying process, the manufacturing method of the building interior material consisting of cutting. The method of claim 1, wherein the waste pulp is made of 55 to 60 parts by weight of lung species, 15 to 25 parts by weight of waste boxes. The method of claim 1, wherein the first compression step is to form a cotton cloth fabricated in a perforated net in the middle of the template, and put the mixed dough in two parts, and then compacted for 10 to 20 seconds at a pressure of 50 ~ 60kgf / ㎠ Method for manufacturing a building interior plate, characterized in that. The method of claim 1, wherein the primary drying step is the building material, characterized in that for drying the plate formed by the primary compression process in a hot air dryer so that the moisture content of 15 to 20% in a tunnel type dryer of 27 ~ 30 ℃ Method of manufacturing interior board. The method of claim 1, wherein the secondary compression step of the built-in plate for building, characterized in that for compressing the plate in which the moisture-proof resin solution infiltrated at a pressure of 120 ~ 150kgf / ㎠ at a temperature of 80 ~ 100 ℃ Manufacturing method. The method of claim 1, wherein the secondary drying step is to put the plate material compressed by the secondary compression step on the plate made of copper plate, cover the copper plate on the upper surface of the plate and then use a tunnel dryer at a temperature of 70 ~ 80 ℃ Method for manufacturing a building interior plate material comprising the process of drying by. 70 to 85 parts by weight of waste pulp and 15 to 30 parts by weight of waste are chopped by a cutter and powdered with a grinder, and then 5 to 10 parts by weight of antimony trioxide is dissolved in a solution in which 5 to 10 parts by weight of water is added to 10 to 20 parts by weight of acetic acid. 10 to 15 parts by weight of white carbon, 3 to 7 parts by weight of ultrafine silica anhydrous silica, 10 to 15 parts by weight of vinyl acetate emulsion adhesive, and 800 to 850 parts by weight of water were added to the mixed solution to add the powdered mixture. A building interior plate consisting of a mixture kneaded and then subjected to a first compression step and a first drying step, followed by penetration of a moisture proof resin solution, followed by a second compression step and a second drying step.