KR100478980B1 - board for construction and method of manufacturing thereof by using sludge generated from paper making - Google Patents

Abstract

Disclosed are a building interior material using a paper sludge and a method of manufacturing the same. The manufacturing method of building interior materials using paper sludge includes the steps of diluting paper sludge produced in the papermaking process with water to form paper sludge paste, and putting paper sludge paste into a mold having a predetermined shape, and compressing and dewatering the mold several times. Forming a plate of the, and evaporating the moisture contained in the plate comprises the step of drying. According to the building material using the paper sludge and the manufacturing method thereof, the waste paper sludge is molded to be used as a building material with excellent soundproofing, moisture proofing, and heat resistance, and can be recycled, thereby improving resource recycling and environmental pollution. Can be suppressed.

Description

Board for construction and method of manufacturing according by using sludge generated from paper making}

The present invention relates to a building interior material using a paper sludge and a manufacturing method thereof, and more particularly, to a building interior material using a paper sludge excellent in soundproofing, moisture-proof and heat insulation by recycling the paper sludge, and a manufacturing method thereof.

Along with industrial development, the collection and disposal of environmental pollutants generated in the production process of various industrial products has become a serious social problem.

In particular, the paper sludge generated during the production of papermaking is not able to be recycled in the papermaking process until now due to various problems such as clogging of felt or dewatering presses when re-input into the papermaking process. In most cases, it is disposed of by incineration or landfill, which is a serious problem of treatment costs and environmental pollution. In other words, harmful gases generated during incineration of paper sludge cause air pollution and contaminate water quality and soil during landfill.

Therefore, a method for reducing environmental pollution and increasing resource utilization by recycling paper sludge has been steadily required.

On the other hand, there are styrofoam, gypsum, plywood, etc. currently used for construction. Double styrofoam is a flammable material, there is a problem that emits a large amount of toxic gas harmful to the human body. In addition, styrofoam and gypsum board is difficult to recycle.

The present invention was devised to improve the above problems, taking advantage of the soundproofing, moisture proof and heat insulating properties of the paper sludge can replace the building interior materials currently used mainly, and the building interior materials using the recycled paper sludge and its manufacture The purpose is to provide a method.

Building interior material using the paper sludge according to the present invention to achieve the above object comprises the steps of forming a paper sludge paste based on the paper sludge generated in the paper making process; Inserting the papermaking sludge paste into a mold having a predetermined shape, and pressing and dehydrating a plurality of times to form a plate member having a predetermined shape; And evaporating and drying the moisture contained in the plate.

Preferably, the paper sludge paste is prepared by dissociating paper sludge in a predetermined solvent; And separating foreign matters contained in the dissociated paper sludge.

The method may further include adding a predetermined additive to the papermaking sludge from which the foreign matter is removed.

The additives include at least one of dyes, insect repellents, fragrances, and flame retardants.

In addition, the inner molding space of the mold is preferably formed to be curved correspondingly to have a plurality of bends in the shape of the paper sludge to be molded to increase the soundproofing ability.

In addition, the dried paper-making sludge cardboard further comprising the step of applying with a resin to have a plurality of through holes.

The method may further include attaching plywood or gypsum board as an adhesive to the dried papermaking sludge cardboard.

In addition, the building interior material using paper sludge for achieving the above object includes a plate produced through the manufacturing process.

In addition, plate material formed mainly of paper sludge; And a coating layer coated with resin so that a part of the plate is exposed to the outside of the plate.

Hereinafter, with reference to the accompanying drawings will be described in more detail the building interior material using a papermaking sludge according to a preferred embodiment of the present invention and its manufacturing method.

Figure 1 is a flow diagram showing a process for manufacturing interior materials using paper sludge according to the present invention.

Referring to the drawings, first, the paper sludge collected at the paper mill is dissociated (step 100).

The dissociation process is a process in which paper sludge is diluted with water to dissociate a pulp.

The dissociation process is carried out using a variety of known pulper devices used for dissociation in paper mills. Conventional pulper is structured to dissociate paper sludge mechanically by rotating the impeller with water and paper sludge injected into the reservoir. This pulper can be mixed in paper sludge in water to understand the underwater while minimizing the cutting of the fiber by mutual friction and tension between pulse fibers using the large speed difference between the center and left and right sides of the vortex formed by the rotation of the impeller. Dispersion is easily performed. This dissociation process causes the fibers to swell.

On the other hand, in the dissociation process of the general papermaking process, pulp, which is a papermaking aid for water, is added to the pulp at 10 to 15% for 15 to 20 minutes, whereas in the case of paper sludge, the fiber is subjected to the primary dissociation process of the papermaking process. Since the dispersion is in a state of some degree, the paper sludge has a water concentration of about 30%, and is put into the pulp for about 5 minutes.

Next, the foreign material of the paper sludge which has undergone the dissociation process is removed (step 110). The foreign material removal process is commonly called a selection process, and foreign materials such as sand and iron strips except pure fiber components in paper sludge and undissociated pulp are separated.

Foreign material removal can be applied in various ways.

As an example, there is a method of removing foreign matter through a screen net formed with a plurality of holes or slits to pass through the pure fiber component and to filter out material larger than the pure fiber component. Another alternative is to separate the foreign matter by specific gravity screening. The specific gravity screening method usually uses a centrifuge.

In addition, the foreign material removal process may be performed by a combination of specific gravity screening and size screening.

After the foreign material removal process, the beating process is performed (step 120).

The beating process refers to a process of forming an appropriate scratch on the fiber surface of papermaking sludge. Through this beating process, the surface area of the fiber is expanded and the fiber length is reduced. In general, the fibers form a inflexible cell wall (shell of the cell), and it is difficult to obtain sufficient adhesive force when the fibers are bonded while the cell wall is maintained as it is. In addition, most fibers are cylindrical and do not have a large adhesion area between the fibers. Therefore, by using a known beating machine, the fibers are rubbed with each other to destroy the cell walls of the fibers and crush them to be flexible, increase the surface area, and process the fibers with good adhesion. In confession, the fiber length is generally shortened.

Therefore, the paper sludge which has been subjected to the beating process increases physical strength such as rupture and compressive strength.

This beating process can be omitted. In other words, the paper sludge has a high proportion of short fibers by the beating process performed in the previous papermaking process, and is thickly formed by several centimeters for interior materials. The process can be omitted.

The process of mixing the additives that can supplement the properties required for the product to be manufactured into papermaking sludge that has undergone a blasting process is performed (step 130).

Additives may be applied dyes, flame retardants, antibacterial agents, fragrances.

In general, when the additive ratio of the papermaking sludge is viewed, the amount is added in a trace amount of about 0.05% of the dye, 0.1% of the antimicrobial agent, and about 0.3% of the flame retardant.

Paper-based flame retardants are variously known, such as aluminum hydroxide, antimony oxide, magnesium hydroxide, zinc stannate, phosphorus, guanidine-based, molybdate, zirconium. In addition, Taehwa Industrial Co., Ltd., a domestic flame retardant producer, is a flame retardant of the product name FR series, especially FR-1295 for papermaking.

Antibacterial agent may be applied to a variety of known materials, as an example may be applied to the inorganic silver antimicrobial agent "MCUT50" manufactured by Sumitomo Osaka Cement, Japan.

In addition, loess longevity obtained after dilution with water by diluting ocher, which has been recognized as excellent antibacterial property, may be added to the paper sludge as an antimicrobial agent. In the case of loess longevity, it is desirable to add less than 10%.

In addition, as an additive, various chemicals applied in the general papermaking process may be added. For example, there are rosin-based sizing agents extracted from wood, various neutral sizing agents obtained by pyrolyzing raw naphtha.

After the preparation process, it becomes a liquid forming paper sludge paste.

After the preparation process, the paper sludge is introduced into a molding mold corresponding to the shape of the interior material to be manufactured to form a predetermined thickness (step 140). What is necessary is just to form the board | plate material shape | molded to thickness of the numerical value calculated | required by the interior decoration standard.

In the case of apartment houses such as apartments, the sound absorbing property, that is, the soundproofing property, is required more strongly among the conditions that the interior materials for building need to meet privacy protection needs.

Accordingly, in consideration of this point, an inner molding space is formed in which a board 141 formed of paper sludge has a protrusion 141a, ie, embossed, as shown in FIG. Mold with a mold.

Paper sludge is mostly made of short fibers that are not well dehydrated, so it is desirable to mold the paper sludge forcibly by water dehydration and hydration.

In this forming process, it is preferable to use a molding press 40 as shown in FIG. 2 so that a large amount of water (about 90%) contained in the paper sludge can be effectively removed to 50% or less.

The illustrated molding press 40 forms a suction pipe 45 and a flow path connected to the bottom of the wire mesh press plate 43 on the bottom surface 41a of the lower frame 41 having an inner space corresponding to the shape of the plate to be manufactured. A plurality of suction holes 41b can be formed to suck moisture contained in the papermaking sludge to be molded into a suction device (not shown) connected to the suction pipe. In addition, the upper frame 51 also has a wire mesh press plate 52 provided at the bottom of the upper mold 51, and the suction pipe 55 is the frame (so that the suction of water to the upper portion through the gap between the wire mesh press plate 52) 51) It is installed inside. The suction pipe 55 is connected to a suction device (not shown).

Preferably, the first lower wire mesh press plate 43a and the first upper wire mesh press plate 52a which are opposed to each other among the upper and lower wire mesh press plates 43 and 52 are respectively the second lower wire mesh press plate 43b, The hole size is smaller than that of the second upper wire mesh press plate 52b. More preferably, the first lower wire mesh press plate 43a and the first upper wire mesh press plate 52a are formed to have 45 to 100 holes per square centimeter, and the second lower wire mesh press plate 43b and the second lower wire mesh press plate 52a are formed. The upper wire mesh press plate 52b is formed to have 20 to 45 holes per square centimeter.

The molding apparatus 40 is pressed several times, for example, three to five times to reduce the moisture contained in the paper sludge to a predetermined ratio or less and form a plate having a target thickness suitable for use as a plate. Preferably, a rotary type molding system is applied as shown in FIG. 3 so that several pressing and dehydration processes may be performed sequentially.

In the drawing, reference numeral 60 denotes an injector for injecting paper sludge that has undergone the treaty process into the lower mold of the molding apparatus, and reference numeral 70 denotes a vacuum suction of the formed sheet through a predetermined number of compression / dehydration processes and transported to the dryer 80. It is a conveyer. Such a molding system may be configured such that the upper frame is respectively positioned at the position where the compression / dehydration is performed, and the lower frame can be rotated by the rotary method shown. In addition, it is preferable to apply a method of increasing the compressive force as the number of times increases in order to suppress the damage and layer separation of the material during the compression dehydration.

After molding or after molding, it may be absorbed by spraying chemicals to improve the function of fragrance, insect repellent and other products. In this case, namely, when injecting the additive in the molding process, any one of the injectors indicated by reference numeral 60 of FIG. 3 may be applied for the additive injector.

The plate formed through the molding process removes moisture through a drying process (step 150). The drying method may be applied in various ways. Typically, the molded plate is dried by passing through a tunnel type dryer provided with a heating mechanism therein.

In the drying process, the moisture of the plate is lowered to 13 to 15%, which is the normal moisture content in air at room temperature.

Through such a drying process, it can be used as a building interior material.

In addition, of course, it can be used for various other uses. Such plates have the advantage of being recyclable.

Preferably, as shown in FIG. 5, the plate 142 manufactured through the molding process may be coated with a resin so as to increase the strength of the plate and suppress the occurrence of equity. The coated plate 250 shown in FIG. 5 is coated with a resin on the outside of the plate 142, and is formed to have a plurality of through holes 145 from the outside of the coating layer 251 to the plate 142. This opening allows the cardboard to contact external air. Resin may be applied to a variety of known materials such as polyvinyl-based, polyvinyl alcohol-based.

Alternatively, as shown in FIG. 6, another board 261, such as plywood or gypsum board, is formed on the plate 142 that has been dried to form a composite plate 260 attached with an adhesive 165.

As described so far, according to the building interior material using the paper sludge according to the present invention and a method for manufacturing the same, so as to form the waste paper sludge to be used as a building interior material excellent in soundproofing, moisture-proof, heat-resistant properties, recyclable By doing so, it is possible to suppress environmental pollution while improving resource recycling.

1 is a flow diagram illustrating a process for manufacturing interior materials using paper sludge according to a preferred embodiment of the present invention,

2 is a schematic cross-sectional view showing an example of a molding apparatus applied to the molding process of FIG.

3 is a view illustrating an example of a system in which the molding apparatuses of FIG. 1 are arranged;

Figure 4 is a perspective view showing an example of the paper sludge plate produced through the manufacturing process of Figure 1,

5 is a partially cut perspective view showing another example of the paper sludge plate material manufactured through the additional process of FIG.

6 is a cross-sectional view showing another example of a composite plate manufactured by the additional process of FIG.

<Description of the reference numerals for the main parts of the drawings>

40: molding press 60: injector

70: conveyor 80: dryer

141: molded plate 250: resin coated plate

260: composite plate

Claims (10)

delete delete delete delete delete Forming a paper sludge paste mainly containing paper sludge produced in the paper making process; The inner molding space is formed into a mold having a predetermined shape by inserting the paper sludge paste into a forming mold formed by bending the surface to have a plurality of bends so that the shape of the paper sludge to be formed can have a large number of bends. Making a step; And evaporating and drying the moisture contained in the plate. The manufacturing method of a building interior material using a papermaking sludge. Forming a paper sludge paste mainly containing paper sludge produced in the paper making process; Inserting the papermaking sludge paste into a mold having a predetermined shape, and pressing and dehydrating a plurality of times to form a plate member having a predetermined shape; Evaporating and drying the moisture contained in the plate; And applying a resin to the dried papermaking sludge plate to have a plurality of through holes. The method of claim 7, further comprising the step of attaching a plywood to the dried papermaking sludge plate as an attachment material. The method of claim 7, further comprising the step of attaching a gypsum board to the dried papermaking sludge plate as an attachment material. delete