KR101464346B1 - Method for manufacturing wall board - Google Patents

Abstract

The present invention relates to a method of manufacturing a wall board. According to the present invention, there is provided a method of manufacturing a multi-layer paper machine, comprising the steps of preparing a pulp stock and a paper stock, and supplying the pulp stock or the paper stock to each of the first to Nth head boxes included in the multi- Moving the first to Nth sheets in a stacked state while the first to Nth sheets are ejected from the first to Nth head boxes, respectively, and pressing the first to Nth sheets Wherein the first and the Nth head boxes are charged with the pulp stock material, the second and the (N-1) th head boxes are charged with the pulp stock material or the notional paper stock, And the third to the (N-2) th head boxes are charged with the waste paper.
According to the method of manufacturing a wall board, a wall board, which is a wallpaper board of a single sheet, can be manufactured, which can replace a conventional wallpaper and advantageous in that a separate laminating process using an adhesive is not necessary, . In addition, the use of high-priced pulp is minimized and high-grade paper can be used to achieve cost reduction.

Description

Method for manufacturing wall board "

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a wall board, and more particularly, to a method of manufacturing a wall board, which is a single sheet wallpaper board that can replace a wallpaper.

Wallpapers have been developed and used in Europe for the purpose of decorating walls or keeping warm with the development of paper making technology. By the end of the 18th century, wallpapers with repetitive patterns printed using wallpaper printing machines began to be manufactured. Due to the development of paper making and printing presses, wallpaper became closer to human life, .

Types of wallpaper include laminated wallpaper, silk wallpaper, and special wallpaper. Ridge wallpaper is the most commonly used. It prints various patterns on the paper made by laminating two sheets of white paper. It is eco-friendly in that it is cheap and uses pulp fiber. Silk wallpaper can be divided into PVC embossing wallpaper, foamed wallpaper and chemical tile wallpaper, which is coated with PVC on paper to soften texture. It has a high stain resistance and good printing property, but it has a drawback that it is expensive.

Some plasticizers used in PVC have recently been found to be harmful to the environment and human body, and the move to replace them is accelerating. In addition, since it is constructed in the widest residential area, there is a growing demand for functional wallpaper as well as interior role. Typically, flame retardancy, environment friendliness, stain resistance, hygroscopicity, and the like are required. If a wallet with a lower price than other building materials can have this functionality, this will make it easier for many people to enjoy a safe and comfortable living environment.

On the other hand, existing laminated wallpaper is produced by attaching two sheets of paper, and there is a disadvantage that a separate laminating process for bonding two sheets of paper is required and manufacturing cost increases. It is anticipated that the cost of wallpaper will be lowered if a single sheet is produced from a single plant in this kind of laminated wallpaper. However, we have not yet approached to produce a single sheet of wallpaper.

The technology of the background of the present invention is disclosed in Korean Patent Laid-Open Publication No. 2010-0095908 (published on September 01, 2010).

It is an object of the present invention to provide a method of manufacturing a wall board which can replace conventional wallpaper and reduce the production cost.

The present invention provides a method for producing pulp and paper, comprising the steps of preparing a pulp stock and a paper stock, loading each of the pulp stock or the paper stock into the first to Nth head boxes included in the multi-layer paper machine, Moving the first through Nth sheets in a stacked state while the first through Nth sheets are ejected from the first through Nth head boxes, respectively; and moving the first through Nth sheets by press- Wherein the first and the N head boxes are filled with the pulp stock material, the second and the N-1 head boxes are fed with the pulp stock material or the notional paper stock, And the third to the (N-2) th head boxes are charged with the high-value paper stock.

Here, the raw material of the pulp stock may be Bleached Kraft Pulp (BKP).

In addition, the raw material for the highland stock may include a waste paper bag or a paper bag waste paper.

The paper bag waste paper or bleached chemical pulp may be introduced into the second and the (N-1) th head boxes, and the packaging paper waste paper may be introduced into the third to (N-2) th head boxes.

The first to Nth head boxes may further include at least one of a wet strength agent, a dry strength agent, or an internal sizing agent.

The manufacturing method of the wall board may further include the step of putting a sizing agent on the surface of the wall board sheet and a step of coating the surface of the wall board sheet with a coating agent.

According to the method for manufacturing a wall board according to the present invention, it is possible to manufacture a wall board, which is a wallpaper board of a single sheet, so that it is possible to replace the existing wallpaper, and a separate laminating process using an adhesive is not required, There is an advantage to be able to. In addition, the use of high-priced pulp is minimized and high-grade paper can be used to achieve cost reduction.

1 is a flowchart of a method of manufacturing a wall board according to an embodiment of the present invention.
Fig. 2 is a conceptual diagram illustrating the manufacturing method of Fig. 1. Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

1 is a flowchart of a method of manufacturing a wall board according to an embodiment of the present invention. Fig. 2 is a conceptual diagram illustrating the manufacturing method of Fig. 1. Fig.

First, a pulp stock and a paper stock are prepared (S110). Bleached kraft pulp (BKP) corresponding to natural pulp may be used as a raw material of the pulp stock, but the present invention is not necessarily limited thereto.

The raw materials for the highland stocks may include waste paper bags or paperbacks. Typical examples of packaging materials are OCC (Old Corrugated Container) and process grip. Of course, the present invention is not necessarily limited thereto, and various other well-known notices may be used.

Preparations of pulp and wastepaper are made using the well-known method. For example, pulp stock requires processes such as dissociation of pulp raw material, selection line, and beating. Disposal of landfill materials requires processes such as dissociation, separation, dispersion, selection, deinking, dampening, washing, and concentration. The order of each process can be combined as needed.

After preparing the pulp stock and the paper stock, the pulp stock or the paper stock are charged into the first through Nth head boxes included in the multi-layer paper machine, respectively (S120).

Next, while the first to Nth sheets are ejected from the first to Nth head boxes, the first to Nth sheets are moved in a stacked manner (S130).

Hereinafter, steps S120 to S130 will be described in detail with reference to FIG. In this embodiment, the multi-layer paper machine corresponds to a known paper machine type, and its schematic configuration diagram is the same as that of FIG.

Fig. 2 shows an example of a multi-layer paper machine including the first to sixth head boxes 10, 20, 30, 40, 50 and 60 when N = 6. Of course, N may be a natural number of 5 or more, and in the present embodiment, N = 6 is exemplified.

The first through sixth sheets (1, 2, 3, 4, 5, 6) individually ejected from the respective head boxes 10, 20, 30, 40, 50, 60 are stacked on top of each other, . A conveying means such as a belt may be used for the conveying process.

Referring to the corresponding enlarged view of FIG. 2 after the first to sixth sheets of multilayer are once turned down by a plurality of belts or the like, the top layer in the total of six layers is the first head box 10 And the lowermost layer is the sixth sheet 6 that is ejected from the sixth head box 60. The sixth sheet 6 is the first sheet 1,

The following is an example in which the charge is applied to each headbox.

The pulp stock material is charged into the first and the Nth head boxes at the front end and the rear end among the N head boxes. When N = 6, the first and sixth head boxes 10 and 60 are fed with pulp stock. In this case, the first sheet 1 and the second sheet 6 are made of pulp stock. This is to form the top and bottom layers of natural pulp to maintain aesthetics and to impart water resistance.

Further, the pulp stock material or the notional stock material is put into the second and the (N-1) th head boxes. For example, the second and fifth head boxes 20 and 50 are fed with waste paper. In this case, the second and fifth sheets (2, 5) are composed of paperback paper waste paper. The abolition of paperback paper has an effect of further complementing the surface aesthetics. Of course, the second and fifth sheets 2, 5 may be made of pulp.

Next, the third to the (N-2) th head boxes are loaded with the notice paper stock. For example, the third and fourth head boxes 30 and 40 are fed with a packaging material waste paper (ex. OCC). In this case, the third and fourth sheets (3, 4) are composed of a package waste paper. Packaging waste paper serves to complement strength and basis weight.

As described above, in the case of the present embodiment, the uppermost layer and the lowermost layer of the multi-layered sheets produced by the multi-layer paper machine are realized as pulp, and the immediately inner layer is realized as a high-grade paper or pulp. Again, the inner layers of the layers embodied in highland or pulp are all embodied in high ground.

In the raw material processing and the papermaking process, at least one of the wetting strength agent, the drying agent strength enhancer, and the internal sizing agent may be further added to each of the first to Nth head boxes. Such wet or dry strength agent enhances the strength of the wall board. In addition, the internal sizing agent serves to impart water resistance to the wall board.

Here, the wet strength agent may be epoxy-based, urea-based or the like, and the dry strength agent may be a positive starch, a polyacrylamide-based, or the like. As the internal sizing agent, reinforcing rosin, rosin emulsion, Alum etc. can be used.

In the case of the pulp stock, 1 to 10 wt% is added to the weight of the unfolded stock, and 1 to 10 wt% of the wollastonite is added to the wollastonite. . The internal sizing agent may be added in an amount of 1 to 10 wt% based on the weight of the pulp stock in the case of the pulp stock, and 1 to 10 wt% in the case of the high-priced stock. Alum can be used in the amount of 1 ~ 5 wt%.

After the step S130, the moved first to Nth sheets are press-pressed to produce a single wall board sheet (S140). That is, as shown in FIG. 2, the first to sixth sheets, which are vertically stacked and moved, are pressed by the press 70, whereby a single wall board sheet is manufactured.

As described above, the wall board sheet according to the embodiment of the present invention does not require a separate laminating process using an adhesive as in the conventional laminate wallpaper, so that the production cost can be reduced, and it is realized as a single type wallpaper board Accordingly, it is possible to replace the existing laminated wallpaper. In addition, since the use of high-priced pulp is minimized and the paper is used, it is possible to reduce the cost remarkably and there is an advantage of being eco-friendly.

After step S140, the press-bonded wall board sheet is dewatered and dried. Then, a sizing process and a coating process are performed on the surface of the wall board sheet (S150).

In the case of the sizing treatment, sizing agents such as SAE, SA, oxidized starch and the like are put into the surface of the wall board sheet and then carried out. This sizing agent is added only at a predetermined ratio to the surface layer.

The surface is coated with a separate coating agent. As the coating agent, a pigment, a latex and an additive may be mixed and used. The additive functions as a function of the wall board sheet, and for example, a drug for flame retardant addition can be used.

The wall board sheet manufactured as described above includes first to sixth sheet layers, and a coating layer coated on the first sheet layer. 5 to 7 wt%, first sheet layer: 12 to 15 wt%, second sheet layer: 14 to 15 wt%, third sheet layer: 14 to 16 wt%, in comparison with the total weight of the wall board sheet 14 to 16 wt% of the fourth sheet layer, 14 to 15 wt% of the fifth sheet layer, and 18 to 20 wt% of the sixth sheet layer.

According to the present invention, a single eco-friendly wall board can be manufactured using a multi-layer production process, and existing wallpaper can be substituted. In addition, it is possible to lower the price of wallpaper by expanding the wallpaper with high recycled fiber ratio, to enlarge the use of wallpaper, and to reduce the environmental and human harmless wallpaper products at a low cost.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10 to 60: first to sixth head boxes 1 to 6: first to sixth sheets
70: Press

Claims (6)

Preparing pulp stock consisting of bleached chemical pulp (BKP), and waste paper waste composed of paper waste paper or paper waste paper;
Each of the first to sixth headboxes included in the multi-layer paper machine being charged with one of the pulp stock or the high cost stock;
Moving the first to sixth sheets in a stacked form while the first to sixth sheets are respectively ejected from the first to sixth head boxes; And
Press-bonding the moved first to sixth sheets to produce a single wall board sheet,
Wherein the first and sixth head boxes are fed with pulp stock made of the bleached chemical pulp, and the second and fifth head boxes are fed with a paper stock consisting of the paperback paper waste paper, and in the third to fourth head boxes, A method of manufacturing a wall board into which a high-quality paper stock made of waste paper is put. delete delete delete The method according to claim 1,
Wherein at least one of a wet strength agent, a dry strength agent, and an internal sizing agent is further added to the first to sixth head boxes. The method according to claim 1,
Applying a sizing agent to the surface of the wall board sheet; And
And coating the surface of the wall board sheet with a coating agent.

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