KR101780931B1

KR101780931B1 - Manufacturing method of embossing wallpaper

Info

Publication number: KR101780931B1
Application number: KR1020160017084A
Authority: KR
Inventors: 남화성
Original assignee: 디자인벽지 주식회사; 남화성
Priority date: 2016-02-15
Filing date: 2016-02-15
Publication date: 2017-09-26
Also published as: KR20170095551A

Abstract

The present invention relates to a method for producing an embossed wallpaper.
A method of manufacturing an embossed wallpaper according to the present invention includes: a printing step of printing on a sheet of plain paper by gravure printing; An embossing step of forming an embossing so that an embossed groove is formed on a rear surface of the embossed paper by passing the embossed paper printed in the printing step between a pair of male and female mold rollers formed with male and female protrusions and recesses which are engaged with each other; A sol preparation step for producing a paste-like sol; A sol charging step of supplying the sol to the comma coater knife device to coat the sol on the rear surface of the embossed raw paper while cutting a portion other than the concave grooves on the back surface of the raw paper with a knife to fill the concave grooves with the concave grooves; And a drying step of passing the raw paper filled with the sol through the concave groove through a heat chamber.
According to the present invention, after the surface printing and embossing are performed, the soles are filled in the grooves on the rear surface of the back sheet where the back grooves are formed, and the excess is removed with a knife and then simply dried and molded to form recesses It is possible to minimize the change in the volume of the sol filled in the grooves and to maintain the flatness of the back surface of the wallpaper so that the adhesion to the wall surface can be facilitated and the non-foamable functional It is possible to overcome the color limit of the wallpaper surface due to the hue of the functional powder itself and to be contained in the wallpaper in a large amount due to the property filled in the grooves, thereby increasing the content of the functional ingredient, After the foaming process, it is shaved with the filling of the sol, then dried So that it is possible to solve the side effects caused by the residue due to the excessive application of the sol and to prevent the spreading phenomenon such as the depression after the application because the sol exists in a state where the recess is completely filled in the back groove .

Description

{Manufacturing method of embossing wallpaper}

The present invention relates to a method of manufacturing wallpaper, and more particularly, to a method of manufacturing an embossed wallpaper in which a surface embossed shape is formed, and then the embossed shape is well maintained without being recessed.

Wallpaper is an interior material which occupies considerable weight in interior decorations. Recently, a lot of embossed wallpaper which embossed the surface to provide a three-dimensional texture has been used.

A conventional method of manufacturing such an embossing wallpaper is to print a specific pattern or color on the surface of one sheet of paper by gravure printing method before pasting the two sheets of paper together and to paste the other sheet of paper through a pasted copper plate surface And then joined together with the printed rear side of the paper, subjected to a lapping process, passed between the male and female mold rollers provided with the irregularities, so that a specific pattern was formed on the surface and a convex recessed portion was formed on the rear side.

However, in the wallpaper produced in this manner, the grass component penetrated into the recessed portion of the rear surface during the glaze construction process, resulting in a depression phenomenon, which is expanded during the drying process after the wall surface is attached, There is a problem that the embossing is not smoothly formed and maintained.

As a technique for solving these problems, "Embossing wallpaper manufacturing method" (Korean Patent Registration No. 10-0616367, Patent Document 1) has been disclosed.

In Patent Document 1, the embossing is performed by passing a front sheet of paper through a printing process through a male and female mold rollers, and then a sol formed of a foaming agent or the like is applied to one surface of a back sheet to be joined to a back surface of a front sheet, Lt; / RTI >

At this time, in the step of applying the sol, the backside paper passes between the adhesive roller and the pressing roller, and the gravure is applied to one side of the backside paper. However, since a sufficient amount of the backside paper is difficult to be conveyed without flowing down, The residue of the sol is transferred to the embossing roller, which makes continuous and efficient production difficult.

In addition, since the back side of the back surface of the flat surface can not be filled with all of the other back side recessed portions formed by embossing, there is a problem that the effectiveness is not achieved.

On the other hand, as another technique, "embossing wallpaper and method for manufacturing the same" (Korean Patent Laid-Open No. 10-2004-0024099, Patent Document 2) discloses embossing a raw paper sheet and then applying a foaming resin to the rear side of the paper sheet, The backing paper was attached to the backside of the coated paper, and the paper was heated while passing through the heating chamber so that the foaming resin was foamed so that an external force was applied to prevent the protrusions of the embossing surface from sinking.

Patent Document 2 proposes that the empty space is filled by the volume expansion in the foaming step even if the space of the recessed portion is not completely filled up when the foamed resin is applied.

However, depending on the degree of filling of the space of the recessed portion, the foaming may be performed in excess of the imaginary flat surface of the rear surface of the rear surface of the front protruding portion, which simply forms the embossing, depending on the degree of filling of the foamed resin. There is a problem that flatness is not maintained and adhesion performance basically required for wallpaper is lowered.

That is, there is a problem that front / back separation occurs due to defective front and rear adhesion.

In addition, when the wall surface is attached, the smoothness is uneven, and the seam is not cleaned properly, resulting in a poor appearance of the aesthetic appearance.

Moreover, there is a problem that difficulty in maintaining the smoothness is caused by not necessarily joining two sheets.

In addition, there are many technologies of wallpaper which are excellent in far-infrared emissivity and eco-friendly loess, which are used as raw materials. These techniques are merely for coating the surface of the loess powder with the ingredients used in the wallpaper, In the case of these methods, the color of the functional component itself affects the color representation of the wallpaper, and the user can not implement the visual effect desired by the user.

KR 10-0616367 (2006.08.21) KR 10-20004-0024099 (March 20, 2004)

The method of manufacturing embossed wallpaper of the present invention is to solve the problems occurring in the related art as described above. The embossed wallpaper of the present invention is formed by embossing the surface of the embossed wallpaper, After removing by knife, it is formed by simple drying. By doing so, it is possible to minimize the volume change of the sol filled in the grooved groove without making the depression well after construction by the sol filled in the grooved groove, so that the flatness of the back surface of the wall is maintained, So that it can be done easily.

As a result, flatness is maintained even if only one sheet is used, thereby improving economy and productivity.

In addition, it is possible to overcome the color limit of the wallpaper surface due to the color of the functional powder itself and to fill the voids in the cavity due to the property of the non-foamable functional loess powder as a component of the sol filled in the grooves, So that the content of the functional ingredient can be increased.

In addition, after the filling of the sol, it is not a foaming step but a method in which the resin is shaved along with the filling of the sol and then dried while minimizing the volume change, so that the side effects due to the residue due to the excessive coating of the sol can be solved.

In addition, since there is a sol in the state that the back grooves are completely filled, it is intended to prevent the spreading phenomenon such as the depression after the construction.

In order to solve the above problems, a method of manufacturing embossed wallpaper according to the present invention includes a printing step of printing on a sheet of plain paper by gravure printing; An embossing step of forming an embossing so that an embossed groove is formed on a rear surface of the embossed paper by passing the embossed paper printed in the printing step between a pair of male and female mold rollers formed with male and female protrusions and recesses which are engaged with each other; A sol preparation step for producing a paste-like sol; A sol charging step of supplying the sol to the comma coater knife device to coat the sol on the rear surface of the embossed raw paper while cutting a portion other than the concave grooves on the back surface of the raw paper with a knife to fill the concave grooves with the concave grooves; And a drying step of passing the raw paper filled with the sol through the concave groove through a heat chamber.

According to another aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising the steps of: preparing a raw paper sheet and joining the raw paper sheet to the back surface of the raw paper sheet filled with the sol;

In the sol preparation step, 100 parts by weight of the functional powder, 70 to 80 parts by weight of the solid water-soluble resin and 100 to 70 parts by weight of the functional powder are mixed and stirred to 100 parts by weight of the functional powder, Is produced.

In addition, the functional powder is a non-expandable powder, and the functional powder is a loess powder.

According to the present invention, after the surface printing and embossing are performed, the soles are filled in the grooves on the rear surface of the back sheet where the back grooves are formed, and the excess is removed with a knife and then simply dried and molded to form recesses It is possible to minimize the change in the volume of the sol filled in the grooves and to maintain the flatness of the rear surface of the wallpaper so that the adhesion to the wall surface can be facilitated.

As a result, flatness can be maintained even if only one sheet is used, thereby improving the economical efficiency and productivity.

In addition, it is possible to overcome the color limit of the wallpaper surface due to the color of the functional powder itself and to fill the voids in the cavity due to the property of the non-foamable functional loess powder as a component of the sol filled in the grooves, It is possible to increase the content of the functional ingredient.

In addition, after the filling of the sol, not only the foaming process but also the shrinking is performed along with the filling of the sol, and the drying process is performed while minimizing the volume change, so that the side effects due to the residue due to the excessive coating of the sol can be solved.

In addition, because there is a sol in the state that the back grooves are completely filled, the expansion phenomenon such as depression after the construction does not occur.

In addition, compared with conventional wallpaper, the composition of the sol is non-foamable, so that the weight of the wallpaper is reduced, and a wall thickness thinner than the conventional wall paper can be manufactured.

1 is a process chart showing the process of Patent Document 1. Fig.
2 is a conceptual view showing an example of a manufacturing process of an embossed wallpaper of the present invention.
3 is a conceptual view showing still another example of the manufacturing process of the embossed wallpaper of the present invention.

Hereinafter, a method of manufacturing an embossed wallpaper according to the present invention will be described in detail with reference to the accompanying drawings.

The method for producing an embossed wallpaper of the present invention comprises a printing step, an embossing step, a sol forming step, a sol filling step, and a drying step.

1. Printing step

A variety of patterns and shapes are printed on the entire surface of the raw paper by printing using a common gravure printing method as shown in Figs.

At this time, it is preferable that the raw paper is made of natural pulp, so that it is possible to provide a harmless and environmentally friendly product to the human body.

The gravure printing is carried out by forming a concave groove in a roller or a copper plate, filling a concave groove with a printing composition such as ink, and then pressing the raw paper under pressure so as to form a concave groove on the path of the known paper 1 schematically shown in Fig. A pair of gravure printing rolls 2 are provided, and the surface of the paper 1 is processed by printing.

2. Embo formation step

As shown in FIGS. 2 and 3, through a pair of male and female forming rollers 3 formed with male and female protrusions and recesses which are engaged with each other, an embossed groove 4 is formed on the rear surface of the embroidery paper The emboss is formed as much as possible.

Although the concave groove 4 is shown in a rectangular shape for the sake of convenience, the concave groove 4 is not limited to this, and the concave groove 4 may have a curvature And the like.

3. Sol preparation step

A paste-like sol is prepared.

Here, it is preferable that the paste-like sol is composed of a non-foamable structure in order to minimize a change in the shape of the concave groove 4, rather than a sol which functions to expand the volume by foaming in the process of existing wallpaper.

Basically, a preferable composition is 100 parts by weight of a functional powder, 70 to 80 parts by weight of a water-soluble resin in a solid form, and 70 to 80 parts by weight of water, based on 100 parts by weight of the functional powder, .

The solid water-soluble resin may be composed of an acrylic resin or a polyester resin.

In particular, water-soluble acrylic resins provide environmentally friendly properties.

The functional powder may be composed of alumina powder having a high far infrared ray emissivity and porous property, char coal powder having excellent anion generation and deodorization performance, wood powder or diatomaceous earth to improve heat insulating performance, or the like.

Among the various functional powders, yellow loess has viscosity at a ratio of 1: 0.75 with water, and the acrylic resin dissolved in water exhibits adhesiveness. Therefore, when the paste has a strong tackiness among the paste-like solids, Even if the water evaporates, there is almost no change in the overall volume, and the pores are formed in the state that the moisture is released between the loess particles.

Therefore, in the present invention, it is preferable that the functional powder is composed of a porous powder such as loess, which is bonded with water to have tackiness and pores are formed when water is evaporated.

Unlike the conventional foamed sol, the thus constituted sol does not expand in volume but plays a role of maintaining its initial shape and not decreasing its volume after evaporation of water.

4. Stage charging stage

The sol is supplied to the comma coater knife device, and the sol is coated on the back surface of the embossed paper, while the portion other than the concave grooves on the rear surface of the paper is cut off using a knife to fill the concave groove with the sol.

The comma coater 5 is a device for coating the coating liquid on the surface of the plate-like material wound on the surface of the coating roll by supplying the coating liquid in the direction in which the coating roll rotates, as shown in the schematic diagram of FIG. 2. As shown in the registered patent 1105634 A comma coater for coating a coating liquid having a high viscosity is disclosed.

The sol filling step may be carried out by coating a sol on the back side of the embossed raw paper using the above-described sol as the coating liquid of the known comma coater, having a connection with a comma coater, So that the coated sol is cut off in addition to the recessed grooves on the rear side of the paper sheet, thereby filling only the concave groove with the sol.

5. Drying stage

The raw paper in which the sol is filled in the concave groove is dried by passing through the heat chamber 6 as shown in the schematic view in FIG.

When the sol is passed through the heat chamber in the state where the sol is filled with the sol, the sol is filled with the sol (10) in the concave groove as shown in the enlarged view of Fig. 2, The pores are formed by the evaporation of moisture in the yellow loess powder, and the adherent acrylic resin stays firmly adhered to the wall surface of the concave groove.

In addition, the rear surface remains flat as shown in the drawing.

In addition to these processes, a laminating process may be further performed.

Specifically, as shown in FIG. 3, a separate paper stock 7 for laminating is prepared and passed through a pair of adhesive rolls coated with an adhesive so that the back surface of the paper sheet, May be further performed between the sol charging step and the drying step.

In this case, functional powder such as yellow clay is completely trapped in the state of being filled in the concave groove, so that the functional powder charged by the impact applied from the outside in the state of being installed on the wall can be prevented from being broken down on the wall surface.

75 parts by weight of water-soluble acrylic resin, 75 parts by weight of water and 100 parts by weight of loess were mixed and stirred to prepare a paste-like sol.

In addition, as shown in FIG. 2, after a plain paper base paper is prepared, the paper is passed through a gravure printing roll to be printed in white, and then a pair of male and female rollers, The emboss is formed so as to form a concave groove on the rear surface of the raw paper by passing the printed raw paper, and the sol is coated with the coating liquid of the comma coater equipped with a knife, and the sol is coated on the rear surface of the raw paper through the embossed raw paper In addition to filling the grooves, the sol is filled only in the grooves by knife cutting.

Then, the embossed wallpaper was prepared by drying the raw paper through a heat chamber.

The same procedure as in Example 1 was carried out except that after preparing a paper for laminating paper of a separate sheet, a pair of rollers coated on the adhesive liquid were passed through and the adhesive liquid was applied to one side of the sheet, And then passed through a heat chamber to produce a padded embossing wallpaper.

[Experimental Example 1] Embo visual observation experiment

The wallpaper of Examples 1 and 2 and the commercially available foaming embossed laminate wallpaper were prepared as Comparative Example 1, pasted on a flat plate, adhered, and left in a container maintained at 35 ° C for 12 hours, and then their surfaces were compared and observed.

Experiments were performed by measuring the height from the bottom of the flat plate to the top at 50 front positions corresponding to the positions of the grooves and dividing by the average.

As a result, the wallpaper of Examples 1 and 2 was measured at 4.52 mm and 4.78 mm from the bottom of the flat plate, and the wallpaper of Comparative Example 1 was measured at 3.52 mm from the bottom of the flat plate.

As a result, it can be seen that the shape of the unevenness of the wallpaper produced by the manufacturing process of the present invention is maintained smoothly after the application compared with the existing embossed embossed wallpaper.

1: paper 2: gravure printing roll
3: Male and female form roller 4: Needle groove
5: Comma Coater 6: Thermal chamber
7: Laminating paper 8: Adhesive application roll
10: sol

Claims

In a method for producing wallpaper,
A printing step of printing on a front side of a sheet of paper by a gravure printing method;
An embossing step of forming an embossing so that an embossed groove is formed on a rear surface of the embossed paper by passing the embossed paper printed in the printing step between a pair of male and female mold rollers formed with male and female protrusions and recesses which are engaged with each other;
100 parts by weight of nonfoamed loess powder, 75 parts by weight of a water-soluble acrylic resin in solid form relative to 100 parts by weight of the loess powder, and 75 parts by weight of water relative to 100 parts by weight of the loess powder were mixed and stirred to prepare a paste- ;
A sol charging step of supplying the sol to the comma coater knife device to coat the sol on the rear surface of the embossed raw paper while cutting a portion other than the concave grooves on the back surface of the raw paper with a knife to fill the concave grooves with the concave grooves;
Preparing a separate raw paper sheet and joining it to the back surface of the raw paper filled with the sol;
And a drying step of passing the raw paper filled with the sol through the concave groove through a heat chamber,
Method of manufacturing embossed wallpaper.

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