KR100781344B1 - Air-permeable Wallpaper Laminated with Polyethylene Films and Method Thereof - Google Patents

Abstract

In the present invention, a film layer mainly formed of a polymer selected from low density polyethylene, thermoplastic urethane (TPU), ethylene vinyl acetate (EVA), polypropylene (PP), or a mixture thereof is formed between the base paper layers. A breathable wallpaper having a plurality of perforations through the layers and a method of making the same are described.

The breathable wallpaper manufactured according to the present invention can not only reduce the cost compared to the wallpaper using a conventional adhesive or the like, but also greatly improves the curability and breathability, and can prevent the embossing of the wallpaper from being recessed.

Wallpaper, Breathable, Polyethylene, Thermoplastic Polyurethane (TPU), EVA, PP

Description

Air-permeable Wallpaper Laminated with Polyethylene Films and Method Thereof}

1A-1B are cross-sectional views of conventional embossed wallpaper, respectively;

2 is a cross-sectional view of a general breathable wallpaper made according to one preferred embodiment of the present invention;

3A and 3B are cross-sectional views of embossed breathable wallpaper, respectively, prepared according to another preferred embodiment of the present invention;

4A-4B are cross-sectional views of embossed breathable wallpaper, respectively, prepared according to another preferred embodiment of the present invention;

5 is a flowchart illustrating a manufacturing process of a breathable wallpaper in which a film layer based on low density polyethylene or the like is laminated between base paper layers according to a preferred embodiment of the present invention;

FIG. 6 is a flowchart illustrating a manufacturing process of a breathable wallpaper in which each base paper is fused to a film based on low density polyethylene or the like through independent steps according to another preferred embodiment of the present invention; FIG.

7 is a schematic structural diagram of an apparatus for manufacturing the breathable wallpaper of the present invention;

8 is a schematic configuration diagram of a pin roller as a puncturing means for imparting breathability to a wallpaper according to the present invention;

<Description of the symbols for the main parts of the drawings>

200, 300, 400: wallpaper 210, 310, 410, 710: first base layer

220, 320, 420, 720: Second base layer 230, 330, 430: Film layer

240, 340, 440: printed layer 342, 442: embossing

250, 350, 360, 450, 460, 470: perforated

700: T die 702: Polymer supply part

704 extruder 750 printing unit

760: drilling part 762: pin roller

766: press roller 770: embossing processing unit

802, 804, 806, 808: Roller

The present invention relates to wallpaper, and more particularly, to a wallpaper in which a polyethylene film is laminated between base paper layers and a method for producing the same.

In general, wallpaper refers to paper that protects the wall surface and papers for interior decoration. Such wallpaper can be classified into a general wallpaper printed only on one surface of the paper, which is wallpaper paper, and an embossed wallpaper in which a protruding pattern of a predetermined shape, that is, embossing is formed, together with the pattern on the paper. The embossed wallpaper is usually embossed by applying an adhesive to one of the upper and lower limbs and laminating the base paper to produce a bonding paper, then printing the color and pattern on the surface of the upper paper and passing the bonding paper through an embossed roller having irregularities. Formed by forming a pattern, a brief look at the configuration of the conventional embossed wallpaper as follows.

FIG. 1A is a schematic cross-sectional view of an embossed wallpaper manufactured by a conventional method, and as shown, the conventional embossed wallpaper 1 is directed to the back side of the upper limb 10 having a print layer 12 and an embossed pattern 14 formed thereon. The base 20, which is not formed in any shape, is bonded through the adhesive layer 30. In this case, the upper limbs 10 and the lower limbs 20 are excellent in bonding strength because the whole is in close contact with the adhesive layer 30, but due to the formation of the embossed pattern 14, the wallpaper including the lower limbs 20 ( 1) The entire back surface has a recessed surface 16 corresponding to the embossed pattern 14. Accordingly, if you want to paste on the back of the lower limb 20 to the wall to rub the surface of the upper limb 10 using a tool such as a towel or a broom, the paste of the paste applied to the bottom of the lower limb 20 As the embossing 14 stretched due to moisture or the like is pressed toward the indentation surface 16, the embossing 14 is depressed and is damaged while maintaining its shape. In addition, since the recessed surface 16 of the lower leg 20 is not in close contact with the wall, there is a problem that the embossed wallpaper 1 is lifted from the wall as a whole due to the decrease in adhesion to the wall.

In order to solve such a problem, an embossed wallpaper manufactured by forming a printing layer and an embossed pattern on the surface of the upper limb before applying the upper and lower limbs with an adhesive has been proposed. Figure 1b is a cross-sectional view of the embossed wallpaper produced by such a prior art. In order to manufacture the embossed wallpaper 1 shown in FIG. 1B, first, a printing layer 12 is formed on the upper limb 10, and the printing layer 12 is formed by using an embossing roll having continuous protrusions on the outer circumferential surface thereof. Passing the upper limb 10 forms an embossing 14. Subsequently, the upper layer on which the print layer 12 and the embossing 14 are formed is laminated with the lower limb 20 on which the adhesive bond 30 is applied.

In the case of the embossed wallpaper 1 shown in FIG. 1B, since the back surface of the base 20 directly attached to the wall is completely adhered to the wall surface, the adhesion to the wall surface is improved compared to the wallpaper shown in FIG. 1A. However, in this case, an empty space 18 is formed between the concave surface 16 formed on the rear surface of the upper limb 10 and the adhesive layer 30 corresponding to the embossed pattern 14 protruding upward, thereby forming the upper limb 10 and the upper limb 10. Since the adhesive bond layer 30 does not fully adhere, the bonding force of the upper limb 10 and the lower leg 20 falls large. Therefore, the upper limb 10 may be detached from the lower limb 20 and the upper limb 10 may float from the wall surface. Also, in this case, the empty space 18 between the concave surface 16 and the adhesive layer 30 is usually filled with air, and a towel or other tool is used to spread the laminated embossed wallpaper 1 on the wall. Rubbing the surface of the upper limb 10 on which the embossing 14 is formed has a problem that the depression or damage of the embossing 14 cannot be prevented.

In order to remedy these problems, a method of filling the gap between the concave surface 16 and the adhesive layer 30 of the upper limb 10 on which the embossing 14 is formed has been proposed. For example, Republic of Korea Utility Model Publication No. 298504 proposes an embossed wallpaper formed by forming a foamed resin layer between the embossed upper limb and the lower limb attached to the wall, the foamed resin layer completely fills the recessed surface. According to the above utility model, the filling between the upper and lower limbs with an elastic foam layer indicates that it can be restored even if the embossing is temporarily depressed during the wall coating process. However, the foamed resin is more expensive than the adhesive, and in the manufacturing process, it is not preferable in view of the efficiency of the manufacturing process because the foamed resin should be applied to the rear surface of the upper paper where the embossing is formed. In addition, since it is almost impossible to uniformly apply the expandable resin to the base paper layer, there is no problem in physical properties and stability in producing the manufactured wallpaper.

On the other hand, the Republic of Korea Utility Model Publication No. 354825 is composed of the upper layer of the three layers of the "first paper-adhesive layer-second paper", not the single layer embossed pattern formed between the indentation surface and the lower layer of the upper layer It is related with the embossed wallpaper which apply | coated and laminated | stacked the foam adhesive. However, the wallpaper proposed by the Utility Model Publication has a problem in the efficiency and economic efficiency of the process because the manufacturing process is too complicated.

In other words, the embossed wallpaper using the above-mentioned expandable resin has a problem in stabilization during the production of the wallpaper due to technical limitations in that the resin cannot be uniformly foamed on the base layer. When the paper shrinks due to leaking moisture, the wallpaper and the wallpaper are opened. In particular, it is left in the vinyl folded for a certain period of time (2 to 48 hours) after papering using a paper paste. Since the paper is not elastic, the marks generated in this process are not lost.

In order to solve this problem, the present inventor has applied for a wallpaper having a film layer made of low density polyethylene as a raw material between the base paper layers in Patent 2005-43050. However, according to the patent application, due to the film layer laminated between the base layer, the moisture generated by the leakage from the wall surface after passing through the base layer, it is prevented from being discharged to the upper layer, the base layer contains a large amount of water It may cause corrosion of the underlayer and peeling after plating.

The present invention has been proposed to solve the above problems, an object of the present invention is to prevent the peeling of the wallpaper caused by the moisture generated from the wall in advance, as well as microorganisms that inhabit the wall due to moisture, It is to provide a wallpaper and a method of manufacturing the same that can prevent the wallpaper from corrosion by the action of bacteria and the like.

Another object of the present invention is to provide a wallpaper and a method of manufacturing the same having a strength that can maintain the embossed form even in a humid environment and at the same time reduce the cost.

Other objects and advantages of the present invention will become more apparent from the accompanying drawings and the accompanying drawings.

For the above purpose, according to one aspect of the present invention; A second base layer formed on the back surface of the first base layer; A film layer laminated between the first base layer and the second base layer, the film layer mainly containing a polymer selected from low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof; To provide a breathable wallpaper comprising a plurality of perforations penetrating at least the film layer.

According to a preferred embodiment of the present invention, the film layer may be composed of a mixture of low density polyethylene, linear low density polyethylene, polypropylene or a polymer selected from 70 to 99.9% by weight, and a high density polyethylene of 0.1 to 30% by weight.

Particularly, in a preferred embodiment of the present invention, an embossed wallpaper in which a print layer and an embossing are formed on the first base layer, wherein the film layer is configured to fill both the first base layer and the second base layer, A second film layer mainly composed of low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof, and a back surface of the second film layer; It may further include a third base layer.

On the other hand, according to another aspect of the invention a) melting a polymer based on a material selected from a low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof; b) laminating the molten polymer between a first base paper and a second base paper; c) it provides a method for producing a breathable wallpaper comprising the step of forming a perforation in the laminated polymer.

At this time, the step of forming a printing layer on top of the first paper between the step b) and c), and after the step c) forming an embossing on top of the first paper on which the printing layer is formed It may further include, after the step of forming the embossing, the low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or between the printing layer, the perforated and embossed formed paper and the third base paper Stacking a second film layer between the second base paper and the third base paper by inputting a molten polymer having these mixtures as a main ingredient; and forming a perforation in the second film layer and the third base paper. In addition, it is possible to manufacture a breathable wallpaper with improved adhesion to the wall surface.

On the other hand, according to a preferred aspect of the present invention, a) melting a low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymer based on these mixtures; b) fusing the molten polymer on one surface of the first raw paper; c) forming perforations in the polymer; d) there is also provided a method for producing a breathable wallpaper comprising the step of pressing and fusion of the polymer fused to one surface of the first sheet of paper.

As used herein, the term "low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or mixtures thereof" refers to low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene. , Or means that the content of the polymeric material selected from these mixtures accounts for the most part, such as low density polyethylene, linear low density polyethylene, thermoplastic polyurethanes, ethylenevinylacetate, poly in molten polymeric materials and films made therefrom according to the invention. It means that the content of propylene, or mixtures thereof, is at least 50%, preferably at least 70% in the total composition. Thus, the term 'low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or mixtures thereof' is used herein to refer to low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, Used to mean polypropylene, or materials and films composed only of these mixtures. That is, according to the present invention, the above-described polymer materials are singly or mixed to be laminated as a film layer between base paper layers, and when used in combination, these polymer materials may be used by mixing two or more or three or more. The components may be mixed in a proportion of approximately 10 to 90% by weight, preferably 20 to 80% by weight.

EMBODIMENT OF THE INVENTION Hereinafter, with reference to attached drawing, preferable structure of this invention is demonstrated in detail.

2 is a cross-sectional view of a wallpaper in which a film based on low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof is laminated between base paper layers according to a preferred embodiment of the present invention. It shows a normal wallpaper not embossed on the base layer. As shown, the wallpaper 200 according to the present embodiment is spaced apart from the back surface of the first base layer 210 and the first base layer 210 forming the printed layer 240 of various patterns on the surface. And a film layer 230 laminated between a bottom surface of the first base layer 210 and an upper surface of the second base layer 220, the bottom of which is attached to the wall. And a plurality of perforations 250 penetrating at least the upper print layer 240, the first paper layer 210, and the film layer 230.

The film layer 230 according to the present invention is low density polyethylene (Low Density Polyethylene, LDPE), linear low density polyethylene (Linear Low Density Polyethylene, LLDPE), Thermoplastic Polyurethane (Thermal Plastic Urethane, TPU), ethylene vinyl acetate (EVA) , Polypropylene (PP), or a mixture of these mixtures, which is laminated between the base layers through thermal fusion, especially when a mixture of LDPE, LLDPE and LDPE-LLDPE is used as the main material. , HDPE).

The low density polyethylene, the linear low density polyethylene, the thermoplastic polyurethane, the ethylene vinyl acetate, the polypropylene or the mixture thereof constituting the film layer 230 according to the present invention have excellent impact strength, flexibility, film transparency, in particular, tensile and shrinkage, Since it is possible to greatly reduce the amount of the base paper constituting, it is possible to reduce the cost compared to the adhesive that was conventionally used for laminating the upper and lower limbs. In addition, although the adhesive used for laminating the base paper layer in the manufacturing process of the conventional wallpaper contains a large amount of harmful components to the human body, in the present invention, since such an adhesive is not used at all, it is preferable in that it is environment-friendly.

At this time, the film layer 230 according to the present invention is a low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymer containing 50% by weight, preferably 70% by weight or more of these mixtures It is laminated between the base layer through the heat fusion-cooling process. Particularly, in the case of using LDPE, LLDPE, or a mixture thereof as a main material, the first base layer 210 is formed through a heat fusion process from a polymer composition containing 30% by weight or less of high-density polyethylene to promote curing of the film. And a second base layer 220. That is, as the material of the film layer 230 according to the present invention, the content of low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof is 50% by weight, preferably 70% by weight. When not mixed with other resins, it is difficult to control the heat treatment process described below, that is, the heat fusion process, as well as its effectiveness as a wallpaper due to poor adhesion to the base layer of the produced film and uneven adhesion. This falls drastically.

In particular, according to the present invention, the above-described low density polyethylene, linear low density polyethylene, and mixtures thereof may additionally contain the high density polyethylene to promote the curability of the film layer. In this case, the high density polyethylene may be used in the entire resin composition. It is preferable to mix | blend so that it may not exceed 30 weight%. If the content of the high-density polyethylene exceeds this, there is a fear that physical properties such as shrinkage force, tensile force.

Meanwhile, according to the present exemplary embodiment, the plurality of perforations 250 penetrate at least a part of the wallpaper 200 to impart air permeability to the wallpaper on which the film layer 230 is formed. In the present invention, the low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof, melted at high temperature while supplying the first base layer 210 and the second base layer 220 After the polymer is thermally fused between the base layers, the film layers 230 are laminated and laminated to the 'first base layer 210-film layer 230-second base layer 220', and then the first base layer ( A printed layer is formed on the upper surface, and a plurality of perforations 250 are formed through the lamination through a perforation means such as a pin roll or a laser. FIG. 2 illustrates that a plurality of perforations 250 are printed layers 240 when the punching means applies a predetermined pressure or strength in a direction in which the first paper layer 210 or the print layer 240 is formed in the process of slowly transferring the paper. It is formed on the side, the perforation 252 is formed in the upper printing layer 240 to penetrate all of the lower second printing layer 220 in accordance with the pressure or strength, or the lower second paper layer 220 through If not, a perforation 254 penetrating from the print layer 240 to the film layer 350 may be formed. In relation to the purpose of the present invention, the perforation 250 must penetrate the film layer 230 which is a polymeric material.

If the puncturing means exerts a predetermined pressure or strength in the direction of the second printed layer 220 formed under the wallpaper 200, the plurality of penetrating means essentially penetrates the second printed layer 220 and the film layer 230. Of course, a perforation can be formed.

Meanwhile, in addition to the general wallpaper described above, an embossed wallpaper having a continuous embossed pattern formed on the base paper layer may be manufactured according to the present invention. FIG. 3A is a cross-sectional view of an embossed wallpaper manufactured according to an embodiment of the present invention. The embossed wallpaper 300 according to the present embodiment is formed on the back surface of the first base layer 310 and the first base layer 310, the printing layer 340 and the continuous embossed pattern 342 is formed on the top And a heat treatment process between the second paper layer 320 and the first paper layer 310 and the second paper layer 320 directly attached to the wall surface, preferably in a heat fusion process using a 'T-die'. Film layer 330 based on low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof, and a plurality of perforations 350 passing through at least a portion of wallpaper 300. It consists of

The embossed wallpaper 300 according to the present embodiment is a low density polyethylene, a linear low density polyethylene, a thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, melt-treated at a high temperature between the first paper layer 310 and the second paper layer 320. Alternatively, after fusion of the film 330 based on the mixture, the print layer 340 is formed on one surface of the first paper layer 310, and a plurality of penetrating means penetrates a part of the wallpaper 300. Form a perforation 350. 3A illustrates a state in which the punching means forms the punching 350 through a predetermined pressure and strength in the direction of the lower second paper layer 320 in the punching step. By forming the continuous embossed pattern 342 on the upper surface of the printing layer 340 through the embossing roll or the like after the punching treatment, the back surface of the first base layer 310 in which the embossed pattern 342 is directly formed is attached to the wall surface as well. The second base layer 320 and the film 330 are also formed on the rear surface thereof with a concave surface 344.

As described with reference to FIG. 2, such as a pin roll or a laser in the process of conveying the laminated paper on which the first paper layer 310, the film layer 320, and the second paper layer 320 are stacked or the print layer formed on the surface thereof. When an appropriate pressure or strength is applied through the puncturing means, the perforation 352 and the entire wallpaper 300 penetrating only the lower second paper layer 320 and the film layer 330 formed thereon according to the pressure or strength. The perforation 354 penetrating the through, the perforation 356 penetrating through the remaining portion except the printed layer 340 may be formed.

According to the present embodiment, low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, having excellent impact strength, flexibility, tensile force, shrinkage force, etc., between the first base layer 310 and the second base layer 320. Or the film 330 based on the mixture is laminated to strengthen the durability of the laminated wallpaper, thereby preventing the embossed pattern 342 from sinking or breaking during the wall coating process, but the adhesion to the wall It can be a problem.

Accordingly, preferably, a separate paper layer that can be completely attached to the wall surface may be provided, and FIG. 3B illustrates a laminated wallpaper formed on the bottom surface of the second paper layer 320 described above. It is a cross section of.

As shown in FIG. 3B, a substantially horizontal third base layer (not embossed) is applied to the bottom of the second base layer 320 formed on the bottom of the embossed wallpaper 300 described in FIG. 3A. 322 is provided, between the bottom of the second base layer 320 having the recessed surface 344 and the top surface of the third base layer 322, low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate , The second film layer 332 based on polypropylene or a mixture thereof is laminated.

For this configuration, as shown in FIG. 3A, the 'first paper layer 310-the first film layer 330 provided with the print layer 340, the continuous embossed pattern 342, and the plurality of perforations 350 are provided. ) -Second paper layer 320 'and the untreated third paper layer 322 are simultaneously charged / feeded in opposite directions, respectively, and melted at a high temperature by the same heat fusion process as described above. Treated low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymeric material based on these mixtures flows between the paper and the third paper layer 322 to form the paper and the third paper layer 322. The second film layer 332 is laminated therebetween, and then a plurality of layers essentially penetrating the third paper layer 322 and the second film layer 332 when operated by the puncturing means in the direction of the third paper layer 322. Formed perforation 360 . Even in this case, the perforations 362, the third base layer 322, and the second film layer 332 penetrating through the third film layer 322 to the first film layer 330 according to the pressure and strength applied from the drilling means. Perforations 364 penetrating only), and perforations 366 penetrating from the third base layer to the second base layer.

That is, the laminated wallpaper shown in FIG. 3B is a low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof for lamination of the first paper layer 310 and the second paper layer 320. Of the first base layer-first film-second base layer and the third base layer 322 which have undergone the first heat fusion and first drilling step for melting the material mainly comprising It is prepared through a second heat fusion and second drilling step of melting a low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a material based on these mixtures for lamination.

In FIGS. 3A and 3B, a low density polyethylene, a linear low density polyethylene, a thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymer based on these mixtures are interposed between the base layers while simultaneously supplying the base layers, and laminated. Although the case has been described, it is possible to manufacture the wallpaper by the step of the base layer is in close contact with the polymer material through a separate step, Figure 4a is the first base layer and the molten polymer is in close contact, after the perforation treatment 2 is a cross-sectional view of the wallpaper 400 produced through the step of the base layer is in close contact with the polymer.

The wallpaper 400 shown in FIG. 4A includes a first base layer 410 having a printing layer 440 and a continuous embossed pattern 442 formed thereon, and a first substrate layer 410 spaced apart from a bottom surface of the first base layer 410. 2 Low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, laminated between the base paper layer 420 and the bottom surface of the first base paper layer 410 and the top surface of the second base paper layer 420. And a plurality of perforations 450 penetrating through the film layer 430 based on these mixtures, and the film layer 430 or the film layer 430 / first paper layer 410. The recessed surface 444 corresponding to the embossed pattern 4420 is formed in the bottom surface.

According to the present embodiment, first, a low density polyethylene, a linear low density polyethylene, a thermoplastic polyurethane, an ethylene vinyl acetate, a polypropylene, or a polymer mainly containing these mixtures is introduced by feeding only the first base paper 410, The molten polymer is uniformly fused to the back surface of the first paper 410 so that the film layer 430 is laminated on the back surface of the first paper 410. After cooling, if a punching means such as a laser or a pin roll is applied with a predetermined pressure and strength in the direction of the film layer 430 laminated on the first paper 410, as shown in FIG. 450) is formed. In this case, a perforation 452 penetrating through the film layer 430 / first base layer 410 and a perforation 454 penetrating only the film layer 430 may be formed according to the applied pressure.

After such a punching step, when the second press 420 is separately supplied to the film layer 430 in close contact with the first base layer 410 and subjected to a heat press treatment, the second base paper ( 420 is in close contact with each other to form a paper composed of a 'first paper layer 410-film layer 430-a second paper layer 420'. Subsequently, a predetermined print layer 440 is formed on the surface of the first paper layer 410, and a continuous embossed pattern 442 is formed through an embossing process.

On the other hand, unlike shown in FIG. 4A, the first base 420 and the high-temperature molten low-density polyethylene, linear low-density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymer based on these mixtures are first melted to form a first adhesive. 2 After the perforation treatment is performed in the direction of the film layer 430 in close contact with the base paper 420, the first base paper 410 is brought into close contact with the back surface of the film layer 430, and a printing process and an embossing process are performed. A wallpaper 400 such as 4b is produced. That is, the plurality of perforations 460 formed in this case penetrates only the perforations 462 and the film layer 430 penetrating through the second paper layer 420 / film layer 430 according to the pressure applied in the drilling step. Perforations 464 may be divided.

4A and 4B, the back surface of the wallpaper 400 including the second base layer 420 attached to the wall has a recessed surface 444 corresponding to the embossed pattern 442. There is a possibility that the adhesive force is reduced, even in this case, a separate base layer that can be completely attached to the bottom surface of the second base layer 420 through the second heat fusion process and the second drilling process as described in FIG. 4C is a cross-sectional view of the laminated wallpaper on which the separate base layer 422 is formed on the bottom surface of the second base layer 420 described above.

That is, as described in FIG. 4A, the 'first paper layer 410-the first film layer 430-provided with the print layer 440, the continuous embossed pattern 442, and the plurality of perforations 450 are provided. The paper composed of the second paper layer 420 'and the third paper layer 422 which have not been treated at the same time are simultaneously charged / feeded in opposite directions, and melted at a high temperature by the same thermal fusion process as described above. A low density polyethylene, a linear low density polyethylene, a thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymer material based on these mixtures flows between the paper and the third paper layer 422 to form a gap between the paper and the third paper layer 422. The second film layer 432 is laminated, and then a plurality of perforations essentially penetrating the third paper layer 422 and the second film layer 432 when operated by the drilling means in the direction of the third paper layer 422. 470). Even in this case, the perforation 472 and the third base layer 422 and the second film layer 432 penetrating the third base layer 422 through the first film layer 430 according to the pressure and strength applied from the perforation means. Perforations 474 and only perforations 476 penetrating through the third base layer 422 to the second base layer 420 may be formed.

Next, the manufacturing process of the embossed wallpaper according to the preferred embodiment of the present invention configured as described above will be briefly described. FIG. 5 is a flowchart illustrating a manufacturing process of an embossed wallpaper in which a molten polymer is fused at the same time to a base paper layer according to an embodiment of the present invention.

First, the first base paper and the second base paper on which the surface or the back surface does not have any pattern are introduced / supplied in opposite directions, respectively (S510). At this time, the first base paper and the second base paper are configured to be simultaneously supplied from both sides in a rolled-up state. On the other hand, in order to laminate the polymer between the base paper, a low density polyethylene, a linear low density polyethylene, a thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymer based on these mixtures is melted at a high temperature (S512), so that the polymer material is To flow down from.

The polymer material to be melted according to the present invention is based on low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, and mixtures thereof, in consideration of properties such as strength, shrinkage, and elasticity of the finished wallpaper. Their content accounts for 70% to 100% by weight. In particular, other high molecular weight materials may be added in addition to the low density polyethylene to facilitate curing of the finished film layer. For this purpose, the high density polyethylene may be preferably blended into the polymer material which is melt-treated at a content of 30% by weight or less. have. If the content of the high-density polyethylene exceeds 30% by weight, there is a fear that physical properties such as shrinkage of the finished wallpaper and the like.

On the other hand, such a melting process may be carried out at a slightly different temperature depending on the polymer material used, but preferably, when the low density polyethylene is used as a main body at a temperature of approximately 310 ~ 340 ℃, the linear low density polyethylene is used as the main body The polypropylene is mainly used at a temperature of 320 to 350 ° C., at a temperature of about 230 to 270 ° C. when the thermoplastic polyurethane is used as the main body, and at a temperature of about 230 to 280 ° C. when the ethylene vinyl acetate is used as the main material. In the case of use, after melting each at a temperature of about 290 to 350 ° C. and extruding them, a low density polyethylene, a linear low density polyethylene, a thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof is used as a raw material for the film layer. The polymer can be flowed slowly into the liquid phase.

Thus, when the low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymer material mainly composed of these mixtures is melted and flows downward, the first and second base papers are formed from the left and right sides. Is supplied at the same time, so that the molten polymer material is interposed between the first base layer and the second base layer, and the molten low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or mixtures thereof are predominant. Due to the unique adhesiveness of the polymer material, the polymer material is fused in the form of a film between the first and second paper layers. At this time, preferably, the polymer material adjusts the extrusion speed of the polymer material and the feeding speed of the first and second paper so that the polymer material can be fused between the first and second paper with a thickness of approximately 10 to 40 μm. .

Low-density polyethylene, linear low-density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymer based on these mixtures, which are melt-treated between the first and second papers, are formed and formed into a laminated form and then melted when laminated. The polymer is cooled (S516) to allow a low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymer based on these mixtures to be fused in the form of a complete film between the base layers. The paper laminated | stacked by the 1 base paper layer-film second paper layer 'is wound up again using a roller etc. (S518).

The wound paper passes through a general process for manufacturing an embossed wallpaper, and first forms a printing layer on the upper surface of the first paper layer of the wound paper (S520). In this case, the printing layer forming step S520 may be performed by forming a predetermined printing layer, for example, through a gravure printing technique. When the printing layer is formed in this way, a general wallpaper on which a film based on low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof is laminated between the base layer and the base layer.

After the printed layer process is completed as described above, a plurality of perforations are formed on the wallpaper using a puncturing means, for example, a pin roll or a laser (S522). The shape of the pin roll will be described in detail with reference to FIGS. 7 to 8. In some cases, the order of the print layer forming step S520 and the drilling step S524 may be reversed. By such a process, a general wallpaper having a plurality of perforations can be produced. In some cases, the printing layer forming step S520 may be performed after the punching forming step S522 so that no perforation is formed in the printed layer.

Meanwhile, in order to manufacture the embossed wallpaper, after the pre-set printing layer formation and perforation step, the entire paper is passed through an embo roll to form a protruding embossed pattern on the front of the paper, and the recessed surface is continuously formed on the back. To form the embossed (S524). At this time, in order to form the embossing, for example, a groove is formed between the first embossing roll made of metal having a plurality of protrusions and the second embossing roll coated with rubber or paper and provided with grooves corresponding to the protrusions of the first embossing roll. It can be passed through, it can be configured such that the surface of the first paper layer on which the printing layer is formed can be in contact with the second embossing roll coated with rubber or paper. Through such embossing process (S524), a plurality of continuous embossed patterns are formed on the paper as a whole.

Subsequently, the printed layer, the embossed pattern and the perforated wallpaper are wound up (S526), and in some cases, subjected to a drying step (S528), whereby low density polyethylene, linear low density polyethylene, and thermoplastic poly having excellent elasticity and strength between the base paper layers The embossed wallpaper according to the present invention in which a film based on urethane, ethylene vinyl acetate, polypropylene, or a mixture thereof is laminated can be completed.

On the other hand, in order to manufacture a higher strength high quality embossed wallpaper as shown in Figures 3b and 4c again melted and perforated with respect to the lamination of the first paper layer-film-second paper layer completed printing, punching and embossing treatment The process is repeated. In other words, the paper and the third base layer composed of the 'first base layer-film-second base layer' formed with the print layer, the embossed pattern and the perforation are respectively supplied from the left and right sides and melted again at a predetermined temperature. Low-density polyethylene, linear low-density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymer composed of a mixture thereof, can be extruded and flowed to the lower portion. After fusion, cooling, and performing the perforation treatment, an advanced embossed wallpaper having two film layers having a plurality of different perforations formed as shown in FIGS. 3B and 4C may be manufactured. Winding the high-quality embossed wallpaper thus produced and, if desired, drying may complete the final high-quality embossed wallpaper.

On the other hand, Figure 6 is a flow chart showing the manufacturing process of the wallpaper is produced by fusion of the polymer melted at a high temperature in accordance with a preferred embodiment of the base paper separately, representatively that the first base paper is first fused to the polymer Shown.

First, the first base paper is supplied from one side (S610), and at the same time, the polymer is melted at a high temperature by melting a polymer mainly composed of low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof. To flow in (S612). After the liquid polymer is fused to one surface of the first base paper by such a treatment (S614), and the polymer is cooled (S616), the polymer film is first attached to one surface of the first base paper. Subsequently, in the direction in which the polymer film is formed, a plurality of perforations penetrating the film layer or the film layer / first paper layer is formed through the drilling means such as a laser or a pin roll (S618). As described above, when the heat press operation is performed while supplying the second base paper to the side on which the polymer film having the perforation is formed (S620), the second base paper is fused to the back surface of the film layer because the polymer film is instantly melted and exhibits adhesiveness (S622). ). Subsequently, after cooling the polymer (S624), the embossed wallpaper having a plurality of perforations formed through printing layer formation (S626), embossing treatment (S628), lamination winding (S630) and drying (S632) as described in FIG. Are manufactured.

Next, according to the present invention, a wallpaper material for forming a film layer based on low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof between the base layer and the base layer, the polymer material The case of using the 'T-die' to melt at a high temperature to have a laminated structure between the base layer will be briefly described. 7 is used in the process of laminating the low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymer based on these mixtures between the base layer by heat fusion according to a preferred embodiment of the present invention The configuration including the T-die extruder is shown.

Wallpaper manufacturing apparatus according to an embodiment of the present invention is largely low-density polyethylene, linear low-density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or T to melt a polymer mainly based on these mixtures to be laminated between the base layer The die 700 and the film layer are laminated between the base paper layers, and then the printing unit 750 for forming a printing layer on the surface of the first base layer, the perforations 760 for forming a plurality of perforations, and the embossing processing unit. 770.

First, an extruder 704 subjected to high temperature is horizontally extended at the center of the T-die 700 used in the heat fusion step. One end of the extruder 702 extends freely, while the other end is a polymer supply unit for storing polymers based on low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof. 702), low-density polyethylene, linear low-density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymer based on these mixtures introduced into the polymer supply unit 702 is subjected to a high temperature treated extruder 704. A kind of sol state in which the low density polyethylene, the linear low density polyethylene, the thermoplastic polyurethane, the ethylene vinyl acetate, the polypropylene, or the polymer based on these mixtures may be moved by high temperature treatment in the extruder 704. Is converted to. Although not shown in the drawing, a groove or a hole is formed in the bottom of the extruder 704 so that low-density polyethylene, linear low-density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or molten by high temperature treatment in the extruder 704 or The polymer 730 based on these mixtures may flow down.

On the other hand, both sides of the T-die 700, the first paper feed roller 802 so that the first paper layer 710 and the second paper layer 720, which are wound in a predetermined form, may be respectively introduced into the center. And a second paper feed roller 804. In this case, when the printing layer is formed on the surface of the first paper layer 710, the surface of the first paper layer 710 on which the printing layer is formed should be introduced so as to face the bottom surface of the first paper layer 710. On the back side which is not formed, low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymer based on these mixtures may be fused.

Through the operation of the first paper feed roller 802 and the second paper feed roller 804, the first paper layer 710 and the second paper layer 720 are supplied to the center and at the same time from the extruder 704. Low-density polyethylene, linear low-density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a molten polymer mainly composed of these mixtures flows downward so that they melt between the first base layer 710 and the second base layer 720. The polymer material is uniformly attached, and in this process, a bonding roll 806 symmetrically formed at the center bottom of the T-die may be used.

When the polymer heat-treated between the first base layer 710 and the second base layer 720 is fused, and then cooled at room temperature, the polymer fused between the base layers is cured in the state of being bonded to the base layer. When the low density polyethylene, the linear low density polyethylene, the thermoplastic polyurethane, the ethylene vinyl acetate, the polypropylene, or a film layer based on these mixtures are laminated between the first and second paper layers, the paper 740 is formed. , And rolled up by the lamination winding roll 808 may be used in the next manufacturing step.

For example, if there is no treatment in the above-described first base layer, low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, to form a printing layer on the upper surface of the first base layer 710, Alternatively, the laminated paper on which the film layer mainly containing these mixtures is laminated is first introduced into the printing unit 750 to form a printing layer on the upper surface of the first paper layer.

Subsequently, the wallpaper on which the printing operation is completed is transferred to the perforator 760 to form a plurality of perforations on the wallpaper. The perforations 760 according to the present invention comprise at least a first perforated layer and a plurality of perforations penetrating through a film layer based on low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or mixtures thereof. For example, a method of projecting a laser beam having a predetermined intensity toward one surface of the wallpaper may be used in the process of transferring the embossed wallpaper, and the pin-roll may be provided on the wallpaper as illustrated. Multiple perforations can be formed.

If it is desired to form perforations in the wallpaper through the pin roll, as shown in FIGS. 7 and 8, the perforations 760 may include a pin roller having a plurality of pins 764 disposed along an outer circumference thereof. 762 and a press roller 766 which is provided with a recess 768 in contact with the pin 764. Through this, as the laminated wallpaper passes between the pin roller 762 and the press roller 766, a plurality of perforations are formed by pressing the plurality of pins 764, thereby providing air permeability. In this case, as described above, the shape of the perforation may vary depending on the pressure applied to the pin 764 formed on the pin roller 762.

When the punching operation is completed in the punching unit 760, the wallpaper is transferred to the embossing processing unit 770 to form a plurality of embossing patterns. At this time, in order to form the embossing, for example, a metal first embossing roll 772 having a plurality of protrusions and grooves (not shown) corresponding to the protrusions of the first embossing rolls 772 are provided. The paper may pass between the surface-covered second embossing rolls 774, wherein the surface of the first paper layer on which the printing layer is formed may contact the second embossing roll 774 coated with rubber or paper. Can be configured to Through such embossing, a plurality of continuous embossed patterns are formed on the paper as a whole. The configuration of such embossing rolls is well known in the art.

Hereinafter, the present invention will be described in more detail through illustrative examples, but the present invention is not limited by the examples.

Example 1

White paper was used as a base paper layer, and low density polyethylene was used as a raw material of the film layer interposed therebetween. The upper base paper (first base paper) was white paper (80 g / m) manufactured by Hankuk Paper, the lower base paper (second base paper) was white paper (80 g / m²) manufactured by Samwha Paper, and the low density polyethylene used was LB- 4500 (LG Chemistry).

Melting of low density polyethylene and fusion of the molten low density polyethylene between the upper base and the lower base using a T-die extrusion machine (Shinhan Machinery), and embossing with perforations formed from the lamination of the upper base-LDPE film-lower base formed through fusion In order to form a wallpaper, a wallpaper maker (Daedong Machinery) was used.

First, the upper and lower limbs were fed from the left and right simultaneously on the rolls provided on both sides of the T die and toward the LDPE extruder located in the middle. LDPE heated from the LDPE extruder (average heating temperature 320 ℃) is introduced into the bottom between the paper in the form of a liquid film of 10 ~ 40 ㎛ (average of about 20 ㎛) by the liquid film is adhered between the upper and lower limbs and filming can occur at the same time It was made.

The laminated paper is rolled up in the form of a roll, and the laminated paper of the three-layer structure consisting of the finished upper paper-LDPE film-base is printed, punched (pin roller), and embossed molding according to the same method as the existing paper wallpaper. Completed. However, the adhesive coating process was not necessary, so it was excluded from the manufacturing process.

Example 2

Example of the above example except that the melt is maintained at a temperature of 330 to 340 ° C. using linear low density polyethylene (LLDPE, Hanwha 9730) as a raw material of the film laminated between the upper and lower limbs, and then fused between the upper and lower limbs. A laminated wallpaper was completed according to the same procedure as in step 1.

Example 3

50% by weight of low density polyethylene (LB 5000, LG Chemical) and linear low density polyethylene (Hanhwa 9730) were mixed and melted at 330 to 340 ° C to fuse between the upper and lower limbs. Except for the above, the laminated wallpaper was completed according to the same procedure as in Example 1 above.

Example 4

As a raw material for the film laminated between the upper and lower limbs, 20 wt% of low density polyethylene (LB 5000, LG Chemical) and 80 wt% of linear low density polyethylene (Hanhwa 9730) are mixed and melted at 330 to 340 ° C. Except for fusion, the laminated wallpaper was completed according to the same procedure as in Example 1 above.

Example  5

80% by weight of low density polyethylene (LB 5000, LG Chemical) and 20% by weight of linear low density polyethylene (Hanhwa 9730) are mixed and melted at 330 to 340 ° C as a raw material for the film laminated between the upper and lower limbs. Except for fusion, the laminated wallpaper was completed according to the same procedure as in Example 1 above.

Example 6

90% by weight of low density polyethylene (LB 5000, LG Chem) and 10% by weight of high density polyethylene (ME 9180, LG Chem) are mixed and melted at 350 to 360 ° C as raw materials for the film laminated between the upper and lower limbs. The laminated wallpaper was completed according to the same procedure as in Example 1 except that it was fused therebetween.

Example 7

75 wt% of low density polyethylene (LB 5000, LG Chemical) and 25 wt% of high density polyethylene (ME 9180) are mixed and melted at 350 to 360 ° C. as a raw material for the film laminated between the upper and lower limbs. Except for the laminated paper was completed according to the same procedure as in Example 1 above.

Example 8

90 wt% of linear low density polyethylene (Hanhwa 9730) and 10 wt% of high density polyethylene (ME 9180) were mixed and melted at 350 to 360 ° C. as a raw material of the film laminated between the upper and lower limbs. Except for the above, the laminated wallpaper was completed according to the same procedure as in Example 1.

Example 9

As a raw material of the film laminated between the upper and lower limbs, 75% by weight of linear low density polyethylene (Hanhwa 9730) and 25% by weight of high density polyethylene (ME 9180) were mixed and melted at 350 to 360 ° C. to be fused between upper and lower limbs. Except for the above, the laminated wallpaper was completed according to the same procedure as in Example 1.

Example 10

The same procedure as in Example 1 above, except that the melted at 250 ~ 260 ℃ using a thermoplastic polyurethane (TPU, Hosung Kemax 325H) as a raw material of the film laminated between the upper and lower limbs and fused between the upper and lower limbs According to complete the laminated wallpaper.

Example 11

The same procedure as in Example 1 above, except that the melted at 250 ~ 270 ℃ using a thermoplastic polyurethane (TPU, Hoseong Kemax 720) as a raw material of the film laminated between the upper and lower limbs and fused between the upper and lower limbs According to complete the laminated wallpaper.

Example 12

According to the same procedure as in Example 1, except that ethylene vinyl acetate (EVA, Samsung E155L) was used as a raw material for the film laminated between the upper and lower limbs, and was melted at 240 to 260 ° C. to fuse the upper and lower limbs. Laminated wallpaper was completed.

Example 13

Example 1 and the above except that it was melted at 300 ~ 330 ℃ using polypropylene (Samsung, LH72S) containing a certain amount of LDPE as a raw material of the film laminated between the upper and lower limbs and fused between the upper and lower limbs The same procedure was followed to complete the laminated wallpaper.

Example 14

Example 1 and the above except that the melted at 310 ~ 340 ℃ using polypropylene (Samsung, RC770) containing a certain amount of LDPE as a raw material of the film laminated between the upper and lower limbs and fused between the upper and lower limbs The same procedure was followed to complete the laminated wallpaper.

Comparative example

The laminated wallpaper was completed according to the same procedure as in Example 1 except that the adhesive was applied according to the conventional method between the upper and lower limbs.

Experimental Example 1

In the present experimental example, the shrinkage ratio of the laminated wallpaper prepared according to the above-mentioned comparative example of the conventional method and the laminated wallpaper prepared according to the present invention was compared. The export rate was compared with the immersion export rate and the dry shrinkage rate to compare the disappearance or depression of the embossing formed on the laminated wallpaper.

For this purpose, paste is applied to the back surface of each manufactured wallpaper for the convenience of the site environment and the construction when the finished wallpaper is applied.Then, the wallpaper is sealed after sealing it in vinyl for at least 2 hours and up to 48 hours. The degree of shrinkage was compared. The results are shown in Table 1 below. As can be seen from the results of Table 1, the laminated wallpaper produced according to the present invention was confirmed that hardly shrinkage as compared to the case of applying the adhesive according to the conventional method, and thus it was confirmed that there is little embossing disappearance.

Table 1. Shrinkage rate of wallpaper of the present invention and conventional wallpaper

Example Immersion Shrinkage (%) Dry Shrinkage (%) Example 1 0.25 -0.23 Example 2 0.17 -0.19 Example 3 0.20 -0.21 Example 4 0.18 -0.19 Example 5 0.22 -0.22 Example 6 0.14 -0.15 Example 7 0.15 -0.17 Example 8 0.10 -0.12 Example 9 0.11 -0.14 Example 10 0.10 -0.11 Example 11 0.09 -0.10 Example 12 0.19 -0.24 Example 13 0.18 -0.22 Example 14 0.17 -0.21 Comparative Example 1 4.05 -0.81

Experimental Example 2

In the present experimental example, the strength of the wallpaper manufactured according to the present invention and the wallpaper manufactured according to the conventional method were measured according to a conventional method. The measurement results are shown in Table 2 below. As indicated, it can be seen that the wallpaper prepared according to the present invention has a significantly improved tensile strength compared to the conventional adhesive method. In this way, the increase in tensile strength can be used less than the paper used in the prior art, it is interpreted that not only can greatly reduce the cost, but also embossing can be expressed more in depth.

Table 2. Tensile strength of wallpaper of the present invention and conventional wallpaper

Example Room temperature tensile strength (㎏ / 1.5 ㎝) Heated tensile strength (㎏ / 1.5 ㎝) Example 1 3.01 3.48 Example 2 3.42 4.06 Example 3 3.25 3.76 Example 4 3.31 3.88 Example 5 3.17 3.64 Example 6 3.49 4.25 Example 7 3.76 4.41 Example 8 3.68 4.31 Example 9 3.84 4.57 Example 10 4.05 4.87 Example 11 4.11 4.89 Example 12 3.21 3.54 Example 13 3.67 3.92 Example 14 3.70 3.95 Comparative example 2.19 2.54

In the above description of the preferred embodiment of the present invention, it will be apparent that various modifications and changes to the present invention are possible. However, it will be more apparent through the appended claims that such variations and modifications fall within the scope of the present invention without departing from the spirit of the present invention.

In the present invention, instead of the adhesive and the foamed resin used between the base layer, a film based on low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof having excellent shrinkage and tensile strength is laminated. At the same time, a plurality of perforations are provided in the laminated film layer so as to prevent the peeling phenomenon of the wallpaper caused by the residual moisture and the corrosion of the wallpaper due to the action of microorganisms inhabiting the moisture.

In addition, due to the film layer formed between the base layer, the durability of the finished wallpaper is greatly improved, as well as it is possible to prevent the embossing formed on the wallpaper from being damaged due to the wall coating process or the surrounding moisture.

In particular, the film placed between the base layer according to the present invention is a base paper which is the basic raw material of the wallpaper because it can prevent the embossing from sinking even if a smaller amount of base paper is used compared to the conventional base layer and the base layer using an adhesive The amount of was greatly reduced.

In addition, in the present invention, an automated "T-die" is used without using an adhesive in the process of laminating the base layer and the base layer, thereby greatly improving the efficiency and economic efficiency of the process. Accordingly, since the low density polyethylene film may be uniformly attached between the base layer and the base layer, efficiency and stability of wallpaper production may be increased.

In addition, it is evaluated as an environmentally friendly method because a large amount of human harmful substances do not occur when using a conventional adhesive. Furthermore, due to the elasticity of the low density polyethylene bonded by the fusion between the base layers, marks removed during the process of being left in the vinyl for 2 to 48 hours after application using a paper paste are removed. Can be.

Claims (8)

As a breathable wallpaper bonded through a heat fusion process, A first base layer; A second base layer formed on the back surface of the first base layer; A film layer laminated between the first base layer and the second base layer through a heat fusion process, wherein the polymer is selected from low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof. A film layer; Multiple perforations through the film layer Breathable wallpaper that includes. As a breathable wallpaper bonded through a heat fusion process, A first base layer; A second base layer formed on the back surface of the first base layer; A film layer laminated between the first base layer and the second base layer through a heat fusion process, 70 to 99.9 wt% of a polymer selected from low density polyethylene, linear low density polyethylene, or a mixture thereof, and 0.1 to 30 wt% of a high density polyethylene. A film layer which is a mixture of; Multiple perforations through the film layer Breathable wallpaper that includes. The method according to claim 1 or 2, A printing layer and an embossing are formed on top of the first base layer, and the film layer is configured to fill both the first base layer and the second base layer. The method according to claim 1 or 2, On the back surface of the second base layer, a second film layer mainly composed of a polymer selected from low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof, and on the back surface of the second film layer. Breathable wallpaper further comprising a third base layer formed. As a method of manufacturing a breathable wallpaper bonded through a heat fusion process, a) melting low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymer based on these mixtures; b) laminating the molten polymer between a first base paper and a second base paper; c) manufacturing a permeable wallpaper comprising the step of forming a perforation in the laminated polymer. The method of claim 5, Forming a printing layer on top of the first sheet of paper between steps b) and c), and forming embossing on top of the first sheet of paper on which the printing layer is formed after step c). Manufacturing method of breathable wallpaper. The method of claim 6, After the step of forming the embossing, a melt based on low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a mixture thereof between the printing layer, the perforated and embossed paper and the third base paper Stacking a second film layer between the second paper and the third paper by introducing the polymer, and forming a perforation in the second film layer and the third paper. As a method of manufacturing a breathable wallpaper bonded through a heat fusion process, a) melting low density polyethylene, linear low density polyethylene, thermoplastic polyurethane, ethylene vinyl acetate, polypropylene, or a polymer based on these mixtures; b) fusing the molten polymer on one surface of a first raw paper; c) forming perforations in the polymer; d) pressurizing and fusion bonding the polymer fused to one surface of the first base paper and the second base paper.

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