KR20200127822A - Semi-non combustible Wallpaper and method for manufacturing the same - Google Patents

Abstract

The present invention from the bottom to the top, an aluminum foil layer; Adhesive layer; A substrate including a glass paper layer; And a semi-non-combustible wallpaper comprising a surface resin layer, wherein the surface resin layer includes a polyvinyl chloride resin, and the semi-non-combustible wallpaper is a total release of wallpaper for 10 minutes after the start of the heating test measured based on KS F ISO 5660-1 It relates to a semi-non-combustible wallpaper having a calorific value of 8 MJ/m ² or less and a method of manufacturing the same, and more particularly, to a semi-non-combustible wallpaper having semi-non-combustibility and easy processability and a method of manufacturing the same.

Description

Semi-non combustible Wallpaper and method for manufacturing the same}

The present invention relates to a semi-non-combustible wallpaper and a method for manufacturing the same, and more particularly, to a semi-non-combustible wallpaper and a method of manufacturing the same, while having semi-non-combustibility, design and workability are easy.

As is well known, wallpaper is used for the purpose of improving the aesthetics of the interior by decorating the interior walls of buildings such as houses and offices, and to block condensation caused by temperature differences inside and outside the walls, and is essential in modern life. It can be said to be an essential element of an important life.

In the past, such wallpaper has been used only for blocking the condensation phenomenon described above, but in recent years, as the desire of modern people to improve the standard of living and to pursue a healthy and comfortable life increases, in addition to the basic decorative purpose and blocking of condensation. It is a situation in which the development of wallpaper with various functions is required.

As a result, the wallpaper goes beyond the simple decorative function of decorating the interior and the function of blocking condensation, as an object of appreciation, its aesthetics, excellent touch, flame retardancy that does not burn well in case of fire, and external noise does not enter the interior. By blocking noise generated inside, it is required to have a soundproof function capable of reducing noise that is likely to occur between neighbors, and durability that can withstand a certain amount of impact, and easy processability is required.

In particular, in recent years, as buildings have become skyscrapers, interest in wallpaper to prevent the spread of flames when a fire occurs in a certain space of the building is increasing, and as a result of this interest, various types of wallpaper with flame retardancy have been Is being developed.

Accordingly, for example, Korean Utility Model Publication No. 20-0219294 discloses a flame-retardant wallpaper in which an aromatic polyamide paper having excellent heat resistance is bonded to a flame-retardant medium, that is, a silk wallpaper made of polyvinyl chloride. Are doing. However, the flame-retardant wallpaper as described above has a problem in that it is applied only in a limited area to multi-use businesses such as rest restaurants and tanran pubs due to the reinforcement of fire-related laws.

In addition, Korean Patent Laid-Open No. 10-2018-0096972, previously filed by the present applicant, describes a semi-non-combustible wallpaper in which a coating layer formed of a silicone resin is formed on a glass fiber base layer, but the processability is poor due to the use of the silicone resin. , There was a problem in securing sufficient non-flammability.

In addition, Japanese Laid-Open Patent Publication No. 2018-47710 describes a non-flammable decorative material in which a thermoplastic adhesive sheet is formed on an aluminum sheet and a surface layer, but the use of a thermoplastic resin has the same problem in improving non-flammability.

Therefore, in order to solve the above problems, there is an urgent need to develop a semi-non-combustible wallpaper with excellent flame retardancy and easy design and processability.

KR 20-0219294 Y1 (2001. 01. 27.) KR 10-2018-0096972 A (2018. 08. 30.) JP 2018.47710 A (2018.03.29)

The present invention was devised to solve the above problems, while having semi-incombustibility due to self-extinguishing of polyvinyl chloride resin, it is easy to process, and the surface of the substrate is flattened by the surface resin layer, so that design and printability are It is aimed at providing an improved semi-nonflammable wallpaper.

In addition, it is an object of the present invention to provide a method of manufacturing the semi-nonflammable wallpaper.

In order to achieve the above object, the present invention provides a substrate including an aluminum foil layer, an adhesive layer, and a glass paper layer from the bottom to the top; Primer layer; And a semi-non-combustible wallpaper comprising a surface resin layer, wherein the surface resin layer includes a polyvinyl chloride resin, and the semi-non-combustible wallpaper is a total release of wallpaper for 10 minutes after the start of the heating test measured based on KS F ISO 5660-1 Provides semi-non-combustible wallpaper with heat content of 8 MJ/m ² or less.

In addition, the present invention comprises the steps of preparing an aluminum foil layer (S1); Forming an adhesive layer on the aluminum foil layer (S3); Laminating a glass paper layer on the adhesive layer (S5); Forming a primer layer on the glass paper layer (S7); And forming a surface resin layer on the primer layer (S9), wherein the surface resin layer includes polyvinyl chloride resin, and the semi-non-combustible wallpaper is KS F ISO 5660- 1 Provides a method of manufacturing semi-non-flammable wallpaper in which the total amount of heat emitted from the wallpaper is 8 MJ/m ² or less for 10 minutes after the start of the heating test measured as a standard.

The semi-nonflammable wallpaper of the present invention includes an aluminum foil layer and a glass paper layer as a substrate, and a primer layer is formed between the glass paper layer and a surface resin layer formed on the glass paper layer to improve adhesion, and The formation layer has an effect of further improved semi-non-combustibility by using a polyvinyl chloride resin.

In addition, by including polyvinyl chloride in the surface resin layer, there is an effect of excellent processability.

In addition, the top of the base layer is flattened by the surface resin layer, so that the design and printing quality are excellent.

1 is a side cross-sectional view schematically showing a laminated structure of a semi-non-combustible wallpaper according to the present invention.
2 is a side cross-sectional view schematically showing a laminated structure of another embodiment of a semi-non-combustible wallpaper according to the present invention.
3 is a side cross-sectional view schematically showing a laminated structure of another embodiment of a semi-non-combustible wallpaper according to the present invention.
4 is a side cross-sectional view schematically showing a stacked structure of another embodiment of a semi-non-combustible wallpaper according to the present invention.
5 is a flow chart of a method of manufacturing a semi-nonflammable wallpaper according to the present invention.

Hereinafter, the present invention will be described in detail together with the accompanying drawings.

The present invention includes a substrate (S) including an aluminum foil layer 10, an adhesive layer 30, and a glass paper layer 50 from the bottom to the top; A semi-non-combustible wallpaper comprising a primer layer 70 and a surface resin layer 90, wherein the surface resin layer contains polyvinyl chloride resin, and the semi-non-combustible wallpaper is a heating test measured based on KS F ISO 5660-1 It relates to a semi-non-flammable wallpaper (1), which is less than 8 MJ/m ² of total heat emitted from the wallpaper for 10 minutes after initiation (see FIG. 1).

The semi-non-flammable wallpaper (1) of the present invention may have a total heat emission of 8 MJ/m ² or less for 10 minutes after the start of the heating test as a result of the heat release rate test, and the maximum heat release rate for 10 minutes is 200 kW/m ² or more continuously for 10 seconds or more. It does not exceed, and there may be no cracks, holes and melting, which are harmful to fire through the specimen. The heat release rate test was performed according to KS F ISO 5660-1. The semi-non-flammable wallpaper (1) of the present invention satisfies the above conditions for the total amount of heat emitted and the maximum heat release rate, and there are no cracks, holes, and melting, which are harmful to fire through the test body, so that the semi-non-combustibility may be satisfied.

At this time, the lower limit of the total amount of heat emitted is not particularly limited, for example, may be 0.5 MJ/m ² , and the lower limit of the maximum heat release rate is not particularly limited, and may be, for example, 10 kW/m ² .

In addition, the semi-nonflammable wallpaper (1) of the present invention has excellent semi-noncombustibility, including a surface resin layer 90 containing polyvinyl chloride, which has excellent self-extinguishing property and easy processability, and the surface resin layer 90 When forming a print layer by flattening the upper surface of the substrate S, excellent initial print quality and print durability can be realized.

In addition, by forming the primer layer 70 between the glass paper layer 50 and the surface resin layer 90, the adhesion between the glass paper layer 50 and the surface resin layer 90 can be further improved. Excellent peel strength can be realized.

In addition, the surface resin layer 90 is made of polyvinyl chloride resin as a main component, so that resin properties can be easily adjusted, and thus the required physical properties of the semi-non-flammable wallpaper (1) can be easily obtained, and processability is easy. It is possible to implement the semi-nonflammable wallpaper (1) of the present invention.

Hereinafter, each layer of the semi-nonflammable wallpaper 1 of the present invention will be described in detail.

Aluminum foil layer(10)

The aluminum foil layer 10 achieves semi-incombustibility by minimizing the effect of radiant heat transfer by increasing the reflectivity of the material surface and lowering the emissivity, and is processed by rolling aluminum or aluminum alloy to a set thickness. I can.

The thickness of the aluminum foil layer 10 may be 0.005-0.030mm, or 0.007-0.025mm. When the aluminum foil layer 10 has a thickness within the above range, a high level of semi-incombustibility and resistance to moisture are simultaneously realized without excessively increasing the thickness of the wallpaper, so that the semi-non-flammable wallpaper 1 It can effectively suppress deformation such as contraction, expansion and warping due to moisture while improving stability by slowing the spread of fire.

Adhesive layer (30)

The adhesive layer 30 may be positioned on the aluminum foil layer 10 to implement adhesion between the aluminum foil layer 10 and the glass paper layer 50. The adhesive layer 30 may be formed using an adhesive or an adhesive film.

The adhesive is, for example, a general rosin, natural latex, glue, casein, sodium alginate, gelatin and natural asphalt that does not contain a VOC (Volatile Organic Compound) material, or a water-soluble adhesive (vinyl acetate, acrylic, It may be one or more selected from the group consisting of ethylene-vinyl acetate copolymer (EVA system)).

The adhesive film is, for example, a polyolefin-based resin and an ethylene-based copolymer (eg, ethylene-vinyl acetate copolymer (EVA), ethylene-methyl methacrylate copolymer (EMMA), ethylene-acrylic acid copolymer (EAA)), ethylene- Ethyl acrylate copolymer (EEA), ethylene-methyl acrylate copolymer (EMA), ethylene-methacrylic acid copolymer (EMAA) and ethylene-α olefin copolymer), styrenic block copolymer (for example, styrene-isoprene -1 selected from the group consisting of styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS) and hydrogenated products thereof), thermoplastic polyurethane resin (TPU), acrylic resin and polyamide resin It may be a hot melt adhesive film in which more than one species is mixed.

The adhesive layer 30, for example, has excellent uniformity compared to a liquid adhesive and does not contain an organic solvent, so an eco-friendly adhesive film can be used.

The thickness of the adhesive layer 30 may be 5-30 μm, or 5-20 μm. When the adhesive layer 30 has a thickness in the above range, excellent adhesiveness and semi-incombustibility can be realized between the aluminum foil layer 10 and the glass paper layer 50, and the wallpaper 1 is applied to the curved surface. It can prevent the delamination that may occur when it is formed.

Glass paper layer (50)

The glass paper layer 50 is for improving semi-incombustibility and may be glass paper. The glass paper may mean that the glass fiber is made of a glass chop cut into a predetermined length as a main material.

The glass paper is, for example, an organic binder to form a raw material by mixing glass chop, pulp, water and additives together, and after the raw material goes through a papermaking process, the surface smoothness and mechanical properties of the formed paper are supplemented. It may be manufactured by passing through a process of impregnating a solution and drying it, but is not limited thereto and may be manufactured by various known glass paper manufacturing processes.

The basis weight of the glass paper layer 50 may be 20-40g/m ² , or 25-35g/m ² . The basis weight may be a value calculated according to the regulations of JIS P 8124. When the glass paper layer 70 has a basis weight within the above range, excellent durability and semi-non-combustibility may be implemented at a low manufacturing cost.

The thickness of the glass paper layer 50 may be 0.1-0.4mm, or 0.15-0.3mm. When the glass paper layer 50 has a thickness within the above range, it is possible to implement the semi-incombustibility to a sufficiently high level without excessively increasing the thickness of the semi-non-flammable wallpaper 1 including the same.

Primer layer (70)

The primer layer 70 may be positioned on the glass paper layer 50 to improve adhesion between the glass paper layer 50 and the surface resin layer 90.

The primer layer 70 may be, for example, a primer including a polyurethane-based resin or a modified polyurethane-based resin, but is not limited thereto.

The coating basis weight of the primer layer 70 may be 2-10g/m ² , or 3-7g/m ² , and when the primer layer 70 has a coating basis weight in the above range, the glass paper layer 70 The adhesion between the and the surface resin layer 90 may be improved, and excellent peel strength may be realized.

When the coating basis weight of the primer layer 70 is less than 10 g/m ² , it is difficult to impart adhesion between the glass paper layer 50 and the surface resin layer 90, and when it exceeds ² g/m ² , the primer layer 70 Since the coating workability of may be poor, it may have a coating basis weight within the above range.

Surface resin layer (90)

To improve the printability, surface uniformity, hiding, whiteness, water resistance, processability and semi-non-combustibility of the substrate (S) of the semi-non-flammable wallpaper (1) of the present invention, the glass paper layer (70) ) Can be located on the top surface.

The surface resin layer 90 may be formed by laminating a polyvinyl chloride resin film, or may be formed by sol coating a composition containing a polyvinyl chloride resin.

The surface resin layer 90, for example, may be formed by laminating the polyvinyl chloride resin film in order to implement excellent peel strength.

When the polyvinyl chloride resin film is laminated to form the surface resin layer 90, the primer layer 70 further improves adhesion between the surface resin layer 90 and the glass paper layer 50 may be included. The polyvinyl chloride resin film may be calendered at a temperature of 150-170° C. on the primer layer 70 to be laminated on the glass paper layer 50. The surface resin layer 90 laminated on the glass paper layer 50 is attached in contact with the primer layer 70 to further improve adhesion and flatten the upper portion of the substrate S, thereby providing excellent printing durability and initial printing. Quality and excellent peel strength can be realized.

Specifically, the surface resin layer 90 may be a polyvinyl chloride resin film made of a polyvinyl chloride resin composition including a polyvinyl chloride resin and a plasticizer.

The polyvinyl chloride resin may be contained in an amount of 40 to 70% by weight in the polyvinyl chloride resin composition, and within the above range, there is an effect of excellent durability, processability and self-extinguishing properties of the semi-non-flammable wallpaper. When the polyvinyl chloride resin composition contains less than 40% by weight of the polyvinyl chloride resin, the durability and self-extinguishing properties of the semi-non-combustible wallpaper decrease, and when the polyvinyl chloride resin is included in more than 70% by weight, the processability of the semi-non-combustible wallpaper decreases. , It may include a polyvinyl chloride resin within the above range.

The plasticizer is included to facilitate the manufacture of a polyvinyl chloride resin film by plasticizing the polyvinyl chloride resin, and to facilitate the processability of the semi-non-flammable wallpaper (1) of the present invention, phthalate-based plasticizer, terephthalate-based A plasticizer, a benzoate-based plasticizer, a citrate-based plasticizer, and a phosphate-based plasticizer may be selected from one or more, and more preferably, a non-phthalate-based plasticizer may be used in consideration of eco-friendly.

In addition, the plasticizer may be used in an amount of 25-50 parts by weight or 30-40 parts by weight based on 100 parts by weight of the polyvinyl chloride resin, and when the content of the plasticizer is less than 25 parts by weight, it is not easy to manufacture a polyvinyl chloride resin film. Otherwise, if it exceeds 50 parts by weight, the physical properties of the semi-non-flammable wallpaper may be degraded due to plasticizer migration, and thus can be used within the above range.

The polyvinyl chloride resin composition may further include a filler and a stabilizer, and the type and content thereof are not particularly limited.

The polyvinyl chloride resin composition may specifically include 30-40 parts by weight of a plasticizer, 40-60 parts by weight of a filler, and 2-5 parts by weight of a stabilizer based on 100 parts by weight of the polyvinyl chloride resin.

The thickness of the surface resin layer 90 may be 60-100 μm, or 70-90 μm. When the surface resin layer 90 has a thickness within the above range, excellent surface uniformity, concealability, whiteness, water resistance and semi-noncombustibility can be implemented, and processability is easy.

As another example, when the surface resin layer 90 is formed by sol coating the surface resin layer 90, the polyvinyl chloride resin composition penetrates into the glass paper layer 50 and contacts the adhesive layer 30. As a result, the adhesion between the glass paper layer 50 and the surface resin layer 90 may be further improved, and a peeling phenomenon may be prevented.

Meanwhile, when the surface resin layer 90 is sol coated, the primer layer 70 may be omitted (see FIG. 2 ).

The semi-non-flammable wallpaper 1 of the present invention may further include a printing layer 110 on the upper surface of the surface resin layer 90 in order to improve the aesthetic effect by giving various patterns and colors to the wallpaper (Figs. 3 and 4 Reference).

The method of forming the printing layer 110 is not limited, for example, the printing layer 110 is a conventional acrylic oil-based ink used for wallpaper printing with at least 1 degree, such as 1, 2, and 3 degree printing. It may be formed using the gravure printing ink such as (see Fig. 2). As a specific example, the printing layer 110 is a design layer 111 of 1 or 2 degrees or more formed on the upper surface of the surface resin layer 90 and an anti-pollution treatment of 1 degree formed on the design layer 111 A layer 113 may be included.

The design layer 111 is for realizing a design, and may give a three-dimensional effect as 1 or 2 degrees or more. The design layer 113 includes, for example, a solvent, resin, pigment or pearl pigment, and additives in conventional gravure printing inks, and has low viscosity and adhesion compared to other inks, and easily scratches off the non-caustic ink, and prints It can be evaporated and dried quickly even afterwards.

The stain resistance treatment layer 113 is for improving stain resistance, for example, by further including a fluorine-based acrylic resin in the conventional gravure printing ink to improve stain resistance.

Meanwhile, the semi-non-combustible wallpaper 1 of the present invention may be punched to form a perforation.

In the punching treatment, a fine passage is formed in the surface resin layer 90 using a punching roll including a fine tip, thereby creating a passage through which the air layer between the substrate S and the surface resin layer 90 can escape. If the punching treatment is not performed, the surface bursting phenomenon of the surface resin 90 occurs due to the expansion of residual air between the substrate S and the surface resin layer 90 during the embossing process in the future. I can.

The fine tip may be a circular pin type having a diameter of 0.1-1.0mm, and the shape of the tip of the fine tip is not particularly limited.

For example, a circular pin-type fine tip may be used, and if the diameter of the fine tip exceeds 1.0 mm, the appearance of the semi-non-flammable wallpaper may be deteriorated, and if it is less than 0.1 mm, the air layer is difficult to sufficiently escape and the surface The surface bursting phenomenon of the resin layer 90 may occur.

In addition, the semi-non-flammable wallpaper 1 may be punched to have a perforation of 0.5-3 ea/cm ² . If the amount of perforations per unit area (cm ² ) exceeds 3, the appearance of the semi-non-flammable wallpaper may be deteriorated, and if it is less than 0.5, it is difficult for air to sufficiently escape and the surface of the surface resin layer 90 bursts. I can.

In addition, the semi-nonflammable wallpaper 1 of the present invention may be embossed to give an additional three-dimensional effect.

The method for the embossing treatment is not particularly limited, and as an example, the semi-nonflammable wallpaper may be rolled with an embossing roll.

The method of manufacturing a semi-non-flammable wallpaper (1) according to the present invention comprises the steps of preparing an aluminum foil layer (S1); Forming an adhesive layer on the aluminum foil layer (S3); Forming a glass paper layer on the adhesive layer (S5); laminating a primer layer on the glass paper layer (S7); A method of manufacturing a semi-non-combustible wallpaper comprising the step (S9) of forming a surface resin layer on the glass paper layer, wherein the surface resin layer comprises polyvinyl chloride resin, and the semi-non-combustible wallpaper is KS F ISO 5660- It relates to a method of manufacturing a semi-non-combustible wallpaper in which the total amount of heat emitted by the wallpaper is 8 MJ/m ² or less for 10 minutes after the start of the heating test measured on the basis of 1 (see FIG. 5).

Hereinafter, each step will be described in detail.

Preparing an aluminum foil layer (S1)

The step (S1) may be, for example, preparing an aluminum foil. The aluminum foil layer 10 has been described above, and repeated descriptions are omitted.

Forming an adhesive layer on the aluminum foil layer (S3)

The step (S3) may be, for example, applying an adhesive or laminating an adhesive film on the aluminum foil layer 10.

The adhesive and the adhesive film are described above, and repeated descriptions are omitted.

The method of forming the adhesive and the adhesive film on the aluminum foil layer 10 may be a known coating method, and the step (S3) may be, for example, a step of laminating a hot melt adhesive film.

Forming a glass paper layer on the adhesive layer (S5)

The step (S5) may be, for example, a step of laminating the glass paper layer 50 on the adhesive layer 30 and then melting the adhesive layer to press the glass paper layer.

Specifically, in the case of laminating a hot-melt adhesive film with the adhesive layer 30, the glass paper layer 50 is laminated on the adhesive layer 30, and then heated at 120-130°C using an infrared heater to adhere the hot melt. It may be a step of compressing the glass paper layer by melting the film, and the method of melting the hot melt adhesive film is not limited thereto.

The glass paper layer 50 is described above, and repeated descriptions are omitted.

Laminating a primer layer on the glass paper layer (S7)

The step (S7) may be, for example, a step of forming a primer layer 70 on the glass paper layer 50 to improve the adhesion between the glass paper layer 50 and the surface resin layer 90. .

As an example, the primer layer 70 may be formed by coating a primer on the glass paper layer 50 by a gravure process, but is not limited thereto.

The primer layer 70 is described above, and repeated descriptions are omitted.

Meanwhile, when the surface resin layer 90 is sol-coated, the step (S7) of laminating the primer layer may be omitted.

Forming a surface resin layer over the primer layer (S9)

The step (S9) may be to form a surface resin layer 90 by laminating a polyvinyl chloride film on the upper part of the primer layer 70 or by coating a composition including a polyvinyl chloride resin with a sol.

The step (S9) may be, for example, laminating a polyvinyl chloride resin film made of the polyvinyl chloride resin film composition in order to implement excellent peel strength, and the composition comprising the polyvinyl chloride resin film is As described, repeated descriptions are omitted.

As an example of the step (S9), the surface resin layer 90 may be formed by forming the polyvinyl chloride resin film on the primer layer 70 and then laminating it with a calendar roll at 150-170°C.

The surface resin layer 90 may be adhered to the glass paper layer 50 through the primer layer 70, and adhesion may be improved.

As another example, when the surface resin layer 90 is sol-coated, the glass paper layer 70 is impregnated with a synthetic resin, so that adhesion can be improved without forming the primer layer 70.

The method of manufacturing the semi-nonflammable wallpaper 1 of the present invention may further include forming a printing layer 110 on the upper surface of the surface resin layer 90 (S11).

The step (S11) may be to form the printing layer 110 on the upper surface of the surface resin layer 90 in a tea ceremony. As an example of the step (S11), a design layer 111 of 1 or 2 degrees or more on the upper surface of the surface resin layer 90 and a pollution-resistant treatment layer 113 of 1 degree on the top of the design layer 111 are formed It may be, but is not limited thereto.

The design layer 111 and the stain-resistant treatment layer 113 are described above, and repeated descriptions are omitted.

The method of manufacturing the semi-non-flammable wallpaper 1 may further include a punching process step S13 of punching the semi-non-flammable wallpaper 1 after the step (S11).

In the step (S13), for example, after punching using a punching roll including a fine tip of a circular pin type having a diameter of 0.1-1.0mm, put it in an oven at 100-170° C. and the number of surfaces with the substrate (S). It may be a step of removing air between the stratum 90.

At this time, the semi-non-flammable wallpaper 1 may be punched to have a perforation of 0.5-3 ea/cm ² .

The method of manufacturing the semi-non-flammable wallpaper 1 may further include an embossing step (S15) after step (S13).

The step (S15) may be, for example, rolling the semi-non-flammable wallpaper 1 with an emboss roll, but is not limited thereto.

When the semi-non-flammable wallpaper 1 of the present invention further includes a printing layer 110 on the upper surface of the surface resin layer 90, excellent design can be implemented.

In addition, the semi-non-flammable wallpaper 1 of the present invention can implement excellent printing durability, initial printing quality, and a peel strength of 0.3kgf/inch or more by including the surface resin layer 90.

The printing durability was evaluated by measuring the number of rubs when the print was peeled off after rubbing at an average speed of 10 cm/sec using a cotton cloth moistened with water. The initial print quality was evaluated.

The peeling strength includes an aluminum foil layer 10 and a glass paper layer 50 using a high-speed peeling machine (ChemInstruments, AR-1000) prepared as a wallpaper with a width of 2.54 cm (1 inch) and a length of 15 cm. The substrate (S) is attached to the moving part of the high-speed peeler in the horizontal direction, and the surface resin layer (90) is fixed to the fixing part tongs with a sensor capable of measuring the strength, and then in the horizontal direction at a speed of 300 cm/min. While moving the moving part, the strength applied to both portions of the surface resin layer 90 and the substrate S was measured by time, and the average value of the measured peel strength was calculated and evaluated.

Wallpaper (1) of the present invention is an example, the peeling strength may be 0.3-1.0kgf/inch, but is not limited thereto.

[ Example ]

<Example 1>

(1) Preparation of base material

A conventional hot melt adhesive film having a thickness of 20 μm is laminated on top of a conventional aluminum foil layer having a thickness of 0.017 mm, and a glass paper layer having a basis weight of 32 g/m ² and a thickness of 0.14 mm (Korea Carbon Company) was laminated, and then the hot-melt adhesive film was melted by heating at 130° C. using an infrared heater, and then pressed with a roller to prepare a substrate.

(2) primer layer formation

Then, a primer (H&C) was coated on the glass paper layer 50 by a gravure process to form a primer layer having a coating basis weight of 7 g/m ² .

(3) Preparation of surface resin layer

Subsequently, a polyvinyl chloride resin (LG Chemical, LS100) 100 parts by weight of a plasticizer (LG Chemical, GL520) 35 parts by weight, a filler 50 parts by weight, and a stabilizer 3 parts by weight on the upper surface of the glass paper layer. After laminating the vinyl resin film, it was laminated with a 160°C calendar roll to form a surface resin layer having a thickness of 180 μm.

(4) Formation of printing layer and embossing layer

A printing layer was formed on the top of the surface resin layer using conventional gravure printing ink (Hanyang Ink Co., Ltd.). Thereafter, punching was performed to have a perforation of 1 ea/cm ² using a punching roll including a circular pintime fine tip with a diameter of 0.2 mm, and the surface temperature of the surface resin layer was raised to 160°C with an IR heater. The wallpaper of Example 1 was prepared by forming an emboss layer through a known method of pressing with an emboss roll.

<Example 2>

In Example 1, the wallpaper of Example 2 was prepared in the same manner as in Example 1, except that (2) the primer layer formation was omitted and the surface resin layer was prepared by the following method.

(3) Preparation of surface resin layer

A composition comprising 65 parts by weight of a plasticizer (LG Chemical, GL500), 50 parts by weight of a filler, and 3 parts by weight of a stabilizer was sol-coated with a knife coater on the upper surface of the glass paper layer by 100 parts by weight of a polyvinyl chloride resin (LG Chemical, PB900) A surface resin layer having a thickness of 180 μm was formed.

[Comparative Example]

< Comparative example 1>

The semi-non-flammable wallpaper of Comparative Example 1 was prepared in the same manner as in Example 1, except that a non-woven fabric made of polyester (Technocell) having a thickness of 0.2 mm and a basis weight of 100 g/m ² was used as a substrate.

<Comparative Example 2>

The semi-non-flammable wallpaper of Comparative Example 2 was prepared in the same manner as in Example 1, except that only an aluminum foil layer having a thickness of 5 μm was used as a substrate.

<Comparative Example 3>

The semi-nonflammable wallpaper of Comparative Example 3 was prepared in the same manner as in Example 1, except that only a glass paper layer (Korea Carbon Co., Ltd.) having a basis weight of 50 g/m ² and a thickness of 0.4 mm was used as a substrate.

<Comparative Example 4>

(1) Preparation of base material

It was prepared in the same manner as in Example 1.

(2) primer layer formation

Did not perform.

(3) Preparation of surface resin layer

A composition containing synthetic resin on the upper surface of the glass paper layer is sol-coated using T-die extrusion to form a surface resin layer having a thickness of 80 μm, and then a primer (H&C) is coated on the top of the surface resin layer by a gravure process. Thus, a 3 μm-thick surface primer layer was formed.

Here, the composition comprising the synthetic resin includes 50% by weight of metallocene polyethylene, 45% by weight of ethylene-vinyl acetate copolymer, 4% by weight of styrene-butadiene rubber, and 1% by weight of maleic anhydride.

(4) Formation of printing layer and embossing layer

A printing layer was formed on the top of the surface resin layer using conventional gravure printing ink (Hanyang Ink Co., Ltd.). Thereafter, punching was performed to have a perforation of 1 ea/cm ² using a punching roll including a circular pintime fine tip with a diameter of 1.0 mm, and the surface temperature of the surface resin layer was raised to 160°C with an IR heater. After removing the air between the substrate and the surface resin layer, an embossed layer was formed through a known method of compressing with an embossing roll to prepare a semi-nonflammable wallpaper of Comparative Example 4.

Here, the printing layer further includes a surface treatment layer of 1 degree below the design layer of 1 degree or 2 degrees or more.

<Comparative Example 5>

The semi-nonflammable wallpaper of Comparative Example 5 was prepared in the same manner as in Example 1, except that (2) formation of a primer layer and (3) preparation of a surface resin layer were not performed.

[Test Example]

<heat release rate>

-The heat release rate was measured by the following method, the test was carried out three times, and the heating strength was 50 kW/m ² .

A) The radiant heat of the cone heater (Festek International, Cone Calorimeter-0907) was set and maintained at 50kW/m ² ±1kW/m ² and the discharge flow rate was 0.024m ³ /s±0.002m ³ /s.

B) The specimen (semi-non-flammable wallpaper) and the specimen holder were placed on the mass measuring device.

C) After removing the radiant heat blocking device, it was heated for 10 minutes.

D) The maximum heat release rate and total heat release were measured.

-Semi-incombustible performance standard: After the start of the heating test in accordance with KS F ISO 5660-1, the total heat dissipation of the wallpaper is 8 MJ/m ² or less for 10 minutes, and the maximum heat release rate for 10 minutes is 200 kW/m ² continuously for 10 seconds or more. It was not exceeded, and it was judged that the quasi-noncombustibility was satisfied when there were no cracks, holes, or melting, which were harmful to fire through the test specimen.

<Initial print quality>

The initial print quality of the semi-non-combustible wallpaper was evaluated as "bad" when printing on the semi-non-combustible wallpaper was impossible or not clear through visual observation, and if the printing was clear, it was evaluated as "good" and is shown in Table 1. .

<Print durability>

The printing durability of the semi-non-combustible wallpaper of Examples 1 and 2 and Comparative Examples 1 to 5 was measured by measuring the number of rubbing when the print was peeled off after rubbing at an average speed of 10 cm/sec using a cotton cloth moistened with water. If the print peeled off when rubbed 3 times, it was evaluated as "bad", if the print peeled off when rubbed 4 to 7 times, it was evaluated as "normal", and the print peeled off or did not peel off when rubbed 8 to 10 times. In the case, it was evaluated as "good" and shown in Table 1.

The larger the number of rubs at which the print begins to peel off, the better the print durability.

<Peeling strength>

The wallpaper of Examples 1 and 2 and Comparative Examples 1 to 5 was prepared as a specimen with a width of 2.54 cm (1 inch) and a length of 15 cm, and an aluminum foil layer and a glass paper layer using a high-speed peeling machine (ChemInstruments, AR-1000) The base material including the is attached to the moving part of the high-speed peeler in the horizontal direction, and the surface resin layer is fixed to the fixing part tongs with a sensor capable of measuring the strength, and then moving the moving part in the horizontal direction at a speed of 300 cm/min. The strength applied to both portions of the surface resin layer and the substrate was measured by time, and the average value of the measured peel strength was calculated and shown in Table 1.

The higher the peel strength, the better, and in the present invention, when the peel strength value is 0.3kgf/inch or more, the peel strength is evaluated as excellent.

Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 materials Aluminum foil layer ○ ○ Non-woven ○ X ○ ○ Adhesive layer ○ ○ X X X ○ ○ Glass paper layer ○ ○ X X ○ ○ ○ Primer layer ○ X ○ ○ ○ X X Surface resin layer PVC film PVC sol PVC film PVC film PVC film Synthetic resin sol X Properties Heat release rate Total radiated heat (MJ/m ² ) 5 6 9 3.5 3.5 6 2 Time (seconds) for the maximum heat release rate to continuously exceed 200 kW/m ² 0 0 0 0 0 0 0 Test specimen damage (crack, hole, melting) evaluation No damage No damage Substrate damage (melting) Substrate damage (crack) Substrate damage (cracks and holes) No damage No damage Initial print quality good good good good good good Bad Printing durability
(Number of rubs) good
(10) good
(10) good
(10) good
(10) good
(10) good
(8) Bad
(2) Peel strength (kgf/inch) 0.4 0.6 0.4 0.1 or less - 0.5 -

As a result of the heat release rate test for the wallpaper of Examples 1 to 2, the total heat release rate was 8 MJ/m ² or less, the maximum heat release rate did not exceed 200 kW/m ² continuously for 10 seconds or more, and fire-burning harmful cracks penetrating the test body , There were no holes and melting. In addition, as a result of gas hazard test, T _rat was 9 minutes or longer. The wallpaper of Examples 1 to 2 satisfies all of the above conditions and satisfies semi-incombustibility, and by including PVC resin as the surface resin layer, printing was clear and the initial print quality was excellent, and a cloth moistened with water was used. It was confirmed that the printing durability was excellent as there was no print peeling even after rubbing 10 times. The peel strength was excellent with a peel strength value of 0.3kgf/inch or more.

In addition, it was confirmed that Example 2 in which the PVC resin composition was sol-coated as a surface resin layer exhibited excellent peel strength even without forming a primer layer.

On the other hand, the semi-non-combustible wallpaper of Comparative Example 1 used a non-woven fabric as a base material, and as a result of the heat release rate test, the total radiated heat exceeded ⁸ MJ/m ² , and there were cracks, holes, and melting harmful to fire through the test sample. I was not satisfied. However, the semi-non-combustible wallpaper of Comparative Example 1 had excellent initial print quality because the surface of the substrate including the surface resin layer formed by laminating a polyvinyl chloride resin film was flat, and was rubbed 10 times using a cloth moistened with water. Even after printing peeling was not observed, it was confirmed that printing durability was excellent.

In addition, the semi-non-combustible wallpaper of Comparative Example 2 used only an aluminum foil layer as a base material, and the semi-non-combustible wallpaper of Comparative Example 3 used only a glass paper layer as a base material. The presence of melting did not satisfy quasi-incombustibility, but the surface of the substrate including the surface resin layer formed by laminating the polyvinyl chloride resin film was flat, so the initial print quality was excellent, and 10 times using a cloth moistened with water. Even after rubbing, printing peeling was not observed, and it was confirmed that printing durability was excellent.

In particular, in Comparative Example 3, only the glass paper layer was used as the base material, and the durability was lowered, the strength was lowered, and the glass paper layer easily collapsed, so that the peel strength from the surface resin layer could not be measured.

On the other hand, the semi-nonflammable wallpaper of Comparative Example 4 included a surface resin layer formed of a synthetic resin composed of a polyolefin resin, an ethylene-vinyl acetate copolymer resin, and an elastomer, and the total heat emission was 8 MJ/m ² or less. There were no harmful cracks, holes, and melting through fire protection, and the peeling strength was excellent, and the initial printing quality was excellent by including a surface primer layer on the top of the surface resin layer, but the surface resin layer formed of polyvinyl chloride resin was included. It was confirmed that the printing durability was lowered compared to Examples 1 and 2.

In addition, the semi-nonflammable wallpaper of Comparative Example 5 did not contain a surface resin layer, so the total heat emission did not exceed ⁸ MJ/m ² as a result of the heat emission rate test, but the printing was not clear due to the voids in the glass paper layer, so the initial print quality was poor. It was degraded, and printing peeling was observed when rubbing twice with a cloth moistened with water, indicating that printing durability was deteriorated. In addition, since the surface resin layer was not formed, the peel strength could not be measured.

1: semi-nonflammable wallpaper 10: aluminum foil layer
30: adhesive layer 50: glass paper layer
70: primer layer 90: surface resin layer
110: printing layer 111: design layer
113: stain resistant treatment layer S: substrate

Claims (16)

From the bottom to the top, the aluminum foil layer 10; Adhesive layer 30; A substrate (S) including a glass paper layer 50; And a semi-non-combustible wallpaper comprising a surface resin layer 90,
The surface resin layer 90 includes a polyvinyl chloride resin,
The semi-non-combustible wallpaper is a semi-non-combustible wallpaper that is less than 8 MJ / m ² the total heat emission of the wallpaper 10 minutes after the start of the heating test measured based on KS F ISO 5660-1. The method of claim 1,
The semi-non-combustible wallpaper is a semi-non-combustible wallpaper that does not exceed 200 kW / m ² continuously for 10 minutes or more for 10 minutes after the start of the heating test measured based on the KS F ISO 5660-1. The method of claim 1,
The semi-non-combustible wallpaper is [Condition 1] T _rat ≥ 9 (min) semi-noncombustible wallpaper.
(However, in the above [Condition 1], T _rat means the mean behavioral stop time of experimental rats according to the gas hazard test (KS F 2271).) The method of claim 1,
The aluminum foil layer 10 is a semi-non-combustible wallpaper that has a thickness of 0.005-0.030mm. The method of claim 1,
The adhesive layer 30 is a semi-non-combustible wallpaper that has a thickness of 5-30㎛. The method of claim 1,
The glass paper layer 50 has a basis weight of 20-40 g/m ² and a thickness of 0.1-0.4 mm. The method of claim 1,
Semi-non-flammable wallpaper further comprising a primer layer 70 having a basis weight of 2-10g/m ² on the substrate (S). The method of claim 1,
The surface resin layer 90 is a semi-non-combustible wallpaper that has a thickness of 150-250μm. The method of claim 1,
The semi-non-combustible wallpaper has a peeling strength of 0.3-1.0 kgf/inch at which the surface resin layer 90 is split by peeling off both ends of the base material (S) and the surface resin layer 90 at a rate of 300 cm/min. Semi-incombustible wallpaper. The method of claim 1,
The semi-non-combustible wallpaper is a semi-non-combustible wallpaper having a printing durability of 8 to 10 times when rubbed at an average speed of 10 cm/sec. According to claim 1
The semi-non-combustible wallpaper further comprises a printing layer 110 on the surface resin layer (90). The method of claim 1,
The semi-non-combustible wallpaper is a semi-non-combustible wallpaper that is punched. Preparing an aluminum foil layer (S1);
Forming an adhesive layer on the aluminum foil layer (S3);
Forming a glass paper layer on the adhesive layer (S5); And
A method of manufacturing a semi-non-combustible wallpaper comprising the step (S9) of forming a surface resin layer on the glass paper layer,
The surface resin layer includes a polyvinyl chloride resin,
The semi-non-combustible wallpaper is a method of producing a semi-non-combustible wallpaper that is 8 MJ/m ² or less in total heat emission of the wallpaper for 10 minutes after the start of the heating test measured based on KS F ISO 5660-1. The method of claim 13,
Laminating a primer layer after the step S5 (S7); The method of manufacturing a semi-non-combustible wallpaper further comprising a. The method of claim 13,
The method of manufacturing a semi-non-flammable wallpaper further comprising the step (S11) of forming a printing layer on the surface resin layer after the step S9. The method of claim 15,
The method of manufacturing a semi-non-combustible wallpaper further comprising a step (S13) of punching the semi-non-combustible wallpaper after the step S11.

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