WO2007114560A1

WO2007114560A1 - Fabric sheet for banner having retroreflective properties

Info

Publication number: WO2007114560A1
Application number: PCT/KR2007/000697
Authority: WO
Inventors: Hyung-Gon Kim; Kwan-Seung Ko
Original assignee: Lg Chem, Ltd.
Priority date: 2006-04-04
Filing date: 2007-02-08
Publication date: 2007-10-11

Abstract

Disclosed herein is a fabric sheet for a banner having retroreflective properties, which has high visibility at night, excellent digital printability, and excellent strength. The fabric sheet includes a base sheet; an adhesive layer, a metal reflective layer, a focal resin layer, a glass bead layer, a glass bead fixing resin layer and an uppermost layer sequentially formed on the base sheet. According to the fabric sheet for a banner of the present invention, visibility at night is high due to high retroreflective properties caused by glass beads, metal layers, and the like, it is possible to print the original, displayed on a computer, unchanged in the case where the fabric sheet is used for a digital printing process because the base sheet is formed of textile and the uppermost resin layer is formed of a vinylchloride resin composition having excellent printability and excellent atmospheric corrosion resistance, and strength is high.

Description

FABRIC SHEET FORBANNERHAVING RETROREFLECTIVE

PROPERTIES

Technical Field

[1] The present invention relates to a fabric sheet for a banner having retroreflective properties, and, more particularly, to a fabric sheet for a banner having retroreflective properties, which has high visibility at night, excellent digital printability, and excellent tensile or tear strength due to the retroreflective properties, and a method of manufacturing the same.

Background Art

[2] Generally, a banner is manufactured by printing desired letters or images on woven fabrics. The banner is an effective medium for intense advertising for a short period of time because it is cheap and easily mounted. Further, the banner is frequently used as an advertising medium for a short time because an idea is easily expressed on the banner using a solvent digital printing method etc. However, the conventional banners have a disadvantage in that almost no advertising effect can be expected at night because it is not easily discriminated at night, that is, visibility at night is low.

[3] Recently, since many people are active not only during the day but also at night, it is necessary to advertise to them even at night using an advertising medium having high visibility at night, particularly using banners, which are cheap compared to other advertising media. However, the commonly used banner has a problem in that its visibility at night is low.

[4] Korean Unexamined Patent Publication No. 2004-9485 discloses a banner in which a fabric sheet such as cotton, polyester, or another non- woven fabric is provided in order to dynamically display a specific design expressed in the banner, such as a photograph, a drawing, a graphic image or the like, and to allow a user to easily see the design at night or at a dark place, and in which an adhesive pigment, such as a binder and a pigment having various colors and a reflective material such as silica, metal pearl or pearl, are printed on the banner. However, there is a disadvantage in that the reflective material is not suitable for digital printing using a printer.

[5] Korean Unexamined Patent Publication No. 2004-91334 discloses a method of manufacturing a light-emitting banner. However, the method has disadvantages in that manufacturing processes are very complicated, visibility at night is insufficient because reflective materials are limitedly distributed only in a printing portion, digital printing cannot be used, and an image cannot be formed to be as similar to the original image as can an image produced through digital printing using a commonly used printer.

[6] Korean Unexamined Patent Publication No. 2005-6955 discloses a method of manufacturing a fabric sheet for a banner, which is distinguishable at night by applying luminescent materials thereon. However, the method has disadvantages in that, although the manufacturing method is simple, it is difficult to display designs or drawings using a general printing method because luminescent materials are applied on the top surface of the banner.

[7] Korean Unexamined Patent Publication No. 2003-7989 discloses a method of manufacturing a banner having excellent visibility at night and capable of being printed. Here, a method of improving printability by printing designs on a glass bead layer applied on a transfer paper and then transferring the designs to the object to be printed is disclosed. However, even in this case, the method of manufacturing a banner has disadvantages in that the printing method is very complicated, manufacturing costs are high, and the printing layer is not clearly displayed due to the glass bead layer. Further, the method has a disadvantage in that visibility at night is not greatly improved, because a mirror reflection surface does not exist, even though the glass bead layer exists.

[8] Korean Unexamined Utility Model Publication No. 2000-10078 discloses a banner which can display an advertising message using a light-emitting material, particularly a banner which can be seen well even if the banner is mounted outdoors, in which the advertising message, such as letters or images, is displayed using light-emitting material such as a luminous paint or a light-emitting paint, so that light is emitted from the display unit itself. However, it is difficult to produce this banner using digital printing.

[9] Korean Unexamined Patent Publication No. 2004-9618 discloses a lens-embedded retroreflective sheet including a surface film layer, a lens fixing resin layer, a minute sphere lens layer, a focal resin layer, a metal reflective layer, an adhesive layer and a release paper in that order. The retroreflective sheet is used as a substrate in a road sign board or a traffic guide board. However, the retroreflective sheet having the above structure cannot be used for a banner. Disclosure of Invention Technical Problem

[10] Accordingly, the present invention has been made in order to solve the above problems occurring in the prior art, and an object of the present invention is to provide a fabric sheet for a banner having retroreflective properties, which has high visibility at night and excellent digital printability, and a method of manufacturing the same.

[11] Another object of the present invention is to provide a fabric sheet for a banner having retroreflective properties, which has high visibility at night and excellent tensile or tear strength, and a method of manufacturing the same.

[12] The above objects can be accomplished by forming a retroreflective layer and a resin layer having excellent printability on a base sheet made of a textile. Technical Solution

[13] In order to accomplish the above objects, the present invention provides a fabric sheet for a banner having retroreflective properties, including a base sheet; and an adhesive layer, a metal reflective layer, a focal resin layer, a glass bead layer, a glass bead fixing resin layer and an uppermost layer sequentially formed on one side or both sides of the base sheet.

[14] In the fabric sheet for a banner having retroreflective properties according to the present invention, the base sheet is formed of textile having a high strength, and the uppermost resin layer is formed of a vinylchloride resin composition having high printability.

[15] Further, the present invention provides a method of manufacturing a fabric sheet for a banner having retroreflective properties, including the steps of forming an uppermost resin layer composed of a vinylchloride resin composition on a silicon thin film on a carrier film or a carrier paper; forming a glass bead fixing resin layer on the uppermost resin layer; adhering glass beads on the glass bead fixing resin layer by freely dropping the glass beads; forming a focal resin layer on the glass beads; forming a metal reflective layer on the focal resin layer; applying an adhesive on the metal reflective layer to form an adhesive layer; and adhering a base sheet to the adhesive layer. Here, in order to impart retroreflective properties to both sides of the base sheet, the layers ranging from the uppermost layer to the adhesive layer may be formed on another carrier film, and then the other side of the base sheet may be adhered thereto using the above manufacturing method.

[16] In the fabric sheet for a banner having retroreflective properties according to the present invention, the focal resin layer and the glass bead fixing resin layer may be formed into a resin composition layer.

Advantageous Effects

[17] According to the fabric sheet for a banner of the present invention, visibility at night is high due to high retroreflective properties caused by glass beads, metal layers, and the like, it is possible to print the original, displayed on a computer, unchanged in the case where the fabric sheet is used for a digital printing process because the base sheet is formed of textile, and the uppermost resin layer is formed of a vinylchloride resin composition having excellent printability and excellent atmospheric corrosion resistance, and strength is high. [18] Further, according to the fabric sheet for a banner of the present invention, retroreflective properties can be imparted to both sides of the base sheet, thereby increasing the advertising effect at night.

Brief Description of the Drawings

[19] The above and other objects, features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[20] FIG. 1 is a schematic sectional view showing a fabric sheet for a banner having retroreflective properties according to an embodiment of the present invention; and

[21] FIG. 2 is a schematic sectional view showing a fabric sheet for a banner having retroreflective properties according to another embodiment of the present invention. Best Mode for Carrying Out the Invention

[22] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[23] Referring to FIG. 1, a fabric sheet for a banner having retroreflective properties according to an embodiment of the present invention has a structure, in which an adhesive layer 120, a metal reflective layer 130, a focal resin layer 140, a glass bead adhering layer 160, a glass bead layer 150, and an uppermost resin layer 170 are sequentially layered on a base sheet 110.

[24] In the present invention, the base sheet 110 is a lowermost layer of the fabric sheet for a banner according to the present invention, and a textile commonly used for manufacturing a conventional banner may be used as the base sheet 110. A conventional retroreflective sheet formed using glass beads and a metal reflective layer has low tear strength or tensile strength because a synthetic resin or a synthetic film is used as a base sheet, and thus cannot be used to manufacture a banner. However, in the present invention, unlike the conventional retroreflective sheet, the above problems, such as the low tear strength or the low tensile strength in the conventional retroreflective sheet, have been overcome.

[25] The adhesive layer 120 serves to adhere and fix constituents including glass beads

150 placed thereon. The adhesive layer 120 may be formed of a solvent adhesive composed of a polyether resin, a polyester resin, a polyurethane resin or an epoxy resin. The adhesive layer 120 may be formed to a thickness of 30 to 80 D. When the thickness of the adhesive layer 120 is below 30 D, there is a problem in that the constituents including the glass beads fixed thereon cannot be sufficiently fixed. In contrast, when the thickness of the adhesive layer 120 is above 80 D, there is a problem in that the physical properties of the fabric sheet for a banner are deteriorated because the total thickness of the fabric sheet for a banner is increased due to the increase in thickness of the adhesive layer 120.

[26] The metal reflective material 130 formed on the adhesive layer 120 serves to reflect light refracted through the glass beads and return the light toward a light source so as to increase visibility at night. The metal reflective layer 130 is a thin film layer composed of one or more metals selected from the group consisting of gold, silver, aluminum, platinum, nickel and chromium. This metal reflective layer 130 may be formed using commonly known metal coating methods, such as a vacuum deposition method, a sputtering method, and an electron beam deposition method.

[27] The focal resin layer 140 may be formed on the metal reflective layer 130. The focal resin layer 140 is coated to a thickness corresponding to a focal length of light refracted through the glass beads, and located between the metal reflective layer and the glass bead layer. The light having passed through the focal resin layer 140 is reflected by the metal reflective layer 130, passes through the focal resin layer 140 again, and is then introduced into the glass beads. Accordingly, the focal resin layer 140 is interposed between the glass beads 150 and the metal reflective layer 130, and thus serves to increase retroreflective properties. It is preferred that the focal resin layer 140 be formed in order to obtain sufficient retroreflective properties of a coefficient of retroreflection of 30 Cd/lx/m or more. It preferred that the thickness of the focal resin layer 140 be about 1/4 of the diameter of the glass bead 150. The focal resin layer 140 is formed of a transparent resin, preferably a urethane resin cross-linked with a copolymer of acrylic polyol with acrylate, methacrylate, butylacrylate, ethylacrylate or vinylacetate and polyfunctional isocyanate. The "coefficient of retroreflective luminous intensity" is defined as a ratio {R=I/E, (Cd/lx)} of light intensity {I, (cd)} in an observation direction to illumination intensity {E, (Ix) } of a retroreflector that is oriented perpendicular to incident light. The "coefficient of retroreflection" is defined as a ratio {RA=R/A, (Cd/lx/D)} of the coefficient of retroreflective luminous intensity per unit area. Generally, the retroreflective properties are represented by the coefficient of retroreflection. The coefficient of retroreflection is used as a standard for the retroreflective properties of a retroreflector in ASTM808, ASTM4956 and the like. That is, the coefficient of retroreflection is a coefficient having no units, but is used here with reference to units in order to enable the meaning thereof to be easily understood.

[28] The glass bead fixing resin layer 160 serves to embed and fix the glass beads. The glass bead fixing resin layer may be formed of a polyester urethane resin, or a two- pack thermosetting resin cross-linked with a copolymer of acrylic polyol with acrylate, methacrylate, butylacrylate, ethylacrylate or vinylacetate and polyfunctional isocyanate. The polyester urethane resin is a urethane resin formed by reacting polyester polyol, having a glass transition temperature of 0°C or lower, with poly- functional isocyanate.

[29] It is preferred that the glass bead fixing resin layer 160 be formed to a thickness of

20 to 50 D. When the thickness of the glass bead fixing resin layer 160 is below 20 D, the glass beads can be separated therefrom because the adhesive strength to the glass beads, having an average particle diameter of 30 to 70 D, is decreased. In contrast, when the thickness of the glass bead fixing resin layer 160 is above 50 D, most of the glass beads are covered therewith, so that the area in which the metal reflective layer is coated with the focal resin layer is decreased, thereby decreasing the retroreflective properties.

[30] The glass beads 150, which are partially embedded and fixed in the glass bead fixing resin layer 160, serve to impart the retroreflective properties to the fabric sheet for a banner according to the present invention, and can be formed by freely dropping the glass beads into the glass bead fixing resin layer 160 and fixing them therein. The glass beads 150 serve to refract light passing through the fabric sheet and focus the light on the metal reflective layer 130. The glass beads are fabricated by forming glass into spherical beads having a diameter of 30 to 70 D. It is preferred that the glass beads, which are comparatively monodispersed, be evenly and uniformly distributed in the glass bead fixing resin layer 160, and particularly that they be distributed to form a single layer having a predetermined thickness. The diameter of the glass beads is limited within the range of 30 to 70 Dm, but the present invention is not limited thereto. It can be understood that the object of the present invention can be accomplished even though glass beads having various diameters are used. However, when the diameter of the glass beads is excessively small or large, there are problems in that the glass bead fixing resin layer 160 is not uniformly formed, or the retroreflective properties are decreased.

[31] The uppermost resin layer 170, which is a surface layer, is formed on the glass bead fixing resin layer 160 in order to maximize digital printability. The uppermost resin layer 170 is a layer formed to increase digital printability when designs are printed on the surface thereof using a solvent digital printing method. The uppermost resin layer 170 is formed of a polyvinylchloride resin. The uppermost resin layer 170 is formed by coating a polyester carrier film with a coating composition for forming the uppermost resin layer, in which polyvinylchloride sol is combined with an additive for improving printability and atmospheric corrosion resistance. The polyvinylchloride resin is a resin frequently used in a billboard or a signboard that must be digitally printed. The fact that the polyvinylchloride resin is suitable for performing digital printing is commonly known. It is preferred that the uppermost resin layer 170 be formed to a thickness of 20 to 50 D. When the thickness of the uppermost resin layer 170 is below 20 D, there is a problem in that the glass beads 150 therein are easily exposed to the exterior due to physical damages. In contrast, when the thickness of the uppermost resin layer 170 is above 50 D, there is a problem in that the retroreflective properties are decreased due to low transmissivity.

[32] When the uppermost resin layer 170, made of the polyvinylchloride, is formed, typical plasticizers may be added to a coating composition for forming the uppermost resin layer in order to allow the polyvinylchloride to maximize the digital printability. The plasticizers, which can be used in the uppermost resin layer, include phthalic acid plasticizers such as Di-butyl-phthalate (DBP), Di-2-ethylhexyl phthalate (DOP) and the like, or trimellitic acid plasticizers such as Tri-ethylhexyl trimellitate (TOTM), Tri- isononyl trimellitate (TINTM) and the like.

[33] It is preferred that the uppermost resin layer have high atmospheric corrosion resistance because it is located at the outermost surface of the completed banner. For this purpose, a light stabilizer may be included. A commonly used liquid ultraviolet absorber, such as Tinuvin 123, may be used as the light stabilizer. The amount of the used light stabilizer is from 2 to 10 parts by weight based on 100 parts by weight of the coating composition for forming the uppermost resin layer. When the amount of the used light stabilizer is below 2 parts by weight based on the total parts by weight of the coating composition for forming the uppermost resin layer, there is a problem in that the effectiveness of the light stabilizer is low. In contrast, when the amount of the used light stabilizer is above 10 parts by weight based on the total parts by weight of the coating composition for forming the uppermost resin layer, there is a problem in that it is difficult to mix the light stabilizer with the resin. Further, it is preferred that the uppermost resin layer have high atmospheric corrosion resistance because it is located at the outermost surface of the completed banner. For this purpose, a heat stabilizer may be included. An aliphatic acid metal salt containing barium, calcium, zinc or the like, preferably barium stearate or zinc stearate, may be used as the heat stabilizer. The amount of the added light stabilizer is from 3 to 10 parts by weight based on 100 parts by weight of the coating composition for forming the uppermost resin layer. When the amount of the light stabilizer that is used is below 3 parts by weight based on the total parts by weight of the coating composition for forming the uppermost resin layer, there is a problem in that the effectiveness of the heat stabilizer is low. In contrast, when the amount of the light stabilizer that is used is above 10 parts by weight based on the total parts by weight of the coating composition for forming the uppermost resin layer, there is a problem in that it is difficult to mix the heat stabilizer with the resin.

[34] A fabric sheet for a banner having retroreflective properties according to the present invention (referring to FIG. 1) can be manufactured through the steps of forming an uppermost resin layer 170, composed of a vinylchloride resin composition, on a silicon thin film on a carrier film or a carrier paper; forming a glass bead fixing resin layer 160 on the uppermost resin layer; embedding and adhering glass beads to a depth of 1/3 to 2/3 of the diameters thereof in the glass bead fixing resin layer by freely dropping the glass beads 150; forming a focal resin layer 140 on the glass beads; forming a metal reflective layer 130 on the focal resin layer using a vacuum deposition method, etc.; applying an adhesive 120 on the metal reflective layer to form an adhesive layer; adhering a base sheet 110 to the adhesive layer; and releasing and removing the carrier film.

[35] Referring to FlG. 2, a fabric sheet for a banner having retroreflective properties according to another embodiment of the present invention has a structure in which an adhesive layer 120, a metal reflective layer 130, a resin composition layer 180, in which glass beads 150 are completely embedded, and an uppermost resin layer 170 are sequentially layered on a base sheet 110.

[36] The fabric sheet for a banner having retroreflective properties having the above structure according to the present invention (referring to FlG. 2) can be manufactured through the steps of forming the focal resin layer 140 and the glass bead fixing resin layer 160 into a resin composition; mixing and combining glass beads 150 with the resin composition; and applying the resin composition including the glass beads on the uppermost resin layer to have a structure in which the glass beads are entirely embedded in the resin composition layer 180.

[37] The structure in which the glass beads are entirely embedded in the resin composition layer 180 can be manufactured through the steps of mixing a urethane resin cross-linked with a copolymer of acrylic polyol with acrylate, methacrylate, buty- lacrylate, ethylacrylate or vinylacetate and polyfunctional isocyanate with the glass beads such that the mixing ratio of the urethane resin to the glass beads is 1: 1.2 by weight; stirring the mixture; and applying the stirred mixture on the uppermost resin layer. Further, the structure has an advantage in that the focal resin layer 140, the glass bead layer 150 and the glass bead fixing resin layer 160 can be formed into the resin composition layer 180 using only one process, without greatly decreasing retroreflective properties. The resin composition layer 180 formed on the metal reflective layer 130 serves to fix the glass beads distributed therein, and serves as the focal resin layer. The glass beads are entirely embedded and fixed in the resin composition layer 180.

[38] Hereinafter, preferred Examples will be described in detail.

[39] A better understanding of the present invention may be obtained through the following examples which are set forth to illustrate, but are not to be construed as the limit of the present invention.

[40] Example 1

[41] 40 parts by weight of dibutylphthalate, 5 parts by weight of Tinuvin 123 and 5 parts by weight of barium stearate were mixed with polyvinylchloride sol to form a mixture, and the mixture was then diluted with ethylacetate to prepare a coating composition for forming an uppermost resin layer having a viscosity of 2000 cps. Next, the coating composition was applied on a polyester carrier film having a thickness of 100 D, and was then dried at a temperature of 100°C. The thickness of the dried uppermost resin layer was 50 D.

[42] Subsequently, a two-pack thermosetting resin, which is crosslinked with polyester polyol and polyfunctional isocyanate, was applied on the uppermost resin layer to form a glass bead fixing resin layer. Next, glass beads having an average diameter of 60 D were freely dropped on the glass bead fixing resin layer, and were dried and fixed at a temperature of 120°C. The thickness of the dried glass bead fixing resin layer was 40 D. Next, a two-pack thermosetting resin, which is cross-linked with a copolymer of acrylic polyol with acrylate, methacrylate, butylacrylate, ethylacrylate or vinylacetate and polyfunctional isocyanate, was applied on the glass bead fixing resin layer, and was then dried at a temperature of 120°C to form a focal resin layer. Then, an aluminum thin film was formed on the focal resin layer to form a metal reflective layer. Subsequently, a polyester adhesive was applied to a thickness of 50 D on the metal reflective layer to form an adhesive layer, and a textile was then adhered on the adhesive layer, thereby manufacturing a fabric sheet for a banner having retroreflective properties according to the present invention.

[43] Example 2

[44] As in Example 1, a coating composition for forming an uppermost resin layer was applied on a polyester carrier film having a thickness of 100 D. Then, a two-pack thermosetting resin, which is cross-linked with a copolymer of acrylic polyol with acrylate, methacrylate, butylacrylate, ethylacrylate or vinylacetate and polyfunctional isocyanate, was combined with glass beads to have a viscosity of 2000 cps, applied on the uppermost resin layer, and then dried at a temperature of 120°C to form a resin composition layer. Subsequently, as in Example 1, a metal reflective layer, an adhesive layer and a textile layer were sequentially formed on the resin composition layer, thereby manufacturing a fabric sheet for a banner having retroreflective properties according to the present invention.

[45] In the fabric sheet for a banner according to Examples 1 and 2 of the present invention, it was found that visibility at night is high because the banner is easily seen even using only a weak light source, thanks to the high retroreflective properties caused by the glass beads and the metal reflective layer, metal layers, and the like, it is possible to print the original, displayed on a computer, unchanged in the case where the fabric sheet is used for a digital printing process because the base sheet is formed of textile, and strength is high. Industrial Applicability

[46] According to the fabric sheet for a banner of the present invention, visibility at night is high due to high retroreflective properties caused by glass beads, metal layers, and the like, it is possible to print the original, displayed on a computer, unchanged in the case where the fabric sheet is used for a digital printing process because the base sheet is formed of textile, and the uppermost resin layer is formed of a vinylchloride resin composition having excellent printability and excellent atmospheric corrosion resistance, and strength is high.

[47] Further, according to the fabric sheet for a banner of the present invention, retroreflective properties can be imparted to both sides of the base sheet, thereby increasing the advertising effect at night.

[48]

Claims

[I] A fabric sheet for a banner having retroreflective properties, comprising: a base sheet; and an adhesive layer, a metal reflective layer, a focal resin layer, a glass bead layer, a glass bead fixing resin layer and an uppermost layer sequentially formed on one side or both sides of the base sheet.

[2] The fabric sheet for a banner having retroreflective properties of claim 1, wherein the base sheet is formed of textile.

[3] The fabric sheet for a banner having retroreflective properties of claim 2, wherein the adhesive layer is formed of a solvent adhesive composed of one selected from the group consisting of a polyether resin, a polyester resin, a polyurethane resin and an epoxy resin.

[4] The fabric sheet for a banner having retroreflective properties of claim 3, wherein the adhesive layer is formed to a thickness of 30 to 80 D.

[5] The fabric sheet for a banner having retroreflective properties of claim 2, wherein the metal reflective layer is a thin film layer composed of one or more metals selected from the group consisting of gold, silver, aluminum, platinum, nickel, and chromium.

[6] The fabric sheet for a banner having retroreflective properties of claim 2, wherein the uppermost layer is formed of a vinylchloride resin composition.

[7] The fabric sheet for a banner having retroreflective properties of claim 6, wherein the adhesive layer is formed to a thickness of 20 to 50 D.

[8] The fabric sheet for a banner having retroreflective properties of any one of claims 1 to 7, wherein the focal resin layer and the glass bead fixing resin layer are formed into a resin composition layer which is a single layer, and glass beads are entirely embedded in the resin composition layer.

[9] The fabric sheet for a banner having retroreflective properties of claim 8, wherein the resin composition layer is formed of a polyester urethane resin, or a urethane resin cross-linked with a copolymer of acrylic polyol with acrylate, methacrylate, butylacrylate, ethylacrylate or vinylacetate and polyfunctional isocyanate.

[10] The fabric sheet for a banner having retroreflective properties of any one of claims 1 to 7, wherein the focal resin layer, the glass bead fixing resin layer and the uppermost resin layer are formed into a resin composition layer which is a single layer, and glass beads are entirely embedded in the resin composition layer.

[II] A method of manufacturing a fabric sheet for a banner having retroreflective properties of any one of claims 1 to 7, comprising the steps of: forming an uppermost resin layer composed of a vinylchloride resin composition on a silicon thin film on a carrier film or a carrier paper; forming a glass bead fixing resin layer on the uppermost resin layer; adhering glass beads on the glass bead fixing resin layer by freely dropping the glass beads; forming a focal resin layer on the glass beads; forming a metal reflective layer on the focal resin layer; applying an adhesive on the metal reflective layer to form an adhesive layer; and adhering a base sheet to the adhesive layer.

[12] A method of manufacturing a fabric sheet for a banner having retroreflective properties of claim 8, comprising the steps of: forming an uppermost resin layer composed of vinylchloride resin composition on a silicon thin film on a carrier film or a carrier paper; forming a resin composition layer by preparing a resin composition with a polyester urethane resin, or a urethane resin cross-linked with a copolymer of acrylic polyol with acrylate, methacrylate, butylacrylate, ethylacrylate or vinylacetate and polyfunctional isocyanate, mixing or combining glass beads with the resin composition, and then applying the resin composition including the glass beads on the uppermost resin layer; forming a metal reflective layer on the resin composition layer; applying an adhesive on the metal reflective layer to form an adhesive layer; and adhering a base sheet to the adhesive layer.