KR102611358B1 - Signboard for advertisement - Google Patents

Abstract

Guide grooves 15 formed on the upper and lower surfaces of the front end of the main frame 100, respectively; and
An advertising sign including an advertising sign 300 is slidably inserted into the guide groove 15 and installed on the front of the main frame.

Description

Advertising signboard{SIGNBOARD FOR ADVERTISEMENT}

The present invention relates to advertising signs.

Advertising signs are installed inside and outside of buildings to advertise and promote a company's name or products. Additionally, advertising signs include advertising signs with a sandwich panel structure of film, adhesive, and base material layers that display the company's name or image of a product. When producing advertising signs using such panels, construction was difficult because they were generally produced using a bending method. Also, even when a sign was manufactured using a separate frame, it was manufactured by attaching one advertising sign to the frame. Accordingly, if part of the advertising sign is damaged, the entire large advertising sign must be replaced, which is uneconomical, and there is a problem of poor design due to limitations in expression.

The purpose of the present invention is to provide an advertising sign that has good constructability, is easy to replace and repair, and has excellent design.

The objects of the present invention are not limited to the objects mentioned above, and other objects and advantages of the present invention that are not mentioned can be understood by the following description and will be more clearly understood by the examples of the present invention. Additionally, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof indicated in the patent claims.

A guide frame (10) formed on the upper and lower surfaces of the front end of the main frame (100) according to the present invention, respectively, and having a guide groove (15); And an advertising signboard 300 is slidably inserted into the guide groove 15 and installed on the front of the main frame.

The advertising sign according to the present invention has good constructability and is easy to replace and repair, so it is economical and has excellent design properties.

In addition, the advertising sign according to the present invention may include an advertising sign that exhibits excellent strength and weather resistance, and at the same time has excellent adhesion and excellent surface quality.

In addition to the above-described effects, specific effects of the present invention are described below while explaining specific details for carrying out the invention.

Figure 1 is a perspective view of an advertising signboard according to an embodiment of the present invention.
Figure 2 is a schematic diagram showing that two or more pieces constituting an advertising signboard according to an embodiment of the present invention are inserted while sliding to form one advertising signboard.
Figure 3 is a rear view of a portion of an advertising sign according to an embodiment of the present invention cut away.
Figure 4 is a structural diagram showing section AA' of Figure 3.
Figure 5 is a schematic diagram schematically showing a cross section of an advertising display board according to an embodiment of the present invention.
Figure 6 is a schematic diagram schematically showing an uneven pattern formed on the uneven surface of the metal layer of an advertising display board according to an embodiment of the present invention.
Figure 7 is a schematic diagram schematically showing a method of manufacturing an advertising display board according to another embodiment of the present invention.

The above-mentioned objects, features, and advantages will be described in detail later with reference to the attached drawings, so that those skilled in the art will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of known technologies related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. In the drawings, identical reference numerals are used to indicate identical or similar components.

Hereinafter, the “top (or bottom)” of a component or the arrangement of any component on the “top (or bottom)” of a component means that any component is placed in contact with the top (or bottom) of the component. Additionally, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

Below, advertising signboards according to some embodiments of the present invention will be described.

One embodiment of the present invention includes a guide frame (10) formed on the upper and lower surfaces of the front end of the main frame (100) and having a guide groove (15); and an advertising sign 300 that is slidably inserted into the guide groove 15 and installed on the front of the main frame. At this time, the advertising display board may be one advertising display board assembled from two or more pieces. Accordingly, pieces of various colors or pieces of various shapes, sizes, and three-dimensional designs can be assembled to form one advertising sign, showing excellent design.

Figure 2 is a schematic diagram showing that two or more pieces constituting an advertising signboard according to an embodiment of the present invention are inserted while sliding to form one advertising signboard, and Figure 1 is a sliding insertion according to Figure 2. It shows a perspective view of an advertising signboard formed by:

Figure 3 is a rear view showing a portion of an advertising sign cut away according to an embodiment of the present invention, and Figure 4 is a structural diagram showing section A-A' of Figure 3. As shown in Figure 4, the advertising sign includes a main frame 100 including a guide frame 10 and a fixed frame 20. In addition, it is formed on the upper and lower surfaces of the front end of the main frame 100 and includes a guide frame 10 having a guide groove 15. There may be two or more guide grooves 15, for example, one or more guide grooves 15 may exist on the upper surface and one or more on the lower surface of the front end of the main frame 100, A more three-dimensional design can be given by sliding the advertising display board pieces differently in each of the plurality of guide grooves. Then, only the pieces that need to be repaired and/or replaced can be removed, the pieces repaired and/or replaced, and then slid back into place.

If the advertising sign has a structure that is fastened by inserting it from the top of the advertising sign downward, rainwater, etc. can easily seep through the passage through which the advertising sign is fastened, causing corrosion. In addition, if the advertising sign has a structure that is fastened by inserting from the lower part of the advertising sign to the upper part, a separate fixing means is required to prevent the advertising sign from slipping out of the lower part where it entered, which may be uneconomical. there is.

The advertising sign is formed on the upper and lower surfaces of the front end of the main frame 100 by penetrating the guide groove 15, into which the advertising sign is slidably fastened, in the direction of at least one side of the main frame 100. Then, the advertising display board slides along the guide groove 15 and passes through at least one side of the main frame 100. Accordingly, problems such as the need for a separate fixing means or the occurrence of corrosion can be prevented.

The guide frame 10 includes a first guide frame 11 located on the outside of the sign, a second guide frame 12 located on the inside, and a third guide frame connecting the first guide frame and the second guide frame ( 13) may be included. The first guide frame 11, the second guide frame 12, and the third guide frame 13 may be integrated into one frame.

The guide groove 15 may be formed surrounded by the first guide frame 11, the second guide frame 12, and the third guide frame 13. Additionally, the length L2 of the second guide frame 12 may be longer than the length L1 of the first guide frame 11.

The length L1 of the first guide frame 11 is relatively short, so that the exposed area of the advertising display board for external advertising can be widened. In addition, the length L2 of the second guide frame 12 is longer than the length L1 of the first guide frame 11, so that the length L1 of the first guide frame 11 is Despite being short, it can well support an advertising sign that is movably inserted into the guide groove. Additionally, an appropriate level of support can be provided even when two or more pieces constituting an advertising display board have various shapes, for example, triangular structures, rather than square ones. For example, the length L2 of the second guide frame 12 may be about 1.1 to about 2.5 times the length L1 of the first guide frame 11. For example, it may be about 1.6 to about 2.5 times, or about 2 to about 2.5 times. Accordingly, it can be well supported regardless of the shape and weight of the slidingly inserted piece, and accordingly, the advertising display board can be well protected from the surrounding environment, such as wind or impact, and can exhibit excellent durability.

And, one end of the first guide frame 11 is connected to the third guide frame 13, the other end is in contact with the surface of the advertising display board 300, and the first guide frame 11 is connected to the third guide frame 13. It may be formed to be inclined toward the surface of the advertising display board 300 from the other end. By contacting the advertising display board obliquely with the first guide frame 11 at a predetermined angle, the area of friction with the advertising display board can be narrowed. In addition, it is possible to provide a certain level of support strength compared to the contact area with respect to the advertising display board.

For example, when the first guide frame 11 forms an angle of 90° from the third guide frame, the entire first guide frame comes into contact with the entire upper part of the advertising display board, and thus the support strength can be further increased. However, when the advertising display board is slidingly fastened in this structure, the friction area with the first guide frame becomes too wide, which may cause damage such as scratches or peeling of the surface film on the advertising display board. there is.

The first guide frame 11 is inclined at an acute angle from the third guide frame to narrow the area of friction with the advertising display board. In addition, it is possible to provide a certain level of support strength compared to the contact area with respect to the advertising display board. For example, the first guide frame 11 may have a structure inclined at an angle of about 70° to about 89° from the third guide frame 13. Accordingly, the friction area with the advertising sign is narrowed to prevent damage such as scratches to the advertising sign or surface film peeling off during the sliding fastening process, and at the same time, external forces such as strong winds or collisions with other objects are prevented. It is also possible to provide support strength above a certain level.

The first guide frame 11 has a structure inclined at an angle in the above range from one end to the other end toward the surface of the advertising display board 300, and the length L2 of the second guide frame 12 By having a structure longer than the length L1 of the first guide frame 11, the friction area with the advertising display board can be narrowed, and a certain level of support strength can be better provided compared to the contact area with the advertising display board.

The main frame 100 includes a fixed frame 20 at the rear of the guide frame 10, and the fixed frame 20 includes a first fixed frame 21 and a second fixed frame 23. . The first fixed frame 20 can support a portion of the rear of the support frame 400, the second fixed frame 23 has a length corresponding to the thickness of the support frame 400, and the guide frame 10 It may have a structure that connects to the other side. Accordingly, the rigidity of the advertising sign can be improved along with the guide frame 10.

One end of the second fixed frame 23 is connected to the second guide frame 12, the other end is connected to the first fixed frame 21, and the length (L3) of the first fixed frame 21 ) may have a structure that is longer than the length (L2) of the second guide frame 12. For example, the length L3 of the first fixed frame 21 may be about 1.1 to about 2 times the length L2 of the second guide frame 12. For example, it may be about 1.3 times to 2 times or about 1.5 times to 2 times. Accordingly, the support frame 400 can better protect the advertising sign and improve the durability of the advertising sign.

In the advertising sign, the length L2 of the second guide frame 12 is longer than the length L1 of the first guide frame 11, and the length L3 of the first fixed frame 21 is longer than the second guide frame 12. By having a structure longer than the length L2 of the guide frame 12, the advertising sign made of two or more pieces that are slidably inserted is protected from the surrounding environment, for example, with the minimum contact area with the first guide frame 11. For example, an advertising sign can maintain a stable structure by providing a certain level of support strength without being lifted or shaken by external forces such as wind or impact.

Additionally, a support frame 400 may be included in the groove formed by the second guide frame 12, the second fixed frame 23, and the first fixed frame 21. The support frame 400 may be located at the back of the advertising display board 300 while facing the advertising display board 300 . The support frame 400 has a similar size to the advertising board 300, and is located at the rear of the advertising board 300 to protect the advertising board from the surrounding environment, for example, wind or shock, and structurally. Stability can be strengthened. In addition, the length L3 of the first fixing frame 21 is longer than the length L2 of the second guide frame 12, so that the support frame 400 can have a stable structure. .

The thickness (t2) of the support frame may be thicker than the thickness (t1) of the advertising display board, and thus the advertising display board can be stably supported. For example, the thickness (t2) of the support frame may be about 1.1 to about 3.5 times the thickness (t1) of the advertising display board. For example, it may be about 1.5 to 3.5 times, about 1.7 to 3.5 times, or about 2 to 3.5 times.

The advertising sign may include a gap between the support frame 400 and the advertising display board 300, and the thickness (t3) of the gap is smaller than the thickness (t1) of the advertising display board (300). As such, the support frame 400 can stably support the advertising display board 300 and reduce friction between the advertising display board 300 and the support frame 400. Accordingly, the advertising display board 300 can smoothly slide in the guide groove 15. The thickness t3 of the gap may be less than about 0.1 to about 1 times the thickness t1 of the advertising display board 300. For example, it may be about 0.1 times to about 0.7 times, about 0.1 times to about 0.5 times, or about 0.1 times to about 0.4 times. If the thickness (t3) of the gap exceeds the above range in relation to the thickness (t1) of the advertising display board 300, wind may pass through the gap and be more affected by external force, and the vibration amplitude of the advertising display board may be As it grows, stability may decrease.

The advertising sign may include hollow portions on the upper and lower surfaces of the rear end of the main frame. Specifically, it may include a hollow portion protruding from the rear end of the first fixing frame. Accordingly, structural rigidity and weight reduction can be provided to the advertising sign. And, by having a hollow portion, the thickness of the support frame can be reduced while sufficiently supporting the large advertising display board. In addition, strong winds and impacts can be alleviated, and thus the durability of the advertising sign can be improved.

A rear protrusion 30 may be present at the rear end of the main frame. The protrusion 30 may be connected to the hollow part or may be located at the lower part of a separate rear plate installed at the rear end of the main frame. The rear protrusion may function to fasten the rear support bar. For example, the rear support bar may be fastened to the rear protrusion using fastening members such as bolts, nuts, adhesives, etc.

The advertising sign may include an auxiliary frame 210 and a rear support bar 220 at the rear end. In addition, sufficient support can be provided and weight reduction can be achieved with only the auxiliary frame 210 and the rear support bar 220.

The auxiliary frame 210 may include a first auxiliary frame and a second auxiliary frame at the top and bottom. The first auxiliary frame and the second auxiliary frame may intersect each other to have an X shape. Accordingly, the degree of support can be improved. One end of the first auxiliary frame may be fixed to the main frame, and the other end may be fixed to the support frame at a predetermined distance. Additionally, one end of the second auxiliary frame may be fixed to the first fixed frame, and the other end may be fixed to the rear support bar at a predetermined distance.

The rear support bar has a predetermined length at the rear end of the main frame having the hollow portion, and two or more rear support bars may be positioned vertically to provide strength and support.

The advertising sign may be one advertising sign in which two or more pieces are assembled. The advertising display board may form one advertising display board by sliding each piece into the main frame having the above structure. At this time, each piece can be given a variety of designs by varying its shape, color, and three-dimensional effect. In addition, if part of the advertising sign is damaged or contaminated, it can be economical to repair and replace only the damaged piece without having to replace the entire large-area advertising sign. Pieces that are slidably inserted and constitute an advertising display board can provide appropriate support not only in square shapes but also in various shapes, for example, triangular or three-dimensional structures.

If the advertising sign has a structure that is fastened by inserting it from the top of the advertising sign downward, rainwater, etc. can easily seep through the passage through which the advertising sign is fastened, causing corrosion. In addition, if the advertising sign has a structure that is fastened by inserting from the lower part of the advertising sign to the upper part, a separate fixing means is required to prevent the advertising sign from slipping out of the lower part where it entered, which may be uneconomical. there is.

The guide groove 15 of the advertising sign penetrates at least one side of the main frame 100 and is formed on the upper and lower surfaces of the front end of the main frame 100, respectively. Then, the piece passes through at least one side of the main frame 100 along the guide groove 15 and is slidably coupled to form an advertising display board. Accordingly, problems such as the need for a separate fixing means or the occurrence of corrosion can be prevented.

The advertising display board may be a panel sequentially including a surface film, a urethane-based adhesive layer, and a composite substrate.

The advertising display board sequentially includes a surface film, a urethane-based adhesive layer, and a composite substrate, the composite substrate includes a metal layer and a resin base layer, the metal layer is disposed on a side of the urethane-based adhesive layer, and the metal layer includes the urethane-based adhesive layer. On the adhesive layer side, it may include an uneven surface including an uneven pattern.

Typically, advertising displays use a lot of urethane-based adhesives between the surface film and the base layer. Urethane-based adhesives require water as a reactant, and gas (CO2) is generated as a reaction product, so a passage through which water can enter and gas can be discharged is required. Conventionally, plywood such as MDF (medium density fiberboard), which has pores that can be connected to form passages, has been used as the base layer of advertising displays. Water and gas can move through the passages, There were no particular problems using urethane-based adhesive.

Meanwhile, advertising signs are required to be usable for a long period of time even in external environments. For example, outdoor signs are required to have weather resistance of more than 5 years. To this end, it may be desired to provide excellent strength and weather resistance to advertising signs by including a metal layer.

On the other hand, metal has no passages such as pores unless perforated, so the moisture required for the curing reaction of the urethane adhesive cannot be supplied, and the gas that is a reaction product cannot be discharged, which reduces adhesion and causes the surface to float, placing emphasis on appearance. There is a problem with the surface quality of signs being deteriorated. Also, when perforating metal, the strength, etc. decreases.

The advertising display board includes a metal layer to provide excellent strength and weather resistance, and includes a concave-convex surface including a concavo-convex pattern in the metal layer, so that it can exhibit excellent adhesion strength and excellent surface quality while including a urethane-based adhesive layer.

Figure 5 is a schematic diagram schematically showing a cross section of an advertising display board according to an embodiment of the present invention. As shown in Figure 5, the advertising display board of the present invention sequentially includes a surface film 500, a urethane adhesive layer 600, and a composite substrate 700 from the top, and the composite substrate includes a metal layer 710 and It includes a resin base layer (720). At this time, the metal layer is disposed on the urethane-based adhesive layer side, and the metal layer includes an uneven surface (E) including an uneven pattern (P) on the urethane-based adhesive layer side.

Specifically, the composite substrate includes a resin base layer and a metal layer laminated on one surface of the resin base layer. The metal layer is laminated on both sides with the resin base layer interposed between them, so that the composite base material may have a sandwich structure (not shown).

The advertising display board includes a resin base layer. Specifically, the resin base layer may be a polyolefin resin base layer filled with a polyolefin resin selected from the group consisting of polyethylene, polypropylene, polybutylene, and combinations thereof. For example, the resin base layer may include a polyethylene resin base layer, and accordingly, it can be easily molded and sheeted at a high thickness of 100㎛ or more, that is, made into a film. In addition, the resin has a low glass transition temperature (Tg), so it can provide flexibility to the laminated panel, so when an external force is applied to the advertising display board, it can elastically respond to the impact of the external force and prevent breaking or bending. there is. In addition, the resin has a low melting point (Tm), making it easy to mold and process, and has a low specific gravity, making it possible to reduce the weight of the entire advertising display board.

The resin base layer may further improve weather resistance by further including a flame retardant. At this time, the resin base layer may include the resin to improve compatibility with flame retardants (eg, aluminum hydroxide, etc.). In addition, the resin has both a low glass transition temperature (Tg) and a low melting point (Tm), and can improve the dispersion of flame retardants, etc.

The thickness of the resin base layer may be about 0.5 mm to about 10 mm. For example, it may be 2.6 mm to about 3 mm. If the thickness of the base layer is less than the above range, it may not be able to sufficiently support the surface film and metal layer laminated on top, and durability may be reduced due to weak bending strength. In addition, if it exceeds the above range, there may be a problem that production efficiency is reduced due to a burden on the manufacturing process.

The advertising display board may include a metal layer on one side of the resin base layer, thereby providing excellent strength and weather resistance. Specifically, the metal layer is selected from the group consisting of aluminum (Al), indium (In), stainless steel, copper (Cu), nickel (Ni), chromium (Cr), cobalt (Co), and combinations thereof. May contain a selected one. Alternatively, it may include a metal layer that is anodized with the metal, deposited with another metal, or coated with a functional coating solution.

For example, the metal layer contains aluminum, which can provide superior strength and weather resistance more economically and improve processability. The thickness of the metal layer may be about 0.1 mm to about 0.9 mm, or about 0.2 mm to about 0.5 mm. If the thickness of the metal layer is less than the above range, the bending strength of the advertising display board is lowered, and it may be easily damaged by external force, which may cause damage during molding or installation. Additionally, if the thickness of the metal layer exceeds the above range, the weight may increase too much and the cost may increase, resulting in uneconomical problems.

The metal layer is disposed on the urethane-based adhesive layer side and attached to the surface film. When the composite substrate has a sandwich structure, one of the metal layers may be disposed on the side of the urethane-based adhesive layer and attached to the surface film.

The urethane-based adhesive layer includes a urethane-based adhesive. Urethane-based adhesives are a two-component type in which a curing agent containing a bifunctional or higher aromatic or aliphatic isocyanate is applied to a base containing polyol, and a prepolymer that leaves an NCO group at the end, capping the NCO group with an OH group. It is in the form of a polyol that blocks it, and there is a one-component type that provides eco-friendliness. For example, the two-component urethane-based adhesive may be polyol, polyether polyol, low molecular weight glycol, or a combination thereof. As the polyether polyol, polybutadiene diol, polytetramethylene ether glycol, polypropylene oxide glycol, polypropylene oxide triol, polybutylene oxide glycol, polybutylene oxide trion, and combinations thereof can be used. Additionally, examples of low molecular weight glycols include 1,4-butanediol, 1,3-butanediol, 1,6-hexanediol, ethylene propylene glycol, diethylene glycol, dipropylene glycol, neopentyl glycol, and combinations thereof. . The isocyanate includes methylenediphenyl diisocyanate (MDI), 1,6-hexamethylene diisocyanate (HDI), p-phenylene diisocyanate (PPDI), Toluene diisocyanate (TDI), 1,5-naphthalene diisocyanate (NDI), isoporon diisocyanate (IPDI), cyclohexylmethane diisocyanate (H12MDI) , Xylene diisocyanate (XDI), norbornane diisocyanate (NBDI), trimethyl hexamethylene diisocyanate (TMDI), and at least one compound selected from the group consisting of combinations thereof. It can be included. The isocyanate may be included in an amount of 10 to 60% by weight. The two-component urethane-based adhesive may further include an elasticity supplement to improve elongation.

The urethane-based adhesive layer may include a one-component urethane-based adhesive rather than a two-component urethane-based adhesive, thereby providing environmental friendliness to the advertising display board. The one-component urethane-based adhesive is a reaction product of polyol and polyisocyanate and may be a polyurethane oligomer having isocyanate groups at both ends. As described above, a high molecular weight poly is formed through reaction with isocyanate at the terminals and moisture. It is hardened by making urethane, and a urea reaction (urea reaction) is created as a reaction derived from this. The isocyanate (NCO) value of the one-component urethane adhesive may be 2 to 90% or 2 to 7%.

The thickness of the urethane-based adhesive layer may be about 0.1 μm to about 100 μm. If the thickness of the adhesive layer is less than the above range, there is a problem of insufficient adhesion, and if it exceeds the above range, the moldability may decrease and excessive bubbles may be generated, thereby deteriorating the quality of the product, especially There may be problems where it becomes impossible to secure sufficient ventilation. For example, the thickness of the urethane-based adhesive layer may be about 1㎛ to about 30㎛, and if necessary, it may have a thickness of 100㎛ or more.

The metal layer includes a concave-convex surface including a concavo-convex pattern toward the urethane-based adhesive layer. The metal layer provides excellent adhesion strength by appropriately supplying moisture necessary for the curing process of the urethane-based adhesive through the uneven pattern without additional perforations, that is, without passages such as holes, thereby ensuring a smooth reaction of the adhesive. can represent. In addition, gas, which is a reaction product, can be well discharged, preventing phenomena such as bumps or lifting of the surface of the surface film due to bubbles formed by the gas, thereby providing excellent appearance quality and excellent adhesion strength. The other side of the metal layer facing the resin base layer may be flat.

The metal layer may include an air channel formed by the concavo-convex pattern. The air channel may be formed in a concave portion formed by a concave-convex pattern, or the air channel may be formed along the deepest valley in the concave portion. Accordingly, the uneven surface expands the contact area with the adhesive over a large surface area, and facilitates the discharge of moisture required by the reaction of the urethane adhesive and gas formed by the reaction, thereby preventing the surface film from lifting, resulting in improved initial and long-term adhesion. It can indicate intensity. The irregularities can be formed through brushing using a sapor roll or the like. The air channel may be formed along a portion of the recess, as shown in FIG. 5, or may be formed along the entire recess formed by the unevenness.

The concavo-convex pattern may include first scratches unidirectionally oriented in a first direction. Here, unidirectional orientation includes, for example, a state in which two predetermined first scratches are completely parallel to each other, as well as an error range that is difficult to distinguish when seen with the naked eye, or a state in which there is no intersection point because the scratches are parallel. It should be understood as doing so. The scratches may exist continuously without interruption in the orientation direction from one end of the uneven surface to the other end. Through this, the gas generated in the middle of the film can be easily discharged.

Figure 6 is a schematic diagram schematically showing the uneven pattern (P) formed on the uneven surface (E) of the metal layer of an advertising display board according to an embodiment of the present invention. The uneven pattern P may include a first scratch S1 unidirectionally oriented in a first direction and a second scratch S2 unidirectionally oriented in a second direction.

The orientation direction in the first direction and the orientation direction in the second direction may have a structure in which they are staggered. Accordingly, the first scratch and the second scratch may have one or more intersection points. Specifically, the concavo-convex pattern may have an intersection angle between the first orientation direction and the second orientation direction of 0.5° to 90°. Alternatively, the intersection angle may be 5° to 90° or 15° to 90°. For example, when the intersection angle between the first direction and the second direction is 90°, the first scratch and the second scratch may form a mesh-like shape.

The uneven pattern includes first scratches unidirectionally oriented in the first direction and second scratches unidirectionally oriented in the second direction, as described above. Accordingly, the advertising display board may include air channels having two or more different orientations along the concave portion formed by the first scratch and the second scratch. Thus, it is possible to facilitate the discharge of gas and provide not only improved adhesion strength but also excellent surface quality. For example, if the scratch is cut in the middle or only a one-way channel is formed with a hairline, one part of the channel is likely to be blocked during the process of forming the adhesive layer by applying adhesive, and as a result, the entire channel is blocked, reducing the adhesion strength. There may be a problem of deterioration and surface quality deterioration.

Specifically, the uneven surface may be composed of a plurality of grooves and a plurality of flat parts. The plurality of grooves may have a predetermined width and depth and may be arranged between the plurality of flat parts. The depth of the groove is based on the direction perpendicular to the plane of the uneven surface of the metal layer. The uneven surface may not include a protrusion protruding above the surface of the metal layer. Accordingly, the surface of the surface film can be prevented from becoming uneven due to the protrusions of the uneven surface and can have high smoothness.

Specifically, the average depth (D) of the irregularities formed on the uneven surface (E) may be about 350 ㎚ to 1,500 ㎚, and the average width (W) of the irregularities may be about 0.5 ㎛ to about 50 ㎛. For example, the average depth (D) of the irregularities may be from about 350 nm to about 800 nm or about 600 nm to about 800 nm, and the average width (W) may be from about 3 μm to about 11.5 μm or from about 3 μm to about 3 μm. It may be 9 μm. The irregularities include the average depth and width in the above range, so that the adhesive area with the urethane-based adhesive can be adjusted and an air channel of an appropriate size can be formed. The average depth and width of the irregularities can be measured using a confocal laser scanning microscope (CLSM).

Specifically, when the average depth of the irregularities is less than the above range, the adhesive easily fills the irregularities and an air channel is not formed, and accordingly, gas, which is a reaction product of the urethane-based adhesive, cannot be discharged, causing the film surface to be lifted or uneven, resulting in an appearance. Quality may be damaged, and the adhesion area may be reduced, causing problems of easy peeling. If the average depth of the irregularities exceeds the above range, gas may be easily discharged, but there may be a problem in that the adhesion strength decreases as the empty space between the adhesive layer and the metal layer increases. In addition, when the average width of the irregularities is less than the above range, it is not easy to fill with the adhesive, and the contact area between the adhesive and the metal layer is not sufficient, so there may be problems such as easy peeling and reduced adhesion strength. In addition, when the average width of the irregularities exceeds the above range, the adhesive easily fills the grooves and an air channel is not formed, and accordingly, gas, which is a reaction product of the urethane adhesive, cannot be discharged, causing the film surface to become lifted or uneven. It may damage the exterior quality.

The advertising display board may include an air channel formed along the concave portion formed by the first scratch and the second scratch, and may exhibit excellent adhesion strength and excellent surface quality while including a urethane-based adhesive layer. If air channels exist in the advertising display panel, moisture is absorbed by capillary action when the panel is immersed in water. Accordingly, the size of the air channel, etc. can be confirmed through the moisture absorption rate of the panel.

The advertising display board may have a moisture absorption rate of 0.3% to 4% according to Equation 1 below. Since the advertising display board has a moisture absorption rate in the above range, it can be confirmed that an air channel of an appropriate size exists. For example, if the moisture absorption rate is less than the above range, the surface of the surface film may become uneven due to air bubbles, the surface may float, and the adhesion strength may decrease. In addition, if the above range is exceeded, there may be problems such as the adhesion between the surface film and the metal layer being significantly reduced and easily detached by external force.

[Equation 1]

Moisture absorption rate (%) = (|Last weight of advertising sign (Wt) - Initial weight of advertising sign (Wo)|/ Initial weight of panel (Wo))

In Equation 1, Wo is the initial weight of a 10 cm (width) This refers to the final weight (Wt) of the advertising sign after being dried at 50°C for 24 hours.

The surface film includes a vinyl chloride resin layer and an acrylic resin layer, and the vinyl chloride resin layer may be attached to the urethane-based adhesive layer. The surface film has a vinyl chloride resin layer containing polyvinyl chloride (PVC) on the side attached to the urethane adhesive layer, so that the acrylic resin layer exposed to the outside maintains an excellent surface appearance with a flat and high smoothness. Meanwhile, the surface state of the vinyl chloride resin layer can be modified by primary heat, which will be described later, and the adhesion strength can be further improved through the anchor effect caused by heat in relation to the adhesive layer. Additionally, by disposing an acrylic resin layer containing polymethyl methacrylate (PMMA) on the vinyl chloride resin layer, high contamination resistance can be exhibited. The thickness of the surface film may be about 50 μm to about 250 μm. And, the thickness of the vinyl chloride resin layer may be about 45㎛ to about 245㎛. If the thickness of each layer is less than the above range, durability may be reduced, and if it exceeds the above range, there may be a problem of easy detachment due to shrinkage due to heterogeneous adhesion.

The surface film may have an elastic modulus measured using a tensile tester (UTM) of about 150 MPa to about 200 MPa. The surface film has an elastic modulus within the above range, so that it can be smoothly and slidably inserted into the guide groove. In addition, the advertising display board is slidably inserted into the guide groove 15 and installed on the front of the main frame. As described above, the first guide frame 11 is inclined at a predetermined angle. Only part of the advertising sign is accessible. At this time, the surface film of the first guide frame and the advertising display board may have a surface friction coefficient of about 0.02 to 0.05 at room temperature (about 25° C.). By having a friction coefficient in the above range, scratch resistance can be exhibited on the advertising surface film and the film can be prevented from peeling off.

The adhesion strength of the advertising display board having the above structure may be about 2.8 Kgf/inch2 to about 15 Kgf/inch2. or about 4 Kgf/inch2 to about 15 Kgf/inch2. Accordingly, even when installed on the exterior wall of a building exposed to the external environment, the advertising sign can maintain excellent adhesion strength for a long time. In particular, the advertising display board can provide excellent adhesion strength in the above range even when the urethane-based adhesive layer includes a one-component urethane-based adhesive. In general, one-component urethane-based adhesives have lower adhesion strength compared to two-component urethane-based adhesives. Therefore, it is difficult to use a one-component urethane-based adhesive that provides eco-friendliness for advertising signs installed on the exterior walls of buildings that are easily exposed to the external environment. Meanwhile, the advertising display board includes a one-component urethane-based adhesive as a urethane-based adhesive layer to provide environmental friendliness, and by having the above structure, it can simultaneously exhibit environmental friendliness, excellent adhesion strength, and excellent surface quality.

Another embodiment of the present invention provides a composite substrate including a metal layer and a resin base layer, comprising: forming a concavo-convex pattern on the metal layer to form a concavo-convex surface on one surface of the metal layer; forming a urethane-based adhesive layer by applying a urethane-based adhesive to the uneven surface of the metal layer; While unwinding the surface film from the winding roll. Applying primary heat to one side of the surface film; and layering the surface film on the urethane-based adhesive layer by applying secondary heat and pressure.

Conventionally, advertising signs were manufactured using ovens, which resulted in uneconomical problems due to the complicated process. Meanwhile, the method of manufacturing the advertising display board can produce the desired advertising display board without using an oven.

As described above, by the above manufacturing method, it is possible to manufacture an advertising display board with excellent surface quality, such as excellent strength and weather resistance, and at the same time excellent adhesion and improved smoothness of the surface film.

Figure 7 is a schematic diagram schematically showing a method of manufacturing an advertising display board according to another embodiment of the present invention. The manufacturing method will be described below.

First, in the composite substrate including a metal layer and a resin base layer, the method includes forming an uneven surface on one side of the metal layer by forming an uneven pattern on the metal layer.

Details regarding the uneven pattern are the same as described above.

And, it includes the step of applying a urethane-based adhesive to the uneven surface of the metal layer to form a urethane-based adhesive layer.

The urethane-based adhesive may have a viscosity of about 5,500 cps to about 10,000 cps at 120°C. The urethane-based adhesive is applied to a metal layer with high thermal conductivity, and when applied to the metal layer, the temperature may rapidly decrease and the viscosity may rapidly increase. Taking this into account, the manufacturing method adjusts the viscosity of the urethane-based adhesive to the above range. Accordingly, the urethane-based adhesive is properly applied to the uneven surface of the metal layer to provide excellent adhesion strength, and an appropriate air channel formed along the concave portion can be maintained. For example, if the viscosity of the urethane-based adhesive is less than the above range, the adhesive completely fills the concavo-convex groove portion and an air channel is not formed, and if it exceeds the above range, the adhesion may be reduced. The urethane-based adhesive may be applied to the uneven surface of the metal layer using a roll-to-roll method to form a urethane-based adhesive layer.

And, it includes the step of applying primary heat to one side of the surface film while unwinding the surface film from the winding roll on which the surface film is wound. The surface film is guided through a guide bar toward the urethane-based adhesive layer and maintains a constant tension. At this time, by applying primary heat to one side of the surface film, ductility can be imparted to the film and the degree of flattening of the surface of the surface film can be improved. Accordingly, the adhesion strength of the advertising display board can be further improved.

The first heat can be applied using an infrared heater (IR heater) at a temperature higher than the glass transition temperature (Tg) of the surface film. For example, the primary heat may be applied to the vinyl chloride resin layer at a temperature of about 50°C to about 80°C for about 2 seconds to about 15 seconds.

Finally, it includes the step of placing the surface film on the urethane-based adhesive layer and applying secondary heat and pressure to laminate it.

The advertising display board can be manufactured by placing the surface film on the urethane-based adhesive layer and passing it between rollers arranged up and down. At this time, the roller may be a rubber roller, and secondary heat and pressure may be applied using the rubber roller. This, the secondary heat may be at a temperature of about 70°C to about 100°C. And, the pressure may be about 1 kpa to about 10 kpa. For example, it may be about 3 kpa to about 7 kpa.

In the above manufacturing method, the secondary heat and pressure are adjusted to the above range using a rubber roller, thereby preventing the viscosity of the urethane-based adhesive from being lowered to fill the air channel or filling the air channel with the urethane-based adhesive due to pressure. In other words, it is possible to maintain the shape of the above-mentioned concave-convex pattern and increase the adhesion strength while exhibiting excellent surface appearance quality. Specifically, if the heat and pressure are less than the above range, the adhesion strength decreases, and if the heat and pressure exceed the above range, there may be a problem in that the urethane-based adhesive fills the valleys of the uneven pattern and an air channel is not formed.

As described above, the present invention has been described with reference to the illustrative drawings, but the present invention is not limited to the embodiments and drawings disclosed herein, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that transformation can occur. In addition, although the operational effects according to the configuration of the present invention were not explicitly described and explained while explaining the embodiments of the present invention above, it is natural that the predictable effects due to the configuration should also be recognized.

100: main frame
210: Auxiliary frame
220: rear support bar
300: Advertising sign
400: support frame
10: Guide frame
11: first guide frame
12: Second guide frame
13: Third guide frame (connection frame)
15: Guide groove
20: Fixed frame
21: first fixed frame
23: second fixed frame
30: rear protrusion
40: Ministry of SMEs and Startups
t1: Advertising sign thickness
t2: Thickness of support frame
t3: gap
500: surface film
600: Urethane-based adhesive layer
700: Composite substrate
710: metal layer
720: Resin base layer
730: air channel
1: Home section
2: Flat part
H: concave part
D: depth
W: width
P: uneven pattern
E: uneven surface
S1: first scratch
S2: Second scratch

Claims (13)

A guide frame (10) formed on the upper and lower surfaces of the front end of the main frame (100) and having a guide groove (15); and
An advertising display board 300 is slidably inserted into the guide groove 15 and installed on the front of the main frame,
The guide frame 10 includes a first guide frame 11 located on the outside of the sign, a second guide frame 12 located on the inside, and a third guide frame connecting the first guide frame and the second guide frame ( 13), including
The guide groove 15 is surrounded and formed by the first guide frame 11, the second guide frame 12, and the third guide frame 13,
One end of the first guide frame 11 is connected to the third guide frame 13, and the other end is in contact with the surface of the advertising display board 300,
The first guide frame 11 is formed to be inclined from one end to the other end at an angle of 70° to 89° from the third guide frame 13 toward the surface of the advertising display board 300,
The main frame 100 includes a fixed frame 20 at the rear of the guide frame 10,
The fixed frame 20 includes a first fixed frame 21 and a second fixed frame 23,
One end of the second fixed frame 23 is connected to the second guide frame 12, and the other end is connected to the first fixed frame 21,
It includes a support frame 400 in a groove formed by the second guide frame 12, the second fixed frame 23, and the first fixed frame 21,
Includes a gap between the support frame 400 and the advertising display board 300,
The thickness (t3) of the gap is smaller than the thickness (t1) of the advertising display board 300,
The advertising sign is one advertising sign containing two or more pieces.
Advertising signboard.
According to paragraph 1,
Each of the pieces has different shapes, colors, and three-dimensional effects.
Advertising signboard.
According to paragraph 1,
The length (L2) of the second guide frame 12 is longer than the length (L1) of the first guide frame 11.
Advertising signboard.
According to paragraph 1,
The thickness (t3) of the gap is less than 0.1 to 1 times the thickness (t1) of the advertising display board 300.
Advertising signboard.
According to paragraph 1,
The length L3 of the first fixed frame 21 is longer than the length L2 of the second guide frame 12.
Advertising signboard.
According to paragraph 1,
The first guide frame 11 is formed to be inclined in a straight line from the third guide frame 13 to the surface of the advertising display board 300 from one end to the other end.
Advertising signboard.
According to paragraph 1,
The support frame 400 is located at the rear of the advertising display board 300,
The thickness (t2) of the support frame is thicker than the thickness (t1) of the advertising display board.
Advertising signboard.
In clause 7,
The thickness (t2) of the support frame is 1.1 to 3.5 times the thickness (t1) of the advertising display board.
Advertising signboard.
According to paragraph 1,
Comprising a hollow portion on the upper and lower surfaces of the rear end of the main frame
Advertising signboard.
delete According to paragraph 1,
The guide groove 15 is formed to penetrate at least one side of the main frame 100,
The piece is slidably coupled to pass through at least one side of the main frame 100 along the guide groove 15.
Advertising signboard.
According to paragraph 1,
The advertising display board is a panel sequentially including a surface film, a urethane adhesive layer, and a composite substrate.
Advertising signboard. According to clause 12,
The surface film of the first guide frame and the advertising display board has a surface friction coefficient of 0.02 to 0.05 at room temperature.
Advertising signboard.

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