KR20130120784A - Reflecting sheet printed using open type beads process and products comprising the same - Google Patents

Abstract

The present invention relates to a reflective printing sheet in which an open type bead manufacturing method is applied and a product including the same and, more specifically, to the reflective printing sheet which comprises: an elastic base material; an adhesive layer formed on the elastic base material; a reflective film which is formed on the adhesive layer and is embedded in a structure to which reflective beads are protruded; an ink fixed layer which is formed on the reflective film and is formed on the surface to which the reflective beads are protruded; a printing layer formed on the ink fixed layer; and a transparent protective layer formed on the printing layer. The present invention provides the reflective printing sheet in which the ink fixed layer, the printing layer, and the transparent protective layer are formed in a bent structure which is cope with protruded structure of the reflective beads and a product including the same. The present invention has high reflection luminance as being an open type, has excellent difference limen for printed images and has three dimensional massing.

Description

Printed reflective sheet with open bead manufacturing method and products containing it {REFLECTING SHEET PRINTED USING OPEN TYPE BEADS PROCESS AND PRODUCTS COMPRISING THE SAME}

The present invention relates to a printed reflective sheet to which an open type bead manufacturing method is applied, and a product including the same. More specifically, an open type manufacturing method of a surface curved structure provides excellent reflection power as well as a recognizability of a printed image. By a printed reflective sheet having a sense of volume and a product comprising the same.

The reflective sheet improves visibility by specularly reflecting incident light. Accordingly, the reflective sheet is used for various purposes such as identification, safety, and advertising. For example, the reflective sheet is attached to clothing, shoes, bags, road signs, and various advertisements by adhesive or sewing. Reflective sheet can confirm the position of the wearer, especially when attached to the clothing of people working on the road or dangerous places, such as environmental sanitation workers, firefighters and construction workers, it is very effective for the protection and safety of the wearer.

The reflective sheet is usually divided into a bead type and a prism type. The bead type mainly uses transparent microspheres such as glass as a reflector. The prismatic shape is a reflector and mainly has a triangular pyramidal shape. Such bead-type and prism-type reflects incident light recursively in the same direction, which is advantageous for securing night visibility.

1 is a cross-sectional view showing an example of a reflective sheet according to a conventional general technique, which is a bead type.

Referring to FIG. 1, the reflective sheet generally includes a base sheet 1, an adhesive layer 2 formed on the base sheet 1, and a reflective film formed on the adhesive layer 2. The reflective film may include a reflective layer 3 formed by depositing a metal such as aluminum (Al), a binder layer 4 formed on the reflective layer 3, and a plurality of reflective beads embedded in the binder layer 4 ( 5) is included. When the reflective sheet having such a laminated structure is attached to an adherend such as clothes or shoes, the base sheet 1 is usually peeled off, and then the adhesive layer 2 is thermally fused to the adherend through heat pressing.

In addition, the glass beads of high refractive index are mainly used for the said reflective bead 5. The reflective bead 5 is embedded in the binder layer 4 in a structure in which approximately half its diameter protrudes so as to have high reflective brightness. Such an open type structure, that is, the reflective bead 5 is not completely embedded in the binder layer 4 as shown in FIG. 1, but only about half of the diameter is embedded so that the surface of the bead 5 is external. The projecting structure has a high reflection brightness.

Recently, a printing layer is formed on the reflective sheet to realize images of various colors or patterns. When the printed layer is formed, it may be usefully used for advertisements and the like.

In the present invention, the reflective sheet on which the print layer is formed is referred to as a 'print reflective sheet'. At this time, in forming the printed layer on the reflective sheet, it is difficult to form directly on the reflective bead 5. As a result, a printing layer is usually formed on the binder layer 4 under the reflective bead 5, that is, in FIG.

For example, Korean Patent Registration No. 10-0337981 (Patent Document 1) discloses a technique in which a printing layer is formed on the lower side of the reflective bead 5 through sublimation transfer. In addition, Korean Utility Model Registration No. 20-0320016 (Patent Document 2) and Korean Utility Model Registration No. 20-0265242 (Patent Document 3) are multi-colored between the reflective bead 5 and the reflective layer 3 through offset printing. Techniques for forming printed layers have been presented.

However, in forming the printed layer, when the printed layer is formed below the reflective bead 5, that is, between the reflective bead 5 and the reflective layer 3, the discriminating power of the printed image is poor. For example, the printed image may be identified to some extent within a short distance of less than 1 m, but as the distance increases, the printed image disappears and the discriminating power is significantly reduced. As a result, only the reflecting power is felt at a long distance, and it is difficult to identify the printed image, thereby losing the purpose (effect) of forming the printed layer and lowering the commercial value.

In addition, in JP 2005-165302 A (Patent Document 4), a printed layer is formed below the reflective bead 5, and the reflective bead 5 and the printed layer overlap when observed in the thickness direction of the reflective sheet. The reflection sheet arrange | positioned so that it may not become is shown. That is, the print image was positioned between the reflective beads 5. However, even in this case, the discriminating power of the printed image is degraded under the influence of the reflective beads 5.

In addition, it is also pointed out that the printing reflective sheet according to the prior art including the prior documents do not have a separate means for the sense of volume, the three-dimensional texture is falling.

Korean Patent Registration No. 10-0337981 Korea Utility Model Registration No. 20-0320016 Korea Utility Model Registration No. 20-0265242 JP-A-2005-165302

Accordingly, the present invention is to place the printing layer on top of the reflective bead, by forming the surface of the reflective sheet in the open type of the curved structure corresponding to the reflective bead, excellent reflection brightness as well as distinguishing ability of the printed image, It is an object of the present invention to provide a printed reflective sheet having a sense of volume and excellent three-dimensional texture is implemented and a product comprising the same.

The present invention to achieve the above object,

Elastic substrates;

An adhesive layer formed on the elastic substrate;

A reflective film formed on the adhesive layer and embedded in a structure in which reflective beads protrude;

An ink fixing layer formed on the reflective film and formed on a surface on which the reflective beads protrude;

A printing layer formed on the ink fixing layer; And

It includes a transparent protective layer formed on the printed layer,

The ink fixing layer, the printing layer, and the transparent protective layer provide a printed reflective sheet having a curved structure corresponding to the projecting structure of the reflective bead.

At this time, it is preferable that the printed reflective sheet according to the present invention has an embossed or engraved three-dimensional pattern formed on the upper portion of the transparent protective layer. And it may further comprise an adhesive resin layer formed on the lower portion of the elastic substrate.

According to a preferred embodiment, the printed reflective sheet according to the present invention satisfies the following equation. More preferably, at least the ink fixing layer satisfies the following equation.

[Mathematical Expression]

T ≤ 1 / 2H

(In the above equation,

 T: at least one selected from the thickness of the ink fixing layer, the thickness of the printing layer, and the thickness of the transparent protective layer,

H is the height of the reflective beads protruding from the surface of the reflective film.)

The present invention also provides a product with a printed reflective sheet according to the present invention.

According to the present invention, as well as having a high reflection luminance, the discriminating power of the printed image has an excellent effect. In addition, according to the present invention, due to having a sense of volume has an effect that can be implemented excellent three-dimensional texture.

1 is a cross-sectional view of a reflective sheet according to the prior art.
2 is a cross-sectional view and a manufacturing process diagram of a printed reflective sheet according to the first aspect of the present invention.
3 is a cross-sectional view of the printed reflection sheet according to the second aspect of the present invention and a state diagram of use thereof.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 2 and 3 illustrate exemplary embodiments of the present invention, which are provided only to assist in understanding the present invention, and thus the technical scope of the present invention is not limited thereto.

First, referring to FIG. 2, the printed reflective sheet 100 having a sense of volume according to the present invention may include an elastic substrate 80; An adhesive layer 10 formed on the elastic substrate 80; A reflective film 20 formed on the adhesive layer 10; And an ink fixing layer 30 formed on the reflective film 20. A printing layer 40 formed on the ink fixing layer 30; And a transparent protective layer 50 formed on the printed layer 40. And it has an open type surface structure. Specifically, the reflective film 20 is embedded with a plurality of reflective beads 22a in a protruding structure as usual, and surface curved structures 100a and 100b corresponding to the projecting structures of the reflective beads 22a. Has

In the present invention, as shown in FIG. 2, the ink fixing layer 30, the printing layer 40, and the transparent protective layer 50 are sequentially formed on the reflective bead 22a, but these ( 30 and 40 and 50 are formed in a curved structure corresponding to the reflective beads 22a, so that the reflective beads 22a appear to be open. According to the present invention, even though the open type structure, i.e., the surface bend structure 100a and 100b corresponding to the reflective bead 22a, is formed on the printed layer 40 on the reflective bead 22a, the luminance of reflection is increased. Does not fall. And the image formed on the printed layer 40 has an excellent discriminating power. That is, the printing layer 40 can be identified at a long distance while having good reflection luminance.

In addition, according to the present invention, the elastic substrate 80 has a three-dimensional volume. In this case, when the relief or intaglio three-dimensional pattern (110, see FIG. 3) is formed, it has an excellent three-dimensional texture by the volume of the elastic substrate (80). Hereinafter, exemplary forms of each component will be described.

The elastic substrate 80 is for a three-dimensional volume, it may have a thickness greater than the reflective film 20, for example. The elastic base material 80 is not limited as long as it is excellent in elasticity (elasticity) and thermal conductivity. The elastic substrate 80 may be any material that has mechanical properties such as dimensional stability in the process of forming the print layer 40 or the like.

The elastic substrate 80 may be composed of one or more elastomers selected from, for example, a synthetic resin foam, a synthetic elastomer, a silicone, a polyvinyl chloride, and a rubber. For example, the elastic substrate 80 may use a foam (foamed sheet) on a sheet on which a synthetic resin is foamed, such as a sponge. In this case, the foam may have elasticity (elasticity) by a plurality of fine pores, and for example, polyolefin-based, polyester-based, polyurethane-based, polyvinyl chloride-based, polyimide-based, polystyrene-based, acrylic-based, etc. One or more resins selected from foamed ones may be used. In addition, the elastic base material 80 is selected from a stretchable synthetic elastomer sheet selected from an elastic body such as a polyurethane-based polyurea-based, a stretchable soft elastic sheet molded from a silicone resin, a polyvinyl chloride-based resin, rubber, or the like. Can be.

The adhesive layer 10 is not limited as long as it has adhesiveness. The adhesive layer 10 may be any one that provides the adhesive force between the elastic sheet 80 and the reflective film 20. The adhesive layer 10 may include an adhesive selected from natural resins and synthetic resins, and specific examples thereof include polyethylene (LDPE, etc.), polyurethane, acrylic, epoxy, ethylene vinyl acetate (EVA), and polyvinyl chloride. One or more adhesives selected from the like and the like. Preferably, the adhesive layer 10 can be usefully used a polyurethane-based polyurethane having good elasticity (elasticity) in consideration of characteristics of fiber products such as clothing, circular retention after washing and the like. The adhesive layer 10 may be formed by applying the above adhesive to the lower surface of the reflective film 20 or the upper surface of the elastic substrate 80.

The reflective film 20 includes a plurality of reflective beads 22a as usual. In detail, the reflective film 20 includes a support layer 24 for increasing reflectance and a reflective bead layer 22 formed on the support layer 24. The reflective bead layer 22 includes a plurality of reflective beads 22a arranged in an orderly manner.

The reflective bead 22a is not limited as long as it has a light refractive index for retroreflective. Reflective beads 22a are transparent, for example glass beads; Non-glass ceramic beads; And transparent synthetic resin beads such as acrylic. The reflective bead 22a is preferably glass beads having a high refractive index. In addition, the reflective bead 22a may have a spherical shape or an elliptical shape, and is preferably spherical. The size (diameter) of this reflective bead 22a is not limited. Depending on the product or purpose applied, the reflective bead 22a is preferably spherical, for example having a diameter D of 1.0 μm (micrometer) to 2.0 m. The reflective bead 22a may preferably have a diameter D of 10 μm to 1,000 μm, more preferably 20 μm to 40 μm.

In addition, the support layer 24 may have a bonding force for embedding and supporting (fixing) the reflective beads 22a as described above. The support layer 24 preferably further has reflection characteristics in addition to the bonding force.

The support layer 24 may be formed by fixing (curing) a metal paste to have reflective properties according to the first embodiment. In this case, the metal paste includes metal particles and a binder. The metal particles are for reflective properties, which may be selected from, for example, aluminum (Al), nickel (Ni), zinc (Zn), tin (Sn), or alloys thereof, but are not limited thereto. . The metal particles are preferably aluminum (Al) or an alloy thereof. In addition, the binder embeds and supports (fixes) the reflective bead 22a while bonding the metal particles to each other, which may be adhesive. The binder may be selected from, for example, natural resins and synthetic resins, and for example, at least one adhesive resin selected from acrylic, urethane, silicone, epoxy, polyvinyl chloride, polyethylene, polyester, and the like may be used. Can be.

In addition, the support layer 24 may have a laminated structure including at least two layers according to the second embodiment. The support layer 24 may specifically include a metal reflective layer for reflective characteristics and a binder layer formed on the metal reflective layer. At this time, the reflective bead 22a is embedded and supported (fixed) in the binder layer. The kind of binder which comprises such a binder layer can use adhesive resin as demonstrated in the said metal paste. The metal reflective layer is formed by depositing a metal under the binder layer, and the metal constituting the metal reflective layer may be a metal as described in the metal particles. In this case, the metal reflective layer may be, for example, sputtering, E-beam evaporation, chemical vapor deposition CVD; It may be formed by a thin film deposition method such as Chemical Vapor Deposition (PVD) or Physical Vapor Deposition (PVD).

In addition, the support layer 24 may include at least one selected from white pigment and pearl according to the third embodiment. Specifically, the support layer 24 may include a binder selected from natural resins and synthetic resins, and a white pigment and / or pearl for reflecting the white color. In this case, the binder may be one or more adhesive resins selected from, for example, acrylic, urethane, epoxy, polyvinyl chloride, polyethylene, polyester, and the like as described above. And the white pigment is not limited as long as it is white. If the support layer 24 comprises a white pigment as above, providing a white background results in a sharper printed image and facilitates identification.

The reflective beads 22a are embedded in a structure protruding from the reflective film 20 as shown in the figure. Specifically, only a part of the diameter D of the reflective bead 22a is embedded in the support layer 24, and the rest protrudes (exposes) to the surface of the support layer 24. At this time, the reflective bead 22a may be about one third to two thirds of the diameter D protrude. Specifically, the height H of the reflective bead 22a protruding from the surface of the reflective film 20, that is, the surface of the support layer 24 may be about 1/3 to 2/3 of the diameter D. Hereinafter, the height H of the reflective bead 22a which protrudes on the surface of the reflective film 20 is abbreviated as "protrusion height." For example, assuming that the diameter D of the reflective bead 22a is 90 µm, the protrusion height H is preferably 30 µm to 60 µm. In the case of having the protruding height H in this range, the coupling force can be realized with good reflection brightness. Specifically, when the protrusion height H is less than one third of the diameter D, it is difficult to achieve good reflection luminance. In addition, when the protrusion height H exceeds 2/3 of the diameter D, the bonding force with the support layer 24 may be weakened, and the reflective bead 22a may be separated. In view of this point, it is more preferable that the protrusion height H is 1/2 of the diameter D. That is, as for the reflective bead 22a, it is more preferable that half of the diameter is embedded in the support layer 24, and the other half protrudes on the support layer 24.

In addition, the reflective film 20 as described above may be manufactured by various methods. The reflective film 20 can be manufactured in the same manner as usual. For example, the reflective film 20 is formed by applying a resin on a carrier film to form a separation layer, and then embedding the reflection beads 22a to an appropriate depth on the separation layer, and then onto the reflection beads 22a. By forming the support layer 24 and then separating the carrier film and the separation layer from the reflective beads 22a.

The ink fixing layer 30 is for forming (printing) the printing layer 40, which is formed on the reflective bead 22a. The ink fixing layer 30 is specifically formed on the reflective film 20, and is formed by coating the surface on which the reflective beads 22a protrude as shown in FIG. 2. Ink is deposited on the surface of the ink fixing layer 30 when the printing layer 40 is formed, that is, during printing.

The ink fixing layer 30 may be printed on its surface. The ink fixing layer 30 has a good bonding force with the reflective bead 22a, and it is more preferable if the ink can be fixed in an optimal state. The ink fixing layer 30 may be formed by coating a composition including an adhesive resin, for example, a silicone resin, polyurethane (PU) resin, melamine resin, polyvinyl chloride (PVC) resin, polyvinyl alcohol A composition comprising one or more resins selected from (PVA) resins, acrylic resins, and the like may be coated and formed.

The ink fixing layer 30 may be formed by coating the ink fixing composition comprising the resin listed above as a base resin and further including an ink primer. At this time, the ink primer is for good fixation of the ink, it may be preferably selected from the components included in the ink for forming the printing layer (40). The ink primer is not particularly limited, but is included in a conventional ink composition and may include one or more selected from wetting agents, surfactants, and the like.

More specifically, the ink fixing composition may include the resins listed above, that is, silicone resins, polyurethane (PU) resins, melamine resins, polyvinyl chloride (PVC) resins, polyvinyl chloride (PVC) resins, and polyvinyl alcohol ( One or more base resins selected from PVA) resins, acrylic resins, and the like; Ink primers; And including a solvent, based on 100 parts by weight of the base resin, the ink primer may include 0.1 to 50 parts by weight and a solvent 30 to 150 parts by weight. The ink primer may include a humectant and a surfactant, and the humectant may be included in an amount of 0.05-30 parts by weight, and the surfactant may be included in an amount of 0.05-20 parts by weight, based on 100 parts by weight of the base resin. When the ink fixing layer 30 is formed using the ink fixing composition composed of such components and contents, the ink can be fixed in an optimal state without disturbing the reflected brightness.

In this case, the wetting agent is, for example, glycerin, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, hexylene glycol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol , 2-butene-1,4-diol and 2-methyl-2-pentanediol and the like may be used, and the surfactant may be, for example, polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl One or more selected from the group consisting of ethers, polyglycerol fatty acid esters, sorbitan fatty acid esters and the like can be used. And the solvent may be used, for example, one or more selected from water, ethanol, isopropanol, butanol and pentanol.

In addition, the ink primer may further include an inorganic filler in addition to the humectant and the surfactant, and the inorganic filler may be, for example, silica, clay, talc, diatomaceous earth, zeolite, calcium carbonate, alumina, zinc oxide and titanium oxide. And one or more selected from the like. And the inorganic filler may be included, for example, 0.1 to 10 parts by weight based on 100 parts by weight of the base resin. In addition, the inorganic filler may have a fine size, which may be, for example, 2.0 μm or less, for example, having a fine size of 0.01 μm to 2.0 μm.

The method of forming the ink fixing layer 30 is not limited, and it may be formed by various coating (or printing) methods. The ink fixing layer 30 may include, for example, methods such as spray coating, comma knife coating, gravure coating, and slot die coating. UV coating method using the same may be formed by coating one or more times in one or more methods selected. Preferably, after coating the ink fixing composition, curing drying in a aging chamber maintained at 40 ° C. to 50 ° C. for about 20 hours to 30 hours is preferable for stable settlement of the ink.

The printing layer 40 is formed on the ink fixing layer 30 as described above by a printing method, the composition of the ink constituting this is not limited. The ink may have a composition including at least four primary colors of C (Cyon), M (Magenta), Y (Yellow) and K (Black) as usual, for example, and may further contain other colorants (dyes and pigments) can do. The ink may be, for example, the four primary color bodies; Fixing resin and ink primer may be included. In this case, the type of the ink primer may be the same as described in the ink fixing layer 30. The fixing resin may be selected from, for example, polyurethane (PU), silicone resin, melamine resin, polyvinyl chloride (PVC), polyvinyl alcohol (PVA), and the like.

More specifically, for example, the print layer 40 may be obtained by mixing the four primary color pigments (C, M, Y and K), a fixing resin (for example, PU), and an ink primer. A mixture obtained by mixing the medicine and the curing agent in a weight ratio of 100: 8 may be obtained, and then, may be formed by using an ink in which the mixture is diluted in a diluting solvent in which toluene and methyl ethyl ketone (MEK) are mixed in a weight ratio of 5: 5. . At this time, the ink may be mixed with 60 to 70% by weight of the mixture and 30 to 40% by weight of the diluting solvent.

The ink may further include, for example, carboxyl cellulose as a viscosity modifier in addition to the above components. The composition of the ink in the present invention is not limited, which may be based on the composition commonly used in the printing field.

In addition, various images may be implemented in the printed layer 40 through various colors and patterns. The image embodied in the printed layer 40 is not limited, and for example, it may be represented by a character, a figure, a picture, a picture, or a combination thereof. In addition, the printing layer 40 may be formed by various printing methods. For example, the print layer 40 is formed through UV offset printing, UV gravure printing, UV seeding printing, screen printing, digital photo-output (solvent, aqueous, UV, etc.), sublimation or transfer of the printed image. It may be, but is not limited thereto.

The transparent protective layer 50 protects the print layer 40 as described above. The printed layer 40 may be deformed, peeled off or chipped by an external force, for example, by an external force such as moisture or impact. The transparent protective layer 50 is formed on the printed layer 40. This prevents the above phenomenon. The transparent protective layer 50 is formed by coating a transparent resin. The resin constituting the transparent protective layer 50 may use a heat curable or UV curable, which is preferably no yellowing after a long time. In view of this, the transparent protective layer 50 is coated with one or more transparent resins selected from, for example, silicone resin, polyurethane (PU), acrylic resin, epoxy resin, polyvinyl chloride (PVC), polyester, and the like. Can be formed.

Preferably, the transparent protective layer 50 has waterproofness to prevent moisture penetration. To this end, the transparent protective layer 50 may include at least one non-hydrophilic resin selected from a silicone resin and polyurethane (PU) having a good waterproof property as a base resin.

In addition, the transparent protective layer 50 may further include a separate waterproofing agent. Specifically, the transparent protective layer 50 may be formed by coating the transparent resin composition further comprising a waterproofing agent as a base resin, but the above-mentioned transparent resin. In this case, the waterproofing agent may be at least one selected from bentonite, silicon-based (organo polysiloxane, etc.), urethane-based (polyurethane, etc.) and the like.

According to the present invention described above, it has a laminated structure in which the print layer 40 is located on the reflective bead 22a, the surface curved structure 100a corresponding to the projecting structure of the reflective bead 22a as described above By having 100b), the reflection brightness as well as the discriminating power of the printed image are excellent.

More specifically, the printed reflective sheet 100 according to the present invention, as shown in Figure 2, the ink fixing layer 30, the printing on the upper surface of the reflective bead 22a, that is, the surface protruding the reflective bead 22a The layer 40 and the transparent protective layer 50 are sequentially stacked, and the ink fixing layer 30, the printing layer 40, and the transparent protective layer 50 have a curved structure corresponding to the reflective bead 22a. Is formed. Accordingly, the surface of the printed reflective sheet 100 according to the present invention, that is, the surface viewed by the observer (the surface on which light is incident) is a protrusion structure corresponding to the protrusion (exposure) structure of the reflective bead 22a, It has surface curved structure 100a (100b) which consists of 100a and the recessed part 100b. For this reason, according to the present invention, it is possible to identify the printed layer 40 at a long distance while having excellent reflection luminance. That is, while having a high reflection luminance implemented in the open type, it is excellent in the discriminating power of the printed image.

At this time, in forming the ink fixing layer 30, the printing layer 40 and the transparent protective layer 50, as in the present invention, when not formed in a curved structure, but formed in a plane, it is a printed image The discriminative power of may be good, but the visibility, which can be said to be the main purpose of the reflective sheet 100, is remarkably inferior. That is, it becomes a plane which prevents the refraction of beads, and the reflection luminance is significantly lowered. In addition, when the printed layer 40 is formed below the reflective bead 22a as in the related art, it is difficult to identify the printed image at a long distance as described above.

However, according to the present invention, in the case of forming the surface curved structures 100a and 100b on the reflective beads 22a as described above, it is an open type structure and has high reflection luminance. That is, the surface of the reflective sheet 100 in the form of a reflective bead 22a protruding in the light incident direction, more specifically, the ink fixing layer 30, the printing layer 40 and the transparent protective layer 50 in the form of beads To maintain high reflection brightness. In addition, the ink may be well seated by the ink fixing layer 30 to realize a clear image, and the printing layer 40 may be positioned on the reflective bead 22a to provide excellent identification of the printed image even at a distance.

At this time, according to a preferred embodiment, the ink fixing layer 30 has a uniform thickness (T) on the entire surface of the reflective film 20 so as to achieve high reflection luminance through the surface curved structures 100a and 100b. It is good to have Specifically, referring to FIG. 2, the ink fixing layer 30 is formed on the reflective film 20, and is uniform along the surface of the reflective film 20 to have surface curved structures 100a and 100b. It is preferable to form the thickness T (T30).

In addition, the ink fixing layer 30 may satisfy Equation 1 below.

[Equation 1]

T ≤ 1 / 2H

[Equation 1 above,

 T is the thickness T30 of the ink fixing layer 30,

H is the height of the reflective bead 22a projecting (exposed) on the surface of the reflective film 20.]

Specifically, the ink fixing layer 30 is preferably 0 <T (T30) ≤ 1 / 2H, more preferably 0 <T (T30) ≤ 1 / 3H. In addition, the ink fixing layer 30 may vary depending on the diameter D of the reflective bead 22a, but satisfies Equation 1, but has a thickness T (T30) of less than or equal to a micrometer (μm). It is good.

According to a preferred embodiment, the ink fixing layer 30 has a thickness (T) (T30) of less than 300㎛, more specifically 0.1㎛ ~ 300㎛ as micrometer (㎛) or less. In this case, when the thickness T (T30) of the ink fixing layer 30 is less than 0.1 μm, the thickness may be so thin that ink fixing characteristics may not be good when the printing layer 40 is printed. At the same time, if the thickness is too thin, the discriminating power of the printed image may be somewhat lowered by the reflected luminance. When the thickness exceeds 300 m, the thickness is too thick, and it may be difficult to form the print layer 40 and the transparent protective layer 50 with the surface bending structures 100a and 100b. In addition, if the thickness is too thick, the reflected luminance may be lowered. In view of this point, it is more preferable that the ink fixing layer 30 has a thickness T (T30) of 2.0 µm to 100 µm.

In addition, the printed layer 40 and the transparent protective layer 50 may be formed to have a uniform thickness T as above.

Specifically, the printed layer 40 also has a uniform thickness (T) on the surface of the reflective film 20. More specifically, the printing layer 40 may be formed to have a uniform thickness T (T40) along the entire surface of the ink fixing layer 30. The printed layer 40 may satisfy Equation 2 below.

&Quot; (2) &quot;

T ≤ 1 / 2H

[Equation 2 above,

 T is the thickness (T40) of the printed layer 40,

H is the height of the reflective bead 22a projecting (exposed) on the surface of the reflective film 20.]

Specifically, the printed layer 40 is preferably 0 <T (T40) ≤ 1 / 2H, more preferably 0 <T (T40) ≤ 1 / 3H. This printed layer 40 may also vary depending on the diameter D of the reflective bead 22a, but as a thickness T (T40) of less than or equal to micrometer (μm), for example, less than or equal to 300 μm, which is a more specific example. For example, it is preferable to have thickness T (T40) of 5.0 micrometers-300 micrometers. In this case, when the thickness T (T40) of the print layer 40 is less than 5.0 μm, the print thickness may be too thin, and thus image identification may not be good. When the thickness exceeds 300 μm, it may be difficult to form the transparent protective layer 50 into the surface curved structures 100a and 100b because the thickness is too thick. In view of this point, it is more preferable that the printed layer 40 has a thickness T (T40) of 10.0 µm to 150 µm.

In addition, even in the case of the transparent protective layer 50 may have a uniform thickness (T) on the surface of the reflective film (20). More specifically, the transparent protective layer 50 may be formed to have a uniform thickness T (T50) along the surface of the printed layer 40. In addition, the transparent protective layer 50 may satisfy Equation 3 below.

&Quot; (3) &quot;

T ≤ 1 / 2H

[Equation 3 above,

 T is the thickness (T50) of the transparent protective layer 50,

H is the height of the reflective bead 22a projecting (exposed) on the surface of the reflective film 20.]

Specifically, the transparent protective layer 50 is preferably 0 <T (T50) ≤ 1 / 2H, more preferably 0 <T (T50) ≤ 1 / 3H. Such a transparent protective layer 50 may also vary depending on the diameter D of the reflective bead 22a, but as a thickness T (T50) of less than or equal to micrometer (μm), for example, 300 μm or less, more specific example For example, it may have a thickness T (T50) of 0.1 μm to 300 μm. In this case, when the thickness T (T50) of the transparent protective layer 50 is less than 0.1 μm, the thickness may be so thin that the protective function of the printed layer 40 may be insignificant. If it exceeds 300 탆, the thickness is too thick, which makes it difficult to form the surface curved structures 100a and 100b, and the reflection brightness can be lowered. In view of this point, it is more preferable that the transparent protective layer 50 has a thickness T (T50) of 2.0 µm to 100 µm.

In addition, the printed reflective sheet 100 according to the present invention has a three-dimensional volume by the elastic substrate 80 selected from a foam or rubber, as described above, wherein the elastic substrate 80 is thick to have a good volume It is good to secure. The elastic substrate 80 may have a thickness that occupies 50% to 80% of the total thickness when the total thickness of the printed reflective sheet 100 according to the present invention is 100, so that a good sense of volume is achieved. have.

Meanwhile, as shown in FIG. 2, the printed reflective sheet 100 according to the present invention may further include an adhesive resin layer 90 formed under the elastic substrate 80 according to an exemplary embodiment. . The printed reflective sheet 100 according to the present invention may be attached to an adherend such as clothing P (see FIG. 3) through a high frequency method or a high temperature press method, wherein the adhesive resin layer 90 is adhered to the adherend (P). ) Can be attached by heat fusion.

The adhesive resin layer 90 is not limited as long as it has adhesiveness. The adhesive resin layer 90 may include an adhesive selected from natural resins, synthetic resins, and the like, and specific examples thereof include polyvinyl chloride (PVC), polyolefin, polyurethane, acrylic, ethylene vinyl acetate (EVA), and epoxy. One or more adhesives selected from the system and the like.

In this case, the adhesive resin layer 90 may be a polyurethane-based hot melt adhesive having good elasticity (elasticity), in consideration of characteristics of textile products such as clothing and circular retention after washing. In addition, the adhesive resin layer 90 may be attached to the adherend (P) by heat fusion as described above, in consideration of such heat fusion properties it is preferable to use a low melting point resin adhesive. For example, polyolefin type, such as polyethylene (PE) and polypropylene (PP), and low melting resin adhesive, such as ethylene vinyl acetate (EVA), can be used.

In addition, as shown in FIG. 2, the printed reflective sheet 100 according to the present invention may further include a base sheet 60 formed under the adhesive resin layer 90 according to an exemplary embodiment. .

The base sheet 60 may be formed to have mechanical properties such as dimensional stability during the formation of the print layer 40 and the like while protecting the adhesive resin layer 90. The base sheet 60 may be selected from, for example, paper materials, synthetic resin materials, and fiber materials.

For example, the base sheet 60 may use a synthetic resin film including at least one resin selected from polyester, polyolefin, polyurethane, polyvinyl chloride, polyimide, and acrylic. More specifically, for example, the base sheet 60 may include polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), polyethylene (PE), and polypropylene. (PP), polyurethane (PU), polyvinyl chloride (PVC), polyimide (PI), polycarbonate (PC), polyacrylic (PA), ethylene vinyl acetate (EVA) Synthetic resin film containing at least one resin selected from can be used. The base sheet 60 may be a fiber sheet such as woven or non-woven formed from, for example, cotton fiber, polyester fiber, nylon fiber and blended fiber thereof.

In addition, the base sheet 60 may be peeled off or removed when applied to the product. Specifically, when attached to the adherend (P) as described above, the adherend (P) and the adhesive resin layer 90 may be attached by heat fusion, wherein the base sheet 60 is an adhesive resin layer ( 90) can be peeled off and removed. To this end, the base sheet 60 may have a release property (peelability). For example, at least one side of the base sheet 60 may be released. More specifically, the base sheet 60 may include a sheet base 62 and a release layer 64 coated on at least one side of the sheet base 62 as shown in FIG. 2.

At this time, the sheet base 62 may be selected from the above-described paper material, synthetic resin material and fiber material. And the release layer 64 is bonded to the adhesive resin layer 90, which may be composed of, for example, a silicone composition which is advantageous in release properties.

3 is a cross-sectional view of the printed reflective sheet 100 according to the second aspect of the present invention and a state diagram of use thereof.

Referring to FIG. 3, the printed reflective sheet 100 according to the present invention may be attached to the adherend P by thermal pressurization by a high frequency or high temperature press. More specifically, the printed reflective sheet 100 according to the present invention may be attached to the adherend P by thermal pressing. In this case, as shown in FIG. 3, the base sheet 60 formed under the adhesive resin layer 90 may be peeled off or removed. After peeling and removing the base sheet 60 in this manner, the adhesive resin layer 90 is brought into close contact with the adherend P, and heat and pressure are applied from above. Thereby, the adhesive resin layer 90 melts by heat, and aims at the adhesive force with the to-be-adhered body P. FIG.

According to a preferred embodiment, the printed reflective sheet 100 according to the present invention is preferably formed with a three-dimensional pattern 110 for the three-dimensional texture as illustrated in FIG. The three-dimensional pattern 110 is embossed or engraved on the surface of the printed reflective sheet 100 according to the present invention, that is, the surface facing the viewer. 3 illustrates an intaglio three-dimensional pattern 110. The three-dimensional pattern 110 is formed by pressing the upper portion of the transparent protective layer (50).

The three-dimensional pattern 110 may be formed by, for example, a template 200 as illustrated in FIG. 3. In this case, the template 200 has a molding 210 corresponding to the three-dimensional pattern 110. If the molding 210 is embossed, the three-dimensional pattern 110 is formed in an intaglio. The template 200 is pressed onto the transparent protective layer 50. The template 200 may be directly stacked on the transparent protective layer 50 and pressed.

 In forming the three-dimensional pattern 110 by stacking and pressing the template 200 as described above, it is preferable to form the three-dimensional pattern 110 while applying heat to the template 200 through a high frequency or heat supply means. In addition, in order to cleanly cut and finish the end of the printed reflective sheet 100, the edge of the template 200 may be a sharp shape such as a blade.

According to the present invention, the embossed or embossed embossed pattern 110 implements a more excellent three-dimensional texture by the elastic substrate 80. That is, the printed reflective sheet 100 according to the present invention has a sense of volume by the elastic substrate 80 as described above, in this case, when the template 200 is pressed, the elastic substrate 80 is elastically contracted so that the three-dimensional pattern The texture of 110 is further improved.

The printed reflective sheet 100 according to the present invention described above may further include a separate functional layer commonly applied in the art, in addition to the components as described above. For example, it may further include a hologram layer for preventing forgery.

In addition, the printed reflective sheet 100 according to the present invention can be applied to various fields. For example, it can be used for various purposes such as protection and safety of the wearer, security, anti-counterfeiting and advertising. That is, in the present invention, the adherend P is not limited. The adherend P includes a semi-finished or finished product, which may be selected, for example, from clothing, shoes, bags, printed matter and various advertisements. 3 illustrates a garment (cloth) as an adherend P. FIG.

On the other hand, the product according to the present invention includes the printed reflective sheet 100 of the present invention as described above. Specifically, the product according to the present invention has a structure to which the printed reflective sheet 100 of the present invention is attached. More specifically, the product according to the present invention includes the adherend P and the printed reflective sheet 100 of the present invention attached to the adherend P. At this time, the adherend P is not limited and may be selected from clothes, shoes, bags, printed matter, and various advertisements as described above. The adherend P may be an object on a flat plate, for example, a printed matter, an advertisement panel, clothing, a bag, or the like.

In addition, the printed reflective sheet 100 is attached to the adherend P by sewing or gluing, or by attaching the edge of the reflective sheet 100 having a predetermined shape to the surface of the adherend P. Can be. For example, an adhesive may be applied to the lower surface of the elastic substrate 80 to be attached to the adherend P. FIG. As described above, the printed reflective sheet 100 may be thermally fused and attached by high frequency or high temperature press. Thermal fusion can be achieved through the adhesive resin layer 90 formed in the lower part of the elastic base material 80, for example.

In addition, according to another embodiment of the present invention, the attachment process and the three-dimensional pattern 110 forming process as described above can be planned at the same time. Specifically, as shown in FIG. 3, after the printed reflective sheet 100 is laminated on the adherend P, the template 200 is pressed on the upper portion of the printed reflective sheet 100, and at the same time, such as high frequency. By applying heat, the formation of the three-dimensional pattern 110 and the adhesion (thermal fusion) through the adhesive resin layer 90 can be simultaneously achieved.

As described above, the printed reflective sheet 100 according to the present invention has a high reflective brightness and is excellent in discriminating power of the printed image. In addition, the three-dimensional texture is realized while having a sense of volume by the elastic substrate (80). Accordingly, the printed reflective sheet 100 according to the present invention can be usefully used for the purpose of identification at night or in the dark, and for the purpose of improving the value of a product such as clothing or advertising.

10 adhesive layer 20 reflective film
22: reflective bead layer 22a: reflective bead
24: support layer 30: ink fixing layer
40: printed layer 50: transparent protective layer
60: base material sheet 80: elastic base material
90: adhesive resin layer 100: printed reflective sheet
110: three-dimensional pattern 200: template
D: diameter of reflective bead T: thickness
T30: thickness of ink fixing layer T40: thickness of printing layer
T50: thickness of the transparent protective layer P: adherend

Claims (15)

Elastic substrates;
An adhesive layer formed on the elastic substrate;
A reflective film formed on the adhesive layer and embedded in a structure in which reflective beads protrude;
An ink fixing layer formed on the reflective film and formed on a surface on which the reflective beads protrude;
A printing layer formed on the ink fixing layer; And
It includes a transparent protective layer formed on the printed layer,
The ink fixing layer, the printing layer and the transparent protective layer is a printed reflective sheet, characterized in that formed in a curved structure corresponding to the projecting structure of the reflective bead.
The method of claim 1,
The printed reflective sheet is a printed reflective sheet, characterized in that the three-dimensional pattern of the embossed or intaglio formed by pressing on the upper portion of the transparent protective layer.
The method of claim 1,
The printed reflective sheet further comprises an adhesive resin layer formed on the lower portion of the elastic substrate.
The method of claim 1,
The elastic substrate is a printed reflective sheet, characterized in that at least one selected from a synthetic resin foam, synthetic elastomer, silicone, polyvinyl chloride and rubber.
The method of claim 1,
The printed reflective sheet is a printed reflective sheet, characterized in that the following equation.

[Mathematical Expression]
T? 1 / 2H
(In the above equation,
T: at least one selected from the thickness of the ink fixing layer, the thickness of the printing layer, and the thickness of the transparent protective layer,
H is the height of the reflective beads protruding from the surface of the reflective film.)
The method of claim 1,
The ink fixing layer has a thickness of 0.1㎛ ~ 300㎛ Printed reflective sheet, characterized in that.
The method of claim 1,
The ink fixing layer comprises a base resin; A printed reflective sheet comprising at least one ink primer selected from wetting agents and surfactants.
The method of claim 7, wherein
The base resin includes at least one resin selected from silicone resin, polyurethane (PU), melamine resin, polyvinyl chloride (PVC), polyvinyl alcohol (PVA) and acrylic resin. .
The method of claim 1,
The transparent protective layer is a printed reflective sheet, characterized in that it comprises at least one resin selected from silicone resin and polyurethane.
The method of claim 1,
The transparent protective layer is a printed reflective sheet, characterized in that it comprises a transparent resin and a waterproofing agent.
The method of claim 1,
The printing layer is a printed reflection sheet, characterized in that formed by the method of UV offset printing, UV gravure printing, UV seeding printing, screen printing, actual output, printed image sublimation or transfer.
The method of claim 1,
The reflective film includes a support layer and reflective beads embedded in a structure protruding on the support layer, wherein the support layer includes at least one selected from white pigments and pearls.
The method according to any one of claims 1 to 12,
The printed reflective sheet further comprises a substrate sheet formed under the adhesive resin layer.
An article characterized in that the printed reflective sheet according to any one of claims 1 to 12 is attached.
15. The method of claim 14,
Wherein the printed reflection sheet is thermally fused and attached by a high-frequency or high-temperature press.

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