KR101841212B1 - Reflective coating sheet color printing method for fiber and printed reflective coating sheet that the same way. - Google Patents

Abstract

The present invention relates to a method for printing a non-coating reflective sheet for fibers including multiple reflectors and a support layer and including an adhesive-based adhesive layer on a bottom surface. The method includes a material preparation step (S100) of preparing the non-coating reflective sheet, a protective film, a release film, and a pigment; a fixing step (S200) of laminating and fixing the protective film to the bottom surface of the adhesive layer; a background color application step (S300) of constituting a background color layer by applying an adhesive component-containing background color pigment to the front surface of the reflective sheet after the fixing step; a printing step (S400) of forming a printing layer by applying a pattern and a color by means of a UV printing pigment to the front surface of the reflective sheet after the background color application step; a cutting step (S500) cutting the reflective sheet into a printed shape after the printing step; and a release film adhesion step (S600) of adhering a release film for protection of the printing layer of the reflective sheet after the cutting step. According to the present invention, there can be provided a method for printing a non-coating reflective sheet for fibers and a reflective sheet printed by the method with which the luminance and visibility of the non-coating reflective sheet for fibers can be enhanced and various colors and patterns can be freely realized or expressed.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of printing a non-coated reflective sheet for a fiber, and a reflective sheet printed by the method.

The present invention relates to a method of printing a reflective sheet, and more particularly, to a method of printing an uncoated reflective sheet configured to be capable of expressing various colors on an uncoated reflective sheet composed of a hot melt and a reflector.

BACKGROUND ART [0002] Reflective sheets which reflect incident light (light) in the direction in which they are incident (regular reflection) to improve visibility are widely used. The reflective sheet makes it easy to identify a predetermined pattern or character displayed on the sheet. Usually, reflective sheets are attached to road signs, clothes, shoes, advertising materials, etc. by means of adhesives or adhesive. Reflective sheets, for example, are highly effective in protecting and safeguarding wearers by affixing them to the garments of people working on roads or in dangerous places, such as environmental cleaners, firefighters, construction workers, and the like. In addition, when it is used for a signboard of a roadside, etc., the light emitted from a headlight of an automobile at nighttime operation is reflected to the driver as it is, thereby improving the discrimination power for the road sign.

The reflective sheet is usually classified into a bead type and a micro prism type. The bead type uses a glass bead as a reflector, and the micro prism type uses a prism polyhedron having a regular triangular shape as a reflector.

On the other hand, the micro prism type is formed by shaping a cubic micro prism for a predetermined time, and the retroreflective performance depends on the precision of the prism and the angle of the cube. In the case of the micro prism type, there is a honeycomb pattern and a dot pattern on the surface, which occurs during the process of sticking the blank paper to protect the prism. It has the advantage of reflecting more light than glass bead type and maintaining reflection performance even in rainy weather. In addition, the micro prism has a reflective structure that has a reflective structure behind the glass bead, so that the micro prism has no fear of being damaged even when the surface is scratchy. Therefore, the micro prism type is used for road signs and advertisements because it is suitable for real output because it maintains white light.

In addition, the glass bead type is a principle in which fine glass beads are uniformly applied to a fabric or film to return incident light to the direction of the light source. Particularly, to improve the retroreflective performance, special coating is applied to the back of the glass denture to improve the reflection performance. The light incident on the surface of each glass bead is refracted from the back of the bead and then reflected in the same direction as the direction of the incoming light. Therefore, it is applied to application technology to protect our precious life and property from various safety accidents that may occur in everyday life and industrial field by using characteristics of light in sportswear, night road construction site, security guard, police officer and clothes of firefighter .

In the case of a reflective film applied to a conventional fiber, a technique of printing on a top of a reflective film coated with a synthetic resin on the upper side of a glass bead using a solvent and a sublimation transfer machine and fixing the film by heat is used. Is applied to the coating surface, it takes a long time.

Further, since the printing process may cause blurring phenomenon, the printing may not be performed uniformly, the printed surface is not reflected, and the luminance is lowered. Due to the characteristic of the glass bead type using the aluminum paste, only the dark- There was a difficulty in expressing and implementing various colors.

In order to solve the above-mentioned problems, a conventional developed technology is disclosed in Japanese Patent Application Laid-Open No. 10-1606326 (Mar. 18, 2016) "Open type color reflective sheet and method for manufacturing the same" A bonding layer laminated on one side of the support layer and comprising a binder resin, a pigment and a non-yellowing polyurethane; A reflective layer including a plurality of bead-shaped reflectors adhered to the bonding layer; And a water repellent coating layer laminated on one surface of the reflective layer, and a printing layer selectively formed on one surface or the other surface of the reflective layer, and a manufacturing method thereof.

In the conventional technique as described above, a first printing layer for forming a pattern is formed on one surface of a bonding layer, a reflective layer is formed on a surface of a bonding layer or a printing layer, and a second printing layer is formed on one surface of the reflective layer, And a plurality of processes are required to form each layer, which is a disadvantage.

Open Patent Publication No. 10-1606326 (Mar. 18, 2016) "Open type color reflective sheet and method for manufacturing the same"

An object of the present invention is to provide a method of printing an uncoated reflective sheet for a fiber, which can freely embody or express various colors and patterns while taking advantage of the brightness and visibility of the non-coated reflective sheet for fibers have.

Another object of the present invention is to provide a method of printing an uncoated reflective sheet for fibers that is resistant to sunlight or light by maintaining a high degree of daylight contrast by using UV pigments.

According to an aspect of the present invention, there is provided a method of printing an uncoated reflective sheet for a fiber including a support layer and a plurality of reflectors, and an adhesive layer formed on the bottom surface of the adhesive layer, A material preparation step (SlOO) for preparing a release film and a pigment; A fixing step (S200) of fixing and fixing a protective film on the bottom surface of the adhesive layer; A step S300 of applying a background color to form a background color layer by applying a background color pigment containing a tacky component to the entire surface of the reflective sheet after the fixing step; A printing step (S400) of forming a printing layer by applying patterns and colors using a UV printing pigment on the entire surface of the reflective sheet that has undergone the step of applying the background color; A cutting step (S500) of cutting the reflection sheet having passed through the printing step into a printed shape; And a releasing film sticking step (S600) of sticking the releasing film to protect the print layer of the reflective sheet having passed through the cutting step.

Further, the background color pigment has a viscosity of 5 to 6 mPa.s and a surface tension of 28 to 30 mN / m, and is a UV-curable pigment.

The printing layer pigment may have a color defined by combining four colors of C (cyan), M (magenta), Y (yellow) and K (black) Wherein the pigment is at least one pigment selected from pigments of a color which can not be expressed as a mixture.

According to a further aspect of the present invention, there is provided a reflective sheet printed in the same manner as described above.

In the case of using the reflective film printed by the method and the method of printing the non-coated reflective sheet for fiber according to the present invention, various colors and patterns can be freely implemented or expressed while making the brightness and visibility of the non- .

In addition, by using UV pigment capable of maintaining high sunlight degree, it is possible to reduce the cost of the product by eliminating the need for a separate process for protecting the hue and pattern from the external environment of sunlight and boiling.

1 is a flow chart according to an embodiment of the present invention.
2 is a cross-sectional view according to an embodiment of the present invention.
Fig. 3 is a flowchart for adhering a reflecting sheet according to an embodiment of the present invention to an adherend.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a flow chart according to an embodiment of the present invention, and FIG. 2 is a sectional view according to an embodiment of the present invention.

 A method of printing an uncoated reflective sheet for fibers comprising a support layer (220) and a plurality of reflectors (230) according to the present invention and comprising an adhesive layer (210) comprising an adhesive on the bottom surface, 200, a protective film 100, a release film 300, and a pigment preparation step S100; A fixing step S200 of laminating and fixing the protective film 100 on the bottom surface of the adhesive layer 210; A step of applying a background color (S300) for forming a background color layer (240) by applying a background color pigment containing a tacky component to the entire surface of the reflective sheet after the fixing step; A printing step (S400) of forming a printing layer (250) by applying a pattern and a color using a pigment for UV printing on the entire surface of the reflective sheet having undergone the step of applying the background color; A cutting step (S500) of cutting the reflection sheet having passed through the printing step into a printed shape; And a releasing film (300) sticking step (S600) for sticking the releasing film (300) to protect the printing layer (250) of the reflective sheet after the cutting step.

More specifically, in an uncoated reflective sheet 200 for a fiber comprising a support layer 220 according to the present invention and a plurality of reflectors 230 and an adhesive layer 210 formed on the bottom surface of the adhesive layer 210, A material preparation step (S100) for preparing the uncoated reflective sheet (200), the protective film (100), the release film (300) and the pigment is performed.

The pressure-sensitive adhesive may be selected from the group consisting of polyethylene (LDPE), polyurethane, acrylic, epoxy, ethylene vinyl acetate, rubber, polypropylene, , A polyamide (Polyainde) -based resin, and a polyvinyl chloride-based synthetic resin-containing adhesive.

In addition, a removable type adhesive material or a hot melt type adhesive material may be used to facilitate attachment and detachment of the adherend or to be completely fixed to the adherend.

However, it may preferably be composed of a hot melt type adhesive of polyurethane type which is excellent in stretchability so that it can be adhered to an adherend such as a fiber product through heat press and retained after washing.

The non-coated reflective sheet 200 may include a support layer 220 and a plurality of reflectors 230 on one side of the adhesive. The reflector 230 may be formed of a spherical bead A plurality of reflective sheets each having a structure in which a reflector 230 of a first shape protrudes from the support layer 220 may be formed.

Next, the protective film 100 protects the adhesive formed on the adhesive layer 210 and protects the protective film 100 on the bottom surface of the adhesive layer 210 to prevent separation of each layer of the reflective sheet during printing. A fixing step S200 is performed.

The protective film 100 may be made of a soft synthetic resin, and may be made of a resin having excellent adhesion with the adhesive layer 210 and peeling force. Preferably, a PET film is used, and the reflective surface of the PET film is joined to the adhesive layer 210 of the reflective sheet to fix the reflective sheet.

Next, a background color applying step (S300) for forming a background color layer 240 is performed by applying a pigment of a background color containing tacky substances to the entire surface of the reflective sheet having passed through the fixing step.

The step of applying the background color S300 is a step of applying a color not hindered by the brightness of the reflector 230 to the entire surface of the reflective sheet without interfering with the color of the print layer 250, ≪ / RTI > may be used.

Preferably, the UV curable pigment has a viscosity of 5 to 6 mPa.s and a surface tension of 28 to 30 mN / m so as to firmly maintain the adhesion between the reflector 230 and the print layer 250, A white pigment is preferably used so as not to hinder the brightness of the reflector 230 and the color and the color of the pattern formed in the printing step. The thickness of the reflector 230 may be 0.01 to 2.0 탆 so as not to hinder the brightness of the reflector 230 .

If the viscosity is less than 5 mPa.s, adhesion between the reflector 230 and the print layer 250 is not firm, so that the printed material of the reflective sheet can be easily separated due to external stimuli, , The thickness of the reflective layer 230 is not uniform and the brightness of the reflector 230 can be reduced.

If the surface tension is less than 28 mN / m, the surface tension is too weak to inhibit the brightness of the reflector 230 at the time of coating, and if the surface tension is 30 mN / m or more, the coating is not uniformly applied.

If the thickness of the background color pigment is less than 0.01 탆, the pattern and color of the print layer 250 are not printed clearly because the amount of the background color pigment is small. If the thickness is 2.0 탆 or more, Can be inhibited.

The application of the background color may be carried out using a UV curable pigment such as UV offset printing, UV gravure printing, UV shearing printing, digital photographic output (solvent, aqueous, UV, etc.) But is not limited thereto.

Optionally, a reactive diluent may be added to the background color pigment to adjust the viscosity, curability, and tackiness of the pigment to maintain the adhesion of the reflector 230 and the print layer 250 firmly. The reactive diluent may be one or more reactive diluents selected from among low viscosity, high viscosity monomers and acrylates.

Next, a printing step (S400) of forming a printing layer 250 by applying patterns and colors using a UV printing pigment on the entire surface of the reflective sheet that has undergone the background color application step is performed.

The printing step may include printing patterns and colors to be attached to skin complexes to form a printing layer 250. The printing layer 250 may optionally include C (cyan), M (cyan) One or more colors selected from a combination of four colors of magenta, magenta, yellow and K, and a pigment other than CMYK, such as gold, silver, A pigment may be used, and the thickness may be 0.5 to 3.0 mu m.

If the thickness is less than 0.5 mu m, the printed layer 250 may be thin and the pattern or color to be expressed may not be expressed well, and if the thickness is 3.0 mu m or more, the brightness of the reflector 230 may be deteriorated.

The pigment of the printing layer 250 is a UV curable pigment having a certain amount of daylight reflectance and is configured to be able to be kept long from external stimuli such as sunlight or rain.

The printing layer 250 may be printed using UV offset printing, UV gravure printing, UV sealing printing, digital photoreceptive printing (solvent, aqueous, UV, etc.), but not limited thereto.

Next, a cutting step (S500) for cutting the reflective sheet having passed through the printing step into a printed shape is performed. The cutting step may be performed by a conventional method.

Next, a releasing film 300 sticking step (S600) for sticking the release film (300) to protect the print layer (250) of the reflective sheet after the cutting step is performed.

The release film 300 may be composed of a paper material, a synthetic resin material, a fiber material, or the like coated on one side with a synthetic resin such as a silicone composition. Preferably, a film made of a soft synthetic resin having a thickness of 19 to 122 占 퐉 may be used, more preferably a PET film may be used.

If the thickness of the release film 300 is less than 19 μm, the printing layer 250 can be easily separated by external stimulation. If the thickness of the release film 300 is more than 122 μm, the film is too thick, There is a disadvantage that flexibility is low.

The release film 300 may be formed by laminating the adhesive layer between the printing layer 250 of the reflective sheet and the release film 300 and the size of the release film 300 And the reflective sheet may be configured to be larger than the cut size to facilitate separation of the release film 300. [

Hereinafter, a method of printing an uncoated reflective sheet 200 for a fiber according to the present invention and a specific method of adhering a printed reflective sheet to an adherend using the method will be described in more detail with reference to the accompanying drawings .

Referring to FIG. 3, there is shown a flowchart for adhering a reflective sheet printed by a method according to the present invention to an adherend. First, the protective film 100 formed on the bottom of the adhesive layer 210 is removed, (S700) in which the adhesive layer 210 is attached to the complex so that the adhesive can be bonded to the complex.

Thereafter, the adhesive sheet is subjected to an adhesive and fixing step (S800) in which the reflective sheet attached to the adherend is pressed by a hot-heated mechanism to fix the reflective sheet to the adherend so that the reflective sheet can be fixedly adhered to the adherend.

Then, the release film 300 is removed (step S900), which removes the release film 300 adhering to the front surface of the reflective sheet.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. There will be.

S100: material preparing step S200: fixing step
S300: Apply background color S400: Print step
S500: Cutting step S600: Release film adhesion step
S700: attaching step S800: adhesive fixing step
S900: Release film removal step
100: protective film 200: uncoated reflective sheet (210, 220, 230)
210: adhesive layer 220: support layer
230: reflector 240: background color layer
250: printing layer 300: release film

Claims (4)

A method of printing an uncoated reflective sheet for fibers comprising a support layer and a plurality of reflectors, the adhesive layer comprising a pressure sensitive adhesive on the bottom surface,
Preparing a material for preparing the uncoated reflective sheet, the protective film, the release film and the pigment (S100);
A fixing step (S200) of fixing and fixing a protective film on the bottom surface of the adhesive layer;
(S300) of applying a background color pigment containing a tacky substance to the entire surface of the reflective sheet having undergone the fixing step;
A printing step (S400) of forming a printing layer by applying patterns and colors using a UV printing pigment on the entire surface of the reflective sheet that has undergone the step of applying the background color;
A cutting step (S500) of cutting the reflective sheet having passed through the printing step into a printed shape; And
And a release film sticking step (S600) of sticking the release film to protect the print layer of the reflective sheet that has undergone the cutting step,
The background color pigment is a UV curable pigment having a viscosity of 5 to 6 mPa.s and a surface tension of 28 to 30 mN / m,
The printing layer pigment may be a color defined by combining four colors of C (cyan), M (magenta), Y (yellow) and K (black) and a color mixture of gold, silver, At least one pigment selected from pigments of color which can not be expressed,
Wherein the thickness of the print layer is 0.5 to 3.0 占 퐉, the thickness of the background color layer is 0.01 to 2.0 占 퐉, and the thickness of the release film is 19 to 122 占 퐉. delete delete A reflective sheet printed by claim 1.

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