KR102335406B1 - Method for manufacturing plastic glazing - Google Patents

Abstract

The present invention relates to a manufacturing method of a plastic glazing having excellent reliability by forming a high hardness coating layer. The manufacturing method of a plastic glazing comprises: a base layer supply step of supplying a base layer made of a polycarbonate (PC) resin; an adhesive supply step of applying an adhesive to at least one surface of the base layer; a resin film supply step of seating a resin film on the upper side of the adhesive applied to the base layer; a resin film attaching step of attaching the resin film to the base layer by pressing the supplied resin film; a release film supply step of supplying a release film to be laminated on the resin film; a coating solution application step of applying a coating solution to one surface of the release film supplied to form a coating layer between the resin film and the release film; and a coating layer forming step of forming a coating layer while attaching the release film to the resin film by pressing the release film coated with the coating solution. By the manufacturing method, a high-hardness coating layer is formed on the base layer made of PC to obtain the effect of improving scratch resistance, abrasion resistance, chemical resistance, and light resistance.

Description

Manufacturing method of plastic glazing {METHOD FOR MANUFACTURING PLASTIC GLAZING}

The present invention relates to a method for manufacturing a plastic glazing, and more particularly, to a method for manufacturing a plastic glazing having excellent reliability by forming a high hardness coating layer.

Polycarbonate (PC) is a representative thermoplastic material with a thermal deformation temperature of 135°C or higher. It is widely used for many purposes, including

Using the excellent impact resistance, transparency, and moldability of such polycarbonate, it is widely used as a glazing material. In particular, studies are being actively made to apply polycarbonate as a substitute for metal and glass articles in the construction and automobile industries. It provides new uses to the construction and automobile industries by using excellent impact strength, optical transmittance, and moldability that can be applied to various designs.

In particular, in the case of replacing plastic glazing using polycarbonate with glass products in the construction industry, it is not easily damaged, and construction is easy due to light weight, and safety accidents due to damage can be prevented.

And, when the plastic glazing using polycarbonate is replaced with glass products in the automobile industry in the automobile industry, the center of gravity of the vehicle is lowered, thereby enabling safer operation. Moreover, since the weight reduction of the vehicle increases fuel efficiency, the economical advantage is sufficient.

However, polycarbonate, which is considered as an alternative material for glass, is easily scratched and

Therefore, in order to replace the polycarbonate with a glass product, efforts to improve scratch resistance, abrasion resistance, chemical resistance, and light resistance are required.

Korean Patent Registration No. 1727906 (2017.04.12)

The present invention was devised to solve the above problems, and an object of the present invention is to provide a method of manufacturing a plastic glazing having excellent reliability by forming a high hardness coating layer.

In order to achieve the above object, a method of manufacturing a plastic glazing according to a preferred embodiment of the present invention includes a base layer supply step of supplying a base layer made of PC (polycarbonate) resin; an adhesive supply step of applying an adhesive to at least one surface of the base layer; A resin film supply step of seating the resin film on the upper side of the adhesive applied to the base layer; A resin film attachment step of attaching to the base layer by pressing the supplied resin film; a release film supply step of supplying a release film to be laminated on the resin film; a coating liquid application step of applying a coating liquid to one surface of the supplied release film so as to form a coating layer between the resin film and the release film; and a coating layer forming step of forming a coating layer while attaching the release film to the resin film by pressing the release film to which the coating solution is applied.

More specifically, the step of attaching the resin film may include a resin film pressing step in which a plurality of rollers press the resin film; and an adhesive curing step of curing the adhesive by irradiating UV to the resin film.

Here, the resin film pressing step, a first moving step of removing the air bubbles contained by moving the adhesive applied by pressing with a first roller in a first direction; a second moving step of adjusting the thickness by moving the adhesive moved in the first direction in a second direction by pressing with a second roller; and a flattening step of flattening the adhesive by pressing it with a third roller.

In the first moving step, the first roller may be provided as a convex roller whose diameter increases toward the center, and may be configured to move the applied adhesive to the outside.

In addition, the first moving step may be made to use a different deviation of the outer diameter with respect to the center diameter of the first roller in correspondence to the thickness of the adhesive layer.

For example, in the first moving step, when the thickness of the adhesive layer is formed to be 50 to 100 μm, the outer diameter of the first roller may be formed to be 10 to 4 mm smaller than the central diameter.

In the second moving step, the second roller may be provided as a roller having a concave shape whose diameter decreases toward the center, and may be configured to move the adhesive moved outward to the inside.

For example, in the second moving step, the outer diameter of the second roller may be formed to be 0.2 to 0.4 mm larger than the central diameter and used.

In the planarization step, the third roller may be made of a silicone material having a hardness of 60 to 80 and a smooth roller having the same diameter to spread the adhesive flat.

The curing step may be made to cure the adhesive by irradiating ultraviolet rays with a wavelength of 200 to 300 nm with an amount of light of 3000 to 4000 mJ/cm ^{2 .}

The coating solution application step may include: a coating solution discharging step of discharging the coating solution on one surface of the release film through a coating solution discharging device in which the coating solution is stored; A flattening step of flattening the coating solution discharged on one surface of the release film through a coating knife to have a predetermined thickness; and a pre-curing step of preliminarily curing the coating solution spread to a certain thickness so that it does not flow down.

Here, the pre-curing step may be performed to pre-cure the coating solution by applying heat of 70 to 80° C. through a pre-curing device.

The coating layer forming step may include a release film pressing step in which a roller presses the release film; and a coating layer curing step of curing the coating solution by irradiating UV to the release film.

Here, the coating layer curing step may be made to cure the coating solution by irradiating ultraviolet rays with a wavelength of 200 to 300 nm with a light amount of 3000 to 4000 mJ/cm ^{2 .}

In the coating solution application step, the organic-inorganic hybrid compound may be applied as a coating solution.

For example, the coating solution application step may be made to apply a coating solution prepared by chemically bonding silica (Si) to an epoxy resin.

The release film supply step may be made to supply a fluorine release film so that it can be easily peeled off with respect to the adhesive surface with the coating layer.

And, the resin film supply step may be made to supply a PC resin film or a PMMA resin film.

The resin film supply step may be made to supply a resin film in which a plurality of PC films are laminated, a plurality of PMMA films are laminated, or a PC film and a PMMA film are laminated.

For example, the resin film supply step may be made to form and supply a pattern layer on the resin film by any one printing method of silk screen printing, gravure printing, and digital dot printing (DDP).

In this case, the resin film supply step may be made to supply the resin film so that the pattern layer faces the base layer.

The adhesive supply step may be made to supply a certain amount of adhesive through a discharge pump to a discharge device for applying the adhesive to the surface of the base layer from the storage tank in which the adhesive is stored.

And, the adhesive recovery step of recovering the adhesive through a recovery pump from the recovery tray for storing the adhesive flowing down from the base layer to the storage tank; may be made to further include.

According to the manufacturing method of the plastic glazing according to the present invention, a manufacturing method of forming a high hardness coating layer on a base layer made of polycarbonate is provided to obtain the effect of improving scratch resistance, abrasion resistance, chemical resistance, and light resistance can

1 is a cross-sectional view schematically showing a plastic glazing manufactured by a method of manufacturing a plastic glazing in an embodiment of the present invention;
2 is a view schematically showing a method of manufacturing a plastic glazing according to an embodiment of the present invention;
3 is a view schematically showing a method of forming a coating layer on both sides of a base layer in a method of manufacturing a plastic glazing according to an embodiment of the present invention;
4 is a view schematically showing a plurality of rollers used in the step of attaching a resin film in the manufacturing method of plastic glazing according to an embodiment of the present invention;
5 is a plan view schematically showing a plurality of rollers used in the step of attaching a resin film in the manufacturing method of plastic glazing according to an embodiment of the present invention;
Figure 6 is a view schematically showing the path the adhesive moves by a plurality of rollers in the manufacturing method of the plastic glazing according to an embodiment of the present invention;
7 is a view schematically showing an apparatus used in the adhesive supply step in the manufacturing method of plastic glazing according to an embodiment of the present invention;
8 is a view schematically showing a manufacturing method of forming a resin layer in a manufacturing method of plastic glazing according to an embodiment of the present invention;
9 is a view schematically showing a manufacturing method of forming a patterned layer in the manufacturing method of plastic glazing according to an embodiment of the present invention;
10 is a view schematically showing a method of manufacturing by continuously supplying a resin film in the manufacturing method of plastic glazing according to an embodiment of the present invention;
11 is a view schematically showing a method for manufacturing a molded article using a plastic glazing according to an embodiment of the present invention;
12 is a flowchart schematically showing a method for manufacturing a plastic glazing according to an embodiment of the present invention;
13 is a flowchart schematically showing the coating solution application step in the method for manufacturing plastic glazing according to an embodiment of the present invention;
14 is a flowchart schematically illustrating a method for manufacturing a molded article using plastic glazing according to an embodiment of the present invention.

In order to help the understanding of the features of the present invention, it will be described in more detail below with respect to the manufacturing method of the plastic glazing related to the embodiment of the present invention.

In adding reference numerals to the components of the accompanying drawings to help the understanding of the embodiments to be described below, it is noted that the same components are given the same reference numerals as much as possible even though they are indicated in different drawings. . In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a cross-sectional view schematically showing a plastic glazing manufactured by a method of manufacturing a plastic glazing in an embodiment of the present invention, and FIGS. 2 and 3 are views schematically showing a manufacturing method of the plastic glazing, FIG. 4 to 6 are views schematically showing a plurality of rollers used in the step of attaching a resin film in the manufacturing method of the plastic glazing. And, FIG. 7 is a view schematically showing an apparatus used in the adhesive supply step in the manufacturing method of the plastic glazing, and FIGS. 8 and 9 are a manufacturing method of forming a resin layer and a pattern layer in the manufacturing method of the plastic glazing It is a view schematically showing a method, and FIG. 10 is a view schematically showing a method of manufacturing by continuously supplying a resin film in the manufacturing method of the plastic glazing. 11 is a view schematically illustrating a method for manufacturing a molded article using the plastic glazing.

And, FIG. 12 is a flowchart schematically showing a method for manufacturing the plastic glazing, FIG. 13 is a flowchart schematically illustrating a coating solution application step in the manufacturing method of the plastic glazing, and FIG. 14 is a method for manufacturing a molded article using the plastic glazing. It is a schematic flowchart.

1 to 14, the method for manufacturing a plastic glazing according to an embodiment of the present invention includes a substrate layer supply step (S110) of supplying a substrate layer 110 made of a PC (polycarbonate) resin, and the substrate An adhesive supply step (S120) of applying an adhesive 130a to at least one surface of the layer 110, and a resin film for seating the resin film 120 on the upper side of the adhesive 130a applied to the base layer 110 A supply step (S130), a resin film attachment step (S140, S150) of attaching to the base layer 110 by pressing the supplied resin film 120, and a release film to be laminated on the resin film 120 ( 150) in the release film supply step (S160), and a coating solution is applied to one surface of the release film 150 supplied so that a coating layer 140 is formed between the resin film 120 and the release film 150. A coating solution application step (S170), and a coating layer forming step of forming a coating layer 140 while attaching the release film 150 to the resin film 120 by pressing the release film 150 to which the coating solution is applied (S180) , S190).

The base layer supply step (S110) is a step of continuously supplying a pre-fabricated PC film to the base layer 110 . Of course, although not shown in the drawings, the base layer may be continuously supplied through injection molding.

The adhesive supply step (S120) is a step of supplying an adhesive 130a between the base layer 110 and the resin film 120 in order to adhere the resin film 120 to the base layer 110 .

As an example, in the adhesive supply step (S120), a discharge pump 213 from a storage tank 212 in which the adhesive 130a is stored to the adhesive discharging device 211 for applying the adhesive 130a to the surface of the substrate layer 110 . ) can be made to supply a certain amount of adhesive through. That is, since the base layer 110 is continuously supplied, a predetermined amount of the adhesive 130a may be continuously supplied to the upper side of the base layer 110 .

In addition, the method may further include an adhesive recovery step of recovering the adhesive from the recovery tray 214 for storing the adhesive 130a flowing down from the base layer 110 to the storage tank 212 through the recovery pump 215 . have. That is, as shown in FIG. 7 , when the adhesive 130a is applied to the base layer 110 through the adhesive discharging device 211 , the resin film 120 is seated on the upper side of the applied adhesive 130a. After the resin film 120 is pressed by the first roller 221 , the adhesive 130a may flow down to both sides of the base layer 110 . The dripping adhesive may be stored by falling on the recovery tray 214 , and the adhesive stored by falling onto the recovery tray 214 by the recovery pump 215 may be discharged to and stored in the storage tank 212 . Therefore, after the adhesive is sufficiently supplied to the base layer 110 , the adhesive flowing down to both sides of the base layer 110 by the pressing force can be recovered and recycled.

The resin film attaching step (S140, S150) is a step of attaching to the base layer 110 by pressing the resin film 120 supplied to the upper side of the adhesive 130a.

Here, the resin film attaching step (S140, S150) includes a resin film pressing step (S140) in which a plurality of rollers (221, 222, 223) press the resin film 120, and UV to the resin film 120 and an adhesive curing step (S150) of curing the adhesive 130a by irradiating it.

For example, the resin film pressing step (S140) includes a first moving step of removing air bubbles contained by moving the adhesive applied by pressing with a first roller 221 in a first direction, and a second roller 222. It may include a second moving step of adjusting the thickness by moving the adhesive moved in the first direction by pressing in the second direction, and a flattening step of flattening the adhesive by pressing with the third roller 223 .

More specifically, in the first moving step, as shown in FIGS. 4 to 6 , the first roller 221 is provided as a convex roller whose diameter increases toward the center, and the applied adhesive is moved in the first direction. It may be moved to the outside of the phosphorous base layer 110 . Since the adhesive 130a discharged from the discharging device 211 can be applied only to the central region of the base layer 110, the first roller 221 is provided in a convex shape to remove the adhesive applied only to the central region. Both ends of the base layer 110 may be moved to the outside.

In addition, when the adhesive is moved to the outside through the first roller 221 , bubbles contained in the adhesive can be removed, so that non-uniform adhesion caused by the bubbles can be prevented.

The first roller 221 may be provided differently according to the thickness of the adhesive layer to be formed with a deviation of the outer diameter with respect to the central diameter.

For example, when the adhesive layer 130 has a thickness of 50 to 100 μm, it is preferable to form an outer diameter of the first roller 221 smaller than a central diameter by 10 to 4 mm. That is, when the thickness of the adhesive layer 130 is formed to be 50 μm, since the thickness of the adhesive layer 130 is reduced, the outer diameter of the first roller 221 is increased so that the adhesive distributed in the center can move a lot to the outside. It can be formed to be 10 mm smaller than the center diameter.

And, in the second moving step, the second roller 222 is provided as a roller of a concave shape whose diameter becomes smaller toward the center, and the adhesive moved outward in the first direction is transferred to the inner side in the second direction, that is, the substrate layer. It can be moved to the central region of (110).

Here, it is preferable to use the outer diameter of the second roller 222 to be formed 0.2 ~ 0.4mm larger than the central diameter. That is, the second roller 222 moves a part of the adhesive distributed outside of the base layer 110 to the central region of the base layer 110 so that the adhesive is applied over the entire area of the base layer 110 . It can be evenly distributed to some extent. Accordingly, the second roller 222 is made such that the deviation between the outer diameter and the center diameter is not large.

The flattening step is a step of flattening the adhesive by pressing the adhesive evenly distributed through the second roller 222 with the third roller 223, which is a smooth roller having the same diameter.

Here, the third roller 223 functions to flatten the adhesive while pressing the resin film 120 with a certain force, so it is made of a silicone material to have elasticity and has a hardness of 60 to 80 to apply a pressing force. It may be provided as

In this way, as shown in FIG. 6 , the movement path L of the adhesive moves in a wavy pattern so that air bubbles are removed and evenly distributed throughout. That is, it is possible to remove air bubbles contained in the adhesive by moving the adhesive to the outside through the first roller 221, and by moving the adhesive back to the center through the second roller 222, the adhesive is distributed to some extent evenly. Then, the adhesive may be spread evenly through the third roller 223 to evenly distribute the adhesive.

In addition, primary rubbing of the adhesive occurs while moving the adhesive to the outside through the first roller 221 and the second roller 222, and the secondary rubbing of the adhesive occurs while moving inward again. , the adhesive strength of the adhesive may be improved by such an adhesive rubbing phenomenon.

Further, the first roller 221 may be provided as a heat roller heated to a temperature of 80 to 100 ℃.

That is, the adhesive 130a is prepared in a solvent type, and as a solvent, at least one of methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate, and butyl acetate. When either one is used, the solvent may be volatilized through the first roller 221 provided as a heat roller so that the adhesive 130a may be rapidly cured in a subsequent curing step. Of course, the adhesive 130a may be provided in a solvent-free type.

Of course, not only the first roller 221 but also the second roller 222 and the third roller 223 may be provided as heat rollers to be heated.

In the adhesive curing step (S150), the adhesive is applied through the curing device 230 for irradiating UV to the resin film 120 in a state where the adhesive is applied between the base layer 110 and the resin film 120. It is a step of forming the adhesive layer 130 by curing.

At this time, the adhesive curing step (S150) may be made to harden the adhesive by irradiating ultraviolet rays with a wavelength of 200 to 300 nm with an amount of light of 3000 to 4000 mJ/cm ^{2 .} Of course, the conditions for curing the adhesive are not limited thereto, and the curing conditions of the adhesive may be changed in response to the thickness of the adhesive layer 130 and the resin film 120 and process environmental conditions.

The resin film supply step (S130) is a step of supplying a resin film 120 to at least one surface of the base layer 110, as shown in FIG. The resin film 120 is supplied to one side of the substrate layer 110 through a supply roller 216, or the resin film 120 is supplied to both sides of the substrate layer 110 as shown in FIG. , as shown in FIG. 10 may be made to continuously supply the resin film 120 while manufacturing the resin film 120 .

More specifically, the resin film supply step ( S130 ) includes a base layer supply step of supplying a base layer 121 made of a PC film or a PMMA (polymethyl methacrylate) film, and a resin layer on one surface of the base layer 121 . It may include a resin layer forming step of forming the resin layer 122 by coating a resin solution to additionally form.

In the base layer supply step ( S131 ), the base layer 121 may be supplied through the base layer supply roller 310 on which the pre-fabricated base layer 121 is wound. Here, the base layer 121 may be formed of a single PC film or a PMMA film.

The resin layer forming step is, as shown in FIG. 8 , PC or PMMA on one surface of the base layer 121 that is continuously supplied through the base layer supply roller 310 using a gravure printing apparatus 331 . After the resin liquid is applied, the resin liquid is cured while passing through the curing device 350 to prepare the resin layer 122 . Then, the film on which the resin layer 122 is formed on the base layer 121 is wound around the resin film supply roller 321 . Here, when the base layer 121 is made of PC resin, a PMMA resin layer is formed on the base layer 121 , and when the base layer 121 is made of PMMA resin, a PC resin layer is formed on the base layer 121 . It is preferable to form

In addition, the resin film supply step ( S130 ) may further include a pattern layer forming step of forming a specific pattern layer 123 on the other surface of the base layer 121 .

For example, in the pattern layer forming step ( S143 ), a pattern may be formed using a gravure printing apparatus 332 as shown in FIG. 9A . That is, the coating layer 122 is formed on one surface of the base layer 121 and the coating film 120 is continuously supplied through the wound coating film supply roller 321, and the base of the supplied coating film 120 is supplied. Ink is applied to the other surface of the layer 121 through a gravure printing device 332, and the ink is cured while passing through the curing device 350 to form the pattern layer 123, and then another coating film supply roller 322. It can be made to be wound on.

Alternatively, in the pattern layer forming step (S143), as shown in (b) of FIG. 9 , a pattern may be formed using a silk screen printing apparatus or a digital dot printing (DDP) apparatus 340 . That is, the coating layer 122 is formed on one surface of the base layer 121 and the base layer 121 is supplied through the coating film supply roller 321 wound, and the base layer ( 121) is coated with ink through a silk screen printing device or DDP device 340, and the ink is cured while passing through the curing device 350 to form the pattern layer 123, and then another coating film supply roller ( 322) can be made to be wound around.

Here, the ink may be prepared as UV curing ink or resin. That is, when a general ink other than UV curing ink is used, color bleeding may occur.

Of course, in the resin film supply step (S130), after forming the pattern layer 123, it is wound on the resin film supply roller 322 and then supplied to the substrate layer 110 as shown in FIG. 2, or separately As shown in FIG. 10 without being wound on a resin film supply roller, a resin layer 122 is formed on one surface of the base layer 110 that is continuously supplied, and then cured, and a pattern layer is formed on the other surface of the base layer 110 . After forming 123 and curing it, the resin film 120 may be continuously supplied to the base layer 110 so that the pattern layer 123 is seated on the base layer 110 .

And, in the resin film supply step (S130), the resin film 120 is supplied so that the pattern layer 123 faces the base layer 110 . That is, the pattern layer 123 is seated on the base layer 110 , and the resin layer 122 is stacked to be disposed on the outside.

The curing device 350 may be, for example, a device for curing the resin by irradiating ultraviolet (UV) light.

The release film supply step (S160) is a step of supplying the release film 150 to be laminated on the resin film 120.

More specifically, the release film supply step (S160) may be made to continuously supply the release film 150 through the release film supply roller 236 on which the previously manufactured release film 150 is wound. In the step of supplying the release film ( S160 ), a fluorine release film may be supplied so that it can be peeled off with respect to the adhesive surface with the coating layer 140 . That is, the release film 150 is provided to form the coating layer 140 in the manufacturing process, serves to protect the coating layer 140 in the distribution process, and is peeled off from the coating layer 140 after installation. provided to be removed.

The coating solution application step (S170) is a step of applying a coating solution to one surface of the supplied release film 150 so that a coating layer 140 is formed between the resin film 120 and the release film 150.

More specifically, the coating solution application step (S170) is a coating solution discharging step (S171) of discharging the coating solution on one surface of the release film 150 through the coating solution discharging device 231 in which the coating solution is stored, and a coating knife 232. A planarization step (S172) of flattening the coating solution discharged to one surface of the release film 150 through a predetermined thickness to have a predetermined thickness, and a pre-curing device 233 to prevent the coating solution spread to a predetermined thickness from flowing down. It may include a preliminary curing step (S173) of curing.

In the coating solution discharging step ( S171 ), the coating solution discharging device 231 may operate to continuously supply a predetermined amount of the coating solution to one surface of the continuously supplied release film 150 .

And, in the planarization step (S172), the coating solution applied to the release film 150 passes through the coating knife 232 and is evenly spread over the entire surface of the release film 150 while having a predetermined thickness. Here, it may be made to adjust the thickness of the coating solution to be laminated by adjusting the distance between the coating knife 232 and the release film 150 .

In the pre-curing step (S173), the coating solution passes through the coating knife 232 and is preliminarily cured in the pre-curing device 233 so that the coating solution spread to a predetermined thickness does not flow down from the release film 150. That is, the pre-curing step (S173) does not completely cure the coating solution, but applies heat of 70 to 80° C. It can be made to harden aggressively.

Here, the coating solution may be prepared in a solvent type, and the solvent is at least any one of methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate, and butyl acetate. In the case of using one, the solvent may be volatilized through the preliminary curing step ( S173 ) to maintain the shape so as not to flow down while attached to the release film 150 . Of course, the coating solution may be prepared in a solvent-free type.

The coating layer forming step (S180, S190) is a step of forming the coating layer 140 while attaching the release film 150 to the base layer 110 by pressing the release film 150 to which the coating solution is applied.

More specifically, the coating layer forming step (S180, S190) is a release film pressing step (S180) in which the roller 234 presses the release film 150, and a curing device 235 is applied to the release film 150. It may include a coating layer curing step (S190) of curing the coating solution by irradiating UV.

In the step of pressing the release film ( S180 ), the roller 234 presses the release film 150 at a predetermined pressure to flatten the coating solution. In addition, in the step of pressing the release film ( S180 ), the thickness of the coating layer 140 may be adjusted by adjusting the height at which the release film 150 is pressed.

In the coating layer curing step (S190), the coating layer 140 is formed by completely curing the coating solution through the curing device 235 on the release film 150 that has passed the release film pressing step (S180). At this time, in the coating layer curing step (S190), the coating solution can be cured by irradiating ultraviolet rays with a wavelength of 200 to 300 nm with an amount of light of 3000 to 4000 mJ/cm ^{2 .}

Furthermore, the coating solution application step (S170) may be made to apply the organic-inorganic hybrid compound as a coating solution.

In addition, the organic-inorganic hybrid compound may be formed by chemically bonding silica (Si) to an epoxy resin. Here, when the content of silica increases, the hardness increases but flexibility decreases, and when the content of the epoxy resin increases, the flexibility increases but the hardness decreases. .

Here, the organic-inorganic hybrid compound may be formed by chemically bonding an epoxy resin and silica rather than simply mixing them.

A simple mixture of an epoxy resin and silica has the advantage of being easily prepared, but has disadvantages in that the transmittance is poor, the surface hardness is low, and the light resistance, weather resistance and chemical resistance are not good.

In comparison, if the epoxy resin and silica are chemically combined, it is difficult to manufacture, but transmittance can be secured at 89% or more, hardness and flexibility are excellent, light resistance, weather resistance and chemical resistance are excellent, and diffuse reflection And there is an advantage that refraction does not occur.

Therefore, in the plastic glazing according to an embodiment of the present invention, a coating solution in which an epoxy resin and silica are chemically combined is formed as a coating layer.

The plastic glazing 100 manufactured by the manufacturing method of the plastic glazing according to the embodiment of the present invention may be manufactured in, for example, four types.

More specifically, as shown in (a) of Figure 1, a resin film made of a resin layer 122 laminated on the base layer 121 is laminated on the base layer 110 through the adhesive layer 130, and the resin The coating layer 140 and the release film 150 are laminated on the film to manufacture the plastic glazing 100 . At this time, the coating layer 140 is laminated on the resin film, and the release film 150 is laminated to be disposed on the outermost side. Although not shown in the drawings, the resin film, the coating layer 140 , and the release film 150 may be laminated on both surfaces of the base layer 110 .

And, as shown in (b) of FIG. 1 , a resin film formed by laminating a resin layer 122 on one surface of the base layer 121 and a pattern layer 123 on the other surface is applied through the adhesive layer 130 to the substrate. It is laminated on the layer 110 , and the coating layer 140 and the release film 150 are laminated on the resin film to manufacture the plastic glazing 100 . At this time, the pattern layer 123 of the resin film is attached to the adhesive layer 130 and the release film 150 is laminated to be disposed at the outermost side. At this time, as shown in (d) of FIG. 1 , the resin film, the coating layer 140 , and the release film 150 may be laminated on both sides of the base layer 110 .

In addition, as shown in (c) of Figure 1, after the resin film on which the pattern layer 123 is formed on one surface of the base layer 110 is laminated through the adhesive layer 130, the coating layer 140 and the release film ( 150) is laminated, and on the other surface of the base layer 110, a resin film on which a pattern layer is not formed is laminated through an adhesive layer 130, and then a coating layer 140 and a release film 150 are laminated to form a plastic glazing (100). ) can also be prepared.

Here, the release film 150 serves to protect the coating layer 140 during distribution and installation of the plastic glazing 100 , and is provided to be peeled off and removed from the coating layer 140 after installation.

The manufacturing method of a molded article using the plastic glazing manufactured in the above manner includes a sheet cutting step (S210) of cutting the plastic glazing 100 manufactured in a continuous process to a specific size, and heating the cut plastic glazing sheet (S). It includes a sheet preheating step (S220) of preheating with the device 410 and a forming step (S230) of molding the preheated plastic glazing sheet (S) by pressing it in a mold 420 .

In the sheet preheating step (S220), when the plastic glazing sheet (S) is pressed in the mold 420, the surface temperature of the plastic glazing sheet (S) is 200 so that the plastic glazing sheet (S) can be easily deformed without cracking. It is a step of preheating to satisfy ~250℃.

And, the molding step (S230) is to prevent the plastic glazing sheet S from being cooled by the mold 420 while the mold 420 presses the plastic glazing sheet S, the mold ( 420) may be formed by pressing the plastic glazing sheet (S) for 45 to 60 seconds in a state in which the temperature of the plastic glazing sheet (S) is heated to satisfy 60 to 100 °C.

In addition, the method for manufacturing a molded article using a plastic glazing according to an embodiment of the present invention may further include a pattern forming step.

The pattern forming step ( S240 ) may be performed to form a specific pattern by vacuum adsorbing the molded plastic glazing sheet S to the lower mold 432 and then pressing the upper mold 431 . Of course, without separately preparing the pattern forming step (S240), a specific pattern is formed in the mold 420 used in the forming step (S230), and a specific pattern is formed together while molding the plastic glazing sheet (S). may be made to do so.

As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

100: plastic glazing 110: base layer
121: base layer 122: resin layer
123: pattern layer 130: adhesive layer
140: coating layer 150: release film
211: adhesive dispensing device 212: storage tank
213: discharge pump 214: recovery tray
215: recovery pump 216: resin film supply roller
221: first roller 222: second roller
223: third roller 230: curing device
231: coating liquid discharge device 232: coating knife
233: pre-curing device 234: roller
235: curing device 236: release film supply roller
410: heating device 420: mold
431: upper mold 432: lower mold

Claims (23)

A base layer supply step of supplying a base layer made of PC (polycarbonate) resin;
an adhesive supply step of applying an adhesive to at least one surface of the base layer;
A resin film supply step of seating the resin film on the upper side of the adhesive applied to the base layer;
A resin film attachment step of attaching to the base layer by pressing the supplied resin film;
a release film supply step of supplying a release film to be laminated on the resin film;
a coating liquid application step of applying a coating liquid to one surface of the supplied release film so as to form a coating layer between the resin film and the release film; and
A coating layer forming step of forming a coating layer while attaching the release film to the resin film by pressing the release film to which the coating solution is applied;
The step of attaching the resin film,
a resin film pressing step in which a plurality of rollers press the resin film; and
An adhesive curing step of curing the adhesive by irradiating UV to the resin film;
The resin film pressing step,
a first moving step of removing air bubbles contained by moving the adhesive applied by pressing with a first roller in a first direction;
a second moving step of adjusting the thickness by moving the adhesive moved in the first direction in a second direction by pressing with a second roller; and
A flattening step of flattening the adhesive by pressing with a third roller;
A method of manufacturing a plastic glazing comprising a.
delete delete According to claim 1,
The first moving step is
The method of manufacturing plastic glazing, characterized in that the first roller is provided as a convex roller whose diameter increases toward the center, and moves the applied adhesive to the outside.
5. The method of claim 4,
The first moving step is
A method of manufacturing plastic glazing, characterized in that the deviation of the outer diameter with respect to the center diameter of the first roller is varied and used according to the thickness of the adhesive layer.
6. The method of claim 5,
The first moving step is
When the thickness of the adhesive layer is formed to be 50 to 100 μm, the method of manufacturing a plastic glazing, characterized in that the outer diameter of the first roller is formed to be 10 to 4 mm smaller than the central diameter.
According to claim 1,
The second moving step is
The method of manufacturing plastic glazing, characterized in that the second roller is provided as a roller having a concave shape whose diameter becomes smaller toward the center, and the adhesive moved outward is moved inward.
8. The method of claim 7,
The second moving step is
A method of manufacturing plastic glazing, characterized in that the second roller has an outer diameter of 0.2 to 0.4 mm larger than its central diameter.
According to claim 1,
The planarization step is
The third roller is a silicone material having a hardness of 60 to 80, and is provided with a smooth roller having the same diameter, and flattening the adhesive.
According to claim 1,
The curing step is
A method of manufacturing plastic glazing, characterized in that the adhesive is cured by irradiating ultraviolet rays with a wavelength of 200 to 300 nm at an amount of light of 3000 to 4000 mJ/cm ^{2 .}
According to claim 1,
The coating liquid application step,
a coating solution discharging step of discharging the coating solution on one surface of the release film through a coating solution discharging device in which the coating solution is stored;
A flattening step of flattening the coating solution discharged on one surface of the release film through a coating knife to have a predetermined thickness; and
A pre-curing step of preliminarily curing the coating solution spread to a certain thickness so that it does not flow down;
A method of manufacturing a plastic glazing comprising a.
12. The method of claim 11,
The preliminary curing step is
A method of manufacturing plastic glazing, characterized in that it is preliminarily cured by applying heat of 70 to 80° C. to the coating solution through a pre-curing device.
According to claim 1,
The coating layer forming step,
a release film pressing step in which a roller presses the release film; and
A coating layer curing step of curing the coating solution by irradiating UV to the release film;
A method of manufacturing a plastic glazing comprising a.
14. The method of claim 13,
The coating layer curing step,
A method of manufacturing plastic glazing, characterized in that the coating solution is cured by irradiating ultraviolet rays with a wavelength of 200 to 300 nm at an amount of light of 3000 to 4000 mJ/cm ^{2 .}
According to claim 1,
The coating liquid application step,
A method for producing plastic glazing, characterized in that the organic-inorganic hybrid compound is applied as a coating solution.
16. The method of claim 15,
The coating liquid application step,
A method of manufacturing plastic glazing, characterized in that the coating solution prepared by chemically bonding silica (Si) to an epoxy resin is applied.
According to claim 1,
The release film supply step,
A method of manufacturing a plastic glazing, characterized in that by supplying a fluorine release film so that it can be easily peeled off from the adhesive surface with the coating layer.
According to claim 1,
The resin film supply step,
A method for manufacturing plastic glazing, characterized in that supplying a PC resin film or a PMMA resin film.
According to claim 1,
The resin film supply step,
A method for manufacturing a plastic glazing, comprising laminating a plurality of PC films, laminating a plurality of PMMA films, or supplying a resin film in which a PC film and a PMMA film are laminated.
19. The method of claim 18,
The resin film supply step,
A method for manufacturing plastic glazing, characterized in that the resin film is supplied by forming a patterned layer by any one of silk screen printing, gravure printing, and digital dot printing (DDP).
21. The method of claim 20,
The resin film supply step,
A method of manufacturing a plastic glazing, characterized in that the resin film is supplied so that the pattern layer faces the base layer.
According to claim 1,
The adhesive supply step is,
A method of manufacturing plastic glazing, characterized in that a predetermined amount of adhesive is supplied from a storage tank in which the adhesive is stored to a discharge device for applying the adhesive to the surface of the base layer through a discharge pump.
23. The method of claim 22,
an adhesive recovery step of recovering the adhesive from the recovery tray for storing the adhesive flowing down from the base layer to the storage tank through a recovery pump;
Method of manufacturing plastic glazing, characterized in that it further comprises.

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