KR102383538B1 - Method for manufacturing plastic glazing and molded product using the same - Google Patents

Abstract

The present invention relates to a method for manufacturing plastic glazing having excellent reliability by forming a high-hardness coating layer. The method for manufacturing plastic glazing comprises: a base layer supply step of supplying a base layer made of PC resin; an adhesive supply step of applying an adhesive to the base layer in the width direction of the base layer; a coating film supply step of seating a coating film on the upper side of the adhesive applied to the base layer; and an attachment step of pressurizing the supplied coating film and attaching the coating film to the base layer. In the manufacturing method, it is possible to obtain an effect of improving scratch resistance, abrasion resistance, chemical resistance, and light resistance by forming the coating layer of high hardness on the base layer made of PC.

Description

Manufacturing method of plastic glazing and molded product manufacturing method using the same

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

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 for manufacturing a plastic glazing having excellent reliability by forming a high hardness coating layer and a method for manufacturing a molded article using the same.

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 the base layer in the width direction of the base layer; And a coating film supply step of seating the coating film on the upper side of the adhesive applied to the base layer; and an attachment step of attaching to the base layer by pressing the supplied coating film.

Here, the adhesive supply step may be made to supply a certain amount of adhesive to a discharge device for applying the adhesive to the surface of the base layer by injecting air at a certain pressure into the storage tank in which the adhesive is stored.

And, in the adhesive supply step, the discharge device is disposed in the width direction of the base layer, and a plurality of discharge holes are formed at regular intervals in the discharge device to apply a uniform amount of adhesive in the width direction of the base layer it can be done to

The method may further include an adhesive planarizing step of planarizing the adhesive applied to the base layer using a planarizing roller or a squeegee.

And, the adhesive recovery step of recovering the adhesive flowing down from the base layer; may be made to further include.

The attaching step may include a pressing step in which a plurality of rollers press the coating film; and a curing step of curing the adhesive by irradiating UV to the coating film.

More specifically, the pressing step may include: 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 it with a third roller.

And, in the first moving step, the first roller may be provided as a convex roller whose diameter increases toward the center, so as to move the applied adhesive to the outside.

In addition, in the first moving step, the deviation of the outer diameter with respect to the center diameter of the first roller may be varied and used in correspondence to the thickness of the adhesive layer.

Furthermore, 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.

And, in the second moving step, the outer diameter of the second roller may be formed to be 0.2 ~ 0.4mm larger than the center diameter to be 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 .

Furthermore, the attaching step may further include a preheating step of preheating the coating film before the curing step after the pressing step.

The coating film supply step, a PC film, a polymethyl methacrylate (PMMA) film, a PC / PMMA film, or a base layer supply step of supplying a base layer prepared with a PET (polyethylene terephthalate) film; and a coating layer forming step of forming a coating layer by coating an organic-inorganic hybrid compound on one surface of the base layer.

Here, the supplying of the base layer may be performed to form the base layer by laminating at least two or more of a PC film, a PMMA film, a PC/PMMA film, and a PET film.

In addition, the coating layer forming step may consist of coating an organic-inorganic hybrid compound prepared by chemically bonding silica (Si) to an epoxy resin.

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

Furthermore, the coating film supply step may further include a pattern layer forming step of forming a specific pattern layer on the other surface of the base layer.

Here, the step of forming the pattern layer may be performed by forming the pattern layer by any one of silk screen printing, gravure printing, and digital dot printing (DDP).

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

And, in order to achieve the above object, a method for manufacturing a molded article using a plastic glazing according to a preferred embodiment of the present invention includes a sheet cutting step of cutting the plastic glazing to a specific size; A sheet preheating step of preheating the cut plastic glazing sheet; and a molding step of molding the preheated plastic glazing sheet by pressing it in a mold.

Here, the sheet preheating step may be made to preheat the surface temperature of the plastic glazing sheet to satisfy 120 ~ 250 ℃.

In addition, the forming step may be performed by pressing the plastic glazing sheet for 45 to 65 seconds in a state in which the temperature of the mold is heated to satisfy 60 to 100 ° C.

Furthermore, the method for manufacturing a molded article using plastic glazing according to a preferred embodiment of the present invention includes: a pattern forming step of forming a specific pattern by vacuum adsorbing the molded plastic glazing sheet to a lower mold and then pressing the upper mold to form a specific pattern; can be done by

According to the method for manufacturing a plastic glazing according to the present invention and a method for manufacturing a molded article using the same, a manufacturing method of forming a high hardness coating layer on a base layer made of polycarbonate is provided to improve scratch resistance, abrasion resistance, chemical resistance, and light resistance possible effects can be obtained.

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 attaching step 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 attaching step 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 and 8 are views 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;
9 is a view schematically showing a manufacturing method of forming a coating layer in the manufacturing method of plastic glazing according to an embodiment of the present invention;
10 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;
11 is a view schematically showing a method of manufacturing by continuously supplying a coating film in the manufacturing method of plastic glazing according to an embodiment of the present invention;
12 is a view schematically showing a method for manufacturing a molded article using a plastic glazing according to an embodiment of the present invention;
13 is a flowchart schematically showing a method for manufacturing a plastic glazing according to an embodiment of the present invention;
14 is a flowchart schematically showing a method for manufacturing a coating film in a method for manufacturing a plastic glazing according to an embodiment of the present invention;
15 is a flowchart schematically illustrating a method for manufacturing a molded article using plastic glazing according to an embodiment of the present invention.

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

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and should be construed to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present invention, terms such as first, second, etc. may be used to describe various components, but the components may not be limited by the terms. The above terms are only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

The term “and/or” may include a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but other components may exist in between. can be understood On the other hand, when an element is referred to as being “directly connected” or “directly connected” to another element, it may be understood that the other element does not exist in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression may include the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and one or more other features It may be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary may be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, it is interpreted in an ideal or excessively formal meaning. it may not be

In addition, the following embodiments are provided to more completely explain to those with average knowledge in the art, and the shapes and sizes of elements in the drawings may be exaggerated for more clear explanation.

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 attaching step in the manufacturing method of the plastic glazing. And, Figure 7 is a view schematically showing an apparatus used in the adhesive supply step in the manufacturing method of the plastic glazing, FIGS. 9 and 10 are a manufacturing method of forming a coating layer and a pattern layer in the manufacturing method of the plastic glazing is a view schematically showing, and FIG. 11 is a view schematically showing a method of manufacturing by continuously supplying a coating film in the manufacturing method of the plastic glazing. 12 is a view schematically showing a method for manufacturing a molded article using the plastic glazing.

And, FIG. 13 is a flowchart schematically showing a method of manufacturing the plastic glazing, FIG. 14 is a flowchart schematically illustrating a method of manufacturing a coating film in the manufacturing method of the plastic glazing, and FIG. 15 is a molded article manufacturing using the plastic glazing It is a flowchart schematically showing the method.

1 to 15, in the method for manufacturing a plastic glazing according to an embodiment of the present invention, a base layer supplying a base layer 110 made of a polycarbonate (hereinafter referred to as 'PC') resin A step (S110), an adhesive supply step (S120) of applying the adhesive 130a to the base layer 110 in the width direction of the base layer 110, and the adhesive applied to the base layer 110 A coating film supply step (S130) of seating the coating film 120 on the upper side of (130a), and an attachment step of attaching the coating film 120 to the base layer 110 by pressing the supplied coating film 120 (S140, S150) includes

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 coating film 120 in order to adhere the coating film 120 to the base layer 110 .

For example, in the adhesive supply step (S120), air is injected at a predetermined pressure into the storage tank 212 in which the adhesive 130a is stored, and a predetermined amount of the adhesive 130a is supplied to the base layer 110 through the discharge device 213. can be applied to the surface of

The storage tank 212 is connected to the air supply device 211 and the air supply line 212a, and is stored in the storage tank 212 by the pressure of the air supplied from the air supply device 211. The adhesive is supplied to the discharging device 213 . Here, the pressure and time conditions of the air supplied to the storage tank 212 may vary according to the size of the base layer 110 and the thickness of the adhesive layer 130 .

In addition, the storage tank 212 may be provided with a pressure sensor 212b for measuring the pressure inside the storage tank 212 . Through this, the air supply device 211 can be controlled so that the pressure inside the storage tank 212 maintains a constant value.

In addition, the storage tank 212 may be provided with a static pressure safety device (212c). For example, the static pressure safety device 212c may be provided as a valve that automatically exhausts the air inside the storage tank 212 to the outside when the pressure inside the storage tank 212 is equal to or greater than the limit pressure. Through this, it is possible to prevent the storage tank 212 and the discharging device 213 from being damaged or from excessively discharging the adhesive 130a when the pressure inside the storage tank 212 is equal to or greater than the limit pressure. Here, the limiting pressure can be set by the user according to the conditions of use.

The discharge device 213 is disposed in the width direction of the base layer 110 and is configured to apply the adhesive supplied from the storage tank 212 in the width direction of the base layer 110 .

For example, the discharge device 213 is formed as a hollow tube to accommodate the adhesive therein, is disposed in the width direction of the base layer, and a plurality of discharge holes 213a are formed at regular intervals in the longitudinal direction. A uniform amount of adhesive may be applied in the width direction of the base layer 110 .

In addition, the adhesive supply pipe 214 connecting the storage tank 212 and the discharging device 213 is preferably made of a material having excellent chemical resistance so as not to cause chemical spots and chemicals contained in the adhesive. In addition, since the adhesive may be cured by light generated from a fluorescent lamp or a UV curing machine, the adhesive supply pipe 214 is preferably made of a material that does not transmit light. Of course, when the adhesive supply pipe 214 is made of a transparent material, it may be formed so as to surround the adhesive supply pipe 214 with a material that does not transmit light.

And, the manufacturing method of the plastic glazing according to an embodiment of the present invention may further include an adhesive planarization step.

The adhesive planarization step may be performed between the adhesive supply step (S120) and the coating film supply step (S130).

That is, in the adhesive planarization step, the adhesive 130a is flattened using a roller 225 or a squeegee (not shown) before the coating film 120 is seated on the upper side of the adhesive 130a applied to the base layer 110 . This is a flattening step.

Here, the flattening roller 225 may be formed of a foamed sponge roller and a squeegee to flatten the adhesive applied at close intervals.

Furthermore, the method of manufacturing a plastic glazing according to an embodiment of the present invention may further include an adhesive recovery step.

The adhesive recovery step may be made between the adhesive supply step (S120) and the coating film supply step (S130), or may be made together with the coating film supply step (S130).

That is, the adhesive recovery step is a step in which the coating film 120 is seated on the upper side of the adhesive 130a applied to the base layer 110 , the adhesive that is supplied excessively and flows down to both sides of the base layer 110 . is the step to recover. The recovered adhesive can be recycled.

For example, a support roller 224 to support the lower surface of the base layer 110, an adhesive removal pad 215 for scraping the adhesive from the support roller 224, and the adhesive removal pad 215 An adhesive recovery tray 216 for collecting the adhesive collected through may be provided.

With this configuration, in the adhesive recovery step, when the coating film 120 is seated after the adhesive 130a is applied to the base layer 110, some adhesive flows down to both sides of the base layer 110, The flowing adhesive is attached to the support roller 224 . In addition, the adhesive attached to the support roller 224 may be stored in the adhesive recovery tray 216 after being separated from the support roller 224 by the adhesive removal pad 215 to be recovered.

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

Here, the attaching step (S140, S150) includes a pressing step (S140) in which a plurality of rollers (221, 222, 223) press the coating film 120, and UV irradiation to the coating film 120 to It includes a curing step (S150) of curing the adhesive (130a).

For example, the 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 pressing with a second roller 222 It may include a second moving step of adjusting the thickness by moving the adhesive moved in the first direction in the second direction, and a planarization 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 0 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 flatly spread the adhesive while pressing the coating film 120 with a certain 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 curing step (S150), the adhesive is cured through a curing device 240 that irradiates UV to the coating film 120 in a state in which the adhesive is applied between the base layer 110 and the coating film 120 . to form an adhesive layer.

At this time, the curing step (S150) may be made to cure the adhesive by irradiating ultraviolet rays with a wavelength of 200 to 300 nm with a light amount 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 and the coating film 120 and process environmental conditions.

Furthermore, the attaching step (S140, S150) may further include a preheating step of preheating the coating film 120 before the curing step (S150) after the pressing step (S140). In the preheating step, the surface temperature of the coating film 120 may be preheated to 70 to 80° C. through the heating device 230 . Through this, the adhesive can be cured more rapidly in the curing step (S150). 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 preheating step so that the adhesive 130a is quickly cured in the subsequent curing step (S150). Of course, the adhesive 130a may be provided in a solvent-free type.

The coating film supply step (S130) is a step of supplying a coating film 120 to at least one surface of the base layer 110, as shown in FIG. The coating film 120 is supplied to one surface of the substrate layer 110 through the supply rollers 321 and 322, or the coating film 120 is applied to both sides of the substrate layer 110 as shown in FIG. Alternatively, as shown in FIG. 11 , the coating film 120 may be continuously supplied while manufacturing the coating film 120 .

More specifically, the coating film supply step (S130) is a base layer supply step ( S131), and coating an organic-inorganic hybrid compound on one surface of the base layer 121 to form a coating layer 122 may include a coating layer forming step (S132). Of course, in the base layer supply step (S131), various optical films may be supplied in addition to the above films.

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 by laminating at least two or more of a PC film, a PMMA film, a PC/PMMA film, and a PET film.

For example, one PC film or a PMMA film may be formed, a plurality of PC films or a plurality of PMMA films may be laminated, or a PC film and a PMMA film may be laminated.

In the coating layer forming step (S132), as shown in FIG. 9 , the presence or absence on one surface of the base layer 121 continuously supplied through the base layer supply roller 310 using a gravure printing apparatus 331 After the coating solution, which is a pre-hybrid compound, is applied, the coating solution is cured while passing through the curing device 350 to prepare the coating layer 122 . Then, the film on which the coating layer 122 is formed on the base layer 121 is wound around the coating film supply roller 321 .

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.

In addition, the coating film supply step (S130) may further include a pattern layer forming step (S133) 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 (a) of FIG. 10 . 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), a pattern may be formed using a silk screen printing apparatus or a digital dot printing (DDP) apparatus 340 as shown in FIG. 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, the coating film supply step (S130) is supplied to the substrate layer 110 as shown in FIG. 2 after forming the pattern layer 123 and then wound on the coating film supply roller 322, or separately As shown in FIG. 11 without being wound on the coating film supply roller, the coating layer 122 is formed on one surface of the base layer 110 that is continuously supplied, and then cured, and a pattern layer ( After curing 123), the coating 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 coating film supply step (S130), the coating 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 coating layer 122 is stacked to be disposed on the outermost side.

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

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 four types, for example.

More specifically, as shown in (a) of FIG. 1, a coating film consisting of a base layer 121 on which a PC film and a PMMA film are laminated and a coating layer 122 laminated on the base layer 121 is applied to an adhesive layer ( The plastic glazing 100 may be manufactured by laminating it on the base layer 110 through 130). At this time, the base layer 121 of the coating film is attached to the adhesive layer 130 and the coating layer 122 is laminated to be disposed outside. Although not shown in the drawings, the coating film may be laminated on both sides of the base layer 110 .

And, as shown in (b) of FIG. 1, the base layer 121 in which the PC film and the PMMA film are laminated, the coating layer 122 on one surface of the base layer 121, and the pattern layer 123 on the other surface. The plastic glazing 100 may be manufactured by laminating the laminated coating film on the base layer 110 through the adhesive layer 130 . At this time, the pattern layer 123 of the coating film 120 is attached to the adhesive layer 130 and the coating layer 122 is laminated to be disposed outside. At this time, as shown in (d) of FIG. 1 , the coating film 120 may be laminated on both surfaces of the base layer 110 .

In addition, as shown in (c) of FIG. 1 , a coating film having a pattern layer 123 formed thereon is laminated on one surface of the base layer 110 through an adhesive layer 130 , and the other surface of the base layer 110 . The plastic glazing 100 may be manufactured by laminating a coating film on which a pattern layer is not formed through the adhesive layer 130 .

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 120 so that the plastic glazing sheet (S) can be easily deformed without cracking. It is a step of preheating to satisfy ~250℃. To this end, the plastic glazing sheet (S) may be heated after the heating heater is set to 320 to 350°C.

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 65 seconds in a heated state to satisfy the temperature of 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.

Although the present invention has been described in detail through specific examples, it is intended to describe the present invention in detail, and the present invention is not limited thereto. It is clear that the transformation or improvement is possible by the person.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

100: plastic glazing 110: base layer
120: coating film 121: base layer
122: coating layer 123: pattern layer
211: air supply device 212: storage tank
213: discharge device 214: adhesive supply pipe
215: adhesive removal pad 216: adhesive recovery tray
221: first roller 222: second roller
223: third roller 224: support roller
230: heating device 240: curing device
310: base layer supply roller 321, 322: coating film supply roller
410: heating device 420: mold
431: upper mold 432: lower mold

Claims (19)

A base layer supply step of supplying a base layer made of PC (polycarbonate) resin;
an adhesive supply step of applying an adhesive to the base layer in the width direction of the base layer; and
A coating film supply step of seating the coating film on the upper side of the adhesive applied to the base layer; and
Including; attaching step of attaching to the base layer by pressing the supplied coating film,
The coating film supply step,
a base layer supplying step of supplying a base layer made of a PC film, a polymethyl methacrylate (PMMA) film, a PC/PMMA film, or a polyethylene terephthalate (PET) film; and
A coating layer forming step of forming a coating layer by coating an organic-inorganic hybrid compound on one surface of the base layer;
The coating layer forming step,
Coating an organic-inorganic hybrid compound produced by chemically bonding silica (Si) to an epoxy resin,
The attaching step is
A pressing step of pressing the coating film by a plurality of rollers; and
A curing step of curing the adhesive by irradiating UV to the coating film;
The pressing step is
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.
According to claim 1,
The adhesive supply step is,
A method of manufacturing a plastic glazing, comprising supplying a certain amount of adhesive to a discharge device for applying the adhesive to the surface of the base layer by injecting air at a certain pressure into a storage tank in which the adhesive is stored.
3. The method of claim 2,
The adhesive supply step is,
The discharge device is disposed in the width direction of the base layer, and a plurality of discharge holes are formed at regular intervals in the discharge device to apply a uniform amount of adhesive in the width direction of the base layer. manufacturing method.
According to claim 1,
Adhesive planarization step of planarizing the adhesive applied to the base layer using a flattening roller or a squeegee;
Method of manufacturing plastic glazing, characterized in that it further comprises.
According to claim 1,
an adhesive recovery step of recovering the adhesive flowing down from the base layer;
Method of manufacturing plastic glazing, characterized in that it further comprises.
delete delete According to claim 1,
The attaching step is
A preheating step of preheating the coating film before the curing step after the pressing step;
Method of manufacturing plastic glazing, characterized in that it further comprises.
delete According to claim 1,
The base layer supply step,
A method for producing a plastic glazing, characterized in that the base layer is formed by laminating at least two or more of a PC film, a PMMA film, a PC/PMMA film, and a PET film.
delete According to claim 1,
The coating film supply step,
A method of manufacturing a plastic glazing, characterized in that supplying the coating film so that the base layer faces the base layer.
According to claim 1,
The coating film supply step,
a pattern layer forming step of forming a specific pattern layer on the other surface of the base layer;
Method of manufacturing plastic glazing, characterized in that it further comprises.
14. The method of claim 13,
The pattern layer forming step,
A method of manufacturing plastic glazing, characterized in that the pattern layer is formed by any one of silk screen printing, gravure printing, and digital dot printing (DDP).
14. The method of claim 13,
The coating film supply step,
A method of manufacturing a plastic glazing, characterized in that the coating film is supplied so that the pattern layer faces the base layer.
A sheet cutting step of cutting the plastic glazing produced according to any one of claims 1 to 5, 8, 10, 12 to 15 to a specific size;
A sheet preheating step of preheating the cut plastic glazing sheet; and
A molding step of molding the preheated plastic glazing sheet by pressing it in a mold;
A method of manufacturing a molded article using plastic glazing comprising a.
17. The method of claim 16,
The sheet preheating step is
A method for manufacturing a molded article using plastic glazing, characterized in that preheating is performed so that the surface temperature of the plastic glazing sheet satisfies 120 to 250°C.
17. The method of claim 16,
The forming step is
A method for manufacturing a molded article using plastic glazing, characterized in that the mold is heated to satisfy the temperature of 60-100° C. and the plastic glazing sheet is pressed for 45 to 65 seconds.
17. The method of claim 16,
a pattern forming step of vacuum adsorbing the molded plastic glazing sheet to a lower mold and then pressing the upper mold to form a specific pattern;
Molded article manufacturing method using plastic glazing, characterized in that it further comprises.

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