The present application is a National Phase entry pursuant to 35 U.S.C. § 371 of International Application No. PCT/KR2019/000247 filed on Jan. 8, 2019, and claims priority to and the benefit of Korean Patent Application No. 10-2018-0003484 filed in the Korean Intellectual Property Office on Jan. 10, 2018, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present invention relates to a method for manufacturing curved laminated glass and curved laminated glass manufactured by the same.

BACKGROUND ART

Glass is a material that has been applied to various living spaces due to the unique transparency thereof. In particular, laminated glass in which two sheets of glass are laminated is used, and curved laminated glass in the form of a bent shape forming a curved surface according to the purpose for which glass is used. Further, in order to reduce the volume and weight of curved laminated glass, curved laminated glass is manufactured by using thick plate glass and thin plate glass.

In order to manufacture curved laminated glass, self-weight molding, compression molding and cold molding methods have been generally used. The self-weight molding is a method of using a molding frame that fixes the edge of glass, increasing the temperature around the softening point of glass to be molded, molding the glass by using a phenomenon in which glass is sagging due to the self-weight of glass, and then laminating the molded glass. In addition, the compression molding is a method of molding glass to be molded in a state where glass is sufficiently heated by compressing the heated glass in a frame which is formed in a predetermined shape, and then laminating the molded glass. Furthermore, the cold molding is a method of disposing another glass on a concave surface of glass molded into a curved surface, molding another glass into a curved surface by using vacuum technology to elastically deform another glass, and then laminating the molded glass.

When thin plate glass is molded into a curved surface by using cold molding, the thin plate glass has a small thickness compared to the area, so that during a process in which the thin plate glass is elastically deformed, a buckling phenomenon occurs or wrinkles occur on the thin plate glass. In particular, the smaller the ratio of thickness to width of thin plate glass is, the more frequently the buckling phenomenon occurs or wrinkles occur on thin plate glass molded into a curved surface.

Therefore, there is a need for a technology of manufacturing curved laminated glass in which the buckling phenomenon or wrinkles is or are suppressed from occurring on thin plate glass even when the thin plate glass is subjected to cold molding.

DETAILED DESCRIPTION OF INVENTION

Technical Problem

The present specification has been made in an effort to provide a method for manufacturing curved laminated glass and curved laminated glass manufactured by the same.

However, a problem to be solved by the present invention is not limited to the aforementioned problem, and other problems that are not mentioned may be clearly understood by a person skilled in the art from the following description.

Technical Solution

An exemplary embodiment of the present invention provides a method for manufacturing curved laminated glass, the method including: providing curved thick plate glass; providing thin plate glass whose thickness is smaller than that of the curved thick plate glass; stacking a support film including a ductile layer and an elastic layer on one surface of the thin plate glass; positioning a lamination film or a bonding agent between the other surface of the thin plate glass and a concave surface of the curved thick plate glass; and laminating the thin plate glass so as to be aligned with the concave surface of the curved thick plate glass by elastically deforming the thin plate glass provided with the support film.

Further, another exemplary embodiment of the present invention provides curved laminated glass manufactured by the method for manufacturing curved laminated glass.

Advantageous Effects

A method for manufacturing curved laminated glass according to an exemplary embodiment of the present invention may effectively suppress a buckling phenomenon or wrinkles that may occur on thin plate glass having a small thickness, which is molded into a curved surface even when the thin plate glass is elastically deformed.

A method for manufacturing curved laminated glass according to an exemplary embodiment of the present invention may provide curved laminated glass which is excellent in optical quality.

According to an exemplary embodiment of the present invention, it is possible to provide curved laminated glass which has a small radius of curvature and is lightweight and thinned.

