Method for manufacturing laminated glass and laminated glass

Abstract

The present invention belongs to the field of glass technology, and more specifically, relates to a method for manufacturing laminated glass and laminated glass. The method for manufacturing laminated glass comprises the following steps: after a first glass substrate, a film and a second glass substrate are pressed, the initial pressed glass obtained by pressing is bent to obtain a finished laminated glass in an arc shape. When the finished laminated glass is installed on a building curtain wall, the convex arc surface of the laminated glass faces outside the building. In this way, the laminated glass in an arc shape is equivalent to a convex mirror convexly arranged outside the building. When an object outside the building is reflected on the laminated glass of the outer wall of the building curtain wall, the convex surface of the laminated glass can effectively stretch the reflected image outside the building, thereby changing the shape of the reflected object, so that the reflection will not be deformed such as twisted or corrugated due to the local deformation of the laminated glass, thereby making the appearance of the building curtain wall more beautiful and meeting greater market demand.

Description

Technical Field

[0001] The present invention belongs to the technical field of glass, and more specifically, relates to a method for manufacturing laminated glass and the laminated glass. Background Art

[0002] With the continuous advancement of glass production technology, for curtain wall glass, the function of architectural glass is no longer just to meet the lighting requirements, but curtain wall glass is also required to have the characteristics of adjusting light, thermal insulation, safety and artistic decoration, among which safety and artistic decoration are divided into appearance color, appearance image quality, etc.

[0003] In the prior art, tempered glass products are produced only under the premise of meeting the national standard requirements for glass bow and wave shape and ensuring that the tempered glass is not damaged or less damaged during processing. However, the general tempered glass production process requires tempering in a high-temperature tempering furnace. Since the tempered glass absorbs heat in the tempering furnace through conduction, radiation, convection, etc., the edge of the tempered glass first absorbs heat and conducts the heat to the middle of the glass, so that the edge of the glass absorbs heat fastest, causing the short side of the glass to partially curl and deform, resulting in deformation of the glass image; in addition, before making laminated glass, the tempered glass needs to be placed on a laminated trolley for initial pressing treatment, and two adjacent tempered glasses are separated by a block of high-temperature resistant Teflon. Since the Teflon is in point contact with the tempered glass, the glass is locally squeezed and deformed at the contact position, resulting in deformation of the glass image. That is to say, in the process of producing tempered glass and using tempered glass to make laminated glass, due to the upward or downward bending of the edges of the tempered glass, and the specific extrusion deformation due to the point force during pressing, the laminated glass will appear uneven as a whole, with partial depressions or partial protrusions. This will cause the final laminated glass to have serious image deformation after being installed on the exterior wall of the building. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a method for manufacturing laminated glass and laminated glass, so as to solve the technical problem in the prior art that the laminated glass is prone to overall unevenness such as partial depression or partial protrusion, resulting in severe image deformation after the laminated glass is installed on the exterior wall of a building.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a method for manufacturing laminated glass, comprising the following steps:

[0006] S10, providing a first glass substrate, a second glass substrate and a plurality of films;

[0007] S20, cleaning the first glass substrate and the second glass substrate, and drying them;

[0008] S30, stacking a plurality of films in sequence and sandwiching them between a first glass substrate and a second glass substrate to obtain a laminated glass;

[0009] S40, performing initial pressing treatment on the laminated glass to obtain initial pressed glass;

[0010] S50, performing bending processing on the initial pressed glass, so that the first glass substrate, the second glass substrate and the film are in an arc shape, and a bent glass is obtained;

[0011] S60, performing high temperature and high pressure forming and pressing processing on the curved glass to obtain a finished laminated glass in an arc shape.

[0012] In some embodiments, in step S50 , the long sides of the first glass substrate and the long sides of the second glass substrate are bent by 1.5 mm per 1000 mm.

[0013] In some embodiments, in step S50 and step S60 , the short side of the first glass substrate is bent by 0-1 mm relative to the horizontal plane where the first glass substrate is located.

[0014] In some embodiments, in step S50 and step S60, the short side of the second glass substrate is bent by 0-1 mm relative to the horizontal plane where the second glass substrate is located.

[0015] In some embodiments, in step S40, a plurality of laminated glasses are stacked and placed on an initial pressing trolley for initial pressing, and a strip gasket is sandwiched between the two long sides of two adjacent laminated glasses. In step S50, the two adjacent laminated glasses are bent by their own weight under the isolation of the strip gasket, thereby obtaining arc-shaped initial pressed glass.

[0016] In some embodiments, the length of the strip spacer is 0.35 to 0.45 times the length of the laminated glass.

[0017] In some embodiments, the strip padding is an elastic padding.

[0018] In some embodiments, it is characterized in that: the curved glass obtained by step S50 has a spacing distance between the first glass substrate, the film and the second glass substrate that does not exceed 2 mm.

[0019] In some embodiments, the first glass substrate and the second glass substrate are both tempered glass.

[0020] The above one or more technical solutions in the method for manufacturing laminated glass provided by the present invention have at least one of the following technical effects: after the first glass substrate, the film and the second glass substrate are pressed, the initial pressed glass obtained by pressing is bent to obtain curved glass in an arc shape, and the curved glass is pressed under high temperature and high pressure after the bending process, so as to obtain a finished laminated glass in an arc shape. When the finished laminated glass is installed on the building curtain wall, the convex arc surface of the finished laminated glass in an arc shape faces the outside of the building. In this way, the laminated glass in an arc shape is equivalent to a convex mirror convexly arranged toward the outside of the building. When objects outside the building are reflected on the laminated glass of the outer wall of the building curtain wall, the convex surface of the laminated glass can effectively stretch the reflected image outside, thereby changing the shape of the reflected object, so that the reflection will not be deformed such as twisted or corrugated due to the local deformation of the laminated glass, thereby making the appearance of the building curtain wall more beautiful and meeting greater market demand.

[0021] Another technical solution of the present invention is: a laminated glass, which is manufactured and formed by adopting the manufacturing method of the laminated glass.

[0022] The laminated glass of the present invention is obtained by bending the initial pressed glass after sheeting, so as to obtain an arc-shaped finished laminated glass. When used and installed, the convex arc surface of the arc-shaped finished laminated glass faces the outside of the building. The arc-shaped laminated glass is equivalent to a convex mirror convexly arranged toward the outside of the building. In this way, when objects outside the building are reflected on the laminated glass of the exterior wall of the building curtain wall, the convex surface of the laminated glass can effectively stretch the reflected image outside, thereby changing the shape of the reflected object, so that the reflection will not be deformed such as twisted or corrugated due to local deformation of the laminated glass, thereby making the appearance of the building curtain wall more beautiful and meeting greater market demands. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 A schematic diagram of a process for manufacturing a laminated glass provided by an embodiment of the present invention;

[0025] Figure 2 For use Figure 1 The cross-sectional view of the laminated glass manufactured by the manufacturing method of the laminated glass is shown along the width direction.

[0026] Among them, the reference numerals in the figure are:

[0027] 10 - first glass substrate; 20 - second glass substrate; 30 - film. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figure 1 and 2 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] References to "one embodiment", "some embodiments" or "an embodiment" described in the present specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present invention. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc., appearing at different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. In addition, in one or more embodiments, particular features, structures or characteristics may be combined in any suitable manner.

[0033] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a method for manufacturing laminated glass, which is particularly suitable for producing ultra-large size glass with a length and width of 2000mm×1000mm or more. Specifically, the method for manufacturing laminated glass includes the following steps:

[0034] S10, providing a first glass substrate 10, a second glass substrate 20 and a plurality of films 30; wherein the number of films 30 can be one or more. When multiple films 30 are provided, the multiple films 30 are stacked and bonded in sequence to form a whole and then clamped between the opposite glass substrate and the second glass substrate 20.

[0035] S20, cleaning the first glass substrate 10 and the second glass substrate 20, cleaning the impurities and dirt on the surfaces of the first glass substrate 10 and the second glass substrate 20, specifically, they can be cleaned by a dedicated cleaning machine, or by spray cleaning with a high-pressure water gun, etc.; after the cleaning is completed, the moisture on the surfaces of the first glass substrate 10 and the second glass substrate 20 is wiped dry, and they are dried to obtain the dry and clean first glass substrate 10 and the second glass substrate 20.

[0036] S30, stacking a plurality of films 30 in sequence and sandwiching them between the first glass substrate 10 and the second glass substrate 20 to obtain a laminated glass, that is, laminating the first glass substrate 10, the film 30 and the second glass substrate 20. When laminating, the film 30 is naturally laid flat between the first glass substrate 10 and the second glass substrate 20, and an adhesive is filled between the film 30 and the first glass substrate 10, the film 30 and the film 30, and the film 30 and the second glass substrate 20 to bond the first glass substrate 10, the film 30 and the second glass substrate 20 together; at the same time, the edges of the first glass substrate 10 and the second glass substrate 20 are aligned during the initial pressing to prevent the first glass substrate 10 and the second glass substrate 20 from being staggered. Specifically, this step is completed in a special laminating room to ensure that the laminating process will not cause secondary pollution to the first glass substrate 10 and the second glass substrate 20, and will not cause external debris to adhere to the film 30.

[0037] S40, performing initial pressing on the laminated glass to obtain initial pressed glass. Specifically, in this embodiment, the laminated glass is initially pressed by flat pressing, and a roller press and a flat press can be used to perform the initial pressing on the laminated glass. After the initial pressing, the first glass substrate 10, the film 30 and the second glass substrate 20 are pressed into a whole.

[0038] S50, bending the initially pressed glass to make the first glass substrate 10, the second glass substrate 20 and the film 30 in an arc shape, thereby obtaining an arc-shaped curved glass; specifically, in this embodiment, the curved glass in an arc shape means that the cross section of the initially pressed glass along the length or width direction is in an arc shape, or the cross section of the initially pressed glass along the length and width directions are both in an arc shape.

[0039] S60, performing high temperature and high pressure forming and pressing treatment on the curved glass to obtain a finished laminated glass in an arc shape. Specifically, in this embodiment, a high temperature and high pressure equipment is used to perform high temperature and high pressure forming and pressing treatment on the curved glass. During the treatment, the adhesive between the first glass substrate 10, the film 30 and the second glass substrate 20 is completely melted, so that the first glass substrate 10, the film 30 and the second glass substrate 20 are firmly bonded together, ensuring the stacking firmness of the finished laminated glass.

[0040] The method for manufacturing laminated glass provided by the embodiment of the present invention is as follows: after the first glass substrate 10, the film 30 and the second glass substrate 20 are pressed, the initial pressed glass obtained by pressing is bent to obtain curved glass, and the curved glass is pressed under high temperature and high pressure after the bending, so as to obtain a finished laminated glass in the shape of an arc. When the finished laminated glass is installed on the building curtain wall, the convex arc surface of the finished laminated glass in the shape of an arc faces the outside of the building. In this way, the laminated glass in the shape of an arc is equivalent to a convex mirror convexly arranged toward the outside of the building. When objects outside the building are reflected on the laminated glass of the outer wall of the building curtain wall, the convex surface of the laminated glass can effectively stretch the reflected image outside, thereby changing the shape of the reflected object, so that the reflection will not be deformed such as twisted or corrugated due to the local deformation of the laminated glass, thereby making the appearance of the building curtain wall more beautiful and meeting greater market demand.

[0041] In another embodiment of the present invention, Figure 1 and Figure 2 As shown, in the above step S50, the long sides of the first glass substrate 10 and the long sides of the second glass substrate 20 are bent by 1.5 mm per 1000 mm, that is, the long sides of the first glass substrate 10 and the second glass substrate 20 are controlled to be bent by 0.15%. In this way, the curvature of the first glass substrate 10 and the second glass substrate 20 is small, and the curvature of the laminated glass after molding is small. When it is installed on the building curtain wall, the laminated glass will not be visually noticeable in an arc shape, and the surface of the building curtain wall is visually ensured to be flat. Figure 2 As shown, in this embodiment, the long side is bent by 1.5 mm every 1000 mm, which means that for the first glass substrate 10 (second glass substrate) with a length of 1000 mm, the spacing distance between the edge of its long side and the horizontal plane A where the first glass substrate 10 (second glass substrate 20) is located is 1.5 mm.

[0042] In another embodiment of the present invention, Figure 1 and Figure 2 As shown, in the above-mentioned steps S50 and S60, the short side of the first glass substrate 10 is bent by 0-1 mm relative to the horizontal plane where the first glass substrate 10 is located, that is, Figure 2 As shown, two opposite short sides of the first glass substrate 10 are bent relative to the horizontal plane A where the first glass substrate 10 is located, and the maximum bending value L of the edge of the short side relative to the horizontal plane is 1 mm.

[0043] Furthermore, in this embodiment, if Figure 1 and Figure 2 As shown, in the above-mentioned steps S50 and S60, the short side of the second glass substrate 20 is bent by 0-1 mm relative to the horizontal plane where the second glass substrate 20 is located. Figure 2 As shown, two opposite short sides of the first glass substrate 10 are bent relative to the horizontal plane A where the first glass substrate 10 is located, and the maximum bending value L of the edge of the short side relative to the horizontal plane is 1 mm.

[0044] In another embodiment of the present invention, Figure 1 As shown, in step S40, a plurality of laminated glasses are stacked and placed on a primary pressing trolley for primary pressing, and a strip gasket is sandwiched between the two long sides of two adjacent laminated glasses, the strip gasket is used to separate the two adjacent primary pressing glasses and form a gap between the two adjacent primary pressing glasses, so that in step S50, the two adjacent laminated glasses can bend by their own weight under the isolation of the strip gasket, thereby obtaining curved glass in an arc shape. Of course, in some other embodiments, a primary pressing tool such as a roller press can also be used to provide downward pressure to the laminated glass when performing the primary pressing on the laminated glass, so that the laminated glass is in a curved state after the primary pressing, so that it can bend and deform under the action of its own weight later.

[0045] In another embodiment of the present invention, the length of the strip gasket is 0.35 to 0.45 times the length of the laminated glass, and the strip gasket is arranged at the middle of the laminated glass. In this way, a strip gasket of appropriate length is selected to separate two adjacent laminated glasses, and the length of the contact position between the strip gasket and the laminated glass is relatively large, thereby preventing the laminated glass from bending and deforming only at the position in contact with the strip gasket, that is, avoiding local bending and deformation of the laminated glass. In some specific embodiments, the length of the strip gasket can be 0.35 times, 0.38 times, 0.40 times, 0.42 times, 0.45 times, etc., of the length of the laminated glass.

[0046] Preferably, in this embodiment, when the length of the laminated glass is less than 1800 mm, the length of the strip gasket is preferably 700 mm, and the strip gasket has certain versatility. When the length of the laminated glass exceeds 1800 mm, the length of the strip gasket needs to be increased according to the above proportional relationship.

[0047] In another embodiment of the present invention, the strip gasket is an elastic gasket, that is, the strip gasket is in elastic contact with the laminated glass, and when squeezed against each other, the strip gasket can undergo elastic deformation to avoid local stress concentration and deformation of the glass.

[0048] Preferably, in this embodiment, the strip gasket is a silicone gasket or a rubber gasket.

[0049] In another embodiment of the present invention, Figure 1 and Figure 2 As shown, in the initial pressed glass obtained by step S40, the spacing between the first glass substrate 10, the film 30 and the second glass substrate 20 does not exceed 2 mm, ensuring the internal flatness of the finished laminated glass, thereby improving the quality of the laminated glass.

[0050] In another embodiment of the present invention, the first glass substrate 10 and the second glass substrate 20 are both tempered glass, which has a certain prestress and can withstand a certain external impact. When the laminated glass made of them is installed in the building curtain wall, it can resist the influence of the external harsh environment and has a long service life.

[0051] Another embodiment of the present invention further provides a laminated glass, which is manufactured and formed by the manufacturing method of the laminated glass of the above embodiment.

[0052] The laminated glass of the present invention is obtained by bending the initial pressed glass after sheeting, so as to obtain an arc-shaped finished laminated glass. When used and installed, the convex arc surface of the arc-shaped finished laminated glass faces the outside of the building. The arc-shaped laminated glass is equivalent to a convex mirror convexly arranged toward the outside of the building. In this way, when objects outside the building are reflected on the laminated glass of the exterior wall of the building curtain wall, the convex surface of the laminated glass can effectively stretch the reflected image outside, thereby changing the shape of the reflected object, so that the reflection will not be deformed such as twisted or corrugated due to local deformation of the laminated glass, thereby making the appearance of the building curtain wall more beautiful and meeting greater market demands.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for manufacturing laminated glass, characterized in that: The following steps are involved: S10, providing a first glass substrate, a second glass substrate and a plurality of films; S20, cleaning the first glass substrate and the second glass substrate, and drying them; S30, stacking a plurality of the films in sequence and sandwiching them between the first glass substrate and the second glass substrate to obtain a laminated glass; S40, performing initial pressing treatment on the laminated glass to obtain initial pressed glass; S50, performing a bending process on the initially pressed glass, so that the first glass substrate, the second glass substrate and the film are in an arc shape, and a bent glass is obtained; S60, performing high-temperature and high-pressure forming and pressing processing on the curved glass to obtain a finished laminated glass in an arc shape; In step S50 , the long sides of the first glass substrate and the long sides of the second glass substrate are bent by 1.5 mm per 1000 mm.

2. The method for manufacturing laminated glass according to claim 1, characterized in that: In step S40, a plurality of the laminated glasses are stacked and placed on a primary pressing trolley for primary pressing, and a strip gasket is sandwiched between the two long sides of two adjacent laminated glasses. In step S50, the two adjacent laminated glasses are bent by their own weight under the isolation of the strip gasket, thereby obtaining the bent glass.

3. The method for manufacturing laminated glass according to claim 2, characterized in that: The length of the strip-shaped gasket is 0.35 to 0.45 times the length of the laminated glass.

4. The method for manufacturing laminated glass according to claim 2, characterized in that: The strip-shaped pad is an elastic pad.

5. The method for manufacturing laminated glass according to any one of claims 1 to 4, characterized in that: In the curved glass obtained through step S50, the spacing distances among the first glass substrate, the film and the second glass substrate do not exceed 2 mm.

6. The method for manufacturing laminated glass according to any one of claims 1 to 4, characterized in that: The first glass substrate and the second glass substrate are both tempered glass.

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