JPH11130475A - Sealed double glazed unit and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the performance of a thermoplastic resin spacer of a worm edge type sealed double glazed unit. SOLUTION: This unit 1 is provided with a thermoplastic resin spacer 4 placed in a position in the peripheral edge region of the space between two glass plates 2 and 2' that are arranged opposite to each other and a seal layer formed by filling the outer peripheral part of the thermoplastic resin spacer 4 in the space between the two glass plates 2 and 2', with a sealant 5. In the unit 1, spacer pieces 3 are placed in the central regions of all the sides of the unit 1 and/or at all the corners of the unit 1, respectively, and fitted to the edge faces of the unit 1. Also, each of the spacer pieces 3 is provided with projecting parts 3a which are placed so as to be buried in the seal layer and held between the two glass plates 2 and 2'. Further, of the spacer pieces 3, each of those placed at the corners of the unit 1 is formed so as to be almost L-shaped, and fitted to the corner edge faces of the unit 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warm edge type double glazing and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, glass plates have been frequently used for exterior materials of buildings and the like for the purpose of lighting and design effects, but in recent years, in particular, the use of double-glazing has increased for the purpose of energy saving effects. There is a tendency.

A double-glazing unit used for an opening of a window or a top light of a building or the like is usually made of an aluminum spacer containing a desiccant and disposed between two edges of two glass plates facing each other. And the contact surface between the spacer and the glass is bonded (primary seal) with an adhesive, and the periphery thereof is hermetically sealed (secondary seal) with an elastic sealing material. The one in which the air between two glass plates is kept in a dry state is general and well known.

[0004] In the case of using these aluminum spacers, not only work such as cutting, processing, assembling the spacer and bonding to the glass are required according to the size of the glass, but also the thermal conductivity of aluminum as a material of the spacer. Because of this, the double glazing using the spacer has a problem that the heat insulation performance around the aluminum spacer in the peripheral part is slightly inferior to other parts. In recent years, in order to improve the heat insulating performance of the glass, production of a double-glazed glass using a resin spacer called a so-called warm edge double-glazed glass that does not use a metal spacer such as aluminum has been attempted in recent years.

For example, in Japanese Patent Application Laid-Open No. Hei 8-91879, a rubber spacer having a flexible, self-adhesive, desiccant dispersedly mixed therein is arranged around a plurality of glass plates. In a double glazing assembled by providing a hollow layer between glasses, a double glazing in which a nonwoven fabric or a woven fabric carrying a desiccant is attached to part or all of the surface of the spacer in contact with the hollow layer is disclosed. I have.

Japanese Unexamined Patent Publication No. Hei 8-143440 discloses a double-layer glass in which at least two glass plates are opposed to each other at a predetermined interval via a spacer on a peripheral portion thereof so that a hollow layer is formed. The spacer has a structure in which an inner layer made of a thermoplastic resin material containing a moisture absorbing material, an intermediate layer made of a film, and an outer layer made of a thermoplastic resin material are laminated in this order from the hollow layer side. Certain double glazings are disclosed.

Further, Japanese Patent Application Laid-Open No. Hei 7-223848 discloses that at least two glass plates are separated from each other so that an intermediate layer is formed with a spacer interposed therebetween, and the peripheral portion is sealed. In the double-glazed glass, the spacer includes at least a low moisture-permeable layer, a moisture-permeable resin material layer having a desiccant, and an adhesive layer for sealing a peripheral portion, and the low-permeable layer is a moisture-permeable resin material layer. A multi-layer glass that is interposed between external air outside the outer periphery of the multi-layer glass and at least a part of the moisture-permeable resin material layer communicates with an intermediate layer is disclosed.

[0008]

Problems to be Solved by the Invention Japanese Patent Application Laid-Open No. Hei 8-91879
JP-A-8-143440, JP-A-7-22384
No. 8 does not use aluminum spacers, so there is no need to assemble aluminum spacers.However, since the resin spacers do not have the rigidity of aluminum, deformation occurs before the resin spacers harden. There is a problem in that it is likely to occur, flat stacking cannot be performed during the curing period, and deformation occurs due to an increase in the number of sheets even in the case of vertical placement.

[0009]

SUMMARY OF THE INVENTION The present invention provides the above-mentioned problems,
In other words, it is possible to prevent deformation of the thermoplastic resin spacer until the adhesive is hardened, to enable the stacking of multiple pieces of double-glazed glass even during the curing period, without impairing the heat insulating performance and transparency of the double-glazed glass, In order to simplify the production process and reduce the cost, a double-layer glass in which a thermoplastic resin spacer is provided in the peripheral edge region of two opposing glass plates, and a sealing layer filled with a sealing material is further provided on the outer periphery thereof In the center area and / or corners of each side of the double-glazed glass, a spacer piece to be fitted to the end face of the double-glazed glass is provided, and a projection portion embedded and arranged in the sealing layer is provided on the spacer piece. The protruding portion is sandwiched between the two glass plates so as to maintain the interval between the two glass plates, or to provide a sealing property with each glass plate in the peripheral edge region of the two glass plates facing each other. In the double-glazed glass provided with the thermoplastic resin spacer, a spacer piece to be fitted to the end face of the double-glazed glass is provided in the central region and / or the corner of each side of the double-glazed glass, and the inside of the thermoplastic resin spacer is provided. Protrusions to be buried are provided on the spacer piece, and the protruding parts are sandwiched between two glass plates so as to maintain a space between the two glass plates, or provided at corners of the double-glazed glass. 3. A double-layered glass in which the spacer pieces are substantially L-shaped and fitted to the corner end faces of the double-layered glass, and a primary sealing material on one side of the double-sided glass according to claim 1 or 2. After placing the thermoplastic spacer on the other side, heating and softening the thermoplastic spacer, stacking the other glass plate, filling the outer periphery of the thermoplastic spacer with the sealing material as the secondary sealing material After that, before curing of the sealing material, a spacer piece having a cross section of a protruding part in the shape of a clog is inserted into each side and / or a corner of the multilayer glass, and the protruding part is pressed and sandwiched between two glass plates. 3. A method for producing a double-glazed glass wherein the sealing material is cured to bond and fix the spacer piece and the glass plate, or a primary sealing material on one edge of the double-glazed glass plate according to claim 1 or 2. After placing the thermoplastic spacer on the other side and heating and softening the thermoplastic spacer, the other glass plate is overlaid, and the spacer pieces with the protrusions at the tip of the key are placed on each side and / or corner of the multi-layer glass. In a state in which the sealing material as a secondary sealing material is filled in the outer peripheral portion of the thermoplastic resin spacer, the projection is pressed and sandwiched between two glass plates, the sealing material is cured, and the spacer pieces and the glass plate are cured. Adhesively fixed A method for producing a double-glazed glass as described above, or a thermoplastic resin spacer is arranged on a peripheral edge of a glass plate on one side of the double-glazed glass according to claims 3 and 4, and after heating and softening the thermoplastic spacer, the other glass plate Before the thermosetting resin spacer is cured, insert a spacer piece having a protruding section in the shape of a claw tooth into each side and / or corner of the double-glazed glass.
Provided is a method for manufacturing a double-glazed glass in which a protrusion is pressed and sandwiched between two glass plates, a thermosetting resin spacer is cured, and a spacer piece and a glass plate are bonded and fixed.

[0010]

DETAILED DESCRIPTION OF THE INVENTION In the present invention, a thermoplastic resin spacer 4 made of butyl rubber or the like is used instead of an aluminum spacer usually used in the peripheral edge regions of two opposing glass plates 2 and 2 '. Is a multi-layer glass 1 filled with a secondary sealing material 5 such as a polysulfide-based sealing material (polysulfide synthetic rubber), as shown in FIG. An L-shaped cross section as shown in FIG. 4 (a) is formed at the corner of the double-glazed glass 1 in which the secondary sealing material 5 is filled on the outer periphery of the thermoplastic resin spacer 4 also serving as the primary sealing material provided. Spacer pieces 3, 3, ...
The protrusion 3a is embedded in the secondary sealing material 5 and arranged.

Since the spacer pieces 3 are provided at the corners of the double-glazed glass 1, the spacer pieces 3 and the secondary sealing material 5 can be cured before curing or even if they are stacked horizontally. There is no deformation.

The thermoplastic resin spacer 4 is desirably made by mixing a desiccant or the like into butyl rubber or the like. As for the embedding arrangement position of the spacer piece 3, it is desirable that at least one spacer piece 3 is provided on one side in the corner portion and / or the center region of the glass plate.

A modified embodiment of the double glazing 1 of the present invention will be described below. FIG. 2 (a) shows a projection of a spacer piece 3 ′ having a cross section as shown in FIG. 4 (b) in the central region of each side in the secondary sealing material 5 of the double-glazed glass 1. Part 3a '
Are embedded and arranged.

FIG. 2 (b) shows a cross section as shown in FIG. 4 (b) in the central region of each side and the corner end in the secondary sealing material 5 of the double-glazed glass 1. A plurality of protrusions 3a 'of a tooth-shaped spacer piece 3' are embedded and arranged.

Alternatively, FIG. 2 (c) shows that the center of each side in the secondary sealing material 5 of the double glazing 1 is shown in FIG.
The protruding portion 3a 'of the spacer piece 3' having a cross section as shown in (b) is embedded and arranged. Further, an L-shaped as shown in FIG. And the projection 3 ′ of the spacer piece 3 whose cross section is in the shape of a clog tooth
Are embedded and arranged.

Further, an embodiment in which the present invention is applied to a single seal type double glazing 1 'will be described. FIG.
As shown in (a), two opposing glass plates 2, 2 ′
A thermoplastic resin spacer 4 'such as butyl rubber in place of the aluminum spacer normally used in the peripheral edge region of
FIG. 4 shows a multi-layered glass 1 ′ having a thermoplastic resin spacer 4 ′ also serving as a primary sealing material provided on the periphery of the glass plates 2 and 2 ′. A spacer piece 3 having a clogged tooth shape as shown in (a) is provided, and the protrusion 3a 'of the spacer piece 3' is embedded and arranged in a corner portion of the thermoplastic resin spacer 4 'of the multilayer glass 1'. It was done.

Alternatively, the cross section shown in FIG. 3B is obtained by forming a cross section as shown in FIG. 4B in the thermoplastic resin spacer 4 'at the end of the central region of each side of the multilayer glass 1'. The projection 3a 'of the shaped spacer piece 3' is embedded and arranged.

Alternatively, FIG. 3 (c) shows a cross section as shown in FIG. 4 (b) in a thermoplastic resin spacer 4 ′ at the end of the central region of each side of the multilayer glass 1 ′. The protruding portion 3a 'of the spacer piece 3' having a shape is embedded and arranged, and furthermore, an L-shaped spacer piece 3 as shown in FIG. is there.

3 (d) shows a projection of a spacer piece 3 'having a cross section in the thermoplastic resin spacer 4 in the center region of each side and a corner end of the double-glazed glass 1'. A plurality of portions 3a 'are embedded and arranged.

By providing the spacer pieces 3, 3 'at the center and / or corners of the sides of the double-glazed glass 1', the spacers 3 'can be stacked even before the thermoplastic resin spacer 4' is cured or horizontally. However, there is no deformation.

The spacer pieces 3, 3 'are made of metal such as aluminum or aluminum alloy, or made of hard resin, and have a cross section of a clog shape, and the projections 3a, 3a' of the double-glazed glass 1, 1 '. The projections 3a, 3a 'having rigidity are provided so as to be equal to the thickness of the air layer between the two glass plates 2, 2', and are sandwiched between the two glass plates 2, 2 '. Therefore, it has the function of maintaining the interval between the two glass plates 2 and 2 ′ facing each other, and can maintain the function and appearance of the thermoplastic spacer 4.

Further, unlike the conventional aluminum spacer, the spacer is not provided continuously on the entire periphery of the double-glazed glass 1, but is provided only on the main part intermittently. However, it may be made of a hard synthetic resin, and may be a metal other than aluminum such as stainless steel.

Further, when the claw-shaped parts of the spacer pieces 3, 3 'are made of resin, an aluminum foil 6 is stuck on the plate surface opposite to the projections 3a, 3a', or a metal thin film 6 '
By vapor deposition, it is possible to prevent the spacers 3 and 3 'from deteriorating, and to prevent the quality of the double glazings 1 and 1' from deteriorating.

Next, a method for manufacturing the double-glazed glass 1 will be described below. As a method for manufacturing the double-glazed glass 1 shown in FIGS. 1 and 2, a thermoplastic resin spacer 4 as a primary sealing material is arranged on the periphery of the glass plate 2 on one side of the double-glazed glass 1 and the other glass plate 2 ′ After sealing, the sealing material 5 as a secondary sealing material is filled, and before the thermoplastic resin spacer 4 and the sealing material 5 are cured, the protruding portions 3a, 3a of the spacer pieces 3, 3 'having a cross section of a clogged tooth shape are hardened. ′ Is embedded in the sealing material 5, the projections 3 a, 3 a ′ are sandwiched between the two glass plates 2, 2 ′, and the spacer pieces are bonded and fixed by curing the sealing material.

Alternatively, as shown in FIG. 3, a method for manufacturing a double-glazed glass 1 'is as follows: the protrusions 3a of the spacer pieces 3, 3' having a cross section from the outer peripheral side of the thermoplastic resin spacer 4 '. , 3a 'are embedded in a heat-softened thermoplastic resin spacer 4', the two glass plates 2, 2 'sandwich the projections 3a, 3a', and the thermoplastic resin spacer 4 'is cured by curing. Piece 3, 3 '
And the two glass plates 2 and 2 ′ are bonded and fixed to each other.

Glass plates 2, 2 ′ constituting double-glazed glass 1
If one side is made of netted glass or lined glass, it can be prevented from scattering at the time of breakage. Further, if the outdoor glass plate 2 of the multilayer glass 1 is made of heat ray reflective glass, the energy saving effect can be further enhanced. Become.

Although the preferred embodiment has been described above, the present invention is not limited to this, and various applications can be considered. As shown in FIG. 4 (c), the method of manufacturing the double glazing 1 shown in FIGS. 1 and 2 in the case where the tip of the projection 3a ″ of the spacer piece 3 ″ is not straight but bent in a key shape inward. Is a method in which a thermoplastic resin spacer 4 as a primary sealing material is attached to a glass plate 2
After heating and softening the thermoplastic spacer 4,
With the spacer piece 3 "having the other glass plate 2 'adhered thereto and the spacer piece 3" mounted at a desired position, the sealing material 5 as a secondary sealing material is also placed in the space surrounded by the projection 3a ". The protrusions 3a, 3a 'are pressed and sandwiched between the two glass plates 2, 2', and the thermoplastic resin spacer 4 and the sealing material 5 are cured to bond and fix the spacer piece 3 ". As shown in FIG.
If the tip of the projection 3a "of the spacer piece 3" as shown in Fig. 7 is bent in a key shape inside, the spacer piece 3 "will not fall off.

The spacer piece 3 ″ as shown in FIG.
Is used for a double glazing 4 ′ as shown in FIG.
By changing the shape of the protrusion of the spacer piece 3 ″ into a loosely curved shape, the protrusion can be embedded in the softened thermoplastic resin spacer 4 ′, and after the thermoplastic resin spacer 4 ′ is cured. The spacer piece 3 ″ does not fall off.

Glass plates 2, 2 ′ constituting double-glazed glass 1
May be raw glass, semi-tempered glass, tempered glass, glass with a net, glass with a wire, or a combination of the above glass plates and a laminated glass plate bonded by PVB or EVA, or a shatterproof film on the glass plate surface. Is also included.

Further, a glass plate surface coated with a heat ray reflection film, an ultraviolet reflection film, or the like by coating or vacuum deposition, or a glass tissue made of glass fiber in a tissue shape, The dry air layer between the glass plates may be one containing a special gas, one containing a lattice, or one containing a louver.

Further, when a metal tape such as stainless steel or aluminum having a width of about the thickness of the multilayer glass 1 is attached to the entire periphery of the end surfaces of the multilayer glasses 1 and 1 ', the sealing property is further improved and effective. .

[0032]

According to the present invention, a resin spacer is used in place of the aluminum spacer provided around the entire peripheral edge of the double-glazed glass plate, so that the heat insulating performance near the spacer is not impaired. Since the spacer piece is provided at the end of the multilayer glass plate, particularly at the corner which is easily broken, the edge of the glass plate is protected from mechanical shock, thereby preventing breakage.

Since the spacer pieces are partially provided at important points, deformation of the thermoplastic spacer until the adhesive is hardened can be prevented by simple means, and can be stacked and stored, and can be transported even after the resin spacer is hardened. It became easier without deformation due to loading and placing at the time.

Further, since the spacer piece has a simple shape such as a clog tooth shape, the spacer piece can be easily formed by extrusion molding or the like. If the spacer piece is inserted into the thermoplastic resin spacer at the time of softening, the insertion work is simple, and automation is possible. It is possible to realize low-cost double glazing, and the energy saving effect is high.

[Brief description of the drawings]

FIGS. 1A and 1B are a front view and a partial cross-sectional view, respectively, of an embodiment of a double glazing of the present invention.

FIGS. 2A, 2B, and 2C are front views of another embodiment of the present invention.

3 (a), (b), (c), and (d) are front views of another embodiment of the present invention, and (e) is a partial cross-sectional view thereof.

FIGS. 4A, 4B, and 4C are perspective views of spacer pieces used in the present invention.

[Explanation of symbols]

 1, 1 'double-glazed glass 2, 2' glass plate 3, 3 'spacer piece 3a, 3a' protrusion 4, 4 'thermoplastic resin spacer (primary seal) 5 sealing material (secondary seal)

Claims (7)

[Claims] 1. A double glazing comprising a thermoplastic resin spacer provided in a peripheral edge region of two opposing glass plates and a sealing layer filled with a sealing material on the outer periphery thereof. In the center area and / or corner of the side,
A spacer piece to be fitted to the end face of the double-glazed glass is provided, and a projection to be embedded and arranged in the sealing layer is provided on the spacer piece. The projection is sandwiched between two glass plates. Characterized in that the interval between them is maintained. 2. The double-layer glass according to claim 1, wherein the spacer pieces provided at the corners of the double-layer glass have a substantially L-shape, and are fitted to the corner end faces of the double-layer glass. Glass. 3. A double-glazed structure in which thermoplastic resin spacers having sealing properties with each glass plate are provided in peripheral edge regions of two opposing glass plates, and a central region of each side of the double-glazed glass and And / or a corner is provided with a spacer piece to be fitted to the end face of the double-layer glass, and a projection is provided on the spacer piece so as to be embedded in the thermoplastic resin spacer, and the projection is sandwiched between two glass plates. And a gap between the two glass plates is maintained. 4. A multi-layer glass according to claim 3, wherein the spacer piece provided at the corner of the multi-layer glass has a substantially L-shape, and is fitted to the corner end face of the multi-layer glass. The double-glazed glass as described. 5. A thermoplastic resin spacer as a primary sealing material is disposed on a peripheral edge of a glass plate on one side of the double-glazed glass according to claim 1, and after the thermoplastic spacer is heated and softened,
After laminating the other glass plate and filling the outer peripheral portion of the thermoplastic resin spacer with the sealing material as a secondary sealing material, before curing the sealing material, the cross-section of the protrusion has a clogged tooth-shaped spacer piece in the multi-layer glass. Into each side and / or corner of
A method for manufacturing a double glazing, wherein the projection is pressed and sandwiched between two glass plates, the sealing material is cured, and the spacer piece and the glass plate are bonded and fixed. 6. A thermoplastic resin spacer as a primary sealing material is disposed on a peripheral edge of a glass plate on one side of the double-glazed glass according to claim 1, and after heating and softening the thermoplastic spacer,
A sealing material as a secondary sealing material is placed on the outer periphery of the thermoplastic resin spacer in a state where the other glass plate is stacked, and a spacer piece having a protrusion at the tip of a key is placed on each side and / or a corner of the multilayer glass. A method for producing a double-glazed glass, characterized in that a spacer is filled and fixed, and the projection is pressed and sandwiched between two glass plates, and the sealing material is cured to bond and fix the spacer piece and the glass plate. 7. A thermosetting resin spacer, wherein a thermoplastic resin spacer is arranged on one side of the glass plate of the double-glazed glass according to claim 3, and the thermoplastic spacer is heated and softened. Before curing, a spacer piece having a cross section of a protruding part having a tooth shape is inserted into each side and / or a corner of the multilayer glass, and the protruding part is pressed and sandwiched between two glass plates to form a thermosetting resin spacer. A method for producing a double-glazed glass, comprising curing and fixing a spacer piece and a glass plate together.