JPH066436U - Double glazing - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a double glazing with less distortion and less condensation. [Structure] In a multi-layer glass in which two glasses are opposed to each other through a spacer provided at an end and the spacer and the two glasses are fixed by a sealing material, the spacer is formed of a foam containing a desiccant. And a butyl-based sealing material containing a desiccant is coated on at least a surface of the outer peripheral surface which is in contact with the two glass sheets and the sealing material.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to double glazing.

[0002]

[Prior art]

 The double glazing used for windows of buildings is generally constructed by facing two glass pieces through a spacer provided at the end.

That is, for example, as shown in FIG. 3, a polyhedral plate made of metal and having a polygonal cross section is used as the spacer 8 (T spacer). This multi-sided plate has a rupture line on the surface in contact with the air layer 5 (on the left side in FIG. 3), and is expanded at this rupture line to remove moisture floating in the air layer 5 inside. After the desiccant 7 is filled, the desiccant 7 is closed at the breaking line and sandwiched between the two glasses 1a and 1b. The metal spacer 8 is, for example, an aluminum plate. A molecular sieve or the like is used as the desiccant 7.

A primary sealing material 9a, 9b is filled between the spacer 8 and the glass 1a, 1b to reduce the permeation of water vapor. As the material, an adhesive type sealing material mainly composed of polyisobutylene synthetic rubber is used. In addition, there are some which do not use the primary sealing materials 9a and 9b.

The surface of the spacer 8 that is not in contact with the air layer 5 and the glass 1 a, 1 b (that is, the outer side) is filled with a secondary sealing material 2 for fixing the glass 1 a, 1 b and the spacer 8. As a material, a sealing material such as polysulfide-based, silicone-based, or polyurethane-based is used.

In addition, instead of the metal spacer 8, there is also one using a butyl spacer using butyl rubber.

[0007]

[Problems to be solved by the device]

 By the way, when a metal spacer is used, the glass may come into contact with the spacer. At that time, there is a problem that the heat insulating property is deteriorated and dew condensation is likely to occur. In a low-temperature or high-pressure environment, the air layer sealed between two glasses contracts, causing a dent in the central part of the glass and distorting the image seen through the glass.

Further, when a butyl spacer is used, there is a problem that flexibility is lost at low temperature and adhesiveness is reduced. In addition, there is a problem that when shock is applied at a low temperature, the shock of the glass is not absorbed and is easily peeled off.

An object of the present invention is to solve these problems and to provide a double glazing having less distortion and less dew condensation.

[0010]

[Means for Solving the Problems]

 According to the present invention to achieve the above object, in a multi-layer glass in which two glasses are opposed to each other through a spacer provided at an end, and the spacer and the two glasses are fixed by a sealing material, The spacer is formed of a desiccant-containing foam, and at least one of the outer peripheral surfaces of the outer surface which is in contact with the glass and the sealing material is coated with a desiccant-containing butyl-based sealing material. There is provided a double glazing unit.

The present invention will be described in more detail below with reference to the preferred embodiments shown in the drawings. FIG. 1 is a partial cross-sectional view of double glazing showing an embodiment of the present invention. The materials of the glasses 1a and 1b used in the present invention are not particularly limited. Further, the same glass is generally used as the glass 1a and 1b, but different materials can be used in combination. There is no limitation on the size and thickness of the glass.

A foam 3 containing a desiccant is provided as a spacer 6 between the two glasses 1a and 1b. The outer peripheral surface (four sides) of the foam 3 is further coated with a butyl-based sealing material 4 containing a desiccant.

As the foamed material 3 constituting the spacer 6, various rubber or plastic foamed materials such as silicone-based or neoprene-based foamed materials can be used, and any flexible sponge-like material may be used. . The cross-sectional shape is not limited to the square shape and the rectangular shape as typical examples. The foam 3 contains a desiccant such as powdered molecular sieves. The particle size and content of the desiccant are not limited, but may be, for example, about 5 to 25% by weight. As a mixing method, for example, a desiccant may be kneaded into the foam material by an appropriate method to foam. The thickness of the foam is not limited, but is often about 6 to 12 mm, and 18 mm is also available.

As the butyl-based sealing material 4, for example, an adhesive-type sealing material mainly composed of butyl-based rubber can be cited. A similar desiccant is included. The viscosity and content of the desiccant are not limited, but may be, for example, about 5 to 25% by weight, and may be kneaded into the butyl-based sealing material by an appropriate method. The thickness of this sealing material is not limited, but may be about 1 to 2 mm. As shown in FIG. 2, the butyl-based sealing material 4 may be coated on three surfaces of the foam 3 except for the surface in contact with the air layer 5.

As the secondary sealing material 2, a conventionally used sealing material such as polysulfide-based, silicone-based, or polyurethane-based can be used. In the double-layer glass of the present invention, the two glasses 1a and 1b are opposed to each other with the spacer 6 having flexibility as described above, and the surface side of the spacer 6 which is not in contact with the air layer 5 and the glasses 1a and 1b The secondary sealing material 4 is filled (that is, the outside), and the glass 1a, 1b and the spacer 6 are fixed by this.

[0016]

[Action]

 When a movement occurs in the butyl-based sealing material 4 due to contraction and expansion of the sealed air layer 5, since the spacer 6 is made of foam, the spacer 6 follows the movement, so that the glass 1a, Distortion is less likely to occur in 1b.

Since the foam 3 is covered with the butyl-based sealing material 4, the permeation of water vapor into the foam is reduced. Further, the water vapor floating in the air layer 5 can be removed by the desiccant incorporated in the foam 3 and the butyl-based sealing material 4.

[0018]

[Effect of device]

 Since the present invention is configured as described above, even if a movement occurs in the butyl-based sealing material due to the contraction and expansion of the air layer, the spacer is made of foam, so that the movement follows this movement. Is less likely to be distorted.

Further, since the spacer is coated with a butyl-based sealing material, the permeation of water vapor can be reduced and dew condensation can be prevented. Also, since the desiccant is kneaded into the foam and the butyl-based sealing material, it is possible to remove the water vapor floating in the air layer and prevent dew condensation.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing an embodiment of the double glazing of the present invention.

FIG. 2 is a partial cross-sectional view showing another embodiment of the double glazing of the present invention.

FIG. 3 is a partial cross-sectional view showing an example of a conventional double glazing.

[Explanation of symbols]

 1a, 1b Glass 2 Secondary sealing material 3 Foam containing desiccant 4 Butyl-based sealing material containing desiccant 5 Air layer 6 Spacer 7 Desiccant 8 Metal spacer 9a, 9b Primary sealing material

Claims (1)

[Scope of utility model registration request] 1. A multi-layer glass in which two glasses are opposed to each other through a spacer provided at an end, and the spacer and the two glasses are fixed with a sealing material, wherein the spacer is a foam containing a desiccant. And a butyl-based sealing material containing a desiccant is coated on at least a surface of the outer peripheral surface which is in contact with the two glass sheets and the sealing material.