JP2003221261A - Laminated glass plate and method of manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a glass plate capable of utilizing various glass plates such as tempered glass plate, sound proof glass plate, and heat insulating glass plate, and capable of imparting a special effect of visual sensation such as showing multiple images, or emitting multiple colors like stained glass, or cut glass. <P>SOLUTION: The laminated glass plate is composed of at least two glass plates and a flexible sheet of transparent or translucent having a lot of grooves formed at least on one side of surfaces of the sheet parallel extending in one direction, when looking at the cross section of the grooves from one side of the sheet, two sides forming an apex erecting from adjacent grooves are seen. The laminated glass plate is characterized in that between at least two glass plates the sheet is held and stuck. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to construction, lighting, etc.
The present invention relates to a laminated glass applicable to various fields and a manufacturing method thereof.

[0002]

2. Description of the Related Art Stained glass and cut glass are known, which have a rich decorative feeling and emit a variety of colors to give the viewer comfort and interest. However, such glass is
Since a plurality of glasses of different colors are used and a high degree of technology is required for the processing, it is expensive and it is not easy to provide a large glass.

On the other hand, various kinds of glass such as tempered glass, soundproof glass and heat insulating glass have come to be used more and more in high-rise buildings and buildings with large floor plans. The present inventor can effectively use such a glass having a wide range of practicality, and can give a special visual effect such as a stained glass or a cut glass that looks multiple and emits multiple colors. I wondered if glass could be made.

The present inventor has invented a laminated glass having the following new structure and a method for producing the same by repeatedly thinking about the glass having such an effect.

[0005]

The present invention comprises at least two aspects.
A sheet having a sheet of glass and innumerable grooves extending in at least one surface substantially parallel to one direction, and when viewed from one side surface of the sheet, stands up from the bottom of the adjacent grooves and is a top portion. And a transparent or semitransparent flexible sheet having a side forming a laminated glass.
The sheet is sandwiched and bonded between the at least two glasses.

Further, it is preferable that the sheet is formed of polycarbonate as a main component, and that the sheet and the glass are adhered by an adhesive made of a thermoplastic resin.

The present invention further relates to a sheet in which at least two sheets of glass and a myriad of grooves extending in at least one surface in a direction substantially parallel to each other are formed, and the sheets are adjacent to each other when viewed from one side surface of the sheet. A method for producing a laminated glass comprising: a transparent or semitransparent flexible sheet having a side that stands up from the bottom of the groove to form a top. An adhesive is supplied between the sheet and the glass to form a multi-layer glass, and the multi-layer glass is heated in a vacuumed environment to remove air between layers to soften the adhesive. It is characterized by performing adhesion between layers.

It is preferable that the obtained laminated glass is further heated and pressed. The adhesive is a film-like solid substance of a thermoplastic resin usually at room temperature, and is preferably formed of polycarbonate as a main component.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a laminated glass of the present invention in which one film sheet 2 is sandwiched between two glasses 1 of substantially the same size and the same material having a thickness of about 10 mm, a width of 2 m and a height of 6 m. 10 shows one configuration.

The laminated glass 10 has at least a five-layer structure including the glass 1, the adhesive 5, the film sheet 2, the adhesive 5, and the glass 1.

The sheet 2 sandwiched between two pieces of glass 1 is a thin and flexible transparent body and has a width of 2 m and a height so that both sides have the same size as the opposite side of each glass 1. 6
It is affixed to the size of m.

As shown in FIG. 2, the sheet 2 has grooves 3 whose one side is flat and whose other side is parallel to one direction and arranged at equal intervals. When viewed from the one side surface direction of the sheet of the arrow A, the groove 3 is formed by the bottom portion 3a and the sides 3b and 3c standing upright from the bottom portions 3a of the two adjacent grooves 3. Then, the respective sides 3b, 3c are combined to form a top portion or an apex 4, and innumerable so-called saw-like teeth are aligned. Since the light effect of the obtained laminated glass is different due to the difference in the shape of the groove 3, the two sides are more acutely or bluntly intersected to form a groove, or two or more sides are formed. Alternatively, the groove may be formed.

The surface of the film 2 and the surface of the glass 1 are adhered by a transparent or semitransparent transparent adhesive 5.

Light is refracted and reflected in each layer of the laminated glass 10. Here, it is ideal that an adhesive is filled between the groove 3 and the glass 1 so that air bubbles do not remain between the groove 3 and the glass 1 in accordance with the purpose. The bubbles may be left so as to be scattered partially or entirely.

An example of the manufacturing process of the laminated glass 10 will be described below with reference to FIG. The reference numbers used here correspond to the same reference numbers already used.

In step S1, at least two glasses 1 adjusted to a predetermined size are prepared. This glass is, for example, float plate glass and polished glass defined in JIS R 3202, template plate glass defined in JIS R 3203, meshed plate glass and lined plate glass defined in JIS R 3204, tempered glass defined in JIS R 3206, and tempered glass defined in JIS R 3208, and JIS R 3208. In addition to domestic and foreign-made plate glass that conforms to the standards for heat ray absorbing plate glass, heat ray reflecting glass specified in JIS R 3221, double strength glass specified in JIS R 3222, etc.
Flat glass that complies with the regulations of other countries corresponding to these may be used.

Next, in step S2, the glass is washed and dried. This step is to remove unnecessary substances such as dust and dirt, oils and fats, and metal ions attached to the glass surface, which have a great influence on the quality of the finished laminated glass. It is also important in ensuring the adhesive force between the glass and the sheet, which will be described later. As an example of this washing step, here, washing was performed with a weak alkaline detergent of 1/1000 concentration (volume%), followed by thorough rinsing, and further, rinsing with pure water to remove residual metal ions.

Next, in step S3, the sheet 2 is cut into a predetermined size so as to fit the size of the glass. Sheet 2 is Scot provided by 3M in this example.
I used ch Optical Lightning Film. This 3M sheet has a thickness of 0.5 mm, and is a film made of 100% polycarbonate in which one side has approximately 30 innumerable fine grooves 3 at 1 cm intervals and the other side has a substantially flat shape.
The groove 3 is formed by at least two sides that are sharply cut from one surface toward the other surface. Since this ready-made sheet 2 is usually supplied as a strip-shaped roll having a width of 952 mm and a length of 45.7 m, it can be pulled out from the roll and used depending on the usage amount. In addition, this ready-made sheet 2 has a width (952 m) with respect to a glass width of 2 m.
Since m) is not sufficient, it was decided to place several sheets in parallel with the glass surface and attach them to the entire glass surface. In addition, it is necessary to pay attention to storage and handling so that unnecessary substances such as dust do not adhere to the surface of the sheet.

The adhesive 5 serving as an intermediate layer between the two sheets of glass 1 is a liquid or gel-like adhesive, as well as a film-like solid solid that can be stuck to the surface of the glass and the sheet. Adhesives can be used. When this film-shaped adhesive 5 is used, like the sheet 2,
It is cut into a predetermined size so as to fit the size of the glass 1. Further, the film-shaped adhesive that is supplied as a strip-shaped roll can be pulled out from the roll and used depending on the amount used. Further, like the sheet 2, it is necessary to pay attention to storage and handling so that unnecessary substances such as dust do not adhere to the film surface.

As the film adhesive 5, a thermoplastic type or a heat cross-linking type which is mainly made of EVA resin can be used. Hereinafter, in this example, an adhesive agent, which was supplied from Bridgestone Corporation in a roll shape, and which was mainly made of a thermoplastic type EVA resin was used.

Since the film adhesive 5 also has a film width (usually 1.2 mm but existing up to 2.4 mm by custom order) narrower than the width of glass, it is similar to the glass as the sheet. By placing multiple sheets in parallel with the sheet, they were attached to the entire surface of the glass.

The cutting operation of the sheet 2 and the adhesive 5 was performed in a clean room, and was carefully performed so that unnecessary substances such as fats and oils, water, foreign matters and dust did not adhere to the sheet 2 and the adhesive 5. Regarding the clean level, it is ideal that no other unnecessary substances such as dust are mixed in the room, but the clean level may be taken into consideration in accordance with the required quality of the laminated glass.

In step S4, the glass 1, the adhesive 5, the sheet 2, the adhesive 5, and the glass 1 are stacked. It is necessary to perform this work in a clean room as well as possible to prevent other unwanted substances from mixing in between layers.

In this example, since the material of the sheet 2 is polycarbonate in particular, the sheet 2 is likely to expand and contract due to heat. Therefore, when a plurality of sheets 2 are closely arranged in advance, the sheets are thermally expanded in the step of applying heat, which will be described later, and the edges of the sheets collide with each other.
The sheet or glass may be misaligned. In order to avoid this misalignment and prevent interference between the sheets, it is desirable to place the sheets on the glass in advance with appropriate separation. The distance between the sheets may be appropriately adjusted depending on the type of the sheet used, the application temperature during the process, and the like.

Next, in step S5, primary bonding between the laminated layers is performed. A set of laminated glass is placed in a vacuum bag, and the air in the bag is removed by a vacuum pump. As a result, the air remaining between the layers of the laminated materials can be eliminated, and a state in which the materials are directly bonded can be surely created. In this example, the degree of vacuum is 740 mmHG
A vacuum was drawn for 1 hour at room temperature so that the temperature was as follows. Next,
After gradually heating and raising the temperature to about 90 ° C over about 2 hours, the temperature was maintained at 90 ° C for about 1 hour.

Due to this temperature zone, the adhesive interlayer film is softened / melted and flows best between the layers, so that the adhesive material can be sufficiently poured into the innumerable fine grooves 3 on the surface of the sheet 2. In addition, the air in the groove 3 is almost excluded from the sheet 2.

After that, the temperature is further raised to 100 ° C. over about 1 hour, and the temperature is kept at 100 ° C. for about 1 hour. At this temperature, the adhesive of the interlayer film begins to harden, and the adhesive force with other materials begins to be generated.

By the above primary bonding work, it is possible to prevent re-invasion of air even after the pressure is returned. When the primary bonding work is completed, a set of glasses is taken out from the vacuum bag and the main bonding work of step S6 is performed.

In the main bonding work, first, a set of laminated glass after the primary bonding work is put into an autoclave,
Gradually raise the temperature and increase the pressure, and hold at 135 ° C and 13 atm for 30 minutes or more. As a result, the adhesive film further penetrates into the groove of the sheet 2 and the excess residual air in the groove is also eliminated. However, in order to prevent adverse effects due to excessive heating of the sheet 2, it is necessary to strictly control the temperature and pressure.

As in the primary bonding work, when different adhesives are used, the grooves 3 on the surface of the sheet are sufficiently filled with the adhesive depending on the kind of the adhesive used. The temperature and time of addition are adjusted appropriately.

As described above, when the bonding work of this work is completed, the set of laminated glass is taken out from the autoclave and cooled to room temperature. The obtained laminated glass 10 is
Air is removed to a level that does not pose a problem in practical use, and it is possible to see through both surfaces, and it is possible to obtain double shadows that cause color differences.

Laminated glass 10 thus obtained
Is the multiple shades of objects in the other area from each other with the glass sandwiched between them, and from red (cough) to orange (to), yellow (to),
It has become possible to project in rainbow colors ranging from green, blue, indigo, and purple. Then, for example, when the laminated glass 10 is installed so that the groove 3 becomes horizontal, the floor seems to stand up, or the building stands up higher in the sky, while the groove 3 becomes vertical. When the laminated glass 10 is installed in, it is possible to give a strange feeling that a person's shadow chases the same person's shadow and give the viewer a special impression of being in a different dimension space or future city. Became.

In the above example, one sheet 2 is sandwiched between two sheets of glass 1. However, it is also possible to use a larger number of glasses 1 so that the sheets 2 can be inserted between them. A plurality of sheets 2 may be attached between the glasses 1.

When a plurality of sheets 2 are used, the grooves of the sheets 2 may be arranged so that the extending directions of the grooves are parallel to each other, or they may intersect at right angles or at other angles. You can put it in. Depending on how the sheet 2 is used, it is possible to obtain a laminated glass that produces different appearances and chromatic aberrations.

Further, in the above example, the flat glass 1 is used, but since the sheet 2 used has flexibility, it can be applied to the curved glass 1. And since it is possible to use various kinds of glass such as tempered glass, heat-resistant glass, and soundproof glass, for example, high-strength tempered glass, or large glass with a wide frontage, and even glass for small lighting, etc. It can be widely used in fields other than architecture.

[Brief description of drawings]

FIG. 1 is a partial perspective view of a laminated glass 10 showing one configuration example according to the present invention.

FIG. 2 is a partial side view of the seat 2.

FIG. 3 shows an example of a manufacturing process of the laminated glass 10.

[Explanation of symbols]

1. ． ． Glass 2. ． ． Sheet 3. ． ． groove 4. ． ． Top or apex 5. ． ． adhesive 10. ． ． Laminated glass

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tomohiko Mihoya             1-8-4 Nishiazabu, Minato-ku, Tokyo San Co., Ltd.             Hoya Glass Store F-term (reference) 4G061 AA02 AA04 AA11 AA20 AA26                       AA28 BA01 BA02 CA02 CA06                       CB03 CB04 CB19 CD02 CD17                       CD18 DA23 DA28 DA38 DA46

Claims (7)

[Claims] 1. A sheet having at least two sheets of glass and at least one surface on which a myriad of grooves extending substantially parallel to each other in one direction are formed, the grooves being adjacent to each other when the sheet is viewed from one side surface. A sheet having a side that stands up from the bottom to form a top, and has a transparent or translucent flexible sheet, and the sheet is sandwiched and bonded between the at least two sheets of glass, Laminated glass characterized by that. 2. The laminated glass according to claim 1, wherein the sheet is made of polycarbonate. 3. The laminated glass according to claim 1, wherein the sheet and the glass are bonded to each other with an adhesive made of a thermoplastic resin. 4. A sheet having at least two sheets of glass and at least one surface on which a myriad of grooves extending substantially parallel to each other in one direction are formed, the bottom portion of the groove being adjacent when viewed from one side surface of the sheet. A transparent or semitransparent flexible sheet having a side that stands up from the above to form a top, and a method for producing a laminated glass, wherein an adhesive is supplied between the sheet and the glass. A method for producing a laminated glass, characterized in that it is used as a layered glass, and the air between the layers is removed by heating the glass in a vacuumed environment to soften the adhesive to bond the layers. . 5. A method for producing a laminated glass, which comprises heating and pressing the laminated glass obtained in claim 4. 6. The method for producing a laminated glass according to claim 4, wherein the sheet is made of polycarbonate. 7. The method for producing a laminated glass according to claim 4, wherein the adhesive is a film-shaped solid material.