JPH04164842A - Laminated glass for vehicle - Google Patents

Abstract

PURPOSE:To obtain a laminated glass for vehicle improved in lightweight and safety by laminating and integrating a glass sheet, transparent adhesive layer and transparent synthetic resin film layer using a fine wire in a specific manner. CONSTITUTION:In a laminated glass for vehicle obtained by combining a glass sheet having <=4mm thickness, transparent layer and transparent synthetic resin film layer and laminating and integrating the combination, the glass is constituted as follows: at least one piece of fine wires or/and reticulations formed of the fine wire having 10cm<2> dimensions are provided in an area within width of 200mm from end edge of the laminated glass for vehicle or/and area within the width of 100mm symmetrically in center line of the laminated glass for vehicle or in adhesive layer part of at least one area among total area of the above-mentioned laminated glass. The laminated glass can be adapted for vehicle as well as for building, interior use, furniture, etc.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention is a method of combining at least various thin glass plates with a thickness of 4 mm or less and transparent synthetic resin film layers and laminating them via a transparent adhesive layer. By laminating fine wires in the adhesive layer portion of a specific area of the laminated glass plate, and laminating the mesh with a unique size formed by the fine wires, it is possible to particularly achieve greater weight reduction and safety. The object of the present invention is to provide a laminated glass for a vehicle that has the following features, and is particularly useful as a windshield for an automobile.

[Conventional technology]

Recently, the need for energy conservation has become particularly desirable due to global environmental issues and global resource issues, and measures are being taken to improve fuel efficiency in automobiles, one of which is the improvement of automobile windows. There is weight reduction in glass.

On the other hand, there is a growing need for improved safety and livability in order to lead a comfortable life, and various measures are being taken in automobiles and the like.

For example, Japanese Patent Publication No. 45-2317 discloses that in a laminated vehicle wall body in which two glass plates are separated in parallel by a transparent plastic layer bonded to these plates, the inner glass plate is thinner than the outer glass plate. is reinforced by a surface zone with compressive internal forces, so that the inner glass pane (a
) greater breaking resistance to the contact body than the outer glass plate;
The laminated vehicle wall has (b) greater flexibility than the outer glass pane and (c) the ability to break into smaller particles when broken, rather than into relatively large fragments like the outer glass pane. The inner glass plate has a thickness of about 1.5 to 2.25 mm and the outer glass plate has a thickness of about 1.75 to 3 mm. The inner glass plate has a thickness of On+aI and is dropped from a height of 2 m2.
It is reinforced to withstand the impact of a 25gr steel ball.
The outer glass panel must be destroyed by the impact of a 225g steel ball falling from a height of 2m, and the area of the fragments within a 15.2cm radius of the impact zone in the event of destruction is 2.15%.
- It is stated that if the outer glass plate is broken, at least 90% of the impact zone area becomes fragments with an area larger than 6.45 ci. ing. In addition, the special public corporation Showa 5
8-19616, the outer glass has a thickness of 3III.
The inner glass is a tempered glass plate with a thickness of 1.0 mm to 1.9 + am, which has been given an average bending strength of 2500 Kg/- or more by strengthening treatment, and the bending strength σ and the thickness t are The product of the squares σt2 is 60
A laminated glass for vehicles that is adjusted to weigh between 97 kg and 97 kg is disclosed. Furthermore, Japanese Patent Application Laid-Open No. 49-55776 discloses a hard transparent plate-like body and a thickness of 0.025 mm to 0.25 mm.
m, tensile strength is 352Kg/cm2 or more, and 15
A non-destructive transparent plastic film with a final elongation of 0% or less, with a thickness of 0.12a+m to 1.52mm and a tensile strength of 45
An impact-resistant transparent laminated structure is disclosed, which is bonded by a transparent plastic interlayer film having a tensile strength of 7 Kg/ad or less, a tensile strength of the non-destructive transparent plastic plate, and a final elongation of 150% or more, and comprising an organic silicon film. It is described that the top surface of the PET film may be coated with a scratch-resistant coating. Furthermore, Japanese Utility Model Application No. 50-60375 discloses that a metal net is fixed to the surface of a base material made of a transparent glass plate or plastic plate, or between a plurality of these plates with a polyvinyl acetate adhesive. For example, a laminate containing a net is disclosed.

[Problem that the invention seeks to solve]

The ones described in Japanese Patent Publication No. 45-2317 and Japanese Patent Publication No. 58-19616 mentioned above are laminated glass made of thin glass, especially reinforced thin sheets that are thinner than the outside glass sheet as the inside glass sheet. By using a glass plate as a windshield for automobiles, we aim to reduce the impact received by occupants in the event of a collision, reduce lacerations sustained to the face, etc., and improve the resistance to head penetration of laminated glass and the resistance to destruction by flying pebbles, etc. Although we are trying to obtain a laminated glass that gives flexibility and elasticity, maintains high fracture resistance, and also has the ability to break into small, non-sharp pieces when broken, it is not always necessary to meet the recent requirements for penetration resistance, etc. It is difficult to say that it fully satisfies the needs of people. Furthermore, although the product described in Japanese Patent Application Laid-Open No. 49-55776 satisfies the various demands mentioned above, it is not necessarily sufficient to meet the recent needs for achieving more completeness and perfection. is difficult to say. Furthermore, the product described in Japanese Utility Model Application Publication No. 50-60375 has poor transparency, and even if transparency were improved, it would not necessarily be able to fully satisfy the various strengths etc. mentioned above. Therefore, it is difficult to say that it can be adopted as a window glass for automobiles.

[Means for Solving the Problems] The present invention was made in view of the above-mentioned problems, and consists of laminating and integrating various combinations of thin glass, transparent synthetic resin films, and transparent adhesive layers. On this occasion,
By placing fine wires in the adhesive layer that have a unique shape and size in specific areas of the laminated glass, it provides optimal flexibility and elasticity while reducing weight. , and maintains high fracture resistance.
Furthermore, we provide laminated glass for vehicles that can further improve penetration resistance and ensure sufficient transparency, further increasing safety not only for passengers but also inside and outside the car window glass, and achieving greater energy savings. It is something to do.

That is, the present invention provides at least one sheet with a thickness of 4III
+ In a laminated glass for a vehicle formed by laminating and integrating the following glass plates, a transparent adhesive layer, and a transparent synthetic resin film layer in various appropriate combinations, an area within 200 IllllI from the edge of the laminated glass for a vehicle or / and at least one fine wire in the adhesive layer portion of at least one area of the area within 100++ uw symmetrically to the center line of the laminated glass for vehicles, or the entire area of the laminated glass, and/and the fine wire 1. A laminated glass for a vehicle, characterized in that a plurality of mesh meshes each having a size of at least 10 CIA are arranged and laminated. Further, the laminated glass for a vehicle is characterized in that the fine wire has a diameter of 100 to 10 μm and a tensile strength of 600 to 100 Kg/ms.Furthermore, a ceramic baked layer in the periphery of the laminated glass for a vehicle. Provided is the laminated glass for a vehicle, characterized in that at least one or more of the fine wires and/or the network formed by the fine wires are provided in the adhesive layer portion and laminated in the coating region. It is something to do.

Here, adhesion of at least one area of the area within 200 mm from the edge of the laminated glass for vehicles, and/or the area within 100 mm symmetrically to the center line of the laminated glass for vehicles, or the entire area of the laminated glass. The layered portions are laminated with at least one fine wire and/or a plurality of meshes each having a size of at least 10 aJ made of the fine wires to ensure better transparency, reduce weight, and make the wires as appropriate. Adjust flexibility and elasticity to make it more fracture resistant.
This is to make it more resistant to penetration and more resistant to being thrown out, and especially from the edge to 2001III1.
within the area or/and symmetrically to the center line
It is preferable to use the area within 0-- and fine wires mainly on the windshield or rear glass, and the entire area and the mesh to mainly use on the rear glass, side glass, and roof glass. For example, in the case of a so-called black frame, it is more preferable to arrange more than one, that is, a plurality of or/and the mesh. In addition, from the viewpoint of penetration resistance, etc., it is preferable that the spacing between the fine wires is such that at least two fine wires can hang around the passenger's head, and the mesh size should be 10 aJ or more. This is because of the above-mentioned considerations and transparency, and is preferably about 25 aJ or more.

Furthermore, the reason why at least one glass plate having a thickness of 4 mm or less is used is, for example, a laminated structure in which a transparent synthetic resin film or a synthetic resin layer is coated directly or via an adhesive layer on - glass plates, that is, single glass plates. When doing so, a glass plate is used on the outside of the vehicle, and the thickness of the plate is 4s+m or less, preferably about 3.5mm to 1.1m, more preferably 3.5mm thick.
For example, when using a glass plate on the outside of the car through an adhesive layer or an adhesive layer and a synthetic resin film layer, the outside of the car should be 3.0 mm.
The plate thickness is preferably about 1.111101 mm, more preferably about 2.5 mm to 1.5+ nm, and 2.5 mm to 1.5 nm for the inside of the car. The plate thickness is preferably about On+m to 1.0LllI11, more preferably 1.8柭tri-1,
It is about 2 mm. The glass plate may be either inorganic or organic, and may be any transparent material such as a so-called glass plate, a polycarbonate resin plate, an acrylic resin plate, etc. Preferably, it is an inorganic glass plate, and colorless or various colored ones or Those with infrared and ultraviolet absorption functions, those that have been made multifunctional by various surface treatments such as film coating, and those that have been processed in various ways, such as those that have increased strength or have been reinforced in various ways, and those that have been bent. For example, it is preferable to use glass plates on the outside of the car that have been subjected to various strengthening treatments to increase their strength, and for glass plates on the inside of the car that have undergone various types of strengthening treatments.
By skillfully combining the above-mentioned features, it becomes even more sophisticated and multifunctional, making it even more desirable.

Furthermore, as a transparent adhesive layer, for example, a polyvinyl butyral (PVB) film! , an adhesive thermoplastic polyurethane resin film layer, an ethylene-vinyl acetate copolymer (EVA) resin film layer, etc. by liquid fixation, film-like welding, etc. Among them, PVB Jli is the best one. The thickness of the layer is about 1000μm to about 50μm, preferably about 800μm to 130μm, more preferably about 7μm.
It is about 60 μM to 350 μM.

Furthermore, examples of the transparent synthetic resin film layer include polyethylene terephthalate (PET), polyurethane, vinylidene chloride, polyvinyl chloride, etc.
Among them, PET or polyurethane is preferable, and the thickness is about 1000 μm to 25 μm, preferably 8008 m to 50 μm, and more preferably 500 μm to 100 pm. The surface of the film layer may be coated with various multifunctional layers such as a hard coat layer, an infrared and ultraviolet reflection/absorption film layer, and a colored layer. Alternatively, the liquid material may be applied directly to form a fixed film layer, and in this case, an adhesive layer may or may not be used.

Furthermore, the diameter of the fine wire is 100~
10III, tensile strength 600-100K
The reason why a diameter of 7 mm 2 is preferable is that if the diameter exceeds 100 pm, it may press against the thickness of the adhesive layer and act in a shearing manner. If it is less than 10 ulI, for example, it is too fine to provide reinforcement for elasticity, penetration resistance, etc., and it is likely to be difficult to achieve the intended purpose in terms of strength. Furthermore, if the tensile strength exceeds 600Kg/l11m", it becomes difficult to obtain the desired flexibility or elasticity, and in addition,
This is because it is difficult to obtain a tensile strength that exceeds 600 Kg/nm2 at around JII+, and 100 Kg/I
This is because if it is less than IIm, it becomes difficult to support the impact on the thin glass plate on the outside of the vehicle, that is, to reinforce the elasticity, penetration resistance, etc. of the synthetic resin film layer or the adhesive layer.
It is preferable that the wire has a tensile strength of 2 to 550 kg/mm. The fine wires may be made of metal, inorganic, or organic, but are preferably made of metal or inorganic, with metal being more preferred. It goes without saying that it is better to match the thermal expansion coefficients of the wires as much as possible, and that the surface of the wires may be subjected to various treatments.

Note that the fine wires may be arranged and laminated in advance by being placed on an adhesive film layer or the like by means of adhesion or the like, or they may be placed during lamination. Further, the lamination method is not particularly limited, and any known method may be used as long as it can be carried out efficiently.

[Effect]

In the laminated glass for vehicles of the present invention, thinner glass plates, transparent adhesive layers, and transparent synthetic resin film layers are laminated and integrated in various pieces, and fine particles are formed in specific areas of the adhesive layer. By deploying wires, we can ensure sufficient transparency and reduce weight without reducing adhesive strength or weather resistance durability.Moreover, the elasticity of the synthetic resin film layer and adhesive layer is improved. By reinforcing the penetration resistance, the flexibility and elasticity of the laminated glass itself can be optimized, and the impact from the inside of the thin glass plate on the outside of the vehicle is absorbed and alleviated, resulting in higher fracture resistance. In the event of a collision, the impact received by the occupant's head is small and difficult to penetrate, and in addition, it is resistant to destruction from flying objects such as pebbles from the outside of the car, and in the event of a crash, the glass inside the car will be broken into non-sharp pieces. It can be used to reduce lacerations to the human body, provide appropriate visibility, and be resistant to falling and scattering, and can also be multifunctional with optical and thermal properties, etc., and can save energy. It is something that can contribute to both resources and the environment, and can also make it safer and more livable in terms of human and material aspects.

[Embodiment 1] An embodiment of the present invention will be described below based on the drawings. However, the present invention is not limited to these embodiments.

FIG. 1 shows a laminated glass for a vehicle according to the present invention, in which (a) is a front plan view thereof, (b) is a sectional view along the long side along line B-B in (a), and (c ) figure and (d) figure is (a)
The cross-sectional views of the shorter side taken along the lines CC and D-D in the figure are shown respectively, and the laminated glass for a vehicle is a windshield for an automobile, and the bent size is approximately 100cm x 60ai. The outside glass plate 2 has a thickness of about 2Al111 and has been treated to increase its strength, and the inside glass plate 3 has a thickness of about 1.5 mm and has been strengthened, and has a diameter of about 10 μm to 12 μm and has tensile strength. The adhesive layer 4 is made of a PVB film with a thickness of about 0.76 nv, on which fine wires of about 550 Kg/l1lII12 are attached and arranged, and are laminated together using a conventional lamination method. .

(a) The figure shows the above-mentioned fine wire 5.5゜ being placed in an area within about 100mm from the edge of the glass plate and symmetrically about the center line with a width of about 50mm.
It is a front plan view in which two wires are arranged in each area of about III11, and (b) is a sectional view on the long side along the line B-B in (a), which shows the transparent adhesive layer 4. A vertical wire 5 is placed on the surface of the PVB film on the inside glass plate 3 side.
This shows the state in which horizontal wires 5' are arranged and laminated on the surface of the vehicle exterior glass plate 2, and Figures (C) and (D)
The figures are cross-sectional views of the short side taken along lines C-C and D-D in figure (a), respectively, and show the state in which vertical and horizontal wires 5 and 5'' are arranged and stacked in the same way as described above. .

The laminated glass for vehicles obtained above was evaluated for various physical properties by tests according to JIS standards for automobiles, such as impact resistance, penetration resistance,
When we tested transparency, #Ig scratch resistance 1 weather resistance, etc., we found that conventional products (for example, two glass plates of the same size and thickness 2o+m and
．． This is an improvement over the 76mm PVB Nu laminated glass, and is approximately 1.
The result is laminated glass for vehicles that is approximately 2% lighter.

Figure 2 shows another embodiment of the present invention, which is a side glass for an automobile that has been bent into a shape similar to a flat plate, and has a size of about 60 cm.
Vehicle exterior glass plate 2, mX50cm, plate thickness approximately 1.8mm,
Using a car interior glass plate 3 with a thickness of about 1.2 am, and other parts similar to those shown in FIG. FIG. 2 is a partially enlarged perspective view of the laminated glass for a vehicle, showing a state in which the glass is laminated and integrated in the same manner as described above.

When the obtained side glass was subjected to various physical property evaluations similar to those described above, it was found that the laminated glass for vehicles was almost the same as that described above, and was also about 25% lighter than the conventional product.

Fig. 3 shows another example of an automobile windshield having a transparent synthetic resin film layer, in which a synthetic resin film layer (PET) 6 with a thickness of about 100 μ- is coated with a hard cord layer 7 on the inside surface of the vehicle, and a plate. Two sheets of 4.4'' of PVBM with a thickness of approximately 0.38 s+m are sandwiched between the vehicle exterior glass plate 2 with a thickness of approximately 3.5 mm, and the exterior PVBIIIi4' (7) is placed on both the front and back surfaces as described in No. 111!J. It is a partially enlarged perspective view of a laminated glass for a vehicle in which fine wires are similarly arranged and laminated and integrated.

When the obtained windshield was subjected to various evaluations similar to those mentioned above, the same results as mentioned above were obtained, and the weight was reduced by approximately 26%.
We were able to reduce the front and back.

Figures 4 and 5 show a vehicle exterior glass plate 2 with a thickness of approximately 2.0 mm colored by heat ray and ultraviolet absorption, and a plate thickness of approximately 1.5111 mm.
Partially reinforced car interior glass plate 3, thickness approx. 0.38I
Int PVB film 4.4', about 100 pm thick P
The ET film 6 is a windshield in which the aforementioned vertical and horizontal fine wires 5.5゜ are arranged in a plane as shown in Fig. 1, and in cross section, the positions of each layer and wire are changed and integrated into a laminated structure. It shows a partially enlarged side sectional view of another embodiment.

Various evaluations of the obtained windshield yielded the same results as described above, and the same reduction in weight as described above was achieved.

In addition to the present invention described above, the present invention was carried out in various ways, and the laminated glass for vehicles was obtained which showed evaluation results equal to or better than those described above and a reduction in weight.

〔Effect of the invention〕

According to the present invention, a thin glass plate with a thickness of 4Illffl or less, a transparent adhesive layer, and a transparent synthetic resin film layer are laminated and integrated in various combinations, and various fine wires are attached to the adhesive layer in specific areas. By deploying it in a unique position, it is possible to ensure visibility without obstructing the visibility of passengers, etc., and it is possible to reduce weight without reducing weather resistance and durability, and to improve flexibility and elasticity. Optimally achieved, it absorbs and alleviates impacts, increases fracture resistance, and has high penetration resistance, low tear resistance, and high resistance to falling and scattering against collisions by passengers and flying objects such as pebbles. It not only increases safety, can be multi-functionalized, and has high livability, but also contributes to a better environment and resource conservation in terms of both human and physical aspects.
It has the advantage that it can be used not only for vehicles but also for a wide range of applications such as architecture, interior decoration, and furniture.

[Brief explanation of drawings]

Claims (1)

[Scope of Claims] 1) A laminated glass for a vehicle that is formed by laminating and integrating at least one glass plate with a thickness of 4 mm or less, a transparent adhesive layer, and a transparent synthetic resin film layer in various appropriate ways. Fine particles are applied to the adhesive layer in an area within 200 mm from the edge of the laminated glass for vehicles, and/or an area within 100 mm in width symmetrically to the center line of the laminated glass for vehicles, or at least one area of the entire area of the laminated glass. 1. A laminated glass for a vehicle, characterized in that the laminated glass is made by laminating at least one fine wire or/and a plurality of meshes each having a size of at least 10 cm^2 made of the fine wire. 2) The fine wire has a diameter of 100 to 10μ
The laminated glass for a vehicle according to claim 1, having a tensile strength of 600 to 100 kg/mm^2. 3) At least one or more of the fine wires and/or the mesh formed by the fine wires are provided in the adhesive layer portion in a coating region such as a ceramic baked layer in the peripheral portion of the laminated glass for vehicles. The laminated glass for a vehicle according to claim 1 or 2, characterized in that the laminated glass is laminated.