WO2014014241A1

WO2014014241A1 - Method of manufacturing bulletproof panel

Info

Publication number: WO2014014241A1
Application number: PCT/KR2013/006296
Authority: WO
Inventors: 김일순
Original assignee: Kim Ilsoon
Priority date: 2012-07-15
Filing date: 2013-07-15
Publication date: 2014-01-23
Also published as: KR101258388B1

Abstract

When installing a bulletproof panel on glass for vehicles and the outer windows of vessels, submarines, and buildings that are in contact with outdoor air, it is impossible to avoid phenomena such as freezing and condensation, which have adverse effects on providing a clear view through the bulletproof panel. Also, when polycarbonate is used to increase the bulletproof performance of a bulletproof panel, unfavorable qualities of polycarbonate may occur such as yellowing, efflorescence, and scratching, which are obstacles to providing a clear view. To solve the yellowing and efflorescence drawbacks of polycarbonate, nano ceramic films are attached to the inside and outside of the polycarbonate, respectively. To solve the problem of freezing, a heating layer is added. To prevent condensation and scratching, an antifogging coating and a scratchproof coating are added to the nano ceramic film on the inside of the polycarbonate. To allow raindrops and muddy water to rapidly flow down in case of rain, a water-repellent coating is added.

Description

Bulletproof panel manufacturing method

In general, the highest performance required for bulletproof panels for the purpose of preparing for various threats such as firearms and explosives is bulletproof and explosion-proof.However, when bulletproof panels are installed in vehicle glass or outdoor windows, sufficient visibility is required in addition to bulletproof and explosion-proof performance. to be. The present invention relates to a bulletproof panel capable of suppressing yellowing, whitening, freezing, misting, scratching, and the like, which are obstacles to securing the visibility of the bulletproof panel, and a method of manufacturing the same.

In modern society, self-protection of self-protection of life and property is becoming more common due to the increase of national income and the improvement of living standard, especially bulletproof equipment (e.g. shield of speech stand, bulletproof glass of vehicles) Increasingly, the demand and application range of structures, monitoring windows, etc. are increasing day by day, and the need for bulletproof panels to prepare for unspecified risks is also increasing.

The main components of the bulletproof panel include a bulletproof film, glass, plastic material, and an adhesive for bonding them. In some cases, the bulletproof panel may be composed of a film alone, or may be composed of glass alone. In the case of the glass alone, the thickness of the bulletproof panel is increased and the weight is increased. As the thickness becomes thicker, light transmittance decreases, which may make it difficult to secure a field of view in a crisis situation.

For this reason, various researches and developments have been conducted to increase the bulletproof performance of bulletproof panels, reduce thickness and weight, and increase light transmittance. To date, the most efficient alternative is to attach polycarbonate (hereinafter referred to as 'PC') to the inside. Is one of.

PC is a resin material that is resistant to impact and heat, and is transparent, and is lighter than glass and has excellent energy absorption. Thus, even if a PC having a thickness thinner than glass is used, the impact resistance of the bulletproof panel can be greatly improved. Unlike glass, which is destroyed during a bomb collision and causes secondary damage (damage that destroys the inside of bulletproof panels such as glass and damages internal lives or property even when bullets are not penetrated), PC Since destruction does not occur, the secondary damage can be prevented by placing the PC inside (including the case where the glass + PC is bonded).

In this way, when the PC is attached to the inside, bulletproof performance is more excellent than that of the bulletproof panel made of glass or film, while the bulletproof panel is thinner, lighter in weight, and thinner. Secondary damage can be prevented by preventing the PC from scattering fragments of the substrate such as glass contained in bullets or bulletproof panels.

However, PC has the above-mentioned advantages, but it is vulnerable to UV rays and heat, so yellowing and bleaching occur over time, and it is also vulnerable to scratches, making it difficult to secure sufficient visibility gradually as the use period elapses. There are bound to be problems that shorten the practical life of the device.

An example of applying a PC to a bulletproof panel is [Korean Patent 10-1038032]. Although this patent uses a PC in the reinforcing layer 70 (see FIG. 1), there is no countermeasure against bleaching and yellowing occurring in the PC when exposed to ultraviolet rays or heat for a long time, and another variable causing problems in securing the field of view. In addition, there is no provision for protection against freezing, steaming, and rain and muddy water in rainy weather. Therefore, when installing the bulletproof panel on the vehicle glass in contact with the outside air, ships, submarines, buildings, etc. Problems that adversely affect visibility, a critical variable for panel performance, are inevitable, and the effectiveness and lifespan of bulletproof panels are also reduced.

In the case of bulletproof panels that do not use a PC, on the other hand, it may be difficult to secure a field of view due to freezing or frostiness. Examples of such cases include [Korean Patent 10-1025474] and [Korean Patent 10-0665378]. There is this. The former is mainly composed of glass and film (see Fig. 2), and the latter is a structure in which shock absorbing layers (S, S1) are disposed between the glasses (see Fig. 3). In addition, since there is no consideration of visibility obstacles due to rain or muddy water in rainy weather, when such a bulletproof panel is installed in an exterior window of a building or an automobile glass, it is difficult to grasp the external situation due to the obstacle of visibility, and it is necessary to promptly respond in case of emergency. This can make coping difficult.

In general, bulletproof performance is the most important requirement for bulletproof panels. However, in order to deal quickly and appropriately in a crisis situation, securing the visibility of bulletproof panels is also urgently required.

For this reason, bulletproof panels are generally manufactured in a transparent form with high light transmittance. When the bulletproof panels are installed in vehicle windows contacting the outside air, ships, submarines, or exterior windows of buildings, the panels may be freeze due to cold weather or internal / external. Steaming due to temperature differences between the liver and rain or muddy water in rainy weather can cause vision problems. In addition, as described above, when the polycarbonate (hereinafter referred to as 'PC') is attached to the rear side (inner side) in order to increase the bulletproof performance of the bulletproof panel, the impact energy can be absorbed more efficiently, while the yellowing phenomenon, which is a weak point of the PC Problems such as obstacles in securing the field of view such as over-whitening, scratches, and the like.

In the bulletproof panel, the yellowing phenomenon and the whitening phenomenon, which are fatal to the visibility of bulletproof panel, the frost phenomenon caused by cold weather, the frostiness caused by the temperature difference between the inside and the outside, the scratch, and the visibility obstacle due to rain or muddy water during rainy weather It is aimed at ensuring sufficient visibility of the bulletproof panel by solving such problems, and thereby enabling safe and quick response in a crisis situation.

As described above, the PC has a problem of whitening and yellowing when exposed to ultraviolet rays or heat for a long time, and a weakness to scratches. These phenomena make it difficult to secure a field of view and lose the value of bulletproof panels. It causes fatal problems that shorten the life of bulletproof panels.

In the present invention, in order to solve the whitening and yellowing of the PC, a nanoceramic film was attached to the outside (outside the PC) and the inside (inside the PC) of the PC. Nanoceramic films generally have a durable life of more than 30 years and are excellent in blocking ultraviolet rays and solar heat, which cause bleaching and yellowing, and thus can be semi-permanently resolved.

Also, since sunlight is incident from all angles, attaching the nanoceramic film only outside the PC is not a complete solution. In the present invention, the nanoceramic film is attached not only to the outside of the PC but also to the inside of the PC to block ultraviolet rays and solar heat inside and outside the PC, thereby fundamentally blocking the occurrence of whitening and yellowing.

In addition, in the present invention, in order to suppress the fog caused by the temperature difference between the inside and the outside, an anti-fog coating was added to the nanoceramic film attached to the inside of the PC. Since the anti-fog does not occur outside the bulletproof panel but only inside, it is sufficient to apply anti-fog coating only to the innermost nanoceramic film, and the nanoceramic film inside the PC is susceptible to scratches. An anti-scratch coating was added to protect the.

In addition, in the present invention, in order to solve the freezing phenomenon occurring in cold weather, a heating layer was added to the bulletproof panel.

Finally, in the present invention, by adding a water-repellent coating on the outermost side of the bulletproof panel (front of the glass part), the rainwater or muddy water flows down the surface of the bulletproof panel during rainy weather and heavy rain, thereby making it easier to secure the field of view.

By doing so, in the present invention, the bleaching phenomenon, yellowing phenomenon, freezing phenomenon, frostiness phenomenon, scratch, which can be a obstacle to securing the field of view of the bulletproof panel, and all the obstacles due to rain or muddy water during rainy weather, etc. It was.

The effects of the present invention are as follows.

First, it suppresses bleaching and yellowing that occur when polycarbonate is exposed to ultraviolet rays and heat for a long time, and freezes and mists caused by bad weather or temperature difference, scratches on the surface of bulletproof panels, and rainy weather. By suppressing the field of vision caused by rain or muddy water, it is possible to secure a sufficient field of view.

Second, through sufficient visibility, it was possible to respond quickly and appropriately in crisis situations.

Third, the life span of the bulletproof panel can be extended by suppressing whitening, yellowing, and scratches.

Fourth, by extending the life of the relatively expensive bulletproof panel, it can be expected to reduce the economic loss of users.

1 is a representative view of [Korean Patent No. 10-1038032]

2 is a representative view of [Korean Patent No. 10-1025474]

3 is a representative view of [Korean Patent No. 10-0665378]

Figure 4 is an embodiment and representative of the present invention

5 is an embodiment of the present invention using an adhesive film having a UV blocking function, except for the nano-ceramic film on the outside of the PC

Figure 6 is an embodiment of the present invention using a UV adhesive having a UV blocking function, except for the nano-ceramic film on the outside of the PC

7 is an embodiment of the present invention added a heating layer

Table 1 shows the characteristics of the nanoceramic film

The best mode for carrying out the invention is shown in Figures 4 and 7. In the present invention, as shown in FIG. 4, the front glass part 10 composed of at least one glass, the nanoceramic film 30 for suppressing the whitening and yellowing of the polycarbonate is disposed outside the polycarbonate 40, Polycarbonate 40 for effectively absorbing impact energy and minimizing secondary damage caused by debris such as internal substrate, and disposed inside the polycarbonate 40 to suppress whitening and yellowing of polycarbonate. The bulletproof panel was composed of nanoceramic film 31, and the anti-fog coating and anti-scratch coating were added to the nanoceramic film 31 inside the polycarbonate, thereby preventing yellowing phenomenon, which is a major factor that obstructs the view of the bulletproof panel. Whitening, steaming and scratches were suppressed.

In addition, as illustrated in FIG. 7, the heating layer 100 is added to the bulletproof panel, and power is supplied to remove freezing generated in the bulletproof panel, and a water repellent coating is added to the front of the bulletproof panel (front of the glass part). This increases the speed at which rainwater or muddy water flows down the surface of the bulletproof panel during rainy weather, making it easier to secure the field of view.

Detailed description of the invention will be described with reference to FIG. First, the glass used for the glass part 10 of the front surface may use back glass or tempered glass, but the back glass or tempered glass has a disadvantage in that a relatively large obstacle occurs in securing a field of view after an impact due to the wide fracture radius caused by the shooting. Therefore, it is more preferable to use ordinary glass (plate glass) having a low impact resistance but a relatively low breakdown range (see Figs. 8A and 8B of Korean Patent No. 10-1258388. Fig. 8A is 5.56mm in the K1A submachine gun). The shooting radius was about 160mm, and the fracture radius of the gun was shot on ordinary glass with 5.56mm bullets on the K1A submachine gun. The breaking radius was about 90mm. Depending on the performance and purpose of the panel, only one sheet may be used, or a plurality of glasses may be laminated and used.

In order to bond the front glass 10 and the nanoceramic film 30 on the outside of the PC, various adhesives and adhesive films including UV adhesives, EVA films, PVB films, and the like may be used. When debris or the like collides with the glass part 10 on the front surface, it also increases the frictional resistance against the scattering of the debris of the glass part 10. In general, the UV adhesive is most effective in terms of adhesive strength and scattering prevention effect. great.

In order to use the UV adhesive, when the UV adhesive is applied between the glass portion 10 and the nanoceramic film 30 and passed through the UV irradiation apparatus, the photoreaction initiator in the UV adhesive starts to react and cures within a few seconds. The EVA film and the PVB film are bonded by applying heat in the heat treatment bonding machine after attaching the film between the glass portion 10 and the nanoceramic film 30.

In addition to the nanoceramic film, there are other types of UV blocking films, such as a deposition film (metal film). Since the deposition film has a short lifespan and problems such as reflection of light due to metallic materials, nanoceramic films are used for the purpose of UV protection. It is desirable to. Nanoceramic films are semipermanent in durability (30 years), have a characteristic of 85% of visible light transmittance (VLT), 99.9% of UV blocking, and 50% of TSER (total solar blocking rate) (Nanoceramic of Table 1 below). Film properties).

Table 1

Item	characteristic
Infrared ray blocking rate	99%
UV protection rate	99.9%
VLT (Visible Light Transmittance)	85%
TSER (Total Solar Blocking Rate)	50%
durability
	30 years (semi-permanent)

Since the nanoceramic film is generally coated with an adhesive on one side, the polycarbonate 40 and the

nanoceramic films

30 and 31 may be bonded to each other by adhering the adhesive-coated surface to the polycarbonate 40. As such, the

nanoceramic films

30 and 31 are disposed on the front and rear sides of the polycarbonate 40 to block ultraviolet rays and solar thermal energy that cause whitening and yellowing of the polycarbonate, thereby ensuring a transparent field of view. The durability of the bulletproof panel can be improved. Placing the

nanoceramic films

30 and 31 on the rear side in addition to the front side of the polycarbonate is because sunlight is incident from the front side as well as the rear side of the bulletproof panel. It also enters the inside of the windshield through all glass windows, including the glass on the side and the glass on the back. Therefore, the nanoceramic film should be placed on the inside as well as the outside to effectively block the ultraviolet rays that cause whitening and yellowing on the PC.

On the other hand, the nano ceramic film can be selectively applied to the visible light transmittance (VLT) according to the purpose of use, for example, in places requiring security for personnel and facilities, it is not visible from the outside, and can be viewed from the outside from the inside. Bulletproof panels can also be configured.

Polycarbonate (40) is generally tensile strength? Flexural strength? It has high impact resistance, and has excellent impact energy absorption capacity of 150 times of tempered glass, 250 times of plate glass, and 30 times of acrylic. By placing the polycarbonate 40 having such excellent performance on the rear surface of the glass part 10 as shown in FIG. 4, the impact energy can be effectively absorbed, and the secondary damage caused by the scattering of the fragments of the bulletproof panel substrate can be effectively suppressed. Can be.

Next, the anti-fog coating was added to the nanoceramic film 31 inside the PC because the anti-fog may occur due to a temperature difference with the external temperature inside the bulletproof panel, making it difficult to secure a field of vision. An anti-scratch coating was also added to the film 31 to prevent visual disturbances caused by impacts or scratches.

In addition, in the present invention, the heat generating layer 100 is added to the bulletproof panel as shown in FIG. The heating elements that can be used in the heating layer 100 are large linear heating elements such as heating wires (for example, heating elements using filament, nichrome wire, etc.) and planar heating elements (for example, carbon nanotubes, ITO, ATO, FTO, AZO, IZO, GZO, NTO, graphene, etc. heating element) can be divided into a linear heating element does not generate electricity because the electricity does not go through any part of the line, and when the heating wire is thick, there is a problem that the vision is obstructed, Planar heating elements are preferred to linear heating elements.

Planar heating elements include carbon nanotubes, Indium doped Tin Oxide (ITO), Antimony doped Tin Oxide (ATO), Fluor doped Tin Oxide (FTO), Aluminum doped Zinc Oxide (AZO), Indium Oxide doped ZnO ), Transparent heating elements manufactured using various materials and techniques such as GZO (Galium doped Zinc Oxide), NTO (Niobium doped Titanium Oxide), and graphene. The method of manufacturing (depositing) such a heating element may vary depending on materials and uses, and specific manufacturing methods and characteristics are irrelevant to the nature of the present invention, and thus detailed description thereof will be omitted.

In the present invention, by adding the heat generating layer 100 using the transparent heating element to the bulletproof panel as shown in Figure 7, the freezing phenomenon occurring in the bulletproof panel was solved. The position of the heat generating layer 100 can be placed anywhere in the bulletproof panel, but direct bonding with the front glass part 10 is best in terms of the processing time of the icing, and when placed inside the PC, the damage from the impact can be minimized. Instead, it will increase the time it takes to melt the ice.

The method for bonding the heat generating layer to other components in the bulletproof panel may be a UV adhesive or the like, as in the case of adhering the glass portion 10 and the nanoceramic film 30 to the front. It is preferable to use the same method also when bonding glass together in order to comprise two glass.

Finally, in the present invention, a water repellent coating was added to the front of the bulletproof panel of the bulletproof panel (front of the glass part). Water repellent coating is to increase the speed of rainwater or muddy water on the surface of bulletproof panels during rainy weather by increasing the surface tension of water or increasing the contact angle, making it easier to secure the field of view. It can be coated by a method of adding, spraying the coating solution with a spray, coating the water repellent coating film, or the like.

As described above, in the present invention, the

nanoceramic films

30 and 31 may be disposed inside and outside the PC to prevent whitening and yellowing which may occur in the bulletproof panel using the PC, and the nanoceramic film 31 inside the PC may be prevented. The anti-fog coating and the anti-scratch coating were added to solve the anti-fog and the scratch, and the heating layer 100 was added to solve the freezing phenomenon of cold weather, and the water-repellent coating was added to the outermost side of the bulletproof panel. Clear vision due to rain or muddy water.

In addition, the present invention can be expected to reduce the economic loss of users of bulletproof panels by increasing the life (life of the bulletproof panel) of the relatively expensive bulletproof panel by solving the main problems that obstruct the visibility of the bulletproof panel.

4 and 7 presented in the best mode for carrying out the present invention, UV blocking rate of UV adhesive and PVB film used to bond the glass portion 10 and the nanoceramic film 30 on the outside of the PC. Since 99% is similar to general UV blocking film (including nanoceramic film) (EVA film has low UV blocking rate), it is possible to use adhesive film such as PVB film having UV blocking function as shown in FIG. It is also possible to use a UV adhesive, and to remove the nano-ceramic film 30 on the outside of the PC as shown in FIG. 6 (FIG. 6 is the same as FIG. 4, the adhesive layer using the UV adhesive is not shown separately). However, the blocking rate of PVB film and UV adhesive is significantly lower than that of nanoceramic film in terms of the blocking rate of solar energy, which is another factor causing yellowing and whitening of PC in addition to ultraviolet rays, and thus, the structure of FIG. 4 (constitution using nanoceramic film) ) Is more preferable.

This patent solves the problems of securing visibility in the transparent bulletproof panel using polycarbonate, and solves the problems such as yellowing, whitening, and scratches, which are weak points of the polycarbonate. It also solved problems such as freezing, steaming, and rainy or muddy water in rainy weather, which can occur when installed on the vehicle glass, the outer windows of ships, submarines, buildings, etc.

Therefore, the present patent can be implemented in various forms such as bulletproof vehicle glass, outer window of a ship, submarine, building, etc., shield of speech stand, bulletproof equipment of military guard house such as GP, bulletproof equipment for VIP guard, and transparency. Regardless, it can be used as a variety of bulletproof equipment for indoor use.

In addition to bulletproof, it can be implemented in various types of security equipment, explosion-proof equipment, anti-terrorism equipment, and as of 2013, a number of products are already on the market and sold.

Claims

A front glass part 10 composed of at least one glass;

A nanoceramic film 30 on the outside of the polycarbonate 40;

Polycarbonate 40;

Bulletproof panel, characterized in that consisting of the nano-ceramic film 31 of the inside of the polycarbonate (40).
A front glass part 10 composed of at least one glass;

Polycarbonate 40;

A nanoceramic film 31 on the inside of the polycarbonate 40,

Bulletproof panel, characterized in that using the adhesive film or UV adhesive having a UV blocking function in order to bond the front glass portion 10 and the polycarbonate (40).
The method according to claim 1 or 2,

The nanoceramic film 31 is a bulletproof panel, characterized in that the anti-fog coating.
The method according to claim 1 or 2,

The nanoceramic film 31 is a bulletproof panel, characterized in that the scratch-resistant coating.
The method according to claim 1 or 2,

The bulletproof panel is bulletproof panel, characterized in that it comprises at least one heating layer (100).
The method according to claim 1 or 2,

The bulletproof panel is a bulletproof panel, characterized in that the outermost water-repellent coating.