KR20080073183A - Manufacturing method of the bullet-proof glass composed of multi-layered film - Google Patents

Abstract

A manufacturing method of bullet-proof glass is provided to improve the bullet-proof performance economically by multi-laminating high clear polycarbonate material having strong impact resistance and high clear polyester film having excellent tensile strength. A manufacturing method of bullet-proof glass, which has multi-layered glass consisting of at least two pieces of glass such as flat glass and curved glass in order to keep the glass from the penetration of fragments from guns' warhead or strong explosive, comprises combining multi-layer film layers(90a,90b) consisting of high clear polycarbonate film layer of which thickness is at least 50-600mum and high clear polyester film layer of which thickness is at least 50-500mum on the polycarbonate film layer in the space between the normal glass parts(10a,10b,10c) and another normal glass part, and placing polyvinyl butyral film of which thickness is 380-1,500mum having excellent adhesiveness on the both faces(30a,30b,30c,30d) of the multi-layer film.

Description

Manufacture method of bulletproof glass composed of a multi-layer film {Manufacturing method of the bullet-proof glass composed of multi-layered film.}

1 is a perspective view of a conventional product bonded

Figure 2 is a perspective view formed of a multilayer film (Multi-layer) in accordance with the present invention

Figure 3 is a perspective view of the bonding consisting of a multi-layer film used in the present invention

The present invention relates to a bulletproof glass manufacturing means composed of a multi-layer film laminated to a glass portion between the glass and a glass between flat glass used in buildings or automobiles mainly used in buildings Multi-laminated glass is combined with two or more pieces of glass, which can significantly reduce the weight of the glass and the weight per unit volume than the conventional bulletproof glass, and the impact due to strong impact resistance and excellent tensile strength The impact energy absorption strength and penetration resistance are strong, and the excellent laminated adhesive strength allows the transparency of bulletproof glass and visible light transmittance to be selected to obtain a bulletproof glass that can be selected to maximize the efficiency of raw materials and cost savings. Highly transparent polycarbonate material and highly transparent poly developed as a product that can increase economic value It relates to a high-performance device, bullet-proof glass which is composed of a multilayer film of the master material.

In general, glass is an absolute pronoun for everyday life, including all architects.

However, it protects people and property from natural disasters such as earthquakes, tsunamis, typhoons, or artificial explosives, fragments and fires, artificial throwing using tools, and glass fragments and scattering from external intrusions. In order to do this, use a certain thick plain glass, or a safety glass bonded to two or more pieces of tempered glass or glass, or attach a PET film for preventing glass scattering or a security film to delay intrusion on the inner surface of the glass. do.

But from firearms (pistols and rifles) and explosives (grenades, cremoses), firearms, or more powerful weapons of killer weapons, the conventional methods described above can save valuable lives and property. Since it is very impossible to protect, it is necessary to adopt a thicker glass corresponding to it, which means that the glass itself has a limitation in weight load and installability. to be.

In general, the purpose of using bulletproof glass is to allow time to escape after the first hit, but there is no concept of permanent bulletproof glass.

Therefore, the conditions for maximizing the performance of the bulletproof glass performance are high elasticity, high toughness, shock wave propagation speed and elongation, and the maximum control of failure mode and shock energy absorption transmission for each fault.

It is frequently installed and used in places where the use of the national defense industry, safety of specific public institutions and public enterprises is the highest priority, or specific buildings and units, ports, airports, etc., for the purpose of special protection. Therefore, bulletproof glass is designed to have different thickness of bulletproof glass depending on the type of weapons, such as firearms, strong firearms and explosives, and performance specifications.

Therefore, the conventional bulletproof glass bonding method is limited in mechanical and physical properties of the adhesive material, the impact resistance and tensile strength due to simple bonding is weak, and when the glass is bonded by the bulletproof function, the overall glass thickness is only very thick, It is a big disadvantage because only the overload load is large, and the complex cost incurring rate is very high, so it is not economical because the energy loss is large.

In addition, in order to ensure the safety of life and property from more firearms or firearms, the conventional bulletproof glass thickness must be made in a thicker shape, so the weight of the glass is soaring and the cost loss is large. .

This requires a very complex design, in which the additional raw materials that can withstand the glass load are wasted at high cost due to the volume and load due to the thickness of the bulletproof glass itself, resulting in cost increase and compound cost in the process. Since the factors are inevitable, energy losses will soon lead to economic losses.

Therefore, the present invention is a condition for maximizing the performance of the bulletproof glass in a multi-layered laminated polylayer of a high-transparent polycarbonate material having a strong impact resistance of mechanical properties and excellent tensile strength of the firearms By absorbing the kinetic energy of fragments generated from bullets or explosives to stop the movement, the ballistics performance is much better than the laminated safety glass used as a conventional bulletproof glass and the efficiency of the bulletproof glass performance of the present invention is improved. In order to maximize the economic efficiency, research was conducted to drastically reduce material and compound costs from production to installation and use. In order to increase the economic efficiency, the bulletproof glass thickness of the present invention, as well as the load on the volume is greatly reduced, it is more resistant to impact, and the excellent tensile strength maximizes the impact energy absorption and transmission, which are essential for penetration resistance, and physical and chemical By adopting a special adhesive without the deformation of physical properties, it provides flexibility and achieves economic value through cost reduction and complex cost reduction.

In order to achieve the above object, in the present invention, in order to improve the performance of the bulletproof glass and to significantly enhance the efficiency of the high transparency of the thermoplastic elastomer is formed in a thickness of 50 ~ 600㎛ laminated in multiple layers in the space between the glass and the glass Laminate layer composed of polycarbonate material and multi-layer film using high transparency polyester material formed at 50 ~ 500㎛ thickness, high transparency polycarbonate and high transparency polyester film (Polyester) film Formed as an adhesive laminate layer of PVB film (Polyvinyl butyral Film), a thermoplastic vinyl-based plastic with excellent transparency and adhesiveness of 340 ~ 1,100㎛ thickness laminated on both sides (30a, 30b, 30c, 30d) Also, it is a thermosetting resin having a thickness of 300 to 700 μm, which is free from oxidation and yellowing and does not degrade mechanical and chemical properties. Transparent polyester, including those formed by the laminate layer of the polyurethane adhesive layer to the binder on the part between the glass and the glass so that the space was formed in a state of compressed air into the superior bulletproof glass by a predetermined heat and pressure.

The first thing to be considered in bulletproof glass as in the present invention is to stop the movement by absorbing the kinetic energy, such as bullets and fragments of the weapons used.

Considering this concept, the bulletproof glass according to the present invention is the same as FIG. 2 and FIG. The detailed description will be described later.

First, the conventional bonding structure of bulletproof glass will be described. As shown in FIG. 1, there are glass portions 10a, 10b, and 10c formed of flat glass or curved glass, and the space between the center glass and the glass is generally conventional. There was a method of manufacturing a laminated safety glass through a process by thermal bonding by binding only the PVB film (Polyvinyl butyral Film), which is a thermoplastic plastic applied in the manner of. As is well known, the glass thickness of the glass parts 10a, 10b, and 10c may be made of the same glass thickness when the glass thickness of 5 mm to 12 mm is used and two or more sheets of glass are laminated in multiple layers. In addition, it may be formed of laminated glass to vary the thickness of each glass part in consideration of the penetration resistance according to the type and performance of the total air flow and explosive weapons used, PVB film (20a, 20b) in the multilayer manufacturing Generally, PVB film with thickness of 0,35mm up to 1,20mm is bonded and made of safety glass or bulletproof glass.

However, this conventional method is weak to the post-treatment problem of the adhesive material and the impact resistance of the mechanical properties, which are the precautions of bulletproof glass, and the tensile strength is weak, so that only the thickness of the glass is thickened, thereby increasing the heavy load on the glass volume. The loss is very large and it is not economical.

In addition, laminated safety glass and bulletproof glass formed by employing a special Penetration Film in the space between the glass to improve the bulletproof performance of the conventional bulletproof glass also have low profitability due to expensive raw material cost. It is not efficient because it does not satisfy the load problem due to glass thickness and weight, which should be considered first.

Figure 2 is a block diagram according to the bonding belonging to the bulletproof glass manufacturing method excellent in bulletproof performance according to the present invention.

Multi-layer film layers 90a and 90b made of a high-transparent polycarbonate material and a high-transparent polyester material, which are thermoplastic elastomers formed in the space between the glass parts 10a, 10b, and 10c and the glass part center. Laminated and laminated to be laminated, laminated layers are formed so that the adhesive layer (30a, 30b, 30c, 30d) is formed on both sides of the multi-layer film layer excellent transparency and strong adhesiveness of 350 ~ 1,100㎛ Bonding and forming a PVB film and including the glass (10a, 10b, 10c) portion, the multi-layer film laminate layer (90a, 90b), and the adhesive layer in the compressed state of the air in a state of compressing the flat (flat) Or it is shape | molded by the bulletproof glass of the outstanding performance of the curved shape.

The adhesive layers 30a, 30b, 30c, and 30d that are laminated on both surfaces of the glass and the space between the glass and the multilayer film layers 90a and 90b are bound to the glass space are necessarily PVB (polyvinyl butyral) films. Not only possible but also considering the impact resistance according to the type and performance specifications of weapons such as firearms and explosives Transparent and adhesive polyurethane adhesive layer which is thermosetting resin and polypropylene which is olefin plastic It is also produced as an adhesive layer.

In addition, the glass thickness of the glass (10a, 10b, 10c) of the glass when the two or more sheets of glass laminated in multiple layers can be all made the same, the bulletproof glass of the present invention according to the type and performance of the weapon, including firearms In order to have excellent ballistic performance, the thickness of the glass part can be designed and manufactured differently, and when the glass is adopted, the glass thickness is applied to 3mm ~ 15mm,

The high-performance bulletproof glass according to the present invention is molded into a flat bulletproof glass for flat glass, which is mainly used in buildings, up to 85 mm, and curved bulletproof glass used for automobiles, up to 52 mm.

As shown in FIG. 3, the laminated layer of the multilayer film 90 formed by being laminated in multiple layers is specifically made of a highly transparent polycarbonate 40a and 40b which is a thermoplastic resin formed at a thickness of 50 to 600 μm. It is formed of a laminate layer of highly transparent polyester film (50a, 50b) formed at 50 ~ 500㎛. It is a (40a) (40b) layer laminated with a highly transparent polycarbonate layer, the (40b) layer and the highly transparent PET film layer (50a), and the adhesive layer (60a, 60b) of the (50a) and (50b) layers of the PET film layer (60c) is polyvinyl acetate, polyvinyl alcohol, saturated polyester type, acryl type, which does not have yellowing by ultraviolet rays, does not cause oxidation yellowing by nitrogen oxides in the air, and does not degrade thermal discoloration and mechanical properties due to temperature rise. It is formed by lamination employing a special adhesive such as. It may also be formed of a laminate of thermoplastic hot melt (Hot-Melt) adhesive method of high density polyethylene (PE), vinyl acetate copolymer. Therefore, it has the additional advantage of giving flexibility to the multi-layer film.

Since the composition of the laminate (Lamination) is made in a continuous manner it is excellent in transparency and adhesive strength and can be expected to greatly improve the quality of the product of the present invention.

The first consideration in the performance of the bulletproof glass, as shown in Figure 3 is to stop the movement by absorbing the kinetic energy, such as bullets or fragments of the weapon used by using a strong impact resistance and excellent tensile strength. Therefore, the bulletproof glass of the present invention can be designed in a variety of configurations of the multilayer film 90 layer to be laminated between the glass and the glass. This is because the high-transparent polycarbonate (40a, 40b) film layer and the high-transparent polyester film (50a, 50b) layer, which are composed of multiple layers, set the ballistic resistance capability according to the type and performance specifications of weapons such as firearms, firearms and explosives. Highly transparent polycarbonate film (40a, 40b) thickness of 50㎛ ~ 600㎛ and high transparent polyester film (50a, 50b) thickness of 50 ~ 500㎛ depending on impact, tensile strength, penetration resistance and durability When two or more pieces of glass are laminated together, the thickness of the high transparency polycarbonate layer (40a) and (40b) can be equally applied. In consideration of this, the thicknesses of the layers 40a and 40b are differently arranged. In addition, the (50a) layer and the (50b) layer, which is a highly transparent polyester film layer, may also be designed and manufactured with the same or different thicknesses.

In addition, the bulletproof glass of the present invention is laminated on the intermediate layer of the glass and the glass, the adhesive layer (30a, 30b, 30c, 30d) formed by binding is not necessarily only PVB film (Polyvinyl butyral), but mechanical properties In order to enhance the resistance to impact resistance, a thermosetting resin (PU) adhesive layer, which is a thermosetting resin, and a polypropylene adhesive layer are also formed by binding and molding.

The bulletproof glass of the present invention is designed to control the visible light transmittance up to 50% from the transparent bulletproof glass that maintains the maximum transparency to block the solar radiation heat is added to the functionality that saves energy due to the reduction of heating and cooling costs in the room It is made of bulletproof glass.

As described above, the bulletproof glass having excellent performance according to the present invention is composed of a multi-layer film 90 that is laminated in multiple layers between the glass and the glass, and impacts with strong impact resistance and excellent tensile strength, which are mechanical properties. As absorbing power is enhanced and processed into high-performance bulletproof glass with excellent penetration resistance, it significantly reduces the thickness of the bulletproof glass and the weight per unit volume, leading to the maximum bulletproof efficiency as bulletproof glass.

Therefore, the bulletproof glass according to the present invention is made of excellent bulletproof glass up to flat glass bulletproof glass mainly applied to buildings and curved bulletproof glass mainly applied to automobiles, thereby solving the problems of conventional bulletproof glass. Performance and quality improvement, cost reduction, productivity improvement, etc. can be obtained, and the excellent bulletproof glass that can be obtained by the side effect by increasing the efficiency of economic value.

Claims (5)

Bulletproof that combines two or more pieces of flat glass and curved glass in multiple layers to prevent fragmentation of warheads of firearms (rotary or automatic pistols and rifles) and strong explosives (grenades, cremos, etc.) It relates to a glass manufacturing means; Highly transparent polycarbonate film layer formed of at least 50 ~ 600㎛ thickness laminated in multiple layers in the space between the glass (10a, 10b, 10c) portion and the glass portion, and the polycarbonate film layer (40a, 40b) And a lamination film 90 composed of a multi-layer film composed of a high-transparent polyester film layer each having a thickness of at least 50 to 500 μm to be laminated, and the multi-layer film Multi-layers characterized in that each of the two layers (30a, 30b, 30c, 30d) to form a binder of PVB film (Polyvinyl butyral Film) of at least 380 ~ 1,500㎛ thickness of excellent transparency and strong adhesiveness, respectively Bulletproof glass manufacturing method consisting of a multi-layer) film. The high-transparent polycarbonate film layer (40a) and (40b) layer of the multilayer film (90) layer is thick on at least one side to increase the ability to resist impact from firearms or debris. Bulletproof glass manufacturing method consisting of a multi-layer film, characterized in that to form a laminate layer differently. According to claim 1, The high-transparent polyester film layer (50a, 50b) of the multi-layer film is to increase the kinetic energy absorption ability from bullets or fragments using excellent tensile strength according to the type and performance of weapons, such as firearms, explosives, etc. Ballistic glass manufacturing method consisting of a multi-layer film, characterized in that for forming at least one side for different thickness. The double-sided layer (30a, 30b, 30c, 30d) of the multi-layer film layer (90a, 90b), the impact absorption energy for the penetration resistance from the debris of the weapons, such as firearms or explosives, greatly increases Method for producing bulletproof glass composed of a multi-layer film, characterized in that the binder is formed of a polypropylene hot-melt adhesive layer of at least 380 ~ 780㎛ thickness having excellent transparency and strong adhesion . The method of claim 4, wherein the double-sided layer (30a, 30b, 30c, 30d), It is characterized in that each binder is formed of a polyurethane hot-melt adhesive layer having a thickness of 350 to 500 μm that is excellent in transparency and strong in order to increase absorption of kinetic energy from bullets or fragments. Bulletproof glass manufacturing method consisting of a multi-layer film.

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