Reinforced safety glass and method of manufacture
AssigneesAlberto Oscar Fontela, David Nahuel Pitarch
InventorAlberto Oscar Fontela
Life of this patent
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Abstract
A reinforced safety glass and its manufacturing procedure are presented. The invention uses a vehicle's original glass, which is generally tempered, eliminating need for a new specific glass. The invention utilizes films of diverse reinforcing materials to increase the final resistance of the product and therefore reinforcing the original glass. During its manufacturing process, an autoclave is used for applying pressure and temperature to bond the reinforcing films to the original glass and between each other. The invention comprises the original glass to which at least one PU film and one C-PET film are orderly applied, ate least to the interior face of the glass.
Claims16
A reinforced safety glass comprising:
- a tempered glass with an interior and exterior surface;
- a first layer of at least one PolyUrethane (PU) film bonded to said interior surface;
- a first layer of at least one Crystallizable PolyEthylene Terephthalate (“C-PET”) film bonded to said first layer of PU film;
- a second layer of at least one PU film bonded to said exterior surface;
- and
- a second layer of at least one C-PET film bonded to said second layer of PU film.
A process of manufacturing a reinforced safety glass comprising:
- a) obtaining and thoroughly cleaning an original glass, wherein the original glass comprises an interior surface and an exterior surface;
- b) ionize at least one PU film with ionizing gun;
- c) place the at least one ionized PU film on the interior surface of the original glass;
- d) ionize at least one C-PET film with ionizing gun;
- e) place the at least one ionized C-PET film over the at least one ionized PU film;
- f) eliminate any excess PU and C-PET films;
- g) place a layer of polycarbonate over the last C-PET film, wherein the polycarbonate has a thickness of between 1.5 and 4 mm;
- h) place the obtained product from steps a) to g) inside a vacuum bag;
- i) vacuum the obtained product;
- j) introduce the vacuum bag inside an autoclave until the autoclave reaches a pressure of between 2 and 4 bar and a temperature of between 75° C. and 90° C.;
- k) once autoclave reaches the temperature and pressure values indicated in step j) keep the values constant for 40 minutes to 60 minutes;
- l) activate the cooling system of the autoclave until it reaches 70° C.;
- m) eliminate cooling air from the autoclave and open it;
- n) remove the obtained product from inside the vacuum bag and the autoclave;
- o) remove the polycarbonate cover;
- p) place the obtained product inside the autoclave again;
- q) activate the compressor and reach a pressure of between 1.5 and 3 bar;
- r) activate the autoclave until it reaches a temperature of between 120 and 135° C. and a pressure of between 10 bar and 12 bar;
- s) once the autoclave reaches the values indicated in step r) deactivate the compressor and the autoclave until the temperature reduces below 120° C.;
- t) activate the cooling system of the autoclave until it reaches 70° C.;
- u) eliminate cooling air in the autoclave and open it;
- v) take the obtained product out of the autoclave;
- w) let the obtained product reach room temperature;
- and
- x) polish any excedents of the films out of the obtained product, wherein the obtained product is the safety glass.
A process of manufacturing a reinforced safety glass comprising:
- a) obtaining and thoroughly cleaning an original glass, wherein the original glass comprises an interior surface and an exterior surface;
- b) ionize at least one PU film with ionizing gun;
- c) place the at least one ionized PU film on the interior surface of the original glass;
- d) ionize at least one C-PET film with ionizing gun;
- e) place the at least one ionized C-PET film over the at least one ionized PU film;
- f) repeat steps b) to e) applying ionized PU and C-PET films to the exterior face of the original glass;
- g) eliminate any excedents of PU and C-PET films from the interior and exterior surfaces of the original glass;
- h) place a polycarbonate cover over the last C-PET film on both the exterior and the interior surfaces of the original glass;
- i) place the obtained product formed in steps a) to h) inside a vacuum bag;
- j) vacuum the obtained product;
- k) introduce the vacuum bag inside an autoclave until it reaches a pressure of between 2 bar and 4 bar and a temperature of between 75° C. and 90° C.;
- l) once autoclave has reached the temperature and pressure values indicated in step k) keep values constant for 40 minutes to 60 minutes;
- m) activate the cooling system of the autoclave until it reaches 70° C.;
- n) eliminate cooling air from the autoclave and open it;
- o) remove the obtained product from inside the vacuum bag and the autoclave;
- p) remove the polycarbonate covers;
- q) place the obtained product inside the autoclave again;
- r) activate the compressor and reach a pressure of between 1.5 and 3 bar;
- s) activate the autoclave until it reaches a temperature of between 120 and 135° C. and a pressure of between 10 bar and 12 bar;
- t) once the autoclave reaches the pressure and temperature values indicated in step s), deactivate the compressor and the autoclave until the temperature reduces below 120° C.;
- u) activate the cooling system of the autoclave until it reaches 70° C.;
- v) eliminate cooling air in the autoclave and open it;
- w) take the obtained product out of the autoclave;
- x) let the obtained product cool down to room temperature;
- and
- y) polish any excedents of the films of the obtained product, wherein the obtained product is the safety glass.
Dependencies are inferred from the claim text.