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Auto Bubbles
The Production Process For Laminated Auto Glass
Laminated glass is widely used in many practical applications these days. Thanks to its physical properties (its strength in particular), laminated glass is used in every automobile windshield for safety issues and to enhance the structural integrity of the vehicle. Furthermore, the use of laminated glass helps protect passengers in the event of an accident because this type of glass does not break into sharp pieces, which can potentially hurt people. The lamination also acts as a barrier, effectively preventing objects from penetrating the windshield and reaching the driver and passengers.
The first stage of producing laminated glass is cleaning the glass surface. To ensure the highest quality and ideal cleanliness of the surfaces, this process is usually fully automated. Any dust particles can not only compromise the structural strength of the glass, but could theoretically hamper the driver's vision.
After the glass is cleaned, it goes into the second stage of laminated glass manufacturing: the special laminating substrate is glued to the glass sheets, thus creating a triple-layered piece of laminated glass. During this process (which is usually done manually), workers take one sheet of glass, apply substrate on it, and then cover this first sheet of glass with another one. This process usually takes place in an environment where temperature and humidity are closely monitored.
Laminated glass for the automotive industry typically only uses two layers of glass and one middle layer of substrate. However, it is sometimes necessary to produce multi-layered laminated glass for other applications.
Among the substrates which are in common use today are multiple cellulose compounds. For example, polyvinyl butyral or PVB is a popular substrate used in modern laminated glass production. This substrate works like glue; when applied in between two sheets of glass, it glues them together, essentially making a sandwich. Along with PVB, ethylene vilyl acetate or EVA is also widely used as a substrate in the manufacturing of laminated glass. Sometimes, specialized chemical liquids can be used as substrates – such liquids are applied between sheets of glass and are then polymerized or hardened under the influence of UV light or other specific conditions.
After the substrate has been sandwiched between the two pieces of glass, the assembly is then heated and pressed together. Heating of the laminated glass usually takes place in a special oven, and afterwards the glass is roll-pressed to get rid of any trapped air bubbles. Sometimes it takes several passes of the roll-press in order to eliminate all the air bubbles.
At this stage of the production process, the product is laminated glass; however, it still has one more stage to undergo. After heating and pressing, laminated glass is sent to an autoclave. This device simultaneously heats and pressurises the laminate for a few hours, making it extremely stong and durable. If excess substrate is found along the edges of the glass, it is removed before shipping. After an autoclave, laminated glass windshields are shipped to car manufacturers around the world where they are finally installed into the vehicles.
Laminated glass is a major component in automobile safety. Because of it, countless lives are spared every year that otherwise might have been taken when auto accidents occur.
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Fixing rust bubbles on a vehicle?
I'm looking to buy a vehicle and most of the ones I've been interested in has them. To fix rust, is this a job that can be done yourself or could an auto garage place do it?
the problem with rust bubbles under the paint, this usually means it is all the way through, Its best to grind out every speck of rust, then immediately put on a rust preventative primer and fill in the holes with either bondo body filler, for small ones, for big rusted areas you can buy a fiberglass bondo, that is premixed in the bondo, just add hardener and sand, the fiberglass bondo in the hands of someone with talent, can be used to rebuild entire sections of a vehicle up to and including a complete fender skirt all around the tire, but working with it you should take some precautions when sanding wearing a mask and eye protection is a good idea with the fiberglass bondo. its best to grind out the rust when the areas are small, they start to get big in a hurry, and you would be amazed at how fast it can go as they get larger. It mainly is time consuming, so do a few, here and there and pretty soon they are all done.
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