Glass reshaping

Hasegawa A 1983 Amplification and reshaping of optical solitons in glass fibre-IV Appl. Phys. Lett. 8 650-2... 

At the gob feeder, the forming operation begias. The gob feeder deUvers a glass gob shaped such that it enters the blank mold without excessive mold contact, distortion, or reshaping of the glass. Shears cut off a gob of glass. The gob is fed to either a blow and blow, press and blow, or press-only forming operation to produce a container. 

Like glass recycling, the process of recycling aluminum is fairly simple. Previously used aluminum packaging is shredded into small solid pieces, which are then melted inside a furnace to produce a thick liquid. At this point, the molten aluminum is identical to raw aluminum being processed for the first time. It is reshaped and reprocessed to create new products and packaging. 

Use once, melt, and reshape to original use (recycled aluminum cans or single-use glass bottles). 

In the first chemical category, the primary shape is covalently fixed, hence once processed these materials are not so easy to reshape. The glass transition temperature... 

Glass can be reshaped. This is generally true and is the reason why glass is so recyclable. Some glasses are designed so that they can be modified by light, by diffusion, by irradiation, etc. 

Not included in Figure 4.2 are thermoset plastics that are extensively used as glass-fiber- or carbon-fiber-filled materials in building and transportation. For instance, watercraft or aircraft structures and in wind turbine blades in the energy sector are fabricated out of lightweight composites or thermoset plastics filled with reinforcing fillers. Thermoset plastics cannot be melted and reshaped into... 

The effects of styrene become dominant in the high styrene region where the modulus and yield stress are seen to increase. Copolsrmers with Tg above ambient temperature are amorphous glasses, and these copolsrmers are reported (57) as exhibiting interesting shape/reshape functionality. 

Bent Glass, flat glass (q.v.) which has been reshaped when hot. 

Since the ends of the polyisoprene chains are covalently bonded into the polystyrene glass, they cannot move away, and the glassy polystyrene phase effectively cross-links the rubber polyisoprene chains. However, at temperatures above the glass transition of polystyrene, the chains can be pulled out of the polystyrene domains, and so the article can be reshaped, becoming cross-linked once again on cooling. 

Automotive glazing (flat glass and reshaped glass)... 

The book focuses mainly on subtractive methods, i.e. the removal of material, and on thermal reshaping methods as well as techniques that allow for the manipulation of locally confined properties. We do not discuss ion or electron beam structuring, because of their limited application in industry nor do we discuss additive methods such as the deposition of powders or coatings. Silicate glasses form the centre of discussion of the book. We also exclude special microoptics and photonics made from glasses because excellent specialist books are already available, and the reader is referred to them the processing associated with their manufacture is, however, described in different sections of the book. 

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