Crystal Styrene Disposable Plastic Glasses will shatter and are not a practical option for use at outdoor sporting events. As these glasses shatter litter picking will quickly become an even more tedious operation if every glass has broken up into 100 pieces.
These glasses look like glass and are completely clear. Crystal Styrene glasses are best served at indoor events and more sophisticated surroundings where reusable glasses are not an option but disposables are required. Crystal Styrene glasses are commonly used in executive boxes at sporting grounds, wedding receptions and such.
Thermoforming is similar to vacuum forming, basically a sheet of plastic stretched over a mould. There are very little differences between thermoformed Crystal Styrene plastic glasses and injection moulded Crystal Styrene glasses, the telling sign that a product has been injection moulded are the ejector pin marks on the base (a small piece of plastic which appears like a dot)
More complicated shaped products can be achieved Injection moulding such as Plastic Champagne Flutes. Thermoformed Crystal Styrene glasses do not bring the problems associated with vacuum formed Polypropylene glasses (‘wobbly glasses’) as the Crystal Styrene material is more rigid.