Glass for molds
High-resistance glass for molds
Corning’s QE glass blanks for molds feature a high-performance glass composition, specially designed for plastic lens manufacturers who expect both geometric precision and high durability.
QE glass is reliable, quality consistent ,and suited to all types of lenses, plastic materials, and curing processes. Its exceptional mechanical properties (strong compression and penetration depth for enhanced breakage and scratch resistance), and chemical properties (resistance to water, acid, and alkali) ensure mold integrity for hundreds of casting-cleaning loops.
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* measured after chemical tempering, using the following parameters :
16 hours at 450°C, KNO3 bath
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