Glass to Heat-Set PET Conversion Accelerates Across Categories
Beverage and sauce manufacturers are increasingly converting from traditional glass hot-fill containers to heat-set PET bottles, which offer lighter weight, shatter resistance, and lower transportation costs compared with legacy glass formats. This shift has accelerated meaningfully as resin engineering has improved heat tolerance at filling temperatures above 85 degrees Celsius, closing the performance gap that previously favored glass for sauces and condiments. Converters that have invested in heat-set resin formulation capability are winning bottle contracts ahead of competitors still offering standard PET across most tracked beverage and food manufacturing accounts this cycle. Adjacent demand is captured in the void fill packaging systems market, which MMA expects to grow from USD 0.7 billion in 2025 to USD 1.78 billion by 2036.
Market Impact: Sustains 6% beverage bottle volume growth








