Adhesive makers aren’t sticking with GLYMO

Abstract

Laminated plastic pouches have proliferated in grocery store aisles thanks to their durability and light weight. The pouches are made of multiple polymer layers engineered to protect foods against light, gases, and microbes. But one component of the adhesives used to stick those layers together—[3-(2,3-epoxypropoxy)propyl]trimethoxysilane, an epoxy silane commonly called GLYMO—should no longer be used because of its potential to alter genes or gene expression, according to FEICA, the European adhesive association. For several years, European Union plastic regulations have limited GLYMO’s use in food applications. In July, FEICA recommended adhesive firms replace it altogether by the end of 2020 because of the possible genotoxicity. In its notice, the trade group asked members not to circulate the advice widely to avoid alarming consumers. Already, however, two leading adhesive manufacturers are highlighting that they offer laminating adhesives that do not contain GLYMO or similar epoxy silanes. Bostik, th...