GAG stands for G-PET / A-PET / G-PET — a three-layer coextrusion film where all three layers consist of virgin material. GRG stands for G-PET / R-PET / G-PET — here the core is replaced by up to 80 % recycled PET. We source both film types from our partner Krumbeck, a specialised manufacturer for coextruded PET films. What makes them special: the outer G-PET layers (glycol-modified PET) permanently fuse together under high-frequency energy.
How HF welding works: Under a high-frequency electromagnetic field, the G-PET outer layers of the top and bottom parts soften and permanently fuse together. The blister packaging is hermetically sealed — opening is only possible by destroying the packaging. This is exactly what makes GAG and GRG the material of choice when maximum anti-theft protection is required in retail.
Why GAG instead of pure G-PET? G-PET as a full material would be significantly more expensive. GAG coextrusion solves this problem: only the thin outer layers (~10 %) consist of G-PET — enough for HF welding. The ~80 % A-PET in the core delivers the mechanical stability at significantly lower cost. And due to the low G-PET content, the material remains recyclable: used packaging is processed into new film, from which new products are created — a closed-loop recycling system.
Application areas: GAG and GRG are used wherever anti-theft protection needs to be combined with product presentation at the point of sale — hardware stores (tools, bits, pliers), electronic accessories (headphones, charging cables), toys, household goods and general consumer goods packaging. Manufactured in Sundern in the Sauerland region, Made in Germany.
