Avery Dennison Ecotach Avery Dennison Ecotach Biodegradable (bio-PP) Fasteners have a paddle/T-End for secure attachment. These 25mm ticket attachments are ideal for retail environments. Designed for use with Tagging Guns, the attachments are supplied in packs of 10000. The bio-PP Fastener is made out of a proprietary blend of polypropylene material specifically designed to biodegrade in less than a year when it is on soil, without leaving behind any harmful substances. The technology used results in no microplastics so that when a fastener degrades all that is left is carbon dioxide, water and microbes (biomass).