The company supplies biodegradable plastics that meet the standards for the biodegradability and composting of plastic products (EU 1342 / EN standard), as well as plastics from renewable raw materials (bio-based plastics, even if they are not biodegradable).
Biodegradability means the degradation of plastic (under either aerobic or anaerobic conditions) in carbon dioxide, water, mineral salts and biomass or by exposure to microorganisms such as bacteria, fungi and seaweed. According to standard ES 1342 / EN, 14995 US ASTM, D64000, a material is considered to be biodegradable if it degrades by at least 90% within 6 months (180 days).
Vilkritis can offer its customers all the types of bio-plastics listed in the table. After receiving a technical assignment from the customer and assessing the requirements of the individual project and the desired characteristics of the final product, the laboratory carries out tests and provides recommendations regarding the amount of colour concentrate, the temperature of the production process, and other parameters.
The family of bioplastics includes PLA, PHA, TPS, and PBS (four biodegradable acids). Especially promising is PLA, or polylactic acid, which is a biodegradable, organic material polymerised from plants such as potatoes or corn. Transparency and versatility are the biggest strengths of PLA. It is extremely thin, flexible, moisture resistant and can be used as a conventional plastic for rotary moulding, film blowing, blow moulding, extrusion (of sheets or profiles), injection, film moulding, foam sheets and films, thermoforming, and fibre strip production.