Polyester fibres (Polar Fleece), thermoformed sheet, strapping, soft drink bottles, tote bags, furniture, carpet, paneling and (occasionally) new containers. Since its introduction, the RIC has often been used as a signifier of recyclability, but the presence of a code on a plastic product does not necessarily indicate that it is recyclable any more than its absence means the plastic object is necessarily unrecyclable. In 2013 this standard was revised to change the graphic marking symbol of the RIC from the "chasing arrows" of the Recycling Symbol to a solid triangle instead. In 2008, ASTM International took over the administration of the RIC system and eventually issued ASTM D7611-Standard Practice for Coding Plastic Manufactured Articles for Resin Identification. Subsequent revisions to the RIC have replaced the arrows with a solid triangle, in order to address consumer confusion about the meaning of the RIC, and the fact that the presence of a RIC symbol on an item does not necessarily indicate that it is recyclable. When a number is omitted, the arrows arranged in a triangle resemble the universal recycling symbol, a generic indicator of recyclability. The numbers also indicate general ease (and thus, cost-effectiveness) of recycling, with 1 being the easiest and 6 and 7 being very difficult. 7:(OTHER)/(PLA) other plastics, such as acrylic, nylon, polycarbonate and polylactic acid.6: polystyrene (PS) (plastic utensils, Styrofoam, cafeteria trays, etc.).5: polypropylene (PP) (auto parts, industrial fibres, food containers, etc.).
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