Biodegradable resin tailored for blown film. (Keeping up with Materials).An easy-to-process biodegradable biodegradable /bio·de·grad·a·ble/ (-de-grad´ah-b'l) susceptible of degradation by biological processes, as by bacterial or other enzymatic action. bi·o·de·grad·a·ble adj. copolyester aimed at blown film extrusion has been introduced by Eastman Specialty Plastics, Kingsport, Tenn. Eastar Bio Ultra is a high-viscosity version of Eastman's Eastar Bio GP grade, which is mainly for extrusion coating and fibers. The new grade offers potential for higher throughput and improved bubble stability in films. Eastman says it processes much like LDPE LDPE abbr. low-density polyethylene . Target applications for Ultra copolyester are lawn and leaf bags, food packaging, and agricultural mulch mulch, any material, usually organic, that is spread on the ground to protect the soil and the roots of plants from the effects of soil crusting, erosion, or freezing; it is also used to retard the growth of weeds. and greenhouse films. The new material is said to exhibit excellent tear and puncture puncture /punc·ture/ (-cher) the act of piercing or penetrating with a pointed object or instrument; a wound so made. cisternal puncture resistance at low temperature, plus good moisture resistance. The copolyester degrades in a composting environment within 180 days. Tel: (800) 327-8626, www.eastman.com |
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