| http://www.w3.org/ns/prov#value | - In another aspect, this invention is a method for making formed heat-resistant PLA articles, comprising heating a sheet of an amorphous, crystallizable PLA resin to a temperature at which the PLA resin forms crystallites and for a time sufficient to impart a crystallinity of at least 10 Joules/gram to the PLA resin, and then thermoforming the heated sheet on a mold that is at a temperature below 8
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