Injection molded article, production method thereof and pellets used for injection molded article
AssigneeMitsubishi Plastics, Inc.
InventorsMiki Nishida, Kazuya Tanaka, Jun Takagi
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Abstract
To provide injection molded articles that are formed from plant-derived materials as main components and have heat resistance and high crystallization rates. The injection molded article of the present invention includes a resin composition containing: (A) a lactic acid based resin; and (B) a natural fiber that contains 40 mass % to 60 mass % of cellulose, 10 mass % to 30 mass % of lignin, wherein the resin composition contains the lactic acid based resin (A) and the natural fiber (B) in a mass ratio of 99:1 to 70:30, and the lactic acid based resin (A) has a resin composition ratio of L-lactic acid:D-lactic acid=100:0 to 97:3, or L-lactic acid:D-lactic acid=0:100 to 3:97.
Claims5
A method for producing injection molded article, comprising the steps of:
- forming pellets of a coated substance after impregnating a natural fiber (B) in a lactic acid based resin (A) by drawing;
- adding a further portion of the lactic acid based resin (A) to the pellets of the coated substance and kneading the resultant mixture to form pellets;
- and
- forming an injection molded article from the pellets obtained after the kneading.
Dependencies are inferred from the claim text.