PLA Environmentally Degradable Plastic

Patent Name PLA Environmentally Fully Degradable Plastics Patent Applicant Shang Zhichang Principal Applicant Address 313306 Zhejiang Province Anji County Meixi Town Xiang Dance Residence Inventor Shang Zhichang Application (Patent) No. 200510049546.7 Application Date 2005.04.04 Award Date Approval Notice No. 1687205 Auditing Announcement Date 2005.10.26 Instruction CD-ROM D0543 Main Classification No. C08L3/02 Classification No. C08L3/02 Sub-item Original Application No. PRIORITY AGREEMENT Abstract The present invention discloses a PLA environmental-friendly fully degradable plastic and a production method thereof. The plastic uses Lactobacillus fermented corn starch, made of high content of L-lactic acid and PVA, epoxy soybean oil mixed at high speed to make polylactic acid, and then add plasticizer and other additives through high-speed mixing, granulation and drying to make PLA Degradable plastics. Can be widely used in food packaging, daily necessities, agricultural products protection and other fields. The product is non-toxic, harmless, and fully degraded. The product is transparent, soft, high mechanical strength, moisture, corrosion, gas barrier. Sovereignty item 1, a PLA-environmentally degradable plastic and its production method, characterized in that corn starch and lactic acid are used as main raw materials, and epoxy soybean oil is added; PVA is mixed with high-speed and high-temperature temperature to make polylactic acid; plasticizer is added and lubricant is added; The agent, UV absorber, and fluorescent whitening agent are made of polylactic acid plastic, and the weight ratio thereof is: corn starch 6.0-6.4% lactic acid 2.0-2.6% PVA 12-14% epoxidized soybean oil 0.3-0.6% plasticizer 0.2 -0.4% Lubricant 0.22-0.28% UV Absorber 0.04-0.08% Fluorescent Brightener 0.04-0.06% Water 100%