Title: Process of preparing degradable packing material with starch as main material
Application Number: 200610045514 Application Date: 2006.07.19
Publication Number: 1887944 Publication Date: 2007.01.03
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C08L3/02;C08K5/10;C08L23/06;C08L23/12
Applicant(s) Name: Shandong Haolong Group Corp., Ltd. Address:
Inventor(s) Name: Zhao Wenxue;Bi Yushan;Li Zilong
Attorney & Agent: chen lingxun
Abstract:
    The present invention relates to the preparation process of one kind of degradable packing material with starch as main material. The preparation process includes the following steps: 1. mixing starch, polyethylene or polypropylene, glyceryl stearate and glycerin in certain weight proportion at 80-120 deg.c in a mixer for 3-5 min; 2. adding ethylene glycol or propylene glycol, vegetable oil, sodium hydroxide or potassium hydroxide and long chain alkyl maleic anhydride in certain weight proportion to the mixer at 100-120 and mixing for further 10-15 min; and 3. cooling the mixed material, extruding the mixture in a screw extruder at 100-150 into sheet, and stretching at 50-70 to obtain the packing material. The packing material is heat resistant, water resistant, oil resistant, flexible and degradable.
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