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    • 7. 发明授权
    • Method of preparing biodegradable, water-resistant, and molded paper
board
    • 生物降解,防水,成型纸板的制备方法
    • US5906713A
    • 1999-05-25
    • US561781
    • 1995-11-22
    • Wen-Fuei YehLong-Huei WangYao-Tung LiuYing-Yu Cheng
    • Wen-Fuei YehLong-Huei WangYao-Tung LiuYing-Yu Cheng
    • D21F11/00D21H11/04D21H11/12D21H17/14D21H17/27D21H17/62D21H21/24D21H23/16D21H25/00
    • D21H21/24D21F11/00D21H17/14D21H23/16D21H11/04D21H11/12D21H17/27D21H17/62
    • A method of preparing biodegradable, water-resistant, moldable paper board or molded paper utensil which includes the steps of: (a) preparing a pulp aqueous slurry at a consistency of about 4%; (b) adding surfactant selected from the group consisting of rosin soap, sodium oleate, sodium stearate, and sodium palmitate to the pulp aqueous slurry; (c) adding between 25-75% weight of a biodegradable and water-resistant agent selected from the group consisting of calcium stearate, cellulose stearate, calcium palmitate and cellulose palmitate to the pulp aqueous slurry to form a slurry mixture; (d) refining the slurry mixture at a consistency of about 4% to a desired drainage; (e) diluting the refined slurry mixture and adding thereto an aggregating agent as alum to form a furnish; (f) forming the furnish to obtain a dry moldable soft paper board; (g) preheating the moldable paper board obtained in step (f) at a temperature from 110.degree. to 170.degree. C.; and (h) hot-pressing the preheated moldable paper board obtained in step (g) in a mold at a temperature from 115.degree. to 170.degree. C. for 2 to 40 seconds to obtain a molded paper utensil.
    • 一种制备可生物降解,防水,可成型的纸板或模制纸用具的方法,其包括以下步骤:(a)以约4%的稠度制备纸浆含水浆料; (b)向纸浆水浆中加入选自松香皂,油酸钠,硬脂酸钠和棕榈酸钠的表面活性剂; (c)向纸浆含水浆料中加入25-75%重量的选自硬脂酸钙,硬脂酸钙,棕榈酸钙和棕榈酸钙的生物降解性和防水剂,以形成浆料混合物; (d)以约4%的浓度将浆料混合物精炼成所需的排水; (e)稀释精制浆料混合物并加入聚集剂作为明矾以形成配料; (f)形成配料以获得干燥成型的软纸板; (g)在110℃至170℃的温度下预热步骤(f)中得到的可成型纸板; 和(h)将在步骤(g)中获得的预热的可成型纸板在115-170℃的温度下热压2至40秒,得到模制纸用具。