废模塑餐具再生纸浆技术的研究

Study on Repulping of Waste Molded Container

对废模塑餐具再生纸浆进行了研究。结果表明,最佳的碎浆工艺条件为:预处理温度95℃;预处理时间60min(P型碎解剂)或90min(H型碎解剂);碎浆浓度16%;碎解时间30min;初始pH值为11±05;P型碎解剂用量为15%或H型碎解剂用量为30%。碎解剂的应用可有效降低筛渣率和缩短碎浆时间。再生浆料的纤维长度及物理性能与原浆相近。

Repulping processes for waste molded container are compared.It is discovered that quality repulped stock can be obtained with less rejests at optimum conditi ons.It is more effective to use repulping agents during repulping in order to r educe reject and pulping time.The repulped stock is quite similar to the virgin pulp in weighted fiber length,weighted fiber distribution,tensile strength,t ear resistance and folding endurance.