농업용 폐 필름을 이용한 성형품의 제조방법

Manufacturing method of plastic goods using waste agricultural film

Abstract

PURPOSE: A method of manufacturing molded products using agricultural waste film is provided to reuse agricultural waste film without disposing contaminant, thereby protecting the environment and simplifying a manufacturing process. CONSTITUTION: A method of manufacturing molded products using agricultural waste film comprises following steps. An agricultural film is dried in order to have a moisture content of less than 5 weight %. The dried agricultural film is crushed. A mixture is manufactured by dry-mixing 100 parts by weight of the crushed agricultural film, 2-5 parts by weight of dispersing agent preventing the coherence of soil, 10-20 parts by weight of a binder in which reactive surfactant is added in acrylic resin in order to combine polyethylene resin included in the agricultural film and soil and 30-60 parts by weight of sericite as a filler. The dry-mixed mixture as an extrusion improving agent and 10-30 parts by weight of polyethylene terephthalate resin are fused in an extruder, mixed, solidified by cooling and cut into a fixed size in order to manufacture pellet.
본 발명은 농업용 폐 필름을 이용한 성형품의 제조방법에 관한 것으로서, 농업용 폐 필름을 수거하여 수분을 제거하기 위해 농업용 폐 필름을 건조하고, 혼련하기에 적합하게 파쇄하고, 분산제, 결합제 및 강도 증대를 위한 무기입자인 견운모와 건식 혼합한 후에, 혼련 시 유동성 개선을 위한 폴리에틸렌테레프탈레이트 수지와 함께 용융 혼련하고 냉각 고화하여 성형용 폴리에틸렌 수지를 제조하고, 이 수지로 성형하여 성형품을 제조하는 것이다. 본 발명에 따르면 농업용 폐 필름의 토사를 제거하는 세척 단계가 필요하지 않아, 성형품의 제조 공정이 간소화될 수 있으며, 토사가 농업용 폐 필름으로부터 제조되는 성형용 폴리에틸렌 수지에서 충전제로서 역할을 하여, 성형용 수지의 기계적 물성을 향상시킬 수 있다.

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