CN114211640A - 废旧滴灌带及废旧大棚膜全回收再生产方法 - Google Patents
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Abstract
本发明涉及废旧滴灌带及废旧大棚膜全回收再生产方法,涉及废旧滴灌带及废旧大棚膜资源回收再利用技术领域,包括如下步骤:废旧料清洗:将废旧滴灌带及废旧大棚膜放入清洗池进行充分清洗;废旧料烘干:将清洗后的废旧滴灌带及废旧大棚膜进行烘干;废旧料切碎:将烘干后的废旧滴灌带及废旧大棚膜切碎;原料混合:将切碎的废料与塑料新料、染色母料进行充分混合;造粒:将混合后的原料加入挤出机进行挤出造粒;成膜:将原料粒进行吹塑成膜,完成废料的再生产。本发明能实现废旧滴灌带及废旧大棚膜最大化利用,且生产出的产品性能良好,应用效果佳。
Description
技术领域
本发明涉及废旧滴灌带及废旧大棚膜资源回收再利用技术领域,具体涉及废旧滴灌带及废旧大棚膜全回收再生产方法。
背景技术
大棚膜是指用于设施农业生产建设的专用塑料薄膜,其透光率,保温,抗拉及耐老化方面的性能均优于普通农膜。对大棚农作物的生长,增产及增收具有重要意义。我国常用的大棚膜主要有四种:第一种是聚氯乙烯棚膜;第二种是聚乙烯棚膜;第三种是乙烯-醋酸乙烯共聚物棚膜;第四种是调光性农膜。
滴灌带是利用塑料管道将水通过直径约10mm毛管上的孔口或滴头送到作物根部进行局部灌溉。是通过出流孔口非常小入的滴头或滴灌带,把水一滴一滴地均匀而缓慢地滴在作物根部附近的土壤中。
大棚膜和滴灌带使用较长时间后,风吹日晒会导致老化,并产生大量的废旧塑料,由于塑料为高分子聚合物,化学性质稳定,难以在自然环境中降解,造成“白色污染”和严重的环境污染。
现有一些回收利用措施,能够将大棚膜和滴灌带进行回收,但是处理工艺不完善,没有成熟的工艺体系,处理效果层次不齐,从而影响回收利用的效果,没有最大限度的实现资源回收利用。
发明内容
本发明为了解决现有技术的问题,提供废旧滴灌带及废旧大棚膜全回收再生产方法,回收处理工艺能实现废旧滴灌带及废旧大棚膜最大化利用,且生产出的产品性能良好,应用效果佳。
本发明通过下述技术方案实现:废旧滴灌带及废旧大棚膜全回收再生产方法,包括如下步骤:
废旧料清洗:将废旧滴灌带及废旧大棚膜放入清洗池进行充分清洗;
废旧料烘干:将清洗后的废旧滴灌带及废旧大棚膜进行烘干;
废旧料切碎:将烘干后的废旧滴灌带及废旧大棚膜切碎;
原料混合:将切碎的废料与塑料新料、染色母料进行充分混合;
造粒:将混合后的原料加入挤出机进行挤出造粒;
成膜:将原料粒进行吹塑成膜,完成废料的再生产。
本发明废旧滴灌带及废旧大棚膜全回收再生产方法,对废旧滴灌带及废旧大棚膜先进行充分清洗,对杂质进行去除,提升废料回收的质量,然后经过烘干、切碎、混合、造粒、成膜等一系列工艺实现回收再生产,整个工艺体系完善,工艺简单易操作,废料再生产效果突出,质量优异;废旧滴灌带及废旧大棚膜全回收再生产方法,对工艺流程和参数进行了优化,实现废旧料的最大化利用,且回收利用效率高,能够大大减小环境污染,资源回收利用最大化,不影响大棚的正常使用。
进一步,所述废旧料清洗步骤中,将废旧滴灌带及废旧大棚膜放入超声清洗池,所述超声清洗池的振荡频率为0.6-1MHz。
超声清洗池的振荡频率为0.6-1MHz,采用此频率段,可将废旧料进行充分的清洗,并且节能。
更进一步,所述废旧料清洗步骤中,清洗完毕后,超声清洗池将污水和杂物排出,然后将废旧料输送至烘干机。
超声清洗完毕,将污水和细小杂物过滤掉,减少废旧料的杂物。
进一步,所述废旧料烘干步骤中,将废旧料放入烘干机,所述烘干机的温度设置为180-300℃。
废旧料放入烘干机进行充分的烘干,不影响后续的加工。
进一步,所述废旧料切碎步骤中,将烘干的废旧料在切碎机中切成小于3cm²的小块。
将废旧料在切碎机中切成小于3cm²的小块,便于后续的共混加工。
进一步,所述原料混合步骤中,将烘干后的废旧料、塑料新料、染色母料加入到熔融共混机,熔融共混机熔融温度为240-320℃,冷却固型,然后拉丝并切成细段。
将废旧料、塑料新料、染色母料熔融共混,在实现废料的全回收的同时,保障回收生产产品的质量;对混合料进行组分配比,共混的原料加工出的产品性能良好;对设备工艺参数进行优化,增强产品性能。
更进一步,所述原料混合步骤中,废旧料、塑料新料、染色母料按重量份数计,比例为85-95:6-10:1-3,所述废旧滴灌带和废旧大棚膜按重量份数计,比例为45-55:35-45。
更进一步,塑料新料为聚乙烯、聚丙烯、聚氯乙烯树脂中的一种或多种,所述染色母料为乙烯-乙酸乙烯共聚物、 线性低密度聚乙烯、低密度聚乙烯共混物。
染色母料为乙烯-乙酸乙烯共聚物、 线性低密度聚乙烯、低密度聚乙烯共混物,获得防雾滴防老化的双防母料。
进一步,所述造粒步骤中,将经过共混的原料加入到双螺杆挤出机中造粒,双螺杆挤出机一段温度为50-90℃,二段温度为120-180℃,三段温度为120-180℃,四段温度为120-180℃,五段温度为180-220℃,六段温度为180-220℃,七段温度为180-200℃。
进一步,所述成膜步骤中,将造粒后的原料加入到成膜机中进行吹塑成膜,获得新的大棚膜。
本发明与现有技术相比,具有如下的优点和有益效果:
1、本发明废旧滴灌带及废旧大棚膜全回收再生产方法,对废旧滴灌带及废旧大棚膜先进行充分清洗,对杂质进行去除,提升废料回收的质量,然后经过烘干、切碎、混合、造粒、成膜等一系列工艺实现回收再生产,整个工艺体系完善,工艺简单易操作,废料再生产效果突出,质量优异;
2、本发明废旧滴灌带及废旧大棚膜全回收再生产方法,废旧滴灌带及废旧大棚膜全回收再生产方法,对工艺流程和参数进行了优化,实现废旧料的最大化利用,且回收利用效率高,能够大大减小环境污染,资源回收利用最大化,不影响大棚的正常使用;
3、本发明废旧滴灌带及废旧大棚膜全回收再生产方法,将废旧料、塑料新料、染色母料熔融共混,在实现废料的全回收的同时,保障回收生产产品的质量;
4、本发明废旧滴灌带及废旧大棚膜全回收再生产方法,对混合料进行组分配比,共混的原料加工出的产品性能良好;对设备工艺参数进行优化,增强产品性能。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚明白,下面结合实施例,对本发明作进一步的详细说明,本发明的示意性实施方式及其说明仅用于解释本发明,并不作为对本发明的限定。
在一个实施例中,废旧滴灌带及废旧大棚膜全回收再生产方法,包括如下步骤:
废旧料清洗:将废旧滴灌带及废旧大棚膜放入清洗池进行充分清洗;
废旧料烘干:将清洗后的废旧滴灌带及废旧大棚膜进行烘干;
废旧料切碎:将烘干后的废旧滴灌带及废旧大棚膜切碎;
原料混合:将切碎的废料与塑料新料、染色母料进行充分混合;
造粒:将混合后的原料加入挤出机进行挤出造粒;
成膜:将原料粒进行吹塑成膜,完成废料的再生产。
在一个实施例中,所述废旧料清洗步骤中,将废旧滴灌带及废旧大棚膜放入超声清洗池,所述超声清洗池的振荡频率为0.6-1MHz。
在一个实施例中,所述废旧料清洗步骤中,清洗完毕后,超声清洗池将污水和杂物排出,然后将废旧料输送至烘干机。
在一个实施例中,所述废旧料烘干步骤中,将废旧料放入烘干机,所述烘干机的温度设置为180-300℃。
在一个实施例中,所述废旧料切碎步骤中,将烘干的废旧料在切碎机中切成小于3cm²的小块。
在一个实施例中,所述原料混合步骤中,将烘干后的废旧料、塑料新料、染色母料加入到熔融共混机,熔融共混机熔融温度为240-320℃,冷却固型,然后拉丝并切成细段。
在一个实施例中,所述原料混合步骤中,废旧料、塑料新料、染色母料按重量份数计,比例为85-95:6-10:1-3,所述废旧滴灌带和废旧大棚膜按重量份数计,比例为45-55:35-45。
在一个实施例中,塑料新料为聚乙烯、聚丙烯、聚氯乙烯树脂中的一种或多种,所述染色母料为乙烯-乙酸乙烯共聚物、 线性低密度聚乙烯、低密度聚乙烯共混物。
在一个实施例中,所述造粒步骤中,将经过共混的原料加入到双螺杆挤出机中造粒,双螺杆挤出机一段温度为50-90℃,二段温度为120-180℃,三段温度为120-180℃,四段温度为120-180℃,五段温度为180-220℃,六段温度为180-220℃,七段温度为180-200℃。
在一个实施例中,所述成膜步骤中,将造粒后的原料加入到成膜机中进行吹塑成膜,获得新的大棚膜。
以上所述的具体实施方式,对本发明的目的、技术方案和有益效果进行了进一步详细说明,所应理解的是,以上所述仅为本发明的具体实施方式而已,并不用于限定本发明的保护范围,凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (10)
1.废旧滴灌带及废旧大棚膜全回收再生产方法,其特征在于,包括如下步骤:
废旧料清洗:将废旧滴灌带及废旧大棚膜放入清洗池进行充分清洗;
废旧料烘干:将清洗后的废旧滴灌带及废旧大棚膜进行烘干;
废旧料切碎:将烘干后的废旧滴灌带及废旧大棚膜切碎;
原料混合:将切碎的废料与塑料新料、染色母料进行充分混合;
造粒:将混合后的原料加入挤出机进行挤出造粒;
成膜:将原料粒进行吹塑成膜,完成废料的再生产。
2.根据权利要求1所述的废旧滴灌带及废旧大棚膜全回收再生产方法,其特征在于,所述废旧料清洗步骤中,将废旧滴灌带及废旧大棚膜放入超声清洗池,所述超声清洗池的振荡频率为0.6-1MHz。
3.根据权利要求2所述的废旧滴灌带及废旧大棚膜全回收再生产方法,其特征在于,所述废旧料清洗步骤中,清洗完毕后,超声清洗池将污水和杂物排出,然后将废旧料输送至烘干机。
4.根据权利要求1所述的废旧滴灌带及废旧大棚膜全回收再生产方法,其特征在于,所述废旧料烘干步骤中,将废旧料放入烘干机,所述烘干机的温度设置为180-300℃。
5.根据权利要求1所述的废旧滴灌带及废旧大棚膜全回收再生产方法,其特征在于,所述废旧料切碎步骤中,将烘干的废旧料在切碎机中切成小于3cm²的小块。
6.根据权利要求1所述的废旧滴灌带及废旧大棚膜全回收再生产方法,其特征在于,所述原料混合步骤中,将烘干后的废旧料、塑料新料、染色母料加入到熔融共混机,熔融共混机熔融温度为240-320℃,冷却固型,然后拉丝并切成细段。
7.根据权利要求6所述的废旧滴灌带及废旧大棚膜全回收再生产方法,其特征在于,所述原料混合步骤中,废旧料、塑料新料、染色母料按重量份数计,比例为85-95:6-10:1-3,所述废旧滴灌带和废旧大棚膜按重量份数计,比例为45-55:35-45。
8.根据权利要求7所述的废旧滴灌带及废旧大棚膜全回收再生产方法,其特征在于,塑料新料为聚乙烯、聚丙烯、聚氯乙烯树脂中的一种或多种,所述染色母料为乙烯-乙酸乙烯共聚物、 线性低密度聚乙烯、低密度聚乙烯共混物。
9.根据权利要求1所述的废旧滴灌带及废旧大棚膜全回收再生产方法,其特征在于,所述造粒步骤中,将经过共混的原料加入到双螺杆挤出机中造粒,双螺杆挤出机一段温度为50-90℃,二段温度为120-180℃,三段温度为120-180℃,四段温度为120-180℃,五段温度为180-220℃,六段温度为180-220℃,七段温度为180-200℃。
10.根据权利要求9所述的废旧滴灌带及废旧大棚膜全回收再生产方法,其特征在于,所述成膜步骤中,将造粒后的原料加入到成膜机中进行吹塑成膜,获得新的大棚膜。
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