MEM86-E16K
发布时间:2019-05-08 14:47:49点击率:
MEM86-E16K
MEM86-E16K
MEM86-E16K
MEM86-E16K
吹膜机是将塑胶粒子加热融化再吹成薄膜,将干燥的聚乙烯粒子通过下料斗进入螺杆,然后通过螺杆将塑胶粒子向前推移,推移过程中,由于塑胶与螺杆、塑胶与机筒之间的摩擦以及粒子间的碰撞磨擦,和料筒外部加热逐步熔化。熔融的塑胶机头模口出来,经风环冷却,吹胀后经过人字挡板,和牵引滚筒压成薄膜收卷成筒。吹膜机的出料速度可达20~100m/min,甚至 达200m/min以上。多层共挤吹薄膜机生产出的薄膜具有高透明、耐穿刺、高韧性、低温热切性佳、复合牢度佳、防卷曲性等特点。
二、工作原理
吹膜机是一种将塑料粒子加热融化并吹成薄膜的设备,主要由吹膜和收卷两部分组成。其中收卷部分的作用是将吹制出的薄膜卷取成卷,并使成卷的薄膜平整无皱纹, 卷边整齐, 卷轴上的薄膜要松紧适中,以防止薄膜拉伸变形,保证质量,因此收卷时必须采用恒张力控制。目前行业内主要使用力矩电机来实现上述控制,但在使用过程中存在着需手动调节,操作不方便,长时间运行时力矩电机发热较高,其控制器较易损坏,可靠性不高的缺点。
吹膜机收卷工艺介绍
1. 在整个收卷过程中都必须保持恒定的张力,且无需人工调节;
2. 空卷启动时不能张力过大,防止薄膜起皱,满盘运行时不能张力过小,防止薄膜卷取过松;
3. 系统响应灵敏,加、减速过程中能够根据前级速度及张力的变化快速调节,保证张力恒定;
4. 要求将张力量化,即能根据不同薄膜生产的工艺要求来设定张力大小。
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