塑料加工方法调研报告

塑料加工方法调研报告

问:关于塑料袋的研究报告
  1. 答:Fuck you!Show what key!He got high。
  2. 答:塑料袋的危害:污染空气
问:关于“塑料袋”的调查报告 急用
  1. 答:recently a new law was launched about use of plastic bags the law stipulate all the plastic bag should prohibited which was not meet the reqirement of the goverment the law was promulgated on 2007 6 1 many people showed great support they say this bags may cause damage to our environment and the manufacturer should produce higher quality bags which ply with the law but many people say it also cause inconvenience if we didnt use plastic bags how could we carry thing and it is almost for us to carry a basket go to work and buy thing after work all plait like a landmine bombarded the goverment so how should the government do to consolidate the laws and also to make these people satisfied the goverment should pay arduous effect to pacify the temblor and walk their way back to track/normal
  2. 答:其实我也在写,不过没写好,你很急吗?能等几天吗?
问:塑料都有哪些加工方法
  1. 答:1、吸塑: 真空成型称为吸塑,是一种塑料加工工艺,主要原理是将平展的塑料材加热变软后,采用真空吸附于模具表面,冷却后成型。主要分为厚片吸塑铅逗蠢薄片吸塑两大类。广泛用于汽车附件、灯饰、广告、装饰、大型机械外壳、展示类、行空类、大家电、卫浴类等行业。
    2、注塑:即注塑成型,这种方法即是将塑料材料熔融,然后将其注入膜腔。熔融的塑料一旦进入模具中,它就受冷依模腔样成型成一定形状。常见的产品主要有:电脑机箱外壳,连接器,手机外壳,键盘,鼠标指穗,音响等。
    3、:也称中空吹塑,一种发展迅速的塑料加工方法。经挤出或注射成型得到的管状塑料型坯,趁热(或加热到软化状态),置于对开模中,闭模后立即在型坯内通入压缩空气,使塑料型坯吹胀而紧贴在模具内壁上,经冷却脱模,即得到各种中空制品。生活中常见的瓶、桶、罐、箱以及所有包装食品、饮料、化妆品、药品和日常用品的容器等用的塑料加工工艺都是吹塑。
    4、挤出:挤出成型在塑料加工中又称为挤塑,在橡胶加工中又称压出。是指物料通过料筒和螺杆间的作用,边受热塑化,边被螺杆向前推送,连续通过机头而制成各种截面制品或半制品的一种加工方法。挤出的制品都是连续的型材,如管、棒、丝、板、薄膜、电线电缆包覆层等。其中最常用的就是PS,PE,PP,TPE,TPE,TPU等。加工完成后出现在我们槐陪生活中的就有像什么LED灯罩,排水管,超市价格牌等。
  2. 答:注塑、吹塑、吸塑、挤塑
塑料加工方法调研报告
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