论文部分内容阅读
一些易碎产品所用的包装材料大多数采用苯乙烯多孔塑料,这种塑料所制成的仪器设备包装箱内的填充物,实际上消耗了不可更新的原料——石油。在它的生产过程中,又产生了对地球臭氧层有害的气体。而且,这种包装材料是不能被降解的,它会长期积累在自然界中,最近德国一位科学发明了用废纸制造泡沫包装材料的新技术。将劣质的纸张切成细碎,然后辗成独特的纤维,与淀粉掺和在一起。由这些浆状物再压制成颗粒,把它们放进密封的器皿中,施加高压和过热的蒸汽,然后急剧地减压,颗粒便起泡沫,形成多孔的小球。它们在承受冲撞时,功能优于苯乙烯。采用这种新方法制造出来的包装材料,比苯乙烯便宜,而且丢弃以
Most of the packaging materials used for fragile products are made of styrenic porous plastic, and the filling of the packaging of equipment made of this plastic actually consumes a non-renewable raw material, petroleum. In its production process, gases that are harmful to the earth’s ozone layer are produced. Moreover, this packaging material can not be degraded, it will accumulate in nature for a long time, a German recently invented a new technology for making foam packaging materials from waste paper. The bad paper cut into fine crushed, and then rolled into unique fibers, and starch blended together. The slurry is then compacted into pellets, placed in a sealed vessel, pressurized and superheated steam is applied, and then abruptly depressurized, the pellets foam to form porous pellets. They withstand surges and function better than styrene. The packaging made using this new method is cheaper than styrene and discarded