图片展示
English
  • 中文
图片展示

How to distinguish PET plastic bottles from PVC plastic bottles

2021-08-30 09:47:41

Click:

There is almost no difference in appearance and hand feel between PET plastic bottles and PVC plastic bottles. Is there a simple method for material identification? 


PET is a degradable plastic. Under the advocacy of environmental protection from all walks of life, the usage is increasing. The use of food packaging bottles almost completely replaces PVC bottles. In the past, many mineral water bottles and so on were made of PVC materials. Now, almost all the plastic bottles for drinking water and beverages are made of PET. 


How do ordinary people distinguish PET plastic bottles from PVC plastic bottles without special physical or chemical tests? 


Check the logo at the bottom of the bottle

General plastic bottles need to be engraved with the mark of raw materials on the bottom of the bottle. The bottom of the PET bottle will have the word "PET", and the PVC bottle will be printed with the word "PVC" accordingly. This is the simplest and most intuitive method.


View manufacturing process 

What if some bottles are not marked with raw materials? This is the case. Or will PVC pretend to be PET? After all, PET is much more expensive than PVC. In fact, some differences can be seen from some details on the bottle. It takes two steps to make a PET bottle. First, the bottle blank is injection molded into a bottle blank, and then the bottle blank is blow molded, so there will be a filling port in the center of the bottom of the PET bottle. PVC is a production, do not need injection molding to make the bottle blank, direct blow molding bottle bottom is no injection molding mouth. This feature can be seen at a glance.


Secondly, look at the mold marks of the bottle body. In the manufacturing process of PVC bottles, the melted raw materials are directly molded and cooled in the mold, and an obvious edge is easily formed at the gap of the mold. PET bottle is heated and softened bottle blank is put into the mold to blow the bottle. The edge line of the mold is relatively not obvious. If you touch it with your hand, the edge line is much rounder.


Taizhou Sennuo Plastics Co., Ltd welcomes your call

Author: Taizhou Sennuo Plastics Co., Ltd
How to distinguish PET plastic bottles from PVC plastic bottles
Long by picture save/share

Email:183440968@qq.com     Address:Xuanmen Industrial City, Lupu Town, Yuhuan City, Taizhou City, Zhejiang Province, China     Technical support:JiuQian Technology     浙ICP备12345678号-1

Mr Pan      sales01@sen-nuo.com        Mobile:0086-13516761081       Email: 183440968@qq.com 

Company Address: Xuanmen Industrial City, Lupu Town, Yuhuan City, Taizhou City, Zhejiang Province       Powered by www.tzjq.com.cn

 

添加微信好友,详细了解产品
使用企业微信
“扫一扫”加入群聊
复制成功
添加微信好友,详细了解产品
我知道了