丰满老妇高潮一级A片,亚洲精品无码一区二区丁香,成人性爱免费视频,国产69精品久久久久熟女白洁
13601942333
...
Foaming Agent system
Foaming Agent system

Foaming agent unit:  

Standard Configuration for foaming agent injection adopts 3 separate units of injection systems, for CO2, ethonal, and third agent (Freon, DME, Butane, or others). 

  

CO2 properties and foaming process requirements: 

1. The concept of supercritical foaming: supercritical CO2 foaming technology. Carbon dioxide in temperature above the critical temperature (Tc) 31 ℃, 3 mpa pressure is higher than critical pressure (Pc), under the condition of nature change, its close to liquid density, viscosity to gas, liquid diffusion coefficient for 100 times, and thus has a strong ability to dissolve, this state is CO2 supercritical state. 

2. Supercritical foaming requirements: CO2 supercritical state is determined by the temperature and pressure, because of the CO2 in the supercritical state has high diffusion coefficient, so the supercritical state is unstable, for application of supercritical foaming XPS production process is the need to have a stable working pressure, and the lower mold temperature. The CO2 injection also needs a stable flow, the process characteristics of XPS production equipment has significant improvement requirements are needed to meet. 

2  

Han plastic company CO2 XPS extruded insulation board production equipment technology security system: 

1, choose German production lind injection system 

Features: pneumatic pump injection control, the whole chain pressure control and flow closed loop control. Injection stable accurate belongs to the world's top CO2 injection control technology. 

3

2, choose German production riva pump injection 

Features: three head diaphragm pump injection control, and flow meter combination form a closed-loop control system. Injection is stable. 

4

  


備案號:滬ICP備11013943號-1  CopyRight ? 2016 Shanghai Hansu Platic Machinery Co.,Ltd, All Rights Reserved
【Disclaimer】 | 【Land】
亚洲小视频在线观看 | 亚洲无码AV一区二区 | 国产一级在线观看 | 特级西西人体WWWww | 亚洲高清无码在线 | EEUSS鲁丝片人妻麻豆 | 影音先锋亚洲资源站 | 伦伦影院午夜理论片痴汉 | 中文字幕av久久爽一区 | 欧美成熟少妇婬A片好爽 | 无码秘 蜜桃一区二区 | 苍井空一级婬片A片免费观看 | 午夜A片免费观看高清视频小说 | 天堂VA蜜桃一区二区三区漫画版 | 东北女与黑人床战A片 | 国产成人无码精品一区二区 | 欧一美一性一交一精品 | 四虎永久在线精品无码 | 蜜臀av一区二区 | 国产无遮挡A片又黄又爽 | 亚洲国精产品二二三三区 | 亚洲国产成人精品女人久久久 | 鲁大师在线观看日本电影 | 岳伦和岳伦一区二区三区的区别 | 天天躁日日躁AAAXXⅩ | 国产精品国产三级片 | 四川少妇XXXⅩ性XXX | 成人做爰A片免费看视频 | 九九精品在线观看 | 中文字幕精品在线观看 | 2019中文在线观看免费观看电视剧 | 国产香蕉人妻精品一区二区 | 国产美女裸体无遮挡免费视频网站 | 精品欧美一区二区三区 | 老熟女痒到不行-ThePorn | 水果派中文解说AⅤ | 国产黄色视频网站 | 性猛交XXXX乱大交孕妇2十 | 国产一级a看免费视频 | 99久久婷婷国产综合精品电影 | 亚洲秘 无码一区二区三区电影 |