青草影院内射中出高潮 I 熟女俱乐部五十路六十路 I 神马久久亚洲 I 欧美久久a I www.四虎在线观看 I 精品av综合导航 I 黄色片国产片 I 久久精品天天 I www色 I 青草草在线视频免费观看 I 18禁床震无遮掩视频 I 欧美3p两根一起进高清视频 I 亚洲国产中文在线观看 I 黄色大片网站免费 I 国产xxxxx I 国产精品国产三级国产专区51区 I 英语老师丝袜娇喘好爽视频 I 天天综合天天干 I 99精品国产免费久久 I 欧美猛操 I 天天干夜夜躁 I 免费视频爱爱太爽了 I 中文字幕一区二区三区免费 I 婷婷国产一区二区三区 I 日本中文字幕色 I 激情av一区二区 I 亚洲性无码一区二区三区 I 双乳奶水饱满少妇呻吟免费看 I 成人自慰女黄网站免费大全 I www.色com I av色偷偷 I 狠狠丁香视频 I 神马久久久久 I 女教师日记 电影 I 午夜激情理论片

Welcome to Dongguan jieteng Electronics Co., Ltd. official website!

Comparison of EVA foam, EPE pearl cotton and sponge

Popularity:6194Publication time:2018-4-28
EVA foam, EPE pearl cotton and sponge are all materials that can be used as packing liners. The three are all foamed materials. Although the three can be used to make packaging materials, each has its own advantages, each with its own characteristics. Today, EVA lining manufacturers tell you the difference between EVA foam, EPE pearl cotton and sponge, which is better to compare.
1.EVA foam is a foaming material made of EVA material, which has good softness and elasticity like rubber. As a building material, it can be used for waterproofing, fire prevention and sound insulation. It is a harmless, tasteless and harmless product.
2.EPE pearl cotton is a kind of high foam polyethylene which is mainly produced by low density polyethylene. It overcomes the defects of fragile and easy deformation of ordinary packaging materials. EVA foam has the functions of water separation, moisture proof, shockproof, sound insulation and heat preservation.
3. sponges
Sponge is made of polyisocyanate and polyol as raw material. It is a kind of polymer material and has its shape in many sponge products.
EVA lining manufacturers believe that any foaming material has its own characteristics and advantages. Sponges are generally elastic yellowish products, EVA is the three in the comparison and a bit hard, pearl cotton is often white, of course, whether it is EVA foam, EPE pearl cotton, or sponge, if the customer has the requirement, can be made into any shape of any color.
Key words:,,

Copyright © 2018 Dongguan jieteng Electronics Co., Ltd.

Top