蜜桃av鲁一鲁一鲁一鲁樱花影院,亚洲无码在线免费观看,西西4444www无码国模吧,免费一级婬片A片AAA小说软件,成人免费黄色视频

News
Center
BACK
How to choose the lubricant of bag making machine non-woven bag making machine?
2019-04-19

Non-woven bag making machine can not repair the lubricating oil, how to choose the lubricant of the non-woven bag making machine? Lubricants are only required for their internal lubrication, but their choice is very simple, but in most cases it is best to adjust their internal and external lubrication to a certain extent.

The internal and external lubrication function of a lubricant is determined by its chemical composition, polarity, and solubility in the polymer melt. For example, stearic acid monoglyceride is soluble in the polyvinyl chloride melt and has partial internal lubrication. Its internal lubrication function comes from the action of two polar hydroxyl groups in the molecule; while glyceryl tristearate has only external lubrication function. Because it has no hydroxyl groups in its molecule. Of course, the lubrication function is also affected by impurities and other additives contained in the lubricant.

Non-woven bag making machine plastic lubricants range from natural materials such as montan wax, paraffin, mineral oil, animal and vegetable oils to various low molecular weight polymers such as low molecular weight fluororesins, silicone oils, low density polyethylene. Etc. More commonly used are some aliphatic compounds such as stearic acid, stearic acid soaps, and acid esters. And amide compounds.

In the United States in 1981, more than 10,000 tons of lubricants were used in plastic processing. The total amides accounted for 45%, stearic acid and its derivatives accounted for 35%, and wax compounds were again. Some lubricants, such as oleic acid amide, stearic acid amide, and hard metal salts of fatty acids (cadmium citrate) are themselves excellent anti-stickers. Non-woven bag making machine Lubricating oil can be made into a good smoothness by adding 0.5%. Of course, fillers such as silica and clay are also the longest-lasting anti-sticking agents in an amount of 0.1-1.0%, which are often referred to as opening agents.

亚洲一区二区视频在线观看 | 亚洲无码精品福利一区 | 成人黄色视频网站 | 一级a一级a爰片免费 | 亚洲免费观看高清完整版在线观看 | 国产精品久久久一本精品重冂色情 | 扒开腿挺进肉嫩小泬18禁 | 粗屌狠干骚穴内射 | 猫咪av大香蕉在线观看 | 亚洲欧美另类在线视频 | 搡老肥女老熟女老女人 | 四川野外少妇极品BBB | 欲www国产精品久久久 | 91蜜桃传媒吹潮粉嫩少妇 | 免费无码婬片17com | 亚洲成人性爱在线观看 | 无套内射在线无码播放 | 国产精品 日本 欧美 | 欧美成人精品三区综合A片 精产品99永久免费网页版 | 精品秘 一区性综合三区 | BBw揉BBBB搡BBBB动漫 | 四川一级毛片免费播放 | 17c无码少妇精品 | 91成人黄区AAA级 | 3d动漫啪啪精品一区二区免费 | 亚洲中文字幕在线播放 | 国产日产欧产精品精品网站 | 成人无码区免费A片久久鸭软件 | 久久精品人妻一区二区三区蜜桃 | 黄色视频三级片毛带 | 亚洲精品在线观看视频 | 奶大灬好爽灬一进一出 | 国产村妇肉体AAAA片 | 人妻日韩精品中文字幕 | 国产小视频在线不卡 | 国产午夜激无码毛片久久直播软件 | 黄色视频在线观看免费观看 | 性感女性黄色免费观看视频破解版 | 国产高清无码成人AV | 国产精品偷乱一区二区三区 | 欧美一级搡BBBB搡BBBB |