阀口袋分类

阀口袋按材质可分为：pp阀口袋，PE阀口袋，纸塑复合阀口袋，牛皮纸阀口袋以及多层牛皮纸阀口袋。PP阀口袋是由聚丙烯编织布上阀口或下阀口而成，比一般的PP编织袋能提高包装效率;PE阀口袋是由聚乙烯编织布阀口而成;纸塑复合阀口袋是以塑料编织袋（简称布）为基材，经流延法复合后制成的（布/膜复合为二合一，布/膜/纸复合为三合一）;牛皮纸阀口袋的材质主要是牛皮纸，其中牛皮纸又分为进口牛皮纸和国产牛皮纸两种。

阀口袋按开口可分为：上开口阀口袋，下开口阀口袋，上下开口阀口袋。


Valve pocket classification
Valve pockets can be divided by material: PP valve pockets, PE valve pockets, paper plastic compound valve pockets, cowhide paper valve pockets and multi-layer cowhide paper valve pockets. PP valve pocket is made up of polypropylene woven fabric upper valve or lower valve, which can improve the packaging efficiency than the general PP woven bag; PE valve pocket is made of polyethylene woven cloth valve mouth; Paper plastic compound valve pocket is made of plastic woven bag(abbreviated as cloth) as the base material, and is made after the lamination method is combined(cloth / membrane compound is two in one, cloth / membrane / paper compound is three in one); The material of the cowhide valve pocket is mainly Kraft paper, of which Kraft paper is divided into imported Kraft paper and domestic Kraft paper.
Valve pockets can be divided into opening pockets: upper opening pockets, lower opening pockets, upper and lower opening pockets.