According to national standard GB 2546-88, polypropylene resin is classified according to the type of polymer, main use, isotactic index, melt index and material characteristic performance. Polypropylene resin is composed in the following order. Material characteristics Performance melt index (see Table 1) Table 1 Polymer Types H Homopolymer C Block copolymer R Random copolymer M mixture Table 2 Main uses B C E F Blow molding Squeeze Extrusion film K L M P Cable coating Monofilament Injection molding Pipe R S T Y Rotary molding Robe plastic fiber Flat yarn Table 3 The isotactic index Numbering 98 93 85 Regulation/% 95-100 90-95 80-85 Numbering 75 65 55 Regulation/% 70-80 60-70 50-60 Table 4 Melt index Numbering 002 007 015 Melt index/g•10min-1 0.1-0.3 0.3-1 1-2 Numbering 030< Rayon Fabric,Rayon Challis Fabric,100 Rayon Fabric,Rayon Cotton Fabric SHAOXING HENGHAI TEXTILE CO.LTD. , https://www.henghaitextile.com
Regulation index (see Table 2)
The main purpose (see Table 3)
Polymer type (see Table 4)