Grade Polyethylene pertama yang diproduksi melalui proses tabung bertekanan tinggi atau autoclave. Grade ini ditandai dengan rantai polymer yang sangat bercabang, yang mengurangi crystallinity dan meningkatkan kejernihan serta elastisitas. LDPE banyak digunakan dalam pembuatan berbagai produk seperti heavy-duty films, packaging films, kantong zip, general-purpose films, shrink films, foam sheets, bubble films, dan tubes.
| PROPERTIES | TEST METHOD | UNIT | LDPE | ||||||
|---|---|---|---|---|---|---|---|---|---|
| HEAVY DUTY FILMS/BLOW | GENERAL FILMS/INJECTION | ||||||||
| MFR | ISO 1133 | g/10 min | 0,27 | 0,75 | 1,90 | 1,90 | 4 | 4 | 4 |
| Density | ISO 1183 | g/cm3 | 0,922 | 0,922 | 0,924 | 0,924 | 0,924 | 0,924 | 0,92 |
| Melting Temperature | ISO 11357 | oC | 112 | 112 | 110 | 110 | 110 | 110 | 109 |
| Vicat Softening Point | ASTM D1525 | oC | 96 | 94 | 93 | 93 | 93 | 93 | 86 |
| Film Properties** | |||||||||
| Haze | ASTM D1003 | % | 8 | 6 | 6 | 7 | 7 | 8 | 6 |
| Gloss (20oC) | ASTM D2457 | - | 50 | 60 | 80 | 80 | 90 | 90 | 70 |
| Dart Drop Impact | ASTM D1709 | g | 220 | 170 | 140 | 150 | 130 | 120 | 120 |
| Max. Tensile Strength (MD) | ISO 527 | MPa | 28 | 25 | 23 | 23 | 20 | 20 | 19 |
| Max. Tensile Strength (TD) | ISO 527 | MPa | 27 | 23 | 20 | 20 | 18 | 18 | 17 |
| Ultimate Elongation (MD) | ISO 527 | % | 450 | 400 | 500 | 500 | 560 | 500 | 560 |
| Ultimate Elongation (MD) | ISO 527 | % | 700 | 700 | 700 | 700 | 700 | 630 | 700 |
| Slip Antiblock | No | No | No | yes | - | Yes | Yes | ||
| Application | Heavy duty films, agricultural films, shrink films, tubes, & extrusion blow moulding | General purposes film, zip bags, PE foam sheet & air bubbles | |||||||