water_bottle Quick Selection Guide
- PET (Resin Code 1): Crystal-clear, glass-like clarity, high oxygen barrier. Ideal for retail edible oil (500ml–2L), syrups, sanitisers, and FMCG displays.
- HDPE (Resin Code 2): Opaque/translucent, extreme impact toughness, superior moisture and chemical barrier. Ideal for bulk oil jars (1L–15L), handled jerry cans, and agrochemicals.
Material Properties Comparison Matrix
| Property | PET (Polyethylene Terephthalate) | HDPE (High-Density Polyethylene) |
|---|---|---|
| Clarity & Appearance | 90%+ optical transparency (glass-like) | Translucent natural or opaque pigmented |
| Impact Resistance | High (shatterproof vs glass) | Extreme (resists repeated pallet drops) |
| Oxygen Barrier | Excellent (prevents oil rancidity) | Moderate (adequate for quick turnover) |
| Moisture Barrier | Good | Outstanding (zero moisture transmission) |
| Chemical Resistance | Moderate (sensitive to strong alkalis) | Superior (inert to acids, bases, solvents) |
| Recycling Code | Resin Identification Code #1 | Resin Identification Code #2 |
Industry Application Breakdown
1. Mustard Oil & Refined Vegetable Oils
For supermarket retail shelves, 500 ml and 1 litre PET bottles are preferred because consumers demand to inspect oil clarity and golden color before purchase. However, for 5 litre to 15 litre bulk commercial packaging, HDPE oil jars and handled jerry cans are essential to withstand the massive hydraulic surge pressures during long-distance trucking.
2. Agrochemicals & Industrial Cleaning Liquids
Agrochemical liquids, disinfectants, and engine coolants require HDPE due to its Environmental Stress Crack Resistance (ESCR). PET is generally avoided for harsh chemicals due to potential solvent stress cracking.