Modern edible oil filling lines are engineered to accommodate diverse packaging requirements, focusing on material durability, bottle design, and operational efficiency. Below is a detailed classification based on packaging materials and bottle types:
1. Packaging Materials
a. Plastic Containers
PET (Polyethylene Terephthalate): Lightweight, shatterproof, and recyclable, PET bottles dominate retail oil packaging. Available in transparent or colored variants, they are ideal for sunflower(sunflower oil filling line), canola, and blended oils.
HDPE (High-Density Polyethylene): Known for chemical resistance, HDPE is used for bulk oils (5–20L) or opaque bottles to protect light-sensitive oils like flaxseed.
b. Glass Bottles
Premium oils (e.g., olive, avocado) often use amber or green glass to block UV light, preserving freshness. Glass suits 250ml–1L sizes, emphasizing luxury and sustainability.(olive oil filling line)
c. Metal Containers
Tinplate or aluminum cans (1–5L) are chosen for industrial-grade oils or specialty products (e.g., coconut oil). They offer superior barrier properties against oxidation(coconut oil filling line,palm oil filling line).
2. Bottle Designs
a. Standard Shapes
Round Bottles: Common for PET and glass, optimized for ergonomic handling and labeling.
Square/Flat-Sided Bottles: Space-efficient for shipping and shelving, often used for HDPE bulk containers.
b. Specialty Designs
Drip-Free Necks: Integrated pour spouts reduce waste, popular for premium glass bottles.
Handle-Embedded Jugs: Added to HDPE containers (3L+) for easy pouring.
Custom Embossing: Glass or metal containers may feature brand logos or patterns for visual appeal.
c. Capacity Variations
Edible oil filling lines support sizes from 200ml to 20L (industrial drums), with adjustable nozzles for precision.
3. Customization & Technology Integration
Filling systems adapt to material-specific needs:
Plastic: High-speed rotary fillers with capping stations for screw-top or tamper-evident lids.
Glass: Gentle handling systems to prevent breakage, paired with vacuum filling to minimize air exposure.
Metal: Seamless seam sealing post-filling to ensure airtightness.
Advanced lines incorporate nitrogen flushing to extend shelf life and checkweighers for regulatory compliance.
