📦 Packaging Materials
Polymer Materials
PP (Polypropylene)
High Melting Point
Temperature Resistance
Higher melting point than PE with better temperature resistance. Two types: cast (CAPP) and oriented (OPP) films.
PET (Polyethylene Terephthalate)
Biaxial Orientation
Thermal Resistance
Tough, temperature-resistant polymer used in laminates for strength, stiffness and temperature resistance.
NY (Nylon)
Oxygen Barrier
Aroma Barrier
Polyamide resins with excellent oxygen/aroma barriers but poor water vapor resistance. Includes BON (Bi-axially Oriented Nylon) and CAN (Cast Nylon).
AL (Aluminium Foil)
Full Barrier
Thin-gauge aluminium foil laminated to plastic films for maximum oxygen, aroma, and water vapor barriers.
EVA (Ethylene-Vinyl Acetate)
Flexible Films
Low Melt Temp
Softer and clearer than LDPE/LLDPE with lower melt temperature. Used for flexible films.
EVOH (Ethylene-Vinyl Alcohol)
Oxygen Barrier
Exceptional oxygen barrier properties but poor water vapor resistance. Often sandwiched between protective layers.
Surlyn®
Heat Sealability
Hot Tack
Ionomer copolymer with excellent heat-sealability and hot tack strength.
VMPET (Vacuum Metallised PET)
Barrier Enhancement
PET film metallized for improved oxygen/water vapor barriers.
MET-PET/MET-OPP
Metallized Films
Metallized PET or OPP films for enhanced barrier properties.
LDPE/LLDPE/HDPE/MDPE
PE Variants
Polyethylene variants with varying densities, stiffness, and barrier properties.
🔧 Processes & Techniques
Adhesive Lamination
Bonding
Laminating packaging layers with adhesive.
Extrusion Lamination
PE Bonding
Bonding layers using molten resin (e.g., PE) between films.
Blown/Cast Films
Film Production
Methods for producing plastic films (e.g., LDPE, PP).
Biaxial Orientation
Strength Enhancement
Stretching films in machine and transverse directions for strength.
Heat Sealing
LLDPE Sealant
Sealing layers using heat, with sealant materials like LLDPE or Surlyn®.
Cold Seal
Pressure-sensitive
Pressure-sensitive adhesive sealing without heat.
Retort Processing
Sterilization
Sterilizing packaged products under high heat/pressure.
Aseptic Packaging
Sterile Filling
Filling pre-sterilized products into sterile packs.
Direct Heat Sealer
Foil Handling
Sealing thicker/foil-based materials with heated jaws.
📐 Packaging Types & Features
Doy Pack
Stand-up
Gussets
Stand-up pouch with side/bottom gussets.
Plow-Bottom Pouch
Heavy-Duty
One-piece stand-up pouch with continuous front/gusset/back for heavy products.
Stick Pouch
Single-Serve
Narrow pouch for single-serve powders (e.g., coffee).
Zipper Pouch
Reclosable
Reclosable pouch with interlocking plastic tracks.
Blister Packaging
Product Security
Item secured between a plastic dome and carrier.
Vacuum Packaging
Air Removal
Air removal to inhibit product degradation.
Form-Fill-Seal (FFS)
Automation
Pouch formed, filled, and sealed on a single machine.
Die-Cut Pouch
Custom Shape
Contoured pouch trimmed with a die-punch.
⚙️ Properties & Testing
Barrier Properties
Gas Blocking
Ability to block gases, moisture, or aromas (e.g., foil, EVOH).
OTR (Oxygen Transmission Rate)
cc/m²/day
Measured oxygen permeability under specific humidity.
WVTR/MVTR
Moisture Control
Water vapor transmission rate measurement.
Tensile/Tear Strength
Durability
Resistance to breaking or tearing.
COF (Coefficient of Friction)
Surface Slipperiness
Measurement of film surface friction characteristics.
Opacity
Light Blocking
Light-blocking ability of pigmented films.
Hot Tack Strength
Seal Integrity
Seal strength before cooling (critical for high-speed packaging).
🎨 Printing & Finishing
Flexography
Relief Printing
Rubber/plate-based relief printing.
Gravure/Rotogravure
Etched Plates
High-quality graphics printing with etched cylinders.
Reverse/Trap Printing
Ink Protection
Ink applied to the inner layer (trapped between film layers).
Surface Printing
Direct Application
Ink deposited directly on the outer layer.
PMS Number
Color Accuracy
Pantone Matching System for precise color reproduction.
✨ Special Components
Coffee Valve
Aroma Retention
Pressure relief valve for coffee/aroma retention.
Laser Scoring
Easy Opening
Precision cutting for easy-opening features.
Release Coating
Anti-stick
Special coating for cold-seal films.
