Pallet Wrap

Product Description

Pallet wrap (commonly known as stretch film or stretch wrap) is manufactured primarily from polyethylene resins and functional performance additives:

• Primary Base Resin (LLDPE): The core ingredient is Linear Low-Density Polyethylene (typically 80%95% of total formulation). It provides high tensile strength, high elongation, and exceptional tear resistance.

• Metallocene Polyethylene (mLLDPE): Blended into modern multilayer films (especially machine-grade) to significantly improve dart impact, puncture resistance, and stretch performance at thinner gauges.

• Cling Additives (Tackifiers): Primarily Polyisobutylene (PIB) or specialized ethylene copolymer tackifiers. These give the film its self-adhering properties without leaving sticky glue residue on products.

• Slip Agents & Release Additives: Used on the outer layer of one-side cling (differential cling) films to ensure wrapped pallets can touch each other during transit without sticking or tearing.

• Functional Masterbatches (Optional):

  • Color Pigments: Carbon black or titanium dioxide for UV blocking, tamper-evident security, and load concealment.

  • UV Stabilizers: Extend outdoor lifespan (protects from degradation under direct sunlight).

  • Anti-Static Additives: Prevent static dust accumulation on sensitive electronic components.

Manufacturing Types

Key Technical Specifications

• Thickness (Microns / Gauge):

  • 12 m to 15 m (5060 gauge): Light-duty loads, pre-stretched films, uniform box pallets.

  • 17 m to 20 m (7080 gauge): Industry standard for general warehousing and logistics loads.

  • 23 m to 30+ m (90120 gauge): Heavy-duty, irregular, sharp-edged, or high-density goods (e.g., machinery, bricks).

• Standard Widths:

  • Hand Rolls: 400 mm to 500 mm (16 in to 20 in).

  • Machine Rolls: 500 mm to 750 mm (20 in to 30 in).

  • Mini Bundling Rolls: 75 mm to 125 mm (3 in to 5 in).

• Stretch Capability:

  • Manual / Hand Grade: 100% to 150% manual stretch.

  • Machine / Power Grade: 200% to 350%+ guaranteed stretch via pre-stretch carriage rollers.

• Paper Core Dimensions:

  • Hand grade commonly uses 50 mm (2") or 76 mm (3") internal core diameter.

  • Machine rolls use standardized 76 mm (3") heavy cardboard cores.

• Weight Metrics:

  $$\text{Gross Weight} = \text{Net Film Weight} + \text{Paper Core Weight}$$

Classification by Application

• Manual / Hand Stretch Film: Lightweight rolls (typically 1.5 kg to 4.5 kg gross weight) designed for human operators using handheld dispensers or bare hands.

• Machine Stretch Film: Large rolls (typically 14 kg to 18 kg gross weight) built for turntable, rotary arm, or orbital wrapping machines.

• Pre-Stretched Film: Mechanically pre-expanded during manufacturing; requires minimal operator pulling tension and reduces overall packaging weight consumption.