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100% virgin cotton preservation film, also referred to as cotton bale wrap film, is a polyethylene packaging material engineered for the cotton harvesting and storage supply chain. The film is applied by cotton picker machinery to form a protective wrap around round cotton bales directly in the field. It shields harvested cotton from moisture, dust, UV exposure, and pest contamination during field storage, transportation, and warehouse holding, preserving fiber grade and market value between harvest and processing.
The film is manufactured using 100% virgin polyethylene resin, which provides consistent tensile strength and uniform thickness across each roll. Virgin resin avoids the structural inconsistencies and potential contamination associated with recycled materials, which is critical for maintaining cotton purity during extended contact.
The five-layer co-extruded structure incorporates UV stabilizers and anti-aging additives into the film matrix. This construction enables the wrapped bales to remain in outdoor field storage for extended periods without significant film degradation from sun exposure. The film also includes antistatic properties to reduce dust accumulation on bale surfaces.
Parameter | Value |
Width | 106" / 2.7m |
Roll Diameter | 10" / 25cm |
Inner Core Length | 9'2" / 2.8m |
Roll Weight | 220lbs / 100kgs |
Pcs Per Roll | 24 wraps |
Wrap Length | 69' / 21m |
Thickness | 75 micron |
Pallet Numbers | 9 or 12 rolls |
Main Specifications | TAMA | ECOPACK | |
Strength | Portrait, MPa | 25.1 | 26.2 |
Strength | Horizontal, MPa | 27.1 | 27.7 |
Elongation at break | Portrait, % | 506 | 531 |
Elongation at break | Horizontal, % | 649 | 611 |
Right angle tear strength | Portrait, kN/m | 103 | 110 |
Right angle tear strength | Horizontal, kN/m | 124 | 118 |
Impact damage quality | g | 416 | 1232 |
Coefficient of friction (outside/inside) | Static friction | 0.356 | 0.479 |
Coefficient of friction (outside/inside) | Kinetic friction | 0.278 | 0.319 |
The film is engineered to run on all major round cotton picker models currently used in commercial cotton production. Compatible machines include John Deere CP7760, CP690, and CP770 series harvesters, as well as China Railway Construction Heavy Industry, Bo Shiran, Ward, and Swan brand cotton pickers. The roll dimensions and film release properties are calibrated to match the automated wrapping mechanisms on these machines, requiring no equipment modification for installation.
The primary application is in-field wrapping directly from the cotton picker. Wrapped bales can remain in the field for extended periods awaiting collection, protected from rain, dew, and ground moisture that would otherwise cause mold growth or fiber discoloration.
During highway transport and warehouse storage, the film maintains bale integrity and prevents contamination from dust, pests, and incidental moisture. The strong adhesion of the wrap keeps layers secured, minimizing bale shifting during loading and transit.
At cotton gins and processing facilities, the film peels away cleanly without leaving adhesive residue on the cotton fibers. This residue-free removal preserves cotton grade classification and eliminates the need for additional cleaning steps before processing.
Custom thickness and width specifications are available for operations with non-standard bale dimensions or specific durability requirements. Film adhesion properties can be adjusted to match the wrapping tension of different automated packaging machine models. For long-term commercial procurement partners, customized roll weights and pallet quantities can be arranged to align with inventory management systems and production scheduling.
No, the film is formulated to peel away cleanly from cotton bales without transferring adhesive or plastic residue. This residue-free removal is a standard performance characteristic of the product and is verified through processing trials at cotton gins.
The five-layer co-extruded UV-stabilized formulation is designed for multi-month outdoor field storage. Actual outdoor service life depends on regional UV intensity and weather conditions. The film maintains structural integrity through typical harvest-to-collection windows in major cotton-growing regions.
The standard 106-inch width and 75-micron thickness is compatible with John Deere CP series and most other major round bale cotton picker brands. Operations using less common harvester models should verify roll dimensions before placing volume orders.
Portrait strength refers to tensile force along the length of the film (machine direction), while horizontal strength measures force across the film width (transverse direction). Both values are tested and reported because cotton bale wrapping subjects the film to stress in both directions during the automated wrapping cycle.
