Aluminiumfolie mit Papierträger

Industrial-grade aluminum foil with paper baked is far more than a simple bonding of aluminum foil and paper. Es handelt sich um ein Strukturmaterial, das durch einen präzisen Verbundprozess komplementäre Eigenschaften der beiden Materialien erreicht. Es handelt sich außerdem um eine kundenspezifische Produktkategorie mit extrem hohen Wiederkaufraten von unseren exportierenden Baustoff- und Verpackungskunden.

Paper backed aluminum foil employs a three-layer composite structure: an aluminum foil functional layer + an adhesive layer + a paper-based support layer. Different material combinations can be tailored to specific needs in various scenarios. The aluminum foil layer typically uses 8011-O aluminium foil oder 1235 Aluminiumlegierung, with thicknesses ranging from 6μm to 50μm. Flexible selection is available based on barrier rating, with 10-20μm thickness being the mainstream standard. The paper base layer can be made of 30-200g/㎡ industrial kraft paper, glassine paper, or food-grade white cardboard, catering to different applications such as insulation lamination, release liner, and printing/packaging. Finished product widths range from 500-1600mm, supporting continuous supply of large rolls, with a maximum single roll length of 3000 Meter, allowing direct integration into customer automated production lines. Regarding core performance indicators, the composite peel strength at room temperature is ≥1.2N/15mm, und danach 20 cycles of high and low temperatures from -20℃ to 80℃, there is no delamination or warping. The food-grade version fully complies with EU 1935/2004 and FDA food contact standards, posing no risk of harmful substance migration.

The technical hurdle of aluminum-paper lamination lies precisely in the three seemingly basic requirements of “no delamination, no wrinkling, and no deformation.” Our team optimized the process step by step: Zuerst, we switched to a weather-resistant water-based polyurethane adhesive, precisely controlling the adhesive application rate at 3-5 g/m², ensuring interface adhesion while preventing adhesive seepage through the paper; zweite, we optimized the three-stage gradient drying curve, stabilizing the finished product’s moisture content within the 6%-8% range to offset the temperature and humidity fluctuations during ocean shipping; dritte, we adopted full-width constant tension composite control, with a lateral tension difference ≤2N and a finished product straightness error of less than 0.5%, completely resolving the edge curling problem during subsequent slitting and construction. For food-grade customers, we use a solvent-free composite process, with a finished product solvent residue of <0.5 mg/m², far below the internationally accepted limit.

The core value of this composite structure is to compensate for the application shortcomings of pure aluminum foil with a low-cost paper base. Compared to pure aluminum foil, paper backing significantly improves material stiffness and tear resistance, making it less prone to wrinkling and damage during on-site construction and machining. Außerdem, multi-color printing can be directly applied to the paper backing, eliminating the need for separate labeling. Compared to pure paper, the aluminum foil layer achieves 100% light blocking and near-zero moisture transmittance, is grease-resistant and puncture-resistant, extending the effective lifespan of packaging and linings by 3-5 mal. Zur Zeit, our aluminum foil paper backing products are widely used in various fields: aluminum foil kraft paper is the standard lining material for building insulation, with a solar reflectivity of ≥85%, making it a core procurement item for building material customers in the Middle East and Southeast Asia; food-grade aluminum foil is often used for the inner packaging of butter, Käse, and tea, offering significant light-blocking, Die feuchtigkeitsbeständigen, and aroma-preserving effects; high-grammage paper-backed aluminum foil is used for disposable lunchbox liners and pharmaceutical outer packaging, balancing stiffness and barrier properties.

Haomei Aluminum currently support customized production, matching material combinations to customer-specific end-use scenarios. All export products use moisture-proof sealed packaging, suitable for long-haul ocean shipping. Rather than selling standardized products, we prefer to fine-tune parameters based on our customers’ processing equipment and local environment—this is the core reason why we have accumulated a large number of long-term customers; only suitable parameters can allow materials to achieve their optimal performance.