China Food Packaging Aluminum-plastic Laminated Film Series Manufacturers Suppliers Factory

Product Overview

This laminated film series utilizes a soft aluminum foil core bonded with high-performance polymer layers, functioning as an impermeable barrier to extend shelf life for oxygen- and moisture-sensitive goods.

Web Form: Slit-to-width continuous rollstock.

Core Specifications: 3-inch (76mm) or 6-inch (152mm) inner diameter fiber or plastic cores.

Primary Conversion: Vertical form-fill-seal, horizontal form-fill-seal, quad-seal bags, and pillow pouches.

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Material Structure & Construction

Engineered in 3-layer, 4-layer, or co-extruded variants depending on mechanical load and sterilization requirements.

Standard Laminate Sequence:

Outer Layer: PET or NY (Print and abrasion face)
Tie Layer: Adhesive or extrusion lamination
Barrier Layer: Soft aluminum foil (Alu)
Tie Layer: Adhesive or extrusion lamination
Inner Layer: PE or CPP (Heat-sealable sealant face)
Common Configurations:
PET / AL / PE: Standard configuration for dry foods, powders, and general snacks requiring high rigidity and moisture defense.
NY / AL / CPP: High-impact configuration optimized for heavy-fill, drop-resistant, or sharp-edge product applications.
PET / NY / AL / RCPP: High-temperature retort configuration engineered to withstand thermal sterilization processes up to 135 deg C.

Key Packaging Properties

Gas and Moisture Transmission

Oxygen Transmission Rate (OTR): Less than or equal to 0.1 cm3/(m2 x 24h x 0.1MPa)
Water Vapor Transmission Rate (WVTR): Less than or equal to 0.1 g/(m2 x 24h)

Light Barrier: 100 percent block of UV and visible spectrum to protect photosensitive oils and vitamins.

Interlayer Bond Strength: Greater than or equal to 4.0 N/15mm (Resists delamination under thermal and mechanical stress).

Heat Seal Strength: Greater than or equal to 35 N/15mm (Guarantees hermetic package integrity under drop impact).

Friction Control: Tuned kinetic Coefficient of Friction (COF 0.2 to 0.3) for stable web feeding on high-speed packaging lines.

Applications

Coffee and Tea

Roasted bean and ground coffee rollstock with degassing valve compatibility; prevents volatile aroma loss and lipid oxidation.

Powders and Granules

Infant formula, nutritional supplements, milk powder, and seasoning mixes.

Pet Nutrition

Dry kibble, vitamin supplements, and moist pet food pouches.

Retort Foods

Ready-to-eat meals, soups, and gravies processed via thermal sterilization.

Technical Specifications

Parameter	Test Method	Nominal Value Range
Total Thickness	ASTM D645	70 um to 150 um (Plus or minus 5 percent)
Grammage	ISO 536	85 g/m2 to 180 g/m2
Al Foil Thickness	ASTM B209	7 um, 9 um, 12 um
Seal Initiation Temp (SIT)	ASTM F2029	110 deg C to 140 deg C
Puncture Resistance	ASTM F1306	Greater than or equal to 45 N
Solvent Retention	ISO 12625	Total less than or equal to 5.0 mg/m2 (Individual less than or equal to 1.0 mg/m2)

Printing and Converting Options

Printing Technology

Rotogravure printing up to 10 colors utilizing toluene-free, food-grade solvent-based inks. Reverse printing locks pigments beneath the outer web to prevent scuffing.

Food-Grade Aluminum Foil Lids for Yogurt Plastic Cup

Surface Treatments

Matte finish lacquer, high-gloss varnish, tactile paper-touch coatings, and register-controlled matte/gloss effects.

Slitting Tolerances

Precision slitting width tolerance within Plus or minus 0.5 mm with clean, dust-free edges to eliminate web breaks.

Manufacturing and Quality Control

Cleanroom Production: Lamination and slitting executed in ISO Class 8 controlled environments.

Curing Protocols: Solventless and solvent-based laminates undergo monitored thermal curing chambers for 48 to 72 hours to ensure complete primary aromatic amine dissipation.

Inline Inspection: 100 percent automated optical inspection integrated into lines to detect pinholes, spots, creases, and print misregistration.

Laboratory Testing: Lot release tied to strict physical testing including seal strength, bond strength, gas permeability, and residual solvents. Accompanied by a Certificate of Analysis.

Regulatory Compliance: Raw materials comply with FDA 21 CFR 177.1520 and EU Regulation 10/2011 for food-contact materials.

Customization and OEM

Barrier Customization

Tailored structure designs matched to exact shelf-life, filling temperature, and sterilization profiles.

Dimensional Ranges

Roll widths from 100 mm to 1600 mm; master roll lengths up to 6000 meters.

Technical Documentation

Full Technical Data Sheets, migration test reports, and regulatory compliance letters provided for QA verification.

Selection Guide

Select PET/AL/PE for dry powders, snacks, or coffee beans requiring standard high-barrier performance on high-speed packaging machinery.

Select NY/AL/CPP for heavy-fill items, sharp-edge products, or drop-test demanding distribution channels.

Select PET/NY/AL/RCPP if packaging requires post-packaging thermal retort sterilization up to 135 deg C.

FAQ

Q: How do you prevent aluminum foil pinholes from compromising barrier performance?

A: We source pinhole-controlled soft aluminum foil (alloy 8011-O) from audited rolling mills. Master rolls undergo optical pinhole screening, and the multi-layer lamination structure ensures structural overlap so that micro-defects never align into a continuous permeation pathway.

Q: What measures control solvent retention to ensure food safety compliance?

A: Production utilizes low-residual adhesives and solventless systems. Rolls undergo accelerated thermal curing in dedicated chambers to drive off residual solvents. Gas chromatography testing verifies that total residual solvents remain below 5.0 mg/m2 prior to shipment, fully meeting FDA and EU standards.

Q: Will this film run consistently on high-speed vertical form-fill-seal lines without jamming?

A: Yes. The outer web provides high tensile rigidity while additive packages maintain a steady kinetic COF between 0.2 and 0.3. This prevents film drift, sticking, or jaw-fouling at operating speeds up to 120 packs per minute.

Q: How is delamination avoided during thermal processing or long-term ambient storage?

A: High-performance polyurethane adhesives combined with corona-treated substrates achieve an interlaminar bond strength exceeding 4.0 N/15mm. Retort grades incorporate cross-linked structural adhesives designed to withstand steam sterilization without structural failure.

Q: What are the typical MOQ and lead times for custom-printed rollstock?

A: The standard MOQ for custom printed rollstock ranges from 3,000 m2 to 5,000 m2 per SKU, depending on width and cylinder setup. Production lead time is 15 to 20 days following cylinder engraving and artwork sign-off.

Q: What documentation accompanies shipments for QA audits?

A: Every delivery includes a lot-specific Certificate of Analysis detailing physical parameters such as thickness, bond strength, seal strength, and residual solvent levels. FDA and EU migration test documents are provided upon request.

As one of the leading food packaging aluminum-plastic laminated film series manufacturers and suppliers in China, we also support customized service. Welcome to wholesale high quality food packaging aluminum-plastic laminated film series at competitive price from our factory. If you have any enquiry about quotation, please feel free to email us.

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