What Is a Laminated Tube? Materials, Construction, and Uses

Laminated Tube A flexible tube made from layered materials to provide barrier protection for oral care, cosmetics, and pharmaceuticals.

Laminated tubes are flexible packaging tubes constructed from multiple layers of polymer films, aluminium foil (in some designs), and adhesives. These layers are laminated together to combine mechanical strength, printability, chemical resistance, and gas or moisture barrier performance in a single, squeezable form. Common end uses include toothpaste and other oral care pastes, hand creams and salves, and topical pharmaceutical formulations where product protection and shelf life are important.

Construction And Typical Materials

Manufacturers build laminated tubes by bonding discrete layers using solvent-based, solventless, or extrusion lamination techniques. Typical layer functions and materials include an outer print layer (oriented PET or CPP) for graphics and abrasion resistance; one or more structural layers (biaxially oriented polypropylene — BOPP — or polyethylene terephthalate — PET) for tensile strength; a barrier layer (aluminium foil or EVOH — ethylene vinyl alcohol) to stop oxygen and vapour ingress; and an inner sealant layer (polyethylene — PE, low-density polyethylene — LDPE, or polypropylene — PP) compatible with the tube's contents.

Alloyed or metallised films sometimes replace full foil when reduced cost or improved machinability is needed. For pharmaceutical-grade tubes, barrier stacks often prioritise EVOH or full foil plus high-integrity adhesives to meet low-permeation requirements.

How Lamination Methods Change Properties

Lamination method affects barrier, flexibility, and recyclability. Solvent lamination creates strong bonds and is common for high-barrier constructions, but requires solvent handling controls. Solventless lamination reduces VOC emissions and is preferred where environmental controls are strict. Extrusion lamination (coating molten polymer between substrates) provides excellent sealant uniformity and can simplify line changeovers. Each method influences the tube’s ability to be formed, printed, and processed on filling lines.

Why Barrier Performance Matters For These Sectors

Barrier properties are critical where product efficacy, stability, or taste can be degraded by oxygen, moisture, or light. In oral care, peroxide-based whiteners and enzymes need oxygen protection to preserve activity. Cosmetic creams with unsaturated oils are sensitive to oxidation and need moisture and oxygen barriers to limit rancidity. Certain topical pharmaceuticals must be protected from moisture and light to maintain potency and comply with shelf-life claims. Laminated tubes allow formulators to tailor barrier performance without switching to rigid containers.

Common Applications And Formats

• Oral Care: Toothpastes, tooth gels, and topical oral treatments packaged in single- or multi-layer laminated tubes to protect active ingredients and enable high-resolution printing for brand messaging.
• Cosmetics: Hand creams, foundation samples, serums and masks packaged in laminated tubes that balance soft-squeeze feel with premium appearance and barrier protection.
• Pharmaceuticals: Dermatological ointments, gels, and topical medications where regulated container-closure integrity and low permeation are required.

Regulatory And Cleanliness Considerations

Products for oral care and pharmaceuticals must meet stricter regulatory expectations. Material selection should consider extractables and leachables, compliance with food contact regulations (if applicable), and pharmacopeial requirements for container-closure systems. Manufacturers commonly validate laminate constructions and provide certificates of compliance for specific markets. Sterility is not typical for toothpaste tubes, but contamination controls in manufacturing and appropriate sealing integrity are essential for medicated products.

How Laminated Tubes Are Filled And Finished

Filling lines vary by product viscosity and regulatory class. Typical steps include tube forming or pre-form delivery, dosing and filling, crimping or sealing the tail, and capping or applying nozzle closures. Some laminated tubes are produced as pre-formed seamless tubes (made from laminates and then necked and sealed) while others are extruded-coated then welded. Compatibility with high-speed filling lines is a key selection criterion; some laminates require specialized crimping dies or welding technologies to avoid delamination.

Selection Tips For Packagers

• Barrier Requirement: Choose foil or EVOH layers when oxygen or moisture sensitivity is high; metallised films may suffice for moderate protection.
• Sealant Compatibility: Confirm sealant layer compatibility with product chemistry and filling temperature to avoid sealing failures.
• Print And Brand Needs: Outer film selection should balance graphic quality and scuff resistance for retail display.
• Environmental Factors: Discuss recyclability goals with your supplier; multi-material laminates are harder to recycle than mono-material alternatives.

Practical Example

A mid-size oral care brand reformulates a whitening toothpaste that loses potency after 12 months. The supplier switches from a single-layer PE tube to a five-layer construction with an EVOH barrier and a PE inner sealant. The new laminate reduces oxygen ingress and preserves peroxide activity across the stated shelf life while maintaining the tube’s squeeze behavior and keeping printing quality for retail branding.

In short, the Laminated Tube provides a flexible, customizable packaging solution that combines barrier protection, printability, and mechanical strength for oral care, cosmetics, and pharmaceutical products. Selecting the correct layer stack and lamination method aligns packaging performance with product stability and regulatory requirements.