Machine tubes aluminium

An aluminum tube filling machine is a tube filling and sealing machine specifically designed to fill and tail-seal collapsible aluminium tubes. The key distinguishing feature is the fold-crimp sealing mechanism: since aluminium is a metal, it cannot be heat-sealed — instead, the open aluminium tail is mechanically folded and crimped (compressed) to form a flat metal seal. Aluminum tube filling machines are used for: pharmaceutical applications — topical ointments, eye creams, wound gels, antiseptic creams, hormone creams; cosmetic applications — hair colour cream, premium face cream, deodorant paste, sunscreen (high-end); food applications — tomato paste, anchovy paste, fish paste, cheese paste, specialty condiments; industrial applications — contact adhesives, soldering flux, gasket sealants, anaerobic adhesive (small packs). Aluminium tube benefits: excellent barrier properties against moisture, oxygen, light and microbes; completely impermeable (unlike plastic or laminate); non-reactive inner surface when lacquered; prestige presentation for pharmaceutical and premium cosmetic brands.

Fold-crimp sealing is the standard method for permanently sealing the open tail of a collapsible aluminium tube. Process: (1) After filling, the tube is positioned at the crimp station with the open tail facing upward. (2) The crimping head descends and grips the flat tail between two crimping jaws. (3) The crimp wheel rolls across the tail, applying controlled pressure to fold the aluminium and create a tight mechanical seal. Types of crimp: single-fold crimp — the tail is folded once, creating a single flat fold with one crease. Standard for toothpaste, food and industrial tubes. Double-fold crimp — the tail is folded twice, creating a more compact, aesthetically attractive seal. Standard for pharmaceutical and high-end cosmetic tubes (provides better barrier and more professional appearance). Triple-fold crimp — used in some pharmaceutical applications for maximum seal security. Crimp quality parameters: crimp width (typically 8–12mm), crimp depth (compression ratio), crimp symmetry and crimp integrity (no open micro-cracks). Good crimping produces a tight seal that survives: product pressure (squeeze force), drop test from 1.5m, temperature cycling (−20°C to +50°C). Crimp parameters are set per tube material grade (soft Al alloy 1100 vs harder alloys), wall thickness and product pressure requirements.

Aluminum tubes are used for products requiring maximum barrier protection and premium presentation: pharmaceutical products — topical ointment (hydrocortisone, antifungal, antibiotic, steroid), eye ointment (sterile tetracycline, chloramphenicol), wound cream, burn gel, ear cream, hair removal cream, anaesthetic gel; cosmetic products — hair colour cream and hair dye, premium face cream and eye cream, barrier cream, sunscreen (SPF 50+), scar cream, stretch mark cream, deodorant paste; food products — tomato paste, anchovy paste, fish roe paste, caviar paste, truffle paste, miso paste (premium), cheese paste, horseradish; industrial products — contact adhesive, epoxy paste, anaerobic thread sealant, soldering flux paste, gasket maker, metal-filled paste. Key selection criteria for aluminum tube packaging: product is sensitive to oxygen, light or moisture; product has a pH below 5 or above 9 (requires acid/alkali-resistant lacquered inner surface); product requires a premium rigid-feeling tube; product contains active ingredients that react with plastic.

Aluminum tube orientation is the process of rotating the tube to align the printed or embossed decoration before filling and crimping. Why orientation is important for aluminum tubes: (1) Print alignment — the brand logo, product name, ingredient list and barcode must always face the same direction on finished tubes. (2) Crimp alignment — the fold-crimp tail must be applied perpendicular to the tube seam and/or decoration. For pharmaceutical tubes, the seam is typically positioned at the rear of the tube to keep it away from the label area. (3) Emboss alignment — premium aluminum tubes often have embossed (raised) decoration that must align with the label position. How it works: (1) The empty aluminium tube is loaded onto a mandrel on the indexing turntable. (2) A retroreflective photo-sensor detects a reference mark as the tube rotates — this mark may be the tube seam, a printed registration mark, or a printed band. (3) When the mark is detected in the reference position, the servo motor stops rotation. Position accuracy: ±1°–±2°, sufficient for decoration alignment on pharmaceutical and cosmetic tubes. Orientation is not required for unlabelled or plain-finish industrial tubes.

Aluminum tube filling machines handle products from thin to extremely high viscosity — the same product range as other tube fillers, since the filling system (piston pump) is the same. Viscosity range: thin lotions and gels 500–5,000 cP: standard piston runs at full speed. Standard face creams and hair colour creams 5,000–30,000 cP: servo piston at standard speed, standard nozzle bore. Pharmaceutical ointments and thick creams 10,000–100,000 cP: larger piston bore, wider nozzle, slower fill speed. Toothpaste and dental paste 50,000–500,000 cP: large bore piston, wide nozzle, heated jacketed hopper, slow fill cycle. High-viscosity adhesives and pastes 100,000–1,000,000+ cP: special large-bore piston, heated jacketed hopper and nozzle. An important distinction for aluminum tubes: very thick products (toothpaste, dense adhesives) require the aluminum tube to be filled from the open tail end with the cap already on the tube head (the tube head with cap is placed face-down). This ensures the product fills from the tube head end without air pockets.

Aluminum tube filling machine investment: semi-automatic aluminum tube filler + manual crimp sealer (10–30 tubes/min): $8,000–$20,000 USD. Automatic single-head aluminum tube filling and sealing machine with fold-crimp (20–50 tubes/min): $20,000–$55,000 USD. Automatic aluminum tube filling machine with double-fold crimp (30–80 tubes/min): $35,000–$80,000 USD. High-speed aluminum tube filling machine (60–120 tubes/min): $60,000–$130,000 USD. GMP pharmaceutical aluminum tube filler with validation package: $80,000–$200,000 USD. Complete aluminum tube filling line (filler, crimper, coder, checkweigher, tube orientor, cartoner): $150,000–$400,000 USD. Pharmaceutical grade machines cost more due to SUS316L, validation documentation and cleanroom compatibility. Contact us with tube format, product viscosity and production speed for a precise quotation.