Cosmetic tubes are typically filled through their open ends using a manual, semi-automatic, or automated filling system, depending on the tube material and product formula. For flexible squeeze tubes, the product is usually inserted through the open bottom before the tube is sealed using heat, ultrasonic welding, or a suitable crimping method. Proper filling and sealing help ensure consistent product quantities and reliable packaging performance.
Different cosmetic products require different filling techniques. Creams, gels, balms, and liquid cosmetics vary in viscosity, making it important to choose equipment compatible with the formula and container. Understanding the available methods helps beauty brands select the right cosmetic tube packaging for their manufacturing process.
How are cosmetic squeeze tubes filled?
Most conventional plastic squeeze tubes are supplied with the shoulder and dispensing opening already formed, leaving the opposite end open for filling. During production, the tube is positioned with its opening facing upward so the formula can be deposited into the container.
The filling process generally follows these steps:
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Prepare the tubes: Inspect the containers and position them in the filling equipment.
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Measure the formula: Set the filling machine according to the required product quantity.
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Fill the container: Dispense the formula through the open end using a suitable nozzle.
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Seal the tube: Close the filled end using a method compatible with the material.
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Trim the seal: Remove excess material when required to create a consistent finish.
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Inspect the packaging: Check fill weight, sealing quality, and appearance.
This process is commonly used for facial cleansers, moisturizers, hand creams, and other skincare formulas packaged in flexible tubes.
Automated vs. manual tube filling
Automated filling machines are widely used for larger cosmetic production runs because they provide controlled dispensing and consistent processing. Depending on the equipment, these systems can fill, seal, trim, and mark tubes during a continuous manufacturing process.
Semi-automatic equipment may be suitable for smaller production quantities or formulas requiring additional handling. These machines often involve manual tube loading while automating the filling or sealing stages.
Manual filling can be used for development samples, laboratory evaluations, or certain small-scale applications. However, commercial production still requires suitable hygiene controls, accurate filling measurements, and validated packaging procedures.
The appropriate method depends on production volume, formula viscosity, equipment compatibility, and the required quality standards.
Filling different types of cosmetic tubes
Not every cosmetic tube uses the same filling method. The structure, material, and dispensing design determine how the formula enters the container and how the packaging is finished.
Plastic squeeze tubes are commonly filled through the open bottom before heat sealing. Polyethylene (PE) tubes are particularly suited to this process when the sealing equipment is configured for their material structure.
Laminated tubes may also be filled through an open end, but their sealing requirements depend on the laminate construction and compatible sealing layer.
Aluminum tubes are generally filled through the open end and closed using a folding or crimping process. Their metal structure requires different equipment from conventional plastic tubes.
Lip gloss and mascara containers typically use different filling and assembly methods because their structures include wiper inserts, applicator wands, and closures rather than a conventional sealed tube end.
How to fill lip balm and specialty cosmetic tubes
Lip balm packaging may use a filling process different from that of conventional squeeze tubes. Certain balm formulas are filled while warm and allowed to cool into their final consistency, provided the formula and packaging materials are suitable for the required temperature.
Filling temperature, product shrinkage, and cooling conditions must be evaluated during development. The finished product should meet its intended fill quantity and appearance requirements.
Specialty applicator tubes may require additional assembly steps or different filling nozzles. For instance, PP/PE round cosmetic tubes with flip-top caps are available in 50ml, 200ml, and 300ml capacities for skincare, beauty, and personal care applications.
The tube's construction and intended filling process should be confirmed before selecting equipment.
Choosing the correct tube capacity
Tube capacity is an important factor when preparing a cosmetic filling operation. Packaging suppliers may specify a nominal capacity in milliliters or grams, but the actual filling requirement depends on the formula's density and the available space inside the container.
A tube labeled 50ml should not automatically be filled with 50 grams of product. Brands need to consider the relationship between volume and weight, along with the space required for sealing.
The filling process should also account for potential changes in product consistency or volume under intended processing and storage conditions.
Proper fill-volume testing helps prevent overfilling, inconsistent packaging, and sealing problems.
Sealing methods and quality control
The sealing method depends primarily on the tube's material structure. Plastic tubes may use heat sealing or ultrasonic welding, while aluminum tubes commonly require folding and crimping.
The seal must be compatible with the tube material and withstand normal handling, storage, and transportation conditions. Insufficient sealing pressure or unsuitable processing settings can affect package integrity.
Quality checks should include fill quantity, seal appearance, leakage resistance, closure fit, and product compatibility. The finished packaging should also be evaluated under suitable stability and transportation conditions before commercial production.
Selecting the right cosmetic tube for filling
Choosing tube packaging involves balancing formula requirements, filling equipment, dispensing performance, and branding. Different structures offer options for creams, gels, balms, and other compatible products.
Brands should consider tube diameter, capacity, material, closure design, and the available filling and sealing methods. Confirming these details early in development helps reduce potential manufacturing issues.
Explore our collapsible tube solutions for plastic, laminated, aluminum, and customizable cosmetic packaging options.
Finding the right cosmetic tube packaging
Filling a cosmetic tube requires a suitable combination of packaging material, filling equipment, and sealing methods. Conventional squeeze tubes are typically filled through the open end, while specialty cosmetic containers may require different assembly and filling processes.
Selecting compatible packaging and performing appropriate filling trials helps brands confirm consistent product quantities, reliable sealing, and convenient dispensing.
For assistance selecting cosmetic tubes or developing packaging suited to your filling process, contact us.