The Disc Must Hold Position
A solid balm should rise when the customer presses the bottom of its tube and stay in place during application. If the moving disc offers too little resistance, the product may slide back into the package when pressed against the skin. Too much resistance makes the disc difficult to advance.
That balance is the central mechanical requirement of Custom Push-Up Tubes.
These cylindrical paperboard packages use a movable bottom disc to advance a solid product without a conventional rotating mechanism. They can suit compatible lip balms, natural deodorants, solid moisturizers, grooming balms and other stick-form personal care products.
The tube's body, internal liner, moving disc and cap must function together. Changing the product's formula or diameter can affect how the mechanism behaves even when the exterior design remains unchanged.
Disc Friction
The disc needs enough resistance to support the product during use while remaining movable under deliberate finger pressure.
Its fit depends on the internal diameter, disc construction, liner and dimensional tolerances.
An excessively tight disc can make dispensing difficult or deform the product when the customer applies force. A loose disc may move unintentionally during handling or fail to support the stick during application.
The desired movement should be established using the actual filled tube rather than an empty paperboard sample.
Product Retention
The solid product must remain appropriately supported as the disc moves.
A firm stick may behave differently from a softer balm, particularly when the product is exposed to changes in temperature.
The formulation's adhesion to the liner, its internal strength and its connection to the moving base can all affect dispensing.
Increasing disc friction cannot correct every retention problem.
The formula and packaging construction need to be compatible so the product advances without breaking, slipping or becoming unnecessarily difficult to use.















