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The quality requirements for airless bottles(1)

Views: 76     Author: Site Editor     Publish Time: 2021-12-13      Origin: Site Inquire

Airless bottle is one of the main types of packaging materials in cosmetics. The airless bottle commonly used in the market is composed of a cylindrical ellipsoidal container and a piston at the bottom. 

Its design principle is to use the contraction force of the spring to prevent air from entering the bottle, resulting in a vacuum state, and to use atmospheric pressure to push the piston at the bottom of the bottle forward. However, because the spring force and atmospheric pressure cannot give enough force, the piston cannot be too tightly attached to the bottle wall, otherwise the piston will not be able to move forward due to excessive resistance; on the contrary, if the piston is to move forward easily and easily leak material, Therefore, airless bottles have very high professional requirements for manufacturers.


airless bottle

1. Appearance quality requirements

1. Appearance: Airless bottles and lotion bottle caps should be complete, smooth, free from cracks, burrs, deformation, oil, shrinkage, and threads are clear and full; airless bottles and lotion bottles should be intact, stable, and smooth, and the mouth should be straight and smooth , The thread is full, no burrs, holes, no obvious scars, stains, deformation, no obvious misalignment of the clamping line. Transparent bottles should be clear and clear.

2. Cleanliness: clean inside and outside, no free pollution, no ink stain pollution.

3. Outer packaging: The packaging carton must not be dirty or damaged. The inside of the box should be lined with a plastic protective bag. The packaging of easily scratched bottles and caps should be based on avoiding scratches. Each box is packaged in a fixed quantity and sealed with tape in the shape of "I". Mixed packaging is not allowed. Each batch of shipments is accompanied by a factory inspection report, and the outer box identification. The product name, specification, quantity, production date, manufacturer, etc., must be clearly identifiable.

airless bottle

2. Surface treatment and graphic printing requirements

1. Color difference: uniform color, in line with the specified color or within the range of the color plate seal.

2. Surface adhesion: spray paint, electroplating, hot stamping, and printing on the appearance of the vacuum bottle and lotion bottle. Use 3M810 to test the tape cover printing and hot stamping (silver) parts, smooth them, make the cover part free of bubbles, stay for 1 minute, 45 °, then quickly tear off, the peeling area is less than 15%.

3. Printing and bronzing (silver): fonts and patterns should be correct, clear and uniform, without obvious skew, dislocation, or defect; bronzing (silver) should be complete, no missing hot, dislocation, no obvious overlap or jagged.

4. Wipe the printing part back and forth twice with gauze soaked in sterilizing alcohol, and there is no phenomenon of printing discoloration and bronzing (silver) falling off.

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