Enterprise standard for aluminum-plastic composite caps for cosmetic bottles

Aluminum-plastic composite lids have gradually replaced aluminum lids with many advantages such as reliable sealing, safe and convenient opening, and beautiful appearance, and are widely used in the packaging of cosmetics, infusions, powder injections and oral liquids. At present, there are many specifications of aluminum-plastic composite caps for oral liquid bottles in China, and the colors are different. The State Food and Drug Administration formulated aluminum-plastic composite caps for cosmetic bottles, aluminum-plastic composite caps for infusion bottles, and other packaging materials that directly contact drugs. Container standards. However, there is no relevant national industry standard for the aluminum-plastic combination caps for oral liquid bottles that are used in a large amount on the market. Our company is a professional manufacturer of aluminum-plastic composite covers. In order to meet customer needs and ensure product quality, our company has formulated this standard. Based on product usage, we have used aluminum-plastic composite caps for cosmetic bottles and aluminum-plastic composite caps for infusion bottles and other packaging materials and container standards that directly contact medicines. This standard has been inspected by our company, and the results prove that the product quality can meet the requirements of the standard.


This standard applies to aluminum-plastic combination caps for oral liquid bottles



[Appearance] Take an appropriate amount of the bottle cap and visually inspect it in a bright natural light. It should be clean and free of residual lubricant, burrs, damage and injection molding flash. The plastic part should be completely integrated with the aluminum part. Aluminum cover: smooth surface, no spots, smooth edges and no burrs. Plastic sheet: bright color, no color difference, no flash, clear mark, no sink marks, etc.


[Mechanical properties of aluminum materials] * Should comply with the table requirements



Mechanical properties of table materials






Tensile strength Nmm




Elongation%






~




u0026#;.







【Protrusion】 Take an appropriate amount of the bottle cap and measure it with a vernier caliper to the nearest .cm. The convex edge of the aluminum part of the cap should not exceed %.


[Opening force] Removal force of plastic parts Take an appropriate amount of the bottle cap and test it on the tensile device, as shown in the figure, the test speed is mmminu0026#;mmmin, which should meet the requirements in the table


[Tear piece tearing force] Take an appropriate amount of the bottle cap, hang on the exposed tear piece with a hook, and test on the tensile device at a test speed of mmminu0026#;mmmin, until the bottle cap is completely torn off and should meet the requirements in the table Stipulate



Table Opening force






Nominal size


(mm)




Minimum removal force of plastic parts


(N)




Maximum removal force of plastic parts


(N)




Maximum tearing force


(N)





























[Quality of the opening] After the opening force test, remove an appropriate amount of the bottle cap from the plastic part, and visually observe that the opening on the aluminum part should not be damaged.


[Compatibility] Take an appropriate amount of bottle cap, cover it on a suitable bottle (including rubber stopper) with a nominal capacity of water, and seal the cap with a capping device. It should be properly matched.


【Sterilization resistance】Take an appropriate amount of the bottle cap and place it in a steam sterilizer after capping, ℃u0026#;℃min, including ℃u0026#;℃min. After the bottle cap is sterilized, the plastic parts can withstand the steam sterilization temperature of ℃ without deformation or discoloration, and there should be no obvious changes on the surface of the aluminum parts. There should be no breakage and abnormal deformation of the bottle cap.


[Coating firmness] Take an appropriate amount of the bottle cap (with coating on the outer surface), and after ℃u0026#;℃min, including ℃u0026#;℃min steam sterilization, remove the plastic parts, and immerse in %( VV) Wipe the surface with absorbent cotton in ethanol solution for a second, and then wipe the surface with absorbent cotton soaked in %(VV) isopropanol solution for a second, and the coating should be free of any abrasion.