Hot Sale White Black Transparent PP Dispenser Oil Cap For Plastic Cosmetic Bottle For Sale

Product Description : 

The making principle of a PP (polypropylene) dispenser oil cap involves several steps in the manufacturing process.

Material Selection: The first step in making a PP dispenser oil cap is selecting high-quality polypropylene resin suitable for the desired application. The resin should have the appropriate properties such as heat resistance, chemical resistance, and durability.

Injection Molding: Injection molding is the most common method used to manufacture PP dispenser oil caps. In this process, the polypropylene resin is melted and injected into a mold cavity under high pressure. The mold is designed to create the desired shape and features of the oil cap, including the dispensing spout, threads, and sealing surfaces.

Cooling and Solidification: After the molten resin is injected into the mold cavity, it is allowed to cool and solidify. Cooling may occur naturally or be accelerated using cooling systems within the mold. Proper cooling is essential to ensure that the molded part retains its shape and dimensional accuracy.

Mold Opening: Once the molded part has cooled and solidified, the mold opens, and the newly formed PP dispenser oil cap is ejected from the mold cavity. Depending on the complexity of the mold design, this step may be automated or performed manually.

Secondary Operations: After molding, the PP dispenser oil cap may undergo secondary operations to improve its appearance or functionality. This can include trimming excess flash or sprue from the molded part, adding surface finishes such as polishing or texturing, and inspecting for defects.

Quality Control: Throughout the manufacturing process, quality control measures are implemented to ensure that the PP dispenser oil caps meet the required specifications and standards. This may involve inspecting the molded parts for dimensional accuracy, visual defects, and functional performance.

Packaging and Distribution: Once the PP dispenser oil caps have passed quality control inspections, they are packaged and prepared for distribution to customers. Packaging may vary depending on the specific requirements of the customer or end-user, such as bulk packaging or individual packaging.

FAQ : 

1. Can it use for serum or Oil ?

Answer : yes

2. Can it fit to 2oz plastic bottle?

Answer: normally the 2oz bottle neck is 20/410; the cap 20/410 will fit the bottle

3. Can i have other color of cap ?

Answer: Sure, MOQ for customized color will be 50,000pcs