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How does the bottle cap stay sealed?

Update:24 Jun 2024

Gaskets are a key component in keeping bottle caps airtight. This pad is usually made of rubber or plastic and is located on the inside of the bottle cap or on the surface that is in direct contact with the bottle mouth. When the bottle cap is tightened, the sealing gasket is compressed and forms a tight fit with the bottle mouth. This fit not only prevents the leakage of air and liquid, but also effectively prevents external contaminants from entering the bottle, maintaining the freshness and quality of the product.

Thread design is also critical. The threads of the cap and bottle mouth must match exactly to ensure that the cap can be screwed on correctly and completely seal the bottle mouth. The design of the thread not only requires precise control of depth and angle, but also ensures that there are no gaps or looseness during tightening to ensure the reliability of the seal.

Material selection also has a significant impact on sealing performance. Bottle caps are usually made of high-density polyethylene (HDPE), polypropylene (PP) or metal and other high-temperature and corrosion-resistant materials. Not only do these materials withstand the effects of the outside environment, they also maintain their shape and performance across a wide range of temperatures, ensuring a long-lasting, stable seal.

Mechanical pressure also plays a key role in the sealing process. When the user tightens the bottle cap, the mechanical pressure exerted increases the contact force between the sealing gasket and the bottle mouth, further enhancing the sealing effect. Proper pressure ensures that the bottle cap will not accidentally loosen or leak during use, protecting the integrity and safety of the liquid or substance inside the bottle.

Golden EB-CAP-1A/B/C/D/E/F/G

Golden EB-CAP is a high-end product specially made for sprayer accessories by Yuyao Jinhai Glass And Plastic Manufacturing Plant. As a leading manufacturer in the industry, we are committed to providing high-quality components that meet strict quality standards. Golden EB-CAP is made of durable materials to ensure reliability and durability in many fields such as daily necessities, cosmetics, and medical treatment. We have 300 advanced polishing machines and 20 automatic polishing machines, with a daily output of more than 20 million glass balls and an annual production capacity of 6 billion. At the same time, we are equipped with 12 automatic wire drawing machines and 8 automatic punching machines. All products are approved by the national inspection department.