1. Sealing: The main purpose of the plastic bottle cap is to seal the plastic bottle to prevent the contents from spilling or leaking during storage or transportation. This is important for a variety of products such as beverages, detergents and personal care products.
2. Preservation: Plastic bottle caps also help preserve the contents of the bottle by creating an air-tight seal that keeps out air and moisture. This helps keep the contents fresh for longer.
3. Protection: Plastic bottle caps also protect the contents of the bottle from external elements such as dust, dirt, and bacteria.
4. Convenience: The plastic bottle cap provides a convenient way to open and close the bottle, making access to the contents easy. Different types of caps, such as screw caps and sports caps, offer varying degrees of convenience for different types of products.
5. Branding: Plastic bottle caps can be customized with branding and labels, making them an important part of product packaging and marketing.
6. Recycling: Plastic bottle caps can be recycled to make new plastic products, reducing waste and supporting sustainable development.
Overall, plastic caps play a vital role in product packaging, providing convenience, protection and preservation for various products.
1. Screw Caps: These are the most common type of plastic bottle caps that are threaded onto the neck of the bottle. They are easy to open and close and provide a secure seal that keeps the contents of the bottle fresh.
2. Snap-on caps: These caps are designed to snap onto the neck of the bottle and are usually used on disposable bottles. They are easy to use and provide a secure seal.
3. Sports caps: These caps are designed with a spout that can be opened and closed with one hand, which is very suitable for use during sports activities. They are commonly used in water bottles and other beverages.
4. Child Resistant Caps: Designed to be difficult for children to open, these caps help prevent accidental ingestion of harmful substances. They are commonly used in medicines and detergents.
5. Dispensing caps: These caps are designed to dispense a specific amount of the bottle contents, such as drops or sprays. They are commonly used in pharmaceuticals, detergents and personal care products.
6. Tamper Resistant Caps: These caps are designed to provide evidence that the bottle has been opened or tampered with, thereby providing additional security to the contents of the bottle. They are commonly used in medicines and food.
Overall, there are various types of plastic bottle caps to choose from, each designed to meet specific needs and requirements. The choice of closure depends on the type of product being packaged and the level of convenience, safety and protection required.
PET bottle caps come in a variety of sizes, usually determined by the diameter of the bottle neck. Some common sizes of plastic bottle caps include:
18/410: This size is typically used for small plastic bottles, such as those used for travel-sized personal care products.
20/410: This size is typically used for small to medium plastic bottles, such as those used for hand sanitizer or lotion.
24/410: This size is typically used for medium-sized plastic bottles, such as those used for shampoo or conditioner.
28/410: This size is typically used for larger plastic bottles, such as those used in detergents or personal care products.
38/400: This size is typically used for large plastic bottles, such as those used for laundry detergent or other household cleaning products.
Other sizes are also available, the size of the cap required depends on the size of the bottle used. It is important to match the size of the cap to the size of the neck of the bottle to ensure a proper fit and seal.