28mm Child Resistant Cap for Glass Bottles: Material, Size, Function, and Application

The 28mm child resistant cap is an essential component in modern packaging, designed to enhance safety, especially for products stored in glass bottles. This blog explores the materials, dimensions, functionality, and common applications of these caps to better understand their role in protecting consumers and meeting industry standards.

28mm child resistant cap for liquid

Material

The 28mm medicine cap is typically made from durable polypropylene (PP) or high-density polyethylene (HDPE), both known for their toughness, chemical resistance, and lightweight properties. These materials are:

Non-toxic and BPA-free, ensuring the safety of food, pharmaceuticals, and cosmetic products.

Resistant to chemicals and moisture, preventing degradation when in contact with liquids like medications or cleaning agents.

Recyclable, supporting eco-friendly packaging solutions.

Some caps also feature silicone or foam liners inside to improve the seal, ensuring leak-proof performance.

Size

Neck Diameter: The cap is designed to fit glass bottles with a 28mm neck opening.

Standard Height: Depending on the design, the cap height can vary slightly but is optimized to provide an ergonomic grip for adults.

Threaded Design: The internal threading aligns perfectly with the bottle’s neck to ensure a secure fit.

The 28mm size is a universal standard used across various industries, making it a versatile choice for manufacturers.

Function

The primary purpose of a child resistant cap is preventing accidental access to the contents inside the bottle. It works on a push-and-turn mechanism, which requires two simultaneous actions:

Pushing down to release the locking mechanism

Turning the cap to unscrew it

This design is difficult for children to operate, reducing the risk of them accessing potentially harmful substances. At the same time, it remains user-friendly for adults and ensures quick access when needed.

In addition to child safety, the cap also provides:

Leak-proof sealing, preventing spills during transport or storage

Tamper evidence, with some designs including a ring or seal that breaks upon first opening

Application

The 28mm child safety cap is widely used across several industries:

HDPE syrup bottle with crc cap

1. Pharmaceuticals

Used for liquid medications, syrups, and tinctures stored in glass bottles to prevent children from accidental ingestion.

Ensures compliance with child-resistant packaging regulations in regions such as the U.S. and EU.

2. Household Chemicals

Ideal for products like cleaning solutions, disinfectants, and pesticides, which must be kept out of children's reach.

3. Personal Care and Cosmetics

Applied in products like essential oils, serums, and lotions to maintain safety and avoid misuse by children.

4. Food and Beverage

Used for certain specialty food items, such as dietary supplements and flavor extracts, which require both preservation and child-resistant packaging.

Conclusion

The 28mm child resistant cap for glass bottles plays a crucial role in preventing accidents while ensuring product integrity. Made from durable, chemical-resistant materials, it offers reliable sealing and child-proofing functionality. Its push-and-turn mechanism makes it challenging for children to open but easy for adults to operate, ensuring both safety and convenience.

With applications in pharmaceuticals, household chemicals, cosmetics, and specialty food items, the 28mm child resistant cap is a versatile and essential solution for many industries. As consumer demand for safer and more secure packaging grows, these caps provide peace of mind for manufacturers and families alike.