A child-resistant closure (CRC) is a specialized packaging mechanism that uses a complex opening design to make it significantly difficult for children under five years old to access the contents, while remaining manageable for adults.
Common Types and Mechanisms:
Child-resistant closures typically require two or more simultaneous or sequential actions to open, which challenges a young child's dexterity and problem-solving skills.
• Push-and-Turn Caps: This is the most common type, frequently found on pharmaceutical bottles. The user must push down on the cap while simultaneously twisting it counterclockwise. The outer cap free-spins unless depressed, allowing an inner set of teeth to engage with the container's neck threading.
• Squeeze-and-Turn Caps: These closures require the user to squeeze specific points on the cap sides while twisting. This action disengages an internal locking mechanism, allowing the cap to turn and open.
• Squeeze-and-Pull Caps: Found on certain household product containers, these involve squeezing the cap and pulling upwards on a tab to open.
Regulations and Testing
Child-resistant packaging is not considered "child-proof," as no package is impenetrable, but rather a safety measure to slow down access.
• Child Testing: Packages are tested with panels of children under five years old. To pass, a specified percentage of children must not be able to open the package within a set time frame.
• Adult Testing: The packaging must also be easily usable by adults, especially seniors (ages 50-70), to ensure it can be opened and properly reclosed without undue difficulty.
These standards ensure a balance between child safety and adult accessibility, reducing the risk of accidental poisoning from hazardous household substances and medications.