Biodegradable LPDE bottle caps - Norland International Inc.

Nov. 17, 2010
The caps for 5-gal water bottles degrade in 5 to 10 yr.

Earth Cap injection-molded oxo-biodegradable 55-mm-diameter LDPE caps for 5-gal water bottles degrade in 5- 10 yr. The caps contain biodegradable non-adhesive tamper-evident labels and 2-mm foam seals. They have a 2-yr shelf life and are FDA compliant.
An additive blended into the LDPE with a mixing and drying system lets the cap embrittle and break down when disposed of and exposed to UV light, heat, and moisture. Chemically aided breakdown lowers molecular weight until the material becomes available can be digested by bacteria. The additive is compatible with recycling systems.

Norland International Inc., 2001 SW 6th St., Lincoln, NE 68522, (402) 441-3737,

About the Author

Jessica Shapiro

Jessica serves as Associate Editor - 3 years service, M.S. Mechanical Engineering, Drexel University.

Work experience: Materials engineer, The Boeing Company; Primary editor for mechanical and fastening & joining.

Sponsored Recommendations

Pumps Push the Boundaries of Low Temperature Technology

June 14, 2024
As an integral part of cryotechnology, KNF pumps facilitate scientific advances in cryostats, allowing them to push temperature boundaries and approach absolute zero.

The entire spectrum of drive technology

June 5, 2024
Read exciting stories about all aspects of maxon drive technology in our magazine.


May 15, 2024
Production equipment is expensive and needs to be protected against input abnormalities such as voltage, current, frequency, and phase to stay online and in operation for the ...

Solenoid Valve Mechanics: Understanding Force Balance Equations

May 13, 2024
When evaluating a solenoid valve for a particular application, it is important to ensure that the valve can both remain in state and transition between its de-energized and fully...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!