Padded envelope

Uses

Mailing envelopes and small packages may receive as many as 27 handlings during shipment with the maximum drop height of 1.2 m. The contents of the mailing envelopes often need protection from shock and vibration damage. Cushioning or padding can be built into the mailing envelope to help protect the contents.

Construction

Several constructions are available.

Exterior

The exterior envelope can be made of a heavy paper, paperboard, corrugated fiberboard or plastic film.

Padding

The padding material can be recycled newsprint, foam, bubble wrap, or other cushioning materials.

Closure

Many mailers have an integral flap that has a pressure-sensitive adhesive, a gummed (water-activated) adhesive, or tape to allow easy and secure closure.

Environmental impact

A Life Cycle Analysis was conducted to compare a Kraft paper mailer with newsprint padding to a LDPE plastic mailer with air bubble padding. Both had advantages and disadvantages; overall, the Kraft padded mailer had a higher overall environmental impact compared to the LDPE bubble mailer. The study recommended use of future products with lower mass and which use renewable resources.

References

Citations

Bibliography

• Soroka, W, "Fundamentals of Packaging Technology", IoPP, 2002,
• Yam, K. L., "Encyclopedia of Packaging Technology", John Wiley & Sons, 2009,

References

1. (2010). "Measurement and Analysis of 'Small' Packages in Next-day Air Shipments". Packaging Technology and Science.
2. "Method for making padded envelope".
3. "Method and apparatus for positioning, inflating, and sealing a mailer comprising an inner inflatable liner".
4. "Multilayer bag".
5. "Zip wrap mailers".
6. Pilfold, K. (2013). "A Comparative Life Cycle Assessment of Protective Mailers in the Postal Industry". University of Calgary.