The weight of the paper used to construct the envelope is definitely an important consideration. Heavy duty envelopes are used for packaging and mailing items which would tear through a normal weight envelope. Thats why at AOS Online our 16x12 envelopes can be purchased in a 110 gram weight through to a 125 gsm. A tear resistant basket weave envelope is perfect to withstand any postal service rough handling. It will help to resist stress damage on the envelope created by the contents as well as shipping abuses. The basket weave construction of our 16x12 envelopes makes the envelope more durable because the paper is thicker and more difficult to tear. The basket weave uses more than one layer of paper pulp, woven in more than one direction making it resistant to tearing.
The closure of the envelope is important also. Most 16x12 envelopes must have the seal moistened and closed with a slight pressure. If multiple envelopes are being sealed, the time spent to moisten and stick envelope flaps closed may be too lengthy. Using a peel and seal envelope quickly provides a closed flap that is permanently sealed and reduces the time spent closing the envelope.
In you have any further questions about 16x12 envelopes please email sales@aosonline.co.uk.