Envelopes are tamper-resistant and are transparent on one side, enabling the recipient of the package to preview the mail contents before opening. Envelope’s white opaque side is for addresses and postage and can be custom printed in up to 6 colors. Envelope also has a leak-proof Lab Pak self-seal closure for added security.
Sealed Air Corporation: Security envelope
The ShurTuff® BP security envelope from Sealed Air (Saddle Brook, NJ) combines a transparent side with the durable, yet flexible, plastic exterior found on other ShurTuff mailers.
Apr 30th, 2002
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