Why do Tyvek® envelopes seal so tightly?
Because Tyvek® is extremely tough and durable, it is typically used for high-strength envelopes. The glues or adhesives used by envelope manufacturers are designed to seal tightly and aggressively to match the tear resistance of the Tyvek® material. However, Tyvek® envelopes are available with both an “Easy Open” feature and re-sealable closure. There are also Tamper-Evident Tyvek® envelopes that offer an extra measure of security for confidential documents; once the seal is broken, the word “OPENED” appears in the window, reassuring the recipient that the contents have not been compromised. For more information about the wide variety of Tyvek® envelopes that are available, review Products and Applications or contact us online.
