Envelope

An envelope is a flat, usually rectangular or square paper container used to enclose and protect letters, documents, or small items during mailing or storage.

Basic Description:

  • Material: Typically made from paper, but can also be made of plastic, fabric, or other materials for special uses.

  • Structure:

    • Has a main body that holds the contents.

    • Includes a seal flap, which is folded over the opening and sealed using glue, adhesive, or other closures.

    • Often includes pre-printed areas for the sender’s and recipient’s addresses, postage, and sometimes branding or logos.



      Common Types:

      • Commercial/business envelopes: Long and narrow (e.g. #10 size), used for invoices, letters.

      • Catalog envelopes: Larger, with the flap on the short side, used for catalogs, documents, or reports.

      • Window envelopes: Have a transparent window to display the address printed on the contents.

      • Padded or bubble mailers: Provide extra protection for delicate items.

      • Invitation envelopes: Decorative or formal, used for invitations or greeting cards.