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Seams and Flaps

Envelope seams are typically permanently sealed for durability.

Seams and Flaps


Envelope seams are typically permanently sealed for durability

  • Center Seams – Most commonly used on coin and catalog envelopes.
  • Diagonal Seams – Used on commercials and pointed flap baronials.
  • Side Seams – Provide a large area for printing on the back, as in reverse face, collection and booklet envelopes.
  • Weld Seams – Eliminate die cutting and can be produced to permit insertion and trimming in a magazine. The envelope’s pocket size is determined by the distance between the internal gum lines.

Flaps


Bankers


Used on commercial style envelopes to provide additional sealing area.

Extension


Constructed without a flap, but rather with an extension of the face, neither gummed nor scored, to assist with material insertion.

Flip-Stik


Latex adhesive is applied on two flaps and separated until sealing.

Hub


Used on catalogs

Cheese Blades


Used on booklets and machine insertables.

Monarch


Used on #7-1/2 envelope flaps.

Pointed


Used on most baronials.

Round


Used on some small coin, drug and pay envelopes

Scalloped


Used on our Church Offering envelopes.

Square


Used on announcements and some booklets.

Standard Commercial Flap


Used on commercials

Wallet


Provide additional area for printing on both the back and seal flap; used on dual purpose, some commercials, collections, and order-form envelopes

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