Self-sealing envelope
AssigneeEquitable Bag Co., Inc.
InventorLeonard E. Canno
Life of this patent
Estimating the term…
Abstract
A self-sealing envelope in which the opening is defined between a taller flap and a shorter flap and the height of the shorter flap is such that when a protective peal-off tape is removed from a band of pressure sensitive material extending across the taller flap, the upper end of the shorter flap adheres to the lower region of the pressure sensitive band to seal the closure, leaving exposed the upper region of the adhesive band so that when the upper end of the envelope is folded down above the contents, the exposed adhesive band will adhere to the surface of the envelope across the width of the taller flap.
Claims12
A self-sealing closure for an envelope comprising a pair of flaps defining between them an opening for placing the contents within the envelope, one of the flaps being taller and the other being shorter, a band of pressure sensitive adhesive material extending across the taller flap and a protective peel-off tape covering the adhesive material, the height of the shorter flap being such that when the protective tape is removed and the shorter flap is interfaced with the taller flap, the upper end of the shorter flap adheres to the lower region of the pressure sensitive adhesive band to seal the closure, leaving exposed the upper region of the adhesive band so that, when the upper end of the envelope is folded down above the contents, the exposed adhesive band will adhere to the surface of the envelope across the width of the taller flap.
A self-sealing envelope comprising a pair of panels joined together along the bottom and sides to define an envelope which is open at the top, a taller flap at the upper end of one of the panels, a band of pressure-sensitive adhesive material extending across the flap from one side to the other, a protective peel-off tape covering the adhesive material, and a shorter flap at the upper end of the other panel, the height of the shorter flap being such that when the protective tape is removed and the upper end of the shorter flap is interfaced with the taller flap, the upper end of the shorter flap adheres to the lower region of the pressure sensitive adhesive band, leaving exposed the upper region of the adhesive band so that the upper end of the envelope can be folded down above the contents thereof to adhere the exposed strip of adhesive to the panel having the shorter flap, the exposed adhesive strip adhering the flap to the adjacent panel across the width of the envelope, thereby providing an effectively sealed envelope.
Dependencies are inferred from the claim text.