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US 3,970,242 AGranted
Hosiery envelope
AssigneeRexham Corporation
InventorsClifton S. Swafford, Thurman T. Caldwell, William J. Dungan
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a stocking envelope having an improved sealing arrangement provided by a pair of stripes of "bimodal adhesive" laid down wet during initial envelope formation to join the glue flaps of the envelope to associated major envelope panels. Subsequently, portions of the dried stripes of "bimodal adhesive" are reactivated by heat during envelope closing to seal an overlying closing flap to a major panel through special apertures formed in the glue flaps.
Claims6
An improved envelope construction, comprising
- a. juxtaposed parallel front and rear wall panels;
- b. means joining said front and rear walls at bottom edges thereof;
- c. a closing flap panel articulated to said front wall;
- d. means joining said front and rear walls along the side edges thereof including glue flap panels;
- e. said glue flap panels lapping the side edges of said rear wall panel;
- f. said rear wall including an upper sealing zone adapted to be contacted by said closing flap;
- g. a pair of sealing aperture means defined in the side edges of said rear wall panel within said sealing zone;
- h. a bimodal adhesive layer deposited upon said glue flap panels and joining said glue flap panels with said rear panel;
- i. portions of said adhesive layer being exposed through said sealing apertures, whereby said closing flap is adapted to be adhesively joined directly to the innermost one of said glue flap panels and said rear wall panel through said apertures to close said envelope.
6 more elements
An improved envelope construction, comprising
- a. juxtaposed parallel front and rear wall panels;
- b. means joining said front and rear walls at bottom edges thereof;
- c. a closing flap panel articulated to said front wall;
- d. means joining said front and rear walls along the side edges thereof including glue flap panels;
- e. said glue flap panels lapping the side edges of said rear wall panel;
- f. said rear wall including an upper sealing zone adapted to be contacted by said closing flap;
- g. a pair of sealing aperture means defined in the side edges of each of said glue flap panels within said sealing zone;
- h. a bimodal adhesive layer deposited upon said rear wall panel and joining said glue flap panels with said rear panel;
- i. portions of said adhesive layer being exposed through said sealing apertures, whereby said closing flap is adapted to be adhesively joined directly to the innermost one of said glue flap panels and said rear wall panel through said apertures to close said envelope.
6 more elements
Dependencies are inferred from the claim text.