Self-sealing closure for mailing bags

Details Self-sealing closure for mailing bags Self-sealing closure for mailing bags

1978-02-13

1980-03-11

Garbe, Stephen P.

Envelopes, wrappers, and paperboard boxes

Envelope

Closures

206632, 229485B, 229 62, B65D 2716, B65D 2732, B65D 3320

Patent

active

041924487

ABSTRACT:
A self-sealing closure for mailing bags, envelopes, sacks, or similar articles, in which a strip-shaped dry latex, synthetic resin or adhesive gum coating is applied on the inside of a closure flap and on an edge zone of the backside of the mailing bag. A template flap is formed at the free end of the backside, and the magnitude of the contact area between coatings on the closure flap and the backside is variable. The template flap can be folded about a crease line, and in one position of the template flap, there is exposed a partial area of the adhesive contact surfaces, to produce a printed-matter closure. The template flap has another position in which there is exposed the complete area of the adhesive surfaces which may be brought into contact to produce a first-class letter type of seal. The template flap, moreover, has contact cutouts which may have circular, oblong, rectangular, oval or other shapes. The contact cutouts, moreover, are punched out in the vicinity of the front edge of the template flap. The width of the template flap may be narrower than the width of the coating on the backside.

REFERENCES:
patent: 1212904 (1917-01-01), Chesterton
patent: 1291974 (1919-01-01), McNeil
patent: 2066495 (1937-01-01), Swift
patent: 2074949 (1937-03-01), Swift
patent: 2215989 (1940-09-01), Wolf
patent: 2222341 (1940-11-01), Stuhlman
patent: 2314819 (1943-03-01), Ewer
patent: 4071186 (1978-01-01), Ruda

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