US2205529A

US2205529A - Dry-sealing envelope

Info

Publication number: US2205529A
Application number: US209431A
Authority: US
Inventors: Vincent E Heywood
Original assignee: United States Envelope Co
Current assignee: United States Envelope Co
Priority date: 1937-06-14
Filing date: 1938-05-23
Publication date: 1940-06-25
Anticipated expiration: 1957-06-25

Description

June 25, 1940.

V. E. HEYWOOD DRY-SEALING ENVELOPE Original Filed June 14, 1937 UNITED s'rArl-zs PATENT OFFICE 2,205,529 DRY-SEALING ENVELOPE Vincent E. Heywood, Worcester, Mass, assignor to United States Envelope Company, iicld, Man, a corporation of Maine Spring- Original application June 14, 1937, Serial No.

Divided and till application May 23,

1938, Serial No. 209,431

4Glaiml.

5 tion relating particularly to envelopes that are adapted to be sealed by bringing areas coated with dry-sealing adhesive into non-moistened contact.

According to the present invention, the prob lem of preventing accidental engagement between the dry-sealing adhesive areas, prior to the loading and sealing of such envelopes, is

solvedby utilizing a free portion for disposal between the dry-sealing adhesive areas when the seal flap is folded over for packing the envelope. This free' portion is normally in parallel relation to the seal flap, and by reason of being unattached to the envelope walls, is readily shiftable to expose' the seal flap adhesive areas, when it is desired to close and seal the envelope by folding over the flap and thus bring the dry-sealing adhesive areas into engagement. The above and other advantageous features of the invention will hereinafter more fully appear from the following description, considered in connection with the accompanying drawing, in which: I

Fig. 1 is a plan view of an envelope embodying the invention.

Fig. 2 is a vertical sectional view along the line 2-2 of Fig. 1..

Fig. 3 is a sectional view, illustrating the loading and sealing of the envelope.

Referring to the drawing, the invention is shown as being embodied in an envelope in which the rear wall I comprises side flaps 2 and a bottom flap 3, with areas 4 of dry-sealing adhesive applied to the side flaps 2. A seal flap 5, extending from the front wall 6, provides a drysealing adhesive area 1, adapted to contact the adhesive areas 4 when the flap 5 is folded over to close and seal the envelope, as indicated in dotted lines in Fig. 3.

A strip 8, preferably composed of tissue material, is disposed just within the mouth of the envelope pocket, with one margin of the strip 8 folded over the edge of the side flaps 2 to form a lip 9, which holds the strip in position. The remainder of the strip 8 extends within the .envelope pocket for a short distance, where it,

is folded as indicated at ill, and then extends upwardly outside the envelope pocket, with its upper free edge above the margin of the seal flap 5. The envelope, as shown in Figs. 1 and 2, may be packed without possibility of accidental engagement between the dry-sealing adhesive areas 1 and I, by folding over the flap 5, as indicated in dotted lines in Fig. 2, wherein the free marginal portion of the strip is disposed between the oppositely facing dry-sealing adhe-. sive areas I and 4.

When it is desired to load and seal the envelope of Fig. 1, an enclosure ii is inserted betweeen the lip 9 and the portion of the strip 8 covering the seal flap, it being evident from Fig. 2 that the folded strip will serve to guide the enclosure into the envelope pocket. As the enclosure is pushed down, its lower edge engages the fold i0 and draws the strip 8 downwardly to the bottom of the envelope, as shown in Fig.

velope walls i and 6, the insertion of the ention of a free portion to separate the dry-sealing adhesive areas when packing the envelope, which free portion is entirely unattached to the walls of the envelope pocket. For this reason, the strip which provides the free portion can be conveniently incorporated in the envelope at the time of its manufacture, without involving any additional adhesive applying attachments which will add to the cost of envelope manufacture.

I claim:

1. An envelope having its body and a flap provided with areas of dry-sealing adhesive, and a folded strip unattached to said body and providing a free portion extending in parallel relation to said flap, for separating said dry-sealing adhesive areas when said flap is folded over for packing the envelope.

2. An envelope having its body and a flap provided with areas of dry-sealing adhesive, and a folded strip unattached to said body and providing a free portion extending in parallel relation to said flap, for separating said dry-sealing adhesive areas when said flap is folded over for packing the envelope, the fold in said strip being shiftable to expose the adhesive area on said flap, preparatory to folding over said flap to bring said adhesive areas into dry-sealing engagement.

3. An envelope having one wall and a flap provided with areas of dry-sealing adhesive, and

5 a folded strip disposed partially within the envelope pocket and providing a portion extending 4. An envelope having one wall and a flap provided with areasof dry-sealing adhesive, and a folded strip disposed partially within the envelope pocket and providing a portion extending freely outside of the pocket for separating said dry-sealing adhesive areas when said flap is folded over for packing, said strip being folded over the free edge of said wall to maintain it loosely in position, with said strip being movable bodily into the envelope pocket to expose the adhesive area on said flap, preparatory to folding over said flap to bring said adhesive areas into 10 dry-sealing engagement.

vmcnm' E. HEYWOOD.