US3833244A

US3833244A - Adhesive binding cover

Info

Publication number: US3833244A
Application number: US00346887A
Authority: US
Inventors: E Heimann
Original assignee: Individual
Current assignee: Individual
Priority date: 1970-12-03
Filing date: 1973-04-02
Publication date: 1974-09-03
Anticipated expiration: 1991-09-03

Abstract

Adhesive binding folder for binding loose sheets with two outside enclosing covers, joined to each other by a back strip which carries a double self adhesive layer against which the narrow rear edges of the bound inner sheets are positioned. The layer includes a removable strip to expose the adhesive and thereby adhere to the sheets. An inner protective sheet for the purpose of attachment penetrates with a narrow margin into the contact interface of the self adhesive layer. Said sheet serves to cover the self-adhesive layer laid bare by pulling out individual sheets.

Description

United States Patent {191 Heimann Sept. 3, 1974 ADHESIVE BINDING COVER [76] Inventor: Egon Heimann, Falkenberg 61, 56,

Wuppertal-Elberfeld, Germany [22] Filed: Apr. 2, 1973 [21] Appl. No.: 346,887

Related U.S. Application Data [63] Continuation of Ser. No. 97,412, Dec. 3, 1970,

abandoned. i

[52] US. Cl. ..'.l.. 281/2l R, 281/29 [51] Int. Cl B42d 1/04 [58] Field of Search 281/21 R, 29

[56] References Cited Y UNITED STATES PATENTS 3,188,114 I 6/1965 OBrien et a1 281/21 R 3,210,093 10/1965 Steidinger 281/21 R FOREIGN PATENTS OR APPLlCATIQNS 1,282,002 -11/l968 Germany 281/21 R 6,711,263 2/1969 Netherlands 281/21 R Primary ExaminerJerome Schnall Attorney, Agent, or Firm-Spencer & Kaye [5 7] ABSTRACT Adhesive binding folder for binding loose sheets with two outside enclosing covers, joined to each other by a back strip which carries a double self adhesive layer against which the narrow rear edges of the bound inner sheets are positioned. The layer includes a removable strip to expose the adhesive and thereby ad-- here to the sheets. An inner protective sheet for the purpose of attachment penetrates with a narrow margin into the contact interface of the self adhesive layer. Said sheet serves to cover the self-adhesive layer laid bare by pulling out individual sheets.

3 Claims, 8 Drawing Figures PATENTEDSEF 31914 3,833,244

SHEET 20F 3 594mm aw ADHESIVE BINDING COVER CROSS-REFERENCE TO RELATED APPLICA- TION No. 97,412,,filed Dec. 3rd, 1970, now abandoned.

7 SUMMARY OF THE INVENTION The invention relates to an adhesive binding folder with two outside enclosing covers, joined to each other by a back strip. The strip carries a self-adhesive layer against which the narrow rear edges of the bound inner sheets are positioned. The layer includes a removable strip to expose the adhesive and thereby adhere to the sheets. The conventional back strips connecting the enclosing covers consist of relatively thick material. This is necessary for applying a sufficiently thick self-adhesive layer to the back strip. However, inconvenience in folding and adjusting of the back strip to the narrow edges of the sheets is usually encountered.

Unfortunately, pliable back strips of thinner material do not possess the-required amount of a thinner adhesive coating, so that the los ely bound sheets are not firmly retained.

Thus the problem encountered by the prior art co'n- This application is a continuation of application Ser.

cover the bared self-adhesive layer of the back strip before the individual sheets have been bound in, and, on the other, the self-adhesive coating, for instance of siliconized carrier strip material, upon it becomes attached to the self-adhesive layer of the back strip.

The outside edges of this two-fold adhesive layer,

I greatly facilitate the provision of an inner protective sists in providing an adhesive binding folder comprising a backstrip which joins the enclosing covers and, to 'ensure an easy folding movement of the enclosing covers,

- is made of thin material, additionally the'choice of thin materialmust possess a secure adhesive bond to prevent self-release of the individualbound sheets. An additional requirement is the formation of an adhesivebinding folder to prevent the sticking-of the topmost sheet to the self-adhesive layer exposed by-the pulling out of individual sheets.

The present invention suggests a self-adhesive layer of the back strip formed double'between the edges of the enclosing covers facing each other by means of a transfer strip adhesively secured in this zone.

The outer edgesof the twofold adhesive layer are spacedfrom the opposing parallel edges of theenclosing covers and secured thereto.

The invention further suggests a-protective sheet proleaf, which for the purpose of attachment penetrates with a narrow margin into the contact interface of the self-adhesive layers. This inner protective leaf serves to cover the self-adhesive layer laid bare by pulling out individual sheets to prevent theflat adhesion of the sheet left topmost. Thin plastic foil is particularly suitable as material for the inner protective leaf. The secure contact of theflat margin of the inner protective leaf with the self-adhesive layer of the back strip exposed by the tearing out of individual leaves is expedited by giving an electrostatic charge to the inner protective leaf of plastic foil.

BRIEF DESCRIPTION OF DRAWINGS The invention will now be described by way of examplewith reference to thedrawings in which FIG. 1- is an elevation of the adhesive binding folder according to the first embodiment of the invention;

FIG. 2'is a top view'of the unfolded back strip joining the enclosing covers by the transfer strip;

FIG- 3 is a section view along line III-III in FIG. 2 in magnified diagrammatic presentation;

,FIG. 4 is similar to FIG. 3 with the carrier strip mate- 7 rial removed;

jecting into the contact interface of the two selfadhesive layers.

The invention further envisions an inner protective sheet made of a thin plastic foil.

The invention consists in an adhesive binding folder with two outside enclosing'covers interconnected by a back strip having an inward self adhesive layer against which are applied't he thin rear edges of the bound inner leafs.

The invention produces an adhesive binding folder whose back strip determined by the structural height of thin material ensures a secure bond with the individual sheets held by it. Despite the thinness of the back strip FIG. 5 is a section view through the adhesive binding folder with individual leaves emplaced;

FIG. 6 is a second form of embodiment according to FIG. 3 incorporating an inner protection leaf;

FIG. 7 is a section view of an adhesive binding folder provided -withan inner protection leaf and bound sheets; and v FIG. 8 is similar to FIG. 7 with individual sheets partly removed. I

In the embodiment illustrated in FIGS. 1 to 5 the adhesive binding folder includes enclosing covers land 2 interconnected by a back strip 3; The, latter is inwardly provided with a self-adhesive coating 4.

In the portion between the parallelly aligned opposing edges 1 and 2' of the enclosing

covers

1 and 2, a transfer strip 5 is secured over the self-adhesive layer 4 of the back strip 3. This transfer strip 5 consists of a carrier strip 7, one side of which is provided with a coating of silicone 6. A second adhesive layer 8 is arranged upon the said silicone layer 6.

The secondary adhesive layer 8 is deposited against the self-adhesive layer 4 of the back strip. The second adhesive layer 8 is adjusted to the back strip 3 to dispose the outer margins 8 of the adhesive layer 8 a distance x from the opposing edges 1' and 2 of the enclosing

covers

1 and 2.

To bind a stack of sheets made up of individual leaves 9 the carrier strip 7, provided with the silicone layer 6, is removed while the second adhesive strip 8 maintains its bond with the self-adhesive layer 4. In this way, a

double self-adhesive layer is obtained on the back strip 3 in the zone between the opposing edges 1 and 2' of the enclosing

covers

1 and 2, the said layer entering into an intimate bond with. the narrow rear edges 9' of the individual leaves 9.

Owing to the space 1:, the binding-in of the individual leaves 9 is made easier. Further, this space 1:, which is at least as wide asthe thickness measurement of the enclosing

cover

1 or 2, facilitates the folding of the adhesive bindingfolder.

I The embodiment shown in FIGS. 6 to 8 incorporates an inner protective leaf 10. This inner protective leaf, made of a thin plastic foil, projects with its narrow margin into the contact gutter F of the two

selfadhesive layers

4 and 8..Once the carrier strip 7 has been pulled back, the second adhesive layer becomes attached'to the adhesive layer 4 and to the margin 10' of the inner protective leaf 10. Accordingly, the individual leaves 9 can be brought into adhesive bond with the exposed double adhesive layer.

If, beginning with FIG. 7, individual leaves 9 are withdrawn from the adhesive binding folder by being pulled off from the self-adhesive layer 8, the self-adhesive layer 4 will be partly' exposed. To prevent this from entering into a flat bond with the topmost individual sheet, the inner protective leaf 10 covers the exposed self-adhesive layer see FIG. 8. The secure contact of the sectional area of the inner protective leaf 10 with the bared self-adhesive layer may be expedited by an electrostatic charge upon the inner protective leaf '10,

which is made of thin plastic foil.

What I claim is:

1. An adhesive binding folder comprising: a backing strip; a first coating of self-adhesive material having a first surface, said coating having a substantially uniform thickness and being attached to said backing strip on one surface thereof; two outside enclosing covers which are directly attached to a second surface of said first adhesive coating opposite said backing strip so as being disposed exclusively in the area between the two outside covers whereby individual leaves can be attached to said second adhesive coating between said covers and the total thickness of adhesive-being greater in the area covered by said second coating than in the area covered only by said first coating; a carrier strip having a silicone coating on one surface thereof and being attached to said second adhesive coating along the surface having said silicone coating on the side opposite said backing strip and capable of being easily removed from said second coating, whereby the individual leaves can then be attached to said second coating;

. and an inner protective sheet having an edge zone extending along one of said elongated margins, said zone being interposed between said first adhesive coating and said second adhesive coating, said inner protective sheet being .arranged so as to cover at least a portion of the outersurface of said second adhesive coating for covering adhesive exposed by removal of individual leaves.

2. Adhesive binding folder as set forth in claim 1, wherein said second adhesive coating is spaced from each of said covers by a predetermined distance, which is at least equal to the thickness ,of said covers, when the covers are in an open position.

3. Adhesive binding folder as set'forth in claim 1 wherein said inner protective sheet is made of a thin plastic foil.

v UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. ,833,244 Dated September 3rd, 1974 Inventor-(s) Eqon Heimann It is certified that error appears in the above-identified patent and that said Letters Patent are hereby correctedl as shown below:

In the heading of the patent, after line 5, insert:

Foreign Application Priority Data Dec. 5, 1969 Germany. l96l040- Signed and sealed this 24th day of December 1974.

(SEAL) Attest:

MCCOY M. GIBSON JR. c. MARSHALL DANN Attesting Officer Commissioner of Patents F ORM PO-1050 (10-69) USCOMM-DC 60376-1 69 uis. GOVERNMENT rnm'rmc OFFICE nu o-ac-su.

Claims

1. An adhesive binding folder comprising: a backing strip; a first coating of self-adhesive material having a first surface, said coating having a substantially uniform thickness and being attached to said backing strip on one surface thereof; two outside enclosing covers which are directly attached to a second surface of said first adhesive coating opposite said backing strip so as to be attached to said one surface of said backing strip by said first adhesive coating, said covers being attached to opposite elongated margins of said backing strip leaving adhesive exposed in the central area of the strip between edges of the covers; and a second coating of self-adhesive material of a substantially uniform thickness covering only a portion of said first adhesive coating and having one entire surface attached to said first adhesive coating, said second adhesive coating being disposed exclusively in the area between the two outside covers whereby individual leaves can be attached to said second adhesive coating between said covers and the total thickness of adhesive being greater in the area covered by said second coating than in the area covered only by said first coating; a carrier strip having a silicone coating on one surface thereof and being attached to said second adhesive coating along the surface having said silicone coating on the side opposite said backing strip and capable of being easily removed from said second coating, whereby the individual leaves can then be attached to said second coating; and an inner protective sheet having an edge zone extending along one of said elongated margins, said zone being interposed between said first adhesive coating and said second adhesive coating, said inner protective sheet being arranged so as to cover at least a portion of the outer surface of said second adhesive coating for covering adhesive exposed by removal of individual leaves.

2. Adhesive binding folder as set forth in claim 1, wherein said second adhesive coating is spaced from each of said covers by a predetermined distance, which is at least equal to the thickness of said covers, when the covers are in an open position.

3. Adhesive binding folder as set forth in claim 1 wherein said inner protective sheet is made of a thin plastic foil.