EP0321655A2 - Cover for a binder - Google Patents

Cover for a binder Download PDF

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Publication number
EP0321655A2
EP0321655A2 EP88115006A EP88115006A EP0321655A2 EP 0321655 A2 EP0321655 A2 EP 0321655A2 EP 88115006 A EP88115006 A EP 88115006A EP 88115006 A EP88115006 A EP 88115006A EP 0321655 A2 EP0321655 A2 EP 0321655A2
Authority
EP
European Patent Office
Prior art keywords
cover
plastic
edges
letter folder
letter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP88115006A
Other languages
German (de)
French (fr)
Other versions
EP0321655A3 (en
Inventor
Rudolf Burger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Michael Hoerauf Maschinenfabrik GmbH and Co KG
Original Assignee
Michael Hoerauf Maschinenfabrik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Michael Hoerauf Maschinenfabrik GmbH and Co KG filed Critical Michael Hoerauf Maschinenfabrik GmbH and Co KG
Publication of EP0321655A2 publication Critical patent/EP0321655A2/en
Publication of EP0321655A3 publication Critical patent/EP0321655A3/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D3/00—Book covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42F—SHEETS TEMPORARILY ATTACHED TOGETHER; FILING APPLIANCES; FILE CARDS; INDEXING
    • B42F13/00—Filing appliances with means for engaging perforations or slots
    • B42F13/0006—Covers for loose-leaf binders
    • B42F13/0013—Covers for loose-leaf binders made of special materials

Definitions

  • the invention relates to a letter folder lid produced in the adhesive lamination process using synthetic resin dispersion glue, in which a one-piece cardboard cover is provided with a one-piece plastic outer cover with edge flap and with a one-piece plastic inner cover without edge flap, but overlapping the folded-over edges of the plastic outer cover, and in which it is continuous plastic-covered letter folder cover is provided with continuous grooves from the outside on both sides of the letter folder back.
  • Letter folder lids are often provided with plastic covers on the outside and inside if higher demands are placed on the appearance and usability.
  • a one-piece cardboard ceiling of rectangular format is usually used, onto which a plastic outer cover is first glued on the outside.
  • the edges of the plastic outer cover which is congruent to the cardboard ceiling, but larger in terms of dimensions, are folded over and pressed on around the edges of the cardboard ceiling.
  • the inner plastic cover is then glued to the inside of the letter folder cover.
  • the dimensions of the plastic inner cover are somewhat smaller than the cardboard cover, but still so large that it overlaps the folded edges of the plastic outer cover. There are therefore areas in which the plastic outer cover is glued to the plastic inner cover by the synthetic resin dispersion glue.
  • Synthetic resin dispersion glues which contain synthetic resins dispersed in water, have proven themselves when a plastic cover is glued onto a cardboard box. However, they cause certain difficulties when two plastic covers ver together should be glued because the adhesive strength between two plastics is insufficient as long as there is still water in the glue. It usually takes several hours for two plastics to be reasonably firmly bonded to one another with the synthetic resin dispersion glue, and even then the usability with regard to the adhesive effect is lower than between plastic and cardboard.
  • So-called processing lines are often set up in the manufacture of letter folder lids, i.e. the individual operations are carried out quickly on successive machines. There is no time to allow the resin dispersion glue to harden completely before the next step after the plastic covers have been applied to the cardboard ceiling.
  • the invention has for its object to avoid the disadvantages mentioned in the letter folder cover described above and to ensure that the glue points between the plastic outer cover and the plastic inner cover are sufficiently firm even during further processing of the letter folder cover.
  • the invention consists in that the plastic inner cover has a recess in the area of the groove at its edges.
  • the plastic inner cover is left out in those places where it does not stick properly when processing the letter folder cover.
  • the invention is based on the finding that a little further from the edges of the plastic inner cover, the stretching of the plastic inner cover due to the grooving is just so much less that there is still sufficient adhesion between the two plastic covers during further processing of the letter folder cover .
  • the recess can be designed in detail as described in the subclaims.
  • a total of four such recesses are provided on the plastic inner cover, which can have the same dimensions to each other.
  • the recesses are made on the plastic inner cover even before the synthetic resin dispersion glue is applied.
  • the letter folder cover (1) shown in Fig. 1 consists of the side parts (2 and 3) and the letter folder back (4), each of the side parts (2 and 3) through a continuous groove (5 and 6) made from the outside ) is divided. These grooves (5 and 6) are required for one-piece letter folder covers (1) so that the side parts (2 and 3) can be pivoted relative to the letter folder back (4) when using the letter folder.
  • the finished letter folder later receives a finger hole (7) on the letter folder back (4) and further parts not shown in FIG. 1.
  • the letter folder cover (1) receives its stability from a cardboard cover (8) which is in one piece for the entire letter folder cover (1).
  • a plastic outer cover (9) is glued onto the side of the cardboard cover (8) assigned to the outside of the letter folder cover (1).
  • a synthetic resin dispersion glue is used for this in the manner already explained.
  • the cut for the plastic outer cover (9) is congruent with regard to the cut of the cardboard cover (8), but is somewhat larger in size.
  • the Edges (12 and 13) are folded and brushed around the edges (10 and 11) of the cardboard cover (8) in a separate operation.
  • the plastic inner cover (14) is then glued onto the side of the cardboard cover (8) assigned to the inside of the letter folder cover (1), in such a way that it covers the folded edges (12 and 13) of the plastic outer cover (9) in areas (15 and 16) overlaps. Overall, the cut of the plastic inner cover (14) is also congruent with the cut of the cardboard cover (8), but its dimensions are somewhat smaller than this.
  • the top view from the inside of the letter folder cover (1) according to FIG. 3 shows how the plastic inner cover (14) overlaps the four existing folded edges (12, 13, 17 and 18) of the plastic outer cover (9), specifically with Overlap areas (15, 16, 20 and 21).
  • the plastic inner cover (14) itself has edges (22, 23, 24 and 25).
  • the synthetic resin dispersion glue is somewhat problematic in the overlap areas (15, 16, 20 and 21), as has already been explained in the introduction to the description.
  • the points at which the edges (22 and 23) of the plastic inner cover (14) cross the respective groove (5 and 6) are particularly critical.
  • the plastic inner cover (14) detaches from the plastic outer cover (9) in this area, since normally during the manufacture of the Grooves (5 and 6) the synthetic resin dispersion glue is not yet hard enough. A little further away from the edges (22 and 23), i.e.
  • the invention takes advantage of this fact and provides that in the intersection areas of the edges (22 and 23) with the grooves (5 and 6) recesses (26) are provided, which the Have the shape of small rectangles and are provided with curves (27). It is provided that the width (B) of the recesses (26) corresponds approximately to 3 times the width (A) of a groove (5 or 6), while the depth (T) of the recesses (26) corresponds approximately to 1 to 2 times that Width (A) corresponds to a spline (5 or 6).

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Abstract

The cover for a binder is made by the adhesive laminating process using a synthetic resin dispersion glue. The single-piece cardboard cover is firstly provided with a single-piece plastic outside covering with wrapped-over edges. Subsequently, a single-piece plastic inside covering without wrapped-over edges is applied which, however, overlaps the wrapped-over edges of the plastic outside covering. Then a continuous grooving is applied from the outside of the cover for the binder on both sides of the back of the binder in each case. In this case, provision is made for the plastic inside covering to be recessed in each case at its edges in the region of the grooving. <IMAGE>

Description

Die Erfindung betrifft einen im Klebekaschierverfahren unter Verwendung von Kunstharzdispersionsleim hergestellten Brief­ordnerdeckel, bei dem eine einteilige Kartondecke mit einem einteiligen Kunststoffaußenbezug mit Kantenumschlag sowie mit einem einteiligen Kunststoffinnenbezug ohne Kantenumschlag, jedoch die umgeschlagenen Ränder des Kunststoffaußenbezugs überlappend, versehen ist und bei dem der auf diese Weise durchgehend kunststoffbezogene Briefordnerdeckel von der Außenseite her beidseits des Briefordnerrückens mit durch­gehenden Nuten versehen ist.The invention relates to a letter folder lid produced in the adhesive lamination process using synthetic resin dispersion glue, in which a one-piece cardboard cover is provided with a one-piece plastic outer cover with edge flap and with a one-piece plastic inner cover without edge flap, but overlapping the folded-over edges of the plastic outer cover, and in which it is continuous plastic-covered letter folder cover is provided with continuous grooves from the outside on both sides of the letter folder back.

Briefordnerdeckel werden häufig außen und innen durchgängig mit Bezügen aus Kunststoff versehen, wenn höhere Anforderungen an das Aussehen und in die Gebrauchstüchtigkeit gestellt werden. Hierfür wird in der Regel eine einteilige Kartondecke recht­eckigen Formates verwendet, auf welche zunächst außen ein Kunststoffaußenbezug aufgeleimt wird. Die Ränder des zur Kartondecke kongruenten, jedoch hinsichtlich der Abmessungen größeren Kunststoffaußenbezuges werden um die Kanten der Kartondecke umgeschlagen und angedrückt. Anschließend wird auf der Innenseite des Briefordnerdeckels der Kunststoffinnenbezug aufgeleimt. Der Kunststoffinnenbezug ist in seinen Abmessungen etwas kleiner als die Kartondecke, jedoch noch so groß, daß er die umgeschlagenen Ränder des Kunststoffaußenbezuges überlappt. Es gibt somit Bereiche, in welchen der Kunststoffaußenbezug mit dem Kunststoffinnenbezug durch den Kunstharzdispersionsleim verklebt ist.Letter folder lids are often provided with plastic covers on the outside and inside if higher demands are placed on the appearance and usability. For this, a one-piece cardboard ceiling of rectangular format is usually used, onto which a plastic outer cover is first glued on the outside. The edges of the plastic outer cover, which is congruent to the cardboard ceiling, but larger in terms of dimensions, are folded over and pressed on around the edges of the cardboard ceiling. The inner plastic cover is then glued to the inside of the letter folder cover. The dimensions of the plastic inner cover are somewhat smaller than the cardboard cover, but still so large that it overlaps the folded edges of the plastic outer cover. There are therefore areas in which the plastic outer cover is glued to the plastic inner cover by the synthetic resin dispersion glue.

Kunstharzdispersionsleime, welche in Wasser dispergierte Kunst­harze enthalten, haben sich bewährt, wenn ein Kunststoffbezug auf einen Karton aufgeleimt wird. Sie bereiten jedoch gewisse Schwierigkeiten, wenn zwei Kunststoffbezüge miteinander ver­ klebt werden sollen, weil die Klebefestigkeit zwischen zwei Kunststoffen unzureichend ist, solange noch Wasser in dem Leim enthalten ist. Es dauert in der Regel mehrere Stunden, bis zwei Kunststoffe mit dem Kunstharzdispersionsleim einigermaßen fest miteinander verklebt sind, wobei auch dann noch die Gebrauchs­tüchtigkeit hinsichtlich der Klebewirkung niedriger ist, als zwischen Kunststoff und Karton.Synthetic resin dispersion glues, which contain synthetic resins dispersed in water, have proven themselves when a plastic cover is glued onto a cardboard box. However, they cause certain difficulties when two plastic covers ver together should be glued because the adhesive strength between two plastics is insufficient as long as there is still water in the glue. It usually takes several hours for two plastics to be reasonably firmly bonded to one another with the synthetic resin dispersion glue, and even then the usability with regard to the adhesive effect is lower than between plastic and cardboard.

Zwar gibt es Leime, die für das Verkleben zweier Kunststoffe entwickelt wurden, jedoch sind diese Leime teurer als Kunst­harzdispersionsleime und häufig gesundheitsschädlich.There are glues that were developed for gluing two plastics, but these glues are more expensive than synthetic resin dispersion glues and are often harmful to health.

Bei der Herstellung von Briefordnerdeckeln werden heute häufig sogenannte Bearbeitungslinien eingerichtet, d.h. die einzelnen Arbeitsgänge werden auf aufeinanderfolgenden Maschinen zügig abgewickelt. Es verbleibt nicht die Zeit, den Kunstharzdisper­sionsleim vollständig aushärten zu lassen, bevor nach dem Auf­bringen der Kunststoffbezüge auf die Kartondecke der nächste Arbeitsgang erfolgt.So-called processing lines are often set up in the manufacture of letter folder lids, i.e. the individual operations are carried out quickly on successive machines. There is no time to allow the resin dispersion glue to harden completely before the next step after the plastic covers have been applied to the cardboard ceiling.

Beim Verleimen von Kunststoff auf Karton ist es unschädlich, wenn die Herstellung zügig vonstatten geht, da die Klebewirkung in einigen Minuten erreicht ist. Selbst beim Verkleben zweier Kunststoffe treten trotz der für längere Zeit verminderten Klebewirkung keine Schwierigkeiten auf, solange der Brief­ordnerdeckel noch vollständig plan liegt.When gluing plastic to cardboard, it is harmless if production is carried out quickly since the adhesive effect is achieved in a few minutes. Even when two plastics are glued, no difficulties arise despite the reduced adhesive effect for a long time, as long as the letter folder cover is still completely flat.

Erst dann, wenn von der Außenseite des Briefordnerdeckels her beidseits des Briefordnerrückens die bei einteiligen Brief­ordnerdeckeln erforderliche Nutung mit einem Biegewerkzeug hergestellt werden, treten ernsthafte Probleme an bestimmten Bereichen der miteinander verklebten Kunststoffe, also des Kunststoffaußenbezuges mit dem Kunststoffinnenbezug, auf. In der Praxis löst sich der Kunststoffinnenbezug im Bereich der Überlappung von den Rändern des Kunststoffaußenbezuges, und zwar an den Stellen, an denen die Nutung angebracht ist. Das Lösen des Kunststoffinnenbezuges in diesen speziellen Bereichen rührt offenbar daher, daß der Kunststoffinnenbezug während des Nutens gedehnt wird. Diese Dehnung ist im Bereich der äußeren Ränder des Kunststoffinnenbezuges am größten.Only when, from the outside of the letter folder lid on both sides of the letter folder back, the grooving required for one-piece letter folder lids is produced with a bending tool, do serious problems arise in certain areas of the adhesively bonded plastics, i.e. the plastic outer cover with the plastic inner cover. In practice, the plastic inner cover detaches from the edges of the plastic outer cover in the area of the overlap, specifically at the points where the grooving is applied. The Loosening the plastic inner cover in these special areas apparently stems from the fact that the plastic inner cover is stretched during grooving. This stretch is greatest in the area of the outer edges of the plastic inner cover.

Der Erfindung liegt die Aufgabe zugrunde, die genannten Nach­teile bei dem eingangs beschriebenen Briefordnerdeckel zu ver­meiden und dafür Sorge zu tragen, daß die Klebestellen zwischen dem Kunststoffaußenbezug und dem Kunststoffinnenbezug auch bei der Weiterverarbeitung des Briefordnerdeckels ausreichend fest sind.The invention has for its object to avoid the disadvantages mentioned in the letter folder cover described above and to ensure that the glue points between the plastic outer cover and the plastic inner cover are sufficiently firm even during further processing of the letter folder cover.

Die Erfindung besteht darin, daß der Kunststoffinnenbezug im Bereich der Nutung an seinen Rändern jeweils eine Aussparung aufweist.The invention consists in that the plastic inner cover has a recess in the area of the groove at its edges.

Der Kunststoffinnenbezug wird an denjenigen Stellen ausgespart, an denen er bei der Weiterverarbeitung des Briefordnerdeckels nicht richtig klebt. Die Erfindung geht dabei jedoch von der Erkenntnis aus, daß etwas weiter von den Rändern des Kunst­stoffinnenbezuges entfernt die Dehnung des Kunststoffinnen­bezuges infolge der Nutung gerade um so viel geringer ist, daß hier noch eine ausreichende Haftung zwischen den zwei Kunst­stoffbezügen bei der Weiterverarbeitung des Briefordnerdeckels vorhanden ist.The plastic inner cover is left out in those places where it does not stick properly when processing the letter folder cover. However, the invention is based on the finding that a little further from the edges of the plastic inner cover, the stretching of the plastic inner cover due to the grooving is just so much less that there is still sufficient adhesion between the two plastic covers during further processing of the letter folder cover .

Die Aussparung kann im Detail so gestaltet sein, wie sie in den Unteransprüchen beschrieben ist.The recess can be designed in detail as described in the subclaims.

Insgesamt sind am Kunststoffinnenbezug vier solcher Ausspa­rungen vorgesehen, die zueinander gleiche Abmessungen haben können. Die Aussparungen werden am Kunststoffinnenbezug bereits angebracht, noch bevor der Kunstharzdispersionsleim aufgebracht wird.A total of four such recesses are provided on the plastic inner cover, which can have the same dimensions to each other. The recesses are made on the plastic inner cover even before the synthetic resin dispersion glue is applied.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels.Further advantages and features of the invention result from the following description of an exemplary embodiment.

Es zeigen:

  • Fig. 1 in schematischer perspektivischer Darstellung einen Briefordnerdeckel, von der Außenseite betrachtet,
  • Fig. 2 in vergrößerter Darstellung einen Schnitt längs der Schnittlinie II-II der Fig. 1,
  • Fig. 3 eine Draufsicht auf den erfindungsgemäßen Brieforder­deckel, von der Innenseite her gesehen.
Show it:
  • 1 is a schematic perspective view of a letter folder cover, viewed from the outside,
  • 2 is an enlarged view of a section along the section line II-II of FIG. 1,
  • Fig. 3 is a plan view of the letter cover according to the invention, seen from the inside.

Der in Fig. 1 dargestellte Briefordnerdeckel (1) besteht aus den Seitenteilen (2 und 3) sowie dem Briefordnerrücken (4), der von den Seitenteilen (2 und 3) jeweils durch eine von der Außenseite her aufgebrachte durchgehende Nut (5 bzw. 6) abge­teilt ist. Diese Nuten (5 und 6) sind bei einteiligen Brief­ordnerdeckeln (1) erforderlich, damit der Seitenteile (2 und 3) bei Gebrauch des Briefordners gegenüber dem Briefordnerrücken (4) verschwenkt werden können. Der fertige Briefordner erhält später am Briefordnerrücken (4) noch ein Griffloch (7) sowie weitere, in Fig. 1 nicht dargestellte Teile.The letter folder cover (1) shown in Fig. 1 consists of the side parts (2 and 3) and the letter folder back (4), each of the side parts (2 and 3) through a continuous groove (5 and 6) made from the outside ) is divided. These grooves (5 and 6) are required for one-piece letter folder covers (1) so that the side parts (2 and 3) can be pivoted relative to the letter folder back (4) when using the letter folder. The finished letter folder later receives a finger hole (7) on the letter folder back (4) and further parts not shown in FIG. 1.

Bei dem in Fig. 2 in vergrößertem Maßstab dargestellten Schnitt durch ein Seitenteil (2) erkennt man, daß der Briefordnerdeckel (1) seine Stabilität von einer Kartondecke (8) erhält, welche für den gesamten Briefordnerdeckel (1) einteilig ist. Wie in der Schnittdarstellung nach Fig. 2 weiter ersichtlich, ist auf deie der Außenseite des Briefordnerdeckels (1) zugeordnete Seite der Kartondecke (8) ein Kunststoffaußenbezug (9) aufge­leimt. Hierfür wird in bereits erläuterter Weise ein Kunstharz­dispersionsleim verwendet. Der Zuschnitt für den Kunststoff­außenbezug (9) ist hinsichtlich des Zuschnittes der Kartondecke (8) kongruent, jedoch in den Abmessungen etwas größer. Die Ränder (12 und 13) werden in einem gesonderten Arbeitsgang um die Kanten (10 und 11) der Kartondecke (8) umgeschlagen und an­gebürstet. Anschließend wird auf die der Innenseite des Brief­ordnerdeckels (1) zugeordnete Seite der Kartondecke (8) der Kunststoffinnenbezug (14) aufgeleimt, und zwar in der Weise, daß er die umgeschlagenen Ränder (12 und 13) des Kunststoff­außenbezuges (9) in Bereichen (15 und 16) überlappt. Insgesamt ist der Zuschnitt des Kunststoffinnenbezuges (14) ebenfalls kongruent zum Zuschnitt der Kartondecke (8), jedoch in seinen Abmessungen etwas kleiner als diese.In the section through a side part (2) shown on an enlarged scale in FIG. 2, it can be seen that the letter folder cover (1) receives its stability from a cardboard cover (8) which is in one piece for the entire letter folder cover (1). As can further be seen in the sectional view according to FIG. 2, a plastic outer cover (9) is glued onto the side of the cardboard cover (8) assigned to the outside of the letter folder cover (1). A synthetic resin dispersion glue is used for this in the manner already explained. The cut for the plastic outer cover (9) is congruent with regard to the cut of the cardboard cover (8), but is somewhat larger in size. The Edges (12 and 13) are folded and brushed around the edges (10 and 11) of the cardboard cover (8) in a separate operation. The plastic inner cover (14) is then glued onto the side of the cardboard cover (8) assigned to the inside of the letter folder cover (1), in such a way that it covers the folded edges (12 and 13) of the plastic outer cover (9) in areas (15 and 16) overlaps. Overall, the cut of the plastic inner cover (14) is also congruent with the cut of the cardboard cover (8), but its dimensions are somewhat smaller than this.

Der Draufsicht von der Innenseite auf den Briefordnerdeckel (1) gemäß Fig. 3 ist zu entnehmen, wie der Kunststoffinnenbezug (14) die insgesamt vier vorhandenen umgeschlagenen Ränder (12, 13, 17 und 18) des Kunststoffaußenbezuges (9) überlappt, und zwar mit Überlappungsbereichen (15, 16, 20 und 21). Der Kunst­stoffinnenbezug (14) selbst weist dabei Ränder (22, 23, 24 und 25) auf.The top view from the inside of the letter folder cover (1) according to FIG. 3 shows how the plastic inner cover (14) overlaps the four existing folded edges (12, 13, 17 and 18) of the plastic outer cover (9), specifically with Overlap areas (15, 16, 20 and 21). The plastic inner cover (14) itself has edges (22, 23, 24 and 25).

Der Kunstharzdisperionsleim ist in den Überlappungsbereichen (15, 16, 20 und 21) etwas problematisch, wie in der Beschrei­bungseinleitung bereits erläutert wurde. Besonders kritisch sind diejenigen Stellen, an denen die Ränder (22 und 23) des Kunststoffinnenbezuges (14) die jeweilige Nutung (5 bzw. 6) kreuzen. Infolge der Dehnung des Kunststoffinnenbezuges (14) im Bereich seiner Ränder (22 und 23) beim Herstellen der Nuten (5 und 6) löst sich in diesen Bereich der Kunststoffinnenbezug (14) vom Kunststoffaußenbezug (9) ab, da im Normalfall bei der Herstellung der Nuten (5 und 6) der Kunstharzdispersionsleim noch nicht genügend hart ist. Etwas weiter von den Rändern (22 und 23) entfernt, also mehr zum Inneren des Kunststoffinnen­bezuges (14) hin, ist die Ablösungsgefahr geringer, da die Dehnung zur Mitte des Briefordnerdeckels (1) hin abnimmt. Die Erfindung macht sich diesen Umstand zunutze und sieht vor, daß in den Kreuzungsbereichen der Ränder (22 und 23) mit den Nuten (5 und 6) jeweils Aussparungen (26) vorgesehen werden, die die Form kleiner Rechtecke haben und mit Rundungen (27) versehen sind. Dabei ist vorgesehen, daß die Breite (B) der Aussparungen (26) etwa dem 3fachen der Breite (A) einer Nutung (5 oder 6) entspricht, während die Tiefe (T) der Aussparungen (26) etwa dem 1- bis 2fachen der Breite (A) einer Nutung (5 oder 6) entspricht.The synthetic resin dispersion glue is somewhat problematic in the overlap areas (15, 16, 20 and 21), as has already been explained in the introduction to the description. The points at which the edges (22 and 23) of the plastic inner cover (14) cross the respective groove (5 and 6) are particularly critical. As a result of the stretching of the plastic inner cover (14) in the area of its edges (22 and 23) during the production of the grooves (5 and 6), the plastic inner cover (14) detaches from the plastic outer cover (9) in this area, since normally during the manufacture of the Grooves (5 and 6) the synthetic resin dispersion glue is not yet hard enough. A little further away from the edges (22 and 23), i.e. more towards the inside of the plastic inner cover (14), the risk of detachment is lower since the stretch decreases towards the center of the letter folder cover (1). The invention takes advantage of this fact and provides that in the intersection areas of the edges (22 and 23) with the grooves (5 and 6) recesses (26) are provided, which the Have the shape of small rectangles and are provided with curves (27). It is provided that the width (B) of the recesses (26) corresponds approximately to 3 times the width (A) of a groove (5 or 6), while the depth (T) of the recesses (26) corresponds approximately to 1 to 2 times that Width (A) corresponds to a spline (5 or 6).

Versuche haben gezeigt, daß die Aussparungen (26) das Aussehen eines Briefordnerdeckels (1) nicht beeinträchtigen und daß auch die Gebrauchstüchtigkeit durch die Aussparungen (26) nicht gestört ist.Tests have shown that the cutouts (26) do not impair the appearance of a letter folder cover (1) and that the usability is not impaired by the cutouts (26).

Claims (5)

1. Briefordnerdeckel o.dgl., bei dem eine einteilige Kartondecke mit einem einteiligen Kunststoffaußenbezug mit Kantenumschlag sowie mit einem einteiligen Kunststoffinnenbezug ohne Kantenumschlag, jedoch die umgeschlagenen Ränder des Kunststoffaußenbezugs überlappend, versehen ist und bei dem von der Außenseite her beidseits des Briefordnerrückens durch­gehende Nuten vorgesehen sind, insbesondere mit im Klebe­kaschierverfahren unter Verwendung von Kunstharzdispersionsleim aufgebrachten Kunststoffbezügen, dadurch gekennzeichnet, daß der Kunststoffinnenbezug (14) im Bereich der Nuten (5, 6) an seinen Rändern (22, 23) jeweils eine Aussparung (26) aufweist.1. Letter folder cover or the like, in which a one-piece cardboard cover with a one-piece plastic outer cover with edge flap and with a one-piece plastic inner cover without edge flap, but overlapping the folded edges of the plastic outer cover, is provided and is provided with grooves from the outside on both sides of the letter back are, in particular with plastic covers applied in the adhesive lamination process using synthetic resin dispersion glue, characterized in that the plastic inner cover (14) in the region of the grooves (5, 6) has a recess (26) at its edges (22, 23). 2. Briefordnerdeckel nach Anspruch 1, dadurch gekennzeich­net, daß die Aussparung (26) im wesentlichen die Form eines Rechteckes aufweist.2. letter folder cover according to claim 1, characterized in that the recess (26) has substantially the shape of a rectangle. 3. Briefordnerdeckel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Breite (B) der Aussparung (26) etwa die 3fache Breite (A) der Nuten (5, 6) beträgt.3. letter folder cover according to claim 1 or 2, characterized in that the width (B) of the recess (26) is approximately 3 times the width (A) of the grooves (5, 6). 4. Briefordnerdeckel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Tiefe (T) der Aussparung (26) etwa der 1- bis 2fachen Breite (A) der Nuten (5, 6) entspricht.4. letter folder cover according to one of claims 1 to 3, characterized in that the depth (T) of the recess (26) corresponds approximately to 1 to 2 times the width (A) of the grooves (5, 6). 5. Briefordnerdeckel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Aussparung (26) mit abgerun­deten Ecken (27) versehen ist.5. letter folder cover according to one of claims 1 to 4, characterized in that the recess (26) is provided with rounded corners (27).
EP19880115006 1987-12-23 1988-09-14 Cover for a binder Withdrawn EP0321655A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873743724 DE3743724A1 (en) 1987-12-23 1987-12-23 LETTER FOLDER COVER
DE3743724 1987-12-23

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EP0321655A2 true EP0321655A2 (en) 1989-06-28
EP0321655A3 EP0321655A3 (en) 1990-10-24

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EP19880115006 Withdrawn EP0321655A3 (en) 1987-12-23 1988-09-14 Cover for a binder

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3926834A1 (en) * 1989-08-14 1991-02-21 Leitz Fa Louis Letter file made from cardboard - is covered with plastics film and has cover hinges formed by two parallel grooves
EP1010544A2 (en) * 1998-12-10 2000-06-21 Wolfgang Lieth File
WO2001034404A1 (en) * 1999-11-10 2001-05-17 Roal Plast Co. A/S Binder having cover with one open side

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19521685C2 (en) * 1995-06-14 1998-04-16 Emitec Emissionstechnologie Method and device for manufacturing a honeycomb body
DE29709091U1 (en) * 1997-05-23 1997-08-14 Herlitz PBS AG Papier-, Büro- und Schreibwaren, 13507 Berlin File folder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1123779A (en) * 1966-11-29 1968-08-14 Karl Bene Loose leaf binder
FR2532343A1 (en) * 1982-08-28 1984-03-02 Alkor Gmbh CARDBOARD COMPRISING A POLYOLEFIN COATING, PREFERABLY FOR CLASSERS, RING BINDERS, AND OTHER COMMON ORGANIZATION AND OFFICE ARTICLES

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1123779A (en) * 1966-11-29 1968-08-14 Karl Bene Loose leaf binder
FR2532343A1 (en) * 1982-08-28 1984-03-02 Alkor Gmbh CARDBOARD COMPRISING A POLYOLEFIN COATING, PREFERABLY FOR CLASSERS, RING BINDERS, AND OTHER COMMON ORGANIZATION AND OFFICE ARTICLES

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3926834A1 (en) * 1989-08-14 1991-02-21 Leitz Fa Louis Letter file made from cardboard - is covered with plastics film and has cover hinges formed by two parallel grooves
EP1010544A2 (en) * 1998-12-10 2000-06-21 Wolfgang Lieth File
EP1010544A3 (en) * 1998-12-10 2001-01-31 Wolfgang Lieth File
WO2001034404A1 (en) * 1999-11-10 2001-05-17 Roal Plast Co. A/S Binder having cover with one open side

Also Published As

Publication number Publication date
EP0321655A3 (en) 1990-10-24
DE3743724A1 (en) 1989-07-13

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