EP0468256B1 - Envelope with adhesive closure - Google Patents

Envelope with adhesive closure Download PDF

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Publication number
EP0468256B1
EP0468256B1 EP91111271A EP91111271A EP0468256B1 EP 0468256 B1 EP0468256 B1 EP 0468256B1 EP 91111271 A EP91111271 A EP 91111271A EP 91111271 A EP91111271 A EP 91111271A EP 0468256 B1 EP0468256 B1 EP 0468256B1
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EP
European Patent Office
Prior art keywords
envelope
flap
adhesive
self
adhesive layer
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.)
Expired - Lifetime
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EP91111271A
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German (de)
French (fr)
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EP0468256A1 (en
Inventor
Jules Fischer
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Folien Fischer AG
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Folien Fischer AG
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Publication date
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Priority to AT91111271T priority Critical patent/ATE97873T1/en
Publication of EP0468256A1 publication Critical patent/EP0468256A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D27/00Envelopes or like essentially-rectangular containers for postal or other purposes having no structural provision for thickness of contents
    • B65D27/12Closures
    • B65D27/14Closures using adhesive applied to integral parts, e.g. flaps
    • B65D27/16Closures using adhesive applied to integral parts, e.g. flaps using pressure-sensitive adhesive

Definitions

  • the present invention relates to an envelope with a pressure sensitive adhesive closure according to the preamble of patent claim 1.
  • the second adhesive surface is arranged on the flap directly below the adhesive layer.
  • the flap is folded in and the adhesive layer is glued to the second adhesive surface.
  • the main disadvantage of this solution is that the fold in the flap means that after the pressure-sensitive adhesive layer has been detached from the second adhesive surface, the flap remains inevitably bent.
  • the envelope is closed, it will come to lie more or less crookedly on the back of the envelope, if the skillful tightening of the flap and parallel placement always apply the adhesive zone on the first adhesive surface does not work properly for the user. This can also result in the flap sticking to the contents and three-dimensional warping of the flap can occur.
  • the fold in the flap is also difficult to achieve in terms of production technology, since the adhesive of the pressure-sensitive adhesive layer must be applied before the fold.
  • the second adhesive surface on the flap means that the pressure-sensitive adhesive layer and thus also the adhesive on the first adhesive surface must be more than the distance from the second adhesive surface from the actual folding fold of the flap, as a result of which a considerable height on the side folds remains open without being glued and allows access to unwanted tampering with the contents of the envelope.
  • the second adhesive surface is provided on a fold-over flap formed on the back of the envelope.
  • the pressure-sensitive adhesive layer and thus also the adhesive on the first adhesive surface must be more than the width of the flap away from the actual flap of the flap. It is particularly disadvantageous, however, that the contents of the letter have to be pushed directly past the adhesive layer into the envelope, which in turn can result in the contents sticking to the adhesive layer.
  • GB-A-492339 discloses an envelope in which a first pressure-sensitive adhesive layer is provided on the inside of the flap and a second pressure-sensitive adhesive layer on the back of the envelope on the outside of a further flap.
  • the two layers of adhesive kelly should be designed so that they only stick to one another, but do not have any adhesive effect on other surfaces, such as, in particular, the other paper surfaces of the envelope.
  • the flap When ready for use, the flap is supplied under another flap, but is not inserted into the envelope itself, ie under the two side flaps. The cover must therefore be opened to fill the envelope.
  • the side flaps are only glued to about half the height of the envelope. The envelope is therefore practically half open on the side when closed and allows undesired manipulation of its contents. Both layers of pressure sensitive adhesive are unprotected. There is therefore a risk that they will become unusable after a relatively short time. Since they must not stick to normal paper, the glue used must be relatively weak.
  • the envelope of Fig. 1 has a rectangular pocket 1 with a molded on the upper edge of its front Flap 2 open.
  • the closure flap 2 is inserted into the pocket 1.
  • the envelope is ready to use.
  • the desired content for example a letter 3, can be inserted directly, as shown in FIG. 2.
  • the flap 2 is pulled out (FIG. 3) and the envelope is closed in the usual way by gluing the flap on the outside on the back of the envelope (FIG. 4).
  • the flap is provided on the inside with a pressure-sensitive adhesive layer 4, which is outlined in dashed lines in FIG. 3.
  • a pressure-sensitive adhesive layer 4 which is outlined in dashed lines in FIG. 3.
  • the flap 2 with this pressure-sensitive adhesive layer 4 is glued on the inside to the front of the envelope, specifically to the adhesive surface 5 which can be seen in FIG. 5 and is surrounded by dashed lines the flap 2 is glued when the envelope is closed, is framed with dots in FIGS. 1 to 3 and is designated by 6 in each case.
  • the surface properties of the two adhesive surfaces 5 and 6 are selected to be essentially the same and the separation value of the pressure-sensitive adhesive layer 4 is adjusted in a known manner so that it is light, residue-free and non-destructive both adhesive surfaces can be removed again. In this case, the adhesive surfaces 5 and 6 do not need special treatment.
  • the envelope cannot be opened non-destructively.
  • special treatment e.g. Siliconizing the inner adhesive surface 5.
  • Pressure sensitive adhesive can be removed from a silicone surface much more easily than e.g. from a paper surface.
  • the separation value of the pressure-sensitive adhesive layer is to be set such that the pressure-sensitive adhesive layer 4 can be easily removed from the inner adhesive surface 5, but not from the outer adhesive surface 6, without residue or destruction.
  • the inner adhesive surface 5 can be siliconized by direct silicone application to the material of the envelope or by sticking on a siliconized separating strip, as shown in FIG. 6.
  • the siliconized separating strip can e.g. be a siliconized paper or film strip.
  • Fig. 6 it is designated 7.
  • the flap When the flap is pulled off, it must not come loose from the inside of the envelope, so it must adhere more firmly to it than the adhesive layer on its silicone surface.
  • the separating strip 7 is only shown not completely glued on in order to emphasize it somewhat in the drawing.
  • the separating strip 7, as shown in FIG. 7, can also be part of the transparent film covering the window 8 in the case of so-called window envelopes, which is then simply somewhat larger than usual the adhesive surface 5 must be dimensioned with overlapping.
  • the simplest is the window film on its entire surface and not only siliconized in the area of the adhesive surface 5.
  • the pressure-sensitive adhesive layer is better protected from oxidation than before; the envelopes remain usable longer.
  • the silicone together with the release film can be separated from the paper pulp during recycling and therefore has no negative influence on the paper quality.
  • the production of the envelopes according to the invention is no more complex than the known envelopes; more material is not needed than before.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Credit Cards Or The Like (AREA)
  • Making Paper Articles (AREA)

Abstract

The envelope has an adhesive closure, wherein a flap (2), which is coated with an adhesive layer (4), can be stuck to a sticking surface of the envelope to close the latter. In the ready-for-use state, however, the adhesive layer is stuck to a further sticking surface (5) of the envelope, from which it can easily be released without destruction or residue. In the case of envelopes which can only be used once, this surface is silicone-treated, either directly or by means of a stuck-on, silicone-treated separation strip. Said surface can be provided on the inside of the front of the envelope, on the flap itself or on the outside of the back of the envelope. No waste occurs when the envelope is sealed. <IMAGE>

Description

Technisches GebietTechnical field

Die vorliegende Erfindung betrifft einen Briefumschlag mit Haftklebeverschluss gemäss dem Oberbegriff des Patentanspruchs 1.The present invention relates to an envelope with a pressure sensitive adhesive closure according to the preamble of patent claim 1.

Stand der TechnikState of the art

Zwei Briefumschläge dieser Art sind z.B.aus der US-A-2,367,440 bekannt.Two envelopes of this type are known, for example, from US-A-2,367,440.

Bei einem der beiden bekannten Briefumschläge ist die zweite Anklebefläche auf der Klappe direkt unterhalb der Haftklebeschicht angeordnet. Im noch unverschlossenen Zustand des Briefumschlags ist die Klappe in sich gefalzt und die Haftklebeschicht an der zweiten Anklebefläche angeklebt. Nachteilig an dieser Lösung ist vor allem, dass durch den Falz in der Klappe die Klappe nach dem Ablösen der Haftklebeschicht von der zweiten Anklebefläche praktisch unvermeidlich in sich geknickt bleibt. Sie wird dadurch beim Schliessen des Briefumschlags mehr oder weniger schief auf der Umschlags-Rückseite zu liegen kommen, wenn immer das Geschick erfordernde straffe Anziehen der Klappe und ein paralleles Aufsetzen der Klebezone auf der ersten Anklebefläche dem Anwender nicht richtig gelingt. Dabei kann es auch zu einem Verkleben der Klappe mit dem Inhalt kommen und es können dreidimensionale Verwerfungen der Klappe auftreten. Der Falz in der Klappe ist herstellungstechnisch auch schwierig zu realisieren, da der Kleber der Haftklebeschicht vor dem Falzen aufgebracht werden muss. Weiter führt die zweite Anklebefläche auf der Klappe dazu, dass die Haftklebeschicht und damit auch die Verklebung auf der ersten Anklebefläche um mehr als die Distanz der zweiten Anklebefläche von dem eigentlichen Umlegefalz der Klappe entfernt sein muss, wodurch eine beträchtliche Höhe auf den Seitenfalzungen unverklebt offen bleibt und zu unerwünschten Manipulationen am Inhalt des Briefumschlags Zugang lässt.In one of the two known envelopes, the second adhesive surface is arranged on the flap directly below the adhesive layer. When the envelope is not yet sealed, the flap is folded in and the adhesive layer is glued to the second adhesive surface. The main disadvantage of this solution is that the fold in the flap means that after the pressure-sensitive adhesive layer has been detached from the second adhesive surface, the flap remains inevitably bent. As a result, when the envelope is closed, it will come to lie more or less crookedly on the back of the envelope, if the skillful tightening of the flap and parallel placement always apply the adhesive zone on the first adhesive surface does not work properly for the user. This can also result in the flap sticking to the contents and three-dimensional warping of the flap can occur. The fold in the flap is also difficult to achieve in terms of production technology, since the adhesive of the pressure-sensitive adhesive layer must be applied before the fold. Furthermore, the second adhesive surface on the flap means that the pressure-sensitive adhesive layer and thus also the adhesive on the first adhesive surface must be more than the distance from the second adhesive surface from the actual folding fold of the flap, as a result of which a considerable height on the side folds remains open without being glued and allows access to unwanted tampering with the contents of the envelope.

Bei dem anderen bekannten Briefumschlag ist die zweite Anklebefläche auf einer auf der Umschlag-Rückseite angeformten Umlegeklappe vorgesehen. Auch hier muss die Haftklebeschicht und damit auch die Verklebung auf der ersten Anklebefläche um mehr als die Breite der Umlegeklappe von dem eigentlichen Umlegefalz der Klappe entfernt sein. Besonders nachteilig ist jedoch, dass der Briefinhalt unmittelbar an Haftklebeschicht vorbei in den Briefumschlag eingeschoben werden muss, wodurch es wiederum zu einem Verkleben des Inhalts mit der Haftklebeschichtkommen kann.In the other known envelope, the second adhesive surface is provided on a fold-over flap formed on the back of the envelope. Here, too, the pressure-sensitive adhesive layer and thus also the adhesive on the first adhesive surface must be more than the width of the flap away from the actual flap of the flap. It is particularly disadvantageous, however, that the contents of the letter have to be pushed directly past the adhesive layer into the envelope, which in turn can result in the contents sticking to the adhesive layer.

Die GB-A-492339 offenbart einen Briefumschlag, bei dem eine erste Haftklebeschicht auf der Innenseite der Verschlussklappe und eine zweite Haftklebeschicht auf der Umschlag-Rückseite aussenseitig an einer weiteren Klappe vorgesehen ist. Die beiden Haftkelebeschichten sollen so ausgebildet sein, dass sie lediglich aneinander kleben, gegen andere Flächen, wie insbesondere die übrigen Papieroberflächen des Briefumschlags jedoch keine Klebewirkung entfalten. Im gebrauchsfertigen Zustand ist die Verschlussklappe unter einer weiteren Klappe versorgt, dabei jedoch nicht in den Briefumschlag selbst, d.h. unter die beiden Seitenklappen eingesteckt. Zum Füllen des Briefumschlages muss die Verschlussklappe deshalb geöffnet werden. Die Seitenklappen sind auch nur etwa bis zur halben Höhe des Briefumschlags verleimt. Der Briefumschlags ist deshalb im verschlossen Zustand seitlich praktisch halb offen und gestattet unerwünschte Manipulationen an seinem Inhalt. Beide Haftklebeschichten sind ungeschützt. Es besteht deshalb die Gefahr, dass sie nach verhältnismässig kurzer Zeit bereits unbrauchbar werden. Da sie zudem nicht an normalen Papier kleben dürfen, muss der verwendete Kleber relativ schwach sein.GB-A-492339 discloses an envelope in which a first pressure-sensitive adhesive layer is provided on the inside of the flap and a second pressure-sensitive adhesive layer on the back of the envelope on the outside of a further flap. The two layers of adhesive kelly should be designed so that they only stick to one another, but do not have any adhesive effect on other surfaces, such as, in particular, the other paper surfaces of the envelope. When ready for use, the flap is supplied under another flap, but is not inserted into the envelope itself, ie under the two side flaps. The cover must therefore be opened to fill the envelope. The side flaps are only glued to about half the height of the envelope. The envelope is therefore practically half open on the side when closed and allows undesired manipulation of its contents. Both layers of pressure sensitive adhesive are unprotected. There is therefore a risk that they will become unusable after a relatively short time. Since they must not stick to normal paper, the glue used must be relatively weak.

Bekannt und in breitem Einsatz sind weiter Briefumschläge, bei denen die auf der Klappen-Innenseite vorgesehene Haftklebeschicht mit einem silikonisierten Schutzstreifen abgedeckt ist. Durch den Schutzstreifen wird ein ungewolltes Ankleben der Verschlussklappe an der Umschlag-Rückseite verhindert, das Füllen des Briefumschlags erleichtert (kein Verkleben mit dem Inhalt) und die Haftklebeschicht vor diversen Einwirkungen (vor allem vor dem Austrockenen) geschützt. Üblicherweise ist der Trennwert der Haftklebeschicht so eingestellt, dass sich zwar der Schutzstreifen leicht von der Klappe, diese aber nach dem Verschliessen des Umschlags von dessen Rückseite nicht mehr rückstands- und zerstörungsfrei ablösen lässt. Nachteilig bei dieser Art von Briefumschlägen ist vor allem der sich durch den zu entfernenden Schutzstreifen ergebende Abfall beim Verschliessen des Umschlags. Zum Füllen und Verschliessen mussen insbesondere folgende Manipulationen vorgenommen werden:

  • Aufklappen der Klappe;
  • Einschieben des Inhaltes;
  • Entfernen des Schutzstreifens;
  • Zuklappen und Anpressen der Klappe;
  • Entsorgen des entfernten Schutzstreifens.
Envelopes are known and widely used, in which the pressure-sensitive adhesive layer provided on the inside of the flap is covered with a siliconized protective strip. The protective strip prevents the flap from sticking to the back of the envelope, makes it easier to fill the envelope (no sticking to the contents) and protects the pressure-sensitive adhesive layer from various influences (especially from drying out). The separation value of the pressure-sensitive adhesive layer is usually set so that the protective strip can be easily removed from the flap, but after the envelope has been closed from the back of the flap, it can no longer be removed without residue and without destruction. A disadvantage of this type of envelope is especially the waste resulting from the protective strip to be removed when the envelope is closed. The following manipulations must be carried out to fill and close:
  • Open the flap;
  • Inserting the content;
  • Removing the protective strip;
  • Closing and pressing the flap;
  • Dispose of the removed protective strip.

Darstellung der ErfindungPresentation of the invention

Es ist insbesondere Aufgabe der Erfindung, einen Briefumschlag der eingangs genannten Art anzugeben, bei welchem die Haftklebeschicht geschützt ist, welcher beim Füllen und Verschliessen einfacher und sicherer zu handhaben ist, und welcher so ausbildbar ist, dass an seinem Inhalt im verschlossenen Zustand Zerstörungsfrei keine manipulationen vorgenommen werden können. Auch soll beim Verschliessen kein loser, separat zu entsorgender Abfall anfallen.It is a particular object of the invention to provide an envelope of the type mentioned at the outset, in which the pressure-sensitive adhesive layer is protected, which is easier and safer to handle when filling and closing, and which can be designed in such a way that no manipulation of its contents in the closed state is non-destructive can be made. There should also be no loose, separately disposed waste when closing.

Diese Aufgabe wird erfindungsgemäss gelöst durch einen Briefumschlag mit den Merkmalen des Patentanspruchs 1. Vorteilhafte und bevorzugte Ausgestaltungen der Erfindung sind in den abhängigen Ansprüchen gekennzeichnet.This object is achieved according to the invention by an envelope with the features of claim 1. Advantageous and preferred embodiments of the invention are characterized in the dependent claims.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Nachfolgend werden Ausführungsbeispiele der Erfindung im Zusammenhang mit den Figuren der Zeichnung näher erläutert. Es zeigt:

Fig. 1
eine Aufsicht auf die Rückseite eines erfindungsgemässen Briefumschlags im gebrauchsfertigen Zustand mit eingesteckter, an der Umschlags-Vorderseite angeformten Klappe;
Fig. 2
den gleichen Umschlag mit einem teilweise eingesteckten Brief;
Fig. 3
den Umschlag mit herausgezogener geöffneter Klappe, wobei die Haftklebeschicht erkennbar ist;
Fig. 4
den verschlossenen Umschlag.
Fig. 5
in Aufsicht auf seine Innenseite den Umschlag völlig auseinandergefaltet noch vor dem Zusammenkleben, wobei auch die Anklebeschicht, auf der die Haftklebeschicht ablösbar Angeklebt ist, zu erkennen ist;
Fig. 6
in der gleichen Darstellung einen Umschlag mit einem Trennstreifen auf der Anklebeschicht; und
Fig. 7
wieder in dieser Darstellung einen Umschlag mit einem von einer Klarsichtfolie abgedeckten Sichtfenster, die gleichzeitig als Trennstreifen dient.
Exemplary embodiments of the invention are explained in more detail below in connection with the figures of the drawing. It shows:
Fig. 1
a top view of the back of an envelope according to the invention in the ready-to-use state with the flap inserted and molded onto the front of the envelope;
Fig. 2
the same envelope with a partially inserted letter;
Fig. 3
the envelope with the flap open and the adhesive layer visible;
Fig. 4
the sealed envelope.
Fig. 5
when viewed from the inside, the envelope is fully unfolded before being glued together, and the adhesive layer on which the pressure-sensitive adhesive layer can be detached is also visible;
Fig. 6
in the same representation an envelope with a separating strip on the adhesive layer; and
Fig. 7
again in this illustration an envelope with a window covered by a transparent film, which also serves as a dividing strip.

Wege zur Ausführung der ErfindungWays of Carrying Out the Invention

Der Briefumschlag von Fig 1 weist eine rechteckige Tasche 1 mit einer am oberen Rand seiner Vorderseite angeformten Verschlussklappe 2 auf. Er besteht z.B. aus Papier. Die Verschlussklappe 2 ist in die Tasche 1 eingesteckt. Der Briefumschlag ist so unmittelbar gebrauchsfertig. Der gewünschte Inhalt, z.B. ein Brief 3, kann direkt eingeschoben werden, wie dies Fig. 2 zeigt. Nach dem Einschieben des gewünschten Inhalts wird die Klappe 2 herausgezogen (Fig. 3) und der Umschlag in üblicher Weise durch Ankleben der Klappe aussenseitig auf der Umschlags-Rückseite verschlossen (Fig. 4). Zum Ankleben der Klappe 2 auf der Umschlags-Rückseite ist die Klappe innenseitig mit einer Haftklebeschicht 4 versehen, die in Fig. 3 strichliert umrandet ist. Im gebrauchsfertigen Zustand gemäss Fig. 1 ist die Klappe 2 mit dieser Haftklebeschicht 4 innenseitig an der Umschlags-Vorderseite angeklebt und zwar an der in Fig. 5 erkennbaren, strichliert umrandeten Anklebefläche 5. Die Anklebefläche auf der Umschlags-Rückseite, auf der die Haftklebeschicht 4 der Klappe 2 bei verschlossenem Umschlag angeklebt ist, ist in den Figuren 1 bis 3 mit Punkten umrandet und jeweils mit 6 bezeichnet.The envelope of Fig. 1 has a rectangular pocket 1 with a molded on the upper edge of its front Flap 2 open. For example, it is made of paper. The closure flap 2 is inserted into the pocket 1. The envelope is ready to use. The desired content, for example a letter 3, can be inserted directly, as shown in FIG. 2. After inserting the desired content, the flap 2 is pulled out (FIG. 3) and the envelope is closed in the usual way by gluing the flap on the outside on the back of the envelope (FIG. 4). To glue the flap 2 on the back of the envelope, the flap is provided on the inside with a pressure-sensitive adhesive layer 4, which is outlined in dashed lines in FIG. 3. In the ready-to-use state according to FIG. 1, the flap 2 with this pressure-sensitive adhesive layer 4 is glued on the inside to the front of the envelope, specifically to the adhesive surface 5 which can be seen in FIG. 5 and is surrounded by dashed lines the flap 2 is glued when the envelope is closed, is framed with dots in FIGS. 1 to 3 and is designated by 6 in each case.

Sofern erwünscht ist, dass sich der Umschlag mehrfach öffnen und wieder verschliessen lässt, werden die Oberflächeneigenschaften der beiden Anklebeflächen 5 und 6 im wesentlichen gleich gewählt und der Trennwert der Haftklebeschicht 4 in bekannter Weise so eingestellt, dass sich diese leicht, rückstands- und zerstörungsfrei von beiden Anklebeflächen wieder ablösen lässt. Die Anklebeflächen 5 und 6 brauchen in diesem Fall nicht besonders behandelt zu werden.If it is desired that the envelope can be opened and closed several times, the surface properties of the two adhesive surfaces 5 and 6 are selected to be essentially the same and the separation value of the pressure-sensitive adhesive layer 4 is adjusted in a known manner so that it is light, residue-free and non-destructive both adhesive surfaces can be removed again. In this case, the adhesive surfaces 5 and 6 do not need special treatment.

Für die meisten Anwendungen wird es jedoch erwünscht sein, dass sich der Umschlag nicht zerstörungsfrei öffnen lässt. In diesem Fall bedarf es einer besonderen Behandlung, z.B. einer Silikonsierung der inneren Anklebefläche 5. Von einer Silikonoberfläche lässt sich Haftkleber viel leichter ablösen als z.B. von einer Papieroberfläche. Der Trennwert der Haftklebeschicht ist in diesem Fall so einzustellen, dass sich die Haftklebeschicht 4 von der inneren Anklebefläche 5, nicht jedoch von der äusseren Anklebefläche 6 leicht, rückstands- sowie zerstörungsfrei ablösen lässt.For most applications, however, it will be desirable that the envelope cannot be opened non-destructively. In this case special treatment is required, e.g. Siliconizing the inner adhesive surface 5. Pressure sensitive adhesive can be removed from a silicone surface much more easily than e.g. from a paper surface. In this case, the separation value of the pressure-sensitive adhesive layer is to be set such that the pressure-sensitive adhesive layer 4 can be easily removed from the inner adhesive surface 5, but not from the outer adhesive surface 6, without residue or destruction.

Die Silikonisierung der inneren Anklebefläche 5 kann durch direkten Silikonauftrag auf das Material des Umschlags oder durch Aufkleben eines silikonisierten Trennstreifens erfolgen, wie dies Fig. 6 zeigt. Der silikonisierte Trennstreifen kann z.B. ein silikonisierter Papier- oder Folienstreifen sein. In Fig. 6 ist er mit 7 bezeichnet. Er darf sich beim Abziehen der Klappe nicht von der Umschlags-Innenseite mitablösen, muss also fester an dieser haften als die Haftklebeschicht auf seiner Silikonoberfläche. In Fig 6 ist der Trennstreifen 7 lediglich deshalb nicht vollständig aufgeklebt dargestellt, um ihn zeichnerisch etwas hervorzuheben.The inner adhesive surface 5 can be siliconized by direct silicone application to the material of the envelope or by sticking on a siliconized separating strip, as shown in FIG. 6. The siliconized separating strip can e.g. be a siliconized paper or film strip. In Fig. 6 it is designated 7. When the flap is pulled off, it must not come loose from the inside of the envelope, so it must adhere more firmly to it than the adhesive layer on its silicone surface. In FIG. 6, the separating strip 7 is only shown not completely glued on in order to emphasize it somewhat in the drawing.

Der Trennstreifen 7 kann, wie dies Fig. 7 zeigt, bei sog. Fensterumschlägen auch Teil der das Fenster 8 abdeckenden Klarsichtfolie sein, die dann einfach etwas grösser als üblich die Anklebfläche 5 mit überdeckend, bemessen sein muss. Am einfachsten ist die Fensterfolie auf ihrer ganzen Oberfläche und nicht lediglich im Bereich der Anklebefläche 5 silikonisiert.The separating strip 7, as shown in FIG. 7, can also be part of the transparent film covering the window 8 in the case of so-called window envelopes, which is then simply somewhat larger than usual the adhesive surface 5 must be dimensioned with overlapping. The simplest is the window film on its entire surface and not only siliconized in the area of the adhesive surface 5.

Bei dem erfindungsgemässen Briefumschlag muss in mehrfach vorteilhafter Weise kein Schutzfolienstreifen entfernt und als Abfall gesondert entsorgt werden. Selbst wenn ein Trennstreifen verwendet ist, bleibt dieser fest und bei verschlossenem Umschlag von aussen nicht sichtbar mit diesem verbunden. Gegenüber den eingangs erwähnten bekannten Umschlägen mit Haftklebeverschluss ist die Handhabung beim Füllen und Verschliessen zudem dadurch vereinfacht, dass ein Öffnen der Klappe entfällt, was vor allem bei grösseren Briefsendungen ins Gewicht fallen kann.In the case of the envelope according to the invention, no protective film strip has to be removed in several advantageous ways and disposed of separately as waste. Even if a separating strip is used, it remains firm and is not visibly connected to it when the envelope is closed. Compared to the known envelopes with a pressure-sensitive adhesive closure mentioned at the outset, handling when filling and closing is also simplified in that there is no need to open the flap, which can be particularly important in the case of larger letters.

Durch die innenseitig an der Umschlags-Vorderseite angeklebte Klappe ist die Haftklebeschicht besser als bisher vor Oxidation geschützt; die Umschläge bleiben dadurch länger gebrauchsfähig. Bei der Verwendung einer silikonisierten Trennfolie kann das Silikon zusammen mit der Trennfolie beim Recycling aus der Papiermasse abgetrennt werden und hat dadurch keinen negativen Einfluss auf die Papierqualität Die Herstellung der erfindungsgemässen Umschläge ist nicht aufwendiger als der bekannten Umschläge; auch wird nicht mehr Material als bisher schon benötigt.Due to the flap glued to the inside of the front cover, the pressure-sensitive adhesive layer is better protected from oxidation than before; the envelopes remain usable longer. When using a siliconized release film, the silicone together with the release film can be separated from the paper pulp during recycling and therefore has no negative influence on the paper quality. The production of the envelopes according to the invention is no more complex than the known envelopes; more material is not needed than before.

Claims (5)

  1. Envelope with a self-adhesive closure, in which a flap (2) coated with a self-adhesive coating (4) for the purpose of sealing the envelope is stuck to a first adhesive surface (6) of the envelope and which is not coated with a self-adhesive coating, the self-adhesive coating (4) being stuck to a second adhesive surface (5) of the envelope and the separation value of the self-adhesive coating with respect to the surface characteristics of the second adhesive surface (5) being set in such a way that the flap (2), together with the self-adhesive coating (4), can be removed in destruction-free and residue-free manner therefrom and restuck to the first adhesive surface (6) and in which the flap (2) is shaped onto the front of the envelope, characterized in that the second adhesive surface (5) is placed internally on the front of the envelope and the flap (29) inserted in the envelope is stuck thereto.
  2. Envelope according to claim 1, characterized in that the surface characteristics of the first and second adhesive surfaces (6 or 5) are chosen differently and that the separation value of the self-adhesive coating is set in such a way that the flap (2) can be removed jointly with the self-adhesive coating (4) in non-destructive, residue-free manner from the second adhesive surface (5), but not from the first adhesive surface (6).
  3. Envelope according to one of the claims 1 and 2, characterized in that the second adhesive surface (5) is siliconized.
  4. Envelope according to one of the claims 1 to 3, characterized in that the second adhesive surface (5) is provided with a siliconized separating strip (7), which remains on said surface on removing the flap (2).
  5. Envelope according to claim 4, characterized in that it has a viewing window (8) covered by a transparent film and that the siliconized separating strip (7) forms part of said transparent film.
EP91111271A 1990-07-24 1991-07-06 Envelope with adhesive closure Expired - Lifetime EP0468256B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91111271T ATE97873T1 (en) 1990-07-24 1991-07-06 ENVELOPE WITH ADHESIVE CLOSURE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2448/90 1990-07-24
CH2448/90A CH681716A5 (en) 1990-07-24 1990-07-24

Publications (2)

Publication Number Publication Date
EP0468256A1 EP0468256A1 (en) 1992-01-29
EP0468256B1 true EP0468256B1 (en) 1993-12-01

Family

ID=4234065

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91111271A Expired - Lifetime EP0468256B1 (en) 1990-07-24 1991-07-06 Envelope with adhesive closure

Country Status (4)

Country Link
EP (1) EP0468256B1 (en)
AT (1) ATE97873T1 (en)
CH (1) CH681716A5 (en)
DE (1) DE59100658D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6406586B1 (en) * 1997-12-08 2002-06-18 Luis Joaquin Rodriguez Fastening method and stationery articles produced thereby
DE202020000658U1 (en) * 2020-02-18 2020-03-16 bestpac GmbH Packaging containers made of paper, in particular shipping containers made of paper

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB492399A (en) * 1937-05-01 1938-09-20 Daniel Morgan Skeins Improvements in or relating to paper and the like envelopes
US2118706A (en) * 1937-06-14 1938-05-24 Us Envelope Co Dry-sealing envelope
US2384223A (en) * 1942-02-09 1945-09-04 Wilbur Eliza Ellen Wrapper
US2367440A (en) * 1942-10-05 1945-01-16 Internat Plastic Corp Self-sealing paper envelope

Also Published As

Publication number Publication date
ATE97873T1 (en) 1993-12-15
CH681716A5 (en) 1993-05-14
DE59100658D1 (en) 1994-01-13
EP0468256A1 (en) 1992-01-29

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