EP0468256B1 - Briefumschlag mit Haftklebeverschluss - Google Patents

Briefumschlag mit Haftklebeverschluss 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
Authority
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
Application number
EP91111271A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0468256A1 (de
Inventor
Jules Fischer
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.)
Folien Fischer AG
Original Assignee
Folien Fischer AG
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 Folien Fischer AG filed Critical Folien Fischer AG
Priority to AT91111271T priority Critical patent/ATE97873T1/de
Publication of EP0468256A1 publication Critical patent/EP0468256A1/de
Application granted granted Critical
Publication of EP0468256B1 publication Critical patent/EP0468256B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D27/00—Envelopes or like essentially-rectangular flexible containers for postal or other purposes having no structural provision for thickness of contents
    • B65D27/12—Closures
    • B65D27/14—Closures using adhesive applied to integral parts, e.g. flaps
    • B65D27/16—Closures 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Credit Cards Or The Like (AREA)
  • Making Paper Articles (AREA)
EP91111271A 1990-07-24 1991-07-06 Briefumschlag mit Haftklebeverschluss Expired - Lifetime EP0468256B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91111271T ATE97873T1 (de) 1990-07-24 1991-07-06 Briefumschlag mit haftklebeverschluss.

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=4234065

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91111271A Expired - Lifetime EP0468256B1 (de) 1990-07-24 1991-07-06 Briefumschlag mit Haftklebeverschluss

Country Status (4)

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

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 (de) * 2020-02-18 2020-03-16 bestpac GmbH Verpackungsbehältnis aus Papier, insbesondere Versandbehältnis aus Papier

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
CH681716A5 (enrdf_load_stackoverflow) 1993-05-14
ATE97873T1 (de) 1993-12-15
EP0468256A1 (de) 1992-01-29
DE59100658D1 (de) 1994-01-13

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