EP0455615B1 - Versandbrief und Verfahren zu seiner Herstellung - Google Patents

Versandbrief und Verfahren zu seiner Herstellung Download PDF

Info

Publication number
EP0455615B1
EP0455615B1 EP91850095A EP91850095A EP0455615B1 EP 0455615 B1 EP0455615 B1 EP 0455615B1 EP 91850095 A EP91850095 A EP 91850095A EP 91850095 A EP91850095 A EP 91850095A EP 0455615 B1 EP0455615 B1 EP 0455615B1
Authority
EP
European Patent Office
Prior art keywords
adhesive
sensitive adhesive
pressure sensitive
paper
moisture sensitive
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
EP91850095A
Other languages
English (en)
French (fr)
Other versions
EP0455615A1 (de
Inventor
Isoa Minami
Kjell Ab Ekonomitryck Olsson
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.)
EKONOMITRYCK AB
Original Assignee
EKONOMITRYCK AB
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 EKONOMITRYCK AB filed Critical EKONOMITRYCK AB
Publication of EP0455615A1 publication Critical patent/EP0455615A1/de
Application granted granted Critical
Publication of EP0455615B1 publication Critical patent/EP0455615B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B42D5/00—Sheets united without binding to form pads or blocks
    • B42D5/02—Form sets
    • B42D5/023—Continuous form sets
    • B42D5/025—Mailer assemblies

Definitions

  • the present invention relates to a mailer form or similar form or product made from paper, which form or product is intended to be sealed by means of an adhesive or glue applied thereupon. More specifically the invention relates to a mailer form or product of the type which when unfolded is provided with adhesive strips along the outer edges thereof and which is sealed by a folding operation where said adhesive strips are brought into contact with each other. Furthermore, such forms or products are often perforated, which perforations are torn away together with the adhesive sealings when one wishes to study the contents of said sealed products. The invention also relates to a process for the manufacture of a mailer form or similar product of the type referred to above.
  • Mailer forms or other forms of the type referred to above are today well known products as e.g. known from US-A-4 784 317, viz. in the form of separate forms or so called chain forms, which after having been provided with the requisite information are typically sealed by means of form sealing machines known per se. Therefore, neither the general structure or nature of such forms nor the constructions of such sealing machines need be further described here.
  • the present invention provides a solution to the above-mentioned problem.
  • a major purpose of the invention thus is to accomplish a mailer form or similar, which can be sealed in such a way that it is not possible to open the sealing in an invisible way and then reseal the same.
  • Another purpose of the invention is to provide a mailer form or similar, which is in practice useful in connection with the laser printing technique, viz. partly at the high temperatures required at said technique, partly in connection with the use of silicon oil.
  • Still another purpose of the invention is to provide a specific process by means of which mailer forms of the above-mentioned type and with the above-mentioned properties can be manufactured.
  • the mailer form according to the present invention is characterized in that those adhesive strips by means of which the sealing is accomplished comprise a first pressure sensitive adhesive layer applied onto the paper and a second moisture sensitive adhesive layer applied on top thereof.
  • pressure sensitive and moisture sensitive in connection with the adhesives or glues referred to, it should be noted that said terms are utilized in those meanings which are previously known per se.
  • the pressure sensitive adhesive relates to an adhesive where a relatively high pressure is applied to accomplish contact adhesive to adhesive
  • the moisture sensitive adhesive relates to an adhesive where moisture or vapour, preferably in the atomized form, is applied to moisten and soften the adhesive referred to.
  • the pressure sensitive adhesive is natural rubber-based adhesive, i.e. a natural rubber latex.
  • the moisture sensitive adhesive is an adhesive based on an ethylene-vinylacetate copolymer.
  • the invention also relates to a process for the manufacture of the mailer form claimed, said process being characterized by first coating the paper with a layer of the pressure sensitive adhesive and then applying a second layer of the moisture sensitive adhesive thereupon.
  • both adhesive layers are applied in the form of aqueous products or solutions.
  • aqueous solutions are preferably ammonium-based, especially such that the ammonium content thereof is at most 10 percent by weight or more preferably at most 7 percent by weight of ammonium.
  • the desired two-layer-configuration of adhesives is obtained in a very effective way by drying the two adhesive layers by means of radio frequency drying.
  • a radio frequency drying operation is preferably performed by means of a short wave-radio frequency drying.

Landscapes

  • Adhesives Or Adhesive Processes (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Adhesive Tapes (AREA)
  • Credit Cards Or The Like (AREA)
  • Making Paper Articles (AREA)

Claims (9)

  1. Versandbrief od.dgl., der aus Papier hergestellt und vorgesehen ist, durch darauf aufgetragenen Klebstoff verschlossen zu werden, insbesondere ein Versandbrief des Typs, der in nicht gefaltetem Zustand mit Klebstoffstreifen längs seiner Aussenkanten versehen ist, wobei die Kanten im allgemeinen perforiert sind und durch Falten verschlossen werden, so dass die genannten Klebstoffstreifen in Berührung miteinander gebracht werden, dadurch gekennzeichnet, dass die Klebstoffstreifen eine erste, auf das Papier aufgetragene, druckempfindliche Klebstoffschicht und eine zweite, auf die erste Schicht aufgetragene, feuchtigkeitsempfindliche zweite Klebstoffschicht umfassen.
  2. Versandbrief nach Anspruch 1, dadurch gekennzeichnet, dass der druckempfindliche Klebstoff ein Klebstoff auf Naturkautschukbasis ist.
  3. Versandbrief nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der feuchtigkeitsempfindliche Klebstoff ein Klebstoff auf Ethylen-Vinylacetat-Copolymerisat-Basis ist.
  4. Versandbrief nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er von dem Typ ist, der in Laserdruckern verwendet wird, welche Siliconöl als Reinigungs- und/oder Schmiermittel benutzen.
  5. Verfahren zur Herstellung eines Versandbriefs nach Anspruch 1, dadurch gekennzeichnet, dass erst das Papier mit einer Schicht aus druckempfindlichem Klebstoff versehen wird und danach eine zweite Schicht aus feuchtigkeitsempfindlichem Klebstoff aufgetragen wird.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass die beiden Klebstoffschichten in Form von wässerigen Lösungen aufgetragen werden, vorzugsweise wässerige Lösungen auf Ammoniakbasis mit höchstens 10 Gew.-% Ammoniak.
  7. Verfahren nach einem der Ansprüche 5-6, dadurch gekennzeichnet, dass die beiden Klebstoffschichten durch Radiofrequenztrocknen, vorzugsweise Kurzwellenradiofrequenztrocknen, getrocknet werden.
  8. Verfahren nach einem der Ansprüche 5-7, dadurch gekennzeichnet, dass der druckempfindliche Klebstoff ein Klebstoff auf Naturkautschukbasis ist.
  9. Verfahren nach einem der Ansprüche 5-8, dadurch gekennzeichnet, dass der feuchtigkeitsempfindliche Klebstoff ein Klebstoff auf Ethylen-Vinylacetat-Basis ist.
EP91850095A 1990-04-25 1991-04-17 Versandbrief und Verfahren zu seiner Herstellung Expired - Lifetime EP0455615B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9001492A SE9001492L (sv) 1990-04-25 1990-04-25 Blankett och foerfarande
SE9001492 1990-04-25

Publications (2)

Publication Number Publication Date
EP0455615A1 EP0455615A1 (de) 1991-11-06
EP0455615B1 true EP0455615B1 (de) 1994-08-17

Family

ID=20379292

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91850095A Expired - Lifetime EP0455615B1 (de) 1990-04-25 1991-04-17 Versandbrief und Verfahren zu seiner Herstellung

Country Status (6)

Country Link
EP (1) EP0455615B1 (de)
AT (1) ATE110032T1 (de)
DE (1) DE69103466D1 (de)
FI (1) FI911989A (de)
NO (1) NO911633L (de)
SE (1) SE9001492L (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6500260B2 (en) 1993-02-19 2002-12-31 Minnesota Mining & Mfg Apparatus for applying a coating material to sheets
US6551654B1 (en) 1994-08-17 2003-04-22 3M Innovative Properties Company Apparatus and method for applying coating materials to individual sheet members

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5885722A (en) * 1994-02-15 1999-03-23 Minnesota Mining And Manufacturing Method for applying coating materials to overlapped individuals sheets
KR19990082493A (ko) * 1996-02-16 1999-11-25 스프레이그 로버트 월터 개별 시트 부재에 코팅 재료를 도포하는 장치 및 방법

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784317B1 (en) * 1987-06-17 1995-10-31 Avery International Corp One piece mailer for laser printer
DE9006788U1 (de) * 1990-06-16 1990-08-23 Awa Couvert August Wegener Gmbh + Co, 3220 Alfeld, De

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6500260B2 (en) 1993-02-19 2002-12-31 Minnesota Mining & Mfg Apparatus for applying a coating material to sheets
US6551654B1 (en) 1994-08-17 2003-04-22 3M Innovative Properties Company Apparatus and method for applying coating materials to individual sheet members

Also Published As

Publication number Publication date
FI911989A0 (fi) 1991-04-24
NO911633D0 (no) 1991-04-24
DE69103466D1 (de) 1994-09-22
ATE110032T1 (de) 1994-09-15
FI911989A (fi) 1991-10-26
NO911633L (no) 1991-10-28
SE9001492L (sv) 1991-10-26
EP0455615A1 (de) 1991-11-06
SE9001492D0 (sv) 1990-04-25

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