SE420749B - USE OF AN OXIDATION IMPREGNATED PAPER SHEET WITH ROUGH SURFACE FOR PYROLYTIC DESTRUCTION OF DOCUMENTS - Google Patents

USE OF AN OXIDATION IMPREGNATED PAPER SHEET WITH ROUGH SURFACE FOR PYROLYTIC DESTRUCTION OF DOCUMENTS

Info

Publication number
SE420749B
SE420749B SE8001861A SE8001861A SE420749B SE 420749 B SE420749 B SE 420749B SE 8001861 A SE8001861 A SE 8001861A SE 8001861 A SE8001861 A SE 8001861A SE 420749 B SE420749 B SE 420749B
Authority
SE
Sweden
Prior art keywords
documents
rough surface
oxidation
paper sheet
impregnated paper
Prior art date
Application number
SE8001861A
Other languages
Swedish (sv)
Other versions
SE8001861L (en
Inventor
A Kannel
Original Assignee
Norabel Ab
Siemens Elema 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 Norabel Ab, Siemens Elema Ab filed Critical Norabel Ab
Priority to SE8001861A priority Critical patent/SE420749B/en
Priority to EP81850028A priority patent/EP0035980A1/en
Publication of SE8001861L publication Critical patent/SE8001861L/en
Publication of SE420749B publication Critical patent/SE420749B/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/02—Chemical or biochemical treatment
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C13/00—Details; Accessories
    • A45C13/18—Devices to prevent theft or loss of purses, luggage or hand carried bags
    • A45C13/24—Devices for sound-producing, piercing, gas-discharging, or the like
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/0092—Post-treated paper
    • D21H5/0095—Post-treated paper with means capable of destructing or weakening the paper structure, e.g. cellulose decomposing agents
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05G—SAFES OR STRONG-ROOMS FOR VALUABLES; BANK PROTECTION DEVICES; SAFETY TRANSACTION PARTITIONS
    • E05G1/00—Safes or strong-rooms for valuables
    • E05G1/14—Safes or strong-rooms for valuables with means for masking or destroying the valuables, e.g. in case of theft

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paper (AREA)

Description

8001861-7 . 2 fortplantas samt 2) ledas från reaktionszonen in i det in- tilliggande dokumentet och pyrolysera detta. Om värmeledning- en enligt moment 2 sker för lätt kommer värmeledningen enligt moment l att minska och reaktionen att avstanna då temperatu- 5- ren i pyroapperet framför zonen (snitt A-A i fig. 1) sjunker eunder antändningstemperaturen. Förhållandet illustreras i fig. l. Samma värmemängd utvecklas i bägge fallen, men temperaturen i snitt A-A är högre i fall lb, vilket ger stabilare reaktions- ZOII. 10. En ytterligare fördel med den grova ytan framkommer vid studie av de i reaktionszonen utvecklade heta gaserna: Om ytan på pyropapperet är grov, bildas kanaler mellan den solida de- len av pyropapperet och de omgivande slätare dokumenten. I reaktionszonen utvecklas heta gaser. De heta gaserna kan nu 15. strömma i de bildade kanalerna från reaktionszonen mot den oreagerade delen av pyropapperet. Av kanalernas begränsande yta utgörs den största andelen av pyropnppev, medan en_míndre andel utgörs av det slätare dokumentet. Detta gör att yärmen i de heta strömmande gaserna lättare överförs till pyropappe- 20. ret (i snitt B-B i fig. 1) än till dokumentet och resultatet blir att pyropapperet lättare når sin antändningstemperatur framför reaktionszonen. 8001861-7. 2 is propagated and 2) is led from the reaction zone into the adjacent document and pyrolyzed. If the heat conduction according to step 2 is too light, the heat conduction according to step 1 will decrease and the reaction will stop when the temperature in the pyroapper in front of the zone (section A-A in Fig. 1) drops below the ignition temperature. The relationship is illustrated in Fig. 1. The same amount of heat develops in both cases, but the temperature in section A-A is higher in case 1b, which gives a more stable reaction ZOII. A further advantage of the rough surface emerges from the study of the hot gases developed in the reaction zone: If the surface of the pyro paper is rough, channels are formed between the solid part of the pyro paper and the surrounding smoother documents. Hot gases are evolved in the reaction zone. The hot gases can now flow in the formed channels from the reaction zone towards the unreacted part of the pyro paper. Of the limiting surface of the channels, the largest proportion is pyropnpev, while a smaller proportion is the smoother document. This makes the heat in the hot flowing gases easier to transfer to the pyro paper (section B-B in Fig. 1) than to the document and the result is that the pyro paper more easily reaches its ignition temperature in front of the reaction zone.

Det förstörande arket kan bestå av en oxiderbar matris med grov yta, preparerad med oxidationsmedel. T.ex. grovt I 25. papper preparerat med oxidationsmedel och bindemedel.The destructive sheet may consist of an oxidizable matrix with a rough surface, prepared with oxidizing agent. For example. coarse I 25. paper prepared with oxidizing agents and binders.

Figur l visar två fall där ett pyropapper är inlagt mellan två dokument. I figur la har pyropapper med slät yta använts och i figur lb har pyropapper med grov yta använts.Figure 1 shows two cases where a pyro paper is inserted between two documents. In figure 1a pyro paper with a smooth surface has been used and in figure 1b pyro paper with a rough surface has been used.

I figuren visas snitten genom dokumenten och pyropapperen. 30, Temperaturprofilen i snittet A-A är markerad med smal pil- höjd och böjd streckad linje. Tjock pil anger reaktionszonens rörelseríktning. l = pyropapper med slät yta pyropapper med grov yta dokument kanal reaktionszon 35.The figure shows the sections through the documents and pyro papers. 30, The temperature profile in section A-A is marked with a narrow arrow height and a curved dashed line. Thick arrow indicates the direction of movement of the reaction zone. l = smooth surface pyropaper coarse surface pyropaper document channel reaction zone 35.

C\\7l-R\.N|\) lll! ll reagerat material Temp. = temperaturaxel q0_ Ti = tändtemperatur TC = ursprungstemperaturen i opåverkat materialC \\ 7l-R \ .N | \) lll! ll reacted material Temp. = temperature axis q0_ Ti = ignition temperature TC = the original temperature in unaffected material

Claims (1)

1. 8001861-7 3 Patentkrav ' Användning av ett pappersark med grov yta, som genom impregneríng med ett oxidationsmedel erhållit förmåga att efter antändning upprätthålla en glödfront längs arket, för . pyrolytisk destruktion av i kontakt med arket placerade doku- ment med i jämförelse med arket slätare yta.Use of a coarse surface paper sheet which, by impregnation with an oxidizing agent, has acquired the ability to maintain a glow front along the sheet after ignition, for. pyrolytic destruction of documents placed in contact with the sheet with a smoother surface in comparison with the sheet.
SE8001861A 1980-03-10 1980-03-10 USE OF AN OXIDATION IMPREGNATED PAPER SHEET WITH ROUGH SURFACE FOR PYROLYTIC DESTRUCTION OF DOCUMENTS SE420749B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8001861A SE420749B (en) 1980-03-10 1980-03-10 USE OF AN OXIDATION IMPREGNATED PAPER SHEET WITH ROUGH SURFACE FOR PYROLYTIC DESTRUCTION OF DOCUMENTS
EP81850028A EP0035980A1 (en) 1980-03-10 1981-02-20 Method and means for pyrolytic destruction of documents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8001861A SE420749B (en) 1980-03-10 1980-03-10 USE OF AN OXIDATION IMPREGNATED PAPER SHEET WITH ROUGH SURFACE FOR PYROLYTIC DESTRUCTION OF DOCUMENTS

Publications (2)

Publication Number Publication Date
SE8001861L SE8001861L (en) 1981-09-11
SE420749B true SE420749B (en) 1981-10-26

Family

ID=20340469

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8001861A SE420749B (en) 1980-03-10 1980-03-10 USE OF AN OXIDATION IMPREGNATED PAPER SHEET WITH ROUGH SURFACE FOR PYROLYTIC DESTRUCTION OF DOCUMENTS

Country Status (2)

Country Link
EP (1) EP0035980A1 (en)
SE (1) SE420749B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2827002B1 (en) * 2001-07-06 2004-11-12 Brinks France PROCESS FOR THE CHEMICAL DESTRUCTION OF VALUABLES OR PAPER DOCUMENTS
FR2846361B1 (en) * 2002-10-29 2005-06-24 Brinks France SECURITY DEVICE FOR TRANSPORTING AND / OR STORING PAPER VALUES
ITMI20031861A1 (en) * 2003-09-29 2005-03-30 M I B S P A DEVICE AND PROCEDURE FOR INVALIDATING BANKNOTES IN A MONEY-RIDING MACHINE.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL274354A (en) * 1958-08-01 1900-01-01

Also Published As

Publication number Publication date
EP0035980A1 (en) 1981-09-16
SE8001861L (en) 1981-09-11

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