US2374214A - Conductive papers - Google Patents

Conductive papers Download PDF

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Publication number
US2374214A
US2374214A US286804A US28680439A US2374214A US 2374214 A US2374214 A US 2374214A US 286804 A US286804 A US 286804A US 28680439 A US28680439 A US 28680439A US 2374214 A US2374214 A US 2374214A
Authority
US
United States
Prior art keywords
paper
conductive
web
conducting
mannitol
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
US286804A
Inventor
Bernard L Kline
Curt E Mobius
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.)
Western Union Telegraph Co
Original Assignee
Western Union Telegraph Co
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
Priority to BE460345D priority Critical patent/BE460345A/xx
Application filed by Western Union Telegraph Co filed Critical Western Union Telegraph Co
Priority to US286804A priority patent/US2374214A/en
Priority to GB11634/40A priority patent/GB537770A/en
Priority to DEI3198D priority patent/DE902111C/en
Priority to FR889820D priority patent/FR889820A/en
Application granted granted Critical
Publication of US2374214A publication Critical patent/US2374214A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/20—Duplicating or marking methods; Sheet materials for use therein using electric current
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/14—Carboxylic acids; Derivatives thereof
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • 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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/76—Processes or apparatus for adding material to the pulp or to the paper characterised by choice of auxiliary compounds which are added separately from at least one other compound, e.g. to improve the incorporation of the latter or to obtain an enhanced combined effect
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/02—Details not particular to receiver or transmitter
    • H04L13/06—Tape or page guiding or feeding devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/23—Reproducing arrangements
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • 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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added

Definitions

  • the present invention relates generally to a novel conducting paper, and more particularly to a light colored conducting paper and the method of rendering the fibrous structure of the paper electrically conductive.
  • the principal object of this invention is to produce a novel light colored recording paper suitable for use without preparation or treatment supplementary to the recording rocess.
  • Another object of this invention is to produce a metal bearing recording paper which is electrically conductive.
  • a still further object of this invention is to provide a paper containing aluminum powder and suitable for electrical recording.
  • a still further object of this invention is to provide a method of rendering a light colored paper containing aluminum prowder electrically conductive.
  • Such material may for example be solid aliphatic and aromatic alcohols, both monohydric and polyhydric, Or aldehyde or ketone type materials with or without a dissolved electrolyte.
  • mannitol also known as mannite. This is a hexahydric alcohol and is obtainable in white powder form.
  • a second important material is .diglycol stearate, that is, a stearic acid ester of diethylene glycol, which gives results comparable with those of mannitol'
  • Another material which will serve as aprotecting medium is erythritol, which is a tetrahydric alcohol;
  • erythritol which is a tetrahydric alcohol.
  • Each of the polyhydric alcohols mentioned is a simple polyhydric alcohol.
  • Other materials may be resorcinol, a dihydroxybenzene, which may be considered a phenolic alcohol, monohydric alcohols where there are tenor more atoms of carbon in the molecule, certain sugars such as dextrose, maltose and sucrose and certain hydroxy and dibasic acids such as succinic or malic acid.
  • Higher aldehydes such as paraldol and lactic aldehyde and ketones such as benzophenone are solids and may also be utilized in the same manner.
  • Preferred protective materials are solid polyhydric alcohols and their derivatives; however, related materials and their derivatives, such as aldehydes, ketones, sugars and certain hydroxy acids exhibit the same tendencies. Esters of alcohols such as camauba wax are also suitable.
  • These materials may be melted and mixed with from 30 to of metal powder, such as aluminum, and allowed to cool.
  • metal powder such as aluminum
  • This mixture is found to be electrically conductive and may therefore be incorporated in fibrous sheets I such as paper.
  • Aluminum is cited by way of example only, since it is obvious that other powdered metals may be substituted, such as copper, brass, bronze, iron, zinc, etc.
  • These metallic powders which are obtained in flaky form, such as aluminum, copper, brass, bronze, etc. are preferred due to the greater light reflecting proper-. ties thereof and hence lighter color.
  • any of the mixtures of one of the materials named above and a metal powder may be incorporated into a sheet of paper by first introducin the aluminum or other metal powder into a beater with the paper pulp in the usual manner, and after the web is at least partially dried the mixturemay be impregnated with an aqueous or alcoholic solution of one of the materials named above, preferably diglycol stearate or mannite.
  • the web may be impregnated by running the ierring the vehicle from a roll to the web.
  • glycol stearate and iorm a conducting mixture with the metal powder in the paper.
  • Conductive papers of this nature are usually provided with a color-changing material whereby the passage 01 marking current through the paper produces a color change in accordance with the desired pattern to be reproduced thereon.
  • Materials such as lead thiosulphate, lead thiocyanate or mercuric sulphide may-be put in the beaters with the metallic powder whereby the material becomes an integral part of the fibrous structure of the paper.
  • the coloring material may also be incorporated as a layer external to the web or the paper.
  • a conducting paper comprising a fibrous body containing a mixture of finely divided metal particles and a solid, fusible compound of the class consisting of monohydric alcohols, simple polyhydric alcohols, and sugars, dispersed throughout said fibrous body, said compound pro moting conductive intimacy of said metal particles.
  • a conducting paper comprising a fibrous body containing a mixture of finely divided metal particles and mannitol dispersed throughout said fibrous body, said mannitol promoting conductive intimacy of said metal particles.
  • a conducting paper comprising a fibrous body containing a mixture of finely divided metal particles and erythritol dispersed throughout said fibrous body, said erythritol' promoting conductive intimacy of said metal particles.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Inorganic Chemistry (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Dispersion Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Paper (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Photoreceptors In Electrophotography (AREA)

Description

Patented Apr. 24, 1945 2,374,214 CONDUCTIVE PAPERS Bernard L; Kline, Manhasset, and Curt E. Mobius,
Brooklyn, N. Y.,
Union Telegraph Company,
assignors to The Western New York, N. Y., a
corporation of New York No Drawing. Application July 2'7, 1939, Serial No. 286,804
4 Claims.
The present invention relates generally to a novel conducting paper, and more particularly to a light colored conducting paper and the method of rendering the fibrous structure of the paper electrically conductive.
It has been proposed heretofore to produce conductive sheets by incorporating powdered metals in the fibrous structure of a'paper but apparently a film of oxide or other material forms between the particles which impairs its conductivity.
In the process of electric recording it is advantageous to utilize a light colored paper which is electrically conductive, but the prior art fails to teach a method of producing conductive metallic papers, the known conducting papers being either dark colored and composed of various compositions of carbon or depending upon ionic conduction. It is also advantageous that a paper should not require preparatory treatment such as humidification or dehumidification as such operations are expensive.
Accordingly, the principal object of this invention is to produce a novel light colored recording paper suitable for use without preparation or treatment supplementary to the recording rocess.
Another object of this invention is to produce a metal bearing recording paper which is electrically conductive.
A still further object of this invention is to provide a paper containing aluminum powder and suitable for electrical recording.
Still vide a novel method of rendering light colored metal bearing papers electrically conductive.
A still further object of this invention is to provide a method of rendering a light colored paper containing aluminum prowder electrically conductive.
As stated above, when aluminum or other metallic powder is mixed with fibrous paper pulp it is found that the electrical conductivity of the resulting product is impaired for the reason that a film of oxide or other material forms between the particles of metal and acts as an insulator. However we have found that certain materials, which are'reducing or neutral to the metallic powders, have the property of promoting conductive intimacy of the particles of powdered metal and preventing formation of highly insu-- lating films on the surface thereof and when the metallic powder is mixed with such material or vehicle a metallic appearing mass is obtained in which the metallic particles make suflicient elecanother object ofthis invention is to protric contact to produce a conductive mixture. Such material may for example be solid aliphatic and aromatic alcohols, both monohydric and polyhydric, Or aldehyde or ketone type materials with or without a dissolved electrolyte. One solid which gives excellent results is mannitol, also known as mannite. This is a hexahydric alcohol and is obtainable in white powder form. A second important material is .diglycol stearate, that is, a stearic acid ester of diethylene glycol, which gives results comparable with those of mannitol' Another material which will serve as aprotecting medium is erythritol, which is a tetrahydric alcohol; Each of the polyhydric alcohols mentioned is a simple polyhydric alcohol. Other materials may be resorcinol, a dihydroxybenzene, which may be considered a phenolic alcohol, monohydric alcohols where there are tenor more atoms of carbon in the molecule, certain sugars such as dextrose, maltose and sucrose and certain hydroxy and dibasic acids such as succinic or malic acid. Higher aldehydes such as paraldol and lactic aldehyde and ketones such as benzophenone are solids and may also be utilized in the same manner. Preferred protective materials are solid polyhydric alcohols and their derivatives; however, related materials and their derivatives, such as aldehydes, ketones, sugars and certain hydroxy acids exhibit the same tendencies. Esters of alcohols such as camauba wax are also suitable.
These materials, of which mannitol and diglycol stearate are preferred, may be melted and mixed with from 30 to of metal powder, such as aluminum, and allowed to cool. This mixture is found to be electrically conductive and may therefore be incorporated in fibrous sheets I such as paper. Aluminum is cited by way of example only, since it is obvious that other powdered metals may be substituted, such as copper, brass, bronze, iron, zinc, etc. These metallic powders which are obtained in flaky form, such as aluminum, copper, brass, bronze, etc. are preferred due to the greater light reflecting proper-. ties thereof and hence lighter color.
Any of the mixtures of one of the materials named above and a metal powder may be incorporated into a sheet of paper by first introducin the aluminum or other metal powder into a beater with the paper pulp in the usual manner, and after the web is at least partially dried the mixturemay be impregnated with an aqueous or alcoholic solution of one of the materials named above, preferably diglycol stearate or mannite. The web may be impregnated by running the ierring the vehicle from a roll to the web. The
web may then be dried and subjected to hot calendering which will melt the mannitol or di-'.
glycol stearate and iorm a conducting mixture with the metal powder in the paper.
Conductive papers of this nature are usually provided with a color-changing material whereby the passage 01 marking current through the paper produces a color change in accordance with the desired pattern to be reproduced thereon. Materials such as lead thiosulphate, lead thiocyanate or mercuric sulphide may-be put in the beaters with the metallic powder whereby the material becomes an integral part of the fibrous structure of the paper. The coloring material may also be incorporated as a layer external to the web or the paper. In any case passage of electrical current through the sheet, which has been made conductive in the manner described above, results in reproduction of the desired character. or pattern on the surface of the paper. From the above description it is evident that the objects of this invention have been accomplishedin that the process results in a novel light colored metal bearing 1 paper which is electrically conductive.
Further advantages and modifications oi'this invention will be obvious to those skilled in the art, and therefore I desire that this invention shall be limited only to the extent required by the prior art and appended claims.
. the beaten mixture' into a web, at least drying said web, impregnating said web with 8.
We claim: l. Theprocess of producing an electrically conducting paper comprising the steps or mixing and beating aluminum powder and pulp, forming solution of mannitol, drying said web and hot calenderlng said web to melt the mannitol and tom a conducting mixture with the aluminum powder. v
2. A conducting paper comprising a fibrous body containing a mixture of finely divided metal particles and a solid, fusible compound of the class consisting of monohydric alcohols, simple polyhydric alcohols, and sugars, dispersed throughout said fibrous body, said compound pro moting conductive intimacy of said metal particles.
3. A conducting paper comprising a fibrous body containing a mixture of finely divided metal particles and mannitol dispersed throughout said fibrous body, said mannitol promoting conductive intimacy of said metal particles.
4 --i. A conducting paper comprising a fibrous body containing a mixture of finely divided metal particles and erythritol dispersed throughout said fibrous body, said erythritol' promoting conductive intimacy of said metal particles.
BERNiARD 1. mime. cua'r E. MOBIUS.
P rtially
US286804A 1939-07-27 1939-07-27 Conductive papers Expired - Lifetime US2374214A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE460345D BE460345A (en) 1939-07-27
US286804A US2374214A (en) 1939-07-27 1939-07-27 Conductive papers
GB11634/40A GB537770A (en) 1939-07-27 1940-07-12 Conductive paper
DEI3198D DE902111C (en) 1939-07-27 1940-07-27 Recording medium made of electrically conductive paper for radio broadcasting purposes u. Like. And method for its preparation
FR889820D FR889820A (en) 1939-07-27 1941-03-22 Electrically conductive paper for telegraph and similar apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US286804A US2374214A (en) 1939-07-27 1939-07-27 Conductive papers

Publications (1)

Publication Number Publication Date
US2374214A true US2374214A (en) 1945-04-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
US286804A Expired - Lifetime US2374214A (en) 1939-07-27 1939-07-27 Conductive papers

Country Status (5)

Country Link
US (1) US2374214A (en)
BE (1) BE460345A (en)
DE (1) DE902111C (en)
FR (1) FR889820A (en)
GB (1) GB537770A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2654170A (en) * 1949-01-17 1953-10-06 Minnesota Mining & Mfg Disintegrable label and washable container labeled therewith
US2662803A (en) * 1949-06-29 1953-12-15 Faximile Inc Recording method and apparatus
US2726179A (en) * 1952-01-07 1955-12-06 Bosch Gmbh Robert Recording tapes having a metal layer applied by vapour deposition
US2870689A (en) * 1952-12-04 1959-01-27 Helen E Brennan Method of producing strip material
US3062700A (en) * 1960-02-11 1962-11-06 Harold R Dalton Static discharging paper
US3132989A (en) * 1961-02-27 1964-05-12 Carrier Corp Thermally conductive paper containing dendritic metal particles
US3351740A (en) * 1962-08-09 1967-11-07 Olympia Werke Ag Punching apparatus
US3493369A (en) * 1964-04-03 1970-02-03 Appleton Coated Paper Co Low electrical resistance varnish coatings on an insulating base
US3874995A (en) * 1971-03-30 1975-04-01 Us Army Method of making aluminized paper
FR2341884A1 (en) * 1976-02-19 1977-09-16 Mita Industrial Co Ltd ELECTRICAL RECORDING ELEMENT AND PROCEDURE
FR2432543A1 (en) * 1978-08-04 1980-02-29 Western Electric Co PROCESS FOR JOINING CIRCUIT ELEMENTS TOGETHER WITH AN ADHESIVE CONDUCTOR CONTAINING A CONDUCTIVITY ENHANCING AGENT AND CIRCUIT ELEMENTS FOR IMPLEMENTING THE PROCESS
US4806410A (en) * 1986-09-18 1989-02-21 Ranpak Corp. Processes for the production of antistatic or static dissipative paper, and the paper products thus produced, and apparatus utilized
US20090036850A1 (en) * 2007-07-31 2009-02-05 Davis-Dang Nhan Sensor products using conductive webs
US20120055641A1 (en) * 2007-07-31 2012-03-08 Kimberly-Clark Worldwide, Inc. Conductive Webs
US20130264019A1 (en) * 2010-12-15 2013-10-10 Condalign As Method for forming an anisotropic conductive paper and a paper thus formed
WO2022174236A1 (en) * 2021-02-10 2022-08-18 Illinois Tool Works Inc. Sheet assembly for forming one or more cards

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022213A (en) * 1958-02-13 1962-02-20 Michigan Res Lab Inc Conductive web and method of making same
US2993816A (en) * 1960-03-30 1961-07-25 Du Pont Conducting textryls

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2654170A (en) * 1949-01-17 1953-10-06 Minnesota Mining & Mfg Disintegrable label and washable container labeled therewith
US2662803A (en) * 1949-06-29 1953-12-15 Faximile Inc Recording method and apparatus
US2726179A (en) * 1952-01-07 1955-12-06 Bosch Gmbh Robert Recording tapes having a metal layer applied by vapour deposition
US2870689A (en) * 1952-12-04 1959-01-27 Helen E Brennan Method of producing strip material
US3062700A (en) * 1960-02-11 1962-11-06 Harold R Dalton Static discharging paper
US3132989A (en) * 1961-02-27 1964-05-12 Carrier Corp Thermally conductive paper containing dendritic metal particles
US3351740A (en) * 1962-08-09 1967-11-07 Olympia Werke Ag Punching apparatus
US3493369A (en) * 1964-04-03 1970-02-03 Appleton Coated Paper Co Low electrical resistance varnish coatings on an insulating base
US3874995A (en) * 1971-03-30 1975-04-01 Us Army Method of making aluminized paper
FR2341884A1 (en) * 1976-02-19 1977-09-16 Mita Industrial Co Ltd ELECTRICAL RECORDING ELEMENT AND PROCEDURE
FR2432543A1 (en) * 1978-08-04 1980-02-29 Western Electric Co PROCESS FOR JOINING CIRCUIT ELEMENTS TOGETHER WITH AN ADHESIVE CONDUCTOR CONTAINING A CONDUCTIVITY ENHANCING AGENT AND CIRCUIT ELEMENTS FOR IMPLEMENTING THE PROCESS
US4806410A (en) * 1986-09-18 1989-02-21 Ranpak Corp. Processes for the production of antistatic or static dissipative paper, and the paper products thus produced, and apparatus utilized
US20090036850A1 (en) * 2007-07-31 2009-02-05 Davis-Dang Nhan Sensor products using conductive webs
US20120055641A1 (en) * 2007-07-31 2012-03-08 Kimberly-Clark Worldwide, Inc. Conductive Webs
US8381536B2 (en) * 2007-07-31 2013-02-26 Kimberly-Clark Worldwide, Inc. Conductive webs
US8697934B2 (en) 2007-07-31 2014-04-15 Kimberly-Clark Worldwide, Inc. Sensor products using conductive webs
US20130264019A1 (en) * 2010-12-15 2013-10-10 Condalign As Method for forming an anisotropic conductive paper and a paper thus formed
US9169601B2 (en) * 2010-12-15 2015-10-27 Condalign As Method for forming an anisotropic conductive paper and a paper thus formed
WO2022174236A1 (en) * 2021-02-10 2022-08-18 Illinois Tool Works Inc. Sheet assembly for forming one or more cards

Also Published As

Publication number Publication date
FR889820A (en) 1944-01-20
DE902111C (en) 1954-01-18
BE460345A (en)
GB537770A (en) 1941-07-04

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