US2195239A - Process for the manufacture of artificial leather and parchment and products obtained thereby - Google Patents

Process for the manufacture of artificial leather and parchment and products obtained thereby Download PDF

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Publication number
US2195239A
US2195239A US72307A US7230736A US2195239A US 2195239 A US2195239 A US 2195239A US 72307 A US72307 A US 72307A US 7230736 A US7230736 A US 7230736A US 2195239 A US2195239 A US 2195239A
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US
United States
Prior art keywords
paper
parchment
face
sheet
sheets
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
US72307A
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English (en)
Inventor
Champsaur Lucien Marie Charles
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US2195239A publication Critical patent/US2195239A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/06—Vegetable or imitation parchment; Glassine paper
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
    • D06N3/0072—Slicing; Manufacturing two webs at one time
    • 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
    • D21H5/08—Vegetable parchment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/904—Artificial leather
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1059—Splitting sheet lamina in plane intermediate of faces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31971—Of carbohydrate
    • Y10T428/31975—Of cellulosic next to another carbohydrate
    • Y10T428/31978—Cellulosic next to another cellulosic
    • Y10T428/31982—Wood or paper
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31971—Of carbohydrate
    • Y10T428/31993—Of paper

Definitions

  • the object of the present invention is to provide improvements in processes for the manuthe feature that the treating bath is made to act upon a thickness of paper such that the transformation of the paper into parchment is effected over a fraction only of the thickness of this paper, this treatment being followed by cleaving, so that two sheets of paper are obtained, of which one face only is parchmented,. while the other face is soft anclv .velvety like the reverse side of animal leather or parchment and preserves the greater part of its absorbent properties, so that this paper can, for example, easily be cemented with any gum by means of its unparchmented face.
  • a 'modification of the invention is characterised by the feature that a plurality of sheets of different thicknesses are caused to pass through the parchmenting bath, so as to parchment the thin sheets throughout and to parchment the thick sheet on its outer faces only. These sheet elements are welded together by pressure and finally the whole assembly is cleaved through the thickest sheet, thereby enabling a sheet to be obtained which has one unparchmented face and one face parchmented over a considerable thickness, this sheet thus havingan increased strength.
  • the process forming the sub-ject of the invention is carried out by the means employed for the manufacture of vegetable parchment and with the same 'raw materials: paper without gum or dressing ( Figure 1) passing through a parchinenting bath (sulphuric acid, phocyanate, etc.).
  • a parchinenting bath sulphuric acid, phocyanate, etc.
  • the bath penetrates more or less deeply into thi paper and transforms the iibresIV of the impregnated part, but the penetration and the-impregnation resulting therefrom can be limited and regulated bycausingthe apparent or relative porosity ofthe paper to be varied and consequently its first absorption and its final parchmenting, .both by the viscosity of the papers to a single superflcialaction, while the zinc chloride, sul- Y fibres of the internal mass of the sheet which i .have been truly and effectively preserved from j any contact'with the bath to the degree of parchmenting, are not parchmented and remain in the natural state.
  • the paper After this treatment by the parchmenting bath, the paper is washed and it is dried or if necessary it is. rendered flexible before drying.
  • the parchmentedface which imitates leather may be worked and varnished in order to form a decorative product for example.
  • the unparchmented face I3 may be coated with gum'in order to-apply the product upon any object.
  • the product obtained is not a parchment from both aspects, of homogeneous chemical composition, but is a heterogeneous product composed essentially of a paper whichhas preserved some of its libres in the natural state with their intrinsic qualities, the feltng of these libres, that is to say the ravelling of the fibres having been disorganised by the cleaving and one face only of the said paper having been rendered impervious by a surface parchmenting operation.
  • This product has the appearance of animal parchment but it has'A the advantage o ver this product, like vegetable .parchment that it is not attackedby fatty
  • This parchment has all the properties ⁇ Yof so-called greaseproof parchment, and it may be employed for covering surfaces to be protected.
  • the action of the bath ⁇ may be continued a little further so that the bres are parchmented only upon the outer -faces of the initial sheet, while thebres in the interior of this sheet up to a more or less great depth, as
  • parchmenting involves the formation of amyloid coating and welding together the fibres which are thus hardened and made rigid; 'on the contrary, hydrating which does not comprise the formation of amyloid only gives a superficial dressing to the fibres rendering them stronger but without hardening them or welding them to each other so that these fibres thus preserve all their flexibility.
  • the three sheets I, 3, 4 are united by pressure, by making them pass for example between two rollers 1, 8.
  • the assembly is then cleaved along the plane YY which coincides approximately with the cen'- tral plane of the thick sheetI I: the mode of operation is the 4same as before.
  • a sheet ( Figure 8) formed by two thin sheets 3, 4 parchmented throughout and welded to the face I 2 of the thick sheet I.
  • the first of these sheets thus has a considerable parchmented thickness and consequently a great strength, while it can easily be cemented by means of its unparchmented face I 3.
  • This product can thus advantageously replace leather.
  • the invention includes not only the foregoing processes, but it also relates by way of new industrial products, to products conformingwith those obtained by the above processesand in particular:
  • a process for the manufacture of artificial leather and parchment consisting in making the parchment bath act upon aA sheet of paper, in parchmenting this paper over a fraction only of its thickness and in cleaving this paper, thereby obtaining two sheets of paper of which one face only is parchmented, the other face preserving the greater part of its absorbent properties.
  • a process for the manufacture .of artificial leather and parchments consisting in making the parchmenting bath act upon a sheet of paper, parchmenting the fibres of this paper over a fraction only of its thickness, superiicially hydrating the fibres of this paper over the remainder of its thickness, and cleaving this paper, thereby obtaining two sheets of paper of which one face only is parchmented, the other facepreserving/the greater part of its absorbent properties.
  • a vegetable parchment having a parchmented face and a soft and velvety face, formed by a layer of iibres of the original paper in an open vand disorganized state.
  • a ⁇ vegetable parchment having a parchmented face and a soft and velvety face formed by a layer of -supercially hydrated fibres in an open and disorganized state.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Paper (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
US72307A 1935-04-12 1936-04-02 Process for the manufacture of artificial leather and parchment and products obtained thereby Expired - Lifetime US2195239A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR712573X 1935-04-12

Publications (1)

Publication Number Publication Date
US2195239A true US2195239A (en) 1940-03-26

Family

ID=9080329

Family Applications (1)

Application Number Title Priority Date Filing Date
US72307A Expired - Lifetime US2195239A (en) 1935-04-12 1936-04-02 Process for the manufacture of artificial leather and parchment and products obtained thereby

Country Status (4)

Country Link
US (1) US2195239A (de)
DE (1) DE712573C (de)
FR (1) FR800648A (de)
GB (2) GB453640A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2690838A (en) * 1950-02-28 1954-10-05 John J Tepper Combination toilet tissue package
US2737597A (en) * 1953-05-01 1956-03-06 Louis J Strobino Protective shield and method of making same
US3245822A (en) * 1961-06-12 1966-04-12 Wood Marc Sa Method for manufacturing thin sheet filter media
EP4389970A1 (de) * 2022-12-23 2024-06-26 Ahlstrom Oyj Recycelbares cellulosebasiertes substrat mit cellulosefasern und nichtfaserigem cellulosematerial

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1159755B (de) * 1961-03-30 1963-12-19 Schleipen & Erkens Ag & Co Verfahren zum einseitigen Pergamentieren eines Papiers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2690838A (en) * 1950-02-28 1954-10-05 John J Tepper Combination toilet tissue package
US2737597A (en) * 1953-05-01 1956-03-06 Louis J Strobino Protective shield and method of making same
US3245822A (en) * 1961-06-12 1966-04-12 Wood Marc Sa Method for manufacturing thin sheet filter media
EP4389970A1 (de) * 2022-12-23 2024-06-26 Ahlstrom Oyj Recycelbares cellulosebasiertes substrat mit cellulosefasern und nichtfaserigem cellulosematerial
WO2024133772A1 (en) * 2022-12-23 2024-06-27 Ahlstrom Oyj Recyclable cellulose-based substrate comprising cellulosic fibres and non-fibrous cellulosic material

Also Published As

Publication number Publication date
GB450067A (en) 1936-07-09
GB453640A (en) 1936-09-15
DE712573C (de) 1941-10-22
FR800648A (fr) 1936-07-15

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