US2348868A - Process of manufacturing flexible cellulosic products - Google Patents

Process of manufacturing flexible cellulosic products Download PDF

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Publication number
US2348868A
US2348868A US261154A US26115439A US2348868A US 2348868 A US2348868 A US 2348868A US 261154 A US261154 A US 261154A US 26115439 A US26115439 A US 26115439A US 2348868 A US2348868 A US 2348868A
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US
United States
Prior art keywords
mannan
manufacturing flexible
cellulosic products
flexible cellulosic
cellulose pulp
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Expired - Lifetime
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US261154A
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Vulliet-Durand Gaston Hubert
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Individual
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Individual
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Publication of US2348868A publication Critical patent/US2348868A/en
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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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/02—Cellulose; Modified cellulose
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
    • C08L5/14—Hemicellulose; Derivatives thereof

Definitions

  • the present invention relates to a new plastic sheet material and the process for making the same.
  • the invention is particularly applicable to paper and pasteboard products.
  • One of the objects of the present invention is to provide a new'cellulose pulp product of high flexibility, great strength, and good wearing quality.
  • a further object of the invention is to provide a new use for mannan meal, a by-prodnet of the manufacture of buttons from ivory nuts.
  • mannan is used as a gelatinizing substance and the product of the present invention it characterized in that it contains a large proportion of mannan mixed with paper pulp.
  • mannan meal is treated with a reagent to alter its properties and to give a product, insolubilized mannan, which when mixed with cellulose pulp may be readily formed into sheets.
  • the sheet is then dried ndvplaced in a gelatinizing bath, after which, 11 is dried.
  • the result- 'efinished product ing product is flexible and very strong with respect to wear and tear and therefore is capable of extensive use,
  • the insolubilized" mannan may be prepared by treatment of mannan meal with a base, alkaline carbonate, lead salt, .basic copper or similar reagent prior to its introduction into the cellulose pulp.
  • the invention may be more particularly understood from the following examples:
  • Example 1 by ventilation.
  • the mannan meal thus obtained is transferred to a heater and mixed with water and cellulose pulp in the proportions of 100 pounds cellulose pulp, 100 pounds insoluble mannan and 56 pounds soluble mannan.
  • the result- Example 2 Two hundred pounds of mannan meal are heated in a water bath with 45 pounds of potassium or sodium carbonate and suflicient water to dissolve the carbonate, after which a precipitation agent for the pseudosolution of mannan is added. Any precipitation or jellification agent of the pseudosolution of mannan can be employed as for example, alcohol or acetone.
  • the whole mixture is then transferred to a centrifugal drying machine and, after washing the treated mannan is transferred to a beater and mixed with cellulose pulp as in Example 1.
  • the product thus obtained is converted on a paper machine to sheets or other shapes and dried in known manner by a press or a centrifugal machine, after which it is kept in a bath for gelatinizing the mannan. Satisfactory results may be obtained by using acidulated water, aqueous glycerine, or formaldehyde in the gelatinizing bath.
  • the finished plastic sheet is obtained after a final drying.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
  • Laminated Bodies (AREA)

Description

, struct the'wire gauze.
Patented May 16, 1944 PROCESS OF MANUFACTURING FLEXIBLE CELLULOSIC PRODUCTS Gaston Hubert Vulliet-Durand, Paris, France;
vested inthe Alien N Drawing.
Property Custodian Application March 10, 1939, Serial No. 261,154. In France March 10, 1938' 1 Claim.
The present invention relates to a new plastic sheet material and the process for making the same. The invention is particularly applicable to paper and pasteboard products.
One of the objects of the present invention is to provide a new'cellulose pulp product of high flexibility, great strength, and good wearing quality. A further object of the invention is to provide a new use for mannan meal, a by-prodnet of the manufacture of buttons from ivory nuts.
Ordinarily; in the paper and pasteboard industries, it is not possibleto use substances which form gelatinous aggregates in the presence of water because such jellylike aggregates prevent proper drainage in the paper machine and ob- In the process of the present invention, mannan is used as a gelatinizing substance and the product of the present invention it characterized in that it contains a large proportion of mannan mixed with paper pulp.
According to the present invention, mannan meal is treated with a reagent to alter its properties and to give a product, insolubilized mannan, which when mixed with cellulose pulp may be readily formed into sheets. The sheet is then dried ndvplaced in a gelatinizing bath, after which, 11 is dried. The result- 'efinished product ing product is flexible and very strong with respect to wear and tear and therefore is capable of extensive use,
The insolubilized" mannan may be prepared by treatment of mannan meal with a base, alkaline carbonate, lead salt, .basic copper or similar reagent prior to its introduction into the cellulose pulp. The invention may be more particularly understood from the following examples:
Example 1 by ventilation. The mannan meal thus obtained is transferred to a heater and mixed with water and cellulose pulp in the proportions of 100 pounds cellulose pulp, 100 pounds insoluble mannan and 56 pounds soluble mannan. The result- Example 2 Two hundred pounds of mannan meal are heated in a water bath with 45 pounds of potassium or sodium carbonate and suflicient water to dissolve the carbonate, after which a precipitation agent for the pseudosolution of mannan is added. Any precipitation or jellification agent of the pseudosolution of mannan can be employed as for example, alcohol or acetone. The whole mixture is then transferred to a centrifugal drying machine and, after washing the treated mannan is transferred to a beater and mixed with cellulose pulp as in Example 1. The product thus obtained is converted on a paper machine to sheets or other shapes and dried in known manner by a press or a centrifugal machine, after which it is kept in a bath for gelatinizing the mannan. Satisfactory results may be obtained by using acidulated water, aqueous glycerine, or formaldehyde in the gelatinizing bath. The finished plastic sheet is obtained after a final drying.
The foregoing description has been given by way of example only and the details may be varied without departing from the principle and scope of the invention.
Having thus described my invention, what I claim is:
The process for the production of a flexible cellulose pulp product which comprises solubilizing mannan by heating with a solution of-sodium carbonate, precipitating the mannan with alcohol,
mixing the precipitated mannan with cellulose Pulp. giving the mixture the desired form, drying the formed material, soaking the form in a bath of acidulated water and finally drying.
GASTON nosrza'r Walteranama.
US261154A 1938-03-10 1939-03-10 Process of manufacturing flexible cellulosic products Expired - Lifetime US2348868A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR526154X 1938-03-10

Publications (1)

Publication Number Publication Date
US2348868A true US2348868A (en) 1944-05-16

Family

ID=8920543

Family Applications (1)

Application Number Title Priority Date Filing Date
US261154A Expired - Lifetime US2348868A (en) 1938-03-10 1939-03-10 Process of manufacturing flexible cellulosic products

Country Status (4)

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US (1) US2348868A (en)
BE (1) BE433034A (en)
GB (1) GB526154A (en)
NL (1) NL58113C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE540542A (en) * 1954-08-13

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Publication number Publication date
GB526154A (en) 1940-09-11
BE433034A (en)
NL58113C (en)

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