GB555171A - Method and apparatus for impregnating fibrous material - Google Patents

Method and apparatus for impregnating fibrous material

Info

Publication number
GB555171A
GB555171A GB849741A GB849741A GB555171A GB 555171 A GB555171 A GB 555171A GB 849741 A GB849741 A GB 849741A GB 849741 A GB849741 A GB 849741A GB 555171 A GB555171 A GB 555171A
Authority
GB
United Kingdom
Prior art keywords
chamber
treating
solvent
solution
heating
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
Application number
GB849741A
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.)
ERNEST EDWARD MASSEY
Original Assignee
ERNEST EDWARD MASSEY
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 US348962A priority Critical patent/US2303257A/en
Application filed by ERNEST EDWARD MASSEY filed Critical ERNEST EDWARD MASSEY
Priority to GB849741A priority patent/GB555171A/en
Publication of GB555171A publication Critical patent/GB555171A/en
Expired legal-status Critical Current

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
    • 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
    • D21H23/22—Addition to the formed paper
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • D21H23/40—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper only one side of the paper being in contact with the material
    • 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
    • D21H23/22—Addition to the formed paper
    • D21H23/66—Treating discontinuous paper, e.g. sheets, blanks, rolls
    • 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
    • D21H5/0005—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating
    • D21H5/0012—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by bringing paper into contact with an excess of fluids, the paper carrying away only a part of the fluid material, e.g. by passing through liquids, gases or vapours
    • D21H5/0015—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by bringing paper into contact with an excess of fluids, the paper carrying away only a part of the fluid material, e.g. by passing through liquids, gases or vapours only one side of the paper being in contact with the treating medium, e.g. paper carried by support
    • 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
    • D21H17/11—Halides
    • 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
    • D21H17/60—Waxes
    • 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
    • D21H23/22—Addition to the formed paper
    • D21H23/30—Pretreatment of 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
    • D21H23/22—Addition to the formed paper
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • D21H23/42—Paper being at least partly surrounded by the material on both sides

Landscapes

  • Treatment Of Fiber Materials (AREA)

Abstract

555,171. Impregnating fibrous material. CAMPBELL, W. B., MAASS, O., and MASSEY, E. E. July 4, 1941, No. 8497. [Class 15 (i)] [Also in Group VIII] Rolls of cigarette paper &c. 50 supported with intermediate heat conducting spacers 53 on a hollow mandrel 51 adapted to be slipped over a heating column 28 in the centre of the treating chamber 5 are impregnated with a solution of wax in a volatile solvent by repeatedly soaking the rolls in the solution at a temperature above the boiling point of the solvent and removal of the solvent by the application of heat and suction in an apparatus comprising in addition to the treating chamber 5 which is surrounded with a jacket 24 and heating coils 25, 26 a storage chamber 6 heatable by a jacket 46 and coil 47 and connected to the chamber 5 by a pipe 8 and valve 9 and open at all times to the air by a valve 7, the treating chamber being connected by a pipe 12 to a condensing coil 13 communicating with a vacuum pump by a pipe 15 having a branch 12a leading direct to the chamber 5 and other branches 18, 19 leading to a solvent tank 20, control valves being provided in the pipes and branches as shown. By suitable manipulation of the valves and heating (and cooling arrangements) the impregnation may be carried out in the following stages : (1) charging the storage chamber 6 with treating solution ; (2) placing the paper rolls and heatconducting spacers 53 on the heating column 28 ; (2a) heating the treating chamber 5 and contents above the boiling point of the solvent (3) placing the treating chamber under suction ; (3a) cooling walls of treating chamber to cause any condensation of solvent at next stage on said walls rather than on the paper rolls; (4) placing evacuated treating chamber 5 in communication with storage chamber 6 causing treating solution to enter chamber 5 ; (5) disrupting this communication when the transfer of treating solution is complete ; (6) heating solution in treating chamber above boiling point of solvent while rolls are soaking therein ; (7) restoring communication between treating and storage chambers whereby unabsorbed solution is forced back to storage chamber by vapour pressure ; (8) disrupting this communication when the transfer of treating solution back to the storage chamber is completed ; (9) removing all remaining solvent in treating chamber and contents by heat and suction ; thereafter stages (4) to (9) are repeated.
GB849741A 1940-07-31 1941-07-04 Method and apparatus for impregnating fibrous material Expired GB555171A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US348962A US2303257A (en) 1940-07-31 1940-07-31 Method and apparatus for impregnating fibrous material
GB849741A GB555171A (en) 1941-07-04 1941-07-04 Method and apparatus for impregnating fibrous material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB849741A GB555171A (en) 1941-07-04 1941-07-04 Method and apparatus for impregnating fibrous material

Publications (1)

Publication Number Publication Date
GB555171A true GB555171A (en) 1943-08-09

Family

ID=9853587

Family Applications (1)

Application Number Title Priority Date Filing Date
GB849741A Expired GB555171A (en) 1940-07-31 1941-07-04 Method and apparatus for impregnating fibrous material

Country Status (1)

Country Link
GB (1) GB555171A (en)

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