GB407351A - Improvements in the manufacture of films, foils and the like containing cellulose derivatives - Google Patents

Improvements in the manufacture of films, foils and the like containing cellulose derivatives

Info

Publication number
GB407351A
GB407351A GB25142/32A GB2514232A GB407351A GB 407351 A GB407351 A GB 407351A GB 25142/32 A GB25142/32 A GB 25142/32A GB 2514232 A GB2514232 A GB 2514232A GB 407351 A GB407351 A GB 407351A
Authority
GB
United Kingdom
Prior art keywords
casing
film
drum
solvent
solution
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
GB25142/32A
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.)
Henry Dreyfuss Associates LLC
Original Assignee
Henry Dreyfuss Associates LLC
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 Henry Dreyfuss Associates LLC filed Critical Henry Dreyfuss Associates LLC
Priority to GB25142/32A priority Critical patent/GB407351A/en
Priority to US686739A priority patent/US2045348A/en
Publication of GB407351A publication Critical patent/GB407351A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08L1/08—Cellulose derivatives
    • C08L1/10—Esters of organic acids, i.e. acylates
    • C08L1/12—Cellulose acetate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
    • B29C41/26—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length by depositing flowable material on a rotating drum
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2201/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as reinforcement
    • B29K2201/08—Cellulose derivatives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/08—Cellulose derivatives
    • C08J2301/10—Esters of organic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/08—Cellulose derivatives
    • C08J2301/10—Esters of organic acids
    • C08J2301/12—Cellulose acetate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/08—Cellulose derivatives
    • C08J2301/14—Mixed esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/08—Cellulose derivatives
    • C08J2301/16—Esters of inorganic acids
    • C08J2301/18—Cellulose nitrate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/08—Cellulose derivatives
    • C08J2301/20—Esters of both organic acids and inorganic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/08—Cellulose derivatives
    • C08J2301/26—Cellulose ethers
    • C08J2301/28—Alkyl ethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/08—Cellulose derivatives
    • C08J2301/26—Cellulose ethers
    • C08J2301/30—Aryl ethers; Aralkyl ethers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

<PICT:0407351/IV/1> Films, foils, or sheets are obtained by forming a solution of a cellulose ester or ether into the required shape, passing the shaped material through an encompassing gaseous medium and then into a coagulating bath. The gaseous medium is isolated from the surrounding atmosphere or alternatively vapours having a solvent or softening action on the cellulose derivative are introduced into the gaseous medium in addition to those arising from the evaporation of the film-forming solution. After issuing from the shaping device and passing through the gaseous medium, the film may be received on a drum or band wholly or partially immersed in the coagulating bath. The film may pass through the coagulating bath for some distance before being received on the drum and it may be surrounded with a protecting shield. The shaping device may be placed within a casing the atmosphere in which is saturated with solvent vapour by the presence of a vessel containing solvent or a fabric or porous material such as pumice saturated with solvent. Alternatively, a current of evaporative medium may be passed through the casing. The films may be stretched longitudinally and laterally continuously with their production. The film-forming solution may contain high or low boiling point solvents and diluents. The coagulating baths may be aqueous, or organic, and may contain softening agents for the cellulose derivative. The softening agents or solvents may be washed out before drying, or a residue of solvent may be left in the material to be removed by evaporation. Drying may be carried out on the drum or other support on which the films are produced or in a separate drying apparatus. In an example a solution of cellulose acetate is extruded through a shaping device contained in a casing and after passing through the gaseous medium enclosed therein, the film enters a strong solution of calcium chloride. After passing for a few inches through the bath, the film passes round a rotating drum. It is then washed first with dilute calcium chloride solution and then with water, dried on a steam heated drum and wound. As shown in Fig. 2, film-forming solution is extruded from a shaping device 10 enclosed in a casing 12 which is placed over one end of a tank 5 containing coagulating liquid. The space within the casing 12 is saturated with solvent vapour by means of a strip of absorbent fabric 16 suspended from the top of the casing and dipping into solvent contained in a shallow vessel 15. The extruded film passes through the casing into the coagulating bath and round a drum 6 from which it passes out of the bath to washing and drying devices. The casing extends into the vessel 5 so that one edge almost touches the drum 6. Coagulating liquid enters and leaves through slotted pipes extending across the width of the vessel 5 In another construction, the casing 12 is provided with inlet and outlet pipes for a current of evaporative medium. Specifications 177,868, 179,234, [both in Class 2 (ii)], 340,324, 340,325, 340,326, 340,436, 340,437, 343,062, 375,423, 378,858, 380,819, 400,589, 405,676, 405,692, 406,337, and 406,985 are referred to.
GB25142/32A 1932-09-09 1932-09-09 Improvements in the manufacture of films, foils and the like containing cellulose derivatives Expired GB407351A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB25142/32A GB407351A (en) 1932-09-09 1932-09-09 Improvements in the manufacture of films, foils and the like containing cellulose derivatives
US686739A US2045348A (en) 1932-09-09 1933-08-25 Manufacture of films, foils, and the like containing cellulose derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25142/32A GB407351A (en) 1932-09-09 1932-09-09 Improvements in the manufacture of films, foils and the like containing cellulose derivatives

Publications (1)

Publication Number Publication Date
GB407351A true GB407351A (en) 1934-03-09

Family

ID=10222894

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25142/32A Expired GB407351A (en) 1932-09-09 1932-09-09 Improvements in the manufacture of films, foils and the like containing cellulose derivatives

Country Status (2)

Country Link
US (1) US2045348A (en)
GB (1) GB407351A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556217A (en) * 1947-11-21 1951-06-12 Rivoche Eugene Apparatus for forming solid fuels into films or bands
US2624913A (en) * 1948-07-16 1953-01-13 Polymer Corp Mechanism for forming strip stock from polyamides
US2880465A (en) * 1955-01-15 1959-04-07 Bemberg Ag Process for the production of cellulosic sheets
NL243961A (en) * 1958-12-29
DE19709138C2 (en) * 1997-03-06 2000-03-02 Dornier Gmbh Lindauer Device for cooling a melt film extruded from a slot die onto a chill roll

Also Published As

Publication number Publication date
US2045348A (en) 1936-06-23

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