GB353045A - Improvements in and relating to pyroxylin compound sheets - Google Patents

Improvements in and relating to pyroxylin compound sheets

Info

Publication number
GB353045A
GB353045A GB11328/30A GB1132830A GB353045A GB 353045 A GB353045 A GB 353045A GB 11328/30 A GB11328/30 A GB 11328/30A GB 1132830 A GB1132830 A GB 1132830A GB 353045 A GB353045 A GB 353045A
Authority
GB
United Kingdom
Prior art keywords
sheet
lbs
passes
sheets formed
dryer
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
GB11328/30A
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.)
FIBERLOID CORP
Original Assignee
FIBERLOID CORP
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 FIBERLOID CORP filed Critical FIBERLOID CORP
Publication of GB353045A publication Critical patent/GB353045A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B29C55/14—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
    • B29C55/143—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively firstly parallel to the direction of feed and then transversely thereto
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0063—Cutting longitudinally
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
    • 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
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/73—Processes of stretching

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

Apparatus for making films.-A self-sustaining sheet of celluloid has imparted to it a smooth sheeny surface by stretching both longitudinally and transversely while still plastic; plate polishing and calendering are thereby dispensed with. The invention is applied in particular to sheets formed by extruding a stiff, doughy mass as described in Specification 354,339; but may be applied to sheets formed by wet processes. As shown, a suitable mix comprising 210 lbs. cellulose nitrate, 70 lbs. camphor, 175 lbs. alcohol, and 70 oz. urea is prepared in the mixer 11 and discharged into a <PICT:0353045/IV/1> hydraulic filter press 14 from which it passes through a feeder 15 to a screw extrusion press 17. The material is forced through a circular die 18 and is split into a sheet by a knife 20, the sheet being opened out by rolls 21 and passed around rolls 22 and a tension roll 24 to a driven roll 23 which imparts a longitudinal stretch. After traversing a dryer 32 this sheet is passed through a tenter 40 composed of movable nippers carried by a pair of endless chains which diverge slightly and impart a powerful, progressive, transverse stretch. The sheet passes a final dryer 38 and is cut into lengths. Hot air is blown on to the sheet through nozzles 25, 26, 27, to remove solvent and also to keep the surface from hardening. A straight orifice may be employed instead of the circular orifice 18.
GB11328/30A 1930-02-12 1930-04-09 Improvements in and relating to pyroxylin compound sheets Expired GB353045A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US427780A US1979762A (en) 1930-02-12 1930-02-12 Method of finishing sheet pyroxylin

Publications (1)

Publication Number Publication Date
GB353045A true GB353045A (en) 1931-07-09

Family

ID=23696249

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11328/30A Expired GB353045A (en) 1930-02-12 1930-04-09 Improvements in and relating to pyroxylin compound sheets

Country Status (3)

Country Link
US (1) US1979762A (en)
FR (1) FR693186A (en)
GB (1) GB353045A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL68942C (en) * 1940-07-25
DE974729C (en) * 1943-08-17 1961-05-31 Plax Ges Mit Beschraenkter Haf Method and device for the continuous production of biaxially oriented films from solvent-free organic polymerization products, in particular polystyrene
US2622273A (en) * 1948-07-03 1952-12-23 American Viscose Corp Method and means for precipitating cellulose acetate
US2698967A (en) * 1951-01-19 1955-01-11 American Viscose Corp Production of regenerated cellulose films and sheets
BE522077A (en) * 1952-08-12
US2943356A (en) * 1955-09-30 1960-07-05 Rasmussen Ole-Bendt Method of manufacturing a thin band of a high molecular substance which is axially orientated in another direction than the length direction
DE1194561B (en) * 1956-05-18 1965-06-10 Ici Ltd Process for the production of a biaxially oriented polyethylene terephthalate film with high strength in the longitudinal direction
FR1188651A (en) * 1956-12-20 1959-09-24 Du Pont Linear polyterephthalate film and its manufacturing process
GB893523A (en) * 1958-08-12 1962-04-11 Kurashiki Rayon Kk A method of and apparatus for treating polyvinyl alcohol film
US3909176A (en) * 1971-12-17 1975-09-30 Pirelli Device for the manufacture of bands reinforced with longitudinal wires
JPS61661A (en) * 1984-06-11 1986-01-06 塚本　和子 Caustic alkali treatment of knitted fabric
US9539752B2 (en) 2013-08-09 2017-01-10 General Dynamics Ordnance and Tactical Systems—Canada Valleyfield, Inc. Continuous celluloid twin screw extrusion process

Also Published As

Publication number Publication date
US1979762A (en) 1934-11-06
FR693186A (en) 1930-11-17

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