GB1059346A - Extrusion process for the manufacture of polypropylene tubes suitable for the manufacture of blown film - Google Patents

Extrusion process for the manufacture of polypropylene tubes suitable for the manufacture of blown film

Info

Publication number
GB1059346A
GB1059346A GB45575/62A GB4557562A GB1059346A GB 1059346 A GB1059346 A GB 1059346A GB 45575/62 A GB45575/62 A GB 45575/62A GB 4557562 A GB4557562 A GB 4557562A GB 1059346 A GB1059346 A GB 1059346A
Authority
GB
United Kingdom
Prior art keywords
manufacture
sleeve
tubing
polypropylene tubes
extrusion process
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
GB45575/62A
Inventor
James Jack
Godfrey Austin King
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.)
BX Plastics Ltd
Original Assignee
BX Plastics Ltd
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 BX Plastics Ltd filed Critical BX Plastics Ltd
Priority to US543460A priority Critical patent/US3385918A/en
Publication of GB1059346A publication Critical patent/GB1059346A/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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
    • 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
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

1,059,346. Extruding polypropylene tubes and films. B.X. PLASTICS Ltd. Nov. 18, 1963 [Dec. 1, 1962 (2)], Nos. 45575/62 and 45576/62. Headings B5A and B5B. Tubing of isotactic polypropylene 2 is extruded downwardly over a former 13 comprised of at least two separate polytetrafluor. ethylene discs situated within a tubular sleeve 6 below the surface of quenching water 6 which is drawn down through the sleeve 6 by suction pump 8, to quench the tubing 2 within the sleeve 6, at such a rate as to produce the desired crystallite structure in the material, yet avoid the cooling water boiling at the entrance of the sleeve 6. Air is passed by pipes 14, 16 through the tubing during extrusion to prevent it collapsing. After flattening by rollers 17 the tube may be blown into a film.
GB45575/62A 1962-12-01 1962-12-01 Extrusion process for the manufacture of polypropylene tubes suitable for the manufacture of blown film Expired GB1059346A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US543460A US3385918A (en) 1962-12-01 1966-03-23 Extrusion process and apparatus for isotactic polypropylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12841/65A GB1102078A (en) 1965-03-26 1965-03-26 Extrusion process

Publications (1)

Publication Number Publication Date
GB1059346A true GB1059346A (en) 1967-02-15

Family

ID=10012115

Family Applications (2)

Application Number Title Priority Date Filing Date
GB45575/62A Expired GB1059346A (en) 1962-12-01 1962-12-01 Extrusion process for the manufacture of polypropylene tubes suitable for the manufacture of blown film
GB12841/65A Expired GB1102078A (en) 1962-12-01 1965-03-26 Extrusion process

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB12841/65A Expired GB1102078A (en) 1962-12-01 1965-03-26 Extrusion process

Country Status (5)

Country Link
JP (1) JPS5145630B1 (en)
DE (3) DE1242851B (en)
FR (1) FR1474329A (en)
GB (2) GB1059346A (en)
SE (1) SE306420B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4886634A (en) * 1987-09-03 1989-12-12 Hoechst Aktiengesellschaft Process and apparatus for the production of an extruded, stretched, seamless tube

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1364236A (en) * 1970-07-21 1974-08-21 Bakelite Xylonite Ltd Extrusion processes
GB1490337A (en) * 1973-10-15 1977-11-02 Bakelite Xylonite Ltd Extrusion processes
GB1490338A (en) * 1973-10-15 1977-11-02 Bakelite Xylonite Ltd Extrusion processes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB702176A (en) * 1951-08-09 1954-01-13 British Celanese The production of tubular articles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4886634A (en) * 1987-09-03 1989-12-12 Hoechst Aktiengesellschaft Process and apparatus for the production of an extruded, stretched, seamless tube

Also Published As

Publication number Publication date
FR1474329A (en) 1967-03-24
DE1629277B2 (en) 1977-01-13
JPS5145630B1 (en) 1976-12-04
SE306420B (en) 1968-11-25
DE1629277A1 (en) 1971-01-14
DE1242851B (en) 1967-06-22
GB1102078A (en) 1968-02-07
DE1242851C2 (en) 1973-08-09

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