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GB1248171A - The heat stabilisation of oriented thermoplastic films - Google Patents

The heat stabilisation of oriented thermoplastic films

Info

Publication number
GB1248171A
GB1248171A GB479/69A GB47969A GB1248171A GB 1248171 A GB1248171 A GB 1248171A GB 479/69 A GB479/69 A GB 479/69A GB 47969 A GB47969 A GB 47969A GB 1248171 A GB1248171 A GB 1248171A
Authority
GB
United Kingdom
Prior art keywords
film
tube
nip rolls
pressure
heated
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
GB479/69A
Inventor
Grahame Melvin Reade
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB479/69A priority Critical patent/GB1248171A/en
Priority to ZA698979*A priority patent/ZA698979B/en
Priority to IE1723/69A priority patent/IE33684B1/en
Priority to CA071,265A priority patent/CA959212A/en
Priority to SE00022/70A priority patent/SE355320B/xx
Priority to DE2000158A priority patent/DE2000158C3/en
Priority to NO7010A priority patent/NO136341C/en
Priority to FI700003A priority patent/FI52537C/en
Priority to NL7000020A priority patent/NL7000020A/xx
Priority to LU60130D priority patent/LU60130A1/xx
Priority to FR7000005A priority patent/FR2027740A1/fr
Priority to DK1770AA priority patent/DK136028B/en
Priority to PL1970137972A priority patent/PL80824B1/pl
Priority to ES375151A priority patent/ES375151A1/en
Priority to CH2670A priority patent/CH502177A/en
Priority to BE744056D priority patent/BE744056A/en
Priority to AT7570*#A priority patent/AT327530B/en
Publication of GB1248171A publication Critical patent/GB1248171A/en
Priority to US00285621A priority patent/US3814785A/en
Priority to MY19/73A priority patent/MY7300019A/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
    • B29C48/901—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
    • B29C48/903—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 externally
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/33—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles with parts rotatable relative to each other
    • 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
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular 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
    • B29C48/001—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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/885—External treatment, e.g. by using air rings for cooling tubular 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91—Heating, e.g. for cross linking
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Laminated Bodies (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)

Abstract

1,248,171. Heat treatment of tubular film. IMPERIAL CHEMICAL INDUSTRIES Ltd. 18 Dec., 1969 [3 Jan., 1969], No. 479/69. Heading B5B. A process for the heat stabilization of tubular films of oriented thermoplastic materials comprises feeding such a tubular film filled with gas under pressure through a zone where it is heated to the required heat setting temperature gas being supplied under pressure to the outside of the tube to prevent any undesirable expansion of the tube. As shown, film is extruded from an annular extrusion die 2, to form a tubular film 1, and is cooled by passing over a mandrel 3, and/or through a cooling bath 4. The tube is drawn off by nip rolls 7, whose width is narrower than the collapsed tube, and which are rotating at a greater rate than the extrusion rate, thus forming an air tight seal on the mandrel 3, and preventing the inflation pressure from rupturing the tube at its point of extrusion. The tube is then heated to its orientation temperature by circular infra-red heaters 8, and stretched transversely by the high internal pressure introduced via the pipe 9, and longitudinally by a pair of nip rolls 10, rotating faster than nip rolls 7. The air pressure introduced inside the film can pass through these nip rolls 10 as the said nip rolls do not collapse the film across its entire width. The film passes into the heat treatment zone which consists of a sleeve 11, divided into two compartments. Heated gas under pressure is passed through pipe 13 and the perforations 12 into the upper compartment, surrounding the film and thus balancing the pressure and heating the film to the required temperature. Cold gas under pressure is introduced into the lower compartment through pipe 16 and perforations 18, to cool the film and balance the pressure to prevent expansion due to the high internal pressure. The film passes from the heat treating zone and is finally collapsed across its width by nip rolls 17. In examples polyethylene terephthalate film is heated to a temperature between 150-230‹ C. during heat setting; and film may be so made having an area shrinkage of less than 10% after heating at 140‹ C. for 1 minute.
GB479/69A 1969-01-03 1969-01-03 The heat stabilisation of oriented thermoplastic films Expired GB1248171A (en)

Priority Applications (19)

Application Number Priority Date Filing Date Title
GB479/69A GB1248171A (en) 1969-01-03 1969-01-03 The heat stabilisation of oriented thermoplastic films
ZA698979*A ZA698979B (en) 1969-01-03 1969-12-29 The heat stabilisation of oriented thermoplastic films
IE1723/69A IE33684B1 (en) 1969-01-03 1969-12-30 The heat stabilisation of oriented thermoplastic films
CA071,265A CA959212A (en) 1969-01-03 1969-12-31 Heat stabilisation of oriented thermoplastic films
LU60130D LU60130A1 (en) 1969-01-03 1970-01-02
DE2000158A DE2000158C3 (en) 1969-01-03 1970-01-02 Method and device for stabilizing the shape of film tubes
NO7010A NO136341C (en) 1969-01-03 1970-01-02 PROCEDURE FOR HEAT CURING OF AN ORIENTED, HOSE-SHAPED FILM OF THERMOPLASTIC MATERIAL AND APPARATUS FOR CARRYING OUT PROCEDURE
FI700003A FI52537C (en) 1969-01-03 1970-01-02 Method and device for heat stabilization of oriented tubular films of thermoplastic material.
NL7000020A NL7000020A (en) 1969-01-03 1970-01-02
SE00022/70A SE355320B (en) 1969-01-03 1970-01-02
FR7000005A FR2027740A1 (en) 1969-01-03 1970-01-02
DK1770AA DK136028B (en) 1969-01-03 1970-01-02 Method for heat fixing an oriented foil tube of thermoplastic material and apparatus for carrying out the method.
ES375151A ES375151A1 (en) 1969-01-03 1970-01-03 The heat stabilisation of oriented thermoplastic films
PL1970137972A PL80824B1 (en) 1969-01-03 1970-01-03
CH2670A CH502177A (en) 1969-01-03 1970-01-05 Method and device for the production of tubular films
BE744056D BE744056A (en) 1969-01-03 1970-01-05 THERMOSTABILIZATION OF ORIENTED THERMOPLASTIC FILMS
AT7570*#A AT327530B (en) 1969-01-03 1970-01-05 METHOD AND DEVICE FOR THE HEAT TREATMENT OF AN INFLATED TUBE FILM MADE OF ORIENTED THERMOPLASTIC PLASTIC
US00285621A US3814785A (en) 1969-01-03 1972-09-01 Heat stabilization of oriented thermoplastic films
MY19/73A MY7300019A (en) 1969-01-03 1973-12-30 The heat stabilisation of oriented thermoplastic films

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB479/69A GB1248171A (en) 1969-01-03 1969-01-03 The heat stabilisation of oriented thermoplastic films

Publications (1)

Publication Number Publication Date
GB1248171A true GB1248171A (en) 1971-09-29

Family

ID=9705077

Family Applications (1)

Application Number Title Priority Date Filing Date
GB479/69A Expired GB1248171A (en) 1969-01-03 1969-01-03 The heat stabilisation of oriented thermoplastic films

Country Status (18)

Country Link
AT (1) AT327530B (en)
BE (1) BE744056A (en)
CA (1) CA959212A (en)
CH (1) CH502177A (en)
DE (1) DE2000158C3 (en)
DK (1) DK136028B (en)
ES (1) ES375151A1 (en)
FI (1) FI52537C (en)
FR (1) FR2027740A1 (en)
GB (1) GB1248171A (en)
IE (1) IE33684B1 (en)
LU (1) LU60130A1 (en)
MY (1) MY7300019A (en)
NL (1) NL7000020A (en)
NO (1) NO136341C (en)
PL (1) PL80824B1 (en)
SE (1) SE355320B (en)
ZA (1) ZA698979B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4911626B1 (en) * 1970-12-10 1974-03-18
EP0142948A3 (en) * 1983-10-24 1985-10-09 Teijin Limited Production of thin-walled cylindrical body of aromatic polyester
JPS60206621A (en) * 1984-03-31 1985-10-18 Kureha Chem Ind Co Ltd Vinylidene fluoride type resin film, manufacture thereof metallized film

Also Published As

Publication number Publication date
DE2000158C3 (en) 1974-06-06
FI52537B (en) 1977-06-30
PL80824B1 (en) 1975-08-30
NL7000020A (en) 1970-07-07
CH502177A (en) 1971-01-31
AT327530B (en) 1976-02-10
DE2000158A1 (en) 1970-08-27
SE355320B (en) 1973-04-16
DK136028B (en) 1977-08-01
FI52537C (en) 1977-10-10
ES375151A1 (en) 1972-03-16
IE33684B1 (en) 1974-09-18
BE744056A (en) 1970-07-06
LU60130A1 (en) 1970-03-18
DK136028C (en) 1978-01-09
NO136341B (en) 1977-05-16
FR2027740A1 (en) 1970-10-02
ATA7570A (en) 1975-04-15
IE33684L (en) 1970-07-03
DE2000158B2 (en) 1973-11-08
CA959212A (en) 1974-12-17
MY7300019A (en) 1973-12-31
NO136341C (en) 1977-08-24
ZA698979B (en) 1971-07-28

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