GB1229065A - - Google Patents

Info

Publication number
GB1229065A
GB1229065A GB1229065DA GB1229065A GB 1229065 A GB1229065 A GB 1229065A GB 1229065D A GB1229065D A GB 1229065DA GB 1229065 A GB1229065 A GB 1229065A
Authority
GB
United Kingdom
Prior art keywords
cooling
ring
slit
slits
april
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
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 filed Critical
Publication of GB1229065A publication Critical patent/GB1229065A/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
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular films
    • B29C48/913—Cooling of hollow articles of tubular films 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
    • B29C48/03—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
    • 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
    • B29C48/904—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 using dry calibration, i.e. no quenching tank, e.g. with water spray for cooling or lubrication

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

1,229,065. Cooling rings. MITSUBISHI PETROCHEMICAL CO. Ltd. 3 April, 1969 [6 April, 1968; 26 April, 1968; 17 May, 1968], No. 17733/69. Heading B5B. A ring for cooling tubular thermoplastic films after extrusion is shown in Figs. 1 and 3. Fig. 3 shows the mode of action of the ring. A tubulr film f is produced by melt extrusion from the slit b of the circular die a, and is inflated by reducing the external pressure on the film. The cooling medium, e.g. air, is supplied to the ring and ejected through the annular slits 35 and 37. In order to stabilize the film in the region of the cooling slits, the slits 25 and 39 in the hollow annular chambers shown are provided. The cooling medium is supplied via the conduit 2 and enters the cooling ring via the aperture 3. From the chamber 33 the cooling medium reached the slit 35, via the aperture 15, and tortuous chamber 34. Similarly the cooling medium reaches the slit 37 via a tortuous passage 36. The primary cooling slit 35 is inclined to the vertical at an angle between 30 to 60 degrees and the secondary cooling slit is inclined to the vertical at an angle between 0 to 30 degrees. The widths of the slits 35 and 37 together with the apertures of the stabilizing chambers 25 and 39 may be adjusted by means of the threadably mounted members 7, 8 and 9. A number of variations are given in the Specification including a cooling ring (Fig. 7, not shown) in which the slits are rotatable about the axis of the ring.
GB1229065D 1968-04-06 1969-04-03 Expired GB1229065A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2244568 1968-04-06
JP2793668 1968-04-26
JP3309768 1968-05-17

Publications (1)

Publication Number Publication Date
GB1229065A true GB1229065A (en) 1971-04-21

Family

ID=27283846

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1229065D Expired GB1229065A (en) 1968-04-06 1969-04-03

Country Status (3)

Country Link
DE (1) DE1917521A1 (en)
FR (1) FR2005712A1 (en)
GB (1) GB1229065A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134846A (en) * 1983-02-10 1984-08-22 Tomi Machinery Manufacturing C Cooling blown tubular plastics film
US4473527A (en) * 1981-11-09 1984-09-25 Mitsui Petrochemical Industries Ltd. Method and apparatus for forming inflation film
CN103481425A (en) * 2013-09-29 2014-01-01 昆山市华浦塑业有限公司 Film cooling forming device of film blowing machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1318927A (en) * 1969-12-22 1973-05-31 Exxon Research Engineering Co Multi-step air ring for tubular film process
DE2032346C3 (en) * 1970-06-30 1982-12-23 Windmöller & Hölscher, 4540 Lengerich Cooling device for tubular plastic films produced by means of a film blow head
FR2428803A1 (en) * 1978-06-12 1980-01-11 Pont A Mousson COOLING DEVICE, PARTICULARLY FOR THE EXTERNAL COOLING OF TUBULAR DUCTS OF PLASTIC MATERIAL OBTAINED BY EXTRUSION-BLOWING
ES8503277A1 (en) * 1983-06-29 1985-02-16 Charbonnages Ste Chimique Apparatus and method for cooling plastic films.
FR2564775B1 (en) * 1984-05-24 1986-09-12 Charbonnages Ste Chimique DEVICE AND METHOD FOR COOLING PLASTIC SHEETS
DE4205185A1 (en) * 1992-02-20 1993-08-26 Windmoeller & Hoelscher BLOW HEAD FOR THE PRODUCTION OF TUBE FILMS FROM THERMOPLASTIC PLASTIC

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473527A (en) * 1981-11-09 1984-09-25 Mitsui Petrochemical Industries Ltd. Method and apparatus for forming inflation film
GB2134846A (en) * 1983-02-10 1984-08-22 Tomi Machinery Manufacturing C Cooling blown tubular plastics film
CN103481425A (en) * 2013-09-29 2014-01-01 昆山市华浦塑业有限公司 Film cooling forming device of film blowing machine

Also Published As

Publication number Publication date
DE1917521A1 (en) 1969-10-30
FR2005712A1 (en) 1969-12-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee