WO2007146947A3 - Apparatus and method for cooling plastic film tube in blown film process - Google Patents

Apparatus and method for cooling plastic film tube in blown film process Download PDF

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Publication number
WO2007146947A3
WO2007146947A3 PCT/US2007/071017 US2007071017W WO2007146947A3 WO 2007146947 A3 WO2007146947 A3 WO 2007146947A3 US 2007071017 W US2007071017 W US 2007071017W WO 2007146947 A3 WO2007146947 A3 WO 2007146947A3
Authority
WO
WIPO (PCT)
Prior art keywords
plastic film
tube
air
film tube
cooling
Prior art date
Application number
PCT/US2007/071017
Other languages
French (fr)
Other versions
WO2007146947A2 (en
Inventor
Gregory James Wood
Original Assignee
Olympic General Corp
Gregory James Wood
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 Olympic General Corp, Gregory James Wood filed Critical Olympic General Corp
Priority to DE112007000516T priority Critical patent/DE112007000516T5/en
Publication of WO2007146947A2 publication Critical patent/WO2007146947A2/en
Publication of WO2007146947A3 publication Critical patent/WO2007146947A3/en

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
    • B29C48/88—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
    • B29C48/902—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 internally
    • 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
    • B29C48/9125—Cooling of hollow articles of tubular films internally
    • 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

Abstract

An apparatus and method for cooling a molten plastic film tube exiting the outlet of an extrusion die is disclosed. The apparatus includes an inlet passage adapted to direct cooling air through the extrusion die to the interior of the plastic film tube. The apparatus includes at least one air dispensing device coupled to the inlet passage. The air dispensing device is configured to receive the cooling air and to direct a flow of the cooling air out of the air dispensing device in an approximately circumferential or tangential direction. The circumferential or tangential flow of the inlet air inside the plastic film tube cools the molten tube while reducing impact on the molten tube.
PCT/US2007/071017 2006-06-12 2007-06-12 Apparatus and method for cooling plastic film tube in blown film process WO2007146947A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112007000516T DE112007000516T5 (en) 2006-06-12 2007-06-12 Apparatus and method for cooling plastic film tube in the blown film process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/451,984 2006-06-12
US11/451,984 US7753666B2 (en) 2006-06-12 2006-06-12 Apparatus and method for cooling plastic film tube in blown film process

Publications (2)

Publication Number Publication Date
WO2007146947A2 WO2007146947A2 (en) 2007-12-21
WO2007146947A3 true WO2007146947A3 (en) 2008-12-11

Family

ID=38821089

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/071017 WO2007146947A2 (en) 2006-06-12 2007-06-12 Apparatus and method for cooling plastic film tube in blown film process

Country Status (4)

Country Link
US (1) US7753666B2 (en)
CA (1) CA2591284C (en)
DE (1) DE112007000516T5 (en)
WO (1) WO2007146947A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201318252D0 (en) * 2013-10-15 2013-11-27 Ap Plastics Ltd Blown film extrusion system and process
US10350806B2 (en) 2016-03-21 2019-07-16 Poly-America, L.P. Apparatus and method for forming a polymeric web

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4115048A (en) * 1976-12-27 1978-09-19 Union Carbide Corporation Apparatus for internally cooling a plastic tubular film bubble
US4138453A (en) * 1977-05-17 1979-02-06 Exxon Research & Engineering Co. Process for manufacturing blown film sheeting
US20050067743A1 (en) * 2003-09-29 2005-03-31 Eric Hatfield Internal bubble cooling unit and method for extruded thin wall thermoplastic sheet

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3170011A (en) * 1962-02-14 1965-02-16 Dow Chemical Co Method and apparatus for making film
US4315963A (en) * 1979-09-14 1982-02-16 The Dow Chemical Co. Thermoplastic film with integral ribbed pattern and bag therefrom
CA1274366C (en) * 1987-03-31 1990-09-25 Bubble forming and stabilizing device for use in a continuous extrusion process for making a blown film
US6068462A (en) * 1997-12-02 2000-05-30 Brampton Engineering, Inc. Apparatus for continuously forming a blown film

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4115048A (en) * 1976-12-27 1978-09-19 Union Carbide Corporation Apparatus for internally cooling a plastic tubular film bubble
US4138453A (en) * 1977-05-17 1979-02-06 Exxon Research & Engineering Co. Process for manufacturing blown film sheeting
US20050067743A1 (en) * 2003-09-29 2005-03-31 Eric Hatfield Internal bubble cooling unit and method for extruded thin wall thermoplastic sheet

Also Published As

Publication number Publication date
DE112007000516T5 (en) 2008-12-11
US7753666B2 (en) 2010-07-13
CA2591284C (en) 2015-06-09
US20070284790A1 (en) 2007-12-13
CA2591284A1 (en) 2007-12-12
WO2007146947A2 (en) 2007-12-21

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