GB201202855D0 - Process for decreasing the mold residence time in extrusion blow molding - Google Patents

Process for decreasing the mold residence time in extrusion blow molding

Info

Publication number
GB201202855D0
GB201202855D0 GBGB1202855.1A GB201202855A GB201202855D0 GB 201202855 D0 GB201202855 D0 GB 201202855D0 GB 201202855 A GB201202855 A GB 201202855A GB 201202855 D0 GB201202855 D0 GB 201202855D0
Authority
GB
United Kingdom
Prior art keywords
liquefied gas
control
air
mold
decreasing
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.)
Withdrawn
Application number
GBGB1202855.1A
Other versions
GB2499454A (en
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.)
TOWZEY III EARL M
Original Assignee
TOWZEY III EARL M
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 TOWZEY III EARL M filed Critical TOWZEY III EARL M
Priority to GB1202855.1A priority Critical patent/GB2499454A/en
Publication of GB201202855D0 publication Critical patent/GB201202855D0/en
Publication of GB2499454A publication Critical patent/GB2499454A/en
Withdrawn legal-status Critical Current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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/66—Cooling by refrigerant introduced into the blown article
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • B29C2049/4602—Blowing fluids
    • B29C2049/4605—Blowing fluids containing an inert gas, e.g. helium
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • B29C2049/4602—Blowing fluids
    • B29C2049/465—Blowing fluids being incompressible
    • 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
    • B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

In a process for decreasing the mold residence time in extrusion blow molding where pressurized air 1 is used to expand a plastic into a blow molded article and pressurized liquefied gas 11 is introduced to the blown article to cool it by an evaporative cooling effect, both fluids are introduced to the blown article via a liquefied gas inlet. The liquefied gas maybe expanded through the use of a throttling device 14. Compressed air and liquefied gas maybe introduced to blow pin cylinders which may have two inlets, one for compressed air and one for liquefied gas. The process involves a number of valves and controls to control the flow of air 3 and liquefied gas 13, to control the pressure in the molded article 17 and mold cavity and to control the release of air and liquefied gas 15 from the mold cavity for which there is at least one outlet port. The valves to control the air and pressure inside the molded article and mold cavity are timed with the mold cycle as is the valve to control the liquefied gas.
GB1202855.1A 2012-02-20 2012-02-20 Decreasing mold residence time in extrusion blow molding Withdrawn GB2499454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1202855.1A GB2499454A (en) 2012-02-20 2012-02-20 Decreasing mold residence time in extrusion blow molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1202855.1A GB2499454A (en) 2012-02-20 2012-02-20 Decreasing mold residence time in extrusion blow molding

Publications (2)

Publication Number Publication Date
GB201202855D0 true GB201202855D0 (en) 2012-04-04
GB2499454A GB2499454A (en) 2013-08-21

Family

ID=45939856

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1202855.1A Withdrawn GB2499454A (en) 2012-02-20 2012-02-20 Decreasing mold residence time in extrusion blow molding

Country Status (1)

Country Link
GB (1) GB2499454A (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB891917A (en) * 1959-10-15 1962-03-21 Owens Illinois Glass Co Improvements in the manufacture of hollow thermoplastic articles
US3450805A (en) * 1966-08-29 1969-06-17 Phillips Petroleum Co Process of cooling a blown article
CH466552A (en) * 1966-12-08 1968-12-15 Proplasto Ag Manufacturing process of a hollow body
US3666849A (en) * 1968-01-22 1972-05-30 Phillips Petroleum Co Method of cooling thermoformed articles
JPS5850571B2 (en) * 1980-05-09 1983-11-11 大同酸素株式会社 Manufacturing method for hollow molded products
JPS5993330A (en) * 1982-11-19 1984-05-29 Dainippon Ink & Chem Inc Molding method of thermoplastic polyester heat resisting container and blow unit

Also Published As

Publication number Publication date
GB2499454A (en) 2013-08-21

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)