AU7832587A - Method and apparatus for making a partially crystalline, biaxially oriented heat set hollow plastic container - Google Patents

Method and apparatus for making a partially crystalline, biaxially oriented heat set hollow plastic container

Info

Publication number
AU7832587A
AU7832587A AU78325/87A AU7832587A AU7832587A AU 7832587 A AU7832587 A AU 7832587A AU 78325/87 A AU78325/87 A AU 78325/87A AU 7832587 A AU7832587 A AU 7832587A AU 7832587 A AU7832587 A AU 7832587A
Authority
AU
Australia
Prior art keywords
making
biaxially oriented
plastic container
heat set
partially crystalline
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.)
Granted
Application number
AU78325/87A
Other versions
AU580219B2 (en
Inventor
Prakash R. Ajmera
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.)
Graham Packaging Plastic Products Inc
Original Assignee
Owens Illinois Plastic Products Inc
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 Owens Illinois Plastic Products Inc filed Critical Owens Illinois Plastic Products Inc
Publication of AU7832587A publication Critical patent/AU7832587A/en
Application granted granted Critical
Publication of AU580219B2 publication Critical patent/AU580219B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • B29C49/64—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
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6604—Thermal conditioning of 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
    • B29C49/08—Biaxial stretching during blow-moulding
    • B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
    • B29C49/12—Stretching rods
    • 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
    • B29C49/58—Blowing means
    • 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
    • B29C49/6472—Heating or cooling preforms, parisons or blown articles in several stages
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/16—Cooling
    • B29C2035/1616—Cooling using liquids
    • B29C2035/1625—Cooling using liquids other than water
    • B29C2035/165—Cooling using liquids other than water liquified gases
    • 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
    • B29C2049/4608—Nitrogen
    • 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
    • B29C2049/4626—Blowing fluids containing carbon dioxide
    • 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
    • B29C49/6604—Thermal conditioning of the blown article
    • B29C2049/6606—Cooling the article
    • B29C2049/6607—Flushing blown articles
    • B29C2049/6615—Flushing blown articles and exhausting through the blowing means
    • 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
    • B29C49/78—Measuring, controlling or regulating
    • B29C49/783—Measuring, controlling or regulating blowing pressure
    • B29C2049/7832—Blowing with two or more pressure levels
    • 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
    • B29C49/78—Measuring, controlling or regulating
    • B29C49/786—Temperature
    • B29C2049/7861—Temperature of the preform
    • B29C2049/7862—Temperature of the preform characterised by temperature values or ranges
    • 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
    • B29C49/78—Measuring, controlling or regulating
    • B29C49/786—Temperature
    • B29C2049/7864—Temperature of the mould
    • B29C2049/78645—Temperature of the mould characterised by temperature values or ranges
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/20—Opening, closing or clamping
    • B29C33/26—Opening, closing or clamping by pivotal movement
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • 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
    • B29C49/4205—Handling means, e.g. transfer, loading or discharging means
    • B29C49/42073—Grippers
    • B29C49/42075—Grippers with pivoting clamps
    • 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
    • B29C49/4205—Handling means, e.g. transfer, loading or discharging means
    • B29C49/42073—Grippers
    • B29C49/42085—Grippers holding inside the neck
    • 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
    • B29C49/68—Ovens specially adapted for heating preforms or parisons
    • B29C49/6855—Cooling of heating means, e.g. avoiding overheating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0012—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular thermal properties
    • B29K2995/0017—Heat stable

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)
AU78325/87A 1986-09-22 1987-09-11 Method and apparatus for making a partially crystalline, biaxially oriented heat set hollow plastic container Ceased AU580219B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US90980086A 1986-09-22 1986-09-22
US909800 1986-09-22

Publications (2)

Publication Number Publication Date
AU7832587A true AU7832587A (en) 1988-03-24
AU580219B2 AU580219B2 (en) 1989-01-05

Family

ID=25427858

Family Applications (1)

Application Number Title Priority Date Filing Date
AU78325/87A Ceased AU580219B2 (en) 1986-09-22 1987-09-11 Method and apparatus for making a partially crystalline, biaxially oriented heat set hollow plastic container

Country Status (7)

Country Link
JP (1) JPS6384918A (en)
AU (1) AU580219B2 (en)
CA (1) CA1288913C (en)
DE (1) DE3729166A1 (en)
FR (1) FR2604118B1 (en)
GB (1) GB2195287B (en)
ZA (1) ZA876266B (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4790741A (en) * 1987-08-07 1988-12-13 Toyo Seikan Kaisha, Ltd. Apparatus for preparing heat-set plastic hollow vessel
FR2649035B1 (en) * 1989-06-29 1991-10-25 Sidel Sa METHOD OF MANUFACTURING BY STRETCH-BLOWING POLYETHYLENETEREPHTHALATE CONTAINERS FOR FILLING WITH HOT LIQUID
GB2238975A (en) * 1989-12-15 1991-06-19 Metal Box Plc Heatsetting of thermoplastics tubular articles
US5133468A (en) * 1991-06-14 1992-07-28 Constar Plastics Inc. Footed hot-fill container
JPH08164953A (en) * 1994-11-24 1996-06-25 Aoto Insatsu Kk Packaging bag and production thereof
US6168414B1 (en) * 1997-10-31 2001-01-02 Electra Form, Inc. Apparatus for cryogenic stretch blow molding
DE10340915A1 (en) 2003-09-05 2005-03-31 Sig Technology Ltd. Method and device for blow-molding workpieces
WO2005023517A1 (en) * 2003-09-05 2005-03-17 Sig Technology Ltd. Method and device for blow-forming containers
DE102006032140A1 (en) 2006-07-12 2008-02-21 Sig Technology Ltd. Method and apparatus for blow molding containers
JP4858035B2 (en) * 2006-09-19 2012-01-18 トヨタ自動車株式会社 Reactor core and reactor
DE102008049905A1 (en) * 2008-10-02 2010-04-08 Krones Ag Quick change system for stretching bars
WO2011079917A1 (en) * 2009-12-17 2011-07-07 Norgren Gmbh A blow-molding system with a stretch rod including one or more valves, a rod for a blow moulding system and a method for operating a blow-moulding
EP2670666B1 (en) 2011-01-31 2020-03-04 KHS GmbH Method and apparatus for making liquid-filled containers
DE102013111029A1 (en) * 2013-10-04 2015-04-09 Krones Ag Blow molding machine with blow piston with obliquely arranged connection lines
DE102018214531A1 (en) * 2018-08-28 2020-03-05 Krones Ag Container treatment plant and method for the production of plastic containers
DE102019116598A1 (en) * 2019-06-19 2020-12-24 Khs Corpoplast Gmbh Method and device for producing filled containers from preforms

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE28497E (en) * 1959-10-15 1975-07-29 Method of and apparatus for making a plastic article
FR2122351A1 (en) * 1971-01-22 1972-09-01 Air Liquide Blow moulding - using chilled gas circulation or injection for accelerated cooling of mouldings
DE2434977A1 (en) * 1974-07-19 1976-02-05 Buse Kohlensaeure Cooling blow moulded thermoplastic resin articles - by introducing controlled amount of liquefied cooling agent below room temp
GB1474044A (en) * 1974-12-03 1977-05-18 Ici Ltd Plastics container manufacture
GB1526492A (en) * 1976-02-09 1978-09-27 Farrell Plastic Mach Manufacture of plastics material articles
FR2389478B1 (en) * 1977-05-04 1980-11-28 Rhone Poulenc Ind
DE2933639C2 (en) * 1979-08-07 1982-11-11 Yoshino Kogyosho Co., Ltd., Tokyo Method of making a thin-walled bottle-shaped container from saturated polyester
JPS5712617A (en) * 1980-06-26 1982-01-22 Mitsubishi Plastics Ind Ltd Production of bottle
US4512948A (en) * 1982-03-03 1985-04-23 Owens-Illinois, Inc. Method for making poly(ethylene terephthalate) article
US4476170A (en) * 1982-03-03 1984-10-09 Owens-Illinois, Inc. Poly(ethylene terephthalate) articles and method
JPS5993330A (en) * 1982-11-19 1984-05-29 Dainippon Ink & Chem Inc Molding method of thermoplastic polyester heat resisting container and blow unit
US4764403A (en) * 1986-11-10 1988-08-16 Owens-Illinois Plastic Products Inc. Multilayer biaxially oriented heat set articles

Also Published As

Publication number Publication date
GB8718440D0 (en) 1987-09-09
DE3729166C2 (en) 1989-09-14
FR2604118A1 (en) 1988-03-25
ZA876266B (en) 1988-03-01
FR2604118B1 (en) 1994-07-29
CA1288913C (en) 1991-09-17
DE3729166A1 (en) 1988-04-21
JPS6384918A (en) 1988-04-15
AU580219B2 (en) 1989-01-05
GB2195287A (en) 1988-04-07
GB2195287B (en) 1990-05-02
JPH0535666B2 (en) 1993-05-27

Similar Documents

Publication Publication Date Title
AU580219B2 (en) Method and apparatus for making a partially crystalline, biaxially oriented heat set hollow plastic container
AU585522B2 (en) Method and apparatus for manufacturing a hollow plastic product
AU7846987A (en) Method and apparatus for forming end panels for containers and end panels formed thereby
AU2406288A (en) A container with a label and a method for manufacturing the same
AU8051387A (en) Method and apparatus for forming container end panels
AU1103788A (en) Process and device for producing large hollow plastic bodies with multi-layered walls
EP0334998A3 (en) Process for making a microporous film
GB2190323B (en) Process and apparatus for producing tube-type containers
AU5121490A (en) Process for producing biaxially oriented nylon film
EP0260938A3 (en) Erythromycin a derivatives and method for preparing the same
DE3663119D1 (en) Process and apparatus for taking up, transporting and depositing a soft plastic sheet
AU1435088A (en) Apparatus for forming a blown bottle with a handle and method of forming the same
AU641945B2 (en) Method for manufacturing biaxially oriented blow containers and apparatus for manufacturing the same
EP0359971A3 (en) Method of manufacturing hollow plastics containers
IL84568A0 (en) Method for releasing pheromones using plastic containers
AU1210688A (en) Crystallized cephem-acid addition salts, and a process for the preparation thereof
AU5314690A (en) Method and apparatus for forming a fabricated thermoplastic container
AU1730588A (en) Polypropylene articles and method for preparing same
GB8823533D0 (en) Method & apparatus for effecting bioreaction
GB2107636B (en) Method and apparatus for producing biaxially oriented hollow articles
AU8086387A (en) A plastic tube, a method of and an apparatus for the production thereof
AU1516488A (en) Method and device for placing plastic tubes into existing openings
AR243795A1 (en) A method for preparing irradiated polypropene articles.
AU586925B2 (en) Method for producing tubular plastic containers
AU635544B2 (en) Apparatus for producing a controlled atmosphere in containers

Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired