GB1389572A - Method of internally coating rigid or semirigid plastics hollow articles - Google Patents

Method of internally coating rigid or semirigid plastics hollow articles

Info

Publication number
GB1389572A
GB1389572A GB2477072A GB2477072A GB1389572A GB 1389572 A GB1389572 A GB 1389572A GB 2477072 A GB2477072 A GB 2477072A GB 2477072 A GB2477072 A GB 2477072A GB 1389572 A GB1389572 A GB 1389572A
Authority
GB
United Kingdom
Prior art keywords
article
coating
coated
rigid
parison
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
GB2477072A
Other languages
English (en)
Inventor
D E Clark
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB1389572A publication Critical patent/GB1389572A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • B05D7/227—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of containers, cans or the like
    • 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
    • B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/002—Processes for applying liquids or other fluent materials the substrate being rotated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2201/00—Polymeric substrate or laminate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B05D3/0263—After-treatment with IR heaters
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/22—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at neck portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/24—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at flange portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/26—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at body portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/28—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at bottom portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3008—Preforms or parisons made of several components at neck portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3012—Preforms or parisons made of several components at flange portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3016—Preforms or parisons made of several components at body portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/302—Preforms or parisons made of several components at bottom portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3024—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3024—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique
    • B29C2949/3026—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique having two or more components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31511—Of epoxy ether

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
GB2477072A 1971-05-26 1972-05-25 Method of internally coating rigid or semirigid plastics hollow articles Expired GB1389572A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00147120A US3804663A (en) 1971-05-26 1971-05-26 Method of internally coating rigid or semi-rigid plastic containers

Publications (1)

Publication Number Publication Date
GB1389572A true GB1389572A (en) 1975-04-03

Family

ID=22520360

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2477072A Expired GB1389572A (en) 1971-05-26 1972-05-25 Method of internally coating rigid or semirigid plastics hollow articles

Country Status (11)

Country Link
US (1) US3804663A (enExample)
AU (1) AU465035B2 (enExample)
BE (1) BE783932A (enExample)
BR (1) BR7203328D0 (enExample)
CA (1) CA950281A (enExample)
DE (1) DE2225040A1 (enExample)
FR (1) FR2139027B1 (enExample)
GB (1) GB1389572A (enExample)
IT (1) IT958018B (enExample)
NL (1) NL7206817A (enExample)
SE (1) SE374317B (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138736A (en) * 1983-04-19 1984-10-31 Spiess & Sohn Kunststoffwerk G Making Multilayer Hollow Plastics Bodies
GB2237790A (en) * 1989-11-10 1991-05-15 Ici Plc Container for hazardous materials adapted for safe disposal or reuse
JP2002143300A (ja) * 2000-07-28 2002-05-21 Carl Zeiss:Fa 医療用円筒容器の内壁に熱付着性潤滑剤コーティングを施すための方法及び装置

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US4025664A (en) * 1974-01-02 1977-05-24 Eppco Container coating method
US4169906A (en) * 1975-09-15 1979-10-02 Rexnord Inc. Wear resistant coated pipe and method of making it
US4093350A (en) * 1976-05-19 1978-06-06 Xerox Corporation System for centrifugally casting a thin film plastic in a replica process for providing multi-faceted polygonal scanners
SE414486B (sv) 1977-05-13 1980-08-04 Plm Ab Behallare for ljuskensligt gods
US4262627A (en) * 1977-06-24 1981-04-21 Rexnord, Inc. Apparatus for coating the inside of pipe
US4515832A (en) * 1977-06-24 1985-05-07 Rexnord, Inc. Method for coating the inside of pipe
JPS5951889B2 (ja) * 1979-08-31 1984-12-17 固 青木 射出延伸吹込成形法
AU6093480A (en) * 1979-10-04 1981-04-09 Schenectady Chemicals Inc. Microwave curing of resins
US4486378A (en) * 1980-05-07 1984-12-04 Toyo Seikan Kaisha Ltd. Plastic bottles and process for preparation thereof
US4370368A (en) * 1980-05-07 1983-01-25 Toyo Seikan Kaisha, Ltd. Plastic bottles and process for preparation thereof
US4311250A (en) * 1980-05-12 1982-01-19 The Continental Group, Inc. Container having internal wall surfaces modified to reduce carbonation loss
US4393106A (en) * 1980-10-31 1983-07-12 Toyo Seikan Kaisha Ltd. Laminated plastic container and process for preparation thereof
US4427470A (en) 1981-09-01 1984-01-24 University Of Utah Vacuum molding technique for manufacturing a ventricular assist device
JPS5878732A (ja) * 1981-11-05 1983-05-12 Toyo Seikan Kaisha Ltd 被覆配向プラスチツクびんの製造方法
US4473423A (en) 1982-05-03 1984-09-25 University Of Utah Artificial heart valve made by vacuum forming technique
JPS58208046A (ja) * 1982-05-28 1983-12-03 東洋製罐株式会社 配向された被覆を有するプラスチツク容器及びその製法
US4515836A (en) * 1982-07-16 1985-05-07 Nordson Corporation Process for coating substrates with aqueous polymer dispersions
SE435866B (sv) * 1983-04-06 1984-10-22 Vj System Ab Forfarande och anordning for infodring av rorledningar, med en flexibel, herdbar plast innehallande slang
US4650699A (en) * 1983-04-18 1987-03-17 Sermetel Thixotropic alumina coating compositions, parts and methods
FR2551074B1 (fr) * 1983-08-24 1985-11-22 Rambaud Jean Michel Composition et procede pour le revetement d'objets en resine acrylique, et objets ainsi revetus
GB8400233D0 (en) * 1984-01-05 1984-02-08 Edgealpha Ltd Lining pipelines and passageways
US4554347A (en) * 1984-07-20 1985-11-19 W. R. Grace & Co. Microwave curing of latex-based compositions
US4675139A (en) * 1985-10-21 1987-06-23 Continental Can Company, Inc. Method of forming plastisol gaskets in container closures fabricated from synthetic plastic resins
US4851337A (en) * 1986-01-08 1989-07-25 Hygeia Sciences, Inc. Extraction of test substances
US4846359A (en) * 1987-12-18 1989-07-11 The Procter & Gamble Company Multi-layered plastic bottle having integrally formed handle and method of making
WO1992005026A1 (en) * 1990-09-13 1992-04-02 Wellstar Holding B.V. Preform for polyester bottle
US5766489A (en) * 1993-09-13 1998-06-16 Pts Gesellschaft Fuer Physikalisch-Technische Studien Jena Mbh Process and arrangement for continously carrying out photoreactions in a liquid phase
US5571470A (en) 1994-02-18 1996-11-05 The Coca-Cola Company Method for fabricating a thin inner barrier layer within a preform
US5500308A (en) * 1994-05-02 1996-03-19 Rayovac Corporation Electrochemical cell having an inner seal member
BR9609378A (pt) * 1995-06-26 1999-12-21 Emery I Valyi Recipiente de plástico moldado para bebidas e alimentos e processo de fabricação do mesmo.
US5632406A (en) * 1995-10-11 1997-05-27 Robbins, Iii; Edward S. Side wall construction for collapsible containers
US5860556A (en) * 1996-04-10 1999-01-19 Robbins, Iii; Edward S. Collapsible storage container
US5965081A (en) * 1996-05-16 1999-10-12 The Coca-Cola Company Method of making side-gated preforms for use in blow molding plastic bottles
US5851471A (en) * 1996-05-16 1998-12-22 The Coca-Cola Company Method for injection molding a multi-layer preform for use in blow molding a plastic bottle
US5707691A (en) * 1996-08-27 1998-01-13 The Coca-Cola Company Coating hollow containers by in-situ polymerization of monomers in bi-axially orientated form
US5915419A (en) * 1997-11-26 1999-06-29 Insituform (Netherlands) B.V. Cured in place lateral seal for relining of pipelines and method of manufacture
US6029726A (en) * 1997-11-26 2000-02-29 Insituform (Netherlands) B.V. Apparatus for installing a flexible cured in place lateral seal in an existing main pipeline
US6068725A (en) * 1997-11-26 2000-05-30 Insituform (Netherlands) B.V. Method of installation of a flexible cured in place lateral seal in an existing main pipeline
FR2780665B1 (fr) * 1998-07-03 2000-09-15 Oreal Procede et dispositif pour appliquer un revetement tel qu'une peinture ou un vernis
US6393803B1 (en) 1998-11-06 2002-05-28 Graham Packaging Company, L.P. Process for coating blow-molded plastic containers
US6331331B1 (en) 1999-04-29 2001-12-18 Colgate-Palmolive Company Decorated polyester tube package for aqueous compositions
WO2001013785A2 (en) * 1999-08-20 2001-03-01 Acist Medical Systems, Inc. Apparatus and method of detecting fluid
US6545594B1 (en) 2000-05-25 2003-04-08 The Coca-Cola Company Audio closure
US8003179B2 (en) 2002-06-20 2011-08-23 Alcan Packaging Flexible France Films having a desiccant material incorporated therein and methods of use and manufacture
US8110260B2 (en) 2007-02-02 2012-02-07 Rick Merical Containers intended for moisture-sensitive products
US7871558B2 (en) 2002-06-20 2011-01-18 Alcan Global Pharmaceutical Packaging, Inc. Containers intended for moisture-sensitive products
BRPI0417963A (pt) * 2003-12-22 2007-03-27 Nova Chem Inc recipiente termoplástico moldado, método para formar um recipiente para reter substáncias lìquidas e alimentìcias, artigo de fabricação, e, método para armazenar substáncias lìquidas e alimentìcias
US20070080163A1 (en) * 2005-10-12 2007-04-12 Sar Holdings International Ltd. Flexible mould for food baking
US20110020576A1 (en) * 2009-07-24 2011-01-27 Fina Technology, Inc. Polystyrene Preform Design for Blow Molding of Articles
US20140203019A1 (en) * 2010-10-19 2014-07-24 Superfos A/S Container comprising an inner lining, a method of applying such a lining to a container and use of a peel-able coating as an inner lining in a container
WO2014187725A1 (en) 2013-05-20 2014-11-27 Unilever Plc A process for coating containers
US12280396B2 (en) 2019-04-19 2025-04-22 Photex Inc. Narrowband can manufacturing
BR112021020607A2 (pt) * 2019-04-19 2022-02-15 Photex Inc Sistema e método para curar o interior de uma lata

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US2330124A (en) * 1940-10-12 1943-09-21 Gen Mills Inc Apparatus for waxing cartons
US2892733A (en) * 1955-09-16 1959-06-30 Plax Corp Method and apparatus for treating synthetic resin containers
US3219472A (en) * 1961-09-29 1965-11-23 Johns Manville Method of coating the interior surface of a porous pipe
US3222725A (en) * 1961-10-25 1965-12-14 Neirad Ind Inc Molding process and apparatus
US3449479A (en) * 1966-06-17 1969-06-10 Phillips Petroleum Co Method for coating the interior surface of a polyolefin article with an impermeable polymer
US3468994A (en) * 1966-06-27 1969-09-23 Phillips Petroleum Co Dimethylsulfoxide in solvent system for polyolefin coating composition
US3535137A (en) * 1967-01-13 1970-10-20 Ibm Method of fabricating etch resistant masks
US3563791A (en) * 1969-05-09 1971-02-16 Nathan Janco Method of coating the inside of a cylindrical member
US3696987A (en) * 1971-02-26 1972-10-10 Dart Ind Inc Coated cup and method of manufacture

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138736A (en) * 1983-04-19 1984-10-31 Spiess & Sohn Kunststoffwerk G Making Multilayer Hollow Plastics Bodies
GB2237790A (en) * 1989-11-10 1991-05-15 Ici Plc Container for hazardous materials adapted for safe disposal or reuse
GB2237790B (en) * 1989-11-10 1994-05-11 Ici Plc A method of removing chemical residues from a container
JP2002143300A (ja) * 2000-07-28 2002-05-21 Carl Zeiss:Fa 医療用円筒容器の内壁に熱付着性潤滑剤コーティングを施すための方法及び装置

Also Published As

Publication number Publication date
BE783932A (fr) 1972-11-27
CA950281A (en) 1974-07-02
DE2225040A1 (de) 1972-12-07
SE374317B (enExample) 1975-03-03
FR2139027A1 (enExample) 1973-01-05
AU465035B2 (en) 1975-09-18
BR7203328D0 (pt) 1973-05-10
US3804663A (en) 1974-04-16
AU4198172A (en) 1973-11-08
IT958018B (it) 1973-10-20
FR2139027B1 (enExample) 1976-01-16
NL7206817A (enExample) 1972-11-28

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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