GB1456198A - Reinforced containers - Google Patents

Reinforced containers

Info

Publication number
GB1456198A
GB1456198A GB5508872A GB5508872A GB1456198A GB 1456198 A GB1456198 A GB 1456198A GB 5508872 A GB5508872 A GB 5508872A GB 5508872 A GB5508872 A GB 5508872A GB 1456198 A GB1456198 A GB 1456198A
Authority
GB
United Kingdom
Prior art keywords
layer
parison
container
die
foamed layer
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
GB5508872A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB5508872A priority Critical patent/GB1456198A/en
Publication of GB1456198A publication Critical patent/GB1456198A/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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/22—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • 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
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular 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
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/337—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates
    • B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
    • B29C48/705—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows in the die zone, e.g. to create flow homogeneity
    • 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

Landscapes

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

Abstract

1456198 Moulding plastics containers IMPERIAL CHEMICAL INDUSTRIES Ltd 26 Nov 1973 [29 Nov 1972] 55088/72 Heading B5A [Also in Divisions B8D and B8P] A container of plastics material, which is blow moulded or vacuum formed from an extruded tubular parison, comprises an unfoamed layer and a simultaneously extruded foamed layer which is absent from the region in which the container wall is welded together by clamping of the parison prior to the blow moulding or vacuum forming. The unfoamed layer may comprise a polyolefine or unsaturated nitrile polymer, and the foamed layer may be a thermosetting or thermoplastic plastics, but both layers preferably comprise polyolefines. The foamed layer is foamed before, during, or after the blow moulding or vacuum forming. The parison may be of circular section, but may be locally thickened when the container is of cubical shape. The foamed layer may be on the exterior or interior of the container, and may extend completely around the container circumference, or only part way therearound such as to leave a window unobscured by opaque foam, or may extend only along the corners or around only two sides of a cubical container. The die head from which the parison is extruded may comprise an annular extrusion outlet defined between a mandrel 1 and a surrounding die 3, Fig. 2, to which the plastics of the unfoamed and foamed layers are respectively delivered along passages 7, 6, on either side of a partition 5. The absence of the foamed layer from the clamping region of the parison is obtained by displacing the partition 5 to engage the mandrel 1, at 9, and close the passage 6, the parison so being produced having the foamed layer 26 inset within the unfoamed layer 27, Fig. 2A. By displacing the mandrel 1 away from the partition 5 when both layers are being extruded, the foam layer is proud of the unfoamed layer, Figs. 3 and 3A (not shown). The die may also be displaceable, but where the foamed layer is outermost, the intermittent extrusion is preferably effected by the partition being displaceable into engagement with the die. When extruding downwardly, the die parts may be displaceable to compensate for progressive thinning of the parison during extrusion. A passage, or spaced passages 6, may alternately extend part way around the die outlet to produce the corresponding foamed layer, or layers spaced apart around the container periphery.
GB5508872A 1972-11-29 1972-11-29 Reinforced containers Expired GB1456198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5508872A GB1456198A (en) 1972-11-29 1972-11-29 Reinforced containers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5508872A GB1456198A (en) 1972-11-29 1972-11-29 Reinforced containers

Publications (1)

Publication Number Publication Date
GB1456198A true GB1456198A (en) 1976-11-17

Family

ID=10472921

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5508872A Expired GB1456198A (en) 1972-11-29 1972-11-29 Reinforced containers

Country Status (1)

Country Link
GB (1) GB1456198A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0296370A2 (en) * 1987-06-22 1988-12-28 BEKUM Maschinenfabriken GmbH Coextrusion head
EP0321946A2 (en) * 1987-12-21 1989-06-28 E.I. Du Pont De Nemours And Company Improved coextrusion blowmolding process
EP0370695A2 (en) * 1988-11-23 1990-05-30 American National Can Company Extrusion dies and apparatus, methods of extrusion and extruded articles
GB2191145B (en) * 1986-06-04 1990-08-15 Ex Cell O Corp Apparatus for forming a single layer parison of plastics material.
EP0430596A1 (en) * 1989-11-28 1991-06-05 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Parison head for use in a multi-layer blow moulding machine
EP0457991A1 (en) * 1990-05-25 1991-11-27 Hoover Universal,Inc. Multiple layer die head with adjustable gaps
EP0468268A2 (en) * 1990-07-24 1992-01-29 Bridgestone/Firestone, Inc. Coextrusion apparatus for varying the inner and/or outer profile of a tubular extrudate
EP0468261A2 (en) * 1990-07-24 1992-01-29 Bridgestone/Firestone, Inc. Coextrusion apparatus and method for varying the inner profile of a tubular extrudate
US5156857A (en) * 1988-11-23 1992-10-20 American National Can Company Extrusion die for extrusion blow molding equipment
US5328651A (en) * 1993-03-05 1994-07-12 Davidson Textron Inc. Method for manufacturing an automobile trim component by blow molding and injection molding
US5653265A (en) * 1984-02-13 1997-08-05 Excell Corporation Hollow plastic product
US6119731A (en) * 1984-02-13 2000-09-19 Excell Corporation Hollow plastic product
GB2397212B (en) * 2001-11-29 2005-12-07 Isp Investments Inc Process and equipment for making simulated olive products by coextrusion, and obtainable product
CN113172861A (en) * 2021-05-12 2021-07-27 台州市卓信塑业有限公司 Converging device of extruder

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6319454B1 (en) 1984-02-13 2001-11-20 Excell Corporation Method and apparatus for manufacturing a hollow plastic product
US5653265A (en) * 1984-02-13 1997-08-05 Excell Corporation Hollow plastic product
US6119731A (en) * 1984-02-13 2000-09-19 Excell Corporation Hollow plastic product
US5156796A (en) * 1986-06-04 1992-10-20 Excell Corporation Forming hollow plastic product partially different in composition and its manufacturing apparatus
GB2191145B (en) * 1986-06-04 1990-08-15 Ex Cell O Corp Apparatus for forming a single layer parison of plastics material.
EP0296370A3 (en) * 1987-06-22 1990-05-02 BEKUM Maschinenfabriken GmbH Coextrusion head
EP0296370A2 (en) * 1987-06-22 1988-12-28 BEKUM Maschinenfabriken GmbH Coextrusion head
EP0321946A3 (en) * 1987-12-21 1990-05-09 E.I. Du Pont De Nemours And Company Improved coextrusion blowmolding process
EP0321946A2 (en) * 1987-12-21 1989-06-28 E.I. Du Pont De Nemours And Company Improved coextrusion blowmolding process
EP0370695A3 (en) * 1988-11-23 1991-01-23 American National Can Company Extrusion dies and apparatus, methods of extrusion and extruded articles
EP0370695A2 (en) * 1988-11-23 1990-05-30 American National Can Company Extrusion dies and apparatus, methods of extrusion and extruded articles
US5156857A (en) * 1988-11-23 1992-10-20 American National Can Company Extrusion die for extrusion blow molding equipment
EP0430596A1 (en) * 1989-11-28 1991-06-05 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Parison head for use in a multi-layer blow moulding machine
EP0457991A1 (en) * 1990-05-25 1991-11-27 Hoover Universal,Inc. Multiple layer die head with adjustable gaps
EP0468261A2 (en) * 1990-07-24 1992-01-29 Bridgestone/Firestone, Inc. Coextrusion apparatus and method for varying the inner profile of a tubular extrudate
EP0468268A3 (en) * 1990-07-24 1992-04-29 Bridgestone/Firestone, Inc. Coextrusion apparatus for varying the inner and/or outer profile of a tubular extrudate
EP0468261A3 (en) * 1990-07-24 1992-04-29 Bridgestone/Firestone, Inc. Coextrusion apparatus and method for varying the inner profile of a tubular extrudate
EP0468268A2 (en) * 1990-07-24 1992-01-29 Bridgestone/Firestone, Inc. Coextrusion apparatus for varying the inner and/or outer profile of a tubular extrudate
US5328651A (en) * 1993-03-05 1994-07-12 Davidson Textron Inc. Method for manufacturing an automobile trim component by blow molding and injection molding
GB2397212B (en) * 2001-11-29 2005-12-07 Isp Investments Inc Process and equipment for making simulated olive products by coextrusion, and obtainable product
US7550171B2 (en) 2001-11-29 2009-06-23 Fmc Corporation Process and equipment for making simulated olive products by coextrusion, and obtainable product
CN113172861A (en) * 2021-05-12 2021-07-27 台州市卓信塑业有限公司 Converging device of extruder

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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