GB943748A - Improvements in or relating to the forming of hollow articles - Google Patents

Improvements in or relating to the forming of hollow articles

Info

Publication number
GB943748A
GB943748A GB44880/60A GB4488060A GB943748A GB 943748 A GB943748 A GB 943748A GB 44880/60 A GB44880/60 A GB 44880/60A GB 4488060 A GB4488060 A GB 4488060A GB 943748 A GB943748 A GB 943748A
Authority
GB
United Kingdom
Prior art keywords
tube
sleeve
extruded
degating
blow
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
GB44880/60A
Inventor
Robert Hiram Park
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.)
OI Glass Inc
Original Assignee
Brockway Glass Co 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 Brockway Glass Co Inc filed Critical Brockway Glass Co Inc
Priority to GB44880/60A priority Critical patent/GB943748A/en
Publication of GB943748A publication Critical patent/GB943748A/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
    • 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
    • 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
    • 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
    • B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
    • 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

943,748. Blow-moulding hollow articles. BROCKWAY GLASS CO. Inc. Dec. 30, 1960, No. 44880/60. Heading B5A. A tube of thermoplastic material is extruded downwardly from a chamber 22 having an orifice 26 and a central core comprising a fixed sleeve 28, a concentric sleeve 30, a degating sleeve 32 and a blow tube 34, the sleeves 30, 32 and blow tube 34 being slidable to control the extrusion process. The degating sleeve 32 is protected from thermoplastic material which oozes back between the parts 30 and 32 by a sleeve 40. In operation, with the parts set as in Fig. 2, the extruded tube is that part intended to form the body of the container. After extrusion of a suitable length the degating sleeve is moved slightly downwards so that a thinner tube is extruded which will form the shoulders of the blown article, and finally the blow tube 34 is moved to the position shown in Fig. 6 when the " false neck " part of the tube is extruded, this being later removed from the blown article. Then the degating sleeve 32 is moved downwardly to cut off the extruded tube as in Fig. 6 and the mould parts 51, 52 are closed about the tube to pinch its bottom end. Blowing air is supplied to the blow tube 34 to form the article in the mould, the mould being then opened leaving the article suspended on the blow tube, which is then retracted to remove it. The frusto-conical end of the control sleeve may be irregular so that the extruded tube may be thicker at some points than others, and this may be retracted after extrusion of the " body portion " in order to extrude a circular portion for the neck of the article. An alternative form of nozzle is shown in Fig. 10 where the thickness of the extruded tube may be controlled by the sleeve 80 without complete retraction of the degating sleeve 81 to give a better inside finish to the tube. In the case where articles with a thin neck portion are required, the resultant use of a thin degating sleeve gives a poor inside finish and this is overcome by the arrangement shown in Fig. 10 where the extrusion occurs between the orifice 77 and the bevelled end of the blow tube 82. Specification 932,967 is referred to.
GB44880/60A 1960-12-30 1960-12-30 Improvements in or relating to the forming of hollow articles Expired GB943748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB44880/60A GB943748A (en) 1960-12-30 1960-12-30 Improvements in or relating to the forming of hollow articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB44880/60A GB943748A (en) 1960-12-30 1960-12-30 Improvements in or relating to the forming of hollow articles

Publications (1)

Publication Number Publication Date
GB943748A true GB943748A (en) 1963-12-04

Family

ID=10435095

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44880/60A Expired GB943748A (en) 1960-12-30 1960-12-30 Improvements in or relating to the forming of hollow articles

Country Status (1)

Country Link
GB (1) GB943748A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0278399A2 (en) * 1987-02-12 1988-08-17 Ossberger-Turbinenfabrik Gmbh & Co. Apparatus with an annular orifice for the manufacture of a hollow plastics body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0278399A2 (en) * 1987-02-12 1988-08-17 Ossberger-Turbinenfabrik Gmbh & Co. Apparatus with an annular orifice for the manufacture of a hollow plastics body
EP0278399A3 (en) * 1987-02-12 1991-04-17 Ossberger-Turbinenfabrik Gmbh & Co. Apparatus with an annular orifice for the manufacture of a hollow plastics body

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