GB305152A - Improvements in or relating to the manufacture of articles containing material at one stage plastic, and particularly in or relating to the extrusion of the said plastic content - Google Patents

Improvements in or relating to the manufacture of articles containing material at one stage plastic, and particularly in or relating to the extrusion of the said plastic content

Info

Publication number
GB305152A
GB305152A GB29008/27A GB2900827A GB305152A GB 305152 A GB305152 A GB 305152A GB 29008/27 A GB29008/27 A GB 29008/27A GB 2900827 A GB2900827 A GB 2900827A GB 305152 A GB305152 A GB 305152A
Authority
GB
United Kingdom
Prior art keywords
extrusion
aperture
relating
sleeve
tube
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
GB29008/27A
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.)
Dunlop Rubber Co Ltd
Original Assignee
Dunlop Rubber Co 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 Dunlop Rubber Co Ltd filed Critical Dunlop Rubber Co Ltd
Priority to GB29008/27A priority Critical patent/GB305152A/en
Publication of GB305152A publication Critical patent/GB305152A/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
    • B29C48/25—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
    • B29C48/07—Flat, e.g. panels
    • 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)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

305,152. Dunlop Rubber Co., Ltd., and Fellowes, F. Oct. 31, 1927. Extrusion machines. - Consists in the production of tapered or bevelled lengths of material by extrusion through a variable die. Figs. 1 and 3 show one form of apparatus, for the production of tyre tubes for india-rubber, wherein the extrusion aperture is formed between a stationary core 1 and a sleeve 2 reciprocable axially by a cam member 8. Through a crank 15, linkage 16 and connection 8a, the member 8 is rocked in such a manner as firstly, to move back the sleeve 2 gradually to close the aperture 7 and bevel the end of one length of tube, secondly to cause momentary closure of the aperture to sever the length and, thirdly, to return the sleeve gradually to open the aperture to bevel the oncoming end of the next length of tube. Fig. 6 shows a modified die for producing tread strips, in which a slit-like extrusion aperture 26 is gradually restricted and freed by a sliding member 25 operated through a crank linkage. In a further modification, for tubes, the die is controlled by an iris-diaphragm device. Tubes may be extruded on to mandrels ready for vulcanization. Fig. 5 shows a tubular mandrel 17 furnished with a ring 18 complementary to the taper of the tube, the ring being either sprung over the taper or formed of segments convergeable by an auxiliary ring 18<a>. This mandrel, and also variable extrusion dies, are disclaimed.
GB29008/27A 1927-10-31 1927-10-31 Improvements in or relating to the manufacture of articles containing material at one stage plastic, and particularly in or relating to the extrusion of the said plastic content Expired GB305152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB29008/27A GB305152A (en) 1927-10-31 1927-10-31 Improvements in or relating to the manufacture of articles containing material at one stage plastic, and particularly in or relating to the extrusion of the said plastic content

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29008/27A GB305152A (en) 1927-10-31 1927-10-31 Improvements in or relating to the manufacture of articles containing material at one stage plastic, and particularly in or relating to the extrusion of the said plastic content

Publications (1)

Publication Number Publication Date
GB305152A true GB305152A (en) 1929-01-31

Family

ID=10284768

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29008/27A Expired GB305152A (en) 1927-10-31 1927-10-31 Improvements in or relating to the manufacture of articles containing material at one stage plastic, and particularly in or relating to the extrusion of the said plastic content

Country Status (1)

Country Link
GB (1) GB305152A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184792A (en) * 1962-12-31 1965-05-25 Nat Distillers Chem Corp Variable orifice extrusion die

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184792A (en) * 1962-12-31 1965-05-25 Nat Distillers Chem Corp Variable orifice extrusion die

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