GB1284735A - Method and apparatus for the manufacture of pneumatic tyres - Google Patents

Method and apparatus for the manufacture of pneumatic tyres

Info

Publication number
GB1284735A
GB1284735A GB2008469A GB2008469A GB1284735A GB 1284735 A GB1284735 A GB 1284735A GB 2008469 A GB2008469 A GB 2008469A GB 2008469 A GB2008469 A GB 2008469A GB 1284735 A GB1284735 A GB 1284735A
Authority
GB
United Kingdom
Prior art keywords
tube
sheet
circumference
breaker
allowed
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
GB2008469A
Inventor
David Mountford
Colin Peter Bowers
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 Holdings Ltd
Original Assignee
Dunlop Holdings 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 Holdings Ltd filed Critical Dunlop Holdings Ltd
Priority to GB2008469A priority Critical patent/GB1284735A/en
Priority to AU13997/70A priority patent/AU1399770A/en
Priority to NL7005556A priority patent/NL7005556A/xx
Priority to FR7013972A priority patent/FR2045400A5/fr
Priority to BE749142D priority patent/BE749142A/en
Priority to DE19702018930 priority patent/DE2018930A1/en
Publication of GB1284735A publication Critical patent/GB1284735A/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
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)
  • Tires In General (AREA)

Abstract

1284735 Making pneumatic tyres DUNLOP HOLDINGS Ltd 15 April 1970 [19 April 1969] 20084/69 Heading B7C In an apparatus for making pneumatic tyres a cylindrical tube of reinforced elastomeric material having a circumference approximately equal to the circumference of the bead regions of a finished tyre is stretched to a circumference approximaately equal to circumference of the crown region of the finished tyre and successive strips of unstretched material are adhesively applied circumferentially to the external periphery of the tube, spaced apart from each other, the tube is severed in the spaces between successive strips and the regions of the tube not in contact with a strip are allowed to contract and return to their unstretched diameter. A sheet of porous elastomer 1 (e.g. reticulated flexible polyurethane foam) is unwound from a roller 2 and sprayed with adhesive from a gun 4 and brought into contact with parallel cord fabric 6 to form a laminated sheet which is passed through nip rollers 5 into driven rollers 8 which form the sheet into a tube, foam side innermost. The sheet 1 is a half-inch wider than the fabric 6 and the resultant unlaminated edge is coated with adhesive by a roller 9 and joined to the other edge to complete and seam the tube. Driven rollers 11 stretch the tube and further rollers 17 maintain it in the stretched condition while four superimposed breaker plies 12 are applied to it. The tube is then cut midway between two adjacent breakers to form a portion 13, the ends 14 of which are allowed to relax but that part in the vicinity of the breaker remains stretched. The portion is then placed on a collapsible tyre building machine, beads are positioned and turn-up effected, as at 15. The portion is subsequently placed in an inflatable mould 16 mounted on a centrifuge, polyurethane is applied and allowed to set. Non-porous elastomeric material may be used for the sheet 1 and if two or more plies are required in the carcass the breaker plies 12 are positioned further apart and the ends of the tube are turned up as far as the breaker layer or to the opposite bead wire; in this case foam sheet is applied to both sides of the cord fabric.
GB2008469A 1969-04-19 1969-04-19 Method and apparatus for the manufacture of pneumatic tyres Expired GB1284735A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB2008469A GB1284735A (en) 1969-04-19 1969-04-19 Method and apparatus for the manufacture of pneumatic tyres
AU13997/70A AU1399770A (en) 1969-04-19 1970-04-17 Manufacture of pneumatic tyres
NL7005556A NL7005556A (en) 1969-04-19 1970-04-17
FR7013972A FR2045400A5 (en) 1969-04-19 1970-04-17
BE749142D BE749142A (en) 1969-04-19 1970-04-17 MANUFACTURING OF TIRES
DE19702018930 DE2018930A1 (en) 1969-04-19 1970-04-20 Manufacture of pneumatic tires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2008469A GB1284735A (en) 1969-04-19 1969-04-19 Method and apparatus for the manufacture of pneumatic tyres

Publications (1)

Publication Number Publication Date
GB1284735A true GB1284735A (en) 1972-08-09

Family

ID=10140110

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2008469A Expired GB1284735A (en) 1969-04-19 1969-04-19 Method and apparatus for the manufacture of pneumatic tyres

Country Status (6)

Country Link
AU (1) AU1399770A (en)
BE (1) BE749142A (en)
DE (1) DE2018930A1 (en)
FR (1) FR2045400A5 (en)
GB (1) GB1284735A (en)
NL (1) NL7005556A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2653022C3 (en) * 1976-11-22 1979-09-20 Schroecker, Erika, Zuerich (Schweiz) Method and device for producing a blank for a radial radial tire
DE2807489A1 (en) * 1978-02-22 1979-08-23 Bayer Ag EXTRUSION TIRES AND THE PROCESS FOR THEIR MANUFACTURING

Also Published As

Publication number Publication date
DE2018930A1 (en) 1970-11-05
AU1399770A (en) 1971-10-21
FR2045400A5 (en) 1971-02-26
NL7005556A (en) 1970-10-21
BE749142A (en) 1970-10-01

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed