GB744165A - Improvements in or relating to vulcanised closed cell cellular expanded rubbery articles - Google Patents

Improvements in or relating to vulcanised closed cell cellular expanded rubbery articles

Info

Publication number
GB744165A
GB744165A GB25836/52A GB2583652A GB744165A GB 744165 A GB744165 A GB 744165A GB 25836/52 A GB25836/52 A GB 25836/52A GB 2583652 A GB2583652 A GB 2583652A GB 744165 A GB744165 A GB 744165A
Authority
GB
United Kingdom
Prior art keywords
mould
expanded
mix
bars
platens
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
GB25836/52A
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.)
Rubatex Products Inc
Original Assignee
Rubatex Products 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 Rubatex Products Inc filed Critical Rubatex Products Inc
Publication of GB744165A publication Critical patent/GB744165A/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
    • B29D35/00—Producing footwear
    • B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
    • B29D35/122—Soles
    • 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
    • B29D35/00—Producing footwear
    • B29D35/0054—Producing footwear by compression moulding, vulcanising or the like; Apparatus therefor
    • B29D35/0063—Moulds

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

744,165. Making sheets of cellular expanded rubber. RUBATEX PRODUCTS, Inc. Oct. 15, 1952 [Aug. 30, 1952], No. 25836/52. Classes 70 and 87 (2). A mix of vulcanizable rubbery material, vulcanizing agents and a finely-dispersed substance which on heating generates a gas is put into a mould expandable in one dimension only; the mix is heated to a temperature sufficient to generate said gas and to partly or fully cure the material; the internally-generated gas is permitted to expand the mould and the material to a limited extent in said one dimension; and the expanded material is cooled or allowed to cool whilst it is confined against further expansion. The drawings show a rectangular mould coinprising two recessed aluminium plates 10, 11 into which the rubbery mix is filled. Figs. 3 and 4 show the mould before the mix has been expanded and Fig. 3a after it has been expanded. The longer sides of the mould plates have projecting ledges 26, 27 which lie between U-shaped clamping bars 30 forming two sides of the frame shown in Fig. 6. The other two sides of the frame are constituted by bars 40, 41. To hold the filled mould closed temporarily before it is placed between heated ram-operated platens P, locks 43 are mounted on bars 40, 41 and engage recesses 45 in the mould ends. When the mould has been positioned between the platens the locks are released, the mould is heated, the ram pressure on the platens is released and the mould halves are allowed to expand from the Fig. 3 position to the Fig. 3a position to a limit determined by the bars 30. At least partial curing is effected before the ram pressure is released; if the cure is incomplete before this release it is completed after expansion but before cooling. The mould is removed from the press, cooled in air or water and opened. Shoe soles may thus be made. Side plates 20 prevent escape.of material from the expanded mould. Specification 737,485 is referred to.
GB25836/52A 1952-08-30 1952-10-15 Improvements in or relating to vulcanised closed cell cellular expanded rubbery articles Expired GB744165A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US744165XA 1952-08-30 1952-08-30

Publications (1)

Publication Number Publication Date
GB744165A true GB744165A (en) 1956-02-01

Family

ID=22119447

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25836/52A Expired GB744165A (en) 1952-08-30 1952-10-15 Improvements in or relating to vulcanised closed cell cellular expanded rubbery articles

Country Status (1)

Country Link
GB (1) GB744165A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007209A (en) * 1958-05-12 1961-11-07 United Shoe Machinery Corp Methods of vulcanizing outsoles onto shoe bottoms
US3091811A (en) * 1958-11-24 1963-06-04 Hollandsche Draad En Kabelfab Apparatus and methods for molding a foaming material
US3178490A (en) * 1961-10-06 1965-04-13 Thiokol Chemical Corp Process for producing a foamed plastic article having a dense skin
US3398217A (en) * 1961-10-30 1968-08-20 Robertshaw Controls Co Method for manufacturing a program member for a reading head
US3818085A (en) * 1971-09-21 1974-06-18 Uniroyal Inc Press method of making expanded thermoplastic sheet
US4014967A (en) * 1974-01-28 1977-03-29 Osterreichische Heraklith Aktiengesellschaft Method and mold for the discontinuous production of foam plastic parts
US4725036A (en) * 1986-02-03 1988-02-16 Brandon Lee P Snow molding apparatus
EP0513449B1 (en) * 1991-05-14 1997-08-13 Duskin Company Limited Method of forming a floor mat

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007209A (en) * 1958-05-12 1961-11-07 United Shoe Machinery Corp Methods of vulcanizing outsoles onto shoe bottoms
US3091811A (en) * 1958-11-24 1963-06-04 Hollandsche Draad En Kabelfab Apparatus and methods for molding a foaming material
US3178490A (en) * 1961-10-06 1965-04-13 Thiokol Chemical Corp Process for producing a foamed plastic article having a dense skin
US3398217A (en) * 1961-10-30 1968-08-20 Robertshaw Controls Co Method for manufacturing a program member for a reading head
US3818085A (en) * 1971-09-21 1974-06-18 Uniroyal Inc Press method of making expanded thermoplastic sheet
US4014967A (en) * 1974-01-28 1977-03-29 Osterreichische Heraklith Aktiengesellschaft Method and mold for the discontinuous production of foam plastic parts
US4725036A (en) * 1986-02-03 1988-02-16 Brandon Lee P Snow molding apparatus
EP0513449B1 (en) * 1991-05-14 1997-08-13 Duskin Company Limited Method of forming a floor mat

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