GB649039A - Improvements in or relating to method of and apparatus for making cellular rubber articles - Google Patents

Improvements in or relating to method of and apparatus for making cellular rubber articles

Info

Publication number
GB649039A
GB649039A GB33272/47A GB3327247A GB649039A GB 649039 A GB649039 A GB 649039A GB 33272/47 A GB33272/47 A GB 33272/47A GB 3327247 A GB3327247 A GB 3327247A GB 649039 A GB649039 A GB 649039A
Authority
GB
United Kingdom
Prior art keywords
rubber
added
zinc
dithiocarbamate
approximately
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
GB33272/47A
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.)
Bridgestone Firestone Inc
Original Assignee
Firestone Tire and Rubber Co
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 Firestone Tire and Rubber Co filed Critical Firestone Tire and Rubber Co
Publication of GB649039A publication Critical patent/GB649039A/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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/12—Dielectric heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0058—Liquid or visquous
    • B29K2105/0061—Gel or sol
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Cellular rubber articles are made by frothing an aqueous dispersion of a vulcanizable rubber, gelling the froth in the desired shape, subjecting the wet gelled froth to a high-frequency electrical field to vulcanize the rubber, and thereafter drying the article. In an example, an aqueous dispersion of sulphur and zinc diethyl-dithiocarbamate was added to a concentrated natural latex and then zinc mercaptobenzthiazole added to form a master batch. Part of this master batch was stirred and the following ingredients added in the order named:-piperidinium pentamethylene-dithiocarbamate, potassium salt of castor oil, potassium oleate, zinc oxide, and sodium silicofluoride, after beating, the mix was poured into moulds and vulcanized at approximately 212 DEG F. by high-frequency heating, as described (see Group XI). When neoprene latex is used, the foamed mass is heated to approximately 300 DEG F. Other synthetic rubbers which may be used are copolymers of butadiene with styrene or acrylonitrile, polybutadiene and butyl rubber.
GB33272/47A 1947-05-02 1947-12-17 Improvements in or relating to method of and apparatus for making cellular rubber articles Expired GB649039A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US649039XA 1947-05-02 1947-05-02

Publications (1)

Publication Number Publication Date
GB649039A true GB649039A (en) 1951-01-17

Family

ID=22058999

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33272/47A Expired GB649039A (en) 1947-05-02 1947-12-17 Improvements in or relating to method of and apparatus for making cellular rubber articles

Country Status (1)

Country Link
GB (1) GB649039A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1508420A2 (en) * 2003-08-21 2005-02-23 Dames-Willers GmbH Method for vulcanising of latex foam and apparatus therefore
CN103552245A (en) * 2013-11-13 2014-02-05 宁波市鄞州科启动漫工业技术有限公司 Method for forming honeycomb rubber product
CN116925417A (en) * 2023-07-24 2023-10-24 佛山市爱思达略家具有限公司 Production process of negative ion sponge

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1508420A2 (en) * 2003-08-21 2005-02-23 Dames-Willers GmbH Method for vulcanising of latex foam and apparatus therefore
EP1508420A3 (en) * 2003-08-21 2005-12-07 Dames-Willers GmbH Method for vulcanising of latex foam and apparatus therefore
CN103552245A (en) * 2013-11-13 2014-02-05 宁波市鄞州科启动漫工业技术有限公司 Method for forming honeycomb rubber product
CN116925417A (en) * 2023-07-24 2023-10-24 佛山市爱思达略家具有限公司 Production process of negative ion sponge

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