GB699415A - Improvements in or relating to the production of microporous rubber sheeting - Google Patents

Improvements in or relating to the production of microporous rubber sheeting

Info

Publication number
GB699415A
GB699415A GB2801750A GB2801750A GB699415A GB 699415 A GB699415 A GB 699415A GB 2801750 A GB2801750 A GB 2801750A GB 2801750 A GB2801750 A GB 2801750A GB 699415 A GB699415 A GB 699415A
Authority
GB
United Kingdom
Prior art keywords
rubber
sheet
microporous
parts
gelling
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
GB2801750A
Inventor
Evelyn William Madge
Frank Theodore Purkis
Albert Nelson Ward
Leslie Norman Wesley
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 GB2801750A priority Critical patent/GB699415A/en
Priority to ES0200487A priority patent/ES200487A1/en
Publication of GB699415A publication Critical patent/GB699415A/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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/28—Expanding the moulding material on continuous moving surfaces without restricting the upwards growth of the foam
    • 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

  • Moulding By Coating Moulds (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Cell Separators (AREA)

Abstract

699,415. Microporous rubber sheeting. DUNLOP RUBBER CO., Ltd. Oct 29, 1951 [Nov. 16, 1950], No. 28017/50. Classes 70 and 87 (ii). Microporous rubber sheeting is produced by casting a heat vulcanizable unfoamed rubber latex composition containing a gelling agent into the form of a sheet with solid ribs, gelling the sheet under conditions which prevent escape of water, permitting access of a fluid heating medium to the surface, and vulcanizing the gelled sheet by contact with a fluid heating medium under conditions preventing escape of water therefrom. In a preferred embodiment for the manufacture of microporous hard rubber battery separators a latex mix containing 30 to 40 parts of sulphur and 2 to 3 parts of calcium formate to every 100 parts of rubber is added from a jacketed tank 11 (Fig.l) onto a grooved belt 1 of rubber covered fabric which had pieviously been treated with an aqueous solution of coagulant such as aluminium sulphate. from tank 9. The latex layer is carried under spreader 12 and through gelling chamber 14 which is filled with saturated steam after which the sheet may be sprayed with water from means 26. The gelled sheet 28 after passing roll 3 is delivered onto preshrunk porous fabric 17 and the two together wound onto a stock reel 18, which is then vulcanized in an autoclave by steam at 40-80 lbs. pressure. For separators, the sheets may be 0.03 to 0.05 inches in thickness. Specification 698,613 is referred to.
GB2801750A 1950-11-16 1950-11-16 Improvements in or relating to the production of microporous rubber sheeting Expired GB699415A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2801750A GB699415A (en) 1950-11-16 1950-11-16 Improvements in or relating to the production of microporous rubber sheeting
ES0200487A ES200487A1 (en) 1950-11-16 1951-11-15 Improvements in or relating to the production of microporous rubber sheeting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2801750A GB699415A (en) 1950-11-16 1950-11-16 Improvements in or relating to the production of microporous rubber sheeting

Publications (1)

Publication Number Publication Date
GB699415A true GB699415A (en) 1953-11-04

Family

ID=10268929

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2801750A Expired GB699415A (en) 1950-11-16 1950-11-16 Improvements in or relating to the production of microporous rubber sheeting

Country Status (2)

Country Link
ES (1) ES200487A1 (en)
GB (1) GB699415A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112192872A (en) * 2020-09-21 2021-01-08 福建省华昂体育用品有限公司 Anti-overflow look's vulcanized shoe foxing apparatus for producing

Also Published As

Publication number Publication date
ES200487A1 (en) 1952-03-01

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