GB719400A - Manufacture of microporous moulded rubber articles - Google Patents
Manufacture of microporous moulded rubber articlesInfo
- Publication number
- GB719400A GB719400A GB21052A GB21052A GB719400A GB 719400 A GB719400 A GB 719400A GB 21052 A GB21052 A GB 21052A GB 21052 A GB21052 A GB 21052A GB 719400 A GB719400 A GB 719400A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rubber
- strip
- plastic mass
- clay
- 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
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
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Moulded microporous rubber articles are produced by spreading a rubber latex composition containing gelling and vulcanising agents on to a shaped plastic mass comprising a moist finely divided inert water-insoluble solid, gelling the spread composition, vulcanising the rubber while it is supported by the shaped plastic mass under conditions preventing evaporation of water from the composition, and subsequently separating the vulcanised article from the moulded plastic mass. In the manufacture of battery separators the plastic mass which may be a stiff colloidal clay, or a paste-like mixture of water and chalk or whiting is extruded in the form of channelled strip, alternatively depressions may be stamped on it by a press. The strip is then treated with a coagulant such as aqueous aluminium sulphate or calcium sulphate or formic acid and is then spread with compounded latex. The clay strip is then carried to a gelling chamber and the latex gelled and then covered with a strip of fabric and wound on to a flanged drum and the whole treated at 170 DEG C. in an autoclave to vulcanise the rubber. The clay is then washed off, and the rubber sheet flattened by gentle heating and then cut to size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB21052A GB719400A (en) | 1952-01-03 | 1952-01-03 | Manufacture of microporous moulded rubber articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB21052A GB719400A (en) | 1952-01-03 | 1952-01-03 | Manufacture of microporous moulded rubber articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB719400A true GB719400A (en) | 1954-12-01 |
Family
ID=9700343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21052A Expired GB719400A (en) | 1952-01-03 | 1952-01-03 | Manufacture of microporous moulded rubber articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB719400A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6242127B1 (en) | 1999-08-06 | 2001-06-05 | Microporous Products, L.P. | Polyethylene separator for energy storage cell |
| US6458491B1 (en) | 2000-09-15 | 2002-10-01 | Microporous Products, Lp | Separator for energy storage cells |
-
1952
- 1952-01-03 GB GB21052A patent/GB719400A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6242127B1 (en) | 1999-08-06 | 2001-06-05 | Microporous Products, L.P. | Polyethylene separator for energy storage cell |
| US6458491B1 (en) | 2000-09-15 | 2002-10-01 | Microporous Products, Lp | Separator for energy storage cells |
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