GB737485A - Improvements in or relating to method of making cellular rubber - Google Patents
Improvements in or relating to method of making cellular rubberInfo
- Publication number
- GB737485A GB737485A GB32744/52A GB3274452A GB737485A GB 737485 A GB737485 A GB 737485A GB 32744/52 A GB32744/52 A GB 32744/52A GB 3274452 A GB3274452 A GB 3274452A GB 737485 A GB737485 A GB 737485A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rubber
- mould
- gas
- expand
- mix
- 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
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/08—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles using several expanding or moulding steps
-
- 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
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
- B29C44/586—Moulds with a cavity increasing in size during foaming
-
- 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
737,485. Moulding cellular rubber. RUBATEX PRODUCTS, Inc. Dec. 24, 1952 [April 3, 1952], No. 32744/52. Classes 70 and 87 (2). A method of producing a vulcanized closed cell cellular expanded rubber article comprises putting into a mould which is expansible in one dimension only, a mix of rubber, a substance which generates a gas on the application of heat, and a vulcanizing agent, subjecting the mix to a temperature sufficient to generate said gas and to cure the rubber, effecting a partial cure of the rubber, permitting the generated gas to expand the mould to a limited extent in said one dimension and to expand said partially cured rubber, and then fully curing said expanded rubber. An expanding mould is preferably used which comprises a substantially rectangular container 10 which is mounted between press platens 11 and 12, the interior mould wall being provided with grooves 13 for the application of a heat resistant grease. The mould is also provided with an inverted pan 15 having sloping sides 16 and a lip 17 which is a close fit in the mould wall. Pressure is limited to about 50 pounds per square inch. Blowing may be effected by the use of a mixture of sodium nitrate and ammonium acetate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US737485XA | 1952-04-03 | 1952-04-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB737485A true GB737485A (en) | 1955-09-28 |
Family
ID=22115577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32744/52A Expired GB737485A (en) | 1952-04-03 | 1952-12-24 | Improvements in or relating to method of making cellular rubber |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB737485A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010074727A2 (en) | 2008-12-22 | 2010-07-01 | The Gates Corporation | Method of making composite article with expandable elastomer in compression |
-
1952
- 1952-12-24 GB GB32744/52A patent/GB737485A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010074727A2 (en) | 2008-12-22 | 2010-07-01 | The Gates Corporation | Method of making composite article with expandable elastomer in compression |
| US8246872B2 (en) | 2008-12-22 | 2012-08-21 | The Gates Corporation | Method for making composite article with expandable elastomer in compression |
| US9731438B2 (en) | 2008-12-22 | 2017-08-15 | Gates Corporation | Composite article with expandable elastomer in compression |
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