GB573525A - Improvements in or relating to the production of gas expanded rubber materials - Google Patents
Improvements in or relating to the production of gas expanded rubber materialsInfo
- Publication number
- GB573525A GB573525A GB329040A GB329040A GB573525A GB 573525 A GB573525 A GB 573525A GB 329040 A GB329040 A GB 329040A GB 329040 A GB329040 A GB 329040A GB 573525 A GB573525 A GB 573525A
- Authority
- GB
- United Kingdom
- Prior art keywords
- expanded rubber
- gas
- relating
- production
- rubber materials
- 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
- B29C44/34—Auxiliary operations
- B29C44/3442—Mixing, kneading or conveying the foamable material
- B29C44/3446—Feeding the blowing agent
-
- 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
- B29C44/3488—Vulcanizing the material before 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
In making gas-expanded rubber material using ultra fast or semi-ultra fast accelerators, the mixing of the composition takes place in the absence of either the sulphur, or the accelerator and the missing ingredient is added just prior to calendering or, where a moulded article is to be produced, just prior to the moulding stage. After calendering or moulding the mass is allowed to become sufficiently vulcanized to retain the gas when impregnated therewith. The gassing may be produced by adding gas producing materials such as an acid or a carbonate. The process may be carried out in two or three stages as described in Specifications 358,967 and 506,077.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB329040A GB573525A (en) | 1940-02-21 | 1940-02-21 | Improvements in or relating to the production of gas expanded rubber materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB329040A GB573525A (en) | 1940-02-21 | 1940-02-21 | Improvements in or relating to the production of gas expanded rubber materials |
Publications (1)
Publication Number | Publication Date |
---|---|
GB573525A true GB573525A (en) | 1945-11-26 |
Family
ID=9755523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB329040A Expired GB573525A (en) | 1940-02-21 | 1940-02-21 | Improvements in or relating to the production of gas expanded rubber materials |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB573525A (en) |
-
1940
- 1940-02-21 GB GB329040A patent/GB573525A/en not_active Expired
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