GB906086A - Flexible ducting - Google Patents
Flexible ductingInfo
- Publication number
- GB906086A GB906086A GB382160A GB382160A GB906086A GB 906086 A GB906086 A GB 906086A GB 382160 A GB382160 A GB 382160A GB 382160 A GB382160 A GB 382160A GB 906086 A GB906086 A GB 906086A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mandrel
- strip
- silica
- curing
- flexible ducting
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/224—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length having a profiled section, e.g. tubes, rods
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
906,086. Making flexible ducting. IMPERIAL CHEMICAL INDUSTRIES Ltd. Jan. 18, 1961 [Feb. 3, 1960], No. 3821/60. Class 99(2). Flexible ducting is made by feeding an organopolysiloxane gum composition in strip or ribbon form into a nip formed between a rotating mandrel and an idler roll until the desired thickness of the composition is obtained and thereafter heat curing to an elastomer. One or more reinforcing fabric layers in sheet, strip or tube form e.g. knitted, woven or felted fabric of metal, glass cloth, cotton, polyethylene terephthalate or a synthetic polymer, may be included. Sheet or strip reinforcement may be firstly wrapped round the mandrel and coated with an adhesive or applied over an organopolysiloxane layer or in tube form it is placed on the mandrel and, if necessary, coated with an adhesive. The mandrel may be first wetted with a wetting agent such as ethylene oxide, with alkyl phenols, fatty acids, resin acids or sorbitan monostearate. Curing under heat and pressure may be carried out after applying a tape such as of polyethylene terephthalate followed by a shrinkage tape, e.g. wet cotton, in live steam or air at 120‹-150‹C for ¢ to 1¢ hours. After removal of the mandrel and the wrappings an after-cure at 200‹ to 250‹C for 24 hours may be given. The organopolysiloxane gum may have a methyl, phenyl or vinyl organo group or two or more different groups. Fillers may be fume silica, precipitated silica, silica aerosols, diatomaceous earths, titanium dioxide or zirconium silicate which may be treated before use to modify surface characteristics e.g. by a polysiloxane. Plasticizers may be diphenylsilanediol or (tetramethylethylenedioxy) dimethylsilone. Curing agents may be an organic peroxide such as benzoyl, chlorobenzoyl or dicumyl peroxide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB382160A GB906086A (en) | 1960-02-03 | 1960-02-03 | Flexible ducting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB382160A GB906086A (en) | 1960-02-03 | 1960-02-03 | Flexible ducting |
Publications (1)
Publication Number | Publication Date |
---|---|
GB906086A true GB906086A (en) | 1962-09-19 |
Family
ID=9765560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB382160A Expired GB906086A (en) | 1960-02-03 | 1960-02-03 | Flexible ducting |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB906086A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2199629A (en) * | 1986-12-30 | 1988-07-13 | Dunlop Ltd | Kink resistant hose |
GB2441867B (en) * | 2006-09-15 | 2011-09-14 | Walker & Co James Ltd | Submergible motor protector bag |
-
1960
- 1960-02-03 GB GB382160A patent/GB906086A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2199629A (en) * | 1986-12-30 | 1988-07-13 | Dunlop Ltd | Kink resistant hose |
GB2441867B (en) * | 2006-09-15 | 2011-09-14 | Walker & Co James Ltd | Submergible motor protector bag |
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