GB624987A - Improvements in and relating to the manufacture of alginate threads - Google Patents
Improvements in and relating to the manufacture of alginate threadsInfo
- Publication number
- GB624987A GB624987A GB1958147A GB1958147A GB624987A GB 624987 A GB624987 A GB 624987A GB 1958147 A GB1958147 A GB 1958147A GB 1958147 A GB1958147 A GB 1958147A GB 624987 A GB624987 A GB 624987A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thread
- washing
- weight
- parts
- less
- 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
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/04—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of alginates
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
Abstract
A continuous spinning process for the production of alginate threads comprises projecting an aqueous alkali alginate solution having a pH of less than 9.5 into a neutral bath made up from an alkaline earth metal salt and water substantially free from temporary hardness, passing the thread thus formed to a series of thread-advancing devices for subsequent treatment, including washing and drying, and, prior to drying, treating the thread with a cation-active compound. The neutral bath is defined as one of pH range of the order of 5 to 8.5. It should contain no mineral or organic acid other than the very small quantity of carbon dioxide normally dissolved in aqueous solutions, and no carbonates or hydroxides other than a small quantity of dissolved calcium carbonate not exceeding 5 parts per 100,000 by weight. The washing of the formed thread is preferably carried out with demineralised water, i.e. water containing less than 8 parts of total solids and less than 1 part of calcium salts per 100,000 parts by weight. The cation-active compound, e.g. cetyl pyridinium bromide may be added to the spinning solution or the washing bath, but is preferably applied after the washing, e.g. by passing the thread over a wick on to which a solution of the compound is dropped so that the thread takes up about 2 per cent of the compound based on the weight of the dried thread. The thread-advancing devices may be of the kind in which the thread is advanced axially along the device while travelling helically. Specifications 319,793, [Class 120 (iii)], 385,477, 475,023, 567,641, 568,177, 571,657 and 605,826 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1958147A GB624987A (en) | 1947-07-22 | 1947-07-22 | Improvements in and relating to the manufacture of alginate threads |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1958147A GB624987A (en) | 1947-07-22 | 1947-07-22 | Improvements in and relating to the manufacture of alginate threads |
Publications (1)
Publication Number | Publication Date |
---|---|
GB624987A true GB624987A (en) | 1949-06-20 |
Family
ID=10131765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1958147A Expired GB624987A (en) | 1947-07-22 | 1947-07-22 | Improvements in and relating to the manufacture of alginate threads |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB624987A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4562110A (en) * | 1981-08-18 | 1985-12-31 | Tong David Philip | Process for the production of alginate fibre material and products made therefrom |
WO1996014453A1 (en) * | 1994-11-02 | 1996-05-17 | E.R. Squibb & Sons Inc. | Alginate ropes, method of preparation and use |
US7452374B2 (en) | 2003-04-24 | 2008-11-18 | Maquet Cardiovascular, Llc | AV grafts with rapid post-operative self-sealing capabilities |
-
1947
- 1947-07-22 GB GB1958147A patent/GB624987A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4562110A (en) * | 1981-08-18 | 1985-12-31 | Tong David Philip | Process for the production of alginate fibre material and products made therefrom |
WO1996014453A1 (en) * | 1994-11-02 | 1996-05-17 | E.R. Squibb & Sons Inc. | Alginate ropes, method of preparation and use |
US7452374B2 (en) | 2003-04-24 | 2008-11-18 | Maquet Cardiovascular, Llc | AV grafts with rapid post-operative self-sealing capabilities |
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