GB1019099A - Improvements in or relating to the melt-spinning of polyamides - Google Patents
Improvements in or relating to the melt-spinning of polyamidesInfo
- Publication number
- GB1019099A GB1019099A GB100126/64A GB1012664A GB1019099A GB 1019099 A GB1019099 A GB 1019099A GB 100126/64 A GB100126/64 A GB 100126/64A GB 1012664 A GB1012664 A GB 1012664A GB 1019099 A GB1019099 A GB 1019099A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chips
- cooled
- melt
- inert gas
- spinning
- 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
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/10—Filtering or de-aerating the spinning solution or melt
- D01D1/103—De-aerating
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/04—Melting filament-forming substances
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
-
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Finishing Walls (AREA)
Abstract
1,019,099. Melt-spinning polyamides. SNIA VISCOSA SOC. NATURALE INDUSTRIA APPLICAZIONI VISCOSA S.p.A. March 10, 1964 [March 15, 1963], No. 10026/64. Heading B5B. In melt-spinning polyamides, the polymer chips, after having been dried, by heating in vacuo, are artificially cooled, or allowed to cool spontaneously, in an atmosphere of inert gas to a temperature not exceeding 50‹ C., and preferably between 25‹ and 30‹ C., before being transferred to the feed hopper of the melt-spinning apparatus, preferably while still surrounded by an atmosphere of the inert gas. The chips may be artificially cooled or allowed to cool spontaneously in the apparatus in which they have been dried in vacuo, a dry inert gas such as dry nitrogen having been introduced into the drying chamber until the interior of the latter is at atmospheric pressure and cold water being circulated through the jacket of the drying chamber (which may be rotated to tumble the chips) until they have been cooled to the desired temperature. Alternatively the chips may be cooled, while they are being mechanically conveyed from the drier to the melt-spinning apparatus, by contacting them with a stream of a cooled dry inert gas such as dry nitrogen. In either case the initial humidity of the inert gas may be so controlled so that it does not exceed a predetermined level, such as 70 milligrams of moisture per cubic metre of gas. In a third method the hot dry chips are discharged from the drying chamber on to a hollow horizontal metallic plate through the interior of which flows a stream of cold water. The plate is enclosed in a chamber through which flows a stream of dry nitrogen and the polymer chips are caused to travel along the entire length of the plate by vibrating the plate. The cooled chips are discharged into a duct through which they are pneumatically conveyed to the melting apparatus by a current of dry nitrogen.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT540263 | 1963-03-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1019099A true GB1019099A (en) | 1966-02-02 |
Family
ID=11120207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB100126/64A Expired GB1019099A (en) | 1963-03-15 | 1964-03-10 | Improvements in or relating to the melt-spinning of polyamides |
Country Status (7)
Country | Link |
---|---|
US (1) | US3345445A (en) |
BE (1) | BE645212A (en) |
DE (1) | DE1435677B1 (en) |
GB (1) | GB1019099A (en) |
NL (2) | NL6402668A (en) |
NO (1) | NO122604B (en) |
SE (1) | SE301690B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4470880A (en) * | 1982-06-18 | 1984-09-11 | Allied Corporation | Method for separating a liquid waste finish composition |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1035107A (en) * | 1974-04-09 | 1978-07-25 | United States Gypsum Company | Method and apparatus for extruding thermoplastic polymers |
US5279783A (en) * | 1992-01-30 | 1994-01-18 | United States Surgical Corporation | Process for manufacture of polyamide monofilament suture |
CA2088458A1 (en) * | 1992-01-30 | 1993-07-31 | Cheng-Kung Liu | Polyamide monofilament suture manufactured from higher order polyamide |
US5458838A (en) * | 1992-03-11 | 1995-10-17 | Kabushiki Kaisha Kobe Seiko Sho | Heating and extruding method for bulk preform |
CN109023548B (en) * | 2018-08-21 | 2020-04-14 | 江苏鸿顺合纤科技有限公司 | Chemical fiber spinning drying process |
CN108842197B (en) * | 2018-08-21 | 2020-03-27 | 深圳市友邦工程塑料有限公司 | Polyamide fiber production process |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE461923A (en) * | 1940-08-02 | 1900-01-01 | ||
DE834420C (en) * | 1942-10-21 | 1952-03-20 | Glanzstoff Ag | Method and device for spinning meltable plastics |
GB839210A (en) * | 1957-05-07 | 1960-06-29 | British Celanese | Improvements in or relating to spinning |
BE584615A (en) * | 1958-11-14 | 1900-01-01 | ||
US3040005A (en) * | 1959-01-21 | 1962-06-19 | Du Pont | Process for increasing the molecular weight of polyamides |
US3036335A (en) * | 1959-06-11 | 1962-05-29 | Nat Rubber Machinery Co | Apparatus and method for extruding thermoplastic material |
-
0
- NL NL129742D patent/NL129742C/xx active
-
1964
- 1964-03-10 GB GB100126/64A patent/GB1019099A/en not_active Expired
- 1964-03-12 DE DE19641435677 patent/DE1435677B1/en active Pending
- 1964-03-13 SE SE3197/64A patent/SE301690B/xx unknown
- 1964-03-13 BE BE645212D patent/BE645212A/xx unknown
- 1964-03-13 NL NL6402668A patent/NL6402668A/xx unknown
- 1964-03-14 NO NO152435A patent/NO122604B/no unknown
- 1964-03-16 US US352394A patent/US3345445A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4470880A (en) * | 1982-06-18 | 1984-09-11 | Allied Corporation | Method for separating a liquid waste finish composition |
Also Published As
Publication number | Publication date |
---|---|
SE301690B (en) | 1968-06-17 |
DE1435677B1 (en) | 1973-02-15 |
NL129742C (en) | |
BE645212A (en) | 1964-09-14 |
US3345445A (en) | 1967-10-03 |
NO122604B (en) | 1971-07-19 |
NL6402668A (en) | 1964-09-16 |
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