GB579419A - Improvements in or relating to the production of tapered polyamide filaments - Google Patents
Improvements in or relating to the production of tapered polyamide filamentsInfo
- Publication number
- GB579419A GB579419A GB781043A GB781043A GB579419A GB 579419 A GB579419 A GB 579419A GB 781043 A GB781043 A GB 781043A GB 781043 A GB781043 A GB 781043A GB 579419 A GB579419 A GB 579419A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filaments
- drawn
- filament
- baking
- tapered
- 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
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/12—Aldehydes; Ketones
- D06M13/127—Mono-aldehydes, e.g. formaldehyde; Monoketones
-
- 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
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/20—Formation of filaments, threads, or the like with varying denier along their length
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
Tapered synthetic linear polyamide filaments are prepared by drawing a substantially uniform undrawn filament in such a manner that the drawing tension is varied in a controlled cycle between an upper and lower value, treating the variably drawn filament with an aqueous 20 per cent solution of formaldehyde containing acid catalysts and having a pH less than 3.0, and baking at a temperature between 100 DEG C. and 150 DEG C. The drawn filaments may be cut either before or after the soaking and baking treatment to produce tapered filaments suitable for use as fishing leaders and for the manufacture of paint brushes. The acid catalysts are acids with ionisation constants of not less than 1.0 x 102 at 25 DEG C. or water-soluble ammonium, amine or metallic salts of such acids, such as sulphuric, hydrochloric, sulphamic, sulphanilic, sodium hydrogen sulphate, ammonium sulphate, chloride, nitrate, sulphite, bisulphite, thiosulphate, or sulphamate, potassium iodide, potassium chloride mixed with boric acid, calcium chloride, hydroxylamine hydrochloride, aniline hydrochloride, aluminium sulphate and aluminium sulphate mixed with potassium chloride. The proportion of catalyst employed is preferably from 0.5 to 5 per cent of the weight of formaldehyde solution. The polyamide filament is preferably quenched in cold water as it is extruded as described in Specification 501,197. The tapering effect may be produced by displacing the filament vertically by a reciprocating pulley as it passes between two horizontally arranged draw points, or it may be drawn between two draw points, one of which is rotated at constant speed, while the other is driven at variable speed by elliptical gears, as in Specification 535,263, or it may be drawn from a roller having a slotted periphery by a roller rotating at higher speed as in Specification 554,203. The excess of formaldehyde solution adhering to the surface of the filaments is preferably removed and the filaments may be dried at 30-40 DEG C. prior to baking. Specifications 461,236, 461,237, 534,698 and 565,066 also are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB781043A GB579419A (en) | 1943-05-17 | 1943-05-17 | Improvements in or relating to the production of tapered polyamide filaments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB781043A GB579419A (en) | 1943-05-17 | 1943-05-17 | Improvements in or relating to the production of tapered polyamide filaments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB579419A true GB579419A (en) | 1946-08-02 |
Family
ID=9840176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB781043A Expired GB579419A (en) | 1943-05-17 | 1943-05-17 | Improvements in or relating to the production of tapered polyamide filaments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB579419A (en) |
-
1943
- 1943-05-17 GB GB781043A patent/GB579419A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB274521A (en) | Manufacture of artificial materials from viscose | |
| DE1074818B (en) | ||
| GB663032A (en) | Improvements in or relating to collagen threads, filaments and the like and the manufacture thereof | |
| GB339089A (en) | Process for making artificial threads, hairs, bands or the like from solutions of silk fibroin | |
| GB579419A (en) | Improvements in or relating to the production of tapered polyamide filaments | |
| GB443971A (en) | Process for spinning viscose | |
| GB524090A (en) | Manufacture of artificial fibres from protein material | |
| US2439039A (en) | Process of producing medullated artificial filaments | |
| US3560141A (en) | Aldehyde,alum and dihydroxybenzoic acid tanned collagen articles production | |
| US2552079A (en) | Production of zein fibers | |
| GB511160A (en) | Improvements in or relating to the manufacture of artificial textile fibres | |
| US2078339A (en) | Manufacture of artificial silk | |
| US2404665A (en) | Methods of hardening and tanning of artificial fibers made of protein | |
| GB512640A (en) | Improved process for hardening casein fibres | |
| GB774818A (en) | Method of wet-spinning artificial fibres of polyvinyl alcohol | |
| SU193018A1 (en) | Method of producing polyvinyl alcohol fibers | |
| GB239254A (en) | Improvements in the manufacture of artificial silk and the like from viscose solutions | |
| GB728237A (en) | Improvements relating to the treatment of textile materials with a colloidal solution of silica | |
| US2421391A (en) | Process for denitrating nitrocellulose articles | |
| GB645390A (en) | Improvements in and relating to the production of artificial protein threads, filaments and the like | |
| US2864663A (en) | Process for the production of vegetable protein fibers | |
| US2509549A (en) | Process of producing highly extensible regenerated cellulose yarn | |
| SU69944A1 (en) | Glass fiber oiling method | |
| GB525738A (en) | Improvements in or relating to the manufacture of artificial threads strips or bandsfrom protein solutions | |
| GB570205A (en) | Improvements in the manufacture and production of artificial filaments, threads and the like |