PL524B1 - A method of producing shiny silk with the thinnest viscose threads. - Google Patents

A method of producing shiny silk with the thinnest viscose threads. Download PDF

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Publication number
PL524B1
PL524B1 PL524A PL52420A PL524B1 PL 524 B1 PL524 B1 PL 524B1 PL 524 A PL524 A PL 524A PL 52420 A PL52420 A PL 52420A PL 524 B1 PL524 B1 PL 524B1
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PL
Poland
Prior art keywords
silk
viscose
threads
thinnest
shiny
Prior art date
Application number
PL524A
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Polish (pl)
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Publication date
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Publication of PL524B1 publication Critical patent/PL524B1/en

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Celem wytwarzania jedwabiu z wiskozy o najcienszych niteczkach proponowano, aby wiskoze, doprowadzana regularnie do dyszy w dokladnie odmierzonych ilo¬ sciach, wtlaczali do kapieli, która przez swa dostateczna biernosc, np. niska tem¬ perature i polaczona z tern mala dysocja- cje zapoczatkowuje wprawdzie rozklada¬ nie sie, ale ja tak wolno uskutecznia, iz sta-' je sie rzecza mozliwa przez szybkie proste wyciaganie wiadomym sposobem rozcia¬ gnac gruba z poczatku nitke do bardzo cienkiego wymiaru.Podczas gdy przy systemie przedzenia wyciagowego dla jedwabiu miedzikowego uzywano mozliwie slabych kapieli straca¬ jacych, a nawet czystej wody, aby umozli¬ wic powolne wyciaganie, i musiano spu¬ szczac wydobyte przytem bardzo slabe ni¬ teczki przez wiszaca warstwe cieczy, albo kazac je nosic innej cieczy posuwajacej, a potem dopiero wyciagnieta nitke zupel¬ nie rozlozyc i uwolnic od miedzi — udalo sie systemem wyzej wzmiankowanym wy¬ twarzac bardzo cienkie niteczki odmien¬ nym sposobem.Okazalo sie bowiem, ze stosunkowo kwasne kapiele solne nadaja sie znakomi¬ cie w zwyczajnej temperaturze, aby ze zwyklych, dla sztucznego jedwabiu uzy¬ wanych dysz, wyciagac bezposrednio tak cienkie nitki, jak sie to dzieje przy sposo¬ bie przedzenia wyciagowego jedwabiu miedzikowego.Jako przyklad podano nasycona kapiel dwusiarczanu sodu o zawartosci okolo 20^ kwasu, a zatem okolo 280 g kwasu siar¬ kowego na litr.Operujac przy 25°C, osiagnieto przy sta¬ lem doprowadzaniu, odpowiedniej do szybkosci wyciagania i do kazdego otwo¬ ru wyciekowego, ilosci wiskozy, niteczkiaz do 2 denierów. Polysk jedwabiu w ten sposób otrzymanego byl podobnym do znanego jedwabiu miedzikowego, wedlug systemu przedzenia wyciagowego, to zna¬ czy, iz jedwab posiadal matowy polysk jedwabiu naturalnego. Odróznial sie on korzystnie od jedwabiu zwyklego o7-8 denierach, osiagnietego w równych oko¬ licznosciach przy doprowadzeniu wiekszej ilosci materjalu.Aczkolwiek znana rzecza bylo, iz przy zwyczajnym jedwabiu sztucznym pod¬ wyzszenie temperatury mocno slonej i kwasnej kapieli dawalo nitki o wiekszym polysku, to pierwotne przypuszczenie, iz dzialanie rozpuszczajacego kwasu przy przedzeniu wyciagowem musi byc bardzo powolne, powstrzymywalo od uzywania wyzszych temperatur.Niespodziewanie okazalo sie jednak, ze przy uzyciu wyzszej temperatury np. 45°C. mozna bylo przy tej samej ilosci kwasu w kapieli równie cienko przasc i to niteczki o wielkim polysku.Nitka przyjmuje zatem takze przy prze¬ dzeniu wyciagowem w wyzszej tempera¬ turze taka strukture fizyczna, która jej nadaje wiekszy polysk, mimo polaczone przytern gwaltowniejsze wypedzenie ga^ zów, co zdaje sie pociaga za soba pomniej¬ szenie wytrzymalosci nitki na ciagnienie wskutek niezawodnie istniejacej wiekszej dzalalnosci kwasu w wyzszej temperatu¬ rze.Przyklad.Dwusiarczan sodu o 40°-owej zawarto¬ scikwasu 40 kg Monohydrat kwasu siarkowego 4 kg Wody 60 kg ogrzano do 45°C i wiskoze surowa o sred¬ niej dojrzalosci wtloczono przez dysze o 0,10 mm, przyczem ilosc surowej wiskozy dokladnie dostosowano do ilosci otworów dyszy, do mozliwej szybkosci wyciagania i zamierzonej grubosci przedzy, doprowa¬ dzajac wiskoze pod naciskiem jednostaj¬ nie do otworów dyszy.' Niteczki wyciagane z szybkoscia 40 — 45 m nawija sie na cewki, wrzeciona i t. p. i jak zwykle plócze sie i suszy.Powstaja nitki o wielkim polysku.W ten sposób mozna otrzymac z latwo¬ scia niteczki ponizej 2 denierów. PLFor the production of silk from viscose with the thinnest threads, it has been proposed that the viscose, regularly fed to the nozzle in precisely measured amounts, should be put into a bath, which due to its sufficient passivity, e.g. low temperature and combined with low dissociation, does indeed initiate it decomposes, but it is so slow that it becomes possible by fast, simple pulling, in a known way, stretching a thick thread at the beginning to a very thin dimension, while possibly weak baths were used in the lift compartment system for copper silk. wasting, and even clean water, to allow slow extraction, and it was necessary to drain the extracted very weak filaments through the hanging layer of liquid, or to have them carried with another sliding fluid, and then only the pulled thread should be completely unfolded and free from copper - the above-mentioned system managed to produce very thin threads in a different way. for it is believed that relatively acidic salt baths are perfectly suitable at ordinary temperatures, so that ordinary, used nozzles for artificial silk are directly drawn into thin threads, as is the case with the stretching opening of the copper silk. a saturated sodium disulfate bath was given with a content of about 20% of acid, i.e. about 280 g of sulfuric acid per liter. Operating at 25 ° C, a constant feed rate was achieved that corresponded to the rate of withdrawal and the amount of viscose, threads up to 2 denier. The gloss of the silk thus obtained was similar to that of known copper silk, according to the draft compartment system, i.e. that the silk had a matte luster of natural silk. It differed favorably from ordinary silk of 7-8 denier, achieved in equal circumstances with the addition of more material. However, it was known that with ordinary artificial silk, increasing the temperature of very salty and acid baths produced threads of greater gloss, then the original supposition that the action of the dissolving acid must be very slow in the exhaust interval prevented the use of higher temperatures. Surprisingly, however, it turned out that when using a higher temperature, e.g. 45 ° C. For the same amount of acid in the bath, it was possible to wash as thinly as possible, and threads with a great shine; therefore, the thread also adopts a physical structure, which gives it a greater shine, despite the combined alternation of more violent expulsion of the branch. This seems to reduce the tensile strength of the thread due to the reliably existing higher activity of the acid at higher temperatures. Example: Sodium bisulfate with a 40 ° acid content 40 kg Sulfuric acid monohydrate 4 kg Water 60 kg was heated to 45 ° C and the raw viscose of medium maturity was forced through nozzles by 0.10 mm, while the amount of raw viscose was precisely adjusted to the number of nozzle holes, to the possible extraction speed and the intended thickness of the yarn, bringing the viscose under pressure uniformly into the nozzles. ' Threads pulled at a speed of 40 - 45 m are wound on coils, spindles, etc. and as usual tangle and dry. Produces threads with a high gloss. This way you can easily obtain threads less than 2 denier. PL

Claims (1)

1. Zastrzezenie patentowe. Sposób wyrobu z wiskozy lsniacego jedwabiu o bardzo cienkich nitkach, w mocno kwasnych kapielach solnych, przy którym odpowiednia ilosc wiskozy doprowadza sie do otworów dyszy z u- wzglednieniem zamierzonej grubosci prze¬ dzy i szybkosci wyciagania, tern znamien¬ ny, iz temperature kapieli ustala sie na 45°C lub wyzej. Ver. Glanzstoff-Fabriken A. G. Zastepca: M. Kryzan, rzecznik patentowy. ZAKl.6RAF.K0ZIA*SKICX W WARSZAWIE PL1. Patent claim. A method of making viscose, shiny silk with very thin threads, in strongly acidic salt baths, in which the appropriate amount of viscose is fed to the nozzle holes, taking into account the intended thickness of the thread and the speed of extraction, the significant temperature of the bath is set at at 45 ° C or higher. Ver. Glanzstoff-Fabriken A. G. Zastepca: M. Kryzan, patent attorney. ZAKl.6RAF.K0ZIA * SKICX IN WARSAW PL
PL524A 1920-03-24 A method of producing shiny silk with the thinnest viscose threads. PL524B1 (en)

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PL524B1 true PL524B1 (en) 1924-09-30

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