PL6481B1 - Method for bleaching of fibrous materials. - Google Patents

Method for bleaching of fibrous materials. Download PDF

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Publication number
PL6481B1
PL6481B1 PL6481A PL648125A PL6481B1 PL 6481 B1 PL6481 B1 PL 6481B1 PL 6481 A PL6481 A PL 6481A PL 648125 A PL648125 A PL 648125A PL 6481 B1 PL6481 B1 PL 6481B1
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PL
Poland
Prior art keywords
bleaching
liquid
fibrous materials
liquor
fabric
Prior art date
Application number
PL6481A
Other languages
Polish (pl)
Filing date
Publication date
Application filed filed Critical
Publication of PL6481B1 publication Critical patent/PL6481B1/en

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Description

Wynalazek minie jsizy dotyczy niowego sposobu bielenia materjalów wlókienni¬ czych zapomoca cieczy krazacej.Dotychczas ciecz bielona przepuszcza¬ no przez napelniony materjalem wlókien¬ niczym zbiornik, zmuszajac ja do obiegu kolowego zapomoca ssania, np. na dnie zbiornika i doprowadzania jej u góry w kilku punktach. W celu równomiernego po¬ dzialu cieczy w materjale zmieniano stale lub okresowo nietylko punkty doplywu cie¬ czy, lecz równiez i punkty ssania lugu bie¬ lacego na dnie zbiornika zapomoca odpo¬ wiednio urzadzonych kurków. Jednak dla dokladnego przepojenia materjalów wló¬ kienniczych nalezy uzyc stosunkowo znacz¬ ne ilosci lugów, ponadto, w miejscach o mniejszym oporze, wewnatrz materjalu wy¬ twarzaly sie kanaly i drogi, któremi ciecz splywala, wobec czego obróbka mater jalu odbywala sie nie wszedzie jednakowo.Stosownie do niniejszego wynalazku bielenie uskutecznia sie w ten sposób, iz umieszczony w zbiorniku materjal wlókien¬ niczy zwilza sie ciecza bielaca, doprowa¬ dzana kroplami lub cienkiemi strumienia¬ mi zapomoca rury, przesuwajacej sie usta¬ wicznie nad mater jalem, dzieki czemu cicez przenika nawskros wloskowaty mater jal, o- padajac nadól tylko pod wplywem sily ciezkosci, bez stosowania ssania lub cisnie¬ nia, nie wytwarzajac kanalików, lecz wy¬ lacznie pod wplywem wloskowatosci ma¬ ter jalu. Wynalazek niniejszy opiera sie na tem spostrzezeniu, ze bielenie tkaniny za¬ lezy wylacznie od równomiernego podzialucieczy bielarskiej w calej masie tkaniny i ze dla osiagniecia tego nie nalezy stosowac znacznych ilosci cieczy i zmuszac jej do e- nergicznego obiegu. Ciecz, przeplywajac przez materjal ze znaczna szybkoscia, bie¬ li ja niejednolicie, co objasnia sie tern, ze w tkaninie wytwarzaja sie w miejscach o mniejszym naporze drogi, któremi ciecz splywa nadól, podczas gdy w miejscach, gdzie materjal zalega scislej, ciecz przeply¬ wa tylko z trudnoscia. Zjawisko to wyste¬ puje zawisze ilekroc ciecz przeplywa szyb¬ ciej, niz pozwala na to wloskowatosc, wzglednie szybkosc wchlaniania. Postepu¬ jac jednak w mysl niniejszego sposobu, o- siaga sie równomiernie przepojenie mate¬ rjalu, dzieki jego wloskowatosci, bez wzgledu na to, czy materjal jest ulozony scisle, czy tez luzno w postaci motków, po¬ zostawiajac swobodne przestrzenie we¬ wnetrzne. Równomierne przepojenie ma- terjalu osiaga sie w ten sposób, iz w jed¬ nostke czasu doprowadza sie taka, tylko ilosc cieczy, azeby cala masa materjalu nasyci¬ la sie calkowicie, unikajac starannie nad¬ miaru. W ten sposób na jednostke mate¬ rjalu przypada stale okreslona ilosc cie¬ czy, dzieki czemu zadna czesc materjalu nie wybieli sie wczesniej i dokladniej niz inne.Ciecz doprowadza sie w postaci kropel lub cienkich strumieni zapomoca natrysku, ustawicznie sie poruszajacego, przyczem ido materjalu doprowadza sie tyle tylko cie¬ czy, ile jej scieka z materjalu do dolnej czesci zbiornika.Bielenie przeprowadzone w mysl niniej¬ szego wynalazku, daje lepsze wyniki, co nalezy przypisac prawdopodobnie temu, ze powietrze przenika wraz z ciecza materjal, zwiekszajac dzialanie tejze.Bielenie niniejszym sposobem mozna przeprowadzic zapomoca bardzo prostego i latwego do obslugi urzadzenia, dzieki cze¬ mu wypada ono znacznie taniej, niz zapo¬ moca urzadzen znanych, zaopatrzonych np. w zlozone przyrzady do jednostajnego po¬ dzialu cieczy. PL PL PLThe invention of this invention concerns a new method of bleaching textile materials using a circulating liquid. Previously, the bleached liquid was passed through a tank filled with the textile material, forcing it into a circular circulation by means of suction, for example, at the bottom of the tank, and feeding it at the top at several points. To ensure even distribution of the liquid in the material, not only the liquid inlet points but also the bleaching liquor suction points at the bottom of the tank were changed continuously or periodically using appropriately arranged taps. However, to thoroughly saturate the textile materials, relatively large amounts of lye had to be used. Moreover, in places of lower resistance, channels and paths were created inside the material through which the liquid flowed, so that the treatment of the material was not uniform everywhere. According to the present invention, bleaching is carried out in such a way that the textile material placed in a tank is wetted with bleaching liquid, supplied in drops or thin streams by means of a pipe constantly moving over the material, thanks to which the liquid penetrates through the capillary material, falling down only under the influence of gravity, without the use of suction or pressure, The present invention is based on the observation that bleaching fabric depends solely on the uniform distribution of the bleaching liquor throughout the fabric, and that to achieve this, it is not necessary to use large quantities of the liquor and force it to circulate vigorously. The liquor, flowing through the fabric at a considerable speed, bleaches it unevenly, which is explained by the fact that in the fabric, in places of lower pressure, paths are created through which the liquor flows downward, while in places where the fabric is more dense, the liquor flows only with difficulty. This phenomenon occurs whenever a liquid flows faster than its capillary properties, or its absorption rate, allow. However, by following this method, uniform saturation of the material is achieved due to its capillary properties, regardless of whether the material is packed tightly or loosely in skeins, leaving internal spaces free. Uniform saturation of the material is achieved by applying just enough liquid per unit of time to completely saturate the entire mass of the material, carefully avoiding excess. In this way, a constant amount of liquid is applied per unit of material, ensuring that no part of the material is bleached earlier or more thoroughly than the others. The liquid is supplied in the form of drops or thin streams by means of a constantly moving spray, and only as much liquid is supplied to the material as drips from the material to the lower part of the tank. Bleaching carried out according to the present invention produces better results, which is probably due to the fact that air permeates the material along with the liquid, increasing its effectiveness. Bleaching by this method can be carried out using a very simple and easy-to-use device, which makes it much cheaper than using known devices equipped, for example, with complex devices for uniform distribution of the liquid.

PL6481A 1925-11-21 Method for bleaching of fibrous materials. PL6481B1 (en)

Publications (1)

Publication Number Publication Date
PL6481B1 true PL6481B1 (en) 1927-01-31

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