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AssigneeTriatex International AG
InventorsHans Bors, Peter Egger, Albert Gotz, Martin Schwemmer
Estimating the term…
A method for the continuous and uniform application of controlled amounts of treating liquor on a liquid receptive material web comprising passing the web over a counter-roll having a resilient, non-skid surface and then passing the web onto an applicator roll with a metallic cylinder surface that has been dipped into a vat of treating liquor and making the treating liquor a uniform film on the roll. The treating liquor is tested before use by placing a quantity of the liquor in a mixing container, rotating the container for a first period and measuring the volume of treating liquor plus foam that develops in the container, and making two subsequent volume readings after further periods of time, adding all of the volume readings and comparing the sum with a standard value, and also determining that each volume reading is less than the preceding reading, and rejecting treating liquor which does not meet the foregoing requirements.
A process of continuous and uniform application of controlled amounts of treating liquor to an advancing, liquid recpetive material web, comprising the steps of passing said material web over a counter-roll having a resilient but non-skidding surfasce and then passing said web in supported web condition onto an applicator roll having a metallic cylinder surface which has been dipped in a vat of treating liquor and is carrying a uniform liquor film, and rotating said applicator roll and counter-roll in the same directions, and using control means to control the amount of treating liquor on said web, whereby said material web is supplied in a continuous and uniform manner with amounts of treating liquor not exceeding the liquid saturation of said web;
A process of continuous and uniform application of controlled amounts of treating liquor to an advancing, liquid receptive material web, comprising the steps of passing said material web over a counter-roll having a resilient but non-skidding surface and then passing said web in supported web condition onto an applicator roll having a metallic cylinder surface which has been dipped in a vat of treating liquor and is carrying a uniform liquor film, and rotating said applicator roll and counter-roll in the same directions, and using control means to control the amount of treating liquor on said web, whereby said material web is supplied in a continuous and uniform manner with amounts of treating liquor not exceeding the liquid saturation of said web;
The process of claim 28 wherein the amount of treating liquor applied per unit area of said material web is controlled by adjusting the rotation speed of said applicator roll.
The process of claim 28 wherein the amount of treating liquor applied per unit area of said material web is controlled by adjusting the liquor temperature, said applicator roll being realized in the form of a hollow cylinder, or the liquor itself being cooled or heated.
The process of claim 28 where said material web is guided over said counter-roll with a contact angle of from 60.degree.to 120.degree., typically about 100.degree..
The process of claim 28 wherein an already liquor containing but not yet saturated material web is impregnated with an amount of further treating liquor, said amount corresponding to a predetermined value per unit area or corresponding to the difference up to a predetermiend total of the weight per unit area.
Dependencies are inferred from the claim text.