DD145863A3 - METHOD FOR PRODUCING ZIGA ETTENPAPIER - Google Patents

Abstract

The invention relates to a process for the production of cigarette paper from pulp with high utility value. Their aim is to find a method by which to produce cigarette paper which has the same performance characteristics as a paper made from rags, but is cheaper than this. It is the object of the invention to provide a method by which such a paper can be produced under the exclusive use of pulp as a pulp. This is achieved by milling long-fiber wood pulp and short fiber pulp in a liquid suspension to a freeness of more than 90 degrees Schopper-Riegler, adding enough stock to the pulp suspension so that the ash content of the paper produced therefrom is more than 35% and from this paper according to a known method will be produced.

Description

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Eitel process for the production of cigarette paper

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The invention relates to a process for the production of cigarette paper made of pulp with a high utility value «

CharakfreristIk derbekanntentechnisehen_Lösiingen

High-quality cigarette paper is hitherto produced exclusively or predominantly from rags. Fibrous or hemp-based fibers are used. It has proven to be advantageous to mill out the paper stock on 80 ° to 90 ° Schopper-Riegler paper Filler content of 15 to 20 % produce. Kalziuinkarbonai is usually used as the filler. * Such a paper has the desired porosity and opacity. "It also has no deteriorating effect on the taste of the cigarettes produced therewith."

However, the constant shortage of rags in the market force them to replace them. Thus, rags mixed with sulfate pulp are used for the production of cigarette paper. There are also cigarette papers made exclusively of wood pulp. However, as the pulp content increases, the taste influence on the cigarettes deteriorates

Wood pulp produced paper is therefore not used in the cigarette industry, but only comes in leaflet shape for self-rotation of cigarettes on the market. For high-quality cigarettes, for this reason, fibrous wadded cigarette paper is currently being used *

From BIId OS-1 5 ^J '& ^^ 9 is known ₉ cigarette paper with a high utility value without the use of rags produce ^ by a substance _y consisting of finely ground pulp and fibrillated regenerated cellulose _{Feinmahlvürgängc?} under co-use of a filler too. Paper is processed ₀ zvvar has the desired performance characteristics

However, increased expenditure by the higher price of the pulp of regenerated cellulose and by the more intensive Bearbeitungs.der fibers to achieve the required degree of grinding, such a paper is more expensive than a cigarette paper made from rags.

Aim of the invention

The aim of the invention is to find a method with which cigarette paper can be produced which has the same service properties as a paper made from rags, but is cheaper than this

the essence of the invention,

The invention has for its object to provide a method by which cigarette paper can be produced with high utility value using only pulp as pulp «

It was found that the object is achieved by 50 to 80 % by mass of long-fiber wood pulp and 20 to 50 % by mass of short fiber pulp, each based on the total pulp content, ground in aqueous suspension to a freeness of more than 90 ° Schopper Riegler, the pulp suspension so much filler is added that the ash content of the paper produced therefrom is more than 35 % and paper is produced therefrom by a known process. [0111] The wood pulp used is preferably a bleached pine pulp produced by the cathodic or sulphate process and a bleached pulp of annual plants used as short fiber pulp Filler is preferably calcium carbonate in consideration

According to the invention, the paper can be impregnated with mixtures of alkali metal salts and alkaline earth salts of acetic acid, Y / acid, citric acid or * nitric acid »

example 1

65 % by the natural method. prepared and bleached pine wood ze 11 fabric and 35 % bleached straw pulp were got in:

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ter manner so finely ground that a ₅ Liahlgrad of 92 ° Schopper-Riegler is attained.

In the conventional type has a lot of filler mainly composed _s incorporated from Kai-ziurokarbonat, as is required to form at least 35% of remaining filler in paper (calculated as the residue on ignition at 450 ⁰ C). From the mixture thus prepared, a paper web of 23 g / m 2 was prepared on a paper machine, which was prepared with a mixture of 70% potassium sodium tartrate and 30% sodium nitrate. * This paper was classified as "porosity". Opacity, burn-off properties and taste of non-market based ragged cigarette papers

Example 2. ... ..

70 % soda-processed and bleached pine wood pulp and 30 % bleached bagasse pulp were finely ground in a known manner to give a grind of 91 ° C it is necessary in the paper of remaining filler to .bilden (determined at least 37% residue on ignition at 450 ⁰ C would from the thus bereitetem mixture on a paper machine, a

2 paper web of 23 g / m formed with a mixture of 75%

Seignette salt and 25 % potassium nitrate were prepared. "The paper did not differ in porosity, opacity, and taste from market-leading cigarette papers made using hadm cellulose.

Example 3

70% after the soda produced and bleached pine pulp and 30% bleached Espartozellstoff warden finely ground in a known manner so that a degree of beating of 92 ° pint Rieglor been reached * There was a lot of filler f ^ consisting in the usual manner mainly of Kslz-iumkai'bonat ₅ as needed to fill lot off at least 35 % in the paper: a (determined as reflux residue at 450 ^° C. From the 30 prepared mixture, a paper web of 23 g / m 'was obtained on a paper machine ^: formed _"t was triimiaz.etat with a mixture of 60% Νε UUD prepared 40% barium nitrate" the so Duty Recovery

paper did not differ from the leading cigarettes papers on the market *

Claims (1)

SrfindungsansPruch A process for the production of cigarette paper of pulp of high utility value, characterized in that 50 "to 80 % by mass of long-fiber wood pulp and 20 to 50 % by mass of short-fiber pulp _{v are} each based on the total pulp content, in aqueous suspension to a freeness of more than 90 °. Riegler ground, added to the Paserstoffsuspension so much filler that the ash content of the paper produced therefrom is more than 35 % and from this paper is produced by a known method * 2 Method according to item 1, characterized by the use of a bleached pine pulp produced by the sodium or sulphate process as wood pulp and a bleached pulp of annual crop as short fiber pulp. 3 «Method according to item 1 and 2, characterized by the use of kalsium carbonate as filler. 4. The method according to item 1 to 3 characterized in that the paper is impregnated with mixtures of alkali and alkaline earth salts of acetic acid, tartaric acid, citric acid or »nitric acid» 6 -