DD264949A1 - METHOD FOR PRODUCING CONTAINMENT PAPER FOR SMOKING MATERIALS - Google Patents

Abstract

The invention relates to a process for the production of wrapping paper for smokable materials, especially cigarette paper with high utility value. The object of the invention is to find a method by which wrapping paper for smokable materials can be produced, which has the required mechanical and flow properties and excellent burn-off and very good taste characteristics. This is achieved by mixing 0.1 to 45% by weight of glass fibers based on the total pulp content of the fiber or / and pulp suspension. The pulp has from 82 to 98 Schopper-Riegler and a water retention capacity of 140 to 260%. 80 to 95 Schopper-Riegler and a water retention capacity of 100 to 240% can be measured on the finished paper stock. The average diameter of the glass fibers is up to 0.008 mm, their length 0.1 to 5 mm. The glass fibers can also contain 50 to 99.9% ZrO2 in addition to the usual components.

Description

Field of application of the invention

The invention relates to a process for the production of wrapping papar door smokable materials, especially cigarette paper with high utility value.

Characteristic of known technical solutions

High-quality wrapping papers for smokable materials, in particular Zigc save papers with a sheet-weighed mass between 12 and 3Qg / rrr are today highly porous, but without visible holes soin, so ui by sufficient air supply in the mainstream smoke. To be able to reduce the proportion of toxic smoke compounds as far as possible. This requires a homogenous leaf structure, which ensures the necessary mechanical and s'.romungstethnic properties of the paper, as well as good burn-off and taste characteristics in connection with the smokable material and a high opacity.

For the production of cigarette papers, fibers based on bast and leaf fibers (eg flat, hemp, sisal), grazers (for example esparto) and coniferous and hardwoods are mainly used today.

All these cellulose-containing fibrous materials have the disadvantage that the achievable porosity of the cigarette papers is only mediocre, that always noticeably undesirable taste undesirable smoke ingredients, especially certain hydrocarbons are present and that the ash tube is mechanically unstable.

Although the porosity of the paper can be increased by a slightly increased f-filler content (at most 35%) or by the use of low-fibrillated fibers, both result in deterioration of the sheet structure and unacceptable losses in mechanical strength.

An improvement of this situation is the DD-PS 145863.

The cellulose-containing fibers are then to be ground in aqueous suspension to a freeness of more than 90 ° Schopper-Riegler and the paper stock is so much filler to add that the ash content of the paper produced therefrom is more than 35%. As a result, although verbecserte porosltäts- and strength values and Blattstruktur-, burn-off and taste values are enough, but also not meet high and highest standards.

In DE-AS 1127199 the use of viscose or copper silk staple fibers is described to achieve a higher porosity.

However, these organic man-made fibers, like the cellulosic organic natural fibers, have the disadvantage that they burn when smoking a cigarette at temperatures in the glow zone between 800 ° C. and 1000 ° C. The folgo are, inter alia.

unsatisfactory burn-off properties, e.g. Peeling the ash tube.

In addition, there is a more or less strong decrease in the mechanical strength of the paper.

Another way to achieve a higher porosity of the paper is given in DE-PS 3210461. The proposed addition of AljOjFasern should continue to cause a homogeneous leaf structure and improved Abbrand- and taste properties. That is, by the unburned AI, Oj-fibers in the paper axis, a closed, solid ash hose to arise. Such a paper, worked with AljOj fibers would have according to the current state of knowledge

thus best meet the quality requirements en a high quality cigarette paper. The disadvantage, however, is that the present in the paper ash, unburned or unchanged Ausgangefasern no noticeable firmer

Forming ash, making the paper's porosity barely above the usual level, and Al _t Oj fibers

production are extremely expensive.

Glass fibers have been known since ancient times. Since 1930 they are industrially manufactured. The use of glass fibers in the Paper has been known for some time, but not in cigarette paper. Ut .: 1) H.Hentschel: "Chemical Technology of Pulp and Paper Production"

2} J.-D.Schnapp: .Glas generally understandable "VEB specialist book publisher Leipzig 1977, I.Auflage, S. 158

Object of the invention

The aim of the invention is to find a method by which wrapping paper for smokable materials, in particular cigarette paper can be produced, which has the required physical properties and has excellent Abbrand- and very good taste characteristics.

Explanation of the essence of the invention The invention has for its object to provide a method with the wrapping paper for smokable materials

(in particular cigarette paper) having the required physical property as well as excellent burn-off and

Taste characteristics can be produced. This includes the stability of the ash or de Xscheschlauches. It has been found that the problem is solved by 0.1 to 46 wt .-% glass fibers. ezoyen on the total pulp content In

Wflßrioer suspension the fiber and / or the pulp are added and from it paper according to a known

Process is prepared. The pulp used must be 82 to 98 "Schopper Rlegler and a water retention capacity

from 140 to 260%.

On the finished stock then 80 to 95 "Schopper Rlegler and a water retention of 100 to 240" C are measurable. As glass fibers are added those having an average diameter of 0.0002 to 0.008 mm, preferably from

0.0003 to 0.006mm and an average length of 0.1 to 6mm, preferably 1.5 to 4mm. The glass fibers used consist of 67.6-70.1% SiO 2, 2.6-3.0% Al ₁ O ₃ , 6.0-7.0% CaO, 3.0-3.9% MgO, 12, 9-14.2% Na ₁ O, 0.7-3.9% K] 0.1.0-2.7% B ₂ O ₁ , 0-0.4% BaO, 0.1 ~ 0.161j Fe ₂ O ₁ and must be hygienically safe or the

Food legislation. In addition to the usual constituents of the glass fibers, these can also contain 60 to 99.9% ZrO ₁

contain.

By incorporating said fibers into the paper structure, the combustible paper components are reduced. glass fibers

have a high temperature resistance, burn at the In dor Glutzone achievable temperature of max. 10OO'Cnicht. Thus, the inorganic fibers have no direct effect on the smoke ingredients and result in positive influence on the smoke flavor.

Surprisingly, it was found under the specified conditions during the burning of Papleres or elnnr cigarette,

that the untreated glass fiber strongly promotes the porosity. Thus, the formation of toxic compounds (eg CO and

Nitrogen oxides) and the taste-forming substances have been influenced as desired. A positive »catalytic effect

of the inorganic fibers described on the formation and composition of the smoke constituents is also not excluded dibel.

The mixing in of the thinnest glass fibers leads to an improvement of the opacity under otherwise constant conditions. Paper by 1 to 2% compared to wastepaper racks <in. The desired «covering the smokable material by the Envelope paper can thus be very well fulfilled. Exemplary embodiments example 1 As Ausgangsmatoriel wurdon glass fibers with an average diameter of 0.006mm and a length of 2 bin

6mm used. The fibers were added to the otherwise finished paper stock immediately before sheet formation at a level of 2.6% by weight of total fiber content in the form of a 0.6% suspension in known catfish. The natural fiber used was 83% Schopper Rieglei and 105% water-retaining capacity

Pulp itself was measured at 81 'Schopper Rlegler and a Wasserreservhalteve'mög »n of 100%. Thereafter, in a known manner, the production of wrapping papuir for smokable materials also took place

area-related house of 42 g / · »*.

This paper had good porosity and foliage characteristics as well as opacity and abrasion properties. Dor Ash hose was closed and tight. Example 2 A cellulose-containing pulp with a Schopper-Rlegler value of 90 * and a Wuerserrückvermögen of 21C%

20% of glass fibers based on the total material are in the form of an about 0.8% suspension in a known manner. The added glass fibers have an average diameter of 0, W) I mm and a length of about 2 to

Now, the addition of fillers and auxiliaries takes place. The resulting paper gum pulp now showed a degree of freeness ν sn

86 'SR and' in water retention capacity of 120%.

Thereafter, in a known manner, the production of cigarette paper having a basis weight of about 24 g / m ¹

performed.

This paper had very good porosity and burn off properties as well as best opacity and foliar structure characteristics. Thus, the opacity was 0.8% higher than normal, and the ash hose was consistently closed and solid and mechanically stable.

Example 3

A cellulosic fibrous material having a Srhopper-Riegler value of 98 ° and a Wasserrückhaltevermöge.i of 255%, 30% glass fibers based on the Gesamtfasprstoffgehalt in the form of a 0.1% suspension in a known manner to the otherwise finished pulp admixed. The added glass fibers have an average diameter of 0.005mm and a length of 1.5 to 3mm. Now the usual addition of fillers and auxiliaries takes place. The resulting paper furnish now had a freeness of 93 ° C SR and a water retention of 210%. Thereafter, the production of cigarette paper is made in a known manner with a basis weight of 18g / m ² . This paper had excellent porosity and burn off properties as well as very good opacity and leaf structure characteristics. For example, the opacity was 2% higher than normal, and the ash tube was consistently closed and extremely strong and perfectly mechanically stable.

Claims (3)

1. A process for the production of wrapping paper for smokable materials, esp. Cigarette paper, with a surface-related mass of 12 to 55g / m ² , characterized in that the pulp, a freeness of 82 ° to 98 ° Schopper Riegler and a water retention of 140% to 260%, 0.1-45% by weight of glass fibers, relative to the total fibrous material, consisting of 67.6-70.1% SiO ₂ 2.6-3.0% Al ₂ O ₃ 5.0-7.0% CaO 3.0-3.9% MgO
12.9-14.2% Na ₂ O 0.7-3.6% K ₂ O 1.0-2.7% B ₂ O ₃ 0-0.4% BaO 0.1-0.15% Fe ₂ O ₃ and having an average diameter of 0.0003 to 0.006 mm and having an average lung of 1.5 to 4 mm, are added and a paper is produced therefrom by known methods. 2. A process for the production of wrapping paper for smokable materials according to claim 1, characterized in that the finished paper stock 80 ° to 90 ° Schopper Riegler and a Wasserrückhaltevermönen be measured from 100 to 240%. 3. A process for the production of wrapping paper for smokable materials according to claim 1 and 2, characterized in that the glass fibers contain a proportion of 50 to 99.9% ZrO ₂ .