MXPA03005845A

MXPA03005845A - Method for producing filter cigarettes.

Info

Publication number: MXPA03005845A
Application number: MXPA03005845A
Authority: MX
Inventors: Susilo Buana
Original assignee: Susilo Wonowidjoyo
Priority date: 2002-08-08
Filing date: 2002-08-08
Publication date: 2005-02-14
Also published as: EP1526784A1; DK1526784T3; DE50205877D1; JP2005535326A; BR0207155A; ATE318085T1; EP1526784B1; CN1276734C; WO2004014162A1; CA2454205A1; AU2002329521A1; US20050199251A1; CN1525823A

Abstract

The invention relates to a method for producing filter cigarettes (10) that, in a longitudinal direction, have at least two filter sections (20, 22) each made of a different material. The inventive method comprises the following steps: Endless strands are made from each filter material and consist of a first and second filter material with a wrapping; first and second sections (30, 32) each comprised of a different filter material of a predetermined length are made from the endless strands; the sections are alternately arranged next to one another to form a row while interspaced at a distance (34) and are continuously wrapped in order to form another endless strand; this other endless strand is divided into double filter sections (36) whose ends are composed of a first or second section of half the length and whose middle area is composed of an entire second or first section; the double filter sections are each placed between two tobacco sticks and are each joined to the assigned tobacco stick by means of an end wrapping (48), and; the double filter sections are severed in the middle.

Description

METHOD FOR THE ELABORATION OF CIGARETTES WITH FILTER DESCRIPTIVE MEMORY The invention relates to a method for the preparation of cigarettes with a filter according to claim 1 or 2 of the patent. From DE 36 35 958 or E.U. 4 807 647 a filter cigarette has been known, wherein the filter cigarette comprises two air permeable components or cores aligned in the longitudinal direction and a common envelope. The first component is to generate a relatively large pressure drop in the longitudinal direction of the filter. In the radial direction, however, the filter is substantially impermeable to air through its entire cross section. The second component is to generate a relatively small pressure drop in the longitudinal direction of the filter while in the radial direction it is also permeable to air. The components can immediately be linked to one another or have a space between them. This space is to achieve a ventilation in the filter, which defines a chamber formed through the space between the filter components. In this area the casing is perforated in order to achieve an improved distribution of tobacco smoke through the total cross section in the filter area under reduction of condensate and nicotine contents without affecting the taste of the cigarette. The structure of the known cigarette is such that a filter component has its own wrapper, and a common wrapper is provided for the second component, as well as for the tobacco rod. The connection of the filter to the tobacco rod takes place by means of an additional wrapper which covers the tobacco rod at the end associated with a certain partial length. The manufacture of such cigarettes with a filter is relatively expensive. The object of this invention is to provide a method for making filter cigarettes having substantially the same components as a known filter cigarette where the method can be carried out easily and effectively. In addition, the structure of the filter varies in different aspects. This objective is achieved through aspects of claims 1 and 2 of the patent. In the method according to the invention a continuous line or tape is made of a filter material. The filter material can be, for example, acetate or carbon. The first and second sections of the predetermined length are made of solid lines. The length of both sections, for example, is, or preferably is the same. From the first and second sections, an additional continuous line is formed, where the sections alternate. The arrangement of the sections is such that they have a predetermined distance from one another, for example from 3 to 6 cm. The line is continuously wrapped by a suitable wrapper. From this continuous line, double filter sections are generated. Each double filter section includes three portions, ie a first section of medium length at the end portions and a second section at the total length at the center of the double filter section. In the case of a double filter arrangement, in particular those that include carbon, it is usual to provide the filter portion, for example, acetate or paper filter at the end of the complete filter. The above is for aesthetic reasons. For example, the arrangement of the sections in the double filter section is such that the end portions of the average length consist of filter material which is to form the end of the mouth piece. The double filter sections are then located between two aligned tobacco rods and are connected to it. Then, the double filter sections are separated in the center, preferably by a cutting operation. Usually, this is done through a corresponding cylinder of a cigar making machine. By means of the method according to the invention, a space between the filter portions can be generated in a simple manner in order to form ventilation chambers of desired length. In the solution of patent claim 2 during the manufacture of the third continuous line, the filter sections are immediately arranged one after the other without a space. With the connection of the tobacco rod through the double filter portion, a chamber is formed by providing a respective space between the double filter portion in the tobacco rod. A geometrically defined arrangement of perforations is not necessary.

An exemplary embodiment for carrying out the method according to the invention is subsequently described throughout the attached drawings. Figure 1 schematically shows a cigarette with a filter according to the prior art. Figure 2 shows a step of the method according to the invention. Figure 3 shows a cross section through a filter cigarette manufactured according to the method of the invention. The filter cigarette of Figure 1 comprises a tobacco rod 12 and a filter portion 18. The tobacco rod consists of a portion 14 of tobacco which is wrapped by a paper wrapper 16. The filter portion 18 consists of a first filter section 209 and a second filter section 22, which are of different materials and have a separation, which is indicated through line 24 of points. The filter sections 20, 22 are interconnected through a common envelope indicated at 26 and connected to the tobacco rod 12. In the method according to the invention, the continuous lines of a filter material for a first and second filter As shown in Figure 1, they are generated (not shown). The filter material is, for example, an acetate or filter paper or, on the other hand, carbon. Both filter materials are generally known. The solid lines are provided with a suitable wrapper, for example paper.

The first and second sections of a predetermined length, preferably equal, are generated from solid lines. This can be done in staggered operations, as for example in first sections of a length of 132 mm, they are generated and then divided into lengths of 44 mm, which in turn are divided into sections of 22 mm in length. The two different sections are subsequently arranged in a series of alternating first and second sections. Because of this, an additional continuous line is generated. The different suctions are designed with 30 and 32 in Figure 2. As shown in Figure 2, sections 30, 32 can be ordered in pairs. Between the sections, the openings of for example, 3 to 6 mm are left. These openings or separations are designed with 34. These continuous lines during their manufacture are provided with a wrapper (not shown). This line also continues as also shown in Figure 2, divided into portions 36 of double filter. Each double filter portion comprises an intermediate section 32 and end sections which are formed through the average length of the section 32. The wrapped double filter portions 36 are then placed between the two aligned tobacco rods, in particular in a Known cylinder of a manufacturing machine (not shown). After connection with the tobacco rods, the portions 36 of the double filter are separated in the center as indicated through line 38 of dashed-points in Figure 2. Through this, the filter portions 40, 42 of 11 mm in length, they are reached (sections 30, 32 have already been described and have a length of 22 mm). The separation 34 remains the same. The arrangement of the filter portions 40, 42 with the common wrapper 44 is then joined to a tobacco rod 46, by means of an additional wrapper 48 which partially covers the end of the tobacco rod which is already known per se. In Figure 3, it is shown that an additional gap or opening 50 is provided between the filter portion 42 and the tobacco rod 46. The separation is formed alternatively to the partition 34 or additionally thereto. Both spaces or openings 34, 50 form a smoking ventilation chamber of the tobacco rod 46, whereby the contents of condensate and nicotine are reduced. The wrapping 48 or 44, respectively, can be pierced in desired portions. The perforation of casings is also known. The method described can be carried out with known apparatuses or machines for the manufacture of filter cigarettes. A particular expense for this is not necessary.

Claims

NOVELTY OF THE INVENTION CLAIMS

1. - A method for making cigarettes with a filter that in the longitudinal direction, comprises at least two filter portions of different material with the following method steps: continuous lines are generated from at least one first and second material and are provided with a envelope; first and second portions which are cut from a continuous line of different filter material, the sections have a predetermined length; the sections are alternately ordered with a predetermined spacing from one another and continuously wrapped to achieve an additional continuous line; the additional continuous line is divided into double filter sections having end portions and a central portion, the central portion is formed of a first filter section of a first material and the end portions are formed through the middle of the section of the second filter material; the double filter sections are located between the tobacco rods aligned and connected to it through a final wrap; the filter sections are cut in the center.

2. The method for the manufacture of filter cigarettes having at least two filter portions of different filter material, with the following steps of the method; Continuous lines are manufactured from the first and second filter material, each having a wrapper; first and second sections of different length of predetermined length, are generated from the first and second continuous lines; the sections are alternately ordered and continuously wrapped to form an additional continuous line; the additional continuous line is divided into double filter sections having end portions and a central portion; the central portion is formed through the total length of a first section and the end portions are formed through the middle of the second sections; the double filter sections are located between the aligned tobacco rods that form a space with respect to the associated tobacco rod and are connected to the tobacco rod through a final wrapper; The double filter sections are cut in the center of it.

3. - The method according to claim 1 or 2, further characterized in that the separation between the filter portions or the tobacco rod and the associated filter portion, respectively, is between 3 and 6 mm.

4. - The method of one of claims 1 to 3, further characterized in that the envelope is pierced in desired portions.