JPH06166997A - Rolled paper for filter element and preparation of filter element using said rolled paper - Google Patents

Abstract

PURPOSE: To obtain rolled paper for a filter element while reducing a vapor phase component by supplying the rolled paper to an applicator, applying a holding means at some intervals in the longitudinal direction of the rolled paper and then applying a vapor phase component reducing means to hold by the holding means. CONSTITUTION: Plug paper 10 is carried to a glue applicator 5 to apply an adhesive to the paper at desired intervals and passed through a fluidizing chamber 6 of an absorbent such as carbon particles. The absorbent is adhered to the glue-applied area of the plug paper and the excessive absorbent is removed using a blower 7. The paper thus processed is carried to a filter-molding unit 20 through a sewing adhesive applicator 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter element wrapping paper and a method for producing the same, and more particularly to a cigarette smoke filter element wrapping paper.

[0002]

BACKGROUND OF THE INVENTION The use of substances which reduce vapor phase components in cigarette smoke filter elements is known. Means for reducing vapor phase constituents are usually carbon and granular activated carbon, but other absorbents such as vermiculite and other porous minerals have also been utilized.

Filter elements which employ means for reducing vapor phase components include said means in a central recess located between the two end segments, and such filters are referred to as "three-layer filter elements". Some such three-layer filter elements have a central portion consisting of a carbon sheath wrapped around the circumference of a cellulose acetate tow (bundle). To make such a filter element, the central carbon-containing part is made as a continuously wound rod on one machine and the end part is made as a continuous unwound cellulose acetate rod on the next machine. Sent. The carbon exterior part is made by lining (lining) plug paper with carbon particles. The carbon lined wrapping paper is wrapped around a bundle of cellulose acetate tow to form a carbon lined rod which is cut into unit lengths. In this process, since the knife of the cutter cuts through the wrapping paper containing carbon, it is easily worn, and when cutting a continuous carbon lining rod, carbon may be spilled from the lining paper with carbon lining or carbon It has the disadvantage of damaging and contaminating the machine and the filter element made. Thus, when a carbon-containing filter element is combined with a cellulose acetate filter element and wrapped with plug paper, carbon debris breaks through the plug paper, thereby changing the properties of the plug paper and the function of the filter element. Furthermore, since the element having carbon is separately formed and wound, the carbon-containing portion is doubly wound with another plug paper. Therefore, the cost is high and the process is complicated.

[0004]

The object of the present invention is to overcome the disadvantages of making cigarette paper for cigarette smoke filter elements, in particular by reducing the vapor phase constituents, by means of an on-line method.

[0005]

In order to achieve the above object, the present invention provides a method for producing a wrapping paper for a filter element in which vapor phase components are reduced, in which the wrapping paper is a filter making machine. Is supplied from the wrapping paper supply means to the applicator, and the applicator applies the holding means to the wrapping paper at a portion provided in the longitudinal direction of the wrapping paper, and the wrapping paper supplies means for reducing the vapor phase component. After passing through the station, the vapor phase component reducing means is held by the holding means, and the wrapping paper is supplied to the filter material winding means of the filter making machine.

The present invention further provides a method of manufacturing a filter element for reducing vapor phase components, the method comprising feeding a filter medium and a wrapping paper for the filter medium to a filter medium packaging means of a filter making machine. The wrapping paper is composed of a portion holding the vapor phase component reducing means, and this portion is provided with a gap in the longitudinal direction along the length of the wrapping paper. Further, the method forms a filter rod by winding the filter medium with the wrapping paper, and arranging a gap between longitudinally spaced portions of the filter rod holding the vapor phase component reducing means. Consists of cutting.

The portion holding the vapor phase component reducing means is preferably provided on the wrapping paper while the wrapping paper is supplied from the wrapping paper supply means to the filter making machine.

The invention further provides a filter element capable of reducing the vapor phase constituents of cigarette smoke, the filter element comprising a paper wrapper made by the method of the invention.

The filter element may be ventilated or non-ventilated. If the filter element is ventilated, the ventilation means is preferably located towards the upstream end of the filter element, ie towards the end of the filter element adjacent to the tobacco rod. Advantageously, the filter element has a chewing portion with an annular portion of the vapor phase component reducing means, the reducing means being located between the ends where the annular portion is absent. If desired, the filter element may have an end with an annular portion of the vapor phase component reducing means, where the reducing means is located adjacent to another end without such an annular portion. .

The filter making machine is preferably a cigarette smoke filter making machine and the treated wrapping paper is preferably wrapped around the household goods when fed to the filter media winding means of the making machine. The filter making machine may be capable of combining and winding multiple components of the filter element. If desired, the filter maker may produce a single rod of filter media.

The wrapping paper is preferably a plug paper, which may be air permeable or impermeable. If plug paper is not used, the wrapper may be tipping paper.

The wrapping paper supply means is advantageously a device provided with a bobbin, the bobbin of the wrapping paper being mounted on the device for transporting the wrapping paper through the filter making machine.

Preferably, the applicator that operates to provide the retaining means in the longitudinal gap of the wrapper is an adhesive applicator. The adhesive applicator may be a skip gap roller or a skip gap patch applicator. The applicator preferably does not apply the retaining means to the portion that is or will be coated with the lap suture adhesive.

The holding means is an adhesive, which may be glue or other adhesive.

The vapor phase component reducing means supply station is provided with vapor phase component reducing means by other means, for example by air injection through a vapor phase component reducing means source, whereby air injection is provided to the paper wrapper having holding means. Even so, a fluidized bed including a vapor phase component reducing means is desirable. If desired, the wrapping paper may be passed by a gravity slope through the vapor phase component reducing means.

[0016] The vapor phase component reducing means is preferably carbon or activated carbon, and particularly preferably in particulate form.

It is advantageous to subject the wrapping paper to a means for removing excess material as it exits the vapor phase component reducing means supply station. Suitably the surplus material removed is collected by the collecting means and returned to the vapor phase component reducing means supply station.

Since the wrapping paper is fed through the filter maker, the vapor phase component reducing means and the holding means are advantageously applied to the underside of the wrapping paper. The coated lower portion of the wrapping paper is the portion of the wrapping paper that comes into contact with the filter material, whereby the vapor phase component reducing means forms the lining of the wrapping paper.

After the vapor phase component reducing means is applied to the wrapping paper, the reducing means does not come into contact with any other surface or material until the wrapping paper is conveyed to the filter material packaging means of the filter maker. Is preferred.

The filter material of the filter element wrapped by the wrapping paper made according to the invention may be cellulose acetate, viscose, polypropylene tow or paper.

The present invention makes it possible to apply the vapor phase component reducing means online on the filter manufacturing machine. The filter maker may be a machine capable of combining a conventional single filter media collecting and wrapping paper or another filter element. According to the present invention, therefore, the applied holding means and vapor phase component reducing means can be provided intermittently at predetermined positions. An advantage of the present invention is that it usually requires a single layer of wrapping paper and the vapor phase component reducing means are applied intermittently to provide precise control and further alignment of the carbon for lining the central portion. Three
When forming the filter element of the layer, the carbon containing portion is not cut. It is therefore possible to reduce wear and tear on the cutting knife and the machine, and to avoid carbon contamination of the machine and the filter element.

The wrapping paper of the present invention is an ACS (activated carbon exterior) filter and applicant's UK patent application No. 9214267.
It is suitable for producing the other filters disclosed in No. 8.

The wrapping paper of the present invention is also suitable for producing two or three layer filter elements.

The two- or three-layer filter element using the wrapping paper of the present invention may not be a separate element assembled by the wrapping paper but may be composed of an integral filter medium such as cellulose acetate tow.

The present invention will be described in detail with reference to the accompanying drawings which show an on-line method for producing the wrapping paper of the present invention coated with a vapor phase component reducing means.

Drawings are Hauni KDF2 or KDE3 or Haun
A schematic representation of a plug paper transport system for a filter making machine such as the iPlug Tip Combiner (Hauni PTC). The plug paper (10) is passed through a transport roller (2) that tensions the paper from the bobbin (1), and further through a splicing part (3) and a transfer part (4) of the plug paper to the first processing station or glue. Transported to applicator (5). The glue applicator (5) may be a skip gap roller applicator or a skip gap patch sprayer. The glue applicator (5) serves to apply the adhesive in controlled patches or squares over the required area of the longitudinal gap of the plug paper at the required intervals. The glue applicator (5) is used to form the filter rod (1) when forming the filter rod.
Glue may be provided so that a margin for longitudinal lap stitching for longitudinal sealing of (0) is provided. If a lap stitch glue has already been applied, this glue should not overlap the carbon particles. The glue from the glue applicator (5) is applied to the underside of the plug paper which is the inside of the plug paper (10) when it is wrapped around the filter media (21) to form the filter rod.

The plug paper (10) is then passed through a fluidized bed (6) of carbon particles or other absorbent material. There, the carbon particles adhere to the glued areas of the plug paper. A blower (7) is installed to remove excess carbon particles and dry the glue after the plug paper (10) exits the fluidized bed of carbon particles (6). Excess carbon particles fall on the tray and are returned to the fluidized bed (6) for the next carbon particle application.

The carbon coated plug paper (10) has a transport roller (8) and a suture adhesive applicator (9).
It is conveyed to the filter molding device (20) via the, and the lap suture glue is applied from this applicator by a usual method.

In this method, the carbon-bearing side of the plug paper does not come into contact with the other side until it is wrapped around the filter media (21) fed to the device (20) of the filter maker.

With this, the wound filter rod is manufactured,
The wrapping paper or plug paper (10) has a portion along it which holds the vapor phase component reducing means spaced longitudinally. A knife (not shown) of the rod cutter was timed to cut the wound filter media rod at a position provided between the longitudinally spaced portions holding the vapor phase component reducing means. It is configured. In other words, the knife of the rod cutter only cuts the plug paper and the filter material and does not contact the carbon particles.

The present invention can also provide a continuous on-line method of making carbon coated plug paper for use in making carbon filters. In this case, the carbon filter is preferably the ACS type filter or monoacetate filter described above. The problems created by the previous method are overcome by the method of the present invention.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an on-line method of making a paper wrapper of the present invention.

[Explanation of symbols]

 1: Bobbin, 2: Conveying roller, 3: Splicing part, 5: Applicator, 6: Fluidized bed, 9: Applicator, 10: Plug paper.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical indication location A24D 3/16 7229-4B (72) Inventor Colin Camble Grieg, Red Lynch, Wiltshire, England Quaybey Road, The Old Granary (no house number) (72) Inventor Peter Rex White, Hampshire, Romsey, Dottons Road 20

Claims (21)

[Claims] 1. A method of manufacturing a wrapping paper for a filter element for reducing vapor phase components, wherein the wrapping paper is supplied from a wrapping paper supply means of a filter maker to an applicator, the applicator having a gap in a longitudinal direction of the wrapping paper. The holding means is applied to the wrapping paper at a portion where the wrapping paper is provided, the wrapping paper passes through a station where the vapor phase component reducing means applies the vapor phase component reducing means held by the holding means, and the wrapping paper is the filter. A method of supplying a means for winding a filter medium of a manufacturing machine. 2. The method of claim 1, wherein the wrapping paper is a plug paper. 3. The method of claim 2, wherein the plug paper is air permeable. 4. The wrapping paper supply means is a bobbin mounted device, and the wrapping paper bobbin is mounted on the device for transporting the wrapping paper through a filter manufacturing machine. Method of 2 or 3 5. The applicator that operates to apply the holding means is an adhesive applicator in a portion of the wrapping paper provided with a gap in the longitudinal direction. the method of. 6. The method of claim 5, wherein the adhesive applicator is a skip gap roller. 7. The method of claim 5, wherein the adhesive applicator is a skip gap patch applicator. 8. A method according to any one of the preceding claims, characterized in that the holding means is an adhesive. 9. A method according to any one of the preceding claims, characterized in that the vapor phase component reducing means is carbon. 10. The method of claim 9, wherein the carbon is activated carbon. 11. A method according to any one of the preceding claims, characterized in that the vapor phase component reducing means coating station is a fluidized bed containing vapor phase component reducing means. 12. The vapor phase component reducing means coating station comprises an air jet through a vapor phase component reducing means source, the air jetting and reducing means being directed to the holding means coated wrapping paper. The method according to claim 1. 13. The method according to claim 1, wherein the vapor phase component reducing means and the holding means are applied to the underside of the wrapping paper as the wrapping paper is fed through the filter making machine. . 14. A method of manufacturing a filter element for reducing vapor phase components, the method comprising supplying a filter medium and a wrapping paper for the filter medium to a means for winding the filter medium of a filter making machine, The wrapping paper comprises a portion that holds the vapor phase component reducing means, which portion is longitudinally spaced along the length of the wrapping paper, and the method further comprises forming a filter rod. A method comprising wrapping the filter media with the wrapping paper and cutting the filter media rod at the location of the gap between the longitudinally spaced portions holding the vapor phase component reducing means. . 15. The method according to claim 14, wherein the portion holding the vapor phase component reducing means is provided on the wrapping paper while the wrapping paper is supplied from the wrapping paper supply means to the filter making machine. 16. Method according to claim 14 or 15, characterized in that the filter making machine is a cigarette smoke filter making machine. 17. The method of claim 14, 15 or 16 wherein the filter maker produces a single filter media furnace rod. 18. A filter element capable of reducing the vapor phase component of cigarette smoke, comprising a wrapping paper produced by the method according to any one of claims 1 to 13. 19. A filter element for reducing the vapor phase constituents of cigarette smoke produced by the method according to claim 14. 20. The filter element according to claim 18, wherein the filter element is ventilated near the end adjacent to the tobacco rod. 21. A filter element having a central portion having an annular portion of vapor phase component reducing means, the reducing means being located between ends where the annular portion is absent. Or the filter element according to 20.