KR830002130B1 - Manufacturing method of filter cigarette - Google Patents

Abstract

No content.

Description

Manufacturing method of filter cigarette

1 is a side schematic view of a cigarette filter manufacturing apparatus.

2 is an enlarged plan view of the wrapping paper viewed in the direction of arrow A of FIG.

3 is an enlarged plan view of a covering strip seen in the direction of an arrow B of FIG.

4 is a side view of a tobacco filter strand made with the apparatus of FIG.

5 is a cross-sectional view taken along the line V-V of FIG.

6 shows a first embodiment of an apparatus for applying an adhesive to a wrapping paper.

7 shows a second embodiment of an apparatus for applying an adhesive to a wrapping paper.

8 shows a third embodiment of an apparatus for applying an adhesive to a wrapping paper.

9 to 11 are perspective views of modifications of the coating ribs formed on the coating roller of FIG.

12 is a plan view of a wrapping paper coated with an adhesive in a manner different from that of FIG.

FIG. 13 is a perspective view of an apparatus for applying an adhesive as shown in FIG. 12. FIG.

14 is a side view of a part of the filter cigarette produced according to the present invention.

FIG. 15 is an enlarged plan view of the connection point used in FIG. 14. FIG.

16 to 20 are views showing, in some cross-section, the sides of variants of filter cigarettes made in accordance with the present invention.

The present invention relates to a method of making a filter cigarette by connecting a filter made by wrapping the filter element in a porous wrapping paper to a tobacco part with a porous connecting paper.

The drawback of the known method of making such a filter cigarette is that in the wrapping paper and the connecting paper, the adhesive is evenly applied to the entire inner surface of the finished filter cigarette, so that most of the porous portions of the wrapping paper and the connecting paper are clogged with the adhesive, so that the air permeability is extremely high. In addition to deterioration, it is impossible to accurately maintain the content of components remaining in the tobacco smoke passing through the filter because the air permeability varies greatly from cigarette to cigarette.

An object of the present invention is to prevent the smoker from feeling the difference in the smoke component for any two cigarettes by making the content of the smoke passed through the cigarette is not significantly different for each cigarette.

The object of the present invention is to apply an adhesive in the form of a line on the wrapping paper and the connecting paper, and even if the coated wrapping paper and the connecting paper are superimposed along the longitudinal direction of the filter element, the adhesive line on the wrapping paper and the adhesive line on the connecting paper overlap or This can be achieved by always crossing at an angle or at an angle so that they are not arranged side by side.

Therefore, using the method of the present invention, the filter element may be placed anywhere on the wrapping paper and bonded, and in particular, the relative arrangement of the wrapping paper and the connecting paper may be used to equalize the content of smoke components between the finished filter cigarettes. You don't have to worry about it. This is a novel feature of the present invention that has never been possible until now.

Preferably, the spacing between the lines of adhesive applied along the wrapper is constant.

In order to maintain complete adhesion, the adhesive is applied on the wrapping paper and the connecting paper in the form of a line at an oblique angle with respect to the longitudinal direction, and the observation line is drawn at right angles to the longitudinal direction at any point of the wrapping paper and the connecting paper. It is advantageous to have at least three points of adhesion along the observation line.

As a simple method, in the case of wrapping paper, the adhesive line is used at an angle of 45 ° with respect to the longitudinal direction of the wrapping paper. In the case of connecting paper, the bonding line is at an angle of 90 ° to the adhesive line of the wrapping paper. You can use what you have.

It is advisable to make the spacing between the bond lines at least three times the width of the bond lines to ensure the best adhesion and to leave as much as possible the absence of adhesive on the wrapping paper and the connecting paper.

The adhesive must be applied in the form of dashed lines to leave no adhesive present on more packaging or connecting paper.

Of course, the adhesive may be applied in the form of a plurality of curves on the wrapping paper or the connecting paper, in particular in the form of a sinusoidal curve arranged in parallel.

Referring to the accompanying drawings with respect to the present invention will be described in detail as follows.

As shown in FIG. 1, the filter elements 1 made of cellulose or acetate are aligned at regular intervals in the axial direction and advanced in the direction of the arrow 3.

The filter elements 1, which are fed at regular intervals in this axial direction, are placed on a wrapping paper 4 which is continuously fed at the same time, guided by a guide member, and arranged to circulate simultaneously with the wrapping paper over the wrapping paper 4; The pressure belt 5 is moved forward with the wrapper 4 with its relative position fixed. As can be seen from FIG. 2, the filter element side surface of the wrapping paper 4 is coated with a heat soluble adhesive such as a thermoplastic or "hot melt" material so that the wrapping paper 4 and the filter element 1 are transferred to the heating device 6. As soon as they are transported the filter elements 1 are fixed on the wrapper 4 so that the relative spacing between them does not change. In order to do this, the heating device 6 is pressed from the bottom of the wrapping paper 4. When the wrapping paper 4 is stopped, it is arranged so that the heating device 6 can be removed so as not to burn. The wrapping paper 4 passing through the heating device 6 is led to the cooling device 7 to solidify the melted adhesive on the wrapping paper 4 so that the filter element 1 is fixed on the wrapping paper.

The wrapping paper 4 on which the filter element 1 is fixed is conveyed to an endless conveyor belt 8 and thus passed around the filter element 1 while passing through a two-part forming apparatus 9. It is wound around leaving about 3-4mm of filling port. In this way, the filter element 1 surrounded by the wrapping paper 4 is passed by the conveyor belt 8 through the second heating device 10 and the second cooling device 11 surrounding the upper half of the filter element 1. It is fixed to the wrapping paper 4 accurately and securely.

In this way a filter strand consisting of a filter element and a wrapping paper is conveyed by a conveyor belt 8 to a filling device 12 as detailed in Swiss Patent Application No. 15905/75 and each filter element 1. Particle filtration materials such as activated carbon are filled in the space 13 formed between them. In order to increase the filling amount of the particulate filtration material in the space 13, the downward outlet side of the storage container 14 coupled to the filling device 12 is the edge of the wrapper 4 and the filter element 1 exposed therebetween. It is connected to the suction device (15) through a sliding member that is tightly supported around the periphery.

The evacuated space 13 thus receives particulate filtration material under the outlet of the storage vessel 14. As can be seen in FIG. 1, the reservoir 14 is connected to the two reservoirs 18 and 19 by a conduit 16 and a meter 17 to receive two different types of particulate filtration material. .

After the space 13 is filled with particulate filtration material, the particulate filtration material remaining on both edges of the wrapping paper and around the filter element exposed between them is removed by the suction device 20 so that the surface portion thereof is not dirty.

Downstream of the suction device 20 a sealing strip 21 which is slightly wider than the filling opening of the space 13 is supplied over the filling opening and applied onto the sealing strip 21 as shown in FIG. The adhesive is melted by the heating device 22 to adhere to both edges of the wrapper 4 and the perimeter of the filter element 1 exposed therebetween. When the sealing strip 21 is stopped, the heating device 22 is installed so that the sealing strip 21 can be removed from the sealing strip 21.

The filter strip heated by covering the sealing band 21 is sent to the cooling device 23 so that the melted adhesive on the sealing band 21 solidifies.

After passing through the cooling device, the filter strands are sent to the cutter 24 and cut into four or six times the length of the filter of a cigarette. This is later cut into a single filter 48.

The wrapping paper 4 used in the method of the present invention is a highly porous paper, as shown in FIG. 2, in which the adhesive line is spaced at regular intervals with the adhesive at an angle α of 45 ° in the longitudinal direction of the wrapping paper. The spacing (a), in addition to application in the form of, shall be at least three points of adhesion along the line when a line (d or e) is drawn at any point on the package orthogonal to the longitudinal direction of the package. Let this exist. This makes it possible to reliably adhere the wrapping paper 4 to the periphery of the filter element 1 without significantly reducing the air permeability of the wrapping paper 4 and at the same time the wrapping paper is cut at any point. Since it is firmly adhered to 1), there is no fear of destroying the filter when connecting the filter to the tobacco part.

Preferably, the spacing a between the lines 25 of the adhesive is at least three times its width b.

As shown in the right side of FIG. 2, the adhesive strip is applied to the sealing strip 21 in the form of a line 25 in the same manner as the wrapping paper 4. In order to prevent the particulate filtration material from leaking out of the space 13 closed by the sealing strip 21, the edges of the sealing strip 21 should also be applied in the form of lines 27 and 28 in the longitudinal direction.

Some aspects of the finished filter string are shown in FIG. 4, and the adhesive lines not visible from the outside are shown in dashed lines. 5 is a cross-sectional view taken along the line V-V of FIG.

The adhesive may be applied on the wrapping paper 4 and the sealing strip 21 directly on the cigarette filter manufacturing apparatus of FIG. 1, or may be applied in advance and then stored in the reel form on the filter manufacturing apparatus for use. .

6, 7 and 8 show an example of an apparatus for applying an adhesive to the wrapping paper 4 and the sealing strip 21.

In the apparatus shown in FIG. 6, an adhesive is applied to the wrapping paper 4 in the same way as the printing ink is delivered in a letter-press operation. This adhesive is supplied to the adhesive transfer roller 30 by the wide and long nozzle of the adhesive supply device 29 and then transferred to the adhesive transfer protrusion 31 of the application roller 32. A contact roller 33 is disposed opposite the application roller 32 so that the wrapping paper 4 is sandwiched between these two rollers so that the adhesive is applied in the form of a line 25. In this apparatus, the hot melt adhesive is supplied to the adhesive supply device 29 by folding. The amount of adhesive can be adjusted by sliding the adhesive supply device 29 in the direction of the arrow 34 with respect to the surface of the roller 30.

In the apparatus shown in FIG. 7, the adhesive supply apparatus supported on both edges 35 and 36 of the application roller 32 in the same manner as the printing ink is transferred in the intaglio printing process. The adhesive is applied to the wrapping paper 4 by causing the adhesive to be supplied from the 29 into the grooves 37 of the application roller 32 and then to be transferred to the surface of the wrapping paper 4. The amount of adhesive so delivered is determined by the depth of the groove 37. The hot melt adhesive is supplied to the adhesive supply 29 by pressure.

In the apparatus shown in FIG. 8 a thermoplastic adhesive, such as polyvinyl acetate, is contained in the reservoir 38. The feed roller 39 is brought into close contact with the front of the container 38 to supply the adhesive of the container 38 to the transfer roller 30. As shown in FIG. 9, a groove 41 is formed in the transfer surface 40 of the adhesive transfer protrusion 31 to improve the supply action of the adhesive to the wrapping paper 4.

The adhesive transfer protrusion 31 is separated into a plurality of protrusions 43 by the grooves 42 (see FIG. 10), and the adhesive is applied in the form of dotted lines as shown on the right side of FIG. As shown in the figure, the transfer protrusion may be formed and applied in the form of a dot.

In FIG. 12, the adhesive is continuously applied on the wrapping paper 4 in the form of a wrapped curve. An apparatus for applying an adhesive in this manner is schematically shown in FIG. While continuously moving the wrapping paper in the direction of the arrow (C), the application device 45 having the adhesive discharge nozzle 44 and connected to the adhesive supply device is reciprocated in a direction perpendicular to the longitudinal direction of the wrapping paper so that the adhesive It is applied onto the wrapping paper in the form of a sign curve 25. The spacing between the nozzles 44 should be such that at any point in the treated wrapper 4 there are at least three adhesive spots along the line when the observation line is drawn at right angles to the longitudinal direction of the wrapper.

14 is a side view of a filter cigarette prepared according to the present invention. The filter 46 is connected to the tobacco portion 48 by the connecting paper 47. When the adhesive is applied to the connecting sheet 47, the connecting sheet 47 is allowed to intersect at an angle or at a right angle to the crossing line 25 made of the adhesive on the wrapping paper 4. No matter how superimposed and arranged on the wrapping paper 4, the area of the portion where no adhesive is present on the wrapping paper 4 and the connecting paper 47 should always be the same so that the air permeability of the filter portion of each cigarette is the same.

Referring to FIG. 15, it can be seen that the adhesive line 49 of the connecting sheet 47 is applied at right angles to the adhesive line 25 of the wrapping paper 4 of FIG. In this case, the adhesive strip 55 is also formed on the corner 54 of the connecting paper 47 so that the edge 54 is bonded onto the corner 53 when the cigarette is completed.

16 to 20 are views showing various states of intersection between the adhesive line 25 on the wrapping paper and the adhesive line 49 on the connecting paper.

Claims (1)

The adhesive is applied to the porous wrapping paper 4 along the first adhesive line 25 in a predetermined direction, and the filter element 1 is wrapped with the porous wrapping paper 4 to form a filter 46, and the filter In the method for producing a filter cigarette for connecting the tobacco part 48 with the porous connecting paper 47, the adhesive is applied to the porous connecting paper 47 along the second adhesive line 49 in the direction arranged in advance, Preparation of filter cigarettes, characterized in that the directions of the two adhesive lines 49, 25 form a predetermined angle so as to intersect or orthogonal to each other irrespective of the relative displacement of the wrapping paper 4 and the connecting paper 47 with respect to the longitudinal direction. Way.

Images