DE1010895B - Filter plugs for cigarettes and process for their manufacture - Google Patents

Description

The main patent 853 720 relates to a filter plug for cigarettes, the one core made of filter material, an inner one, the. Core surrounding sleeve from relatively stiff paper with a lengthwise butt joint and an outer sleeve made of thinner paper, which surrounds the inner sleeve in the same length and which in the longitudinal direction has an overlapping seam.

Furthermore, a method for producing such a filter plug is described in the main patent, after which the width of the stiff paper strip is dimensioned so that it is in a funnel guide to the said inner sleeve can be shaped, furthermore the width of the thinner paper strip is chosen so that it is in the funnel guide to the called outer sleeve forms.

In the method according to the main patent, one side of the stiff paper strip is on which the strand made of filter material comes to rest, at least partially coated with adhesive, before she comes into contact with this.

In the further development of this inventive concept, it has proven to be useful that an adhesive on the entire outer surface of the butt jointed inner sleeve or on the larger part the same, or on the entire inner surface of the outer sleeve with the overlapping seam or on the larger part of the same, or applied to the two surfaces entirely or on their larger part will.

After the improved. Procedures can use filter plugs that the deformation a larger. Oppose resistance as a filter plug, in which no adhesive is provided between the inner and outer sleeves.

The adhesive between the inner and outer sleeves is preferably a thermosetting adhesive, with a such an adhesive has the advantage of greater rigidity and is usually waterproof.

According to a further characteristic of the invention, the filter material, instead of in a continuous strip as in the case of the continuous sliver of cotton wool, as it was described in the above-mentioned main patent, the funnel guide is a succession of short plugs, for example made of cotton wool or cotton plugs, or short lengths of crepe paper rods , with the creping in the longitudinal direction of the rod, the short plugs corresponding to those of the individual filter plugs for individual cigarettes or a multiple of the individual filter plugs,

Other types of filter material than cotton or crepe paper can also be used, e.g. B. other vegetable fibers, mineral vegetable filter plugs for cigarettes
and method of making it

Addition to patent 853 720

Applicant:
Cigarette Components Limited, London

Representative: Dipl.-Ing. R. Holzer, patent attorney,
Augsburg, Philippine-Welser-Str. 14th

Claimed priority:
Great Britain 31 December 1952

Hugo Bunzl and Paul Schechner, London,
have been named as inventors

Fiber material, such as. B. asbestos, animal fibers, rayon and other synthetic fibers, materials made of plastic foam and the like the rod can then be subdivided in order to obtain filter attachments with known tubular extensions, so ¹ that mouthpieces for cigarettes are formed, which partly consist of filter plugs and partly of a hollow tube at the mouth end of the cigarette. The lengths of the filter plug portion and the hollow tube portion of the mouthpieces can be varied; for example, a 15 mm long mouthpiece can consist of a 12 mm long filter plug and a 3 mm long hollow tube or a 10 mm long filter plug and a 5 mm long hollow tube; a. 11 mm long mouthpiece can consist of an 8 mm long filter plug and a 3 mm long hollow tube or a 7 mm long filter plug and a 4 mm long hollow tube, etc.

Furthermore, short plug from two or more different types of in a known manner Filter material on the strips of relatively stiff material in alternating succession can be applied to allow the simultaneous creation of optional shapes of filter plugs.

709 549/110

3 4

It is also possible to stick pieces of filter material of various types to form the longitudinal seam.

The adhesive layer 22 as well as a layer 27 (Fig. 5

set or to bring into contact with each other, so and 6) from by, the device 13 applied

that when the structure produced is subsequently under- glue will be hardened and dried by the divides, one filter plug, or filter 5 resulting continuous filter plug rod

plug along with mouthpieces, which are made up of more by an electrically operated heating device 28,

exist as a kind of filter material. which at the required hardening temperature

Embodiments of the invention are now drawn up. The two strips 10

more than an example with reference to the schematic and 21 as well as the sliver 15 are known in table drawings. It shows io way through the set by means of a flexible

Figure 1 is a view, partly in section, partly drawn of tape 29 covering the outside of the strip

in elevation, of a machine for forming the invented 21 (see Fig. 5) wraps. Instead of the sliver

properly trained. Filter plug elements., 15 you can also use a continuous crepe paper

using the filter material as a continuous strip, with the creping in the is fed, 15 is located in the longitudinal direction of the rod.

Fig. 2 is a view, partly in section and partly through the heating device 28 leaving In elevation, a machine for shaping the filter plug rod is not going through here filter plug elements shaped according to the invention, means shown cut into individual lengths, wherein the filter material in a sequence which to a packaging room or to a short plug is fed., 20 cigarette making machine are conveyed.

Fig. 3 is a plan view of the shown in Fig. 2. Figs. 2 and 4 and 6 and 7 show how a Machine, strip. 10 made of relatively stiff paper, the Fig. 4 is an elevation of an individual part of the glue application in front of Fig. 2 and 3 machine shown in a larger direction 13 and in the set 14 ge-scale, · 35 is drawn. Similarly, the strip 21 5 shows a cross section through a pre-formed according to the invention from cigarette paper on the moistening device Filter plug element, added and attached to the underside of the strip 10 ge-Fig. 6 shows a longitudinal section through such a device, the adhesive layer 22 being located between the Filter plug element, and both strips are located.

Fig. 7 shows a section along the line 7-7 in Fig. 6, _3o the filter material, which is in the form of short but on a larger scale. Plug is located, for example, to a cylindrical shape ge-In the illustrated in Figs. Machine rolled crepe paper, is fed into a funnel 30, the means for driving the various parts of which the individual lengths are not shown by one of the machine, but its shaking chute 31 of a rotating disk 32 order is assumed to be known. ₃₅ (Fig. 3) are supplied. Each of the individual Pfrop-Tn Figs. 1 and 5 is shown how a fen is enclosed in a sleeve 33 (Fig. 7) made of cigarette paper with strips 10 of relatively stiff paper, such as an overlapped longitudinal seam, so that, for. B. parchment paper, from a supply roll 11 whose outer surface is smooth. The upper upper pulled, and a stretching device 12 and surface of the rotating disc is also smooth, with the result that the _{application wheel of a glue applicator 40;} individual plug is drawn radially towards 13 into a set 14. Immediately thrown against a stationary wall 34 on the outside, a sliver 15 made of wadding will be removed from one another. The radially outermost supply roll 16 is pulled off and placed on the surface of the plug through a nose 35 from the disc upper run of an endless belt 17, which is removed and pulls the fiber sliver under the wheels 18, 19 and 20 with the front ends through a . 45 tubular guide directed downwards. Both the belt 17 runs in a slot of the upper surface of rotating rollers prevent 37 (Fig. 3) that Einder machine, and the wheels 18, 19 and 20 press _ze] ne grafting of the chute 31 directly into the Fühauf the sliver 15 or this on the belt 17, _tion 36 go without touching the wall 34; they, in turn, through the walls of the slot, also prevent clogging of the mouth by being bent into a U-shaped cross-section. ₅₀ lengths, which extend broadly to the mouth. This turns the sliver into a strand of.

shaped approximately circular cross-section. At the same time Dj _e . Delivery quantity of the individual plug to the

a strip 21 of thinner paper, e.g. B. tubular guide 36 is sufficient to the

Cigarette paper, one of which is to keep one side filled with a layer of guide. From. go to the lead

22 moistenable adhesive is coated, from one 55 the individual plugs in radial bores on the

Supply roll 23 withdrawn, with the start of a rotating part wheel 38 with adhesive, which the same

covered side via an initial drilling device 24, in turn, in slots on the circumference of a rotating "

pulled and placed on the underside of the strip 10, wheel 39 feeds, the individual plug in the

when this enters the set 14, the slots being held by a negative pressure,

Adhesive layer is located between the two strips. 60 which is created through the holes 40 in the wheel

In the set 14, the strip 10 is around the will. The holes in the wheel 39 can lead to the

Wadding fiber tape 15 bent until the two edges be inclined in the radial direction in order to deliver the

of the former meet and a stump seam 10 α individual. Plugs from the holes to the _:

(Fig. 5) form. The strip of cigarette paper 21 will facilitate slits in the wheel 39; The lower end r

wrapped around the strip 10, one edge 21 α 65 of the circumference of the wheel 39 touching the band 10, and ^:

protruding more or less radially upwards because here the opening of each slot through the: ■■.

remains, afterwards a moistening wheel 25 and a tape is closed with it, the vacuum is created by the '' *

cooperating pressure wheel 26 touches, whereupon corresponding hole 40 is canceled, so 5 .;

the part 21 α then lowered through the set, that the length in question on the strip 10 off- § £

is pressed to one by overlap and 70 is applied. In the described arrangement, Jl

Claims (6)

several plugs, thrown at random into the funnel 30, successively fed to the top of the strip 10, the individual plugs being the same distance apart and lying with their longitudinal axes parallel to the length of the strip 10. The plugs are held to the strip 10 by the adhesive 27 'which has been applied to the top of the strip 10 by the device 13. The distances between each. Plugs are based on the distances by which the slots on the circumference of the wheel 39 are spaced from one another. Exactly as in the machine shown in Fig. 1, the strip 10 in. The set is bent around the spaced plugs of filter material until its two edges meet to form the butt seam 10a. The strip of cigarette paper. 21 is wrapped around the strip 10, the adhesive layer 22 being located between the two strips and a longitudinal overlap seam being formed. After passing through the heating device 28, the continuous filter plug rod is cut into lengths which are conveyed to a packaging room or to a cigarette making machine. . In the two machines shown, the adhesive layer 22 is applied to one side of the strip 21; however, it can also be applied to the associated side of the strip 10 or to the opposing sides of the two strips - 10 and 21. Patent to s ρ κ r cη ε: 35 1. Filter plug for cigarettes, consisting of a core made of filter material, an inner one Sleeve made of relatively stiff paper, which surrounds the core, and in the longitudinal direction a has butt seam, an outer sleeve made of thinner paper that the inner sleeve, in. same Length as the inner sleeve surrounds and which has an overlapping seam in the longitudinal direction, according to patent 853 720, characterized in that between the inner and the outer. Sleeve one Adhesive layer is arranged, which extends over the all or over the greater part of the outer surface of the inner sleeve and the inner Surface of the outer. Sleeve extends. 2. Filter plug according to claim 1, characterized in that that the core made of filter material is shorter than the inner and outer sleeves. 3. Filter plug according to claim 1 or 2, characterized in that the core. a, is us filter material of an inner sleeve, of the same length as the core, wrapped and this sleeve has a longitudinally extending, overlapping ¹ suture. 4. Process for the manufacture of filter plugs for cigarettes ,, according to claims 1 to 3, in which at the same time filter material, a strip of relatively stiff paper and a strip of thinner paper fed to a funnel guide the width of the stiff paper strip is dimensioned so that it is in the funnel guide is formed into an inner sleeve, which holds the cut piece or strand of the Surrounds filter material and has a butt seam running in the longitudinal direction, and the thinner paper strip in the funnel guide to an outer one. Sleeve is molded. That surrounds the sleeve with the tamped seam and has an overlapping seam in the longitudinal direction, characterized in that adhesive is applied to the entire outer surface of the inner sleeve Stampfer seam or on the, larger part of it, or on the whole inner surface of the outer one Sleeve with the overlapping, seam or on the larger one. Part of the same, or on both of these Surfaces, completely or on their larger part, is applied. 5. The method according to claim 4, characterized in that, ß the filter material of the funnel guide is supplied in the form of a succession of sections of a strand. 6. The method according to claim 5, characterized in, that every single section of the filter material is covered by an innermost sleeve (33) of the same length and with one in the longitudinal direction extending overlapping seam is wrapped. Considered publications: 1 sheet of drawings © 709549/110 6.