DE19544790A1 - Disposable vacuum cleaner dust bag - Google Patents

Abstract

The disposable dust bag, for use in a domestic vacuum cleaner, is of a flexible wall material which is processed to filter out and collect particles which trigger allergic reactions, through differences in pressure between the inner and outer zones of the bag. The bag wall material has an active layer (36), with the required air flow resistance and ability to trap the particles. The layer contains microfibres (40), with a diameter of about 1.0 mu m, as continuous fibres, staple fibres, bonded together at their intersections, preferably of polypropylene. The carrier layer (38) is a spun bond nonwoven of polypropylene fibres (44).

Description

The invention relates to a disposable vacuum cleaner bag, best hend at least partially from flexible bag wall material and suitable for detachable installation in the air flow path a vacuum cleaner, in particular household vacuum cleaner, wherein this vacuum cleaner bag due to the way it is made used flexible bag wall material and the applied Processing and connection technology is suitable, the in Allow airflow to pass through, and nor paint to catch house dust transported by the air flow gen and collect.

An increasing number of people suffer from a so-called called house dust allergy caused by excretions of the house dust mite is triggered. The excretions of house dust mite break down into small particles containing allergens, in also called allergens, with a size of about 0.5-2 µm, which are then suspended in the air Can trigger house dust allergy.

To complaints from house dust allergy as much as possible To avoid Lich, an attempt must be made to establish contact with the Avoid allergens and also excretions or excretion small particles in the respective surrounding area rich to eliminate. Many allergy sufferers therefore do without for example on carpets or carpets, since in use of common vacuum cleaners and conventional vacuum cleaners the small waste particles in the vacuum cleaner or not are held back only incompletely and by the Exhaust air from the vacuum cleaner is blown off into the ambient air the.  

Conventional vacuum cleaner bags, usually made of paper are made, namely, for the small waste highly permeable and can often even Dust mites that are about 0.1-0.3 mm in size sen, not hold back.

The small excretions are so when vacuuming with usual vacuum cleaners and vacuum cleaner bags in essence Chen only whirled up, so that the complaints of the allergy sufferer tend to increase. Vacuuming turns the house dust ball The house dust allergy may even be essential promoted, since the excretion of the house dust mite to Partly due to the vacuuming to the small particles or the suspended particles disintegrate. Rugs or carpets leaving it uncleaned can, however, for hygienic reasons not be endorsed.

Attempts have been made to train vacuum cleaners so that the number of the released allergy-producing small particles becomes. One went the obvious way, the Vacuum cleaner bag to connect a so-called "microfilter", which holds back the allergy-producing small particles. Man has the separation of the house dust on the one hand and the allergy-producing small particles, on the other hand, to two in Row lying components of the vacuum cleaner distributed from the First of all, convincing considerations that one is on this way the sensitive microfilter is not the Danger of premature ineffectiveness due to the action exposes to ordinary house dust. One is from the white Considered that the user of the vacuum cleaner gers in a household inhabited by people allergic to dust is ready to provide two filter elements and at Be may exchange. One has because of the urgent pro the fight against house dust allergies technical Disadvantage of installing two filter components and he difficult handling for the user. One has in view of this problem also accepted that  both filter elements pass through the entire air flow have to let and that thereby necessarily an enlarger pressure drop occurred and the vacuum cleaner output increased had to become.

In contrast, according to the invention the use of a way Werfstaubsaugerbeutels proposed, the flexible Beu telwand material and its processing and connection technology be chosen so that allergy-generated by the bag itself filtered small particles from the air flow and in the Bags can be collected.

The idea of the invention appears in comparison to the previous one approach of connecting a house in series dust-collecting vacuum cleaner bags and one of these therefore switched microfilters at first glance usually and technically difficult because you have the microfilterma material of exposure to the much coarser house exposes dust and therefore with a shorter lifespan or Expected service life.

However, it was recognized by the inventors that through the Using a bi-functional, i.e. H. both a house dust as well as allergy-producing small particles, Vacuum cleaner bags also for capturing allergy products the small particles have a large surface, namely under um the entire surface of the bag would be available can pose, so that the feared premature ineffectiveness that of the microfilter component despite their constant activity can be avoided with house dust.

In the inventive design of a flexible Vacuum cleaner bag has the advantage that after previous approach to increased air flow Flow resistance can be avoided by taking the air though only flow through one vacuum cleaner bag must leave.  

When we talk about house dust in the present context, it is particularly dusty with dust particles in the Order of magnitude down to 0.3 mm, possibly down to thought to be 0.1 mm. You have it in the usual vacuum cleaner technology so far considered quite acceptable when dust suctioned down reliably down to this particle size could. This ensured that the view dust could be removed.

If we are talking about particle size here, it is so because the greatest linear expansion of the respective particles meant.

For normal vacuum cleaners with conventional vacuum cleaners which particles collect down to 0.3 mm or 0.1 mm of course, a small proportion of the allergy-producing small particles, in particular then when these settle on larger dust particles gen. However, it was not possible with conventional vacuuming shake a noticeable reduction in allergy-producing Particles in the air emerging from the vacuum cleaner pass. Rather, one had to get used to the appearance that there is a risk of whirling up, especially when vacuuming this particle existed. If according to the invention of this is that an essential part of allergy-producing small Particles from the air flow through the vacuum cleaner bag should be filtered and collected, it means that return at least 90% of the allergy-producing small particles held and collected, regardless of whether these are free in floating in the air or on other large dust particles cling to.

A noticeable reduction in the risk of allergy will occur after Proposed invention reached when the allergy produce the small particles at normal operating pressure differences between between the interior and the exterior of the respective bag except for a balance of less than 10%, preferably less  less than 5%, preferably less than 1%, withheld and total be melted.

It has been shown that these figures are valid regardless of the extent of textiles or such allergy-producing small particles also in the air available. When a room is heavily loaded with everything Small particles can generate a multiple vacuum action, if necessary after activation of sinking periods, be considered.

Knowing the average size of the small particles critical for allergy sufferers according to another way of looking at the invention, this can also be formulated in such a way that the vacuum cleaner bag is able to contain particles due to the flexible bag material and the processing technology used
a size of 10 µm,
in particular a size of 5 µm,
more specifically a size of 2 µm,
more specifically a size of 1 µm,
even more specifically a size of 0.5 µm
except for a remainder of
at most 10%,
preferably at most 5%, most preferably at most 1%
(the percentages in each case based on the number of particles).

It should be noted that each of the particle size values depends assigned to the% values of the retained particle number can be. It is of course optimal if particles up to down to a size of 0.5 µm except for a remainder of maximum at least 1% can be withheld. For price reasons at the design of the vacuum cleaner and in the manufacture of the Bags will also be satisfied with compromises ben, for example up to a compromise, accordingly  Small particles on the order of 10 µm except for a remainder be held back by 10%.

When talking about processing and connection technology is, it should be said in particular that also at et waigen seams of the bag and at connection points where the bag tel is used in the respective air flow path, no excessive leakage of allergy-producing small particles may occur. Because these connection points and seam areas but as a rule hardly any weight in terms of area compared to the wall areas on the bag side is the seam Education and connection technology generally uncritical.

It has been shown that the handling and the price acceptable disposable vacuum cleaner bags can be used in which the bag wall material has an air passage Flow resistance has a corresponding at room temperature flow volume measured of approx. 100 liters air / min, preferably about 200 liters of air / min, at one flow area of approx. 20 cm² and a pressure difference of approx. 2.0 mbar, and on the other hand the bag wall material at Room temperature and at a pressure difference of 0.5 mbar (5th mm water column) a retention capacity for small particles of the Has a size of approx. 0.1 µm of at least approx. 80%.

The bag wall material can be one or more layers poses. It is necessary that the bag wall material of the Vacuum cleaner bags s at least one for air flow wi the state and responsible for the particle capture activity active layer. Is this active layer strong? not enough to meet the demands of manufacturing and ge need to withstand, so more layers can be omitted be tested. Results in terms of achieving the Air permeability on the one hand and with regard to the gefor retention properties for small particles of others on the one hand an active layer, which during production and is not sufficiently stable during use, so there is  the possibility of the active layer with one or more To combine carrier layers, which was discussed later will.

It has been shown that the active Layer can use so-called microfibers, in particular are synthetic fibers, e.g. B. made of polypropylene cross many times within the active layer and thereby Pores result in a smallness that is suitable for allergy sufferers retain small particles that produce. The microfibers can e.g. B. with a diameter of the order of 1 micron be filtered. Such microfibers can be conventionally by extrusion of a melt from the finest nozzles and, if necessary, gain through subsequent stretching.

Basically, the active layer can be made from both open-end fibers (practically endless fiber length) or from ge produce cut staple fibers. Particularly preferred for the production of the active layer is microfibers made of Po lypropylene. Polypropylene is relatively low Melting point and is therefore in terms of below Connection technology to be discussed advantageous.

In order to achieve a de To achieve a defined average pore fineness, that the microfibers at least in part of the intersection points can be connected.

The microfibers can be crossed at their crossing points by An melt, glue or chemical dissolving be bound. Preferred is the melting technique that deals with Polypropylene microfibers can be carried out relatively easily.

The active layer is preferably in a prefabricated form, for example from the role. This is necessary nimble that the active layer already during processing is manageable while maintaining its layer structure. To egg  on the other hand, there is sufficient porosity for the air flow received, but on the other hand sufficient handling To ensure the active layer, it is recommended that the Microfibers in miniature areas within the layer area are exclusively or increasingly connected to each other. It then there is a field of stabilizing miniature surfaces chen; on the other hand, there are areas next to these miniature areas areas in which the fibers are not or only ge are slightly melted, so that there is an undisturbed Porosity exists. Between the stabilizing miniature surfaces The microfibers form bridge areas in which they not at all, or only slightly, at intersection points ben, but still through the neighboring fused cross are relatively immovable, so that there the pore fineness under the static and dy maintain the air pressure within the bag remains and there are no breakthroughs, through which larger ones than the approved small particles can pass through nen.

It is basically conceivable to use microfibers and stronger fibers to mix in an active layer to make one on the one hand the stability of the active layer and on the other hand the Ensure retention of small particles. It is but also possible to improve manageability and the active layer to reduce the risk of perforation to rest against a backing layer.

When designing the carrier layer, it comes into consideration for the presence of the active layer, not for the back lasting ability for small particles. Therefore it is possible that the carrier layer has a much lower air flow flow resistance and a much lower retention ability for the small particles than the active layer. The carrier layer is preferably closed with the active layer connected at least in certain areas, so that the multi-layer dimension overall material can be handled easily, in particular  in the manufacture of the bag and in the handling of the Bag.

Also when connecting the active layer and the carrier layer you will have to take care that the applied connection technology which is essentially based on the active Layer-based restraint is not affected and on the other hand the air permeability is not too strong is restricted. Therefore it is recommended that the carrier layer with the active layer in line or point shaped miniature surface areas exclusively or ver is stronger connected.

These miniature surface areas can, for example, by Calendering between a smooth cylinder roll and one Counter roller with small miniature areas Surveys are made. This manufacturing technique is also when connecting the microfibers within the active Layer applicable. At least two of the rollers are used at least brought the one to a temperature sufficient in order to pass the material through the Nip heating ensures the fusion bond to reach.

Basically, the same applies to the composite carrier layer and active layer that this by fusion or dissolving or adhesive is produced. In the case of dissolving or Kle a solvent or an adhesive in the form of smallest aerosol-like droplets on the respective material apply.

To find a useful compromise between mechanical stabilizers on the one hand, perforation security, permeable to air on the other hand and retention of small particles at To get third parties, it is recommended that the grid of the line-shaped or point-shaped miniature surface areas between the carrier layer and the active layer is coarser  as a possible rasterization of the miniature surface areas inside half of the active layer and / or within the carrier layer.

The carrier layer can, for example, from an open-end Fa servlies (spunbond). This spunbond will be preferably also before connection to the active layer educated and down from the role with that of the Role coming active layer united. You can do that at the or possibly more than two layers away from the roll through a calender which, as already indicated above, with at least one smooth cylindrical roller and a front Jumping roller can be performed. If the Grids in the active layer and / or in the carrier layer are dimensioned accordingly, so no one is required special consideration for the registration between the Layers to meet the requirements of stability, air permeability and retention of small particles to reach.

It is recommended with regard to the connection technology between carrier layer and active layer, the two layers using fibers that connect to each other easily make a fusion. For this reason is recommended, especially if the active layer made of polypropylene-based microfibers, including the Trä layer at least containing polypropylene fibers to manufacture. The polypropylene fibers of the Trä titer have a much larger titer than that Microfibers of the active layer.

The carrier layer can have a weight per unit area of approximately 20 g / m 2 to sit. This basis weight is sufficient for. B. when using Polypropylene fibers to ensure sufficient stability surrender. When designing the carrier layer you get there to ensure that statistically the crossing points of the Carrier layer fibers are close enough to each other  sufficient microfibers in between provide sufficient support give and their selective destruction when they occur to prevent the overpressure in the bag. You have it in the Hand, given the basis weight of the carrier material appropriate dimensioning of the titer of the carrier material fibers set the distance of the crossing points.

When dimensioning the titer of the carrier layer fibers one gets also towards the flexibility of the bag in the finished state have to pay attention. On the one hand, the bag material should be stiff enough be to pack a dimensionally stable flat bag and consu to be able to handle on the ment side. On the other hand, the Softness of the bag material should be so great that it is when installed in the respective vacuum cleaner housing not as too bulky. Flexibility according to the Flexibi lity of a cloth material is acceptable. In this together it is of interest that by ironing in folds the Flat shape of the bag for packaging and handling purposes can be ensured.

When manufacturing the bag by someone other than welding technology will be taken care of with the lowest possible Ge velvet seam length to get by, so no unwanted through entry points for allergy-producing small particles in each case to preserve the seam area. With the smallest overall length one comes out when the bag is through a longitudinal seam closed jacket part and at least one by folding End wall formed integrally attached to the jacket part having.

Basically, the bottom part can also be sewn on be welded. The folding technique of packaging bags is different but preferred, because with this folding technique with one Minimum of cut parts gets what is desired. The Seams can be welded, glued, loosened or sewn hen be formed. It is also possible to use the jacket part of a  Bag at one end simply through a transverse seam or to be closed by sewing an envelope.

On one end wall of the bag you can have a connector attach, for example in the form of a stiff paper or Cardboard cut, with the appropriate provision of Creases in the bag material for storage or for Shipping shall be laid flat on the flat bag can. This cut, which is also replaced by a ring can have a hole with an inner diameter to Pushing through a connection piece, if necessary with mediation a membrane.

The invention further relates to a vacuum cleaner, especially household vacuum cleaners, with a fan holding air flow path and one in the air flow path the flexible vacuum cleaner bag, which air passage ge equips and retains normal household dust. It is According to the invention provided that the interior of the vacuum cleaner gerbeutels and the preceding one under pressure existing air flow path are designed such that they al Filter out energy-generating small particles from the air flow and collect.

For the formation of the bag, all the information applies made above for the construction of the optimal bag have been. The bag is preferably interchangeable.

The accompanying figures explain the invention with reference to Embodiments; it represents:

Figure 1 shows the principle of a household vacuum cleaner in a first embodiment.

Figure 2 shows the principle of a household vacuum cleaner in a second embodiment.

Fig. 3 shows a flexible vacuum cleaner bag for use in a vacuum cleaner according to Fig. 1 or 2 and

Fig. 4 shows a section corresponding to A of Fig. 3, is an exploded view of the different layers of the bag wall material of the vacuum cleaner bag.

In Fig. 1, the fan of a vacuum cleaner with 10 is designated net. This fan lies in an air flow path 12 , which consists of sections 12 a, 12 b, 12 c and 12 d. From the section 12 a connects via a hose 13 to a vacuum cleaner mouthpiece 14 . The section 12 b is formed as a box that receives a flexible vacuum cleaner bag 16 .

For this purpose, the box 12 b is provided with a lid 18 which can be removed for the introduction of the vacuum cleaner bag 16. The lid 18 is verbun with a connection piece 20 to, on the one hand connects to the tubing 13 and at the other hand, protrudes into the box b 12th The connecting piece 20 penetrates an end wall 22 of the bag 16 which is plugged onto it.

The fan sucks in ambient air through the mouthpiece 14 and the hose 13 . The sucked air penetrates into the bag 16 and passes through the flexible bag walls. This air is then taken up by the box 12 b and passes through the blower 10 to an exhaust port 12 d, through which the air cleaned of dust can escape into the surrounding atmosphere. That of the air in the vacuum cleaner bag 16 eingetra gene dust is collected within the bag sixteenth The Beu tel 16 is renewed from time to time.

In Fig. 3, a vacuum cleaner bag 16 is shown schematically in the form of a folding bag, which has the folded shape of a coffee bag, for example. This bag is delivered to the user in a flat form. The folds serving to lay flat are indicated schematically at 24 . The bag is formed from a one-piece material blank, which is closed along a jacket seam 26 to form a hose. The end walls 22 (see also FIG. 1) and 30 are closed using conventional folding box or folding bag technology. On the end wall 22 , a connector 32 made of cardboard or stiff paper is welded or glued. The connecting part 32 and the end wall 22 are penetrated by a connection hole 34, if necessary with a sealing membrane, which is put up tightly on the connecting piece 20 .

In Fig. 4, the material area A from Fig. 3 is shown explosions tig. This material area consists of three layers, namely an active layer 36 and two carrier layers 38 which rest on both sides of the active layer 36 in the unassembled state. The active layer 36 is formed by polypropylene fibers 40 , which can be open-end spun and laid endlessly, but which can also be staple fibers. The continuous fibers 40 are so-called melt-blown microfibers made of polypropylene with a diameter of the order of 1 μm and form a filter layer. The microfibers have been consolidated into layer 36 by a calendering treatment. The initially non-bonded non-woven fabric was passed between two rollers, at least one of which was heated to the melting temperature of the polypropylene fibers.

One of the rollers is provided with raised warts, while the other of the rollers is smooth. By the interaction of the smooth and the warmed rollers, discrete melting zone areas 42 have been created, in which the superimposed, intersecting microfibers 40 are fused together, so that between the discrete melting areas 42, the fibers intersect each other and in a statistical distribution Passages are formed through the active layer 36 .

The carrier layers 38 are formed from polypropylene continuous fibers 44 , which have been laid out of the melting nozzle to form a thread fleece. These continuous fibers are laid to form a spunbond fleece. The spunbond fleece is solidified by discrete melting zones 46 , in which in turn the fibers are welded or fused together at their crossing points. The three layers 36 and 38 are united with one another. For the union again two rollers were used, one smooth and the other with raised warts. At least one of the rollers is heated to the melting temperature of the polypropylene fibers. The rollers press the three layers 36 and 38 together in the melting areas 48 , so that the three layers have been welded together.

Basically only one of the two carrier layers 38 is necessary. This is then, based on the bag according to FIG. 3, preferably the outer layer. The microfibers of the active layer 36 and the fibers of the two carrier layers 38 consist of 100% polypropylene. The carrier layers 38 each have a weight of approximately 20 g / m 2. The qm weight of the active layer 36 is significantly lower.

To measure the air permeability, the following was carried out: The interconnected three layers 36 , 38 are clamped in a clamping frame, which encloses an area of 20 cm² and to which an air flow channel is connected on both sides. The absolute value of the pressure in one air flow channel was set to a reference pressure of 1013 mbar by a regulated fan and in the other air flow channel to a lower value deviating from the reference pressure. The pressure difference was 20 mbar. A flow meter was connected to one of the air flow channels to determine the total value of the air flow. The flow rate measured was about 200 liters / min at a temperature of 20 ° C., averaging over 10 minutes.

To determine the permeability of the composite layer for small particles, the procedure can be as follows: A composite layer consisting of layers 36 and 38 is installed in a flow channel. In the flow channel upstream and downstream of the composite layer, a measuring section of defined length and cross section is provided. The test sections are identical to one another and made of transparent material. The test sections are located on both sides of the composite material in an area of calmed air flow. In the upstream flow channel section small particles with a size of 0.1 microns (largest linear dimension) are introduced so that they flow almost uniformly over their entire cross-section when flowing through the test section and assume the speed of the air flowing there. The downstream test section is spaced so far from the composite layer that a calmed flow also takes place in it and the small particles in it are distributed almost uniformly over the entire cross-section and assume a speed corresponding to the air flow rate. Scattered light measurements are carried out in the two test sections in order to obtain a measure of the number of small particles present in the respective test section. The scattered light intensities are measured in optically identical measuring devices and compared with one another by forming quotients.

It was found that the scattered light intensity in the current downstream test track less than 20% of the scattered light intensity in the upstream test section. From it could one concludes that the particle number downstream of the ver only less than 20% of the particle number in the upstream test section, the filtering effect The composite layer was therefore greater than 80%. Under analogous measurement conditions resulted for the particles with a Size of about 1.0 µm a filtering efficiency in the Of the order of 99%.

FIG. 2 shows that the vacuum cleaner bag 116 can also be arranged downstream of the blower 110 . From the guide die according to Fig. 1, therefore, to be preferred, because the pressurized part of the air flow path is shortened ver 12 and therefore the risk is reduced of particles sweeping leakage currents.

The bag materials used according to the invention can basically also be used for vacuum cleaners whom it is not primarily due to the reluctance of Al allergen arrives. One can with an appropriate setting of the Particle impermeability on, for example, usual house dust by using the preferred according to the invention Use provided bag material then the advantage air permeability and thus the advantage get along with lower installed capacities. Also this idea is to be protected within the scope of the invention.

Claims (35)

1. Disposable vacuum cleaner bag, consisting at least in part of flexible bag wall material (A) and suitable for releasable installation in the air flow path ( 12 ) of a vacuum cleaner, in particular household vacuum cleaner, this vacuum cleaner bag ( 16 ) due to the flexible bag wall material (A) used for its production and the Applied processing and connection technology is suitable to allow the air flow to pass through in the vacuum cleaning operation and to collect and collect normal house dust transported by the air flow, characterized by the use of a flexible bag wall material (A) and a processing and connection technology , which make it possible to filter out and collect a substantial proportion of small particles in warm-blooded animals, in particular humans, which cause all gic reactions, hereinafter called "allergy-producing small particles", from the air stream. 2. Disposable vacuum cleaner bag according to claim 1, characterized in that it is suitable, the allergy-producing small parts chen from the air flow at usual operating pressure differences between the interior and the exterior of the bag ( 16 ) except for a remainder (expressed in number of%) of less than 10%, preferably less than 5%, most preferably less than 1%, to withhold and collect. 3. Disposable vacuum cleaner bag, consisting at least in part of flexible bag wall material (A) and suitable for releasable installation in the air flow path ( 12 ) of a vacuum cleaner, in particular household vacuum cleaner, which vacuum cleaner bag ( 16 ) due to the flexible bag wall material (A) used for its manufacture and the Applied processing and connection technology is suitable to let the air flow occurring in the vacuum cleaning operation and to capture and collect normal house dust transported by the air flow, in particular according to one of claims 1 and 2, characterized in that it is due to the flexible bag wall material used ( A) and the applied processing and connection technology is able to use particles
a size of 10 µm,
in particular a size of 5 µm,
more specifically a size of 2 µm,
more specifically a size of 1 µm,
even more specifically a size of 0.5 µm
except for a remainder of
at most 10%,
preferably at most 5%,
most preferably at most 1%
(the percentages in each case based on the number of particles). 4. Disposable vacuum cleaner bag according to one of claims 1-3, characterized, that the bag wall material (A) of the vacuum cleaner bag has an air flow resistance corresponding to one flow volume measured at room temperature of approx. 100 liters of air / min, preferably about 200 liters of air / min, with a flow area of approx. 20 cm² and a Pressure difference of approx. 2.0 mbar. 5. Disposable vacuum cleaner bag according to one of claims 1-4, characterized in that the bag wall material (A) of the vacuum cleaner bag ( 16 ) at room temperature and at a pressure difference of 0.5 mbar (5 mm water column) a retention capacity for small particles of the size of approx. 0.1 µm of at least about 80%. 6. Disposable vacuum cleaner bag according to one of claims 1-5, characterized in that the bag wall material (A) of the vacuum cleaner bag has at least one active layer ( 36 ) responsible for the air flow resistance and for the particle trapping activity. 7. Disposable vacuum cleaner bag according to claim 6, characterized in that the active layer ( 36 ) contains microfibers ( 40 ). 8. Disposable vacuum cleaner bag according to claim 7, characterized in that the active layer ( 36 ) contains microfibers ( 40 ) with a diameter of the order of 1.0 µm. 9. Disposable vacuum cleaner bag according to claim 7 or 8, characterized in that the microfibers ( 49 ) are open-end fibers (endless fibers). 10. Disposable vacuum cleaner bag according to claim 7 or 8, characterized, that the microfibers are staple fibers. 11. Disposable vacuum cleaner bag according to one of claims 7-9, characterized in that the microfibers ( 40 ) are polypropylene fibers. 12. Disposable vacuum cleaner bag according to one of claims 7-9, characterized in that the microfibers ( 40 ) are connected to one another at least at crossing points. 13. Disposable vacuum cleaner bag according to one of claims 7-12, characterized in that the microfibers ( 40 ) are connected to one another by melting, gluing or chemical dissolving. 14. Disposable vacuum cleaner bag according to one of claims 7-13, characterized in that the microfibers ( 40 ) in miniature areas ( 42 ) within the layer surface are exclusively or increasingly connected to one another. 15. Disposable vacuum cleaner bag according to one of claims 6-14, characterized in that the active layer ( 36 ) consists exclusively of microfiber. 16. Disposable vacuum cleaner bag according to one of claims 6-15, characterized in that the active layer ( 36 ) on at least one carrier layer ( 38 ) abuts. 17. Disposable vacuum cleaner bag according to claim 16, characterized in that the carrier layer ( 38 ) has a substantially lower air flow resistance and a significantly lower retention capacity for the small particles than the active layer ( 36 ). 18. Disposable vacuum cleaner bag according to claim 16 or 17, characterized in that the carrier layer ( 38 ) with the active layer ( 36 ) is at least partially connected. 19. Disposable vacuum cleaner bag according to claim 18, characterized in that the carrier layer with the active layer in line-shaped or point-shaped miniature surface areas ( 48 ) is connected exclusively or reinforced. 20. Disposable vacuum cleaner bag according to claim 19, characterized in that the connection between the carrier layer ( 38 ) and the active layer ( 36 ) is made by melting, gluing or dissolving. 21. Disposable vacuum cleaner bag according to claim 19 or 20, characterized in that the rasterization of the linear or punctiform miniature surface areas ( 48 ) between the carrier layer ( 38 ) and the active layer ( 36 ) is coarser than a possible rasterization of the miniature surface areas ( 42 , 46 ) within the active layer ( 36 ) and / or within the carrier layer ( 38 ). 22. Disposable vacuum cleaner bag according to one of claims 16-21, characterized in that the carrier layer ( 38 ) is formed from an open-end non-woven fabric (spun bond). 23. Disposable vacuum cleaner bag according to one of claims 16-22, characterized in that the carrier layer ( 38 ) is formed from polypropylene fibers ( 44 ). 24. Disposable vacuum cleaner bag according to one of claims 16-23, characterized in that the carrier layer ( 38 ) consists of fibers ( 44 ) which have a substantially larger diameter than fibers ( 40 ) of the active layer ( 36 ). 25. Disposable vacuum cleaner bag according to one of claims 16-24, characterized in that the carrier layer ( 38 ) has a weight per unit area of approximately 20 g / sqm. 26. Disposable vacuum cleaner bag according to one of claims 1-25, characterized, that the bag wall material (A) be flexible sits, which allows the bags to be placed flat keep and in working condition without risk of tearing inflate. 27. Disposable vacuum cleaner bag according to one of claims 1-26, characterized in that it is durable by flat folds ( 24 ). 28. Disposable vacuum cleaner bag according to one of claims 1-27, characterized in that the bag wall material (A) through seams ( 26 ), in particular special welded or glued seams, is processed into the bag. 29. Disposable vacuum cleaner bag according to one of claims 1-28, characterized in that it has a jacket part closed by a longitudinal seam ( 26 ) and at least one end wall ( 22 , 30 ) formed by folding and integrally attached to the jacket part. 30. Disposable vacuum cleaner bag according to one of claims 1-29, characterized in that it is designed in the region of an end wall ( 22 ) with a connection part ( 32 ) for connection to the air flow path ( 12 ) of the vacuum cleaner. 31. Disposable vacuum cleaner bag according to claim 30, characterized in that the connecting part ( 32 ) is made of strong paper or cardboard. 32. Disposable vacuum cleaner bag according to claim 30 or 31, characterized in that the connecting part ( 32 ) thanks to creases ( 24 ) of the bag material (A) against a wall surface of the bag material can be put on or put on. 33. Disposable vacuum cleaner bag according to one of claims 1-32, characterized, that it is a fill in form inflated by internal pressure volume of at least 1 liter, preferably at least 2 liters. 34. Vacuum cleaner, in particular a household vacuum cleaner, with ei nem a fan-containing air flow path (12) and a lying in the air flow path (12) flexible Staubsau gerbeutel (16), which air passage permitted and normal household dust retaining, in particular using a disposable vacuum cleaner bag according to any one of claims 1-33, characterized in that the interior of the vacuum cleaner bag ( 16 ) and the preceding pressurized air flow path ( 12 a, 13 ) are designed such that they filter out and collect all the small particles from the air flow that generate gas. 35. Disposable vacuum cleaner bags according to the preamble of the An saying 1, characterized, that the bag material is an active layer with a Contains microfiber content, possibly in conjunction with Training measures according to one of claims 8-33.