DE102021132864A1 - Recycling connection flange for vacuum cleaner bags and method of manufacture - Google Patents

Abstract

The aim of the present invention is to provide a completely biological connection flange based on natural stabilized waste from juice, beer and wine production, often also called pomace, in particular using other residues that are as natural as possible as binders and/or fillers. The device for recycling fruit waste (3) from the pressing process consists of a feed (7) arranged one behind the other for the components pomace granules (3) and industrial ash (5) and a mixing unit (8). After the mixer (8), an application unit (9), a vibrating unit (10), a pre-press (11), the press (12), cooling (13), coating (14) and the output (15) are provided.Am Mixer (8) can also be provided with a feed for hot air and inert gas (16) into the mixture (4). In addition, when the mixture (4) is fed into the mold (9), it can already be shaken to immediately compress it to influence. The mold (9) can also be additionally cooled during pressing (12). The process is an automatic continuous process in the subsequent process steps of supplying (7) the components, mixing in the mixer (8), applying to the molds (9), shaking (10), pre-compacting in the pre-press (11), pressing (12), cooling (13), coating (14) and output (15).

Description

The present invention relates to a connecting flange for a vacuum cleaner bag made entirely of recycling material, which is suitable for use for dust filter bags made of both filter paper and spun-bonded plastic, and the manufacturing process for the recycling material therefor.

For reasons of effectiveness, these vacuum cleaner bags are increasingly made of fully synthetic material on online machines instead of being glued from paper and cardboard in a two-stage production with cardboard flanges. To do this, two multi-layer webs of spunbonded plastic are pulled off rolls and brought together, welded longitudinally and transversely using ultrasound and cut to length. Roll width and cut give the bag volume. Beforehand, the connection flange is placed on the upper web and ultrasonically welded or glued on. The dust entry hole is punched out and the protruding material forms the seal for the suction port. The connection flanges for this are made entirely of plastic for the purpose of ultrasonic welding or of cardboard, as in paper-cardboard production.

According to the state of the art, connecting flanges for dust filter bags are made of plastic by injection molding using the 1K or 2K method and punched out of solid cardboard with and without a seal. These are attached to the dust filter bag using an adhesive method (dispersion or hot-melt adhesive) or ultrasonic welding. The connection flanges hold and position the dust filter bags in the vacuum cleaner. They are usually provided with a closure of the suction hole for dust-free disposal after use.

Connection flanges are also known which can accommodate replaceable filters so that the flange can be used several times. There are also universal connection flanges on the market, for example made of cardboard, which can be cut to fit the mount, which can also usually hold a filter using adhesive technology.

DE 100 43 981 A1 shows a fastening device for a universal dust filter bag. Here the carrier disc (connecting flange) can be changed or adjusted.

DE 198 58 832.1 shows a universal dust collector with an adapter plate as a connection flange.

Document G 90 01 538.2 shows a double-layer connection plate made of cardboard.

Also DE 10 2004 030 346 A1 shows an adapter plate as a connection flange to the vacuum cleaner, which can be coupled to a base plate on the dust bag.

DE 20 2006 016 789 U1 / EP 1 917 897 B1 show a connecting flange with a roller blind closure for the dust inlet made of plastic.

DE 20 2006 017 084 U1 proves a connecting flange made of cardboard with seal and closure as well as its manufacture.

DE 10 2008 037 409 A1 and DE 10 2010 038 113 A1 show a dust chamber in the vacuum cleaner with a holder for a connecting flange.

DE 10 2011 122 358 A1 and 20 2011 109 849 U1 show a connection plate on a filter as a connection flange, which has a closing opening (dust entry hole).

DE 10 2015 103 515 and EP 3 066 968 B1 show a dust filter with a welded connection plate.

In Scripture DE 10 2013 106 236 A1 an insulation material is described, which should be soundproof and heat-insulating and made from a material mixture of stabilized fruit waste according to DE 10 2014 100 032.3 , lime, water and vinyl-based material and is heat resistant.

The protective writings DE 10 2014 100 032.3 , PCT/IB2014/003242 , 50 2014 010 681.2 , EP 3 089 592 B1 and WO 2015/101838A1 show a method for stabilizing fruit residues from pressing processing. This represents the state of the art for the stabilization of fruit waste.

The aim of the present invention is to provide a completely biological connection flange based on natural stabilized waste from juice, beer and wine production, often also called pomace, in particular using other residues that are as natural as possible as binders and/or fillers.

The special feature of the invention is that the material for the connection flanges is based entirely on waste, thus expanding the recycling cycle.

According to the state of the art, it is known that fruit waste from pressing processing, also known as pomace, can be stabilized using various suitable methods in order to then grind it to a defined grain size. For stabilization are chemical, thermal and / or biological cal processes and combinations thereof are known which convert the dangerous compounds in fruit waste into permanently harmless compounds. Further processing requires such a stabilization.

According to the invention, it is intended to produce recycling plates in the form of connecting flanges according to the required contours, which are based on a high degree of grinding (low grain size) of the stabilized fruit waste as pomace granules.

To produce molded parts, the ground fruit waste is mixed with harmless fillers, preferably industrial ash, as fillers and binders. These additives serve several functions. The originally ph-acidic granules of the fruit waste are provided with the appropriate quantity of additives until ph-neutrality or a slight alkalinity is achieved. The industrial ash stabilizes the mechanical strength of the product and at the same time prevents the product from becoming wet (packaging). The slight basicity has a germ-reducing effect. During the forming process, the pressing of the flange, the lime content of the ash lubricates the die and stabilizes the internal strength of the flange. This can reduce the amount of material used.

The pomace material is dried and granulated in an upstream process for stabilization, as is usual for other known applications. In this state, the pomace granules still contain some moisture, the so-called residual or equilibrium moisture. That's around 12 to 18%. This residual moisture is released during the molding process. After the admixture of classified industrial ash and the setting of the mixing ratio found to be suitable, the pomace granulate is encased by the ash particles. Between the individual Treser granules, the mixture contains other fine ash particles.

A measured quantity of the starting material/mixture is placed in a mold. A press, preferably a hydraulic press, presses this material together into the final shape. Both the form, the form base and the press stamp can map further contours of the required flange. During this pressing, the pressed part heats up in the mold. The pressing force and the pressing time are selected in such a way that the residual water in the granulate escapes during pressing and reacts with the basic parts of the ash particles. The well-known hydraulic process is at least partially imitated; if necessary, pre-pressing for shaping in the press tool can also take place. Heat, sensibly up to just under 100 degrees C, promotes and accelerates the manufacturing process. At the same time, at least part of the lignin is released during this process, the process releases heat of reaction. The usual lime content in the ash binds the sulfur in the lignin. The fine parts of the ash and the pomace granules are connected by the adhesive effect of the lignin, the cells interlock. In order to maintain the strength of the connecting flange, it is advantageous if the flange is given a water-repellent layer if it is subsequently stored in a too humid environment to make it more difficult for moisture to penetrate, because water can dissolve the lignin compounds again. All individual components and the final product are either biodegradable or recyclable. The flanges are produced by pouring the mixed material into the molds without producing any waste. Any minor production waste during production can be composted.

The usual seal / sealing lip of the connection flange is also inserted into the pressing tool and is thus connected to the flange in a form-fitting and non-positive manner. In another embodiment, part of the connection flange is contoured as a sealing ring and is created during the primary forming process. These products are disposable and are therefore shaped and functionalized for this purpose. If the molded seal is long enough, it can be pleated similar to bottle caps. When placed in the vacuum cleaner, the folds are stretched as far as possible and seal. For disposal, the pre-formed pleats are folded up and turned towards the inside of the rod pouch, similar to a sleeve liner. This seals sufficiently for disposal.

In a possible step, the dust bag can already be integrated during pressing.

The manufacture is carried out on a suitable press using female molds.

In the process described below, power plant ash and leftovers from the pressing of fruit, so-called marc, are combined and combined in such a way that a full-value product is created. This process and of course the end products should meet economic and technical criteria.

The power plant ashes from large plants meet the requirements with regard to their intended use in the process. In particular, according to current reports, they are non-toxic and do not contain any toxic or other problematic components. The same applies to the currently non-recyclable residual components of the PE. These components affect the properties in Ver drive and the end product are not or are negligible.

As described below, a wide variety of properties for effective thermal protection, sound insulation, even fire protection, etc. can be set. By varying the properties and proportions of the two starting materials, density, volume proportions and geometries can be freely adjusted over a wide spectrum. The temperature of the materials and tools during processing has a significant influence.

The preparation of the combination process consists in the detailed selection of the two materials. For this purpose, the ash is classified. This means that the ash, which is available in different grain sizes, is divided into fractions using classic methods. After stabilization and grinding, pomace from the pressing of fruit and the like is added as pomace granules (granules) and the lignin contained therein is used as a binding agent by pressing.

• - 50% bis 95% Volumenanteile Asche unterschiedlicher, aber produktbestimmender Körnung
• - 5% bis 50% Volumenanteile Trester-Granulat.

According to the invention, the mixture consists of the following parts:

• - 50% to 95% by volume ash of different, but product-determining granulation
• - 5% to 50% by volume pomace granules.

In one version of the process, the two components are mixed to form a mix and can also be preheated to speed up the process.

If, instead of hot air, inert gas flows against the particles (ash, pomace granules) during the production of the mixed material, the material also has a fire-retardant effect due to the enclosed gas.

The mixture then reaches an application device and is introduced into a mold, preferably several molds, with a uniform thickness. Preferably, the molds with the desired dimensions/contours in terms of length and width and the height of the molds determine the fill level and thus the thickness of the later connection flange. The molds as well as the press stamp can also depict the desired contours. The filled molds are vibrated for better distribution and pre-compaction. Other shapes and molded parts as well as plates can also be produced.

If necessary, the filled molds are further compacted by light pressure in a further work step before they are finally strongly pressed in the following step in a time window of 5 to 30 seconds, preferably 10 seconds. The pressing force is 30 to 80 t, preferably 50 t. The exact pressing force depends on the size of the component and the degree of compaction.

The molds are preferably equipped with ejectors so that the pressed parts/flanges are ejected from the mold after the final pressing process. These molds are advantageously cooled to speed up the manufacturing process.

The pressed and ejected flanges are then further cooled and fed to a collection container or magazine.

Before delivery, they can be subjected to coating and drying to prevent the ingress of water, which dissolves the lignin compounds. This is necessary at least when manufacturing other durable products that come into contact with water or water vapor or high humidity.

With the invention, cost-saving production and more efficient recycling become possible.

For example, panels and shapes with a wide variety of properties can be produced, such as for heat/sound insulation, cladding, for assembly as printed circuit boards, flanges, seals, components, molded parts, etc., porous drains for drainage can also be produced. Nevertheless, these are suitable for plates and/or molded parts for use as vibration dampers.

Diverse mechanical processing in the sense of shape changes can be carried out. The components can be glued together.

Dust bags are usually disposed of with household waste and incinerated. This does not change anything, only the life cycle of pomace and ash is extended with the connection flange according to the invention. The flange burns, leaving toxic-free ash.

• 1 einen Ausschnitt eines Querschnittes des erfindungsgemäßen Anschlussflansches,
• 2a einen Anschlussflansch in Draufsicht,
• 2b einen Anschlussflansch in Schnittdarstellung und
• 3 die Darstellung der Verfahrensschritte und notwendiger Vorrichtungen zur Herstellung des Anschlussflansches.

The invention described above is explained in more detail below using an exemplary embodiment for a connecting flange and an exemplary embodiment of the method and the device. show:

• 1 a section of a cross section of the connection flange according to the invention,
• 2a a connecting flange in top view,
• 2 B a connecting flange in sectional view and
• 3 the representation of the process steps and necessary devices for the production of the connection flange.

The 1 shows a single-layer cut plate of a connection flange 1 with the fillers as a mixture 4, the ground and stabilized fruit residues 3, shown in spherical and oval shape, and the binder 6 consisting of a composite of ash 5 with escaped lignin as a mixture.

The 2a shows a pressed connecting flange 1 according to the invention with an integrated seal 2. The seal 2 is placed in the mold 9 before it is filled with the pressing material/mixture 4 and is also pressed. During the pressing process, the emerging lignin binds the pomace granules 3 with the ash 5 as a binding agent, to which the seal adheres. This connection flange 1 with seal 2 is 2 B shown in section.

The process steps and the necessary devices for producing the connecting flanges 1 are in 3 shown in principle and are as follows. First, the stabilized and ground pomace granules 3 and the ash 5 are dosed via a feed 7 to a mixing unit 8 and homogeneously mixed in it. It can be pre-heated to 100 degrees C during mixing to accelerate the process or flame-retarded with inert gas 16. For process-related reasons, lignin 17 can also be added to the mix 4, pomace granules 3 and binding agent 6, consisting of a mixture of ash 5 and lignin, in order to ensure binding if the amount of pomace granules 3 is too small, for example. The well-mixed material to be mixed 4 then reaches an application 9. Here, preferably several molds 9 are filled to the brim. If necessary, the molds 9 are shaken in a further step in a shaker 10 or simultaneously during filling. The mixture 4 can then be pressed lightly in the molds 9 if necessary, this is a pre-pressing 11. The pressing process 12 then takes place over a defined period of time, so that the lignin can escape from the fruit residues 3 due to the inherent heat and pressure of the process. To speed up the process, the molds 9 can then be subjected to cooling 13 . The molds 9 have an ejector and deliver the pressed connecting flange 1 to the subsequent cooling 13 . After cooling has taken place, the flanges 1 are dimensionally stable and are conveyed through an output 15 into a magazine or collecting container or are fed to consumption by linking them to other machines. To prevent the connection flanges 1 from absorbing moisture, a coating 14 with integrated drying can also be provided in the process before the output 15, because water can dissolve the lignin compounds.

Reference List

1

connection flange

2

poetry

3

Ground and stabilized fruit residues, pomace granules

4

mix, mix

5

ash

6

Binder (ash-lignin mixture)

7

feeding

8th

mixer, mixing aggregate

9

order, forms

10

shaker

11

pre-pressing

12

pressing

13

cooling

14

Coating with drying

15

Output to magazine or collection container

16

inert gas supply

17

Additional lignin supply

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 10043981 A1 [0005]
• DE 198588321 [0006]
• DE 102004030346 A1 [0008]
• DE 202006016789 U1 [0009]
• EP 1917897 B1 [0009]
• DE 202006017084 U1 [0010]
• DE 102008037409 A1 [0011]
• DE 102010038113 A1 [0011]
• DE 102011122358 A1 [0012]
• DE 202011109849 U1 [0012]
• EN 102015103515 [0013]
• EP 3066968 B1 [0013]
• DE 102013106236 A1 [0014]
• DE 1020141000323 [0014, 0015]
• EP 3089592 B1 [0015]
• WO 2015101838 A1 [0015]

Non-patent Literature Cited

• PCT/IB2014/003242 [0015]
• 50 2014 010 681.2 [0015]

Claims (10)

Connection flange (1) preferably for vacuum cleaner bags consisting of a homogeneous mixture of recyclable organic waste, characterized in that the mixture (4) consists of 5% to 50% by volume of ground and stabilized fruit residues (3) from pressing processing, also as marc granules (3) known and 50% to 95% by volume of the filler industrial ash (5) consists. Connection flange (1) according to claim 1 , characterized in that the mixture (4) consists of industrial ash (5), pomace granules (3) and, in addition, the natural binding agent lignin. Connection flange (1) according to claim 1 and 2 , characterized in that the natural binding agent lignin is released from the pomace granules (3) in the process or is additionally added as a lignin supply (17). Device for producing connection flanges (1). claim 1 until 3 characterized in that the device consists of a series of units arranged one behind the other, one or more feeds (7) for providing the materials required for the manufacturing process, a mixer (8), an application (9), a vibrator (10), a Pre-pressing (11), a pressing (12), a cooling (13), a coating with drying (14) and an output (15) of the connecting flanges z. B. to a magazine or collection container. Process for the production of connecting flanges (1) according to claim 1 until 3 and according to the device claim 4 , characterized in that the stabilized and ground pomace granules (3) and the ash (5) are metered via a feed (7) to a mixing unit (8) and mixed homogeneously in this unit, after which the well-mixed mixed material (4) in an order (9), preferably in molds (9), if necessary, the molds (9) are shaken in a further step in a shaker (10) or simultaneously during filling. After that, the mixture (4) can be lightly pressed in the molds (9) as a pre-press (11), if necessary, then the pressing process (12) takes place over a defined period of time, so that the lignin is extracted from the fruit residues ( 3) can escape and connect with the ash (5), then the molds (9) can be subjected to cooling (13) or the molds (9) use an ejector to pass the pressed connecting flange (1) to the subsequent cooling (13 ) from and after cooling, an output (15) takes place in a magazine or collecting container. procedure after claim 5 , characterized in that during mixing in the mixer (8) to accelerate the process, the mixed material (4) is preheated to 100 degrees C or flameproofed with inert gas 16. procedure after claim 5 and 6 , characterized in that lignin 17 is additionally added to the material to be mixed (4) during mixing in the mixer (8). procedure after claim 5 until 7 , characterized in that a coating 14 with integrated drying is provided in the course of the process before the output 15. procedure after claim 5 until 8th , characterized in that in the pressing step (12) the mixture (4) is subjected to a pressing pressure of 30 to 80 t, preferably 50 t, in a time window of 5 to 30 seconds, preferably 10 seconds. Method according to any of the preceding Claims 5 until 9 , characterized in that the mixture of fruit pomace (3) in different grain sizes and industrial ash (5) with subsequent different levels of pressure (12) and / or by prior shaking (10) of the mixed material (4) to different densities of the mixed material ( 4) leads to different mechanical properties and strengths and can be adjusted via them.

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