EP1965897A1

EP1965897A1 - Apparatus and process for forming an adhesive and/or sealant composition, adhesive and/or sealant composition produced in this way and adhesive-bonded substrates

Info

Publication number: EP1965897A1
Application number: EP06841591A
Authority: EP
Inventors: Reto Koch
Original assignee: Sika Technology AG
Current assignee: Sika Technology AG
Priority date: 2005-12-23
Filing date: 2006-12-22
Publication date: 2008-09-10
Also published as: WO2007074139A1; EP1800738A1; JP2009521304A

Abstract

The inventive apparatus (1) which serves to form an adhesive and/or sealant stream (AB) which comprises a main component (A) and at least one secondary component (B) has a vessel (4) which serves to guide the adhesive and/or sealant stream (AB), into which the main component and the secondary component (A; B) can be introduced under pressure and can be combined to give the adhesive and/or sealant stream (AB), which can be released from an exit nozzle (45) of the vessel (4). The invention provides a transfer element (2) which projects into the vessel (4) and has at least one feed channel (21, 210, 71) embedded therein and at least one end piece (3), through which the at least one secondary component (B) can be introduced into the vessel (4) such that it is taken up and completely surrounded by the stream of the main component (A) flowing through the vessel (4), and means (7, 9, 200) are provided, by means of which a rotation between the end piece (3) and the stream of the main component (A) can be realized during the formation of the adhesive and/or sealant stream (AB).

Description

DEVICE AND METHOD FOR FORMING AN ADHESIVE AND / OR

DENSITY MATERIAL, ADHESIVE AND / OR DENSITY MATERIAL MANUFACTURED, AND GLUED SUBSTRATES

Technical area

The invention relates to a device for forming a stream of a moisture-curing adhesive and / or sealant, which comprises a main component and at least one secondary component, as well as an adhesive and / or

Sealant, which was applied with the inventive device and connected by means of the adhesive and / or sealant substrates.

Adhesives and / or sealants which can be used are, for example, one-component moisture-curing prepolymers containing silane or isocyanate groups. These adhesives and / or sealants have the disadvantage that they cure only slowly and that the curing rate of the

Humidity of the environment depends, i. that they are in areas with deeper

Humidity or in closed systems almost does not harden. For example, water can accelerate hardening

Subcomponent be mixed via mixing systems in moisture-curing prepolymers. As mixing systems, for example, static mixers are used, which inter alia, the layered mixing a

Accelerator component in one-component adhesives serve. Such mixers have the disadvantage that when producing and applying

Adhesive beads often come to false bonds because one or more of the intermixed layers of a normally non-self-curing

Accelerator component or secondary component in the exterior of the Adhesive bead adjacent to the surface to be bonded, resulting in weak points in the adhesion.

A faster curing of the adhesive and / or sealant can be achieved by means of a dynamic mixer, by means of which a main component A and a minor component B are homogeneously mixed. When using the dynamic mixer, an undesired rapid curing of the component mixture can now take place. Furthermore, a relatively high drive power is often required for homogeneous mixing of the components A, B. It is also particularly important that the homogeneous mixing of the two components A, B at the contact points of substrates to be joined now the mixed product and no longer the main component A occurs. The adhesive and / or sealant flow is therefore no longer at the peripheral zones of the main component A, which is cured by means of the minor component B accelerated, but from the mixed product, which often has less advantageous material properties than the main component A itself. Unless the mixing is homogeneous, there is also the risk that the unmixed minor component B occurs at the contact points of the substrates to be joined. The mixing of the main component A with the minor component B is therefore avoided if only the main component A as adhesive and / or sealant and the minor component B is to serve merely as an accelerator.

Presentation of the invention

The present invention is therefore based on the object to provide a further improved device which is suitable for forming a consisting of a main and at least one minor component adhesive and / or sealant stream having a shorter reaction time and in which a contamination of the surface of Adhesive and / or sealant flow is avoided by the minor component. In particular, a simple structure and can be operated with little effort and maintainable device is provided, which allows easy application of an adhesive or sealant on a substrate surface, which cures quickly in areas with low humidity or in closed systems and thus is largely independent of humidity differences ,

According to the invention, this object is achieved by the features of the first claim. Further advantageous embodiments of the invention are specified in the subclaims.

The device according to the invention, which serves to form an adhesive and / or sealant stream comprising a main component and at least one minor component, has a container for guiding the adhesive and / or sealant stream, into which the main and secondary components are pressurized can be inserted and merged into the adhesive and / or sealant flow, which can be delivered from an outlet nozzle of the container.

According to the invention, a projecting into the container

Transfer element provided with at least one feed channel and at least one end piece embedded therein, through which the at least one minor component B is inserted into the container such that it is taken up by the current flowing through the container of the main component and completely enclosed, wherein means are provided by means which during the formation of the adhesive and / or sealant flow rotation between the tail and the flow of the main component can be realized.

On the basis of the device according to the invention, therefore, at least one secondary component B can be incorporated into a main component A in such a way that the secondary component B is completely encased by the main component A, and the secondary component B substantially does not coincide with the

Main component A is mixed. This leads to good adhesion of the adhesive or sealant on at least one substrate surface and prevents false bonds that would occur if minor component B partially contacted the substrate surface. In addition, the minor component B is incorporated into the main component A in the form of a cylindrical spiral or HeNx. The dimensions of the HeNx, such as the HeNx diameter, the loop spacing, the winding diameter can be determined by parameters that are fixed or optionally adjustable. The minor component B can therefore be stored decentralized in any density in the main component A. It is possible to store several helicic components of subcomponent B or other components that may have different dimensions individually.

Due to the incorporation of the minor component B or further components according to the invention, the resulting reaction processes between the individual components A, B,... Can therefore be set as desired. By means of a preferably provided control device, the component flows can be selectively controlled, for example, phased switched on or off, increased or reduced.

The curing rate of the inventive

Device applied adhesives or sealants can therefore be very high. Even in closed systems or in areas with low humidity and low temperatures, the complete curing of adhesive beads or seams is virtually independent of the humidity of the environment within a short time, for example, within a few hours, possible.

The device according to the invention also permits the rapid and safe processing of high modulus and ultrahigh modulus adhesives or sealants, i. adhesives or sealants with G-modulus greater than 2.5

MPa up to 50 MPa, which require a large amount of moisture to cure. The simple construction of the device according to the invention, which does not require a complicated metering and installation technique and does not require a mixer, is advantageous. The device can therefore be operated with low energy consumption and maintained with minimal effort.

In contrast to conventional gluing and application devices, accurate metering and mixing ratio is not essential and the system does not depend on the viscosity of the components used. Furthermore, the adhesive or sealant applied by the method according to the invention has a long open time despite rapid curing. Another advantage is that no or little blistering occurs when applied by the inventive device adhesive or sealant.

The inventive device can be realized in various advantageous embodiments.

In a first embodiment of the device, the transfer element is rotatably mounted and connected directly or via a possibly provided with a supply channel drive shaft with a drive motor. The transfer element can thereby be rotatably mounted about an axis or, for example by means of a ball joint, rotatable about a point.

In this first basic embodiment, the transfer element with low drive energy is rotatable within the container such that the

Outlet opening of the tail follows a circular path. Unless the

Outlet opening of the tail follows steadily in the same direction of the circular path and the main component A flows steadily through the container, which is preferably realized, the minor component B is stored in the form of a HeNx in the main component A, wherein the helix diameter through the

Distance of the outlet opening of the tail from the axis of rotation and the

Incline height or the pitch of HeNx through the

Rotational speed of the transfer element and the flow velocity of the Main component A is determined. The winding thickness of the HeNx is determined by the diameter of the outlet opening and the flow rates of the components A and B.

The storage of the transfer element by means of a ball joint allows a simple construction of the device and an advantageous supply of the components A and B. In particular, the supply of further components can be realized without difficulty.

In a second basic embodiment of the device is the

Container rotatably mounted and connected to a drive motor.

By rotating the container, the main component A can now be detected and rotated relative to the at least one end piece not held by the container, whereby the same effect as in the first embodiment of the device is achieved.

Alternatively, the rotatably supported container may be connected to the at least one end piece of the transfer element which, for example, projects perpendicularly or obliquely to the longitudinal axis of the container through the container wall into the interior of the container and is rotated with respect to the flow of the main component A, which in turn the same effect as in the first embodiment of the device is achieved. In order to avoid rotation of the main component A while the container is rotated, a stationary held guide member may be provided within the container along which the main component A is guided virtually linearly through the container.

In further embodiments, it is also possible to store both the container, as well as the tail independently rotatable and to rotate against each other or with different angular velocities. The choice of the first or second embodiment of the device is determined by the user-preferred storage devices, drive devices, and delivery devices for the components A, B, .... In the first basic embodiment, a simple storage and a simple drive of the transfer element result. If this is mounted by means of a ball joint, and the components A, B, ... are advantageously fed. In the second basic embodiment also result in advantageous ways to supply the components A, B, ....

Particularly advantageous is a third basic embodiment of

Device in which the tail and the container are held stationary and in the interior of the container with the container and / or with the transfer element connected internal thread or external thread is provided, along which the main component A and the adhesive and / or sealant flow AB through the container is transferable. The main component A is therefore rotated forward through the container in the manner of a screw, whereby at least one HeNx is impressed by means of one or more secondary components B.

Drive and bearing elements omitted in this third embodiment of the device, which is why the supply of the components A, B, ... is particularly simple. The dimensions of the HeNx are determined in this embodiment in particular by the geometry of the internal thread and / or the external thread.

The end piece through which the minor component B enters the container may be fixedly or adjustably connected to the transfer member so that its exit opening is positioned at a fixed or selectable location, spaced on the one hand from the axis of the container and on the other hand from the inner wall of the container is. In this case, the end piece can be aligned with its outlet opening in the direction of flow of the main component A, perpendicular thereto or in an intermediate angle. The tail can for example, bolted to the transfer element and fixed on a einjustierten height by means of a nut.

Due to the simple design of the device, this can be easily maintained. The device parts can be disassembled and cleaned quickly. To ensure proper operation even during the

To ensure operation of the device are preferably

Cleaning tools, hereafter called scrapers, integrated into the device. Preferably, at least one scraper connected to the container is provided, which is up to the outlet opening of the end piece in the

Interior of the container protrudes and this with each other

Rotation of the transfer element and the container in phases abstreift and / or closes.

If the scraper and the end piece are frontally adjacent to each other, the tail can not be adjusted toward the scraper to set a preferred position of the outlet opening. Only one position in a very small adjustment range can be set. Preferably, the scraper is therefore arranged displaced in the direction of flow of the main component A relative to the end piece, so that the end piece can be displaced parallel to the scraper or optionally adjusted. If the end piece provided with the outlet opening is, for example, angled in an L-shaped manner against the stripper, the outlet opening can be aligned with the stripper after each rotation of the end piece. By aligning and fixing the outlet opening after adjusting the end piece against the scraper, it is ensured that it is always cleaned during operation, regardless of the selected position.

The shape and nature of the optionally flexible scrapers can be chosen in various ways. For example, scrapers are selectable which the outlet opening of the tail by tips, edges, and or

Contact surfaces. For example, wipes a wedge-shaped wiper with its front edge with each revolution once over the outlet opening and frees them from deposits. It is possible to choose a scraper in which adjoins an edge of a cylinder segment surface, through which the outlet opening is closed in phases. When using such a scraper not only the tail is cleaned, but it also results in a HeNx with missing winding elements, which is advantageous for various applications. The minor component B is incorporated selectively or in segments in the main component A, whereby the effect of the minor component B changes accordingly. In addition, the strength of the emitted bead increases which is not fully penetrated by the HeNx.

The scraper may be provided on the inner wall of the container, whereby its applicability is limited. Preferably, therefore, provided with at least one scraper container segments are used, which can be combined with other container segments to form a container, preferably screwed.

In a further preferred embodiment, the transfer element and / or the container is provided with at least one guide element along which the main component A and the adhesive and / or sealant AB flow is guided in the container. In the first and second basic embodiment of the device grooves or grooves, for example, provided on the inner wall of the container, by means of which the viscous main component A is held. In the first embodiment of the device is thereby prevented that the main component A follows the rotation of the transfer element. On the other hand, in the second embodiment of the apparatus, the main component A is caused to be caught and rotated together with the container practically without slippage.

A central element of the inventive device is the

Transfer element which may be configured in one or more pieces and provided with one or more supply channels and end pieces, through which the Nebenkomponente B or other components are inserted into the container.

In a further preferred embodiment of the device, a control unit is provided, by means of which the flow of at least one of the components A, B, ... and / or the rotation between the tail and the flow of the main component A is adjustable.

The main component A and the minor component B can from storage containers preferably by means of a pump or hand press in the

Container or the supply channel of the device to be transported.

As a reservoir, for example, cartridges, hobbocks or barrels can be used. A device according to the invention can be applied, for example, to a cartridge outlet or to an outlet opening of an adhesive pump, preferably screwed on.

The device according to the invention is outstandingly suitable for producing an adhesive or sealant from a main component A and at least one secondary component B, in which the secondary component B is completely encased by the main component A.

In a further aspect, the present invention therefore relates to an adhesive or sealant AB, consisting of a main component A and at least one minor component B, which have been brought together by means of a device according to the invention.

The main component A of the adhesive and / or sealant preferably comprises at least one prepolymer having at least two moisture-reactive groups. The prepolymer may be crystalline or amorphous. The at least two moisture-reactive groups react with water to form a species which results in the crosslinking of two or more such groups. Preferred moisture-reactive groups are alkoxysilane and / or isocyanate groups. In a first embodiment, the prepolymer having at least two moisture-reactive groups is a polyurethane prepolymer having at least two isocyanate groups. It is derived from the reaction of a polyisocyanate with a compound having two or more NCO-reactive functional groups. Such NCO-reactive groups are in particular hydroxyl and primary or secondary amino groups.

A polyisocyanate contains two or more NCO groups and here describes a low molecular weight compound having a molecular weight of less than 1000 g / mol. Examples of such polyisocyanates are 2,4- and 2,6-

Tolylene diisocyanate (TDI) and any mixtures of these isomers, 4,4'-

Diphenylmethane diisocyanate (MDI), the positionally isomeric diphenylmethane diisocyanates, 1, 3- and 1, 4-phenylene diisocyanate, oligomers and

Polymers of the aforementioned isocyanates, as well as any mixtures of the aforementioned isocyanates. Particularly preferred as polyisocyanates are MDI and TDI.

As the compound having two or more NCO-reactive functional groups, in particular, polymeric compounds. Examples of such polymeric compounds are in particular polyols, preferably polyester polyols or polyether polyols, polyamines, or polyamino alcohols.

The preparation of the polyurethane prepolymers takes place in a known

Way directly from the polyisocyanates and the NCO-reactive

Compounds, such as the polyols, or by stepwise

Adduction methods, also known as chain extension reactions.

Particular preference is given to polyurethane prepolymers of polyols and polyisocyanates, in particular of diols, triols or diol / triol mixtures, and of diisocyanates, trisocyanates or diisocyanate / trisocyanate mixtures.

In a second embodiment, the prepolymer having at least two moisture-reactive groups is a prepolymer at least two alkoxysilane groups. The prepolymers having at least two alkoxysilane groups are prepared in a known manner.

In a third embodiment, the prepolymer having at least two moisture-reactive groups is a prepolymer having both alkoxysilane and isocyanate groups. such

Prepolymers are, for example, by the reaction of an isocyanate-functional polyurethane prepolymer with a silane which is an NCO-reactive

Group, said silane is substoichiometrically used with respect to the isocyanate groups of the polyurethane prepolymer.

Particularly preferred as a prepolymer having at least two moisture-reactive groups are polyurethane prepolymers having at least two isocyanate groups.

Depending on requirements, the main component A may further optionally contain non-reactive thermoplastic materials, such as homopolymers or copolymers of unsaturated monomers, especially selected from the group consisting of ethylene, propylene, (meth) acrylic acid and its esters, vinyl esters and vinyl alcohol. Particularly suitable copolymers are ethylene-vinyl acetate (EVA) and atactic atactic poly-α-olefins (APAO), polypropylene (PP) or polyethylene (PE). The main component A may comprise further fillers. As fillers, carbon black and chalks are preferred.

The minor component B of the adhesive or sealant to be applied preferably comprises at least water. In order to obtain a good incorporation of the water into the main component A, it is advantageous if the minor component B contains a carrier which increases the viscosity of the minor component B. The carrier material is advantageously an organic polymer having ionic groups. Such ionic groups are especially carboxylic acid group and / or sulfonic acid groups. On the one hand advantageous as such organic polymers are poly (meth) acrylic acids and copolymers of (meth) acrylic acids. Particularly advantageously, the support material is a polyurethane having at least one carboxylic acid group and / or sulfonic acid group. Particularly suitable as support materials are polyurethanes, for the synthesis of which carboxylic acid groups containing diols, in particular dimethylolpropane carboxylic acid, and polyisocyanates are used. Using such carrier materials, the water is reversibly bound by the carrier material with ionic groups and forms a gel-like paste.

The amount of water relative to the moisture-reactive groups may be from substoichiometric to superstoichiometric, more particularly suitable is a ratio of the reactive groups [H ₂ O] / [NCO] or [H ₂ O] / [silicon-bonded alkoxy] greater than 2 to 5, in particular from 2 to 4. Preference is given to superstoichiometric, in particular with a ratio of 2 to 3. Furthermore, the secondary component may comprise additional compounds having at least two NCO-reactive groups. In particular, these are polyamines or polyols

There are other ways to formulate a water paste. Here, water is mixed with fine fillers such as fumed silica, such as Aerosil®, available from Degussa, or chalk or molecular sieves. In this case, the filler is reversibly bound by the water at the surfaces or in the pores.

However, water-pastes are organic polymers with ionic groups. Water pastes with organic polymers which contain ionic groups and can be used as secondary component B for use according to the present invention are generally already known and are, for example, Sikaflex®-254 or SikaTack®-Plus, which are one-component warmmelt polyurethane adhesives, in the Sikaflex® - 254 Booster System or SikaTack®-Plus Booster System added.

Further constituents of the main component A and / or the minor component B are the additives known to the person skilled in the art, such as Plasticizers, fillers, adhesion promoters, UV absorbers, UV and / or heat stabilizers, antioxidants, flame retardants, optical brighteners, catalysts, color pigments or dyes, possible.

Suitable catalysts for prepolymers having isocyanate groups are in particular amines or organic metal compounds of the metals tin, zinc or bismuth. As organic metal compounds in particular dibutyltin dilaurate (DBTL) are preferred.

If the adhesive or sealant comprises prepolymers containing alkoxysilane groups, catalysts which catalyze the hydrolysis and / or crosslinking of alkoxysilane groups are suitable. Such catalysts include, for example, titanates.

The components A and B are present in the adhesive or sealant preferably in a volume ratio A to B of 200 to 10, in particular from 150 to 20, preferably 100 to 30 before.

The adhesive or AB sealant produced by means of a device according to the invention can be contacted with at least one surface of at least one substrate. The adhesive or sealant applied to at least one substrate surface according to the invention is preferably used for the bonding and / or sealing of at least two substrate surfaces. The adhesive or sealant is preferably present as a bead of adhesive or sealant.

Furthermore, the invention therefore relates to a method for bonding and / or sealing at least two substrate surfaces comprising the steps: (i) applying an adhesive or sealant produced by means of an inventive device to at least one substrate surface and contacting the applied adhesive or sealant with a further substrate surface; or applying an adhesive or sealant produced by means of a device according to the invention between at least two substrate surfaces; and (ii) curing the applied adhesive or sealant. The at least one substrate may be a variety of materials. In particular, plastics, organic materials such as

Leather, fabrics, paper, wood, resin bonded wood materials, resin-Texil

Composite materials, glass, porcelain, ceramics and metals, in particular painted metals and / or building elements.

Particularly suitable plastics are polyvinyl chloride (PVC), acrylonitrile-butadiene-styrene copolymers (ABS), SMC (sheet molding composites), polycarbonate (PC), polyamide (PA), polyester (PE), polyoxymethylene (POM), Polyolefins, especially polyethylene (PE) or polypropylene (PP), preferably with plasma, corona or flame surface treated PP or PE.

Preferably, at least one substrate is a pane, preferably of glass, and at least one further substrate of glass, wood, lacquer or plastic, in particular polyvinyl chloride (PVC). Thus, the inventive method can preferably in door or window construction, where glass is glued to a frame made of wood or plastic, or in vehicle manufacturing, where glass is glued to a lacquer-coated body, are used.

The delivered by the inventive device adhesive or

Sealant AB therefore has further advantageous properties in addition to rapid curing. In particular, when applying the adhesive or sealant AB on a substrate no partial Fehlklebungen occur. The combination of two substrates therefore always results in optimal connections.

Short description of the drawing

In the following, embodiments of the invention will be explained in more detail with reference to the drawings. The same elements are provided in the various figures with the same reference numerals. Only the elements essential for the immediate understanding of the invention are shown. The

Flow direction of the media is indicated by arrows. Show it:

Fig. 1 in a sectional view of the front part of an inventive

Device 1 in a first basic embodiment with a rotatably mounted and with a drive unit (not shown) connected transfer element 2, which has a supply channel 21 through which a minor component B via an end piece 3 in a container 4 can be inserted through which a main component A is feasible;

Fig. 1a, the end piece 3 of Figure 1 with a mounting thread 32, a

Lock nut 33 and with a central bore 31 which leads to an outlet opening 30;

Figure 2 shows the device of Figure 1 with a transfer element 2, the two aligned in opposite directions end pieces 3 ', 3 ", which are connected to the supply channel 21;

FIG. 3 shows the device of FIG. 2 with end pieces 3 ', 3 "which are each connected to a separate supply channel 21' or 21";

Fig. 4a in sectional view another device according to the invention

1 in the first basic embodiment with a rotatably mounted by means of a ball joint 23 and connected to a drive unit transfer element 2, which has a supply channel 21 through which a minor component B via an end piece 3 in the front interior 441 of a container 4 can be inserted through the a main component A is feasible;

Fig. 4b, the device 1 of Figure 4a with further rotated

Transfer element 2; 5 shows in a spatial view the device 1 of FIG. 4b with the position of the transfer element 2 shown there;

Fig. 6 shows the device 1 of Figure 4a with a ball joint 23, from which the supply channel 21 in a central part 443 of the interior of the

Container 4 opens, which is filled with the minor component B;

Figure 7 shows the device 1 of Figure 4a with a ball joint 23, which is supplied directly to the minor component B;

8 is a sectional view of the front part of an inventive

Device 1 in a second basic embodiment with a preferably stationary held transfer element 2 and a rotatably mounted and with a drive unit (not shown) connected to container 4, through which the main component A is cyclically movable about the transfer element 2;

9 is a sectional view of the front part of another inventive device 1 in the second basic embodiment with transfer elements 2 ', 2 ", which are connected by means of mounting elements 26 with the rotatable container 4, in which a guide element 22 is provided, along which the main component A cyclically from the tails 3 of the

Transfer elements 2 ', 2 "is passed through the container 4 is practically linear;

Fig. 9A in a spatial representation of the guide member 22 of Figure 9 enclosed by the present in the form of a HeNx

Minor component B embedded in the major component A (shown schematically by arrow); 10 is a sectional view of the front part of an inventive

Device 1 in a third basic embodiment with stationary held and provided with an external thread 29 transfer element 2 and stationarily held and provided with an internal thread 49 container 4, in which the

Main component A by the internal thread 49 and the external thread 29 is movable about the transfer element 2;

11 shows the device of FIG. 1 with a scraper 41 connected to the inner wall 46 of the container 4, the front side via a scraper 41

Edge 411 can contact the outlet opening 30 of the end pieces 3 and free from deposits;

FIG. 12 shows a section along the line A-A through the device 1 of FIG. 11 provided with a wedge-shaped scraper 41; FIG.

Fig. 13 is a section along the line A-A through the device 1 of

Figure 11, which is provided with two scrapers 41 ', 41 ", which have the form of hollow cylinder segments;

14 shows a container segment 40 with a wedge-shaped scraper 41;

15 a container segment 40 'with two scrapers 41', 41 ", the

Having form of hollow cylinder segments;

Fig. 16, the device 1 of Figure 1 with a container 4, the one

Container segment 40 'according to FIG 15 has;

Fig. 17 shows the device of Figure 1 with a scraper 41, which is parallel to the axis of displacement of an adjustable and fixable

End piece 3 is arranged, the outlet opening 30 can be aligned against the scraper 41; Fig. 18 shows an inventive device 1 in the first principle

Design with a control unit 5, a drive device 9 and supply valves 6A, 6B for the main component A and the minor component B; and

19 shows two substrates S1, S2, which are connected to one another by means of an adhesive and / or sealant AB delivered by a device 1 according to the invention.

Ways to carry out the invention

FIG. 1 shows the front part of a device 1 in a first basic embodiment. The device 1 has a container 4 shown in a longitudinal section, through which a main component A is guided, in which by means of the device 1, a minor component B can be stored spirally, whereby an adhesive and / or sealant stream AB is formed. For this purpose, in the container 4, which is configured as a hollow cylinder and provided with an outlet nozzle 45, a rotatably mounted and with a drive unit (see, eg, Figure 18) connected transfer element 2 is provided, which has a supply channel 21 (shown in section) through which the secondary component B via an end piece 3 in the interior 44 of the container 4 is inserted. In the embodiment shown, the main component A is continuously conveyed under pressure through the container 4, while the transfer element 2 is cyclically rotated about an axis z extending coaxially to the axis of the container 4. Consequently, the secondary component B emerging from the outlet opening 30 of the end piece 3 is incorporated in the main component A in the form of a HeNx.

The outlet opening 30 of the end piece 3 is positioned on the one hand by the transfer element 2 and on the other hand by the inner wall 46 of the container 4 about the same distance away. This prevents that the minor component B is stored too close to the outer edge of the main component A and penetrate this outwards and the outer surface of the adhesive and / or sealant AB current or the emitted adhesive and / or sealant bead can contaminate. On the other hand, it is ensured that the secondary component B can rapidly penetrate into its peripheral zones after application of the adhesive and / or sealant stream AB and can cause a rapid hardening of the main component A.

For individual adaptation to the components A, B,... Used as well as the basic values of the planned applications, end pieces 3 are preferably used which allow the position of the outlet opening 30 to be set as desired. Of course, it is also possible to use end pieces 3 with a matched diameter of the outlet opening 30. Also to be considered are the outer diameter dj of the transfer element 2 and the inner diameter de of the container 4. If the difference of the diameter d _τ and d _{B is} small, only small amounts of the minor component B are normally supplied.

A simply configured end piece 3, which can be screwed by means of a thread 32 in a provided in the transfer element 2 threaded bore 26 and fixed by a nut 33 at a certain height, is shown in Figure 1a. Through the tail 3 is a bore 31 toward the

Outlet opening 30 out.

Figure 2 shows the device of Figure 1 with a transfer element 2 having two end pieces 3 ', 3 "aligned with the supply channel 21 and aligned in opposite directions, adjusted in different ways B "of the minor component B therefore two helicons with different diameters embedded in the flow of the main component A. This allows the locally occurring reaction processes to be set more precisely. The HeNx with the larger diameter (formed by the component flow B ") has a smaller turn diameter (thickness of the minor component B"), which is why they closer to the edge of the adhesive and / or Sealant AB can be zoomed without being penetrated by the minor component B ".

FIG. 3 shows the device of FIG. 2 with end pieces 3 ', 3 "which are each connected to a separate supply channel 21' or 21". Through the two supply channels 21 'and 21 "partial streams B', B" of the minor component B are supplied, which are preferably individually controlled. For example, the HeNx generated by means of the first partial flow B 'can be pulled through, while the second HeNx is generated only by segments by sequentially interrupting the second partial flow B "By changing the flow velocities of the component flows B', B", the coil diameters of the helices can also be set , The diameters of the helices themselves can be adjusted by adjusting the end pieces 3 ', 3 "The pitches of the helices are adjustable by selecting the rotational speed of the transfer element 2 and the flow velocity of the main component A. Of course, through the supply channels 21' and 21" also different secondary components in the container 4 can be inserted, so that numerous different applications and reaction processes can be realized. Furthermore, in the transfer element 2 further supply channels 21 can be provided, each with at least one connected end piece 3. Instead of bores in the transfer element 2, it is also possible to provide individual pipelines for the supply of secondary components B,..., Which, when combined, form the transfer element 2 as a bundle.

In FIGS. 1, 2 and 3, the transfer element 2 is rotatably mounted about an axis z, which is aligned coaxially with the axis of the container 4. Figures 4 to 7 show inventive devices 1 in which the transfer element 2 suspended by means of a ball joint and thus rotatable about a point which forms the center of a joint ball 23, which forms the ball joint together with a provided inside the container 4 bearing body 43. By the ball joint, the interior of the container 4 in a front and a drive side interior 441th or 442 divided. In the drive-side interior 441, the rear end of the transfer element 2 is connected via a rotary joint 87, 88 eccentrically with a round drive plate 86 which is driven by a motor 9 via a drive shaft 7. The rotary joint 87, 88 consists of an intermediate shaft 87, which is held displaceably by the drive plate 86 and which is connected to a coupling ball 88 held by the end piece of the transfer element 2.

By means of the drive plate 86, the rear end of the transfer element 2 can therefore be rotated in a circle about an axis, which preferably extends coaxially to the axis of the drive shaft 7 through the center of the ball joint 23. The front end of the transfer element 2, which forms the delivery of the minor component B end piece 3 protrudes into the front interior 441 of the container 4 and follows with the outlet opening 30 of the end piece 3 also a circular path concentric with the same axis. Therefore, in this embodiment of the device 1, an HeNx consisting of the minor component B can be incorporated into the main component A penetrating through an inlet opening 47 in the container 4 into the front interior 441 and flowing through it.

From FIGS. 4 to 7 it can be seen that the main component A can be inserted particularly easily into the front-side interior 441 of the container 4. Of course, the main component A can also be introduced into the container 4 via a plurality of channels, so that a uniform flow of the main component A results.

The configurations of the devices shown in FIGS. 4 to 7 are now practically different only in that the at least one secondary component B is supplied. In FIGS. 4a, 4b and 5, which all show the same configuration of the device 1, the supply channel 21 extends from the outlet opening 30 of the end piece 3 through the ball joint 23 toward the outlet opening 27 at the drive-side end of the transfer element 2. In Figure 4a, the transfer element 2 is aligned in a horizontal plane and turned accordingly; ie the outlet opening 30 is behind. In Figure 4b, the transfer element 2 is aligned in a vertical plane and rotated accordingly; ie the outlet opening 30 is below. FIG. 5 shows the device 1 (without outlet nozzle 45) in a spatial representation with the transfer element 2 in the position shown in FIG. 4b.

In the devices 1 of FIGS. 6 and 7, the minor component B is introduced directly into the joint ball 23.

The container 4 of the device 1 shown in Figure 6, in the region of the bearing body 43 has a central portion 443 of the interior, which is sealed against the other two parts 441, 442 of the interior by means of seals 232 and in which the ball joint 23 is mounted. The introduced into the middle part 443 of the interior minor component B can penetrate through wide recesses 231 in the ball joint 23 in the supply channel 21 and is further promoted to the outlet opening of the end piece 3.

In the embodiment of the device 1 shown in FIG. 7, the connection line 27 for the secondary component B is connected directly to the joint ball 23 by means of a connection element. In order not to hinder the rotation of the joint ball 23, a recess 431 is provided in the bearing body 43, within which the connection line 27 can be moved freely.

Figure 8 shows a sectional view of the front part of an inventive device 1 in a second basic embodiment with a preferably stationary held transfer element 2 and a rotatably mounted and with a drive unit (not shown) connected to container 4, through which the main component A, during its promotion by the Container 4, is cyclically moved around the transfer element 2. The main component A is detected by the inner wall 46 of the container 4, optionally by at least one guide element 42, which rotatably the main component A with the container 4 in the axial direction Outlet nozzle 45 leads out. Due to the stationary holding of the transfer element 2, the secondary components B,... Can be fed in particularly easily. The hollow cylindrical container 4 is preferably inserted into a rotatably mounted annular flange 85, which is rotatable about a tube 84, through which the main component A in the container 4 can be inserted. In addition, FIG. 8 shows schematically that, in addition to the container 4, the transfer element 2 can also be rotatably mounted. In this embodiment, the container 4 and the transfer element 2 are preferably rotated against each other.

In FIG. 9, two transfer elements 2 ', 2 "are connected to the rotatably mounted container 4, so that the end pieces 3 of the transfer elements 2', 2" project through the wall of the container 4 into its interior space 44. The secondary components B, (C, if present) entering the container 4 through the end pieces 3 are therefore embedded in the flow of the main component A, which passes through the container 4. In order to prevent the flow of the main component A is detected by the container 4 and rotated, it is guided linearly along a preferably provided guide element 22. In order to prevent rotation of the main component A, the container 4 can also be rotated back and forth.

The at least one minor component B therefore does not necessarily have to be embedded in the form of a HeNx in the main component A, as shown in FIG. 9A. Secondary component B can follow any line or curve that has a preferably regular course. By the back and forth turning of the container 4 also results in a particularly simple supply of at least one minor component B, ..., which is also introduced via a plurality of end pieces 3 in the container 4.

By kinematic reversal can be achieved by means of the device 1 of Figure 9, a further advantageous embodiment of the device 1. In this case, the main component A, for example by means of the guide element 22nd rotated while the container 4 is held stationary with the end pieces 3. The guide element 22 shown can be connected for this purpose via the drive shaft 7 to the motor 9.

Figure 10 shows a sectional view of the front part of an inventive device 1 in a third basic embodiment with stationary held and provided with an external thread 29 transfer element 2 and stationarily held and provided with an internal thread 49 container 4, in which the main component A through the internal thread 49 and External thread 29 is moved to the transfer element 2. The device 1 in this embodiment therefore does not require a drive device to achieve the desired rotation between the transfer element 2 and the main component A. Only the use of the internal thread 49 or the external thread 29 is possible. By using both threads 29, 49, the movement of the main component A, however, is optimally controlled.

It can be seen from FIGS. 1 to 10 that the device 1 according to the invention is of simple construction in all embodiments and can therefore be manufactured, operated and maintained with little effort. After removal of the container 4, direct access to the transfer element 2 and the end pieces 3, 3 ', 3 ", ... is possible so that they can be easily adjusted and cleaned. 3 ', 3 "to prevent during operation, the device 1 of Figure 11 on the inner wall 46 of the container 4 is provided with a scraper 41, the front contact via an edge 411, the outlet opening 30 of the tail 3 and can free from deposits. With each revolution of the transfer element 2 or the container 4, the outlet opening 30 of the end piece 3 is therefore stripped off, so that the proper functioning of the device 1 is always ensured. Scrapers of this or a type described below can be used in all described embodiments of the device 1. FIG. 12 shows a section along the line AA through the device 1 of FIG. 11 provided with a wedge-shaped scraper 41. It can be seen that the edge 411 of the scraper 41 contacts the outlet opening 30 of the end piece 3.

11 shows a section along the line AA through the device 1 of FIG. 11, which is provided with two scrapers 41 ', 41 ", which have the shape of hollow cylinder segments, whereby the outlet opening 30 of the end piece 3 is contacted with a leading edge 411 and then closed by an outer surface 412 of the respective scraper 41 'or 41 ". With each quarter turn of the transfer element 2 against the container 4, the outlet opening 30 is closed and opened again alternately.

If the device 1 is to be provided with at least one scraper 41, 41 ', 41 ", this can be done particularly easily with the container segments 40, 40' shown in FIGS. 14 and 15, which are inexpensive to produce and easy to assemble 16, the container segments 40, 40 'are preferably provided with flange elements 89 which can be screwed to other elements of the container 4. The use of container segments 40, 40' further allows the selection of a scraper 41, 41 ', 41 " each adjusted position of the end piece 3 is optimally adapted.

The choice of different scrapers for corresponding settings of the end piece 3 is avoided in the apparatus of Figure 17, in which the scraper 41 is arranged displaced in the direction of flow of the main component A relative to the end piece 3, so that this can be moved parallel to the scraper 41 and optionally adjusted , The provided with the outlet opening 30 tail 3 is angled in an L-shape against the scraper 41 so that the outlet opening 30 is aligned with each rotation of the end piece 3 once against the scraper 41 and can be detected and cleaned by this. The end piece 3 can therefore arbitrarily by turning to be adjusted. By aligning and fixing the outlet opening 30 against the scraper 41 after adjustment, it is ensured that it is always cleaned during operation, regardless of the selected position.

FIG. 18 shows a device 1 according to the invention in the first basic configuration with a control unit 5, a drive device 9 and supply valves 6A, 6B coupled to one another for the main component A and the secondary component B. The supply valves 6A, 6B are constructed in a known manner and have one Valve body 62 A, 62 B on an elastically mounted needle 61 A, 61 B, which closes the outlet of a material chamber 66 A, 66 B leading to a transfer hole 67 A, 67 B, through which the main and minor components A, B separated from each other in the container are transferable. The needle 61A, 61B is held by a piston 64A, 64B connected to a pressure chamber 63A, 63B which is depressed by a coil spring 65A, 65B. By increasing the pressure in the pressure chamber 63A, 63B, the needle 61A, 61B is lifted and the opening to the transfer hole 67A, 67B exposed, so that the component A, B to be processed from the material chamber 66A, 66B into the transfer hole 67A, 67B can occur.

The front part of the device 1 with the container 4 and the transfer element 2 has been described above. The container 4 is inserted into the transfer hole 67A and held by a coupling ring 81. Through the transfer hole 67A, 67B of the supply valves 6A, 6B, a drive shaft 7 is guided, which is introduced on the one hand via a coupling element 91 with a drive motor 9 and on the other hand in a coupling cylinder 28 of the transfer element 2 and anchored there in a metal coupling element 82 by means of coupling pins 83.

The main component A passes during operation of the device 1 through the first supply valve 6A in the transfer hole 67A and further along the drive shaft 7 in the container 4. The in the transfer hole 67B By contrast, reaching secondary component B can only penetrate through a bore in the drive shaft 7 into a shaft channel 71 provided therein, through which the secondary component B is guided to the feed channel 21 of the transfer element 2.

Essential process parameters P1, P2,..., In particular the supply of the component A and / or B and the motor 9 coupled to the drive shaft 7, are preferably controllable by means of a control unit 5, which is connected to the device 1 according to the invention. For example, the density of incorporation of the minor component B can be adjusted by controlling the supply thereof and by changing the rotational speed of the motor 9. The formation of the adhesive and / or sealant stream can therefore be adapted in a simple manner to the respective needs of the user.

The device according to the invention has been described and illustrated in preferred embodiments. On the basis of the teaching according to the invention, however, a variety of further expert designs of the device 1 described can be realized. In particular, the shapes, sizes and material properties of the device elements are expertly selectable. Various valves, if any, and drive devices can be used in a skilled manner. The components to be processed and their dosage are selected depending on the intended application and can be processed in any composition by means of the device 1 according to the invention.

The adhesives and / or sealants dispensed by the device 1 may be dispensed to a single substrate or, as shown in Figure 19, used to join two or more substrates S1, S2, .... LIST OF REFERENCE NUMBERS

A main component / main component flow

B minor component / secondary component stream AB adhesive or sealant stream comprising main component A and

Nebenkomponente B, wherein the main component A is the

Subcomponent B completely encased

1 Device for forming an adhesive and / or sealant stream

2, 2 ', 2 "transfer element 21 supply channel

22 guide element

23 bearing element of the transfer element 2

231 recess in the bearing element 23rd

232 Seal for the bearing element 23 26 Mounting element

27 inlet opening for the minor component B

28 coupling cylinders

29 connected to the transfer element 2 external thread

3, 3 ', 3 "end piece 30 outlet opening of the end piece 3

31 bore through the end piece 3

32 thread of the end piece 3

33 locking nut 4 container 40, 40 'container segment 41, 41', 41 "scraper

411 edge of the scraper

412 cylinder segment surface 42 guide element 43 bearing body in the container 4

431 recess

44 Interior of the container 4

441 front part of the interior 44 442 drive-side part of the interior 44th

443 middle part of the interior 44

45 outlet nozzle of the container. 4

46 inner wall of the container 4

47 inlet opening for the main component A

49 connected to the container 4 internal thread

5 control unit

6A, 6B supply valve for component A or B, respectively

61A; 61 B Shutter pin

62A; 62B valve body

63A; 63B pressure chamber

64A; 64B piston

65A; 65B spring

66A; 66B material chamber

67A; 67B transfer hole

7 drive shaft

71 wave channel

81 coupling ring

82 metal coupling element

83 coupling pin

84 feed tube

85 ring flange

86 drive plate

87 intermediate shaft

88 coupling ball

89 flange element

9 drive motor

91 element for coupling the drive motor 9

P1, P2, ... parameters

S1, S2, ... substrates

Claims

claims

1. Device (1) for forming an adhesive and / or sealant stream (AB) comprising a main component (A) and at least one minor component (B), with one of the leadership of the adhesive and / or sealant stream

(AB) serving container (4), in which the main and the minor component (A; B) can be introduced under pressure and to the adhesive and / or sealant stream (AB) are merge, from an outlet nozzle (45) of the container (4 ), characterized in that at least one end piece (3) of a transfer element (2) which projects into the container (4) is provided with at least one feed channel (21, 210, 71) embedded therein, by which the at least one secondary component ( B) can be introduced into the container (4) in such a way that it can be received and completely enclosed by the flow of the main component (A) flowing through the container (4) and in that means (7; 9; 22; 29;

49) are provided, by means of which during the formation of the adhesive and / or sealant stream (AB) rotation between the end piece (3) and the flow of the main component (A) can be realized.

2. Device (1) according to claim 1, characterized in that

a) the at least one end piece (3) is rotatably held within the container (4); or

b) the container (4) is rotatable about the preferably stationary held at least one end piece (3), wherein upon rotation of the container (4), the main component (A) is detected and rotated; or

c) the container (4) with the at least one end piece (3) is rotatable, wherein upon rotation of the container (4) the main component (A) is not substantially detected and not rotated; or d) static or dynamic means for rotating the main component (A) are provided within the container, wherein the at least one end piece (3) from the container (4) or within the container (4) is held stationary.

3. Device (1) according to claim 1 or 2, characterized in that the at least one end piece (3) with its outlet opening (30) fixed or adjustable, spaced from the inner wall (46) of the container (4) is positioned, and / or that the at least one end piece (3) with its outlet opening (30) preferably in the flow direction of

Main component (A) is aligned.

4. Device (1) according to claim 1, 2 or 3, characterized in that the transfer element (2) with the at least one end piece (3) rotatably mounted and directly or via an optionally with a

Supply channel (21, 210) provided drive shaft (7) with a drive motor (9) is connected.

5. Device (1) according to claim 1, 2 or 3, characterized in that the at least one end piece (3) within the rotatably mounted

Container (4) is held stationary or connected to the rotatably mounted container (4), and that the container (4) is connected to a drive motor (9).

6. Device (1) according to claim 1, 2 or 3, characterized in that within the container (4) provided or connected to this at least one end piece (3) and the container (4) are held stationary and that in the interior ( 44) of the container (4) with the container (4) and / or with the transfer element (2) connected to internal thread (49) or external thread (29) is provided along which the main component (A) or the adhesive and / or sealant stream (AB) through the container (4) is transferable or that within the container (4) a rotatably mounted means (22) is provided, by means of which the Main component (A) relative to the at least one end piece (3) is rotatable.

7. Device (1) according to claim 1, 2 or 3, characterized in that the transfer element (2) by means of a ball joint (23, 43) rotatably mounted and at the drive-side end with a drive device (7, 86, 87, 88, 9 ) is coupled so that the outlet opening (30) of the end piece (3) in a part (441) of the interior of the container (4) is cyclically movable, in which the main component (A) is insertable.

8. Device (1) according to claim 7, characterized in that the transfer element (2) has a bearing element (43) held in a ball joint (23),

a) through which the supply channel (21) to a provided on the drive-side end of the transfer element (2) connecting element (27) extends; or

b) to which a supply line for the at least one minor component (B) is directly connectable; or

c) having at least one recess (231) through which the at least one minor component (B), which is insertable into a against the joint ball (23) open part (443) of the container (4), enter the supply channel (21) can.

9. Device (1) according to any one of claims 1-8, characterized in that at least one with the container (4) connected scraper (41; 41 ', 41 ") is provided, which up to the outlet opening (30) of the tail ( 3) protrudes into the interior (44) of the container (4) and with each mutual rotation of the transfer element (2) and the container (4) strips in phases and / or closes, or that at least one with the container (4) connected scraper (41; 41 ', 41 ") is provided, which projects into the interior (44) of the container (4) and against the outlet opening (30) of parallel to the scraper (41; 41 ', 41 ") displaceable end piece (3) within an adjustment range with each revolution once aligned is.

10. Device (1) according to claim 9, characterized in that the scraper (41; 41 ', 41 ") is a body with at least one edge (411) and / or a cylinder segment surface (412), along which the outlet opening (30 ) of the end piece (3) can be guided with each mutual rotation of the transfer element (2) and the container (4) and / or that the stripper (41; 41 ', 41 ") consists of flexible or solid material.

11. Device (1) according to claim 9 or 10, characterized in that the container (4) at least one detachably mounted container segment (40,

40 ') provided with at least one scraper (41; 41', 41 ").

12. Device (1) according to any one of claims 1-11, characterized in that the transfer element (2) or the container (4) with at least one guide element (42) is provided along which the main component (A) or the adhesive - And / or sealant stream (AB) in the container (4) is guided.

13. Device (1) according to any one of claims 1-12, characterized in that the one or more piece transfer element (2) a plurality of supply channels (21, 210, 71) with end pieces (3 ', 3 "), through which the secondary component (B) or other components in the container (4) are insertable.

14. Device (1) according to any one of claims 1-13, characterized in that a control unit (5) is provided, by means of which the flow of at least one of the components (A, B, ...) and / or the Rotation between the end piece (3) and the flow of the main component (A) is adjustable.

15. adhesive or sealant (AB) consisting of a main component (A) and at least one minor component (B) by means of a device (1) according to any one of claims 1-14 to an adhesive and / or sealant stream (AB) were merged.

16. A method for bonding and / or sealing at least two substrates, comprising the steps of: i) applying an adhesive or sealant according to claim 15 to at least one surface of at least one

Substrate (S1) and contacting the applied adhesive or

Sealant having a surface of another substrate (S2); or

Applying an adhesive or sealant according to claim 15 between at least two substrates (S1, S2); and ii) curing the applied adhesive or sealant.

17. Substrates (S1, S2), in particular metal, glass, wood and / or building elements, connected to an adhesive or sealant (AB) according to claim 15.