DE202023000214U1 - Applicator for a 2-component adhesive and set for stabilizing elements to be glued during the drying period - Google Patents

Abstract

Applicator for 2-component adhesive, wherein a first component and a second component are accommodated separately in a dosing capsule (13), each dosing capsule (13) having an outlet opening (13.1) provided with a closure (6) and wherein the the two dosing capsules (13) can be placed against one another to dispense the first and second components and positioned with their outlet openings (13.1) next to one another and the first and second components can be dispensed simultaneously by manual pressure on both dosing capsules (13).

Description

The invention relates to an applicator for 2-component adhesive and a set for dosing and stabilizing elements to be bonded during the drying time of 2-component adhesive.
On the one hand, this is intended to solve the problem of precise dosing and the short shelf life of 2-component adhesives, which arises when the two components, binder and hardener, are to be precisely mixed with one another using a double syringe or from two different tubes and then applied to the Glue should be applied. The double syringe is never 100% airtight, so it hardens even when the packaging is closed. This can be epoxy resin, polyurethane or methyl methacrylate.

Two-component adhesive, also called two-component adhesive or 2K adhesive, is an adhesive that consists of different components (resin and hardener). By mixing the two components immediately before use, the curing reaction is usually started at room temperature. Two-component systems harden through chemical reactions
such as polyaddition, polycondensation and chain polymerisation. (from Wikipedia https://de.wikipedia.org/wiki/Zweikomponenkleber).
Usually, the 2-component adhesive is first applied with a double syringe, then mixed in a mold with a spatula and then applied to the surfaces to be bonded with a spatula. A mixing nozzle can also be attached once to the double syringe in order to mix the binder and hardener components with one another during application. Both methods are expensive and lead to the unnecessary discarding of adhesive, either through residue remaining in the mixing nozzle or through possible overdosing when using without a mixing nozzle. In addition, there are unnecessary costs and a lot of plastic waste due to the components of the double syringe and double syringe that can only be used once. Another problem is that the hardener or other reactive component in the tube or syringe will harden on its own when exposed to air. This happens, for example, after the first use and in the case of double syringes that have not yet been opened, also before actual use via diffusion, since the syringe can never be 100% airtight. Hence the usual shelf life of approx. 12 months. Another problem arises
if two parts are to be connected or glued together permanently and resiliently using a 2-component adhesive, but they are arranged in such a way that they would move away from each other due to gravity (slip) and thus no adhesion could occur, the same applies through movement, for example in a motor vehicle immediately after bonding if the elements are not fixed sufficiently and at least during the drying time, microcracks occur which significantly reduce the stability of the bond. The invention DE 44 29 503 C2 shows a medication blister connected to a package insert. The invention EP 1 015 352 B1 shows a blister pack for fragile medicines, with warnings and handling instructions printed directly on it so as not to destroy the capsules inside.

The invention EP 12 17 931 B1 describes a liquid in a flexible film package that can be applied sequentially and in the desired shape to a surface via a breakable closure.
The invention DE 28 44 899 C2 describes a capsule which is filled with adhesive and is inserted between surfaces to be bonded. When the surfaces to be bonded are pressed together, the capsule is opened by the resulting pressure and thereby releases the adhesive into the adhesive gap.

The invention DE 34 11 253 C2 describes a capsule containing two different capsules. These are filled with chemicals that react with each other and harden when mixed. This capsule is used to fill in boreholes.

Usually, attempts are made to fix these parts together with adhesive tape. However, there are various disadvantages. When attaching the adhesive tape, the parts can be moved towards each other. If the tape does not stick well to the substrate, the parts will also shift. The adhesive tape must also withstand the load for at least 10 minutes. In addition, this type of fixation can be complex if the elements are at a greater height, because then someone would have to climb up a second time and remove the adhesive tape again or the whole thing is exposed to moisture such as rain.

The invention has therefore set itself the task of using various variations to solve these disadvantages and problems of laborious mixing, warping, low shelf life, unnecessary environmental pollution and also short-term fixation during the drying period. The goal is to offer a simple way to make bonding using 2-component adhesive easier, safer and more environmentally friendly.

According to the invention, the applicator for two-component adhesive has a first component and a second component of a two-component adhesive separately from each other in one dosing capsule each, with each dosing capsule having an outlet opening provided with a closure, and with the two dosing capsules being able to be placed against one another for dispensing the first and second component and positioned with their outlet openings next to one another and the first and second component simultaneously by manual pressure can be applied to both dosing capsules.

This creates a very simple applicator for a two-component adhesive, which is particularly suitable for small dosages in the range of 0.2 to 5 ml for each of the components.

Preferably, the two dosing capsules for the first and second component are connected so that they can be folded together and, after being folded together, lie against one another on essentially flat rear sides of the dosing capsules.

The dosing capsules have a longitudinal axis from a base region to the outlet opening, with a connecting fold being arranged parallel or transverse to the longitudinal axes between the dosing capsules.
Furthermore, the dosing capsules for the first and second component can have interlocking shaped elements and/or a perforation and/or roughening on their rear sides for positioning them.

The first component, which is deposited in a dosing capsule, is a resin/binder and the second component, which is in the other dosing capsule, is a hardener.

Commercially available components for the two-component adhesive are used.

According to the invention, this is achieved by placing the adhesive components resin/binder and hardener in amounts of the typical one-off application amount, e.g. 3 ml for the respective area of application, in a dosing capsule or even a blister made only of aluminum or with a combination of aluminum and a foil or composite foil made of paper and/or plastic and/or aluminum are filled. It should be noted that the material used is airtight and does not allow any diffusion. It should also be chemically compatible with the components. This could be done with a coating, for example. The filling process could also take place under protective gas in order to avoid the inclusion of air or to prevent reactive gas from being included. The blister or the dosing capsule can also consist only of plastic. A typical quantity of light-curing resin is also filled into a blister or dosing capsule to produce a stabilization. The light-curing plastic used to produce the stabilization can be liquid or kneadable.

The material used for stabilization can also just be modeling clay, which is very adhesive and does not require light to harden.

The invention is explained in more detail below using exemplary embodiments and associated drawings.

• 1 eine Gesamtansicht der Vorrichtung und Set zur Dosierung und Stabilisierung 17 von zu verklebenden Elementen während der Trockenzeit von 2-Komponenten-Klebern;
• 2 eine mögliche Ausführung einer Dosierkapsel;
• 3 die Funktionsweise der Dosierkapseln;
• 4 die Handhabung der Dosierkapseln beim Ausbringen der zwei Komponenten Binder 2 und Härter 1;
• 5 die Herstellung der Stabilisierung 17 aus lichthärtendem Kunststoff 3;
• 6 Ansicht der verklebten Elemente;
• 7 das Anmischen der zwei Komponenten Binder 1 und Härter 2 mittels der Dosierkapsel 13 auf dem zu verklebenden Element;
• 8 zwei Dosierkapseln 13, die über eine Ausnehmung und einen Vorsprung zueinander positionierbar sind,
• 9 Dosierkapsel 13 mit Perforierung an der Rückseite.

Show it:

• 1 an overall view of the device and set for dosing and stabilization 17 of elements to be bonded during the drying time of 2-component adhesives;
• 2 a possible design of a dosing capsule;
• 3 how the dosing capsules work;
• 4 the handling of the dosing capsules when applying the two components binder 2 and hardener 1;
• 5 the production of the stabilization 17 from light-curing plastic 3;
• 6 view of the bonded elements;
• 7 the mixing of the two components binder 1 and hardener 2 using the dosing capsule 13 on the element to be bonded;
• 8th two dosing capsules 13, which can be positioned relative to one another via a recess and a projection,
• 9 Dosing capsule 13 with perforation on the back.

This creates a set according to 1 from dosing capsules 13 and LED 7. For this purpose, the dosing capsules 13 of the two adhesive components, binder 2 and hardener 1, are connected to one another via a connecting fold 5. The dosing capsule 13 with the light-curing plastic 3 for the production of a stabilization 17 could, for the sake of simplicity, also be connected to the other dosing capsules 13, which contain the adhesive components binder 1 and hardener 2, via a connecting fold 5, but it can also be enclosed loosely become. An LED 7 is now provided for the dosing capsules 13 . The LED 7 serves to harden the stabilization 17 formed from the light-hardening plastic 3.

The dosing capsules 13 of the two different adhesive components binder 2 and hardener 1 are first folded in the gap at the connecting fold 8, then they are opened simultaneously at the predetermined breaking points 12 by the closure 6 of the capsules of the binder 1 and hardener 2 is removed or the closure with the channel is opened using scissors. As a result of the two dosing capsules 13 lying one on top of the other, they can be squeezed out simultaneously and completely directly onto the adhesive surface 11 of the first element 15 . The binder 1 and hardener 2 flow through the dosing channel 4. This ensures that the exact dosing of the two components binder 1 and hardener 2 is maintained. This is difficult to do with two separate tubes with more than just the required content.
The dosing capsules 13 can have different shapes and, after being applied directly to the adhesive surface, can be used as a spatula for stirring. This means that the otherwise customary dosing syringe and a possible mixing cannula or spatula can be dispensed with. The dosing capsules 13 can have different sizes depending on the mixing ratio or area of application.

After mixing the two components binder 1 and hardener 2, the 2-component adhesive is created. The third dosing capsule 13 with the light-curing plastic 3 can now be opened if the parts to be bonded have to be fixed due to their position in space until the adhesive itself ensures initial stability. The elements 15 and 19 to be glued can now be pressed together as usual at the glue point. The element 15 is pressed onto the element 19 in the process.

After the elements 15 and 19 to be glued have been pressed together, a stabilization 17 can first be modeled at the upper connection point of the two elements in such a way that it encloses both elements over a small selective area and hardens with the attached LED 7 within 3-6 seconds becomes. For this purpose, the light-curing plastic 3 is irradiated with the light 18 from the LED. If necessary, a stabilization 17 can then also be formed with the light-curing plastic 3 on the underside and cured directly. Instead of the light-curing plastic, a very adhesive modeling compound can also be used to form the stabilization 17 .

The finished 2-component adhesive can now cure safely and appropriately in the adhesive gap 16 between the element 19 and the element 15 .

The light-curing plastic 3 can be clear or have any color that is adapted to the respective area of application. The stabilization 17 formed from the light-curing plastic 3 can be removed using a sharp-edged instrument after the 2-component adhesive has completely cured. However, the stabilization 17 could also be left there, since it is usually hardly visible and can even be colored in the corresponding color of the elements to be connected.
The plasticine stabilization could also have different colors, so that it can possibly be left at the glue point.

The LED light-emitting diode 10 for curing the light-curing plastic 3 emits a light 18 with a wavelength in the range from 360 nm to 480 nm, preferably in a range from 380 nm to 420 nm.

The set according to 1 Consists of an LED 7, two dosing capsules 13 for one portion each of the adhesive components binder 1 and hardener 2 and a dosing capsule 13 with light-curing plastic 3 or instead of the light-curing plastic made of an adhesive modeling compound, all of which can be connected to one another via a connecting fold 5.

Further features according to the invention and special advantages are explained in more detail in the following description with reference to the drawings.

In 2 a possible embodiment of a dosing capsule 13 with a substantially flat film or composite film 14 on the back is shown in side view. The closure 6 can be removed via a predetermined breaking point, as a result of which the dosing capsule is opened. Alternatively, the closure 6 can also be cut off.

3 shows essentially how the dosing capsules 13 work. The two dosing capsules 13 with the hardener 2 and the binder 1, whose closure 6 has been removed, are folded together along the fold 5 so that the composite film 14 (see 2 ) of the two dosing capsules 13 lie against one another. In variant A, the fold 5 is aligned parallel to the longitudinal axis L of the dosing capsules 13 . The outlet openings 13.1 and 13.2 of the capsules 13 are open. The third dosing capsule 13 with the light-curing plastic 3 was preferably removed beforehand or afterwards.
In variant B, the two capsules 13 for the hardener 2 and the resin/binder 1 are connected to one another transversely to their longitudinal axis L via the fold 5 and can thus be folded together transversely to the longitudinal axis L about the fold 5. The two closures 6 are now arranged opposite one another and can, for example, be removed together after folding. The third dosing capsule 13 with the light-curing plastic 3 is not shown in variant 2. This can be attached separately or attached to one of the two capsules 13 for hardener 1 and binder 2 on the side.

The handling of the two dosing capsules 13 when dispensing the two components resin/binder 1 and hardener 2 is in 4 shown. Both dosing capsules 13 rest against one another with their backs in the area of the composite foils 4 . Hardener 2 and binder 1 are applied to the adhesive surface 11 by manual pressure in the direction of the movement arrow on the two dosing capsules 13 through the respective dosing channel, which is not designated here. In the area of the outlet openings, which are not designated here, the two components hardener 2 and binder 1 are mixed by means of the dosing capsules 13 through their outlet areas.

5 shows the production of a stabilization 17 from light-curing plastic 3. The stabilization 7 was produced using the light-curing plastic 3 from the further dosing capsule 13. After the closure 6 has been removed from this dosing capsule 13, the light-curing plastic 3 is applied at the edge between the two elements 15, 19 to be bonded, so that it preferably overlaps an element, here element 15 on a top side. The light-curing plastic 3 is now cured by means of the LED lamp 7 . As a result, the two elements 15, 15 to be connected are fixed in a secure position until the two-component adhesive made of hardener 2 and binder 1 applied in the adhesive gap 16 has hardened, which can take several hours.

The view of the bonded elements 15, 19 with the stabilization 17 and the indicated bonding gap 16 is in 6 shown.

7 illustrates the mixing of the two components binder 1 and hardener 2 by means of the dosing capsule 13 on an adhesive surface 11 of an element to be bonded.

In 8th a variant is shown with two separate dosing capsules 13 that are not connected to one another, one of which contains the binder 1 and one the hardener 2 . For example, the dosing capsule 13 with the binder 1 has a depression 13.3 on the back in the film or composite film 14 and the other dosing capsule 13 with the hardener 2 has a corresponding elevation 13.4 on the back in the composite film. As a result, the two dosing capsules can be positioned next to one another in such a way that, for simultaneous dispensing of the resin/binder 1 and the hardness 2 from the depots 13A via the dosing channels 4, when the closures 6 have been removed, they rest against one another in such a way that their outlet openings 13.1 are next to each other condition. Due to the elevation 13.4 engaging in the recess 13.3, both dosing capsules 13 are securely fixed in position relative to one another during the dispensing of the two components 1, 2.

Alternatively, the blister-like designed dosing capsules 13 according to 9 have a perforation 20 or a roughening on their rear side on the film or composite film 14, through which they are fixed to one another after they have been placed against one another on the rear side. The two components resin/binder 1 and hardener 2 can now be discharged simultaneously from the depot 13A of each dosing capsule 13 via the dosing channel 4 and the outlet opening 13.1 after the closures 6 have been removed, eg cut off and the outlet openings 13.1 have thereby been released.

However, it was also found that two separate dosing capsules 13 with resin/binder 1 and hardener 2 lay against each other on their at least essentially flat backs after they were pressed and the pressure was applied to the two reservoirs or depots 13A for resin/binder 1 and hardener 2 as well do not slip without interlocking form elements (elevation/depression) and also without perforation, since the pressure acts laterally and opposite to each other on the dosing capsules and these are thus manually pushed against each other.

The dosing capsules 13 should be marked according to the components resin/binder 1, hardener 2 and light-curing plastic 3 contained therein

Reference List

1

binder

2

Harder

3

light-curing plastic

4

dosing channel

5

connection fold

6

closure

7

LED housing

8th

movement arrow

9

Battery compartment lock

10

LED light-emitting diode

11

adhesive surface

12

predetermined breaking point

13

dosing capsule

13.1

exit port

13.2

back

13.3

deepening

13.4

elevation

14

film/composite film

15

Item to be bonded

16

glue gap

17

stabilization

18

beam of light

19

element to be glued

20

perforation

L

longitudinal axis

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 4429503 C2 [0002]
• EP 1015352 B1 [0002]
• EP 1217931 B1 [0003]
• DE 2844899 C2 [0003]
• DE 3411253 C2 [0004]

Claims (9)

Applicator for 2-component adhesive, wherein a first component and a second component are accommodated separately in a dosing capsule (13), each dosing capsule (13) having an outlet opening (13.1) provided with a closure (6) and wherein the the two dosing capsules (13) can be placed against one another to dispense the first and second components and positioned with their outlet openings (13.1) next to one another and the first and second components can be dispensed simultaneously by manual pressure on both dosing capsules (13). applicator after claim 1 , characterized in that the two dosing capsules (13) for the first and second component are collapsibly connected and, after being folded together, rest against one another on essentially flat rear sides (13.2) of the dosing capsules (13). applicator after claim 1 or 2 , characterized in that the dosing capsules (13) have a longitudinal axis (L) from a base area to the outlet opening (13.1) and in that a connecting fold (5) is arranged parallel or transverse to the longitudinal axes (L) between the dosing capsules (13). Applicator according to one of the preceding claims, characterized in that the two dosing capsules (13) for the first and second component have shaped elements which can be engaged in one another on their rear sides for their positioning. applicator after claim 1 or 2 , characterized in that the first component is a resin/binder (1) and the second component is a hardener (2). Set for dosing and stabilizing elements to be bonded during the drying time of 2-component adhesives, whereby the set consists of - a dosing capsule 13 which contains the binder 1 of a 2-component adhesive - a dosing capsule 13 which contains the hardener 2 of a 2-component adhesive - a dosing capsule 13 which contains the light-curing plastic 3 - the dosing capsules have a closure 6 - the dosing capsules have a dosing channel 4 - an LED light-emitting diode 10, which sits in an LED housing 7 and the light-curing plastic 3 after it has been applied by irradiation can cure with their light 18 is characterized in that everything is packed together as a set. Set for dosing and stabilizing elements to be bonded during the drying time of 2-component adhesives, whereby the set consists of - a dosing capsule 13 which contains the binder 1 of a 2-component adhesive - a dosing capsule 13 which contains the hardener 2 of a 2-component adhesive - a dosing capsule 13 which contains an adhesive putty - the dosing capsules have a closure 6 - the dosing capsules have a dosing channel 4 is characterized in that everything is packed together as a set. Set for dosing 2-component adhesives, whereby the set consists of - a dosing capsule 13 which contains the binder 1 of a 2-component adhesive - a dosing capsule 13 which contains the hardener 2 of a 2-component adhesive - the dosing capsules have a closure 6 - the Dosing capsules have a dosing channel 4 is characterized in that everything is packed together as a set. Set for dosing 1-component adhesives and sealants, the set consisting of - a dosing capsule 13 which contains the 1-component adhesive or sealant - the dosing capsules have a closure 6 - the dosing capsules have a dosing channel 4, characterized in that that everything is packed together as one set.

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