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EP1529835B1 - Produit d'entretien pour lave-vaisselle et procédé pour sa fabrication - Google Patents

Produit d'entretien pour lave-vaisselle et procédé pour sa fabrication Download PDF

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Publication number
EP1529835B1
EP1529835B1 EP20040016910 EP04016910A EP1529835B1 EP 1529835 B1 EP1529835 B1 EP 1529835B1 EP 20040016910 EP20040016910 EP 20040016910 EP 04016910 A EP04016910 A EP 04016910A EP 1529835 B1 EP1529835 B1 EP 1529835B1
Authority
EP
European Patent Office
Prior art keywords
tablet
wave
wax
liquefied
tablets
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20040016910
Other languages
German (de)
English (en)
Other versions
EP1529835A1 (fr
Inventor
Rudolf c/o August Töpfer & Co. Ernst (GmbH&Co.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
August Toepfer & Co (gmbh & Co) KG
Original Assignee
August Topfer & Co (gmbh & Co) KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE20317207U external-priority patent/DE20317207U1/de
Application filed by August Topfer & Co (gmbh & Co) KG filed Critical August Topfer & Co (gmbh & Co) KG
Publication of EP1529835A1 publication Critical patent/EP1529835A1/fr
Application granted granted Critical
Publication of EP1529835B1 publication Critical patent/EP1529835B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0047—Detergents in the form of bars or tablets
    • C11D17/0065—Solid detergents containing builders
    • C11D17/0073—Tablets
    • C11D17/0082—Coated tablets
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/10—Carbonates ; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/18—Hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • C11D3/2086—Hydroxy carboxylic acids-salts thereof

Definitions

  • the invention relates to a process for the preparation of an agent for the care of dishwashers, which as acid-based either a proportion of acidic in aqueous medium (pH ⁇ 7) substance and at least one anionic surfactant or alkaline in an aqueous medium basic (pH> 7) substance contains.
  • From the DE-A-42 33 696 is a shaped body for the care of unloaded dishwashers, containing citric acid, known.
  • the moldings are coated with a paraffin layer, which has a melting range of 46-48 ° C.
  • DE-A-100 51 566 is a detergent tablets known that can be used to prevent limescale or scale removal and contains an acid in solid form, which also anionic surfactants may be present. Also, the teaching there provides an all-round coating of the moldings, the preparation being carried out by dry mixing of the ingredients and subsequent compression into tablets.
  • the Wachspropfen does not melt in the cold pre-wash cycle of the machine, but is first melted by the warm water of the main rinse cycle, so that the care agent reliably emerges at the right time of the wash cycle.
  • This system is very good in terms of application and leads to good results, but it is very expensive to manufacture and ecologically questionable because a bottle can be used only for one care process.
  • the aim of the present invention is to provide a process for the preparation of a dishwashing agent which, at a lower operating cost, provides a means which is as safe to use as the known wax-sealed bottles.
  • the invention consists in the basic idea of pressing the active ingredients into tablets and then coating them with a water-tight material which dissolves from the tablet at temperatures above 40 ° C., preferably 45 ° C.
  • the specified minimum temperature is in the range the temperatures at which conventional dishwashers perform their warm rinse (usually at temperatures of 50 to 60 ° C). In other words, it is crucial that the layer remains adhered to the tablet during the cold rinse and separates safely from the tablet at the beginning of the warm rinse cycle, so that it can develop its care effect.
  • Such coated tablets not only offer the performance advantages of the conventional system. In addition to the pure material savings by eliminating the bottle, there is also the advantage that tablet presses produce by a factor of 10 faster than comparably expensive bottle fillers and thus the production is more efficient.
  • the tablets can be pressed from active ingredients for both known systems, ie acid-based or alkaline.
  • tablets with an acid-based care system may contain powders containing citric acid (in the form of a monohydrate or anhydride) and anionic surfactants, as well as a binder.
  • citric acid in the form of a monohydrate or anhydride
  • anionic surfactants as well as a binder.
  • other or additionally further acids may be present instead of or in addition to the citric acid.
  • citric acid will account for the majority (more than 80%) of the acids contained.
  • Tablets based on the alkaline active system may contain sodium carbonate as the alkaline agent and binders for holding the tablet together.
  • Tablets of both care systems will generally contain additional disintegrants.
  • a tablet size preferably tablets with 80 to 200g, preferably 100g, powder into consideration.
  • the waterproof layer should, of course, have a thickness which reliably prevents as long as the layer has not yet risen or has detached from the tablet, that water comes into contact with the care substances compressed in the tablet. However, care should also be taken that the layer does not become too thick. On the one hand, an excessively thick layer unnecessarily delays the process of setting or releasing the layer; on the other hand, which is more serious, the material of the layer can be deposited in the dishwashing machine, for example, in the sewer line and become clogged. As a suitable thickness, a thickness between 0.5 mm and 1.5 mm, preferably 1 mm has been found.
  • the tablets are pressed into a geometric shape with a low ratio of its surface to its volume .
  • the ideal case for such a geometric shape is a sphere.
  • square shapes, oval shapes or rectangular shapes also meet this requirement, provided that the latter two shapes are not made too flat.
  • a wax and / or stearin layer is preferred.
  • a wax so this should be meaningfully formulated so that it is smashed by the circulation pump into fine drops, which are stable in the hot water in the dishwasher.
  • these fine wax drops then cool, a fine granules are formed, which can be rinsed easily in the wastewater, without the risk of clogging or clogging of the sewer line is.
  • the wax is formulated to be heavier than water in the liquid state. So it is sucked in any case by the circulation pump of the dishwasher and smashed into fine droplets.
  • the waterproof layer should advantageously be homogeneous and free of pores and openings, because otherwise the active ingredients can be washed out in the cold water rinse completely or partially.
  • a first layer of the waterproof material forms in this way a kind of primer whose possibly existing pores can be closed by the other layers.
  • cooling sections can be provided during the application between the individual coating steps in order to reliably harden the material of the watertight layer applied in the warm state.
  • This solution has the advantage that it is possible to dispense with guide rails in the area of the material shaft, which quickly become soiled at the boundary layer to the material shaft, so that residues of the material, for example wax residues, are dragged into the following machines, which is not desirable.
  • the proposed solution has the advantage that the processing speed can compete with commercial tablet presses, so that the total production can be done very inexpensively.
  • the material for the waterproof layer for example liquid wax
  • the material for the waterproof layer is preferably pumped at a 45 ° angle against a wave-shaped barrier by means of a propeller or a circulating pump, so that it is overflowed.
  • a material wave through which the tablets are conveyed for coating.
  • the system is dimensioned so that the tablets are coated with the material in more than 50% of their height in the first operation. Thereafter, the tablets are rotated in a helix by 180 ° along their longitudinal axis and coated in a second wave again over 50% of the height with the material. In this way, a seamless waterproof coating with the waterproof material, for example. A wax layer.
  • the material shaft may be created as a "standing" shaft by pumping up the liquid material from a supply and expelling it via a suitable surface.
  • Fig. 1 is shown schematically a care product for the care of dishwashers.
  • the care agent consists of compressed to a tablet 1 powder.
  • the powder may be composed of a substance which is acidic in an aqueous medium and of surfactants (acid-based) or of an alkali which is alkaline in an aqueous medium Fabric (alkaline).
  • the powder also suitably contains binders for holding the tablet 1 together with a disintegrating agent to aid in dissolving the tablet and releasing the active ingredients.
  • the tablet 1 is surrounded on all sides with a waterproof medium, in the case of the embodiment of a layer of wax 2.
  • a waterproof medium in the case of the embodiment of a layer of wax 2.
  • Fig. 1 is indicated by different directions of hatching that the coating has been applied from two sides of the tablet 1 and overlaps in the region of intersecting hatchings. In this way, it is ensured that the tablet 1 is closed on all sides and is surrounded by the wax 2 without pores.
  • the wax 2 is chosen to withstand the temperatures of the cold rinse of conventional dishwashers, but melts at the temperature of the hot rinse of conventional dishwashers. These temperatures are above 40 ° C, usually between 50 and 60 ° C. Only at these temperatures can the care product unfold its full effectiveness. Through the wax layer, the care product is protected from premature leaching in the dishwasher cold prewash program.
  • Fig. 2 schematically a possible method for coating the tablet 1 with wax 2 is shown.
  • Liquid wax 20 is passed over a barrier 4 in a coating device, so that a wave 200 of liquid wax 20 is produced.
  • Above the wax flow tablets 1 are kept held on a vacuum belt 3.
  • the distance of the tablets 1 to the flow of liquid wax 20 is selected so that the tablets 1 are pulled in the region of the shaft 200 by the liquid wax 20 and indeed with more than 50% of its height. So they are, as in Fig. 2 on the left, more than 50% coated on the underside with wax 2.
  • Fig. 3 is shown schematically how the tablets 1 are completely coated with wax 2.
  • a Tablets 1 After a Tablets 1 has passed through one side of a first wave 200 of liquid wax, it is rotated about its longitudinal axis by 180 ° (turned) and passes through a second wave 200 of liquid wax 20, in which they again by more than 50%, this time by the other side is coated with wax 2.
  • FIGS. 4 and 5 Alternatives to the generation of the shaft 200 are in the FIGS. 4 and 5 shown.
  • a “continuous wave” generated by passing a stream of liquefied wax 20 against the barrier 4
  • a "standing wave” is created by passing a stream of liquid wax 2 perpendicular to and against the surface of the liquid wax 20 is slid in the container.
  • FIG. 4 It is shown how the stream of liquid wax 20 is guided by means of a circulating pump 5 in a conduit 6 perpendicular to the surface of the liquid wax 20 to produce the standing wave.
  • the shape of the line 6 is selected at the exit point 7 so that the formation of a wave of suitable shape is supported.
  • the circulation of the liquid wax 20 is indicated by arrows.
  • the figure again shows how the tablets 1 held on a vacuum belt 3 are guided through the shaft 200 and coated with wax 2 in more than 50% of their outer surface.
  • FIG. 5 is used as an alternative to the circulation pump 5, a gear pump 50 which operates in the wax tray 8 to produce the shaft 200.
  • the circulation of the liquid wax 20 is indicated by arrows, and it is shown how the tablets 1 on a vacuum belt 3 conveyed in the shaft 200 are coated with wax 2.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Detergent Compositions (AREA)
  • Medicinal Preparation (AREA)

Claims (4)

  1. Procédé destiné à la fabrication d'un produit d'entretien pour lave-vaisselle comportant les étapes suivantes :
    a) mélange des principes actifs sous forme de poudre avec le cas échéant d'autres additifs pour former un mélange actif,
    b) compression du mélange actif pour former une pastille et
    c) revêtement de tous les côtés de la pastille avec un matériau étanche à l'eau, qui se détache de la pastille lors de températures supérieures à 40 °C, de préférence 45 °C, dans lequel pour le revêtement de tous les côtés de la pastille avec le matériau étanche à l'eau, le matériau est liquéfié dans un récipient et une vague dépassant la surface environnante du matériau liquéfié est générée dans le récipient à partir du matériau liquéfié, et dans lequel on fait passer la pastille à travers la vague de telle manière que, vue dans le sens vertical, elle est revêtue de matériau au-delà du milieu et dans lequel la pastille est ensuite tournée de 180° autour d'un axe horizontal et pour l'obtention d'un revêtement continu, on la fait passer à nouveau à travers une telle vague formée à partir du matériau de telle sorte que dans le sens vertical, elle est revêtue de matériau au-delà du milieu.
  2. Procédé selon la revendication 1, caractérisé en ce que la pastille est transportée au niveau d'une bande à vide et/ou d'une courroie à vide maintenue par la vague.
  3. Procédé selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que la vague est générée par afflux, de préférence suivant un angle de 45°, du matériau liquéfié contre une barrière de forme adaptée, disposée dans le récipient.
  4. Procédé selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que la vague est générée sous forme de vague « stationnaire » par génération d'un flux de matériau liquéfié dirigé vers le haut, perpendiculairement à la surface du matériau liquéfié.
EP20040016910 2003-11-05 2004-07-17 Produit d'entretien pour lave-vaisselle et procédé pour sa fabrication Expired - Lifetime EP1529835B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE20317207U 2003-11-05
DE20317207U DE20317207U1 (de) 2003-11-05 2003-11-05 Mittel zur Pflege von Geschirrspülmaschinen
DE10355858A DE10355858A1 (de) 2003-11-05 2003-11-28 Mittel zur Pflege von Geschirrspülmaschinen sowie Verfahren zu dessen Herstellung
DE10355858 2003-11-28

Publications (2)

Publication Number Publication Date
EP1529835A1 EP1529835A1 (fr) 2005-05-11
EP1529835B1 true EP1529835B1 (fr) 2008-09-03

Family

ID=34436343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040016910 Expired - Lifetime EP1529835B1 (fr) 2003-11-05 2004-07-17 Produit d'entretien pour lave-vaisselle et procédé pour sa fabrication

Country Status (1)

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EP (1) EP1529835B1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4233696A1 (de) * 1992-10-07 1994-04-14 Henkel Kgaa Maschinenpflegestift
DE10051566A1 (de) * 2000-10-18 2002-05-02 Henkel Kgaa Wasch- und Reinigungsmittelformkörper

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Publication number Publication date
EP1529835A1 (fr) 2005-05-11

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