DE102008028138A1 - Toilet bowl comprises a first water soluble base body with surfactant, perfume and/or a dye and an outer layer, which partially covers the base body - Google Patents

Abstract

Toilet bowl (1) comprises: at least a first water soluble base body (2) with surfactant content of 2-50 wt.%, perfume content of 1-20 wt.% and/or a dye content of 0.5-20 wt.%; and an outer layer (3), which at least partially covers the base body, where the outer layer exhibits a gloss degree of at least 8, preferably 25 gloss units, as measured according to DIN 67530 with 60[deg] geometry. Independent claims are included for: (1) a WC basket for the introduction of active materials into running water of toilet bowl, comprising a holder for the fixation of WC-basket on the edge of the toilet bowl, at least a chamber, through which the running water of WC-basket is passed, and the toilet bowl; and (2) a method for manufacturing the toilet bowl comprising applying the outer layer on the base body by drum coating-, spray- or dipping process.

Description

The This invention relates to coated toilet blocks, to methods of manufacture the coated toilet blocks and a toilet bowl for receiving the coated toilet stones.

State of the art

toilet blocks are well known in the art.

toilet blocks are predominantly used as pressed moldings, as Extrudates or produced by casting. It is also known, the molding such a body at least partially consist of a gel or liquid phase. For example, the core of a toilet block from a Compose gel in a cavity of the toilet block z. B. is fixed by gluing.

In the compositions of such toilet stones are increasingly found highly active ingredient ingredients, such as. Enzymes, perfume oils, Dyes, surfactants but which also have a relatively high sensitivity against UV radiation and heat.

This is of increasing importance insofar as that, in particular, natural Perfume oils, dyes and surfactants are common have a lower UV and / or thermal stability as equivalent and often cheaper synthetically produced alternative components, but one noticeable trend towards formulations with natural Components are there.

Of Further, such toilet stones become regular in packaging with transparent viewing windows or as portion packaging packed in transparent foil bags. By sunlight can it then lead to a greenhouse effect in the packaging, which then achieves temperatures that are sustainable Cause damage to temperature-sensitive ingredients.

Usually Toilet stones today have a cylindrical or bar-like Shape. However, it is desirable to provide shapes which delimit themselves from these traditional forms, creating a larger one Autonomy of a corresponding product at the consumer is achieved.

One Another problem is that the currently known toilet blocks for example, by their surface roughness, breaking strength or hardness a relatively low abrasion resistance exhibit. This can lead to abrasion of the toilet block in the production process come as soon as the toilet block comes into contact with another surface undergoes a relative movement, such as in transport and packaging operations. This dust, also called respiratory Fine dust can occur, on the one hand, an unwanted health burden from personnel in the production process to the other leads the dust for abrasion on transport and packaging machines. Of Further arise by the packing of loose or individually in Bags packed toilet blocks in z. B. a carton and their subsequent transport, relative movements between the so-packaged toilet blocks, to a toilet stone dust at the bottom of the box or bag. This Dust is particularly undesirable when children are in Contact to such a package and thus toilet stone dust can come.

Object of the invention

task The invention therefore is to provide a toilet block, which is inexpensive to produce and which is an attractive exterior Has manifestation. Furthermore, the toilet block is a adequate protection against mechanical impact, in particular abrasion, exhibit.

A another object is to develop a toilet block the over a sufficient UV and heat protection for the ingredients of the toilet block.

These Task is a toilet block with the features of the claim 1, a toilet bowl with the features of claim 18, and a manufacturing method according to claims 21, 22, 23 solved.

toilet block

Under a toilet block in the context of this application is a substantially dimensionally stable product It is understood that a preparation containing at least cleaning agent wraps, holds together and / or contains.

Of the according to the invention, comprises at least a first water-soluble base body as well at least one outer body at least partially covering the main body, water-soluble layer.

Of the Toilet stone can take any spatial form. So can the Toilet stone, for example, as a single- or multi-phase body be executed. The main body can in particular have a basic shape deviating from a rectangle or circle.

For this the toilet block can also consist of several partial bodies, preferably cohesively, be composed.

Especially The toilet block may be formed as a ball. This is so far advantageous than that a sphere based on the enclosed volume has a low surface area.

Of the Diameter of the spherical toilet block is between 1 mm and 10 cm, preferably between 5 mm and 5 cm, in particular preferably between 1 cm and 3 cm.

preferred Toilet stones are characterized in that the main body a granulate and / or an extrudate and / or a pellet and / or a prill and / or a melt-molded body and / or a Tablet is.

Composition toilet stone

Of the at least first water-soluble body has a surfactant content of 2-50 wt.% and / or a perfume oil content from 1-20% by weight and / or a dye content of 0.5-20 Wt .-% on.

Of the Body of the toilet block points in a special preferred embodiment at least one enzyme in one Concentration of 0.1 to 10 wt .-% on.

Outer layer

The outer one Layer has in particular less than 5 wt .-%, preferably less as 2 wt .-% and particularly preferably less than 1 wt .-% of the basic body on.

The inventive outer layer of the toilet block further preferably has a thickness between 10-1,000 μm, more preferably 20-500 microns, especially preferably 50-150 microns.

Prefers The layer completely encloses the body. However, it is also conceivable that the layer is the basic body covered in areas where a touch of the toilet block is provided with the user's hand, so that a direct contact between the user's hand and the main body of the toilet block is prevented.

In a further advantageous embodiment of the invention is at least a second layer different from the first one the main body applied, with the first and the Do not cover the second layer, partially or completely can.

The Layer can material, form and / or non-positively with be connected to the toilet block.

Especially it is preferred that the layer in the form of particles without addition of film formers such as HPMC or CMC on the base body is applied.

According to the invention preferred Toilet stones are characterized by the fact that the surface coverage of the toilet block between 0.4 and 40 mg / cm 2, preferably between 0.8 and 30 mg / cm 2 and especially between 1 and 20 mg / cm 2.

The toilet blocks preferably have a spray coating or a dip coating. For spraying the toilet blocks are all known in the art for this purpose Vorrichtun The spraying is preferably carried out by means of one-component or high-pressure spray nozzles, two-component spray nozzles or three-component spray nozzles. For spraying with single-fluid spray nozzles, the application of a high melt pressure (5-15 MPa) is required, while spraying in dual-fluid spray nozzles takes place by means of a stream of compressed air (at 0.15-0.3 MPa). The spraying with two-component spray nozzles is more favorable, especially with regard to possible blockages of the nozzle, but more expensive due to the high consumption of compressed air. It is also possible to use three-component spray nozzles which, in addition to the stream of compressed air for atomization, are intended to prevent a further air-guiding system which prevents blockages and droplet formation at the nozzle.

The Coating can also be done via a powder coating, in which a finely divided coating material by rolling movement, z. B. in a Trommelcoater on the surface of the moldings is applied and forms a solid coating layer.

A Another possibility is the process of coating. Here, a melt or a meltable substance in a coating drum where. By heating the coating drum, the melt is liquid held or the substance liquefied so that they Shaped molding and forms a coating.

preferred Toilet stones have a multiple coating. A "multiple" or "repeated" coating The molding can be made such that the molding between the individual coating steps at least superficially is dried. The coating steps are consequently carried out a drying step but at least by a waiting period, which is preferably at least one minute, preferably at least two minutes, and in particular at least three minutes, interrupted. Drying steps in more severe conditions be carried out, that is at elevated temperature and / or stronger vacuum, may be preferred at least 10 seconds, more preferably at least 30 seconds, preferably at least 40 seconds and in particular at least 50 seconds to be reduced.

The Coating materials can be added to active ingredients and active ingredients be. The coating materials are preferably dyes, Perfumes or bitter substances added.

Especially the layer u. a. by adjusting the surface roughness be printable by ink jet printing.

In a further preferred embodiment of the invention, the toilet block comprises a fastener through which the Toilet stone is fixable on the edge of a toilet bowl, that it flows in the fixed state of rinse water at least in sections becomes.

The Fastener can be used as a hook for attachment to the edge of a Toilet bowl, as a hook for attachment below the edge a toilet bowl, be designed as adhesive tape or the like.

The In addition, layer may depend on Their composition is such that they are controlled Release of the ingredients of the toilet block allows. For example, the layer can be dependent on from the water temperature, water overflow, of pH or other physical environmental parameters faster or slower, resulting in a controlled release can be.

Reflecting layer

According to a preferred embodiment of the invention, the layer has a degree of gloss of at least 8 gloss units, preferably at least 12 gloss units, particularly preferably at least 25 gloss units measured after application to the base body DIN 67530 with a 60 ° geometry.

By the shiny surface will be on the toilet block reflected radiation. Unlike z. B. opaque paint layers This is an undesirable heating of the Body and associated negative effects such as reduced storage stability, inactivation or even destruction of UV-unstable substances, thermal stress cracks in the molding etc. reduced.

Furthermore, heat rays are reflected by the layer, so that a corresponding heating the shaped body can be minimized.

In an embodiment of the invention is the reflective Layer dissolvable in water. This has the advantage that the reflective layer before using the toilet block does not have to be separated or removed from the toilet block and no residues when used as intended leaves.

In an alternative embodiment, is the reflective layer water-insoluble. In this embodiment of the invention becomes the layer by the mechanical influence of overflowing Rinse water detached from the body and carried away.

It layers are preferred in which the content of the coating to light-reflecting component (s) 0.15 to 9% by weight, preferably 0.25 to 8 wt .-%, particularly preferably 0.5 to 7 wt .-% and in particular 0.75 to 5 wt .-%, each based on the weight of the coating, is.

Especially it is preferred that the layer contains pearlescent pigments. Pearlescent pigments are luster pigments that add shine as an extra Have property in comparison to other pigments. They are flat trained, small, thin platelets with relative large diameters and smooth surfaces. Your characteristic properties of the planar structure, the high refractive index and the transparency produce in transparent Media as a result of multiple reflection of light effects that the Shine of pearls or mother of pearl. Also metal and similar Effects can be achieved with them without affecting the metals and metal alloys observed disadvantages. All pearlescent pigments consist of thin platelets of natural Minerals mica coated with titanium dioxide and / or ferric oxide. The pearlescent pigments are available in different particle size ranges, the pearl or color gloss depending on the size of the Ponds ranging from silky matt to a glittering sparkle vary can be. The excellent chemical, thermal and mechanical Properties of pearlescent pigments offer universal application possibilities. The pigments are physiologically harmless, environmentally friendly and can also be used in food packaging. Diluted acids and alkalis take pearlescent pigments not on. The pigments are not flammable and not self-igniting. They do not conduct electricity and tolerate temperatures up to about 800 ° C, what they are for incorporation especially predestined in melts. pearlescent are supplied as dry powder. For special applications Pigments can also be modified as a paste or specially modified Tobe offered.

Furthermore, it is preferable that the layer contains interference pigments. Interference refers to the superimposition of waves: as with the waves that are created in the water by throwing in two stones, the superimposition enhances certain waves and wipes out or attenuates others. The waves are always strengthened when Wellenberg meets Wellenberg. Wellenberg on Wellental results in a weakening or extinction. Classical pearlescent pigments, known as Iriodin ^® by Merck KG aA-consist of a mica flakes as support. This is encased by a hard-breaking metal oxide such as titanium dioxide or iron oxide. Depending on the structure of the pigments, different colors result: silver-white and whitish-colored pearlescent pigments are formed by coating with titanium dioxide, reddish-copper by coating with iron oxide. Combining both metal oxides, one obtains gold-yellow pigments. Green pigments can also be produced by using titanium dioxide and chromium (III) oxide together. In addition to this body color, these pigments still show an interference color.

Gloss measurement method

Gloss measurements are usually after DIN 67530 carried out. Here one uses so-called reflectometers. The principle of the reflectometer is based on the measurement of the directed reflection. For this purpose, the intensity of the reflected light is measured in a narrow band of the reflection angle. The measurement results are not related to the amount of light emitted, but to a black, polished glass standard with a defined refractive index. For this standard the measured value = 100 gloss units (100GE) is set. When specifying the measurement results, the angle of incidence is to be specified.

Roughness of the layer

In a further advantageous embodiment of the invention, the layer has a surface roughness R _z of less than 100 .mu.m, preferably less than 75 .mu.m, more preferably less than 50 microns and greater than 10 microns in the applied state on the body. This is on the one hand an attractive appearance On the other hand, a certain roughness of the surface ensures sufficiently good printability, for example by means of inkjet printing processes.

Abrasion resistance of the layer

Of Furthermore, it is advantageous if the layer attrition and / or Has greater friability as the attrition and / or friability of the body.

hereby Can be the cause of unwanted abrasion and dust during production, packaging, storage, transport and use become.

Under Friability of tablets will damage on its surface, lapping or breaking under impact or mechanical stress understood. To determine the friability the tablets to be tested are placed in a drum, wherein with each revolution of the drum by a curved driver, extending from the middle of the drum to the outer one Wall stretches, the tablets are dropped.

The Drum is connected to a drive on the horizontal axis, which rotates at a speed of 25 min -1. At everyone The tablets roll, slide or fall on the drum wall or on other tablets.

tablets with a diameter less than 30 mm are tested as follows. The Drum with an inner diameter of 286 mm and 39 mm thickness a transparent synthetic polymer is used. For tablets with a mass of up to 0.65 g, 20 tablets are tested. For tablets weighing more than 0.65 g, 10 tablets are used checked.

The Tablets are placed on a sieve and with a soft brush dusted. The dedusted tablets are then placed on an analytical balance weighed and put in the drum. The drum is rotated 100 times and the tablets are taken out. If no tablet jumped, split or broken, the tablets become cautious again Dusted and weighed to a milligram. The mass loss (Friability) can only be calculated and expressed in percent indicated on the referred initial amount. The exam will repeated and the mean of both results indicated.

tablets with a diameter greater than 30 mm or rectangular tabs are analyzed as follows. The drum with an inner diameter 286 mm and 55 mm thickness of a transparent synthetic polymer Is used.

It each 5 tablets are tested. The tablets will be put on a sieve and dedusted with a soft brush. The Dusted tablets are then weighed on an analytical balance and put in the drum. The drum is turned 10 times and the tablets are taken out. If no tablet jumped, split or broken, the tablets become cautious again Dusted and weighed to a milligram. The mass loss (Friability) can only be calculated and is in percent the referred initial amount indicated. The exam will repeated and the mean of both results indicated.

The Friability is understood as mass loss, based on the initial amount.

A Attrition measurement is used to evaluate the abrasion of granular Raw materials, where a defined amount of a granulated raw material with sieves of defined mesh sizes with and without metal balls is fractionated.

For this is a scale (± 0.01 g), a weighing dish, a Analysis sieve machine AS 200 (eg Fa Retsch), a sieve set with 4 wire sieves in the mesh sizes 1.0; 0.8; 0.6; 0.4 mm and drip tray, ∅ 200 mm, Height 50 mm (Retsch), one brush and 10 stainless steel balls ∅ 12 mm, 7 g needed.

Depending on the specified screening numbers of the starting material, a sieve of the abrasion test is used for the abrasion test Width 1.0, 0.8 or 0.6 mm selected (example: Specification max 5% <0.8 mm corresponds to a 0.8 mm sieve).

On the selected sieve will be 200 g ± 0.1 g of the Given raw material and sieved for 2 min without interval at 2 mm amplitude. From the sieved sample (according to the specification of testing raw material) will be 100 g ± 0.1 g given the drip tray. For the abrasion come additionally the 10 metal balls with on the drip tray. The abrasion screening now takes place with the sieve analysis machine AS 200 with 5 min at 2 mm amplitude without interval. After the abrasion screening the material is returned to the appropriate sieve and sieved again for 2 min at 2 mm amplitude without interval. After weighing back the fine fraction, the passage is given in%.

The result is given as abrasion value in% with the sieve size and the time. The passage is rounded up to whole numbers.
Example: sieve deck 0.8 mm, passage through the sieve after 5 min 30.8 g.
Abrasion value 5 min, 0.8: 31%

Oxygen permeability of the layer

According to an advantageous further development of the invention, the layer has an oxygen permeability of less than 10 cm 3 / m 2 .d. Bar ( DIN 53380 , 23 ° C, 75% RH).

This is especially in the use of oxygen-sensitive ingredients in the body of the toilet block advantage. Furthermore This may affect the use of another plastic packaging, z. B. in the form of a blister pack or bag to ensure the necessary oxygen barrier, be waived.

Rolling resistance of the toilet block

In a further preferred embodiment of the invention, the essentially spherical toilet block completely enveloped by the layer has a rolling resistance coefficient c _{R of} less than 10, preferably less than 1, particularly preferably 0.1.

Of the Roll resistance of the spherical toilet block is in particular in an automated production of importance. Here must be the Toilet stone rolling over in a simple and safe way Let transport chutes and the like move.

A lavatory basket

A lavatory basket for introducing active ingredients into the rinse water of a toilet bowl comprising a holder for fixing the toilet bowl at the edge of the toilet bowl, at least one in the attached state of the toilet bowl of rinsing water can be flowed through Chamber for receiving a toilet block, at least one toilet block

Especially it is preferred that at least two, in particular between 2 and 6 toilet blocks are arranged in the toilet bowl.

production method

In In one embodiment of the invention, the layer is applied the base body applied by a "drum coating".

In In another embodiment, the layer is applied to the base body applied by a "spray process".

In Another preferred embodiment of the invention is the layer Applied to the body by a "dipping process".

in the The invention will now be shown by way of example only Embodiments explained in more detail.

It shows:

List of Figures

1a Coated toilet block with a circular cross-section

1b Coated toilet block with oval cross section

1c Coated toilet block with square cross section

1d Coated toilet block with rectangular cross section

1e Coated toilet block with star-shaped cross-section

1f Two-phase toilet block with a circular cross-section

1g Two-phase toilet block with rectangular cross section

1h Two-phase toilet block with coated upper phase in cross section

1i Two-phase toilet block with coated and embedded core

2 Toilet baskets with differently coated toilet blocks

3 Toilet stone with imprint

4 Schematic diagram for a drum method for applying the layer to the base body

5 Schematic diagram for a spray method for applying the layer to the base body

6 Schematic diagram for a dipping method for applying the layer to the base body

1

toilet block

2

body

3

layer

4

A lavatory basket

5

Graphics / text element

6

drum

7

coating powder

8th

sprayer

9

spray cones

10

plunge pool

11

plating

The 1a to 1e show toilet blocks 1 in cross-section with different cross-sectional shapes. On the main body 2 of the toilet block 1 is a full-surface layer 3 applied.

The layer 3 can one over the main body 2 have substantially constant layer thickness. However, it is also conceivable that the layer thicknesses of the layer 3 over the main body 2 varies.

1f shows a two-phase toilet block with a round cross-section. How out 1f The layer is visible 3 designed as a hemisphere with the main body 2 is fixed and the together a spherical body 1 form.

1g shows a modification of 1f known toilet block with rectangular cross-section.

In 1h is a two-phase toilet block 1 shown. The toilet block has a first, upper phase 2a and a second, lower phase 2 B on, with the upper phase 2a completely off the shift 3 is covered.

Another embodiment of a multi-phase toilet block is the 1i refer to. The toilet block shown has a first, lower phase 2a and a second, upper phase 2 B on, being in the upper phase 2 B a core 2c taken in completely from the layer 3 is enclosed.

In 2 is a cross section through a toilet bowl 4 shown schematically by four spherical toilet stones 1 are arranged. The toilet stones 1 can, like that 2 it can be seen, different layer thicknesses of the layer 3 or diameter of the main body 2 exhibit. As a result, different release kinetics of the toilet blocks can be adjusted.

It is also possible that the toilet blocks according to the invention are provided with an imprint, for example by an ink jet printing method. This is exemplary in 3 shown.

In 4 is a drum coating process for applying the layer 3 on the main body 2 a toilet block exemplified.

An alternative process shows 5 , This is where the layer becomes 3 by means of a spraying device 8th on the main body 2 applied. The spraying device 8th creates a spray cone 9 from the layer material wherein the main body 2 then through the spray cone 9 is guided or the spray cone 9 around the main body 2 is moved, leaving a complete coating of the toilet block 1 with the layer 3 is achieved.

Another alternative coating process is the 6 refer to. This is a dip coating process by the body 2 by one with a coating bath 11 filled plunge pool 10 is performed, wherein the coating material as a layer 3 on the dipped body 2 deposits. After removing the toilet block 1 from the plunge pool 10 becomes the layer 3 dried.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited non-patent literature

• - DIN 67530 [0037]
• - DIN 67530 [0045]
• - DIN 53380 [0061]

Claims (23)

Toilet brick, comprising - at least one first water-soluble basic body ( 2 ) having a surfactant content of 2-50 wt .-% and / or a perfume oil content of 1-20 wt .-% and / or a dye content of 0.5-20 wt .-%, and - at least one of the main body ( 2 ) at least partially covering the outer layer ( 3 ), characterized in that the layer ( 3 ) in on the basic body ( 2 ) applied state has a gloss level of at least 8 gloss units, preferably at least 12 gloss units, more preferably at least 25 gloss units measured according to DIN 67530 with a 60 ° geometry. Toilet stone according to one of the preceding claims, characterized in that the outer layer ( 3 ) has a thickness between 10-1,000 μm, preferably 20-500 μm, particularly preferably 50-150 μm. Toilet stone according to one of the preceding claims, characterized in that the outer layer ( 3 ) less than 5 wt .-%, preferably less than 2 wt .-% and particularly preferably less than 1 wt .-% of the base body ( 2 ) is. Toilet stone according to one of the preceding claims, characterized in that the layer ( 3 ) the basic body ( 2 ) completely encloses. Toilet brick according to one of the preceding claims, characterized in that the toilet block is substantially is spherical. Toilet stone according to one of the preceding claims, characterized in that the layer ( 3 ) is water-soluble. Toilet stone according to one of claims 1 to 4, characterized in that the layer ( 3 ) is insoluble in water. Toilet stone according to one of the preceding claims, characterized in that at least one second layer, which is different from the first, on the base body ( 2 ) is applied, wherein the first and the second layer can not cover, partially or completely. Toilet stone according to one of the preceding claims, characterized in that the layer ( 3 ) the basic body ( 2 ) in the areas in which a touch of the toilet block is provided with the user's hand, so that a direct contact between the user's hand and the main body of the toilet block is prevented. Toilet stone according to one of the preceding claims, characterized in that the basic body ( 2 ) contains at least one enzyme in a concentration of 0.1 to 10 wt .-%. Toilet stone according to one of the preceding claims, characterized in that the layer ( 3 ) a roughness R _z of less than 100 microns, preferably less than 75 microns, more preferably less than 50 microns. Toilet stone according to one of the preceding claims, characterized in that the layer ( 3 ) has a friability which is smaller than the friability of the basic body ( 2 ). Toilet stone according to one of the preceding claims, characterized in that the layer ( 3 ) has an attrition that is smaller than the attrition of the body ( 2 ). Toilet stone according to one of the preceding claims, characterized in that the layer ( 3 ) has an oxygen permeability of less than 10 cm3 / m2 · dbar (DIN 53380, 23 ° C, 75% RH). Toilet stone according to one of the preceding claims, characterized in that the layer ( 3 ) is printable by ink jet printing method. Toilet block according to one of the preceding claims, characterized in that the substantially spherical toilet block has a rolling resistance coefficient c _R less than 10, preferably less than 1, particularly preferably 0.1. Toilet brick according to one of the preceding claims, characterized in that the toilet block is a fastener includes, by the toilet block in such at the edge of a toilet bowl it is fixable that he is in the fixed state of rinse water is at least partially overflowed. Toilet basket for the introduction of active ingredients into the rinse water of a toilet bowl - One Holder for fixing the toilet bowl at the edge of the toilet bowl - At least one in the attached state of the toilet bowl of rinse water flow-through chamber for receiving a toilet block - At least a toilet block according to one of the preceding claims Toilet basket according to claim 18, characterized that at least two toilet stones arranged in the toilet bowl are. Toilet basket according to one of claims 18 to 19, characterized in that at least two toilet blocks a mutually different layer ( 3 ) and / or basic body ( 2 ) exhibit. Method for producing a toilet block according to one of claims 1 to 17, characterized in that the layer ( 3 ) on the basic body ( 2 ) is applied by a drum coating. Method for producing a toilet block according to one of claims 1 to 17, characterized in that the layer ( 3 ) on the basic body ( 2 ) is applied by a spraying process. Method for producing a toilet block according to one of claims 1 to 17, characterized in that the layer ( 3 ) on the basic body ( 2 ) is applied by a dipping method.