FI69867B - BEHANDLING AV EN TVAETTMEDELSTAONG - Google Patents

Description

'69867

Detergent bar handling. - Behandling av en tvättmedelst & ng.

The present invention relates to the treatment of soap raw materials for the addition of volatile components, e.g. perfumes.

When handling soap raw materials, it is a common requirement to add fragrance to impart odor to the product. For some products, it may also be desirable to add some other volatile material during processing, e.g., solvent. The efficiency of the addition depends on several factors, such as the processing temperatures and times and the connection to the ambient air.

It has been found that a groove transfer mixer is an effective way to perform the addition, as processing temperatures generally remain below those prevailing in soap processing. The processing time is short and mixing takes place in a closed state. The energy requirement is normally lower than in conventional methods.

The present invention uses an apparatus belonging to the category of groove transfer mixer to add a volatile component to its base soap. These devices have two closely spaced moving surfaces, each with a groove pattern and the grooves overlapping during the movement of the surfaces so that the material passing between the surfaces follows the path through the grooves alternately on each surface so that most of the material passes through the friction zone. movement of surfaces.

The groove transfer mixers are normally made to be spindle-shaped in geometry, and in preferred devices for carrying out this method, the grooves are arranged to form continuously present but variable paths through the device during the mutual movement of the two surfaces. Cylindrical devices with a geometry have a stator with a rotor mounted inside; the opposite surfaces of the stator and rotor have grooves through which the material passes as it passes through the device. The treatment temperature of 2 69867 is preferably from about 30 to about 55 ° C, more preferably below about 40 ° C.

The geometry of the device can also be planar, with opposite flat surfaces having a series of grooves and the surfaces moving relative to each other, for example by rotating the second surface so that the material added between the surfaces of rotation moves outwards and moves alternately between grooves on each surface.

In another cylindrical embodiment, the inner cylinder remains fixed while the outer cylinder rotates. The central stator is easier to cool or, if necessary, heat, because the liquid connections can be made in a simpler way; the outer rotor can also be cooled or heated simply. It is also mechanically simpler to apply rotational energy to the outer body than to the inner cylinder. This structure has advantages in terms of both construction and use.

The material is forced through the mixer using auxiliaries when rotating the rotor. Examples of auxiliary devices are screw extruders and piston springs. The auxiliary devices are preferably used separately from the mixer so that the total throughput and the work performed on it can be varied separately. Separate use or operation can be achieved by providing auxiliary devices for delivering the material to be treated at an angle to the center line of the friction device. This arrangement allows the energy of rotation to be supplied to the device, creating a friction around its centerline. The direct feed arrangement is easier to achieve when the outer part of the device is a rotor. The separate use of the device and auxiliary devices helps to monitor and control the processing.

In general, several different groove shapes can be used, e.g. Metal Box (UK 930 339) shows longitudinal grooves on two surfaces. The stator and rotor may have, for example, 6-12 grooves arranged at suitable intervals on the circumference of the parts and extending over the entire length of the parts.

3 69867

One or both surfaces are preferably subjected to thermal control or monitoring. The method enables efficient heating / cooling of the materials.

Detergent pulp or raw material may contain detergents other than. soap in such amounts that they do not interfere with the desired effect. Examples of these active ingredients are alkanesulfonates, alcohol sulphates, alkylbenzenesulphonates, alkyl sulphates, acyl isethionates, olefin sulphonates and ethoxylated alcohols.

The treated raw material was made into a bar shape using conventional stamping machines. The raw materials can also be used to make other shapes, such as extruded products (Noodles) and beaded or spherical products.

The invention will now be explained with reference to the accompanying schematic drawings, in which:

Figure 1 is a longitudinal section of a cylindrical groove transfer mixer;

Figure 2 is a cross-sectional view taken along line 2-2 of Figure 1;

Figure 3 shows a groove pattern in the device of Figure 1;

Figures 4, 5 and 7 show other groove patterns;

Figure 6 is a cross-section of the mixer with grooves on opposite surfaces of the device;

Figure 8 is a longitudinal section of a groove transfer mixer in which the outer cylinder forms a rotor.

Embodiments of the devices will now be explained.

4,69867

Figure 1 shows the groove transfer mixer in longitudinal section. This includes a hollow cylindrical stator part 1, a cylindrical rotor part 2 mounted for rotation inside the stator with thrust, the opposite cylindrical surfaces of the rotor and stator having a plurality of corresponding and parallel circumferential groove rows of stator rows arranged as follows: a) circumferentially staggered; (b) the grooves of adjacent rows on the rotor are stepped on the circumference; and c) the rows of grooves on the stator and rotor are axially staggered.

The groove pattern of the stator 3 and the rotor 4 is shown in Figure 3. The grooves of the stator are shown in slashes. Figure 2 also shows the overlap between the patterns formed by the grooves 3, 4. A liquid jacket 1A is provided for performing temperature control by controlling heating or cooling water. A temperature control or control channel 2A is formed in the rotor.

The material passing through the device moves alternately through the grooves in the opposite surfaces of the stator and rotor. The grooves immediately behind the cross-sectional grooves are shown in broken line profiles in Figure 1 to show a repetitive structure or arrangement.

The material flow is distributed between pairs of adjacent grooves in the same rotor or stator surface due to the overlapping or overlapping position of the groove in the opposite stator or rotor surface.

All or most of the material flow is treated vigorously or appreciably as it passes through the friction zone formed by the mutual movement of the stator and rotor surfaces. The material adheres to each groove for a short time during passage, at which time one of its velocity components changes.

The rotor radius of the mixer was 25.4 cm and 36 hemispherical grooves (radius 0.9 cm) were arranged in six rows of new grooves. The inner surface of the stator had seven rows of six grooves to form an overlap of grooves at the inlet and outlet ends. The material to be treated was injected into the device via a channel 5 by means of a screw-extruder during use, said channel being in communication with the annular space between the rotor and the stator. The material left the device through the nozzle 6.

Figure 4 shows elongate grooves arranged in a square shape; the sectional profile of these grooves is shown in Figure 2. These grooves are aligned so that their longitudinal axis is parallel to the longitudinal axis of the device and to the direction of movement of the material through the device; the latter is indicated by an arrow.

Figure 5 shows a series of grooves, the dimensions and profiles of which are shown in Figures 1, 2 and 3. The grooves of Figure 5 are arranged in a square shape so that each groove is a short distance from adjacent flow grooves on the same surface. This structure does not form as strong an overlap or overlap as the structure shown in Figure 3. In the latter, each groove is arranged close to the six grooves on the same surface, i.e. a hexagonal shape is formed.

Figure 6 is a sectional view of a groove transfer mixer having a rotor 7 rotatably disposed within a hollow stator 8 having a stator free or effective length of 10.7 cm and a diameter of 2.54 cm. The rotor had five grooves 9 (5 mm in diameter) with a semi-circular cross-section, evenly spaced on the circumference and extending parallel to the longitudinal axis along the entire length of the rotor. The cylindrical inner surface of the stator 8 had eight grooves 10 of similar dimensions extending along the length of the stator and parallel to the longitudinal axis. In this embodiment, grooves were used that extended the entire length of the stator and rotor without interruption. A temperature control jacket and duct were provided.

6 69867

Fig. 7 shows a series of grooves in which the grooves of the rotor, as well as the grooves of the stator, are located in oblique lines so that their longer dimension is perpendicular to the material flow; the latter is indicated by an arrow. The grooves are thus longitudinal. This embodiment provides a smaller pressure drop along the length of the device compared to devices with similar geometry, but where the grooves are not perpendicular to the longer dimension, i.e. normal to the material flow. In order to reduce the reduction of the substance, at least one surface must have longitudinal grooves whose longer dimension is perpendicular to the material flow.

In the groove transfer mixer of Fig. 8, the outer cylinder 11 was mounted to rotate about a central axis 12. The temperature control jacket 13 and the duct were provided, but the latter is now shown because the grooves in the central shaft are shown in plan view and in rotor section. The central stator (diameter 52 mm) had three rows of three grooves 14 and the entry and exit points had partial grooves, i.e. half grooves. The rotor had four rows of three grooves 15. The grooves in the stator and rotor were elongated and their total arc dimension was 5.1 cm perpendicular to the material flow and the 1.2 cm radial sectioned hemispherical ends were connected by a same radius sectioned semicircular plate. The grooves were arranged in the shape shown in Figure 7, i.e. their long dimension perpendicular to the material flow. The rotor was driven by an external gear 16 and a chain drive attached to it.

The following are examples of the method according to the invention.

Example I

The mixer used the groove shape of Figure 3 and had a root diameter of 2.54 cm and 36 hemispherical grooves (radius 0.9 cm) arranged in six rows of six grooves. The inner surface of the stator had seven rows of six grooves to provide overlap or overlap of the grooves at the inlet and outlet ends.

An overfatted tallow / coconut feedstock (60/40 / 7i) was prepared - To this stock was added 2-phenylethanol (1.0%) in a strip mixer to coat the noodles or strips with this volatile material. The base material was divided and the first half was processed in a groove transfer extruder using a soap bar press and the second half was processed conventionally. The tablets were beaten and examined by gas chromatography under pressure. The results showed that less volatile component was lost using the groove transfer mixer method.

Example II

Tallow / coconut soap (80/20) with a glycerol content of 1.25% was used as the base material. Limonene (1.5% of base) was added to the soap sample in flake form and treated as usual.

The same sample was mixed with the same amount of limonene and the sample was passed through the apparatus of Figure 1 with grooves 2.4 cm in diameter, the grooves being arranged so that the six grooves formed a circle on the circumference. The stator had four complete grooves and the rotor had three complete grooves and two half grooves at each end. The temperature of the soap is 25 ° C at entry and 35 ° C at exit and cooling was applied to the stator and rotor. The throughput rate was 400 g / min from the soap bar press and the rotor speed was 35 rpm.

Gas chromatographic analysis by gas chromatography showed that conventionally treated soap retained 60% of the original perfume and soap mixed in accordance with the invention retained 75%.

Claims (6)

A method for adding a volatile material to a soap-containing detergent material, characterized in that the soap-containing material and the volatile material are mixed by guiding the materials as a mixture between two closely spaced surfaces, each surface having a series of grooves which overlap during movement of the surfaces, the material moving between the surfaces passes in turn through the grooves on each surface, with most of the material passing through the friction zone formed by the movement of the surfaces into the material. A method according to claim 1, characterized in that said two surfaces are cylindrical in geometry. Method according to Claim 1 or 2, characterized in that a thermal regulation or control is provided on at least one surface. Method according to one of the preceding claims, characterized in that the grooves of at least one surface are longitudinal so that their long dimension is perpendicular to the material flow. Process according to one of the preceding claims, characterized in that the temperature of the soap-containing mixture during the treatment is in the range from about 30 to about 55 ° C. Method according to one of the preceding claims, characterized in that the volatile material is a perfume.