FI69866C - BEHANDLING AV EN TVAETTMEDELSTAONG - Google Patents

Description

1 69866

Detergent bar handling. - Behandling av en tvättmedelstäng.

The present invention relates to the treatment of soap raw materials to produce a soap bar with reduced granularity.

Soap bars should have a soft feel or touch due to pleasant performance. However, some ingredients in the soap material may result in granularity or roughness during washing. A common feature of most soap processing lines is the use of soap waste from stamped bars in the final bar pressing step. The water content of such soap of origin is lower than that of the soap raw material, which is why the soap is harder. The presence of soap waste can lead to granularity of the rod. Granularity can also form when the greasing agent is added to the soap after the final drying step.

The present invention uses processing conditions to reduce granularity by subjecting the soap feedstock to appreciable processing in an efficient manner.

Certain alloys result in the granularity or roughness of the rod obtained as a final product treated by conventional methods, but these alloys are less granular when treated in accordance with the invention.

The present invention uses a groove transfer mixer class device to treat basic soap. These devices have two closely spaced movable surfaces, each with groove patterns that overlap the surfaces as the surfaces move so that the material moving between the surfaces travels alternately through the grooves on each surface, so that most of the material passes through the friction zone. movement.

The groove transfer mixers are normally made cylindrical in geometry, and in the preferred 2,68966 devices used in this method, the grooves are arranged to form continuously present but variable paths through the device during 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 annular device.

The geometry of the device can also be planar, whereby the opposite flat surfaces have groove patterns and the surfaces move with each other, e.g. by rotating the second plane, so that the material added between the surfaces from the point of rotation moves outwards and passes between the grooves of each surface.

In another cylindrical embodiment, the inner cylinder remains stationary while the outer cylinder rotates. The stator in the middle can be more easily cooled or, if necessary, heated, because the liquid connections can be made in a simple way; the external rotor can also be cooled or heated in a simple manner. It is also mechanically simpler to apply the rotational rotational energy to the outer frame than to the inner cylinder. This structure therefore has advantages in terms of both construction and use.

The material is forced through the mixer using auxiliaries when turning the rotor. Examples of such auxiliaries are screw extruders and piston presses. The auxiliary devices are preferably used separately from the mixer, so that the passage of the substance and the work performed on it can be changed separately. Separate use can be achieved by arranging the auxiliaries to deliver 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 center line. The direct feed arrangement is easier to achieve when the outside of the device is a rotor. The separate use of the device and auxiliary devices helps to monitor and control the processing.

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

One or both surfaces are preferably thermally controlled. In the method, efficient heating / cooling of the material can be performed. The temperature of the material during treatment is preferably below 40 ° C. The treatment temperature is usually about 30-55 ° C.

The soap raw material may contain detergents other than soap in such amounts that they do not interfere with the desired effect. Examples of such active ingredients are alkanesulfonates, alcohol sulfonates, alkylbenzenesulfonates, alkyl sulfates, acyl ethylthionates, olefin sulfonates 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 products in other shapes, such as extruded products (Noodles) and. small balls.

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

Figure 1 is a longitudinal section of a cylindrical u-shear 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 a mixer with grooves on opposite surfaces of the device; 4,69866

Figure 8 is a longitudinal section of a groove transfer mixer in which the rotor is formed by an external cylinder.

Embodiments of the device will now be explained.

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

The groove patterns in the stator 3 and the rotor 4 are shown in Fig. 3. The groove 3 of the stator is shown in diagonal lines. Figure 2 also shows the overlap of the groove systems 3, 4. The liquid jacket 1A is arranged to perform temperature control by controlling the heating or cooling water. A temperature control channel 2A is formed in the rotor.

The material passing through the device passes through the grooves in turn on the opposite surfaces of the stator and rotor. The grooves immediately behind these and shown in section are marked in Figure 1 as dashed line profiles to show a repeating pattern or structure.

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

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All or most of the material flow is subjected to appreciable treatment 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 point one of its velocity components changes.

The agitator has a rotor radius of 2.54 cm and 36 hemispherical grooves (radius 0.9 cm) arranged in six rows of six grooves. There were seven rows of six grooves on the inner surface of the stator to provide overlap of the grooves at the inlet and outlet ends. The material to be treated was injected into the device through a channel 5, which channel communicates with the annular space between the rotor and the stator during operation, and the injection took place with a screw extruder. The material left the device through the nozzle 6.

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

Fig. 5 shows a groove arrangement in which the dimensions and profiles of the grooves are the same as in Figs. 1, 2 and 3. The grooves according to Fig. 5 are arranged in a square shape so that each groove is a small distance from adjacent grooves on the same surface. This structure does not form as strong an overlap as the arrangement of Figure 3. In the latter, each groove is close to its neighbor and there are six grooves on the same surface, i.e. a hexagonal pattern is formed.

Figure 6 shows in section a groove transfer mixer, the rotor 7 of which is rotatably arranged inside a hollow stator 8, the stator having a free or effective length of 10.7 cm and a diameter of 2.54 cm. The rotor had five grooves 9 (diameter 5 mm) with a semicircular cross-section arranged at regular intervals on the circumference and extending parallel to the longitudinal axis along the entire length of the 6 69866 rotor. The cylindrical inner surface of the stator 8 had 8 grooves 10 of similar dimensions extending along its length 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.

Figure 7 shows a series of grooves in which the larger dimension of the rotor and stator grooves shown in oblique lines was perpendicular to the material flow; the latter direction is indicated by an arrow. The grooves are therefore elongated. In this embodiment, a smaller pressure drop is obtained along the entire length compared to devices of similar geometry, the grooves of which are not located so that the longer dimension is normal, i.e. perpendicular to the material flow. To reduce the pressure drop, at least one surface must have elongate grooves whose longer dimension is perpendicular to the material flow.

In the groove transfer mixer shown in Fig. 8, the outer cylinder 11 was mounted to rotate about a central axis 12. A temperature control jacket 13 and duct were provided, but the latter is not shown because the grooves of the central shaft are shown in plan view and the rotor in section. The central stator (diameter 52 mm) had three rows of three grooves 14, with partial grooves, i.e. half grooves, at the inlet and outlet points. The rotor had four rows of three grooves 15. The stator and rotor grooves were elongated and had a total arc dimension of 5.1 cm perpendicular to the material flow, and hemispherical cutting heads with a radius of 1.2 cm were connected by a semicircular plate of the same radius. The grooves were arranged in the arrangement according to Figure 7, i.e. their long dimension was perpendicular to the material flow. The rotor was driven by an external gear 16 and a chain drive attached to it.

Example The groove transfer mixer shown in Figure 1 was used.

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The rotor radius of the mixer was 2.54 cm and 36 hemispherical grooves (radius 0.9 cm) were 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.

The tallow / coconut mixture (80/20) was vacuum dried to 12% moisture. The portion was air dried at 70 ° C to a moisture content of 5%. A mixture of two parts of 12% moisture material and one part of 5% moisture material was prepared and dispensed. One side was treated in a groove transfer device with the aid of a soap bar press and the other side was treated by conventional grinding. The groove transfer mixer was operated at -150 rpm and the throughput was 156 g per minute and water cooling was applied to the stator and rotor.

Tablets were struck from each of the processed raw materials and used to wash hands arbitrarily. Conventionally treated tablets felt coarse and granular while tablets treated according to the invention were not considered as coarse by the users.

Claims (6)

A method for reducing granularity in a soap-containing detergent material, characterized in that the material is treated by guiding it between two adjacent, moving surfaces, each surface having a series of grooves which overlap during the movement of the surfaces so that the material passing between the surfaces follows the turn a path passing through grooves in each surface, whereby most of the material passes through a massage zone in the material, the zone of which is formed by the movement of the surfaces. 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 thermal regulation or control is used on at least one surface. Method according to one of the preceding claims, characterized in that the grooves on at least one surface are elongate and 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-coated mixture during the treatment is in the range from about 30 to 55 ° C. Process according to Claim 5, characterized in that the temperature is below about 40 ° C.