JPH0472400A - Production of soap - Google Patents

Abstract

PURPOSE:To surely carry out grinding of fine powder and kneading in a short time, by successively feeding a soap composition into a barrel, passing through the composition between engaging gears and transferring the composition through a gap between the gears and the barrel. CONSTITUTION:A soap composition is fed to an engaging part of sending helical gears 5, 6, 7, 9, 10 and 12 attached to two screws 3 and 4 and a teeth groove of part just before engaging, pushed out from the position by teeth of the opposite gear engaged and transferred along the teeth groove to the side of return helicals 8, 11 and 13. When fine granules are moved forward along the axial screw direction while being ground between the teeth and sent to the boundary of both the gears, the soap composition in the teeth groove is mutually blended and transported from a slight gap between each gear and the inner face of the barrel 1 to other teeth groove. The soap composition remaining in the teeth groove is strongly compressed between the teeth, ground, kneaded as a whole, passed through the return helical gears and advanced.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a method for kneading a soap composition and/or grinding the fine particles contained therein.

[Conventional technology]

Conventionally, a known method for producing bar soap is to dry nidosorb and then extrude it into pellets using a brogue, mix pigments and fragrances into this dried dough, knead the mixture, and then extrude it. ing. However, in soaps molded in this way, small hard particles appear on the surface of the soap, which sometimes gives a rough feel to the hands. This is because the fine particles contained in the soap composition are not sufficiently ground during molding. Therefore, as a method to deal with this problem, immediately after drying the neat soap, knead it with a kneading device having three or more rolls, or knead it with a convex lens cross section as disclosed in JP-A-1-190800. This method uses a kneading device that combines paddles with two parallel axes with a phase difference of 90 degrees, and the fine particles contained therein are ground between the rollers or between the paddles. can be mentioned. However, even when kneading is carried out using these methods, the contact area between the rollers or paddles is small, so few fine particles are ground between them, and the fine particles that slip between the rollers or paddles and the barrel that houses them are small. In reality, the soap composition discharged from these kneading devices still contains many fine particles, and the problem has not been sufficiently solved. On the other hand, another method for kneading and simultaneously grinding the fine particles contained in the soap composition is a method using a so-called gear compounder. This gear compounder is a kneading device in which two parallel shafts are stacked in several stages in the vertical direction, and each of these two parallel shafts is equipped with a double helical gear that meshes with each other. When this gear compounder has a length of 4 m, the soap composition to be mixed flows from top to bottom between each gear, thereby grinding the fine particles between the teeth that mesh with each other, and at the same time Kneading can be performed by rotation.

[Problem to be solved by the invention]

However, with this method, it is possible to knead the soap composition and grind the fine particles contained therein at the same time, but since the soap composition has a high viscosity, it adheres to the tooth surface and causes damage to the soap composition. As a result, there was a problem in that there was almost no flow downward from the gear. Therefore, the amount of soap composition that can be processed per unit time is extremely small, and it has been virtually impossible to knead and/or grind the soap composition. Therefore, the technical problem to be solved by the present invention is to knead a soap composition and grind the fine particles contained therein.
The purpose is to provide a method that can be carried out efficiently in a short time.

[Tanu's means of solving problems]

According to the present invention, a feed helical gear that generates a forward propulsive force by meshing with two mutually parallel and horizontal axes, and a return helical gear that generates a reverse force, each having a tooth space. When installed so that they communicate, these two axes
A device is used in which each gear is rotatably held within the grinding/kneading chamber by a barrel having a grinding/kneading chamber formed approximately closely along the outer peripheral surfaces of the feed helical gear and the return helical gear. A method of kneading a soap composition and/or grinding fine particles contained in the soap composition, the soap composition being supplied into a barrel, and the soap composition in each tooth groove interlocking with each other. Provided is a method for producing soap, characterized in that the fine particles are ground and/or the soap composition is kneaded as a whole by passing between the teeth and moving through the gap between the teeth and the barrel. be done. In addition, the soap composition to be treated by the method according to the present invention includes, for example, vegetable oils and fats having an alkyl group or alkenyl group having 8 to 24 carbon atoms, animal oils and fats, mixtures thereof, or oils and fats obtained from these oils and fats. Examples include fatty acid alkali metal soaps obtained by the reaction of esters or fatty acids with alkali agents (alkali metal hydroxides) alone or in combination of two or more types. Vegetable oils include palm kernel, palm stearin, yam oil, olive oil, cassava oil, sesame oil, cottonseed oil, soybean oil, tung oil,
As animal fats and oils, such as peanut oil and rapeseed oil, beef tallow, pork fat, whale fat, etc. are used. In addition, additives such as chelating agents, humectants, antioxidants, pigments, fragrances, bactericidal agents, and superfatting agents may be added as necessary. After the neutralization or saponification reaction, the water content is preferably adjusted to about 5 to 30% by weight by drying if necessary, and more preferably adjusted to 11 to 16% by weight.

[Operation/Effect] In this configuration, the soap composition is supplied into the tooth grooves of the meshing portion and the portion immediately before meshing of the feed helical gear mounted on the two shafts, and when the meshing between the two shafts of the feed helical gear progresses, It is pushed out of that position by the teeth of the mating gear, and most of it returns along the tooth groove and moves toward the helical gear. Then, as the meshing progresses further, the soap composition remaining in the tooth grooves moves forward along the axial direction while the fine particles are ground between the meshing teeth. In this way, when the soap composition is sent to the vicinity of the boundary between the feed helical gear and the return helical gear, the soap composition in the tooth grooves of the feed helical gear tends to proceed toward the return helical gear, but the soap composition is transferred to the return helical gear. As the soap composition in the tooth grooves tries to return to the feed helical gear side, much of the soap composition in each tooth groove mixes with each other and flows into the other through the small gap between each gear and the inner surface of the barrel. It runs away towards the tooth groove. Further, as the meshing progresses further, the soap composition remaining in the tooth grooves is strongly compressed between the meshing teeth, and the fine particles contained therein are ground up by the meshing teeth. In this configuration, if the propulsive force by the feed helical gear is made stronger than the reverse force by the return helical gear, the soap composition moves forward as a whole, even though it partially moves backward. In this manner, the soap composition advances forward through the return helical gear while the fine particles contained therein are ground and the soap composition is kneaded as a whole. In addition, the soap composition is supplied in an amount sufficient to fill the meshing part of the tooth groove of the feed helical gear and the part immediately before the mesh, and is sequentially pushed forward by the meshing of the feed helical gear, so that it is located in the tooth groove in front of the tooth groove. The soap composition is also pushed from behind and sequentially moves forward. Unlike the conventional method, a sufficient amount of treatment can be obtained in a short time because there is no problem that the soap composition adheres to the teeth and does not progress. [Example] Below, a soap manufacturing method according to an example of the present invention will be explained in detail using FIGS. 1 to 7. First, the apparatus used to implement this method will be explained using FIGS. 1 to 3. FIG. 1 is a partially sectional plan view of this device, FIG. 2 is a sectional view taken along the line 1--2 in FIG. 1, and FIG. 3 is an enlarged sectional view taken along the line 2--2 in FIG. As shown in the figure, this device is roughly divided into a barrel 1 having a grinding/kneading chamber 2 extending in a substantially horizontal direction; Shafts 3, 4, and helical gears 5~ attached to these two shafts 3.4 so as to mesh with each other.
13, and a driving means 14 for rotating these helical gears 5 to 13 and performing the grinding and kneading treatment of the soap composition therebetween. The barrel l has openings at both ends and a flange 1.
The barrel body 15 is formed with flanges 15a and 15b, and the bearing plate 16, 17 is bolted to the flanges 15a and 15b. The bearing is plate 16
．． Each of the shafts 17 has a built-in bearing 18 and 19, and the two shafts 3 and 4 on which the helical gears 5 to 13 are mounted are rotatably held by the bearings 18 and 19, respectively. As shown in FIG. 3, the barrel l is formed so that its inner surface substantially follows the outer peripheral shape of the helical gears 5 to I3. Also, the bearing is plate 16.
A tongue member 20, 21 is attached to the inner surface of 17 to prevent leakage of the soap composition. At the left end of this barrel 1 is a mashing/kneading chamber 2.
A soap composition supply port 22 communicating with the grating/kneading chamber 2 is formed at the right end, and a soap composition discharge port 23 communicating with the grinding/kneading chamber 2 is also formed at the right end. Further, a soap composition supply means 39 is attached to the supply port 22 for supplying a predetermined amount of soap composition into the mashing/kneading chamber 2 . Further, the discharge port 23 is composed of a discharge pipe 24, a guide plate 25, and an aperture plate 26 movably mounted therebetween so that the size of the opening of the discharge port can be changed. Additionally, a water supply pipe 36 is provided around the barrel 1.
A water jacket 35 having a drain pipe 37 is formed, and cold water or hot water is supplied depending on the type of soap composition to be kneaded. The left end of the shaft 3 is connected to a motor 38 by a coupling 27. Further, in order to transmit the rotation to the shaft 4, drive gears 28a, 28b, and 29a, 29b are attached to each shaft 3.4, and these motors 3.
B, the coupling 27, and the drive gears 28 and 29 constitute the drive means 14. Note that the drive gear does not necessarily need to be provided. As shown in FIG. 2, the shaft 4 includes a stepped shaft body 30, a collar 31, and an end plate 32.
It is composed of. Then, by sequentially inserting the helical gears 5b to 13b from the right side into the shaft body 30 on which the key 34 is attached, and tightening the collar 31 with the end plate 32 and the bolt 33, the helical gear 5b is inserted into the shaft 4. ~13b is fixed. Although the cross section of the shaft 3 is not shown, helical gears 5a to 13a are fixed in the same configuration as the shaft 4. The helical gears 5 to 13 have twist directions set as shown in the figure. i.e. gears 5, 6, 7, 9, 1
For 0°12, the gear Ill and +1.13 are used to feed the soap composition so that the teeth spread from the supply port side to the discharge port side when viewed from above. As a return gear, the twist direction is set so that it spreads conversely from the discharge port side to the supply port side. The above twisting direction is described for the case where the engaging portion rotates downward in FIG. 1, but in this device, the twisting direction is completely opposite to that described above, and the engaging portion can also be rotated upward. It is possible. A method for manufacturing soap using the apparatus configured as above will be described with reference to FIGS. 4 and 5. The soap composition supplied onto the helical gear from the supply port 22 enters the groove between the teeth at the upper part of the meshing part, as shown in stippling in the figure. Since the tooth grooves of the feed helical gear 6a communicate with the tooth grooves of the feed helical gear 7a, as the gear meshing progresses, the soap composition in the tooth groove a is transferred to the tooth groove a.
Most of the teeth are pushed out of that position by the teeth of the mating gear 6b that mesh with the mating gear 6b, and most of them move in the direction of the arrows along the tooth groove a, and the teeth of the mating gear 6b as shown by the arrow 1. There are two types: one that climbs over and moves to the tooth groove of the gear 6b on the other side. Also, at this time, a small portion of the remaining soap composition slips between the teeth and the barrel as shown by the arrow j and moves to the adjacent tooth groove C, and when the meshing progresses further, it is transferred to the other gear 6b. The tooth repeats the same action as the soap composition in the tooth groove a. Next, at the boundary between the feed helical gear 7a and the return helical gear 8a shown in FIG.
The soap composition moves in the directions indicated by the arrow ij, but because the tooth groove e of the return gear 8a meshes with the teeth of the gear 8b, the soap composition moving in the direction indicated by the arrow moves within the tooth groove e in the direction indicated by the arrow. Mix with the soap composition. As the meshing progresses further, the tooth grooves d and e will change to the gears 7b and 8 just shown.
Similar to the tooth groove r1g in b, both sides mesh with the opposing teeth, and the soap composition therein is forcibly compressed. This state is indicated by A in FIG. The soap composition strongly compressed within this tooth groove A escapes little by little from the gap between the teeth (backlash) as shown by the arrow, but the meshing of both gears continues as it passes through the gap. The granules contained therein are ground down by the interlocking teeth. Further, the soap composition that has passed through the pack rune passes through the tooth bottom B and moves in the axial direction as shown by arrows Q and m. As the soap composition moves between the tooth grooves in the manner described above, the fine particles contained therein are ground and simultaneously kneaded and moved in the axial direction. Since the soap composition that has been ground and kneaded moves in the h direction between the gears 5a, 5b and 6a, 6b, the soap composition as a whole moves from the supply port side to the discharge port. I'm going to go. In addition, since the soap composition is pushed from behind and advances in the axial direction, the amount of soap that can be processed is not limited by adhesion to the teeth, and the tooth grooves in the meshing area between each gear and the area immediately before the meshing. By sequentially supplying a sufficient amount to constantly fill the soap composition, it is possible to completely grind the fine particles contained in the soap composition and process a considerably large amount of soap composition in a short time compared to the conventional method. . In addition, if there are no fine particles in the soap composition, or if it is not necessary to completely grind the fine particles contained in the soap composition, a large amount of the soap composition is supplied by the supply means 39, and the soap composition is fed into the barrel. It is also possible to fill the inside with a soap composition and perform operation mainly for kneading. According to this method, a high kneading effect can be obtained even if the throughput is increased. Next, a modification of the apparatus for carrying out this method will be described with reference to FIG. 6, which is a partially sectional plan view thereof. As shown, in this device the two shafts 53,54 are mounted on both sides of the barrel 51, which has a longer mashing and kneading chamber 52 than in the previously described device, by bearings mounted on both sides of the barrel 51. It is held almost horizontally so that it penetrates inside. A motor 68 and a coupling 6 are connected to one end of this shaft 53 to drive each shaft 53 and 54.
9. A drive means 67 consisting of drive gears 70, 71 is constructed, and a torsion angle is set at a position inside the barrel closer to the drive means 67 on each shaft 53, 54, similar to the device described above. Feed helical gear 55°56.57
59, 60.62 and return helical gear 58.61 6
3 are installed so that the two shafts mesh with each other. Further, the barrel 51 has an inner surface of its main body 64 that is formed so as to substantially follow the outer circumferential shape of the helical gears 55 to 63, and has a soap composition supply port and discharge port (not shown) around the barrel 51. and water jacket 83
The structure is similar to that of the device described in FIGS. 1 to 3 in that it is formed. On the other hand, first screws 73a and 73b are connected to the shafts 53 and 54 on the right side of the helical gear 63, respectively.
Helical gears 74 to 77, whose twist directions are alternately set in opposite directions, are mounted to rotate integrally with 3.54, and furthermore, on the right side, helical gears 74 to 77, whose twist directions are alternately set in opposite directions, are engaged with each other between the two shafts as kneading gears. It is equipped to do so. On the right side thereof, screws 78a and 78b are set in the opposite twisting direction to the first screws 73a and 73b.
is attached via a collar 79. Helical gears 55 to 63, 74 to 77, and screw 7 explained above
3.78 is fixed to each shaft 53, 54 by tightening the collar 80 with the end plate 82 and bolt 81. When using the apparatus configured as described above, the soap composition supplied from the supply port is kneaded while the fine particles contained therein are ground and passed through the helical gear 63 toward the discharge port. The soap composition that has passed through the gear 63 is given a strong propulsion force toward the discharge port by the screw 73, and is squeezed by the same aperture plate provided in the device described above at the discharge port, so that the soap composition passes through the screw 73a. ,
Although the barrel is not filled with soap composition on the supply port side of 73b, this screw 73a. The area closer to the outlet than 73b is filled with soap composition. Therefore, a certain pressure is generated in this part, but the twisting direction of the second screws 78a and 78b is different from that of the first screw 7.
3a and 73b are set opposite to the twisting direction, so that excessive pressure is not applied to the sealing member housed therein. In this manner, the portion of the barrel 5I closer to the outlet than the screw 73a73b is filled with the soap composition, so that kneading is performed more thoroughly in this portion than in grinding of fine particles. It is possible to perform grinding and kneading at the same time with just the gears 55 to 63, but if more sufficient mixing is required, adding the screw 73 and gears 74 to 77 is extremely effective. It is true. Alternatively, a stopper 84 may be provided at a position immediately on the discharge port side of the gear 77, the side surface of which is shown in FIG. good. In this case, since the shaft 53.54 passes through the inside thereof, although not shown, the shaft 53.5
A sea wing member is attached around 4. By providing this stopper 84, the soap composition only comes out to the outlet side through the six 84a, so that it is possible to obtain only the soap composition in which the fine particles are reliably ground after passing through the meshing part. Also, in this modification, as in the first example, a large amount of soap composition is supplied from the supply means, the barrel is filled with the soap composition, and the operation is performed with the main purpose of kneading. can. Furthermore, the stopper 84 described in this modification can also be provided immediately on the discharge side of the gear in the first described example to enhance the grinding effect. Next, the soap compositions shown in Table 1 were kneaded using three types of devices: each of the above-mentioned mixing devices and a conventional mixing device consisting of three rolls. In addition, the gear rotation speed and throughput of this kneading device are 2QO
Perform processing by setting rpm and 25 kg/hr, 3
With this roll, the throughput is less than that of this kneading device.
The roll rotation speed was set at 27.49.87 rpm and the treatment was carried out three times. In addition, for kneading using this mixing device, the module, helix angle, outer diameter and width are
Gears set at 6.15°, 106 mm and 35 m+n were used, respectively. After the above mixing, it is extruded using a two-stage vacuum prodder with two screws, one with a diameter of 80 mm and a length of 400 mm and the other with a diameter of 110 nm and a length of 440 mm, and a soap of 72 mm in length, 52 mm in width, and 35 mm in thickness is made using a molding machine. Molded. Next, these three types of soaps were tested for their feel when washed by hand, cracking, and rapid lathering properties. Table = 1 Composition (% by weight) Beef tallow fatty acid +) + 7 um soap and coconut oil fatty acid sodium soap mixed in a ratio of 6:4. ) Water... 81... 05 0.2 ・ 111 (Hand washing test) Using each sample, hand wash with tap water at 25 ± 1°C, and the foaming, uneven dissolution, roughness, etc. at that time were set as standards in advance. The feeling was compared to the feeling when washing hands with soap. The results were then ranked into the following three levels. Rank 1: Overall feel is good Rank 2: - Overall feel or fair Rank 3: Overall feel is poor (crack test) A nail approximately 5 cm long is inserted into the edge of the sample. Diameter approx. 0
．． After hanging it with a 3m1m wire and immersing it in water at 25°C for 3 hours, it was taken out of the water and left hanging at room temperature for 24 hours. Thereafter, the state of cracking in each sample was visually observed, and the degree of cracking was determined according to the following criteria. Rank 1: No cracks or slight cracks. Rank 2: There are cracks. Rank 3: There are cracks throughout. (Fast foaming test) It has a holder for fixing the position of the soap, and a sponge that moves up and down while facing parallel to the surface of each soap sample fixed to this holder. Using a test device configured to be immersed in water contained in a container when at the lower end of the sponge's motion, the speed of its up-and-down motion was set so that the sponge made 22 strokes per minute. Then, measure the number of strokes when the water surface in the container is covered with foam as a value of rapid foaming property. Table 2 shows the kneading and grinding conditions of the soap composition in Table 1 and the quality evaluation results of the soap molded using a putter and a molding machine.
Shown in (a), (b), and (c). (Leaving space below) Table 2 (a) Table 2 (c) Table 2 (b) As is clear from these tables, this kneading device has a higher throughput per unit time than the three rolls. Despite being kneaded, the soap molded afterwards has a better feel, fewer cracks, and foams better than soap molded with three rolls. That is, according to the present invention, it is possible to knead the soap composition required to obtain a soap of a quality equal to or higher than that of the conventional method in a shorter time than the conventional method.

[Brief explanation of drawings]

FIG. 1 is a partial cross-sectional plan view of an apparatus used for implementing the soap manufacturing method according to the present invention, FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1, and FIG. [[Line sectional view, Figures 4 and 5 are explanatory diagrams showing the grinding and crosstalk state, Figure 6
The figure is a partially sectional plan view showing a modification of this device, and FIG. 7 is a side view of a stopper used in this device. l... Barrel, 2... Grinding/kneading chamber, 3.4
...Shaft, 5,6,7,9.10.12...Feed helical gear, 8.11.13...Return helical gear, 1
4... Drive means, 15... Barrel body, 15a, 15
b...Flange, 16.17...Bearing is plate,
18.19... Bearing, 20.21... Seal member, 22... Supply port, 23... Discharge port, 24...
Discharge pipe, 25...Guide plate, 26...Aperture plate, 27...Coupling, 28.29...Drive gear, 30...Shaft body, 31...Collar, 32...
... End plate, 33... Bolt, 34... Key, 35... Water jacket, 36... Water supply pipe, 37... Drain pipe, 38... Motor, 39... Soap composition Supply means, 51... Barrel, 52... Grinding/mixing room, 53.54... Shaft, 55.56.5
7,59.60.62...Feed helical gear, 58 6
1.63... Return helical gear, 64... Barrel body, 65.66... Bearing is plate, 67... Drive means, 68... Motor, 69... Coupling, 70.7
1... Drive gear, 72... Shaft body, 73 - First screw 74.75, 76.77... Kneading gear, 78
...Second screw, 7980--Collar, 8 bolts, 82...End plate, 83.Water jacket, 84...Stopper patent Applicant: Kao Corporation Agent, Patent attorney, above (and 1 others) Figure 3 + 3b Figure 7 Figure 4 Figure 5

Claims (1)

[Claims] (1), the two axes are parallel to each other and horizontal, respectively.
A feed helical gear that meshes between the shafts to generate a forward propulsion force and a return helical gear that generates a reverse force are installed so that their respective tooth spaces communicate with each other, and the two shafts are connected to the feed helical gear and the return helical gear. A soap composition is prepared by using a device in which a barrel having a grinding/kneading chamber formed approximately closely along the outer circumferential shape of the apparatus is rotatably housed with each gear located within the grinding/kneading chamber. The soap composition is continuously fed into the barrel by kneading the soap composition and/or grinding the fine particles contained in the soap composition, and the soap composition in each tooth groove is transferred between the meshing teeth. A method for producing soap, characterized in that the fine particles are ground and/or the entire soap composition is kneaded by moving the soap composition through gaps between the teeth and the barrel.